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37results about How to "Realize denitrification" patented technology

Sewage treatment method using active sludge-biological filtering pond revere flow and integral device

A method and apparatus for treating sewage features that its bioreacting apparatus uses active sludge-biologic filter pool internal reflux, and the aeration and the non-aeration are flexibly applied to the active sludge segment and biologic filter pool segment for optimizing the treating effect.
Owner:CHONGQING UNIV

Waste water denitrogenation and marsh gas desulfurization coupling technique

The invention relates to a technology for coupling wastewater denitrification and biogas desulphurization, which is characterized in that: wastewater or pretreated wastewater flow into an anaerobic digestion unit; organic matter in the wastewater is transformed to biogas, and organic sulfur and sulfate are transformed to hydrogen sulfide, and organic nitrogen is transformed to ammoniacal nitrogen by the anaerobic digestion unit. The effluent of the precipitated anaerobic digestion unit flows into a digestion liquid aerobic processing unit; residual organic matter is degraded and the ammoniacal nitrogen is transformed to nitrate nitrogen or nitrite nitrogen by the digestion liquid aerobic processing unit. A denitrification and desulphurization unit adopts a tower reactor; the effluent of the precipitated aerobic processing unit flows into the reactor from the top of the tower reactor and the biogas generated by the anaerobic digestion unit flows into the reactor from the bottom of the tower reactor. The nitrate nitrogen or the nitrite nitrogen is transformed to nitrogen and the hydrogen sulfide is transformed to elemental sulfur or the sulfate by the tower reactor. The technology for coupling wastewater denitrification and biogas desulphurization has the advantages that: the nitrogen in the wastewater and the sulfur in the biogas are removed at the same time; no extra carbon source is needed in the denitrification of the anaerobic digestion liquid; no other catalyst and oxidizer are needed in the biogas desulfurization; little biological mud is generated and the operation cost is low.
Owner:BIOGAS SCI RES INST MIN OF AGRI

Integrated carbon and nitrogen removal bioreactor

An integrated carbon and nitrogen removal bioreactor comprises a reactor body, a pedestal, a support arranged in the periphery of the reactor body, a main water inlet tube, and a main water outlet tube connected with an outside water source, the inner chamber of the reactor body is divided into a first chamber and a second chamber which are independent through a vertical separator plate, and the first chamber is connected with the second chamber through a second water inlet tube; the first chamber is an anaerobic digestion unit used for filling anaerobic granular sludge; the second chamber is sequentially divided into a water inlet area provided with an aeration device, a short-cut nitrification unit used for filling a lightweight biological carrier, an anaerobic ammoxidation unit used for filling a suspension filler, and a water outlet area from top to bottom; the bottom of the anaerobic ammoxidation unit is provided with a second mud discharge port provided with a control valve; and the water outlet area is provided with a water outlet connected with the main water outlet tube. The integrated carbon and nitrogen removal bioreactor has the advantages of full recovery and utilization of energy contained in organic matters in wastewater, low nitrogen removal cost, and realization of comprehensive productivity in the wastewater treatment process.
Owner:HANGZHOU NORMAL UNIVERSITY

Method for carrying out in-situ remediation on underground water nitrate pollution by adopting iron fuel cell

The invention discloses a method for carrying out in-situ remediation on underground water nitrate pollution by adopting an iron fuel cell. The method is characterized in that a double-chamber iron fuel cell is constructed, wherein an anode is arranged in an anode chamber filled with a pH buffer solution, an underground water-containing layer polluted by nitrate in an anaerobic environment is used as a cathode chamber, and a cathode is arranged in the cathode chamber; the anode and the cathode are connected by a lead, and a connecting resistor is connected in the lead in series; and both ends of a salt bridge are respectively soaked in the solutions of the anode chamber and the cathode chamber. The method has the advantages of simple structure, no organic carbon source, microbial strain or any other chemical substance needs to be added into the underground water, operation and maintenance are convenient, the method is quick to start, the nitrate degradation speed is high, the pollution remediation period of the underground water is short, the construction investment and the running cost are low, and no secondary pollution is generated.
Owner:HEFEI UNIV OF TECH

