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37 results about "Environmental capacity" patented technology

Environmental capacity is defined by GESAMP (1986) as “a property of the environment and its ability to accommodate a particular activity or rate of an activity…without unacceptable impact”.

Method for setting city initial rainwater interception standard

The invention provides a method for setting a city initial rainwater interception standard. The city overflow pollution event reduction efficiency and the rainfall pollution reduction efficiency are counted, and high-efficiency areas of the city overflow pollution event reduction efficiency and the rainfall pollution reduction efficiency are found; and required initial rainwater interception rainfall is obtained and enabled to meet requirements of the high-efficiency areas, the flood prevention standard and the water environmental capacity. According to the city initial rainwater interception standard set with the method, initial rainwater with higher pollutant concentration can be intercepted effectively, so that pollution loads of rainfall runoffs to the water environment are substantially reduced.
Owner:上海碧波水务设计研发中心

Mike11 based river water environmental capacity determining method

The invention discloses a Mike11 based river water environmental capacity determining method. The conventional river water environmental capacity calculation methods are low in precision and cannot beused for calculating the dynamic water environmental capacity, and then a dynamic water environmental capacity concept method is introduced, and the problem that the capacity calculation result is not accurate due to the fact that a hydrologic condition is a changeable process can be avoided. The method includes: establishing a water volume and water quality model by using original data and HD and AD modules of MIKE11 software, performing analog computation on space-time distribution of pollutants in a watercourse, and acquiring the chemical oxygen demand COD, the total phosphorus TP, and theammonia nitrogen concentration of control cross sections of each functional area of the watercourse; and using a one-dimensional water environmental capacity model to calculate the natural water environmental capacity of the chemical oxygen demand COD, the total phosphorus TP, and the ammonia nitrogen of the design flow of each functional area in a case that the assurance rate is 70%, 80%, and 90%. The Mike11 based river water environmental capacity determining method can improve the precision of water environmental capacity calculation, and facilitates river ecological environment management.
Owner:TIANJIN UNIV

Urban traffic partitioning method based on differentiation strategy and planning

InactiveCN101866546APerfect traffic planningServing Urban Transportation PlanningData processing applicationsRoad vehicles traffic controlTraffic characteristicTransportation planning
The invention discloses an urban traffic partitioning method based on a differentiation strategy and planning. The method is characterized by comprising the following steps: step 1, dividing city into multiple macro strategy policy subregions according to urban space structure and development direction, regional land utilization property and strength, regional environmental capacity and quality, the supply level of grand transport facilities and transportation demand characteristics; step 2, respectively dividing the macro strategy policy subregions into multiple medium traffic network planning subregions according to land characteristics and traffic characteristics; and step 3. respectively dividing the multiple medium traffic network planning subregions into multiple micro implementation program subregions according to urban road systems, public transportation, parking facilities, outbound transportation junction and local transportation program assessment factors. Compared with the prior art, in the invention, arrangement and planning are carried out on the urban traffic differentiation in an integral and microcosmic view, thus perfecting urban transportation planning and meeting the demand of serving urban traffic planning, construction and management.
Owner:南京市城市与交通规划设计研究院股份有限公司

Method for computing river environmental capacity based on interval number theory

The invention relates to the field of environmental management such as pollutants discharge reduction, total emission control of pollutants and the like, and discloses a method for computing a river environmental capacity based on an interval number theory aiming at the defect of the current method for computing the river environmental capacity on the aspect of considering the uncertainty. The method comprises the following three steps of firstly, collecting and researching river hydrological parameters and parameters of water quality models, combining a field test, and determining the change range of the river hydrological parameters and the parameters of water quality models; secondly, utilizing the interval number theory to establish a computation model of the river environmental capacity based on the interval number theory; and finally, on the basis of river control unit division, computing to obtain the river environmental capacity interval according to the computing rule of interval numbers. Compared with the traditional method for computing the water environmental capacity, the method is scientific, simple and practical and has the characteristics that the uncertainty of a water environmental system is fully considered, the range of application is wide and the like.
Owner:BEIJING NORMAL UNIVERSITY

