196 results about "Aerobic reaction" patented technology

Method and device for treating coking wastewater through denitrification and anammox are provided. The device includes an anaerobic reactor, an anoxic reactor, a sedimentation tank, and an aerobic reactor sequentially communicated, and a coking wastewater tank communicated with the anaerobic reactor through an influent pump. The present disclosure promotes the formation of microgranular sludge in the device through a composite powder carrier, and promotes sulfur-based autotrophic denitrification in anaerobic and anoxic zones through pyrite in the composite powder carrier and an additional sulfur source, and promotes anammox in the anaerobic zone through NO2−—N produced by sulfur-based autotrophic denitrification in the anoxic zone. The present disclosure forms a dual-sludge system through the sedimentation tank to reduce reducing inorganic sulfur-containing substances that compete with nitrifying bacteria, and achieves nitrification in the aerobic zone while oxidizing ionic reducing inorganic sulfur-containing substances. The present disclosure discharges treated wastewater through a membrane component.

The invention discloses a treatment process for acid mine wastewater and a combined reactor thereof, and relates to the technical field of water treatment. The method specifically comprises the following steps: oxidizing the mine acid wastewater through an aerobic reactor; adjusting the pH value to 2.8 by using KOH in a first neutralization reactor, and further adjusting the pH value to 4.5 by using KOH in a second neutralization reactor; the wastewater enters a pretreatment reactor, H2S is introduced for treatment, and the treated wastewater continuously enters two anaerobic reactors for reaction. According to the method, an aerobic-anaerobic combined reactor containing iron oxidizing bacteria and sulfate reducing bacteria is adopted for treating the mine acid wastewater, on one hand, AMD can be effectively treated, on the other hand, heavy metal can be selectively precipitated, and Schwertmannite and metal sulfide with utilization value are obtained. The method not only realizes the economic value of effectively utilizing the wastewater, but also realizes the target of environmental treatment, and has better economic value.

The utility model relates to the technical field of sewage treatment, in particular to a sewage treatment system which comprises a first wetland treatment unit, a second wetland treatment unit and a third wetland treatment unit, the first wetland treatment unit comprises a plurality of treatment assemblies arranged at intervals, the treatment assemblies are periodically filled with sewage, and the third wetland treatment unit comprises a third wetland treatment unit. The first wetland treatment unit is used for treating sewage through aerobic reaction to form first sewage, the second wetland treatment unit comprises a bent section, the bent section comprises a bent wall and an adsorption layer, the adsorption layer covers the bent wall, and the first sewage flows in the extending direction of the bent section; the dissolved oxygen concentration of the second wetland treatment unit is smaller than that of the first wetland treatment unit and larger than that of the third wetland treatment unit, and the third wetland treatment unit receives sewage treated by the second wetland treatment unit and conducts anaerobic reaction. The sewage treatment capacity is improved; meanwhile, the emission of greenhouse gases is reduced.

The invention relates to the technical field of sewage treatment, and discloses integrated sewage treatment equipment and technology.The integrated sewage treatment equipment comprises an aerobic reaction tank, an aeration tank and a clean water tank, a membrane assembly is arranged in the aeration tank, an aeration assembly is arranged at the bottom of the membrane assembly, and a lifting seat is vertically and slidably connected to a fixing frame of the membrane assembly; a plurality of aeration flow guide parts are linearly arranged on the top surface of the lifting seat at equal intervals, a suspension mechanism is arranged on the bottom surface of the lifting seat, each aeration flow guide part comprises a flow guide plate fixedly connected with the lifting seat, clamping plates are connected to the two symmetrical sides of each flow guide plate, and a plurality of flow guide grooves are formed in the sides, opposite to the clamping plates, of the flow guide plates. The air bag is inflated through the residual pressure of the air supply equipment, the lifting seat is driven to intermittently ascend and descend, the flow guide plate guides the bubbles through the inclined surface in the vertical movement process, the bubbles are gathered in the flow guide holes, and therefore the scouring force of the bubbles on the surfaces of the membrane filaments is improved, contact type cleaning is avoided, and the service life of the membrane filaments is prolonged.