Multilevel biological contact oxidation reactor sewage treatment device

The invention relates to a sewage treatment device, and particularly to a multilevel biological contact oxidation reactor sewage treatment device. The device comprises at least two biological contact oxidation tanks and one sedimentation clarification tank which are in series connection via connecting pipelines. Each biological contact oxidation tank is formed by a cylindrical outer tank body and a frusto-conical inner tank body. The inner and outer tank bodies communicate with each other via an annular diversion gap. A floating imitation aquatic plant biological filler system and an aeration system composed of an aeration machine, main air pipes and an aeration pipe are arranged inside each inner tank body. The sedimentation clarification tank comprises a sedimentation clarification tank body, the lower part of which is a mud collection part in an inverted frusto-conical shape; a vertical flow pipe is arranged at the axial center of the sedimentation clarification tank body; and a submersible sewage pump for mud removal is placed in the mud collection part and connected to a mud outlet pipe. The aeration machine and the submersible sewage pump are connected to an automatic control system. The device provided by the invention is high in processing efficiency, low in energy consumption, convenient for manufacturing and installation, and easy for use and maintenance.
Owner:中化学朗正环保科技有限公司

Land-saving type efficient nitrogen and phosphorus removal sewage treatment device and method

The invention discloses a land-saving type efficient nitrogen and phosphorus removal sewage treatment device and method. The land-saving type efficient nitrogen and phosphorus removal sewage treatmentdevice comprises a pretreatment unit; the left end of the pretreatment unit is provided with a water inlet; the right end of the pretreatment unit is communicated with the left end of an anaerobic pool; the right end of the anaerobic pool is communicated with the left end of a first-stage aerobic pool; the right end of the first-stage aerobic pool is communicated with the left end of a secondarysedimentation pool; the right end of the secondary sedimentation pool is communicated with the left end of an anoxic pool; the right end of the anoxic pool is communicated with the left end of a secondary-stage aerobic pool; the right end of the secondary-stage aerobic pool is communicated with the left end of a deep treatment unit; the right end of the deep treatment unit is provided with a wateroutlet; and the anoxic pool and the secondary-stage aerobic pool are both filled with a biological membrane filler. The traditional A / A / O technology is improved into combination of front section A / Oadopting an activated sludge method and post A / O adopting a pure biological membrane method; and compared with the activated sludge method and a sludge-membrane mixing technology in the past, the combination greatly saves the occupying area while strengthening the pollutant effect.
Owner:四川天润德环境工程有限公司 +1

Acid-resistant alkali-resistant rapid-denitrification aerobic denitrifying bacterium, microbial inoculum and application of aerobic denitrifying bacterium and microbial inoculum

ActiveCN114381402AGood water organic carbon removal abilityWastewater treatment process is simpleWater treatment parameter controlBacteriaLaboratory cultureEnvironmental chemistry
The invention belongs to the technical field of microbial denitrification, and discloses an acid-resistant and alkali-resistant aerobic denitrifying bacterium capable of rapidly denitrifying, a microbial agent and application thereof, the aerobic denitrifying bacterium is a Pseudomonas plecoglossa strain ZY-3, is preserved in Guangdong Microbiological Culture Collection Center (GDMCC) on January 4, 2022, and has a preservation number of GDMCC No: 62181; the strain and the inoculant have the heterotrophic nitrification and aerobic denitrification capabilities at the same time, the growth speed is high, the nitrogen reduction rate is high, and the strain and the inoculant can be respectively utilized and used as a unique inorganic nitrogen source for aerobic nitrification and denitrification nitrogen removal. The strain and the microbial inoculum can play a nitrification-denitrification role in a water body environment with the pH value of 5.5-10.5, and meanwhile, the strain and the microbial inoculum have good biological safety.
Owner:GUANGZHOU UNIVERSITY

Non-aeration baffled synchronous nitrifying and denitrifying type wastewater treatment system and treatment method

