36results about How to "High ammonia nitrogen content" patented technology

The invention discloses a treatment method for slaughter wastewater. The treatment method includes the steps of pretreatment, biochemical treatment, precipitation separation, oxidative decolorization, activated carbon adsorption, disinfection treatment and sludge concentration. Through adopting the advanced, practical, mature and reliable treatment technology, the inflow requirements for water large in water quality fluctuation and amount are met, and it is ensured that the treated wastewater can not be discharged until reaching standards. By the adoption of the reasonable technology and reasonable arrangement, the construction cost is lowered as far as possible, and on the premise of guaranteeing safe, economical and stable operation of a system, the good treatment effect is achieved with the minimum investment. Based on the rule of the advanced and mature technology and reliable quality, the relation between manual operation and automatic control is reasonably handled, an automation technology is adopted for the step where manual operation is inconvenient, and the labor cost is high, and therefore the operation management level of the system is increased.

A process for the preparation of granular fertilizer grade DAP (a product composed of ammonium phosphates, principally diammonium phosphate, resulting from the ammoniation of phosphoric acid, as defined in Official Publication No. 52 of the Association of American Plant Food Officials, dated 1999) comprising partially preneutralizing orthophosphoric acid with ammonia, completing the ammoniation of the orthophosphoric acid with ammonia in a rotary ammoniator-granulator to provide granular DAP, sizing the granular DAP to provide the granular DAP product, reducing the particle size of the oversized granular DAP, and recycling the undersized granular DAP and the sized-reduced oversized granular DAP to the ammoniator-granulator. The ammoniacal nitrogen concentration of the granular DAP recycle, hence the granular DAP product, is enhanced by subjecting the finely-divided recycled granular DAP to anhydrous gaseous ammonia which is at a super atmospheric pressure and which is at a temperature sufficient to maintain said anhydrous ammonia in the gaseous state. The increase in the ammoniacal nitrogen concentration is a function of the absolute ammonia pressure, the initial moisture content of the granular DAP recycle, and the contact time of the ammonium with the granular DAP recycle.

The present invention relates to a process method for industrial wastewater emission reduction and resource utilization, specifically to a method for resource utilization of ammonia nitrogen by using a heat pump rectification technology and a steam stripping deamination process. According to the present invention, the 1000-80000 mg / L of the ammonia nitrogen wastewater treated by the process of the present invention achieves the national first-class ammonia nitrogen emission standard, the ammonia in the wastewater can be recovered and utilized in the ammonia and ammonia water form, and the steam consumption of the deamination process is 25-50 kg / ton wastewater.

The invention discloses a rice and crayfish ecological co-culturing method. According to the method, field ridges are built around a rice field, the water content in the rice field is increased for facilitating the growth of crayfish, and aquatic plants are planted to provide habitat and concealed places for the crayfish, so that a good growth environment is created for the crayfish. Meanwhile, after the crayfish are caught, organic fertilizers are added for rice production through metabolism products of the crayfish, so that rich organic fertilizers can be provided for the growth of rice, andthe use amounts of chemical fertilizers and pesticides in a rice planting process are reduced. The growth of the rice and crayfish is mutually promoted, and meanwhile, the space of the rice field iseffectively utilized. In the aspect of water quality retention, organic components contained in soil and feed are decomposed into ammonia, so that the ammonia nitrogen content in the water is increased, and the water is easily eutrophicated. A multi-microbial biological agent is sprayed to the water regularly, and the ammonia nitrogen in the water can be fixed and converted through biological metabolism of bacillus, photosynthetic bacteria, nitrifying bacteria and actinomycetes in the biological agent, nutrition is provided for the growth of the rice, and meanwhile the ammonia nitrogen contentin the water is reduced. The crayfish cultured by the method disclosed by the invention is fast in growth and regular in specification, normal production of the rice is not influenced, the paddy field is used for two purposes, and incomes are greatly improved.

The invention discloses a method for deep treatment of pesticide wastewater. Firstly, Fenton oxidation is adopted for pretreatment, and then the effect of efficiently removing CODCr and ammonia nitrogen is realized in combination with adsorption and flocculation. A Fenton reagent is improved and the oxidative degradation capacity of the reagent is improved; alum in an adsorption flocculant reacts with sodium silicate to produce aluminum hydroxide and silicic acid (silica) flocculent precipitates, the adsorption flocculant is combined with nonionic polyacrylamide and activated carbon, and the adsorption flocculation effect is improved; the sodium silicate replaces weak bases such as ammonia water, carbonate and the like, and rise of the ammonia nitrogen content and CODCr in wastewater is avoided. The method is applied to deep treatment of the pesticide wastewater and has higher oxidative degradation and adsorption and flocculation effects, and the removal rate of CODCr and ammonia nitrogen in the wastewater is high.