Preparation method of modified turf adsorbent

The invention involves heavy metal wastewater treatment, specifically a preparation method based on a modified adsorbent of peat. It uses natural peat as the main raw material and alkaline solution to neutralize peat,regulates the pH of mixed solution to 10-12, then adjust the solid-liquid ratio to 1:1-1:100 with alkali solution, stirs, stews, separates the sediments from the supernatant, dries and disintegrates said sediments then prepares the modified peat adsorbent. The adsorption capacity of original peat is improve d, while the stability and the anti-hostile environment environmental capacity are strengthened. And the preparation method using the invention can prepare humic acid as absorbent which further enhance the industrial added value of peat. The raw materials using by the invention is cheap, the source is extensive, the modification process is simple, the technology is stable and reliable; the adsorptive capacity of the prepared modified adsorbent is high and it has features of high efficiency, wide applicability, pollution-free and environmentally friendly,etc.
Owner:SHENYANG INST OF APPLIED ECOLOGY - CHINESE ACAD OF SCI

Optimization calculation method for allowable amount of pollutes poured into sea in different fields of coastal city

InactiveCN105260790AGet Allowable Discharge Capacity QuicklyForecastingEnvironmental resource managementEconomic benefits
The invention provides an optimization calculation method for the allowable amount of pollutes poured into the sea in different fields of a coastal city and belongs to the technical field of environment protection. According to the method, firstly, a target function is set. Based on the target function model, the water environmental capacity is allocated to each of all fields in the administrative region of a city on the premise that the coordinated development of economy, environment and society is ensured. Meanwhile, the maximal allowable discharge capacity of a pollute discharge unit is calculated. After that, a constraint condition is set. According to the constraint condition, on the premise that the principle of economic benefit, the principle of justice, the minimum standard of living and the coordinated development of economy, environment and society are ensured, the water environmental capacity is allocated to each of all fields in the administrative region. The constraint condition is conducted in three aspects, namely the economical aspect, the environmental protection aspect and the social aspect. According to the technical scheme of the invention, the model can be used for calculating the amount of main chemical pollutes poured into the sea in 13 circum-Bohai-sea cities by means of computer software. By adopting the above method, the allowable discharge amounts of COD and DIN in 13 circum-Bohai-sea cities can be quickly calculated, so that the guidance is provided for the pollute discharge amount in each circum-Bohai-sea city.
Owner:YELLOW SEA FISHERIES RES INST CHINESE ACAD OF FISHERIES SCI

Airport delay prediction method and device

An embodiment of the invention provides an airport delay prediction method and an airport delay prediction device, which belong to the technical field of air traffic volume management. The airport delay prediction method comprises the steps of: acquiring environmental data of a selected airport within selected time and an airport actual delay value matched with the environmental data at the selected time, wherein the environmental data includes environmental prediction data; acquiring daily average airport delay time within the selected time according to the airport actual delay value, and acquiring environmental capacity attenuation delay data of the environmental data based on the environmental data, the daily average airport delay time and an environmental capacity attenuation delay calculation rule; establishing an airport delay regression model by utilizing a regression analysis method; and acquiring an airport delay predicted value of the environmental prediction data based on the airport delay regression model, the environmental prediction data and the environmental capacity attenuation delay data of the environmental prediction data. Therefore, the problem that the influence of weather on flight operation cannot be obtained by a decision maker directly or more precisely is solved.
Owner:INST OF RADAR & ELECTRONICS CONFRONTATION ARMY AIR FORCE EQUIP RES INST OF PLA +1

CMAQ model-based rapid atmospheric environment capacity measurement and calculation method, storage medium and terminal

The invention discloses a CMAQ model-based rapid atmospheric environment capacity measurement and calculation method, a storage medium and a terminal. The method comprises the following steps of establishing an emission sequence; simulating air quality; establishing an emissions-concentration response function; calculating the up-to-standard concentration; establishing an emission reduction hypothesis and solving the environmental capacity, sorting the simulation result and the corresponding emission ratio to obtain contribution values of different emission sources to the environmental concentration; according to different pollution source contribution conditions, designing corresponding reduction schemes, and combining the emission-emission of corresponding emission sources; solving a concentration response function, and solving a corresponding pollutant concentration contribution; and combining according to the actual management and control requirements to obtain the standard environment concentration, and calculating to obtain the corresponding pollutant discharge amount, namely the atmospheric environment capacity. According to the present invention, the calculation time and resources are effectively saved, clear physical significance is achieved, calculation is flexible in different pollution control modes, and the method can be used for solving the problem of atmosphericenvironment capacity balance calculation of different scales such as provincial level, urban level and district and county level.
Owner:CHENGDU ACADEMY OF ENVIRONMENTAL SCI