The invention relates to a non-aeration baffled synchronous nitrifying and denitrifying type wastewater treatment system and a treatment method. The wastewater treatment system comprises a vertical box body, wherein a liquid inlet hole and a liquid outlet hole are respectively formed in the upper end and lower end of the vertical box body; a filler bracket is arranged in the vertical box body, anda baffled water flow passage is formed in the vertical box body from top to bottom; a porous filler is paved at the surface of the filler bracket, a micro-biological membrane is attached to the surface of the porous filler, and the micro-biological membrane consists of an outer nitrifying bacterial micro-biological membrane and an inner denitrifying bacterial micro-biological membrane. The wastewater treatment system has the advantage that the nitrifying reaction and the denitrifying reaction are integrated into one treatment system, and the wastewater permeates into the porous filler under the mutual action of gravity and capillary structure of the porous filler, is in contact with the outer nitrifying bacterial micro-biological membrane to convert the ammonia-nitrogen in the wastewaterinto nitrate and nitrite under the aerobic environment, and then is in contact with the inner denitrifying bacterial micro-biological membrane to convert the nitrate and nitrite in the wastewater intonitrogen gas under the anaerobic environment, and the nitrogen gas escapes from water, so as to reach the nitrogen removal effect of the wastewater.
Owner:NORTHEASTERN UNIV LIAONING

Method for achieving sewage treatment continuous short-term nitrification and denitrification through sludge fermentation products

InactiveCN107188308ARealize denitrificationBreak through the bottleneck of difficult realizationTreatment with aerobic and anaerobic processesRaw waterChemistry
The invention discloses a method for achieving sewage treatment continuous short-term nitrification and denitrification through sludge fermentation products, and belongs to the field of sewage treatment. The apparatus of the present invention mainly comprises a sewage raw water tank, a sludge fermentation product storage tank, a sewage treatment continuous stream reactor and a precipitation pool, wherein the sewage treatment continuous stream reactor comprises all forms of continuous stream reactors in the sewage treatment, wherein mainly the NOB activity is inhibited through the sludge fermentation product, such that the aerobic section in the continuous stream is subjected to the short-term nitrification reaction. According to the present invention, the method is simple and feasible, can solve the problem of difficult achievement of the continuous stream short-term nitrification, can provide the nitrite nitrogen for the denitrification and anaerobic ammonium oxidation, and further can achieve the purposes of energy saving and consumption reducing.
Owner:BEIJING UNIV OF TECH

Improved up-flow composite anoxic tank

The invention discloses an improved up-flow composite anoxic tank. The improved up-flow composite anoxic tank comprises an anoxic tank and a reaction tank arranged outside the anoxic tank, anaerobic tank is mounted at one side of the anoxic tank, the anoxic tank is juxtaposed with the aerobic tank in the reaction tank, a water outlet is arranged in a position, close to the aerobic tank, of the upper end of one sidewall of the anoxic tank, and a regulating tank is arranged at the left side of the aerobic tank. A Venturi tube is arranged to replace a submersible mixer in a traditional anoxic tank to achieve the stirring function, so the investment, operation and maintenance of the submersible mixer in the traditional anoxic tank are saved, and the cost is greatly reduced; a mixed solution can well contact with denitrifying bacteria in the up-flow process to make the denitrifying bacteria play a role in denitrification in order to achieve nitrogen removal; short-flowing of wastewater canbe effectively prevented to ensure the high efficiency of an anoxic reaction; a nitrifying solution can be recovered and reused, so resources are saved; and denitrifying bacteria micelles can be retained to prevent the loss of denitrifying bacteria micelles.
Owner:HUNAN ZHONGTUO ENVIRONMENTAL ENG CO LTD

