37 results about "Environmental capacity" patented technology

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.

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.

The invention relates to a cement-stabilizing broken stone used for highway subgrade, which comprises the following ingredients in weight percent: 4.0%-5.0% of clinker-free slag cement, 90%-92% of aggregate and the balance of water. The cement-stabilizing broken stone has the advantages of ensuring sufficient construction time, developing a new resource, lightening the environmental capacity, changing the waste materials into things of value, and obtaining remarkable economical benefits and social benefits.

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.

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.

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.

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.