The invention discloses assembled aerobic and anaerobic immobilized microorganism sewage treatment equipment, and relates to the technical field of sewage treatment, the assembled aerobic and anaerobic immobilized microorganism sewage treatment equipment comprises: a fixing unit comprising a fixing steel frame, an aerobic reaction zone arranged on the fixing steel frame, and an anaerobic reaction zone arranged on the fixing steel frame, the anaerobic reaction area is arranged on one side of the fixed steel frame, and the aerobic reaction area is connected with the anaerobic reaction area and the condensation pollution discharge area. Through the water flow impact force of sewage, the cleaning assembly can rotate and move up and down in the tank assembly, so that the sewage can be disturbed, and the filtering assembly can better pretreat and filter the sewage and intercept large impurities; meanwhile, through different filtering calibers of a filtering plate in the filtering assembly, soil and sandy soil in the sewage can be greatly intercepted, filtered and collected in a unified mode, and the situation that the sewage adheres to the inner wall of the pipeline, and consequently the pipeline is blocked is prevented.

The utility model discloses a domestic sewage treatment device based on automatic oxygenation, which comprises a first treatment tank and a second treatment tank, an anaerobic reaction tank and an aerobic reaction tank are arranged in the first treatment tank, the upper ends of the anaerobic reaction tank and the aerobic reaction tank are open, and the anaerobic reaction tank is filled with spherical anaerobic materials and is used for performing anaerobic digestion treatment on organic matters in sewage; the aerobic reaction tank is arranged at the periphery of the anaerobic reaction tank, and the aerobic reaction tank is filled with aerobic combined filler and is used for carrying out oxygenolysis treatment on sewage subjected to anaerobic digestion treatment by the anaerobic reaction tank; a water distribution oxygenation plate is arranged at the top end of the aerobic reaction tank; the second treatment tank is communicated with the aerobic reaction tank through a pipeline, and a dephosphorization composite filler is arranged in the middle of the second treatment tank and is used for dephosphorizing and precipitating the sewage subjected to oxygenolysis treatment. According to the domestic sewage treatment device disclosed by the utility model, automatic oxygenation is realized by adopting an unpowered high-efficiency oxygenation technology, and meanwhile, the oxygenation efficiency is improved by utilizing a hedging mode that airflow and sewage flow directions are opposite.

The invention discloses a sewage treatment process optimization control method and a sewage treatment process optimization control system. According to the method, in-situ fluorescence detection devices are respectively arranged in an anaerobic reactor, an anoxic reactor and an aerobic reactor of an AAO biochemical sewage treatment system; acquiring NAD (P) H and protein fluorescence signals based on the in-situ fluorescence detection device, and acquiring dissolved oxygen, oxidation-reduction potential, pH value and temperature process parameters of the anaerobic reactor, the anoxic reactor and the aerobic reactor based on conventional monitoring equipment; establishing a microbial activity index quantitative rating model based on the fluorescence signal intensity, the dissolved oxygen concentration and the temperature, and optimizing the sewage treatment process based on the microbial activity value of each reactor; the process parameters are accurately controlled, the operation stability of the system is improved, and the remarkable effects of reducing the energy consumption and reducing the indexes of ammonia nitrogen, total nitrogen and total phosphorus in effluent are achieved.

The invention discloses a single-stage aerobic SBR (Sequencing Batch Reactor), which relates to the technical field of water treatment and comprises a reaction vessel, a water inlet assembly positioned on one side of the reaction vessel, a sewage discharge assembly positioned on the other side of the reaction vessel, a suspension plate positioned in the middle of the reaction vessel and a suspension tank assembly positioned at the upper part of the interior of the reaction vessel, the reaction vessel is of a hollow structure composed of a bottom cone and a top cylinder, the single-stage aerobic SBR reactor utilizes domesticated and cultured sludge to react with water, meanwhile, the reaction of the sludge and the water is accelerated through the stirring shaft, and then the treated water is subjected to layered recovery through the suspension tank assembly; according to the single-stage aerobic SBR phosphorus removal technology, phosphorus can be efficiently removed under the condition that the concentration of nutrient substances in inflow water is deficient, meanwhile, the single-stage aerobic SBR phosphorus removal technology does not need to be provided with an anaerobic section, the phosphorus removal effect is good, operation is easy and convenient, and the influence of nitrate on the phosphorus removal technology is small, and the existing water quality and facility conditions of a power plant can meet the phosphorus removal requirement of the technology.