Sewage treatment device

The invention relates to a sewage treatment device which comprises a plurality of packing cups and packing, and the packing cups are sequentially stacked in the vertical direction. The packing is arranged in the packing cups and is used for the growth of biofilms. The packing cups can be rotationally switched between a first position and a second position. When each packing cup is positioned at the first position, the inclination angle of each packing cup is a first angle, the sewage can flow through the plurality of packing cups in sequence from top to bottom by virtue of gravity, and can bein full contact with the biofilms grown on the corresponding packing in the process of flowing through the packing cups and form water films on the surfaces of the biofilms, so that the biofilms grownon the packing in the plurality of packing cups perform biochemical treatment on the sewage in sequence; and when each packing cup is located at the second position, the inclination angle of each packing cup is a second angle, and the second angle is larger than the first angle, so that aged biofilms and dirt attached to the packing in the packing cups are separated from the packing by virtue ofgravity and are discharged from the corresponding packing cups.
Owner:SHENZHEN UNIVERSILICON ENVIRONMENTAL SCI & TECH CO LTD

Electro-coupling biological carbon removal and denitrification treatment method of low C/N ratio wastewater

The invention relates to an electro-coupling biological carbon removal and denitrification treatment method of low C / N ratio wastewater, aiming at solving the technical problems that in an upgrading and reconstruction process of low C / N ratio lightly-polluted wastewater carbon removal and denitrification, a treatment process needs to be added, an external carbon source is artificially added, and the operation effect stability is poor. A wastewater treatment system adopted by the method comprises a water inlet pump, a reactor and an outlet sump, wherein the reactor comprises a reaction tank, apositive electrode plate, a negative electrode plate, an aeration device and bio-filler; a wastewater inlet and a wastewater outlet are respectively formed at two ends of the reaction tank; the bottomof the reaction tank is inoculated with a heterotrophic nitrification-aerobic denitrification enrichment bacteria solution and aerobic sludge; the positive electrode plate and the negative electrodeplate are fixed in the reaction tank. Furthermore, the electro-coupling biological system is capable of providing matrix H2 and can enhance the microbial activity. Therefore, a carbon source requiredfor nitrogen removal by denitrification of the system microorganism is reduced, so that the effluent water quality can reach a class A emission standard or even a stricter local standard when the C / Nratio is only 2-5.
Owner:QUZHOU UNIV

Activated sludge process and biofilm process combined wastewater treatment device

The invention relates to an activated sludge process and biofilm process combined wastewater treatment device. The device comprises a treatment tank, a partition plate is fixed in the treatment tank,a wastewater inlet pipe is connected to a water distribution cavity, and a gap is formed between a lower end of the partition plate and a bottom wall of the treatment tank. A microporous aerator is arranged at a bottom of the reaction cavity, the microporous aerator is connected with an aeration pipeline, a filler frame is arranged in the reaction cavity, a combined filler is suspended on the filler frame, a sedimentation tank is attached to one side of the treatment tank, an upper end of the reaction cavity is level with an upper end of the sedimentation tank to form an overflow port, an upper part of the sedimentation tank is provided with a water outlet, the water outlet is lower than the overflow port, a bottom of the sedimentation tank is provided with a sludge return pipeline, the sludge return pipeline is provided with a sludge pump and a return switch, and a bottom of the treatment tank is provided with a sludge outlet. The device is simple in structure and small in occupied area, the concentration of activated sludge can reach 5-6 g / l, the removal rate of COD, BOD and ammonia nitrogen is up to 90% or above, the total nitrogen removal efficiency is 60% or above, and the operation cost is low.
Owner:刘士军

Movable emergency treatment equipment and process for sewage

The invention discloses movable emergency treatment equipment for sewage. The equipment comprises a container and further comprises a flocculation tank, a sedimentation tank, a membrane tank, a nanofiltration system, a nanofiltration water tank, a break point chlorination tank, a clean water tank and an activated carbon filter tank which are located in the container and sequentially communicate with each Other, wherein lifting equipment and dosing equipment are arranged in front of the flocculation tank; a lifting pump I and a pipeline mixer are arranged between the nanofiltration water tank and the break point chlorination tank; an outlet of a sodium hypochlorite dosing system communicates with an inlet of the pipeline mixer; a plurality of ceramic membranes are arranged in the membrane tank; and a plurality of tubular nanofiltration membranes are arranged in the nanofiltration tank. The invention also discloses an emergency treatment process for sewage. The process adopts the movableemergency treatment equipment for sewage treatment. The device does not need to be assembled on site, can be quickly put into use, and is convenient to move, stable in water outlet index and suitablefor emergency treatment of sewage.
Owner:北京市高速公路交通工程有限公司