The invention discloses a rice and cray synergetic ecological breeding method. Soil is loosened and insect pests are removed for rice by breeding crays. According to the characteristic of rice absorbing nutritional elements in a water body and a shading action, the breeding water body is purified, habituating and concealing places are also provided for the crays, a good growth environment is created for the crays, and the quality of the cray breeding product is improved. The metabolic products of the crays and feces of the crays increase organic fertilizers for production of rice in the comingyear, so that rich organic fertilizers can be provided for growth of rice. Dosages of chemical fertilizers and pesticides are reduced in the rice planting process to promote growth. Meanwhile, the space of the rice paddy is utilized effectively. In the water quality keeping aspect, organic components in soil and feeds are decomposed to ammonia, so that the ammonia and nitrogen content in the water body is increased. The water quality is easy to eutrophicate. The crays bred are quick to grow and order in specification, and normal production of rice is not affected, and one rice paddy is dual-purpose, so that the income is increased greatly.

The invention discloses a fermenting method for organic solid wastes. The fermenting method comprises the following operation steps: (1) getting organic solid wastes as raw materials, regulating a C / N ratio to be (20-35) to 1 and regulating the moisture content to be 55-70%; (2) mixing desulfurized gypsum with mass fraction of 5-15% in terms of wet weight of organic solid waste raw materials in the step (1) with the organic solid wastes obtained in the step (1) to form a pile body and ferment. In order to solve the problems that air is polluted by much ammonia nitrogen emission in a fermentation treatment process of the organic solid wastes in the prior art, and the fertilizer efficiency after fermentation is not good, the invention discloses the fermenting method for the organic solid wastes, which aims to improve the fertilizer efficiency after the fermentation while the ammonia nitrogen emission amount in the organic solid waste fermentation process is reduced.

The invention discloses a lactobacillus plantarum QR19. The lactobacillus plantarum QR19 is preserved in the China General Microbiological Culture Collection Center, the preservation name is QR19, andthe preservation number is CGMCC NO.18053. Application of the lactobacillus plantarum QR19, the lactobacillus plantarum QR19 is used for soy sauce production process, the lactobacillus plantarum QR19is preferably compounded and inoculated with zygosaccharomyces rouxii S96 for soy sauce production process, especially for soy sauce production with high-salt liquid-state process. The biogenic aminecontent of the soy sauce is reduced while the SOD activity is increased through a method of microbial control, high ammonia nitrogen content can be maintained, the flavor of the soy sauce is guaranteed, and a new idea for improving the quality of soy sauce brewing is provided.

The invention relates to a high-concentration ammonia-nitrogen wastewater treatment set device, which comprises a dissolved medicine dissolution box, a wastewater flow stabilizing and flow guiding tube, a sand and stone exchange cleaner, filter materials, a sand blocking water distributor, sand and stone air stripping pipe, an air compressor output pipe, an air input pipe, a monitoring probe, an automatic control system and the like. The invention can treat the high-concentration ammonia-nitrogen wastewater which can not be treated by a physical chemical and biochemical method, at the same time, the defect that alkali addition, acid addition or temperature raising is needed during the high-concentration ammonia-nitrogen wastewater treatment by other methods for reaching the treatment effect can be avoided, the operation cost is reduced, and the area of the occupied ground is saved. The saturated filtering materials can be used as slow-release fertilizers for plants after being pulverized, and no secondary pollution is caused after the whole equipment operates to the filter material recovery.

The invention discloses a waste gasification combined heat and power system with flue gas circulation. The system comprises a primary waste pretreatment system, wherein a primary waste material bin ofthe primary waste pretreatment system is divided into two paths, one path is connected to a waste leachate treatment system, and the other path is connected to a gasification furnace of a waste gasification synthesis system through a drying screening module, the waste leachate treatment system and the waste gasification synthesis system are all connected to a waste ash treatment system; the wastegasification synthesis system is further connected to a synthesis gas heat exchanger of a synthesis gas waste heat utilization system through a synthesis gas purification system, the synthesis gas purification system is connected to a flue gas purification and waste heat system through a synthesis gas power generation system to realize the waste gasification combined heat and power, and the fluegas purification and waste heat system is connected to the gasification furnace through a flue gas circulation system to realize flue gas circulation. According to the waste gasification combined heatand power system with flue gas circulation, the waste gasification process and the gasification synthesis gas purification process are optimized, and finally the requirements of the waste gasification power generation and heat supply are met; and the energy utilization efficiency of the whole system is further improved.

