45results about How to "Reduce organic matter" patented technology

The invention discloses a treatment method of a concentrated solution produced from landfill leachate by a membrane method. The treatment method comprises the following steps of enabling the concentrated solution produced from the landfill leachate by the membrane method to sequentially pass through a composite softening coagulation and sedimentation pond, an ozone oxidation reactor, a hydrolyzing pond and an anaerobic MBR pond, and enabling effluent water from the anaerobic MBR pond to enter a nanofiltratoin system; enabling a permeation solution obtained through treatment of the effluent water in the nanofiltratoin system to be treated by a pressure contact oxidation reactor, and directly discharging the treated permeation solution, or after filtering the treated permeation solution by a multi-medium filter, discharging the filtered permeation solution; mixing a concentrated solution obtained after treatment by the nanofiltratoin system with the landfill leachate so as to obtain a mixed solution; and performing concentration treatment on the mixed solution by a biochemical method, an MBR method and the membrane method so as to obtain a concentrated solution, enabling the concentrated solution to enter the composite softening coagulation and sedimentation pond, and performing subsequent operations. The treatment method disclosed by the invention not only is suitable for treatment of the concentrated solution produced from the landfill leachate by membrane filtration, but also is suitable for treatment of other membrane concentrated solutions containing high concentration of organic compounds which are difficult to degrade.

The invention discloses a method for biologically treating industrial circulating water and stabilizing the quality thereof. The method is characterized by comprising a, separately breeding bacterial strains; b, performing acclimatization for the bacterial strains; c, culturing and preparing the bacteria; d, culturing the bacteria in an industrial expanding manner to produce medicinal products; and e, directly adding the produced medicinal products into a circulating water pond. The method has the advantages that the quality of the industrial circulating cooling water is stabilized by the aid of the biotechnology and method, in a circulating water system, currently preferred chemical corrosion and scale inhibitors, bactericides and other chemical agents are replaced by microbial agents; and the microbial agents are produced by a special process, and aerobic bacteria, anaerobic bacteria and facultative anaerobic bacteria which have biological reaction functions are optimized, are subjected to acclimatization and then are cultured in an industrial expanding manner to obtain the microbial agents (medicament or microbiological products in short).

The invention discloses a micro-polluted water ecological purification system suitable for a river water source. The micro-polluted water ecological purification system is formed by connecting a waterinlet channel, an ecological water storage pond, a surface flow constructed wetland, a horizontal underflow constructed wetland and an ecological oxidation pond in series, wherein the water outlet ofthe water inlet channel is provided with a drop weir communicated with the ecological water storage pond, the water outlet of the ecological water storage pond is provided with a water distribution channel communicated with the surface flow constructed wetland, the ecological water storage pond is communicated with the water distribution channel through a water collection pipe, the surface flow constructed wetland is communicated with the horizontal subsurface flow constructed wetland through a water collection pipe, a tumbling dam is arranged at the outlet of the horizontal subsurface flow constructed wetland and is communicated with the ecological oxidation pond, a carbon source adding area is arranged in the horizontal subsurface flow constructed wetland, and the water outlet of the ecological oxidation pond is communicated with a water supply plant. A biological purification technology is adopted, and a continuous aerobic-anaerobic process is set according to the pollutant conversion rule, so the system has a good purification effect on water, and also has good landscape values and good economic benefits.

The invention discloses a mixed culturing and rotation method of procambrus clarkii, fishes and water cresses, comprising the following steps of: (1) stocking the young procambrus clarkii in the first ten-day period of March and stocking chubs, variegated carps and crucian carps in the middle ten days of March; (2) feeding 5-8% of feed to the procambrus clarkii in every day based on the total weight of the procambrus clarkii; (3) taking out all the aquatic products from the pond at the end of April and pumping the water in the pond; (4) removing the excessive sludge, keeping the sludge at the thickness about 0.3m, and flattening the bottom of the pond and digging a water discharge trench; (5) spreading seed stems of the water cresses with the length around 3cm into the pond and transplanting when the water cresses are more than 20 cm. In the method in the invention, the characteristics that the water cresses have strong fertilizer absorbing capability to reduce organic matters in the pond are used on one hand, and the characteristics that the aquatic organisms are rich after the water cresses are harvested are used on the other hand, and the residual leaves of the water cresses are the natural baits for the procambrus clarkii and fishes so as to reduce the feed amount, decrease the production cost and have obvious yield increasing effect and synergy.