Method and apparatus for improving transparency of water body

The invention discloses a method and an apparatus for improving transparency of a water body. The method, which is a biological method, uses bivalvia to improve the transparency of the water body, and comprises the following steps: selecting the bivalvia species, stocking the bivalvia species, and replacing the bivalvia. The selected bivalvia is hyriopsis cumingii, the size of the suspended stocking hyriopsis cumingii is 50-200 g / ind, and the suspended stocking density is 50-500g / m3. The hyriopsis cumingii are replaced regularly when the size of the hyriopsis cumingii is over 500 g / ind with the hyriopsis cumingii having the size of 50-200 g / ind. By using the method of the invention, the recovery of submerged plants in an eutrophication water body can be promoted, the pollutant in the water body can be significantly reduced, the ecological balance of the water body can be promoted and the environmental capacity can be improved. And with simple and feasible operation and some economic benefit, the method and the apparatus can be applied in the restoration of water bodies such as lakes and rivers.
Owner:GUANGZHOU INST OF ADVANCED TECH CHINESE ACAD OF SCI

Water transfer method based on environment monitoring feedback

InactiveCN102226332AReal-time monitoring of water quality characteristicsAccurate calculationHydraulic engineering apparatusWater qualityHydraulic engineering
The invention relates to a water transfer method based on environment monitoring feedback, and in particular relates to a method for adjusting the water environmental capacity through artificial water transfer, belonging to the field of water conservancy projects. The method provided by the invention comprises the following steps: setting a remote water-quality monitoring station in a lake; carrying out water transfer decision-making by using a water transfer planning center; and carrying out scheduling by using a remote gate control system. The method disclosed by the invention has the advantages that the characteristic quantity of water quality of lake water can be monitored in real time; the water transfer quantity can be accurately calculated according to hydrological forecasting results; and a water transfer gate can be automatically remotely opened so as to carry out water transfer.
Owner:NANJING HYDRAULIC RES INST

Closed-loop river water environment treatment system and method

The invention discloses a closed-loop river water environment treatment system and method. Water body in an inflow reach is lifted to heights and ejected through a discharging tube under the dynamic effect provided by a power pump, the water body firstly is in thorough contact with air and in aeration, then is ecologically purified through wetlands, ecological floating beds or the combination of the wetlands and the ecological floating beds and then overflows to an outflow reach in the form of weir flow, accordingly the mobility of the closed-loop river is enhanced, and the dissolved oxygen level and water environmental capacity of the river are improved. The flow velocity of the river is controlled by a flow control valve, the electricity of the power pump and a desilting pump is provided by the complementation of a solar cell panel, a wind driven generator and a self-providing supply under the control of a power distribution unit, pollutants of sludge and the like at the bottom of a clarifier-tank are removed regularly through the desilting pump, and accordingly the water quality of the river is improved. The closed-loop river water environment treatment system and method are low in operation cost, simple in structure, economical in investment, convenient to operate and remarkable in economic and social benefit, and have research and popularization value under the background of fast urbanization development and risks of energy and water environment.
Owner:ZHEJIANG UNIV

Tidal reach water environment capacity calculation method based on MIKE21

The invention provides a tidal reach water environment capacity calculation method based on MIKE21. The contribution coefficient of each drain outlet to each control section is obtained through earlycalculation of the MIKE21 water environment mathematical model, so that water environment capacity calculation is evolved into solution of a linear programming problem, and the water environment capacity of the tidal river reach can be calculated by adopting a simplex method. The problems that an existing method is large in calculation amount, not unique in calculation result, greatly influenced by human subjective factors and the like are solved. The method relates to the field of environmental management such as tidal reach water environment capacity and total pollution discharge limit control, and can be widely applied to calculation of the environment capacity of a bidirectional flowing water body under the tidal action, and even can be applied to calculation of sea area water environment capacity.
Owner:CHINA POWER CONSRTUCTION GRP GUIYANG SURVEY & DESIGN INST CO LTD