The invention discloses an organic fertilizer applicable to litchi and longan and a preparation method thereof, which relate to the field of agriculture, in particular to the field of organic fertilizers. The organic fertilizer applicable to litchi and longan consists of the following components in parts by weight: 15 to 25 parts of longan pits; 15 to 25 parts of litchi pits; 5 to 10 parts of longan shells; 5 to 10 parts of litchi shells; 5 to 10 parts of bagasse; 2 to 3 parts of kapok; 20 to 25 parts of biogas residue; 3 to 5 parts of pelelith powder. The preparation method of the organic fertilizer includes the following preparation steps: preprocessing, fermentation, refermentation and drying and pelletizing. The invention sufficiently utilizes nitrogen, phosphorus and other nutrient substances which are rich in litchi and longan, coupled with the combination of the pelelith powder and the biogas residue, a large quantity of discarded pits are sufficiently utilized, and therefore the organic fertilizer is environment-friendly and practical.

The invention discloses an ecological rice-lobster co-culture method. By employing the method disclosed by the invention, end product lobsters of two crops and rice of one crop can be harvested per year, lobster-rice continuous cropping and lobster-rice mixed cropping are organically combined; artificial compounded feeds are employed at different growth stages, so that the requirements of lobsterson nutrients at a rapid growth stage are met, the utilization efficiency of nutritional ingredients of the feeds is also increased, and pollution to culture water caused by remnant feeds and manure is reduced; the planting of rice implements a one-row-planted one-row-emptied mode, and thus, sufficient space and places are provided for the lobsters to enter a rice field for exercise, look for foodand eliminate weeds and insect pests; and meanwhile, a border effect is fully utilized, so that the growth of the rice is promoted, the pesticide application of the rice field is reduced, the planting cost is reduced, and green rice is produced.

The invention provides an ecological filter dam based on efficient in-situ interception of pollutants and application of the ecological filter dam, and belongs to the technical field of water environment treatment. The ecological filter dam sequentially comprises a dam front intercepting area, a front dam, a biological contact oxidation area and a rear dam in the water flow direction. The dam front intercepting area comprises an overwater trash holding buoy and a fishing net; the front dam is formed by stacking a plurality of ecological gabion single bodies, which are respectively filled withmedium and small-particle-size matrixes and large-particle-size matrixes in a staggered manner; an aeration system in the biological contact oxidation zone comprises an aeration pipe arranged at the bottom of the river channel and a microporous aeration disc attached to the aeration pipe; a filler supporting body is arranged above the aeration system, and biological filler is hung on the filler supporting body; the rear dam is formed by stacking a plurality of ecological gabion single bodies filled with matrixes with superfine particle sizes in a staggered mode. The ecological filter dam can effectively improve the removal capacity of the filter dam, the problem of dam body blockage is fundamentally solved, and the service life of the ecological filter dam is greatly prolonged. And meanwhile, the dam body adopts modular units, is easy to construct, can be replaced and disassembled in time, and is wide in applicability.

The invention discloses instant beef fermented soybean paste and a making method thereof. The beef fermented soybean paste is prepared from, by weight, 40-45 parts of rapeseed oil, 22-25 parts of beef, 13-15 parts of fermented soybeans, 12-15 parts of dried peppers, 8-9 parts of soy sauce, 9-11 parts of vegetables, 0.2-0.25 part of water chestnut powder, 6-10 parts of spices, 3-4 parts of white granulated sugar, 3-4 parts of monosodium glutamate and 1-2 parts of chicken essence. The prepared beef fermented soybean paste is bright in color and luster, rich in flavor and pure, fresh and tender in taste, no natural nutrients are added, and the instant beef fermented soybean paste can serve as a meal cooking seasoning and can also be directly eaten.