The invention discloses a printing and dyeing wastewater treatment modular device based on a coagulating sedimentation-biological treatment process and a printing and dyeing wastewater treatment method, and aims to solve the problems of low organic matter removal efficiency, turbid effluent and the like which are easily caused by anaerobic treatment of printing and dyeing wastewater. The printing and dyeing wastewater treatment modular device is characterized in that a pretreatment tank, a mixed dosing-flocculation tank, a primary sedimentation tank, a UASB (Upflow Anaerobic Sludge Blanket) tank, a hydrolysis acidification tank, an anaerobic sedimentation tank, an aerobic reaction tank and a secondary sedimentation tank are sequentially arranged in an integrated box body along a water flow direction, the baffle plate in each hydrolysis unit is filled with a combined filler, the aerobic reaction tank is composed of a plurality of aerobic units connected in series, and the baffle plate in each aerobic unit is filled with an aerobic filler. By adopting a coagulating sedimentation-biological treatment process, high-chroma printing and dyeing wastewater can be treated, the removal rate of COD (Chemical Oxygen Demand) reaches 85% or above, the removal rate of ammonia nitrogen reaches 95% or above, and an excellent purification effect is shown.

The invention relates to the technical field of aerobic treatment biology, and discloses an aerobic treatment biological synergistic process which comprises the following steps: adding sewage or organic waste or biogas residue / biogas slurry into a first flora culture tank; adding a PH regulator to regulate the PH value; and introducing gas into the first flora culture tank by using an air blower for stirring. According to the aerobic treatment biological synergistic process, the targeted dominant flora can be autonomously cultured according to different treatment objects, and the autonomously cultured flora is automatically added by monitoring various parameters, so that the aerobic reaction process is accelerated, the reaction degree is improved, the reaction time of aerobic treatment is shortened, the process treatment effect is improved, and the treatment cost is reduced. For a sewage aerobic biological treatment process, the COD (Chemical Oxygen Demand) removal rate can be improved; for a process for producing an organic fertilizer through aerobic treatment of organic wastes, the decomposition degree of the organic fertilizer can be improved, the quality of the organic fertilizer can be improved, manual operation is not needed, full-automatic control operation can be realized, meanwhile, dependence on external bacteria or flora is avoided, and the method is worthy of popularization.

The water pan comprises a water pan bottom plate and a water pan side baffle extending upwards from the circumferential outer edge of the water pan bottom plate, and a liquid drainage structure communicated with the water pan side baffle and / or the water pan bottom plate is arranged on the water pan side baffle and / or the water pan bottom plate. The water pan side baffle is provided with a water pan sealing ring of an annular structure. According to the water pan suitable for the closestool, the water pan sealing ring of the annular structure is arranged on the water pan side baffle, so that the water pan can effectively prevent water splashing and water bursting, the problem that the humidity of a biodegradation container is too high is solved, the stability of aerobic reaction of a culture medium is guaranteed, and the service life of the culture medium is prolonged. Odor and other peculiar smells of the closestool are avoided, and the health of a user is protected.