Emission control matching method for converting private cars to buses

The invention relates to an emission control matching method for converting private cars to buses. The method comprises the following steps of: firstly, determining the actual pollutant concentrationand the environmental capacity of a current road; determining whether social vehicles need to be converted to the buses or not on the current road according to the size relationship of the actual pollutant concentration and the environmental capacity; and if yes, calculating to obtain the conversion coefficient.
Owner:ZHEJIANG UNIV OF TECH

Nitrogen-saving synergistic fertilization method which is suitable for annual crop rotation of winter wheat/summer corn and takes soil environmental capacity into account

The invention discloses a simple nitrogen-saving synergistic fertilization method which is suitable for annual crop rotation of winter wheat / summer corn in the Huang-huai area and takes the soil environmental capacity into account. The method comprises the steps of: performing one-time basal application of 155-180 kg / hm<2> of N, 100-150 kg / hm<2> of P2O5 and 80-90 kg / hm<2> of K2O by combining fieldpreparation before sowing of the wheat in a wheat planting season; and in a corn planting season, performing one-time basal application of 155-180 kg / hm<2>, 100-150 kg / hm<2> of P2O5 and 80-90 kg / hm<2> of K2O when the corn is sowed, wherein the N comes from slow release urea. The fertilization method is environmentally friendly and labor-saving and time-saving, and has low cost and high economic benefits, the application amount of labor can be reduced, and the method has broad market and application prospects.
Owner:HENAN AGRICULTURAL UNIVERSITY +1

Single river channel inner overflow water environment treatment system and method

The invention discloses a single river channel inner overflow water environment treatment system and a method. Water in a water inlet river reach is lifted to a high place under the effect of power supplied by a power pump, and is ejected by a water outlet pipe; the water is fully contacted with air for aeration, is ecologically purified through a wetland or an ecological floating bed or a combination of the two, and flows back into the other end of a treatment river reach in a weir flow manner to form a planar ring current, so that the river fluidity is improved, the river dissolved oxygen level and the water environmental capacity are improved; the river flowing speed is controlled by a flow control valve; electric power of the power pump and removable pump is complemented and supplied by a solar panel, a wind driven generator and a self-prepared power supply under control of a power distribution unit; and such pollutants as sludge at the bottom of a purification pool are cleaned termly through the movable desilting pump to improve the river water quality. The single river channel inner overflow water environment treatment system and method are prominent in economic and social benefits, and is higher in research and popularization value under the background of rapid urbanization development and energy and water environment crisis.
Owner:ZHEJIANG UNIV

Farmland phosphorus-saving synergistic fertilization method taking into account soil environmental capacity under rice-wheat rotation system

PendingCN108668584AGuarantee nutritional needsBreak through the traditional concept of applicationFertilising methodsPotassiumNitrogen
The invention discloses a farmland phosphorus-saving synergistic fertilization method which is suitable for use in a rice-wheat rotation zone along Yellow River and takes into account soil environmental capacity, the method is as follows: in a wheat planting season, before planting of wheat, by combined with land preparation, 90-110 kg / hm<2> of P2O5 are basically applied, and nitrogen and potassium fertilizers are applied according to local customary dosages; and in a rice planting season, nitrogen and potassium fertilizers other than phosphorus are normally applied according to local customary dosages. The farmland phosphorus-saving synergistic fertilization method not only can ensure the demand for phosphorus nutrition of crops, but also can control excess phosphorus accumulation in farmland soil by scientific phosphorus application, can guide the scientific use of the phosphate fertilizer in current agricultural production, and is of great significance for saving phosphorus resources and protecting water environment.
Owner:HENAN AGRICULTURAL UNIVERSITY +1

Water environmental capacity calculation method for tidal water network area

ActiveCN109326332AOvercoming the Insufficiency in Guaranteeing the Guarantee Rate of Water Quality in Controlled SectionsOvercome deficienciesChemoinformaticsElectric digital data processingRiver networkRainfall runoff
The invention discloses a water environmental capacity calculation method for a tidal water network area, and provides the water environmental capacity calculation method for the tidal water network area based on a mathematical statistical analysis method and considering point source and surface source synergistic influence. Aiming at the uncertainty of hydrological water quality parameters such as water flow direction, flow rate, concentration change and the like in the tidal water network area, a non-deterministic medium frequency statistical analysis method is combined with deterministic rainfall runoff, surface source pollution, and a river network hydrological water quality mathematical model, thereby providing the water environmental capacity calculation method based on control of section water quality standards and considering the point source and surface source synergistic influence, and overcoming the defects of the existing river network water environmental capacity calculation method in the aspect of ensuring the assurance rate of control of the section water quality standards.
Owner:JIANGSU PROVINCIAL ACAD OF ENVIRONMENTAL SCI