Sewage treatment device

The invention discloses a sewage treatment device, and belongs to the field of environmental treatment equipment. The sewage treatment device comprises a contact oxidation assembly, a precipitation and clarification assembly and an aeration assembly, wherein the contact oxidation assembly is communicated with the precipitation and clarification assembly; the aeration assembly can be driven to be embedded inside the contact oxidation assembly; the contact oxidation assembly comprises an inner reactor and an outer reactor which are arranged coaxially; the outer side of the inner reactor is annularly sleeved with the outer reactor. Through the outer reactor and the inner reactor which are sleeved coaxially and annularly, sewage can only reach the outer reactor through the inner reactor, so that spatial selective allocation of microorganisms at different growth stages with different functions is realized in a plug flow treatment way, the synergistic effect among microbial populations of the same type can be brought into full play, the synergistic effect among different microbial populations is overcome, and the treatment efficiency is improved remarkably.
Owner:湖南惟创环境科技有限公司

A wastewater treatment method for synchronous denitrification, phosphorus and ammonia nitrogen removal

ActiveCN107304075BIt has the function of synchronously removing ammonia nitrogenRealize denitrificationTreatment with anaerobic digestion processesPhosphate ionMagnesium ammonium phosphate
The invention discloses a waste water treatment method for removing ammonia and nitrogen by simultaneous phosphorus and nitrogen removal and belongs to the technical field of sewage treatment. The method comprises the following steps: uniformly mixing pyrrhotite with magnesite in a certain mass ratio and adding the mixture into a reaction container; then adding waste water containing ammonia and nitrogen, nitrate nitrogen and phosphate into the reaction container; then adding a sulfur-based autotrophic denitrifying bacteria culture solution into the reaction container in a certain volume; putting the reaction container in an anaerobic environment; and after reactions for many days, completing treatment of the wastewater. The pyrrhotite is taken as a sulfur source for the sulfur-based autotrophic denitrifying bacteria and magnesite is taken as a carbon source for autotrophic denitrification to remove nitrogen. The magnesite is utilized, so that magnesium ions are released and form a magnesium ammonium phosphate precipitate with ammonium ions and phosphate radicals; the pyrrhotite is utilized, so that ferrous ions and iron ions are released and form a precipitate with phosphate radicals, and therefore, phosphorus and ammonia and nitrogen are removed while biological removal of nitrogen is performed. The method is excellent in effect, low in cost and suitable for engineering application.
Owner:NANJING UNIV

Constructed wetland system and technology for preventing blockage and strengthening anaerobic ammonia oxidation denitrification

The invention discloses a constructed wetland system and technology for preventing blockage and strengthening anaerobic ammonia oxidation denitrification, and relates to the technical field of water environment treatment. Suspended matters capable of being settled are precipitated through the front pond, suspended matters difficult to settle are removed through the nano air flotation filter, suspended matters in a water body are removed through the bionic aquatic plant-plant wetland, SS, COD, ammonia nitrogen, total phosphorus and total nitrogen in the water body are removed in combination with addition of microorganisms, and then COD, ammonia nitrogen, total phosphorus and total nitrogen in the water body are removed through the subsurface wetland. Meanwhile, the water level of the subsurface flow wetland is controlled to perform high water level-low water level-high water level periodic operation, the land and water interlaced area is expanded, the anaerobic ammonia oxidation denitrification of the constructed wetland is enhanced, and finally, the polluted water is subjected to denitrification and dephosphorization again through surface flow humidity, so that the aims of gradually reducing the water inlet suspension content of the whole system and enhancing the denitrification and dephosphorization effects of the constructed wetland are fulfilled. The system obviously improves the effluent quality, prevents the constructed wetland from being blocked, prolongs the service life of the constructed wetland, and has a wide application prospect.
Owner:北京环域生态环保技术有限公司