The invention discloses a domestication method and device for salt-tolerant activated sludge, and belongs to the technical field of microculture and sewage treatment devices. In order to solve the technical problems that in the prior art, domestication of salt-tolerant activated sludge is achieved in the mode that salinity is increased in a gradient mode, obtained sludge is poor in genetic adaptability and long in domestication period, the domestication method of the salt-tolerant activated sludge comprises the steps that fresh sludge with the sludge concentration MLSS being 5000-6000 mg / L and the MLSS / MLVSS being larger than or equal to 0.8 is put into a domestication device; the domestication device comprises an anaerobic-anoxic reaction zone and an aerobic reaction zone which are communicated with each other; the concentration of salt in the system is controlled to be 3-5%, when the CODcr removal rate is smaller than or equal to 30%, the CODcr concentration gradient is gradually increased at the gradient of 500-1000 mg / L in the modes of increasing nutrition addition, increasing the aeration rate of the aerobic reaction zone, returning the sludge in the aerobic reaction zone to the anaerobic-anoxic reaction zone, supplementing fresh sludge, discharging inactivated sludge and the like, and the obtained salt-tolerant activated sludge is good in heredity and high in salt tolerance. And the domestication period is short.

The invention provides a sulfur-mediated anaerobic-anoxic-aerobic coking wastewater treatment method and system.The method comprises the steps that after specific strains are inoculated into an anaerobic reactor, an anoxic reactor and an aerobic reactor which are sequentially communicated, coking wastewater to be treated sequentially passes through the anaerobic reactor, the anoxic reactor and the aerobic reactor; and settling through a settling pond to realize wastewater treatment. In the process, the coking wastewater to be treated sequentially passes through the anaerobic reactor inoculated with the sulfate reducing bacteria, the anoxic reactor inoculated with the sulfur autotrophic denitrifying bacteria and the aerobic reactor inoculated with the nitrifying bacteria, and sulfur circulation is embedded in the coking wastewater treatment process, so that various pollutants in the coking wastewater are effectively removed.

The application discloses a kind of bioelectrochemical reactor and the method for processing low concentration wastewater using it, belong to low concentration wastewater treatment technical field.The bioelectrochemical reactor of the application includes reactor top cover and reactor tank body;Gas inlet hole is provided on the reactor top cover, anode, cathode and aeration device are arranged in the reactor tank body, and anode and cathode are connected with external direct-current power supply through titanium wire respectively;Aeration device is connected with gas inlet hole;Anode and cathode are both carbon nanotube modified titanium electrode.When the above-mentioned bioelectrochemical reactor is used to process low concentration wastewater, first, electroactive bacteria are cultivated on the surface of electrode using aerobic sludge, then bioelectrochemical aerobic reaction is carried out, and under aeration condition and low voltage, COD and NH4 + -N removal efficiency can reach more than 95%, electrode corrosion is low, the treatment method is simple and efficient, and no secondary pollution is generated, and has wide application prospect.

The invention discloses a coffee fresh fruit primary processing wastewater treatment process and a wastewater treatment system, and belongs to the technical field of wastewater treatment. The method comprises the following steps: preliminarily filtering coffee processing wastewater; feeding the preliminarily filtered wastewater into a polysaccharide reactor, adjusting the pH value to 7-9, stirring, and flocculating and precipitating to complete pretreatment; s3, carrying out regulation-hydrolytic acidification on the pretreated coffee wastewater, carrying out hydrolytic acidification on macromolecular organic substances in the wastewater, and standing for solid-liquid separation; s4, carrying out oxidation-reduction reaction on the coffee wastewater subjected to hydrolytic acidification treatment; then carrying out anaerobic reaction on the coffee wastewater subjected to the micro-electrolysis reaction to degrade organic matters, and carrying out three-phase separation on solid, liquid and gas; then carrying out an anoxic / aerobic reaction on the coffee wastewater subjected to the anaerobic reaction treatment; and then carrying out ozone / UV catalytic oxidation on the coffee wastewater after the nitrification anoxic / aerobic reaction. According to the method, microelectrolysis and biological treatment processes are combined, the acidic polysaccharide and pectin comprehensive wastewater belongs to high-difficulty wastewater, and pollutants in high-concentration coffee fresh fruit primary processing wastewater are effectively degraded.