Method for technical evaluation on nutrient standards of lakes

InactiveCN102609630AWater protection functionPrevent lake eutrophicationSpecial data processing applicationsEutrophicationNet national product
A method for technical evaluation on nutrient standards of lakes includes the following steps: 1) computing the maximal permissible pollutant quantity of the nutrients in the lakes according to the nutrient standards and functions of the lakes; 2) analyzing conditions of various pollution sources in lake basins systematically and quantity of the pollution sources entering the lakes, and building an optimized model and computing reduced cost for achieving the nutrient standards of the lakes on the condition that the lakes are under the limit of water environmental capacity; 3) evaluating primarily: controlling the proportion of the cost accounting in the gross national product by means of lake eutrophication, measuring affection on development of the local national economy from cost control by eutrophication and judging whether the eutrophication control achieves the preset control effect or not; and 4) secondarily evaluating the control standards failed in the primary evaluation. The method computes environmental capacity of the lakes and standard nutrient reduction by means of TMDL (total maximum daily load), controls the proportion of the cost accounting in the gross national product by means of lake eutrophication and measures affection on development of the local national economy from standard cost.
Owner:CHINESE RES ACAD OF ENVIRONMENTAL SCI

A Calculation Method of Small Watershed Environmental Capacity Supported by GIS Technology

The invention relates to a method for calculating a small watershed environmental capacity under the support of GIS (Geographic Information System) technology. The problem of imprecise calculation result which is caused by the influence of a non-point source or the difference of river inlet quantity of the non-point source of each control unit is solved. The method comprises the following steps of determining the watershed range of the control unit; using a hydrologic analysis module in an ArcGIS software and the method of combining practical river data positioned and corrected by GPS (Global Position System) to determine the land area catchment range of the control unit so as to obtain the control unit for land and water response; evaluating the water quality status; using statistic data of a pollution source and combining the practical study result of the pollution source to summarize the pollutant river inlet quantity of the pollutant of a point source and the non-point source according to the control units; reversely calculating the flow of each control cross section according to water balance; and calibrating, verifying and using water quality model parameters, and deducting the non-point source pollutant inlet of each control unit to obtain the available water environmental capacity. The river inlet quantities are calculated by considering the emission difference of non-point source pollutants in each control unit by using the GIS technology, and the watershed available environmental capacity is determined.
Owner:ZHENGZHOU UNIV

Method for treating stainless steel acid-mixed wastewater

The invention discloses a method for treating stainless steel acid-mixed wastewater. The method comprises the following steps: step 1, carrying out pretreatment, filtering the waste water through an automatic microfilter to remove the particles; step 2, separating and concentrating the pretreated waste water through a charged membrane to separate and concentrate acid radicals, fluorine ions, nitrate ions and iron ions in the acid-mixed waste water; step 3, incinerating the remaining waste water at high temperature, and finally converting the waste water into regenerated acid and iron oxide powder through high temperature incineration. The treatment method of the stainless steel acid-mixed waste water provided by the invention can recover most of the fluorine ions, nitrate ions and iron ions before treating the mixed acid waste water, and is of great significance to the reduction of the treatment cost of subsequent medicament neutralization and defluorination, sludge reduction and denitrification treatment, and the improvement of the environmental capacity.
Owner:JIANGSU BESITE WATER SCI & TECH

Fertilization method for high-yield cultivation of winter wheat in fluvo-aquic soil area in northern Henan taking into account environmental capacity