The invention relates to a water treatment coagulant aid and a preparation method thereof. When the raw water has special water quality of low temperature, low turbidity, low alkalinity and the like, the floccus forming speed and the floccus settling velocity are reduced along with reduction of water temperature; and the probability of particle impact is reduced in the water treatment flocculation process due to the reduction of the turbidity of the raw water so as to affect flocculation; therefore, the treatment of the water with low temperature, low turbidity and low alkalinity is a problem in water treatment. The invention provides the water treatment coagulant aid, which comprises the following raw materials in percentage by mass: 75 to 85 percent of alkali sodium silicate, 7 to 12 percent of potassium permanganate, 7 to 12 percent of potassium monopersulfate and 0.5 to 1 percent of citric acid, wherein the raw materials are prepared according to the proportion, and then the molten raw materials are mixed and stirred uniformly to form uniform transparent liquid. The water treatment coagulant aid has remarkable treatment effect on the raw water with low temperature, low turbidity and low alkalinity, can improve the effect of a coagulant, reduce the consumption of the coagulant, reduce the water treatment cost and effectively reduce the content of organic substances and the like in the water, has the function of removing color and smell, is easy to add, and does not need special equipment.

The present invention discloses a composite aquaculture oxygen increasing water purification agent, which comprises the following raw materials by weight: 13-17 parts of an oxygen-increasing agent, 2-6 parts of a pH value adjusting agent, 3-5 parts of active carbon, 10-18 parts of attapulgite, 20-30 parts of an ore additive, 7-9 parts of sodium carboxymethyl cellulose, 6-8 parts of chitosan, 2-4 parts of L-ascorbic acid, 2-5 parts of a curing agent, and 0.5-1.5 parts of a stabilizer. According to the present invention, the composite aquaculture oxygen increasing water purification agent has advantages of low use amount, strong flocculation adsorption capacity, effective elimination of the rancidity of residual bait in the pond, breeding pond pH value adjusting, effective dissolved oxygen increasing, water quality improving, absorption and reduction of organic matters in the water body, non-toxic raw material, easily available materials, low production cost and simple process, and has high practical value and good application prospect in the application as the aquaculture oxygen increasing water purification agent.

The present invention discloses a method for controlling bacterial diseases by co-culturing Siganus ConcatenaluJ and Penaeus japonicus. The method comprises the following steps: putting young shrimps of Penaeus japonicus with a full length of 0.8-1.0 cm, wherein the putting density is 70,000-80,000 shrimps/mu; and when the lengths of the Penaeus japonicus are 2-3 cm, putting Siganus ConcatenaluJ with the length of 2-3 cm, wherein the putting amount is 500-600 fish/mu. According to the method for controlling bacterial diseases by co-culturing Siganus ConcatenaluJ and Penaeus japonicus, the Penaeus japonicus with herbivorous property can eat baits, faeces, plankton and Enteromorpha, so that the contamination of the water of a pond and the bottom of the pond is reduced, the environment of the aquaculture pond is improved, the content of harmful bacteria in the pool water and sludge is lowered, and the occurrence and spread of bacterial diseases in culturing of the Penaeus japonicus are controlled. By co-culturing the Siganus ConcatenaluJ and the Penaeus japonicus, the excessive nutrition on the bottom of the pond and in the water of the pond can be eliminated timely, the bacteria number is reduced, the breakout of the bacterial diseases is prevented and the culturing success rate is improved.

The invention discloses a special water purifying agent for chloroprene rubber production and a wastewater treatment method. A mixture which comprises caustic alkali, poly dimethyl diallyl ammonium chloride, polyethylene imine, bentonite, polyoxy succinic acid, sericite powder, carboxyl acetic acid, water-soluble sodium humate, tetraphenaylporphyrin iron and cottonseed hulls is used as the water purifying agent, and a flocculant which comprises the components of borax, polyacrylamide, lignin, chitosan and kaolin is matched, and processes of deep oxidation, flocculation, ultrasound, resin adsorption, filtration, sterilization, membrane separation and the like are assisted to effectively lower the contents of organic matters and salt in sewage and the COD value, and meet requirements of the industry, so that the special water purifying agent for the chloroprene rubber production and the wastewater treatment method have very good application prospects.