The invention belongs to the technical field of water treatment, and particularly relates to an annular vertical internal circulation water treatment reactor and method. The reactor comprises a reactor shell, a central ring shell, an annular partition plate, an aerobic reaction area, an anaerobic reaction area, an anoxic reaction area, an aeration mechanism, a hollow fiber membrane assembly, a divergent throat pipe, a water inlet / return sludge mixing area, a sediment / filter material self-dispersion area, a variable cross-section filter area, a first annular sludge settling area and a second annular sludge settling area. According to the invention, self-circulation vertical flow is formed in the anoxic reaction zone and the aerobic reaction zone by changing the equipment structure and the internal hydraulic action mode and utilizing the gas stripping effect of aeration; a light filter material filter layer is utilized, and a variable cross-section upward flow anaerobic biological filter layer form is adopted, so that the self-dispersion decontamination effect of the filter layer is realized, and the water consumption and the energy consumption are reduced; and the stability of the effluent quality is improved by utilizing the membrane separation effect of the MBR. According to the reactor disclosed by the invention, the optimal proportion of 1: 3: 5 of the anaerobic reaction zone, the anoxic reaction zone and the aerobic reaction zone is realized.

The utility model relates to a treatment device for spraying wastewater, in particular to a treatment device for spraying wastewater. The problems of complicated and changeable water quality, high treatment technical difficulty and high operation cost in the existing spraying wastewater treatment are solved. The device is composed of a flocculation sedimentation tank, a pH adjusting tank, a biological reaction tank, an ozone oxidation tank and an activated carbon adsorption tank. The water outlet of the flocculation sedimentation tank is communicated with the water inlet of the pH regulating tank; the water outlet of the pH regulating tank is communicated with the water inlet of the biological reaction tank; a water outlet of the biological reaction tank is communicated with a water inlet of the ozone oxidation tank; a water outlet of the ozone oxidation tank is communicated with a water inlet of the activated carbon adsorption tank. The biological reaction tank is divided into an anaerobic reaction zone, an anoxic reaction zone and an aerobic reaction zone, and a reflux water outlet of the aerobic reaction zone is communicated with a reflux water inlet of the anoxic reaction zone. Through a plurality of functional modules, pollutants such as suspended matters, organic matters and heavy metals in the spraying wastewater are removed.

The utility model discloses a multi-stage sewage treatment tank which comprises a main tank, a first-stage enclosure and a second-stage enclosure, an inner tank cavity and a plurality of sub tank cavities are separated, a sewage one-way circulation structure is arranged among the sub tank cavities, the first-end sub tank cavity is connected with a sewage inlet pipe, the tail-end sub tank cavity is connected with the inner tank cavity through a standby pumping pipeline, and the inner tank cavity is connected with a purified water outlet pipe. The sub-tank cavity at least comprises a primary sedimentation tank, an aerobic reaction tank and the like, and the inner tank cavity is provided with a deep treatment tank. The secondary sedimentation tank is provided with a sludge hopper, the aerobic and anoxic reaction tanks are provided with stirring devices, and the aerobic tank is provided with an aeration device. The main body pool can be rectangular or annular, and the inner pool cavity is consistent with the main body pool in shape and is reduced in equal proportion. The sewage treatment tank is small in occupied area, compact in structure, convenient to maintain, capable of achieving sewage staged treatment and efficiently removing organic matter, suspended solids and nitrogen and phosphorus nutrient substances, capable of meeting the high requirement standard, convenient to configure an automatic control system and accurately controlling the treatment process, suitable for different sewage treatment requirements, especially suitable for urban sewage treatment, and wide in application prospect.

An amino acid wastewater recycling treatment device comprises a pretreatment tank, an anaerobic reactor, an aerobic reactor, a sedimentation tank, a reverse osmosis device and a water storage tank which are sequentially arranged, a water inlet pipeline is installed on the upper portion of one side of the pretreatment tank and externally connected with an amino acid wastewater output pipeline, and a water outlet pipeline is installed on the lower portion of the other side of the pretreatment tank and externally connected with a water outlet pipeline. The water outlet pipeline is communicated with a water inlet of the anaerobic reactor, a water outlet of the anaerobic reactor is communicated with a water inlet of the aerobic reactor, a water inlet and an overflow port are formed in the upper part of the sedimentation tank, a sludge discharge port is formed in the bottom of the sedimentation tank, and a water outlet of the aerobic reactor is communicated with a water inlet of the sedimentation tank; a water inlet of the reverse osmosis device is communicated with an overflow port of the sedimentation tank, the water storage tank is communicated with a water production port of the reverse osmosis device, and a concentrated water port of the reverse osmosis device is communicated with a concentrated water pipeline. The amino acid wastewater treatment device is specially designed for the amino acid wastewater, is favorable for realizing efficient treatment and recovery of the amino acid wastewater, and is environment-friendly.