ActiveCN104186156BScientific prevention and control of pollutionPromote the coordinated development of protectionFertilising methodsHorticultureResearch ObjectPotassium
The invention relates to a fertilization method for high-yield cultivation of winter wheat in fluvo-aquic soil areas in northern Henan, which takes into account environmental capacity, comprising the following steps: (1) crushing all summer corn stalks and returning them to the field; hm 2 , to contain P 2 o 5 Meter, base application of phosphorus fertilizer 90 ~ 180 kg / hm 2 , to contain K 2 O meter, basal application of potassium fertilizer 80 Kg / hm 2 , the plowing depth is 15~18cm; (2) Sowing wheat seeds in mechanical drills, the sowing depth is 3~5cm, and the plant density at the seedling stage is 2.6 to 2.8 million plants / hm 2 (3) In terms of N content, topdressing nitrogen fertilizer at the jointing stage is 76-125 kg / hm 2 After that, irrigate in time. The invention takes the wheat-soil-fertilizer system as the research object, fertilizes rationally, seeks high-yield wheat and environment-friendly chemical fertilizer input, scientifically prevents non-point source pollution, and promotes the coordinated development of agricultural production and environmental protection.
Owner:INST OF PLANT NUTITUION & RESOURCE ENVIRONMENT HENAN ACADEMY OF AGRI SCI

Fertilization methods for high-yield cultivation of summer maize in fluvo-aquic soil areas in northern Henan taking into account environmental capacity

ActiveCN104756699BScientific prevention and control of pollutionPromote the coordinated development of protectionFertilising methodsPlant cultivationTriticeaeTillage
The invention relates to an environment capacity-balanced high-yield cultivation fertilizing method for summer maize of the meadow soil district of the North Henan. The environment capacity-balanced high-yield cultivation fertilizing method includes steps that (1) smashing all the winter wheat straw and mulching, basically applying nitrogenous fertilizer according to 76-112 kg / hm2 weighted by N content, phosphatic fertilizer according to 100-200 kg / hm2 weighted by P2O5 content and potash fertilizer according to 120 kg / hm2 weighted by K2O content, wherein tillage is not needed; (2) interplanting at wheat ridges in 5 to 10 days before harvesting wheat or performing non-tillage seeding after harvesting the wheat, at latest finishing seeding on 10th June, mechanically sowing maize seeds in line, wherein the sowing depth is 3 to 5 centimeters, and the plant density is 55000-72000 plant / hm2 at the seedling stage; dressing nitrogenous fertilizer according to 76-112 kg / hm2 weighted by N content at the small bell-mouth stage, and watering timely; (4) after the maize bracts yellow for 7 to 10 days, harvesting when the milk lines disappear and the base black layers appear. The environment capacity-balanced high-yield cultivation fertilizing method for the summer maize of the meadow soil district of the North Henan uses maize-soil-fertilizer as a system, the fertilizing is reasonable, the fertilizer input seeks high maize yield and environment friendliness, the non-point source pollution is prevented scientifically, and the agricultural production and environment protection develop harmoniously.
Owner:INST OF PLANT NUTITUION & RESOURCE ENVIRONMENT HENAN ACADEMY OF AGRI SCI

A new method for estimating the environmental capacity of fine particulate matter and its precursors

The invention provides a novel method for estimating the environment capacity of fine particles and precursors of the fine particles. The novel method comprises steps as follows: obtaining the total atmosphere static capacity; obtaining the total conveying quantity of pollutants in the horizontal direction; obtaining the total quantity of dry deposition and the total quantity of wet deposition and obtaining the total quantity of deposition through summation; obtaining the total quantity of horizontal diffusion and the total quantity of vertical diffusion, and obtaining the total quantity of diffusion clearing through summation; obtaining the atmosphere dynamic capacity through summation of the total conveying quantity in the horizontal direction, the total quantity of deposition and the total quantity of diffusion clearing; performing summation on the total atmosphere static capacity and atmosphere dynamic capacity, performing correction and obtaining the corrected environment capacity of the pollutants. The method has the advantages as follows: the containing capability of the atmosphere to the pollutants is quantified through generation, conversion, extinction and other physical and chemical processes on the pollutants, and the environment capacity of the fine particles and the precursors of the fine particles has the characteristic of spatiotemporal dynamics; when the provided method is used for estimating the environment capacity of the atmospheric pollutants, the result more approaches the real monitoring value. The method further has the advantages of simple and rapid estimation process and small calculated quantity.
Owner:INST OF ATMOSPHERIC PHYSICS CHINESE ACADEMY SCI