Mariculture wastewater treatment system and treatment method thereof

The invention relates to the field of mariculture wastewater treatment and discloses a mariculture wastewater treatment system which comprises a water inlet area, a pollution reduction area and a water outlet area. Iron-carbon filler is added into the whole treatment system; the filler not only can be used as a micro electrode to improve the current density and conductivity, but also can be used as a carrier for attachment of microorganisms; meanwhile, iron in the iron-carbon filler accelerates reduction in the wastewater; Fe < 2 + > and Fe < 3 + > generated by the reaction react with complexation in the wastewater to form precipitates, so that dephosphorization is realized. That is, the physical, chemical and biological combined method is adopted, so that the wastewater treatment effect is improved; meanwhile, the hydrogen ions are generated on the surface of the cathode of the electrolysis device, a part of natural alkalinity in the mariculture wastewater can be neutralized, the alkalinity can be controlled within a proper range, and the operation cost is saved; in addition, the cathode of the electrolysis device reacts to generate HClO which has a certain effect of killing pathogenic bacteria, and the HClO oxidizes the nitrides in the wastewater to generate nitrogen, so that denitrification is realized.
Owner:NANJING UNIV OF INFORMATION SCI & TECH

Urea-containing printing and dyeing wastewater processing equipment and processing method thereof

The invention relates to urea-containing printing and dyeing wastewater processing equipment and its processing method. The equipment comprises a regulating tank, an oxidation reaction tank, a primary sedimentation tank, a hydrolysis acidification tank, an oxidation ditch and a secondary sedimentation tank. The regulating tank, the oxidation reaction tank, the primary sedimentation tank, the hydrolysis acidification tank, the oxidation ditch and the secondary sedimentation tank are successively connected to form integrated processing equipment. The urea-containing printing and dyeing wastewater processing equipment and its processing method combine advantages of coagulation, decoloration and nitrogen removal processing. After printing and dyeing mother liquor wastewater is treated by the processing method, ammonia nitrogen, chroma and COD can be effectively degraded. Processing can meet the requirement of discharging into a pipe network. The equipment and the method have low processing cost and are simple to operate and easy to control.
Owner:SHAOXING HEQIAO JIANGBIN WATER TREATMENT

Sewage sludge treatment device

The invention relates to a sewage sludge treatment device. The sewage sludge treatment device comprises a concentrating device (1), a first heat exchanger (2), a second heat exchanger (3), an anaerobic digestion reactor (4), an aerobic digestion reactor (5) and a sludge dewatering device (6) which communicate with one another sequentially, wherein a medium inlet of a heat exchange tube 2a in the first heat exchanger communicates with a returned sludge outlet (5a) of the aerobic digestion reactor, an outlet of the heat exchange tube (2a) communicates with a returned sludge inlet (5b) of the aerobic digestion reactor, and an inlet of a distributing pipe (5e) of a spraying member (5d) at the upper part of an internal cavity of the aerobic digestion reactor (5) communicates with the outlet of the heat exchange tube (2a) in the first heat exchanger or is connected with and communicates with the middle section of a third tube element (9). The sewage sludge treatment device has the characteristics that the efficiency of removal of volatile suspended solids from sewage sludge can be increased, meanwhile, ammonia nitrogen is reduced, and the energy consumption is lowered.
Owner:长沙奥邦环保实业有限公司

Compound denitrification agent

The invention provides a compound denitrification agent, and relates to the field of environmental protection. The compound denitrification agent comprises the following raw materials by weight: 10 to15 parts of modified zeolite powder, 5 to 9 parts of modified bentonite, 5 to 11 parts of a thiobacillus denitrificans liquid, 7 to 10 parts of a mycobacterium szulgai liquid, 5 to 10 parts of a nitrite reductase liquid, 10 to 13 parts of a carbon source liquid, 7 to 11 parts of ferric sulfate, 5 to 8 parts of ethanol and 4 to 10 parts of a fruit juice fermentation liquid. According to the invention, through combination of chemical agents and biological enzyme agents, denitrification purification of industrial wastewater is realized; meanwhile, through compound selection of a carbon source, the yield of sludge can be flexibly adjusted according to different user conditions.
Owner:天津市雍泉水务有限公司