The invention provides a modular rural sewage-biogas-fertilizer co-production system based on micro-aerobic circulation, which comprises a water distribution unit, a plurality of treatment units and a co-production unit, the water distribution unit comprises a distribution box and a plurality of partition plates fixedly connected with the inner wall of the distribution box, the plurality of partition plates divide the distribution box into a plurality of water storage areas, and the water storage areas are communicated with the treatment units. The water storage areas are provided with preset water levels, and the partition plates are provided with through grooves for communicating the two adjacent water storage areas at the elevation positions of the preset water levels. The treatment units are communicated with the water storage areas in a one-to-one correspondence mode, valves are arranged at the communication positions of the treatment units and the corresponding water storage areas, and the treatment units conduct hydrolytic acidification treatment, micro-aerobic reaction treatment and biological treatment on sewage flowing out of the corresponding water storage areas in sequence; the co-production unit comprises a gas collection module and a fertilizer preparation module, the gas collection module is used for collecting biogas generated by the treatment unit, and the fertilizer preparation module is used for preparing redundant sludge of the treatment unit into biochar. The working pressure of the sewage treatment system is reduced when the water consumption is increased suddenly.

The invention discloses a nested self-phase heat exchange type anaerobic-aerobic-anoxic combined reactor which comprises an anaerobic reactor, an anoxic reactor and an aerobic reactor, the anaerobic reactor is located at the center of the reactor, the aerobic reactor sleeves the surface of the anaerobic reactor, the anoxic reactor sleeves the surface of the aerobic reactor, and the anoxic reactor sleeves the surface of the aerobic reactor. And the surface of the anaerobic reactor is fixedly sleeved with a thermal insulation layer. The sewage treatment equipment has the advantages of energy conservation and environmental protection, and solves the problems that in the using process of existing sewage treatment equipment, heat energy of an aerobic reactor is inconvenient to recycle and is used for heating an anaerobic system, energy waste is easily caused, and the environmental protection property of the sewage treatment equipment is reduced.

The application discloses high-efficiency aerobic granular sludge and a preparation method and application thereof, and belongs to the technical field of biological wastewater treatment. The application provides high-efficiency aerobic granular sludge and a preparation method thereof. The granular sludge is prepared by taking dewatered sludge with a water content of 60-75% in a wastewater plant as a raw material, and through steps of mud cake crushing, particle size screening, specific gravity air selection and elutriation activation, and has different particle sizes, a specific gravity of 1.04-1.10, a sphericity coefficient of 0.75-0.95, a consistency of 0.50-0.65 and a diameter distance of 1.05-1.50, so that the AGS system can be rapidly started. The high-performance granular sludge can be prepared only by simple processing operation. It has been verified that the granular sludge prepared by the application is added to an aerobic reactor, which helps to achieve the target requirements of rapid starting and stable operation of the AGS system.