The invention discloses a preparation method and application of a slow-release material for treating water pollution, and the preparation method comprises the following steps: adding chitosan into water of which the pH is adjusted to 4-5 by acetic acid, and stirring the mixture until the chitosan is completely dissolved; rapidly adding a sodium carbonate solution into the chitosan by 40-60 mL of the sodium carbonate solution to each gram of chitosan, and fully stirring the mixture to obtain a chitosan solution; adding a functional microbial agent for embedding; adjusting the pH value of the solution to 6.5-7.5 by using acetic acid, separating out precipitates, and fully stirring and standing the precipitate, and filtering and drying the mixture to obtain the slow-release material. The slow-release material embedding microbial inoculum is used for treating sewage, and can achieve the effects of purifying water for a long time, effectively reducing the contents of organic matters and ammonia nitrogen in water, accelerating nitrite decomposition, flocculating suspended matters in water, increasing dissolved oxygen in water and the like.

The invention relates to a centrifugal mother liquor recovery treatment process for synthesizing beta-lactam antibiotics by an enzymic method. The method comprises the following steps: separating beta-lactam antibiotic centrifugal mother liquor synthesized by an enzymic method by sequentially using rough filtration, ultrafiltration and electrodialysis methods to obtain a part of beta-lactam antibiotic-rich product and beta-lactam antibiotic mother nucleus, and directly applying the beta-lactam antibiotic-rich product and the beta-lactam antibiotic mother nucleus to an enzymic method synthesisprocess; and the other part contains more side chains and salts and can be hydrolyzed by an enzyme method or separated and extracted by a chemical method. The process has the beneficial effects that according to the centrifugal mother liquor recycling treatment process for synthesizing the beta-lactam antibiotics by the enzymic method, the cost for synthesizing the beta-lactam antibiotics is greatly reduced, the yield, salt and organic matter components of wastewater are remarkably reduced in the treatment process, and the centrifugal mother liquor recycling treatment process is a greener andmore environment-friendly treatment process and has a wide application prospect.

The invention belongs to the technical field of waste gas treatment, and discloses a treatment method of ammonia-containing waste gas. The treatment method comprises the following steps: mixing activated sludge containing anaerobic ammonium oxidation bacteria with a culture solution, and fermenting to obtain an inoculation culture medium; and introducing ammonia-containing waste gas, air and an inert gas into the inoculation culture medium, and reacting, wherein the flow ratio of the ammonia-containing waste gas to the air to the inert gas is (2-4: 1-5: 3-10). According to the treatment method, the ammonia-containing waste gas can be effectively treated, the contents of ammonia nitrogen, total nitrogen and organic matters in the wastewater can be reduced, the corrosion to equipment duringammonia-containing waste gas treatment is reduced, and the ammonia-containing malodorous gas is effectively treated. The ammonia nitrogen removal rate is greater than 96%, the nitrite removal rate isgreater than 97%, and the total nitrogen removal rate is greater than 98%. According to the treatment method, the use amount of the treatment agent can be reduced, energy consumption is reduced, and secondary pollution is avoided; and the method is simple and suitable for popularization and application.

The invention discloses biomass charcoal particles loaded with matrine-chitosan sustained-release microspheres and a preparation method thereof. The preparation method is characterized in that adopting ultrasonic extraction and microwave extraction combined technology and chloroform extraction to extract and separate matrine; performing glutaraldehyde and chitosan in-situ crosslinking on the surface of matrine to obtain matrine coated chitosan sustained-release microspheres; loading the chitosan sustained-release microspheres on the surfaces of biomass charcoal particles through action between maleic anhydride and the chitosan sustained-release microspheres and hydroxyl on the surfaces of the biomass charcoal particles to obtain the biomass charcoal particles loaded with the matrine-chitosan sustained-release microspheres. The biomass charcoal particles loaded with the matrine-chitosan sustained-release microspheres have broad-spectrum insecticidal property, can improve soil structure, increase soil organic matter and adjust soil microenvironment, and can serve as a high-quality energy source and a soil improver to be applied in the aspects of water source purification and soil improvement.