The invention discloses a high-astaxanthin rice shrimp breeding method. The method is characterized by comprising the following steps that (1) soil is managed, farmyard manure is applied, and avermectins is adopted for soil treatment; (2) a rice shrimp field is divided into a breeding protecting dam, a rice shrimp breeding ditch and a paddy rice planting area, and protected with two layers of nylon nets so as to reduce rice shrimp escaping; (3) water plants are transplanted at a water surface area ratio of 25-30%; (4) young shrimps of 2-4 cm long are put into the field at the amount of 2400-2800 per mu, water in the rice field is changed through a water pump regularly, and the oxygen content in the water are increased; (5) for breeding management, rice shrimp feed is prepared, the adding amount of the rice shrimp feed is changed according to the growth phase, and the rice field is sprayed with a multi-bacterium biological agent. Through the preparation of the rice shrimp feed and the feeding method, the high-astaxanthin rice shrimp breeding method can improve the water quality environment of the rice field, promote the content improvement of astaxanthin in the rice shrimp, and meanwhile improve the yields of the bred rice shrimp and the rice. The high-astaxanthin rice shrimp breeding method has the advantages of being simple, practical and obvious in effect.

The invention provides a culture method for promoting leech growth, including the following steps: 1) a culture pond is constructed; an intake pipe is installed above the left side of the aquaculturepond; an L-shaped outlet pipe is arranged below the right side of the culture pond; the L-shaped outlet pipe is horizontally arranged at the bottom of the culture pond; the L-shaped outlet pipe is vertically arranged at a vertical position; a plurality of drainage valves are arranged at a vertical position of the L-shaped outlet pipe; the inner part of an transverse position of the L-shaped outletpipe is provided with a filter screen; the bottom and surrounding of the culture pond are paved with cement to harden; 2) leech seedlings are immersed in a Chinese herbal compound and put on an artificial floating bed; 3) the artificial floating bed is moved downward along a positioning pile to submerge water pepper and eomecon in the water in the evening every 1 to 2 days; and moved upward alongthe positioning pile to make the water pepper and the eomecon grow rapidly in the morning; artificial feeds are put in every 2 to 4 days; 4) the seedlings are continuously cultured to obtain the leech. The culture method for promoting the leech growth has the characteristics of good water quality and fast growth.

The invention discloses a garbage gasification and combined heat and power system comprising a raw garbage pretreatment system; a raw garbage bin of the raw garbage pretreatment system is divided intotwo paths, one path is connected with a garbage leachate treatment system, the other path is connected with a gasification furnace of a garbage gasification synthesis system, and both the garbage leachate treatment system and the garbage gasification synthesis system are connected with a garbage ash treatment system; and the garbage gasification synthesis system is also connected with a synthesisgas heat exchanger of a synthesis gas waste heat utilization system by virtue of a synthesis gas purification system, and a washing tower of the synthesis gas purification system is connected with aflue gas purification and waste heat utilization system by virtue of a synthesis gas power generation system, so that the aims of garbage gasification as well as combined heat and power of the systemare achieved. Garbage is effectively purified by using a gasification process and a subsequent synthesis gas purification process in combination with requirements of a combustion gas turbine for the high calorific value, low tar and low metal content of fuel gas, the treated synthesis gas is capable of meeting the combustion requirement of the combustion gas turbine, and finally, the requirementsfor garbage gasification, power generation and heat supply are met.

The invention discloses a method for treating aged landfill leachate by using mineralized sludge, which specifically comprises the following steps of: (1) pretreatment: regulating the pH value and temperature of aged landfill leachate, and filtering the aged landfill leachate to remove suspended matters and large-particle pollutants in the aged landfill leachate, thereby obtaining pretreated agedlandfill leachate; (2) sludge treatment: adding mineralized sludge into the pretreated aged landfill leachate, then stirring or aerating, standing, and discharging supernatant; and (3) advanced treatment: sequentially carrying out ultrafiltration treatment, nanofiltration treatment and reverse osmosis treatment on the supernatant, and finally discharging the landfill leachate. Compared with an existing aged landfill leachate treatment method, the method has the advantages that the problems of high treatment cost and poor treatment effect of the aged landfill leachate are solved, an effective way is found for treatment of the aged landfill leachate, and the method completely conforms to the environment-friendly concept of treating waste with waste.