The invention belongs to the technical field of biological membranes for water pollution control, and discloses an integrated continuous two-stage anoxic / aerobic MBBR (Moving Bed Biofilm Reactor) which comprises a cylindrical shell provided with a water inlet, a water outlet and a reflux inlet, the interior of the cylindrical shell is divided into four areas A1, O1, A2 and O2, and the four areas A1, O1, A2 and O2 are respectively used as containers of a pre-anoxic MBBR, a pre-aerobic MBBR, a post-anoxic MBBR and a post-aerobic MBBR; the top heights of the water retaining partition plate between the O2 area and the A2 area, the water passing partition plate between the A1 area and the O1 area, the water passing partition plate between the O1 area and the A2 area and the water passing partition plate between the A2 area and the O2 area are sequentially reduced, and the flowing direction of water flow from the A1 area to the O1 area to the A2 area to the O2 area is formed. The method can be used for treating high NH4 < + >-N concentration (gt; the device is simple in structure and convenient to disassemble and assemble, the area and the space can be effectively utilized, and a novel strategy is provided for improving the efficiency of a sewage treatment plant for treating sewage with high NH4 < + >-N concentration.

The application discloses an electrolytic catalytic biological denitrification reactor and relates to the technical field of sewage treatment. The electrolytic catalytic biological denitrification reactor comprises a reactor body, an external power supply connected to the reactor body, an anaerobic reaction chamber and an aerobic reaction chamber separated by a first partition wall in the inner cavity of the reactor body, and a first drainage hole formed in the first partition wall. A water inlet is formed in the outer side wall of the anaerobic reaction chamber. A unit cathode and a water flow propeller are fixed in the anaerobic reaction chamber. A water outlet is formed in the outer side wall of the aerobic reaction chamber. A unit anode and a water flow propeller are fixed in the aerobic reaction chamber. The unit anode and the unit cathode are connected in parallel through wires, and the wires are connected to the external power supply. The electrolytic catalytic biological denitrification reactor can effectively improve the biological denitrification efficiency, reduce the pollution to the environment, has strong adaptability to water quality changes, has good sludge settling performance, is easy to maintain, manage and operate, has high denitrification efficiency, and has small land occupation.

The utility model relates to composite clean water treatment equipment which comprises an anaerobic reaction tank, an anoxic reaction tank, an aerobic reaction tank, a sedimentation tank, a primary filter tank, an MBR (Membrane Bioreactor) membrane tank and a clean water tank which are communicated in sequence, sewage in the anaerobic reaction tank enters the anoxic reaction tank from bottom to top after reaction; sewage degraded by microorganisms in the anoxic tank flows into the aerobic reaction tank from bottom to top; sewage reacted in the aerobic reaction tank enters a sedimentation tank from bottom to top; after the sewage in the sedimentation tank is settled, clear water enters the primary filter tank to be filtered, and the sewage flows back to the anaerobic reaction tank to be filtered again; sewage in the primary filter tank is sequentially filtered, adsorbed and purified by a volcanic rock layer, a quartz sand layer and a bamboo charcoal layer from top to bottom and then enters the MBR membrane tank, water in the MBR membrane tank is filtered by an MBR membrane and then enters the clean water tank, and water in the clean water tank is disinfected, sterilized, decolorized and deodorized by ozone and then is used for circularly flushing a toilet. The equipment is efficient in sewage COD (Chemical Oxygen Demand) degradation, nitrogen and phosphorus removal and solid-liquid separation effects.

A pretreatment process for anaerobic digestion sludge in a municipal sewage treatment plant, comprising the following steps: Step 1, slurry distribution; Step 2, static thickening; Step 3, slurry flora cultivation; Step 4, primary slurry dewatering; Step 5, secondary slurry dewatering; Step 6, aerobic treatment of slurry; Step 7, alkali treatment of slurry; Step 8, slurry mixing; Step 9, slurry heating; In the present invention, the slurry produced by the sewage treatment plant is divided into two portions. One portion is used to cultivate anaerobic flora in the sludge through a flora cultivation device. The cultivation of anaerobic flora can reduce the sludge digestion gas production time in the digestion tank. The other portion undergoes two-stage dewatering, and the slurry dewatered by the centrifuge undergoes an aerobic reaction to allow the rapid growth of aerobic microorganisms, enabling more microbial cells to be dissolved in the subsequent alkali treatment. The sludge after pretreatment has increased sludge organic matter content, thereby improving the unit gas production rate of the sludge in the digestion tank in the next step.