Preparation method of modified turf adsorbent

The invention involves heavy metal wastewater treatment, specifically a preparation method based on a modified adsorbent of peat. It uses natural peat as the main raw material and alkaline solution to neutralize peat,regulates the pH of mixed solution to 10-12, then adjust the solid-liquid ratio to 1:1-1:100 with alkali solution, stirs, stews, separates the sediments from the supernatant, dries and disintegrates said sediments then prepares the modified peat adsorbent. The adsorption capacity of original peat is improve d, while the stability and the anti-hostile environment environmental capacity are strengthened. And the preparation method using the invention can prepare humic acid as absorbent which further enhance the industrial added value of peat. The raw materials using by the invention is cheap, the source is extensive, the modification process is simple, the technology is stable and reliable; the adsorptive capacity of the prepared modified adsorbent is high and it has features of high efficiency, wide applicability, pollution-free and environmentally friendly,etc.
Owner:SHENYANG INST OF APPL ECOLOGY CHINESE ACAD OF SCI

Method for technical evaluation on nutrient standards of lakes

InactiveCN102609630BWater protection functionPrevent lake eutrophicationSpecial data processing applicationsEutrophicationNet national product
A method for technical evaluation on nutrient standards of lakes includes the following steps: 1) computing the maximal permissible pollutant quantity of the nutrients in the lakes according to the nutrient standards and functions of the lakes; 2) analyzing conditions of various pollution sources in lake basins systematically and quantity of the pollution sources entering the lakes, and building an optimized model and computing reduced cost for achieving the nutrient standards of the lakes on the condition that the lakes are under the limit of water environmental capacity; 3) evaluating primarily: controlling the proportion of the cost accounting in the gross national product by means of lake eutrophication, measuring affection on development of the local national economy from cost control by eutrophication and judging whether the eutrophication control achieves the preset control effect or not; and 4) secondarily evaluating the control standards failed in the primary evaluation. The method computes environmental capacity of the lakes and standard nutrient reduction by means of TMDL (total maximum daily load), controls the proportion of the cost accounting in the gross national product by means of lake eutrophication and measures affection on development of the local national economy from standard cost.
Owner:CHINESE RES ACAD OF ENVIRONMENTAL SCI

A method for determining production resettlement standard

InactiveCN109272437AIncrease incomeGuaranteeing resettlement planning goalsData processing applicationsAgricultural landEnvironment of Albania
The invention relates to the field of land expropriation and resettlement planning for water conservancy and hydropower projects, in particular to a method for determining a production resettlement standard. Starting from the planning objectives, the method provides a rigorous planning thinking for the determination of resettlement planning standards of planting industry, and is a further refinement of the norms. Compared with the traditional method to determine the resettlement standard of planting industry, it has the following advantages: the change of agricultural land area leads to the change of agricultural income; the way to deal with income composition is determined according to the influencing factors of income composition; the influence of the gap of secondary and tertiary industry development level between original residential area and resettlement area on income. Considering the environmental capacity of the resettlement area, and under the condition that the configurable agricultural land can not meet the needs, the paper puts forward some measures to improve the income of rural migrants, such as rebuilding low-yield land and improving supporting facilities, and givesthe calculation formula to further ensure the realization of the resettlement planning objectives.
Owner:CHANGJIANG SURVEY PLANNING DESIGN & RES

Estimation method of bay environmental capacity based on comprehensive model of ecosystem dynamics

The invention discloses a bay environment estimation capacity method based on an ecological system dynamic comprehensive model. The method comprises the steps of collecting data, selecting environmentcapacity control demonstration points, setting an ocean environment water quality standard corresponding to the bay environment capacity, preparing data, simulating bay tidal current and the seawaterwater level, simulating bay COD emission distribution through a marine ecological model, simulating discharged COD diffusion and dissolving processes through a hydrodynamic model, establishing a CODsea area water quality response field, and calculating the largest allowable bay COD bay environment capacity. According to the method, the bay environment capacity is simulated by coupling COD discharge under the condition that submarine topography and tidal hydrodynamic characteristics are considered. The method takes the particularity of a bay terrain and change of tidal ebb and tide bulge intoconsideration, a control threshold is set according to specific bay environment supervision requirements for coupling simulation, and the method can be applied to bay environment supervision and operation more conveniently.
Owner:广西博环环境咨询服务有限公司
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