The invention relates to a duck breeding wastewater treatment process and a resource recovery method, and the method comprises the following steps: coagulating sedimentation treatment: removing fine suspended solids and colloidal substances in duck breeding wastewater; blow-off pre-treatment: removing and recovering ammonia nitrogen, so that the inhibition effect of high ammonia nitrogen on anaerobic reaction in the later period can be avoided; anaerobic biological treatment: carrying out anaerobic biological treatment by adopting an anaerobic device, and degrading organic matters in the duckbreeding wastewater by utilizing facultative or obligate anaerobic bacteria in the anaerobic biological treatment; struvite precipitation treatment: carrying out advanced treatment on anaerobic effluent by a struvite precipitation method; aerobic biological treatment: conducting aerobic biological treatment through an aerobic device, and utilizing metabolic activity of aerobic microorganisms in aerobic biological treatment, so up-to-standard discharge of the duck breeding wastewater is achieved. According to the method, resource substances such as ammonia gas, methane and struvite can be recycled while the duck breeding wastewater is treated, and meanwhile stabilization, harmlessness and recycling of duck breeding wastewater treatment are achieved.

The invention discloses an oil-removing and hole-conditioning method of a printed circuit board PTH process, an alkaline oil-removing and hole-conditioning agent and a preparation method thereof, the oil-removing and hole-conditioning method of the printed circuit board PTH process comprises an alkaline oil-removing and hole-conditioning process, the alkaline oil-removing and hole-conditioning agent is used for treating a printed circuit board in the alkaline oil-removing and hole-conditioning process, and the alkaline oil-removing and hole-conditioning agent is used for treating the printed circuit board in the alkaline oil-removing and hole-conditioning process. The alkaline oil-removing pore-conditioning agent comprises a water solvent and the following components dissolved in the water solvent in percentage by mass: 3.0%-6.0% of inorganic alkali, 0.5%-1.5% of a charge regulator, 3.0%-6.0% of an inorganic salt complexing agent, 3.0%-6.0% of a nonionic surfactant and 3.0%-6.0% of an accelerator, the charge regulator is an amidine compound, and the accelerator is a sulfenamide compound. According to the method, the hole wall is subjected to hole finishing in the alkaline oil removal process, so that the hole wall has positive charges, adsorption of the hole wall to colloid palladium with negative charges is enhanced, and the hole wall copper plating quality is improved.

The invention provides a treatment system for domestic sewage of an ecological highway service area. The treatment system comprises a kitchen effluent separation and treatment device, a toilet effluent separation and treatment system and a solid waste fermentation device, wherein the toilet effluent separation and treatment system comprises a solid-liquid separation device, a hydrolytic acidification device is arranged at a wastewater outlet of the solid-liquid separation device in a communicated manner, and a biological denitrification device and a constructed wetland are sequentially arranged at the downstream part of the hydrolytic acidification device; a wastewater outlet of the kitchen effluent separation and treatment device is communicated with a water inlet of the constructed wetland; a feed port of the solid waste fermentation device is communicated with a waste residue discharge port of the kitchen effluent separation and treatment device and a solid material discharge port of the solid-liquid separation device. According to the treatment system, classifying treatment of kitchen effluent and toilet effluent can be realized, ammonia nitrogen and COD are removed from wastewater, the treatment device adopts the constructed wetland, and the problems that a water treatment structure occupies an overlarge area and landscape of the service area is affected can be solved.

The invention relates to a millet-dicranostigma leptopodum multiple cropping planting method. The method comprises the following steps that S1, in the middle ten days of June, after watering and moisture formation or raining, when the soil moisture content is appropriate, 200kg / mu-300 kg / mu of organic fertilizer are applied at the bottom, 30kg / mu-40 kg / mu of compound fertilizer is applied in a combined manner, drought-resistant millet varieties are sown, matched herbicide is sprayed in the 3 leaf stage-5 leaf stage of millet seedlings for thinning and weeding, and when the millet seedlings are 35 cm-40 cm, urea or compound fertilizer is dressed by 8 kg / mu-10 kg / mu in combination with intertillage; S2, in the middle ten days of August, the dicranostigma leptopodum seeds are scattered into a grain field, and the seed scattering amount is 1.5 kg / mu-2.0 kg / mu; S3, the millet is harvested at the end of September; S4, in the next year, in March, the dicranostigma leptopodum emerges, topdressing is conducted while rain or watering is conducted in late March, 3 kg / mu-5 kg / mu of urea or compound fertilizer is applied in a spreading mode, seeds and plants of the dicranostigma leptopodum are harvested from the end of May to the beginning of June, and the plants are air-dried or processed to be used as medicine; and S5, the millet is sown again in the middle ten days of June; and crop rotation planting is conducted on the two crops according to the steps. By means of the method, the millet yield and the benefit of yield per mu can be increased, and the problem that dry land is exposed is solved.