The utility model relates to a wastewater denitrification and desulfurization treatment device which is characterized in that a water distributor is arranged at the lower part of an anaerobic reaction tank of an anaerobic reactor, a three-phase separator is arranged at the upper part of the anaerobic reaction tank of the anaerobic reactor, and a stirrer is arranged on an anoxic reaction tank of an anoxic reactor; an overflow port of the anaerobic reaction tank is connected and communicated with the anoxic reaction tank, a reflux port of the anaerobic reaction tank is connected and communicated with the anaerobic reaction tank through a wastewater reflux pipe, an aerator is arranged at the bottom of an aerobic reaction tank of the aerobic reactor, the anoxic reaction tank is connected and communicated with the aerobic reaction tank, a partition plate is arranged in the settling pond, a water inlet area is arranged on one side of the partition plate, and a settling area is arranged on the other side of the partition plate. A clear liquid outlet pipe is arranged at the upper part of the inclined plate of the sedimentation tank, a communicated clear liquid return pipe is arranged at the front part of the clear liquid valve of the clear liquid outlet pipe, and the clear liquid return pipe is communicated with the anoxic reaction tank. According to the device, the sulfate radical removal rate is high, nitrate in the wastewater can be simultaneously removed while sulfate radicals in the wastewater are removed, and the equipment investment and the treatment cost are reduced.

The utility model belongs to the technical field of domestic sewage treatment devices, and particularly relates to a domestic sewage resourceful treatment device which is characterized in that an anaerobic zone, an anoxic zone and an aerobic zone are sequentially formed in an anaerobic-anoxic-aerobic reaction tank from bottom to top, and sewage sequentially enters the anaerobic zone, the anoxic zone and the aerobic zone from a sewage collection tank; part of organic matters are ammoniated while phosphorus is released through anaerobic reaction balls, denitrification treatment is performed in the anoxic zone, BOD removal, nitrification and phosphorus absorption are realized through floating filler in the aerobic zone, and finally treated water subjected to denitrification and dephosphorization is separated out through a solid-liquid separator, so that sewage treatment is completed. According to the utility model, a complete A2 / O (anaerobic-anoxic-aerobic) process is realized in one reaction tank, the occupied area of the sewage treatment device is reduced, the construction cost is greatly reduced, and the popularization of the rural domestic sewage resourceful treatment device is facilitated.

The present application relates to sewage biological treatment technology field, disclose a kind of continuous flow aerobic granular sludge rapid formation and stable regulation and control method, device, method is in the peak value window of organic substrate concentration of influent in anaerobic selection area Pulse light stress is applied, trigger microbial stress defense, drive microbial self-aggregation and excrete extracellular polymer substance and form granular precursor;Granular precursor is strengthened after structure in aerobic reaction zone, by two-stage hydraulic screening respectively according to settling performance, density difference separates aggregate, again low-density floc rich in phosphorus-accumulating bacteria is backflowed to anaerobic zone, high-density granules rich in nitrifying bacteria are backflowed to aerobic zone, realize functional flora directional ecological niche adaptation.The present application replaces high-intensity hydraulic shear with light stress to drive granulation, can greatly shorten start-up period, reduce operating energy consumption, inhibit filamentous bacteria expansion from source, realize the significant improvement of simultaneous nitrification and phosphorus removal efficiency.

The invention discloses a biofuel wastewater treatment method. The method comprises the following steps: sewage enters a mixing tank through a grid; pumping water in the mixing tank into a coagulation air floatation tank, and adding a PAC / PAM coagulant into the coagulation air floatation tank; after a coagulation reaction is carried out in the coagulation air floatation tank, water in the coagulation air floatation tank is pumped into the UASSB reaction tank, and an anaerobic reaction is carried out in the UASSB reaction tank; pumping water in the UASSB reaction tank into a CASS reaction tank, and carrying out an aerobic reaction in the CASS reaction tank; pumping water in the CASS reaction tank into a precision filter tank; and pumping water in the precision filter tank to a disinfection tank. According to the method, secondary pollution to the environment is prevented, emission of pollution factors is reduced, and the regional environment is effectively improved.