The invention relates to a method for treating comprehensive wastewater of hazardous waste disposal center. A regulating tank, a reducing tank, a neutralization tank, a sedimentation tank, a hydrolysis acidification tank, a contact oxidation tank, a coagulation sedimentation tank, an activated carbon filter and a clear water tank are sequentially connected by means of pipelines, and each connecting pipeline is provided with a valve. The reducing tank, the neutralization tank, the coagulation sedimentation tank and the clear water tank are separately provided with a chemical feeding box; the bottom of the sedimentation tank is communicated with a sludge discharge pipeline, and the separated sludge is discharged outside through the sludge discharge pipeline; the coagulation sedimentation tank is internally and separately provided with a mixing paddle type mixer, a flocculation frame type mixer and a sloping plate type sedimentation plate for mixing, flocculating and precipitating the wastewater in the coagulation sedimentation tank; the sediment is shoveled by means of a mud scraper or a mud bucket, and is discharged out from the coagulation sedimentation tank at the fixed period bymeans of a mud discharge pump; a contact oxidation tank is internally provided with an aeration system. All the indexes of the treated comprehensive wastewater can meet the standard limit requirementsof Urban Wastewater Reuse and Urban Miscellaneous Water Quality.

The invention provides a pig manure sewage treatment device and relates to the technical field of sewage treatment. The pig manure sewage treatment device is mainly used for treating a lot of pig manure sewage which is continuously produced, and comprises a collection anaerobic tank, a primary filtering anaerobic tank, a secondary filtering anaerobic tank, an aerobic tank, a primary sedimentationtank and a secondary sedimentation tank, which are arranged in sequence; a dry and wet separator is arranged between the collection anaerobic tank and the primary filtering anaerobic tank; an aerationdevice is arranged in the aerobic tank. The invention further provides a pig manure sewage treatment method; the pig manure sewage treatment method comprises the following steps: (1) culturing decomposing bacteria; (2) collecting the pig manure sewage and carrying out primary anaerobic treatment; (3) filtering and precipitating and carrying out anaerobic treatment; (4) carrying out aerobic treatment; (5) carrying out precipitation and anaerobic treatment again; (6) carrying out disinfection and sterilization treatment. The sewage treatment device provided by the invention has the advantages of simple structure, low production cost, capability of being continuously operated, high treatment efficiency and great sewage treatment amount. The sewage treatment method provided by the invention adopts a method combining physical precipitation and filtering, and biodegradation to treat the sewage, and is green and environmentally friendly.

The invention discloses a septic tank and sewage treatment method using pretreatment and biological contact in the technical field of treatment of domestic sewage. The septic tank which adopts pretreatment and biological contact includes a pretreatment aeration pool, a pretreatment sedimentation pool, an anaerobic fermentation pool, a biological contact oxidation pool, a secondary sedimentation pool and a blower, wherein a water inlet pipe is arranged on the pretreatment aeration pool, a first overflow plate is arranged between the pretreatment sedimentation pool and the pretreatment aerationpool, and the anaerobic fermentation pool is a sealed cavity. Sewage is pretreated under the condition of aeration firstly, organic matter and suspended matter in the sewage are adsorbed by sludge, and therefore the obtained sewage has a low carbon-nitrogen ratio; sedimentation of the sludge is performed in the pretreatment sedimentation pool, only the liquid is discharged, and solid matter whichcarries parasite eggs is left, so that anaerobic sterilization and egg killing are achieved; denitrification and phosphorus removal are performed, so that organic matter is reduced, and the sewage ispurified effectively; finally resting sedimentation is performed so that excessive SS which is caused by biofilm falling off and aeration agitation can be avoided; therefore, the method has a good treatment effect on organic matter, nitrogen, phosphorus and other matter.

The invention provides a method and system for modifying treatment of high-viscosity sea mud. The viscosity of the sea mud can be reduced through three times of dispersion, ultra-long-distance landfill of a solidified substance is further performed through a pumping device, and the method and system are suitable for construction of large-scale sea mud solidification projects; the sea mud is converted through addition of a curing agent into the solidified substance which is similar to soil and has high cementing strength and no secondary environmental pollution, so that harmless treatment of the sea mud is achieved; the sea mud is highly dispersed into a dispersion with low-viscosity or good rheological properties through addition of a conditioning agent, and meanwhile since an adsorption electric double layer can be formed uniformly on the surface of the material through a dispersant, the tendency of secondary flocculation and agglomeration of sea mud particles is reduced greatly, so that the stability of the dispersion is improved, and the pumping capacity of the solidified sea mud is also improved at the same time; and according to the system for modifying treatment of the high-viscosity sea mud, transportation is carried out through containers, the system has continuous operation, high efficiency and adaptability to on-site treatment, and harm to the environment can be avoided.