Sewage treatment device

The present invention relates to a sewage treatment device, which comprises a plurality of filler discs and fillers. The filler discs are sequentially stacked in the vertical direction, and the fillerdiscs can accommodate sewage to be treated. The fillers are arranged in the filler discs and are used for the growth of biological films. Sewage can flow through the filler discs in sequence from topto bottom by virtue of gravity, and can be in full contact with the biological films grown on the corresponding fillers in the process of flowing through the filler discs and form water films on thesurfaces of the biological films, so that the biological films grown on the fillers in the filler discs carry out biochemical treatment on the sewage in sequence. The sewage treatment device has the advantages of simple structure, easiness in implementation and high biochemical treatment efficiency. Moreover, a user does not need to additionally arrange a large number of power mechanisms to injectsewage into all the filler discs, and energy consumption is effectively reduced.
Owner:深圳市慧创源环保科技有限公司

Sulfur-iron self-oxidation denitrification device and reaction control method

The invention discloses a sulfur-iron self-oxidation denitrification device and a reaction control method. The sulfur-iron self-oxidation denitrification device comprises an iron self-oxidation denitrification bin and a sulfur self-oxidation denitrification bin, a water inlet device is arranged in the iron self-oxidation denitrification bin, and the iron self-oxidation denitrification bin is communicated with the sulfur self-oxidation denitrification bin; a gas outlet pipe is arranged at the top of the sulfur self-oxidation denitrification bin; a gas concentration sensor, a gas flow sensor, a signal collector and a signal transmitter are arranged on the gas outlet pipe; a water outlet pipe is arranged at the middle lower part of the sulfur auto-oxidation denitrification bin; the signal transmitter transmits the gas data information to the control platform; and the invention further discloses the reaction control method. The nitration device disclosed by the invention is sufficient in reaction and good in reaction controllability.
Owner:臻和慧联(浙江)环境科技有限公司

Wastewater treatment system of enhanced membrane aeration biofilm reactor and application of system

The present invention belongs to the technical field of wastewater treatment, in particular to a wastewater treatment system of an enhanced membrane aeration biofilm reactor. The wastewater treatmentsystem comprises a main reactor box, a reactor base, a packing frame and an MBR membrane. The reactor base is fixedly arranged at the bottom of the main reactor box. The frame structure of the packingframe and the structure of the main reactor box are similar and the packing frame is fixedly arranged in the main reactor box. The reactor base is provided with an MBR membrane clamping slot, and theMBR membrane can be fixed and arranged in the inner space of the packing frame by means of the MBR membrane clamping slot. Soft fiber packing layers are hung on the packing frame on both sides of theMBR membrane. Biofilms are attached to the surfaces of the soft fiber packing layers. The wastewater treatment system can effectively improve the utilization rate of oxygen and save energy consumption.
Owner:NORTHEASTERN UNIV

Short-cut denitrification method to promote the removal of total nitrogen in wastewater

The invention discloses a method for short-range denitrification to promote the removal of total nitrogen in wastewater. High-ammonia nitrogen wastewater passes through a pretreatment unit to remove organic matter to produce biogas, and then enters a short-range nitrification-anammox denitrification unit to remove ammonia nitrogen and most of the total nitrogen. The effluent enters the sulfur reduction short-range denitrification unit, and feeds biogas to convert nitrate nitrogen into nitrite nitrogen. Part of the effluent from the sulfur reduction short-range denitrification unit flows back to the short-range nitrification-anammox denitrification unit to continue the anammox reaction The total nitrogen is further removed, and the remaining effluent enters the post-treatment unit for advanced treatment. The effluent of the post-treatment unit meets the discharge standard and is discharged. The advantages of the present invention are: high removal rate of total nitrogen in anaerobic digestion effluent, simultaneous denitrification of wastewater and biogas desulfurization, complete autotrophic denitrification, biogas desulfurization without oxygen addition, and operating costs of the entire wastewater denitrification and biogas desulfurization system Low.
Owner:BIOGAS SCI RES INST MIN OF AGRI