An agent delivery device is mounted in an excavator, and can be used in match with mechanical equipment provided with hydraulic systems. An agent hopper used for storing an agent is arranged above a cover plate of a distributor of a hydraulic excavator. A spiral conveyor shell penetrates and is connected to the lower part of the agent hopper. A medium mixing container formed by separating the spiral conveyor shell with a valve plate is outside the shell of the agent hopper. An agent and sludge are uniformly mixed, thus achieving an objective of implanting the agent to bottom mud, promoting andactivating dominant microbes of a riverway to allow continuous mass propagation of the dominant microbes, and effectively reducing organic maters, total phosphorus, total nitrogen, COD, and other indexes of black and odorous bottom mud, and therefore, black and odorous phenomena of a water body are eliminated and a riverway self-cleaning capacity is recovered. Compared with traditional outward riverway sludge transportation, the device greatly saves the engineering cost, is convenient and rapid for sludge treatment, allows a black and odorous riverway to become clear, and is of great significance for environment protection.

The invention relates to a preparation method of a high-conductivity alloy catalytic electrode and a prepared electrode, and the preparation method comprises the following steps: treating a titanium-based material or other valve-type metal by adopting a conductive substrate pretreatment method, washing the titanium-based material or other valve-type metal with deionized water, performing ultrasonic treatment, and performing airing for later use; carrying out nano electro-deposition on the prepared conductive base material, and then conducting cleaning and airing for later use; using the obtained conductive base layer to prepare a conductive middle layer, wherein rare earth elements are doped in the conductive middle layer; and continuously manufacturing a catalyst layer on the obtained conductive middle layer, and conducting roasting for multiple times to obtain the alloy electrode with high conductivity, stability and catalytic activity. In the manufacturing process, base material electric conduction treatment is adopted, the base layer is made into a metal material with good electric conduction and thermal stress by adopting a nano electro-deposition technology, and the catalytic layer is made into a compact alloy material with a long life cycle by adopting a thermal decomposition method; and in addition, a multi-layer composite sintering and electro-deposition method is adopted, so that the base material forms a semiconductor oxide such as TiO2 and loses efficacy.

The invention discloses a lake and reservoir water body cyclic purification and utilization system and a cyclic purification method thereof. The system comprises a lake and reservoir water body, a lake and reservoir water outlet pump station, a bypass channel, a rubber dam, a water diversion channel, an immobilized filler caisson pretreatment unit, an underground channel, a water lifting pump station, an ecological gravel bed purification unit, an artificial wetland purification unit, a water collecting tank, a lake and reservoir water inlet pump station and a solar/wind energy water quality monitoring system. The water quality purification capacity is high, the problem that eutrophication is prone to occurring in the lake and reservoir area is solved, the water quality purification capacity is good, the ecological environment of the lake and reservoir area is remarkably improved, cyclic utilization of water can be promoted, and good ecological landscape performance is achieved.

The invention belongs to the technical field of vitamin production, and particularly discloses a production method of vitamin B6. The production method comprises the following steps: distilling and purifying an ester-acyl compound crude product obtained by ester acylation reaction to obtain an ester-acyl compound pure product and a distillation residue containing a byproduct 2, 2 '-oxadiamido ethyl dipropionate; then, hydrolyzing the distillation residues containing the by-product ethyl 2, 2 '-oxadiamido dipropionate; carrying out an ester acylation reaction on the obtained hydrolysate to prepare an ester-acyl compound, and purifying the reaction product to obtain a pure ester-acyl compound product; and using the obtained pure ester acyl for cyclization reaction. The invention provides the production method of vitamin B6, which is characterized in that a byproduct 2, 2 '-oxadiamido ethyl dipropionate is separated and utilized, so that the yield of an ester acylation reaction step is improved, and the problem that black tar substances are generated in the production process is solved.

The invention provides a resource utilization method based on plant fibrous agricultural wastes, and relates to the technical field of agricultural waste treatment. The invention discloses a resource utilization method based on plant fibrous agricultural wastes. The resource utilization method comprises the following steps: cutting the plant fibrous agricultural wastes into sections for later use; and uniformly mixing the stored sludge with the plant fibrous agricultural wastes, adding the mixture into a biological drying reactor, and carrying out biological drying treatment in an intermittent aeration and ventilation manner. Sludge stored for a long time is large in viscosity and low in C/N, compared with fresh sludge, the content of organic matter and aerobic microorganisms is lower, the content of anaerobic microorganisms is high, and the content of C/N and porosity of plant fiber agricultural waste are high. The method not only can realize resource utilization of plant fibrous agricultural wastes, but also can solve a series of problems caused by sludge storage, and is of great significance to beautiful rural construction and ecological civilization construction.