A membrane bioelectrochemical reactor device with high quality effluent and low membrane fouling

The invention relates to a membrane biological electrochemical reactor device with high-quality effluent and low membrane pollution, relates to the field of sewage treatment and is used for solving the problems of serious MBR (Membrane Bio-Reactor) membrane pollution, low nitrogen removal rate, poor treatment effect on sewage which is difficult to degrade and the like. The reactor device comprises a water box, a water-inflow peristaltic pump, an MFC (Microfunction Circuit) anode chamber, a stainless steel flat plate membrane, an MBR reactor, a conducting wire, an external resistor, an aeration head, an air flowmeter, an air compressor, a vacuum pressure gauge, a backflow peristaltic pump and an effluent peristaltic pump. As the reactor device is used, the sewage firstly enters the anaerobic MFC anode, and anaerobic electricity generating microorganisms perform hydrolytic acidification pretreatment; then the sewage enters the MBR, and the partial effluent are enabled to flow back into the anaerobic anode chamber, so that the denitrification of the sewage is further performed. Therefore, the energy source recovery and in-situ utilization of the electric energy performed by the MFC, the effective control of the membrane pollution and the efficient treatment of the sewage are realized. As a result, the reactor device is obvious in economic and environmental benefits. The reactor device provided by the invention is applied to the field of the sewage treatment.
Owner:HARBIN INST OF TECH

An anaerobic biological treatment equipment for domestic sewage

The present invention provides an anaerobic biological treatment device for domestic sewage, which comprises an algae reaction tank, and the algae reaction tank includes an input port, an algae cultivation compartment, an algae filter screen and an output port. The domestic sewage flows in from the input port and flows through the algae covered on the surface of the algae cultivation compartment, and performs preliminary harmless treatment under the photosynthesis of the algae and the symbiosis between the algae and bacteria. In the invention, the mesh port of the algae filter screen is connected to the filter port of the algae culture compartment, the algae culture medium particles are arranged in the algae filter screen, and the algae culture medium particles are used to cover the mesh holes of the algae filter screen and the surface of the culture medium particles. The algal structure filters the sewage out. The invention utilizes the biological characteristics and filters the sewage through the algae filter net structure to obtain denitrified water body. The denitrified water body will not cause eutrophication of the water body after watering the plants, does not affect the original environment, and is green and environmentally friendly.
Owner:MEIZHOU ENVIRONMENTAL EQUIP

A method of electrically coupled biological carbon removal and nitrogen removal for low c/n ratio wastewater

The invention relates to an electrically coupled biological decarbonization and denitrification treatment method for low C / N ratio wastewater, which solves the need for additional treatment processes and artificial dosing in the transformation process of decarbonization and denitrification of low C / N ratio slightly polluted wastewater The technical problem of external carbon source and poor stability of operation effect. The waste water treatment system adopted in the present invention includes a water inlet pump, a reactor and a water outlet pool. The reactor includes reaction tank, positive electrode plate, negative electrode plate, aeration device and biological filler. The two ends of the reaction pool are provided with waste water inlet and waste water outlet respectively. The bottom of the reaction tank is inoculated with heterotrophic nitrification-aerobic denitrification enrichment bacteria solution and aerobic sludge. The positive electrode plate and the negative electrode plate are fixed in the reaction cell. At the same time, electrically coupled biological systems can provide substrate H 2 , and can enhance microbial activity. As a result, the carbon source required for systemic microbial denitrification and denitrification is reduced, so that when the C / N ratio is only 2 to 5, the effluent water quality can reach the first-class A discharge standard or even stricter local standards.
Owner:QUZHOU UNIV
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