75 results about "Aerobic reaction" patented technology

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 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.

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.

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 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 relates to an advanced treatment method and system for Maotai-flavor liquor wastewater, and belongs to the technical field of wastewater treatment.The advanced treatment method comprises the steps that S1, primary catalytic ozonation treatment is conducted on liquor wastewater obtained after secondary biochemical treatment, and primary catalytic ozonation effluent is obtained; s2, performing biochemical treatment on the primary catalytic ozonation effluent to obtain biochemical effluent; the biochemical treatment is performed according to the series operation of aerobic reaction, anaerobic reaction and aerobic reaction; s3, carrying out secondary ozone catalytic oxidation treatment on the biochemical effluent; and S4, refluxing the secondary catalytic ozonation effluent, mixing the refluxed secondary catalytic ozonation effluent with the primary catalytic ozonation effluent, and repeating the steps S2 and S3. The advanced treatment method provided by the invention can effectively remove refractory organic matters and various forms of nitrogen in the Maotai-flavor liquor wastewater, has a relatively good removal effect on COD, ammonia nitrogen and total nitrogen in the wastewater, and ensures that various indexes of final discharged water stably reach the standard.

The application discloses a flexible lifting cover open inlet and outlet material reactor, which comprises a double-layer flexible cover, a crane support, a top net support, a ring-shaped water seal pool, a high-pressure oxygen increasing machine, a circulating liquid pool, a circulating pump, a discharge pump, a crane and a movable track plate, and is characterized in that the double-layer flexible cover can be automatically lifted, the ring-shaped cover feet around the double-layer flexible cover are sealed by water in the ring-shaped water seal pool, and the ring-shaped cover feet and the double-layer flexible cover around the ring-shaped cover feet are automatically lifted to the upper part by the crane during feeding or slagging, so that the whole reactor around is fully opened and ventilated, safe feeding or slagging is realized, the technical scheme can be used as an aerobic reactor and an anaerobic reactor, the application can be widely applied in the fields of new energy and environmental protection, and is used for degradation treatment of organic waste generated in urban and rural industrial and agricultural production and people's life, and is a new energy and environmental protection device.

This invention provides an apparatus and method for recovering nitrous oxide from high-ammonia-nitrogen wastewater using algae-bacteria symbiotic technology. The apparatus includes an aerobic reaction unit and an anoxic reaction unit; the first outlet of the aerobic reaction unit and the inlet of the anoxic reaction unit are connected, and a monovalent anion exchange membrane is installed at the connection point; the aerobic reaction unit is connected to a first gas collection unit via a first gas outlet, and the anoxic reaction unit is connected to a second gas collection unit via a second gas outlet, for recovering nitrous oxide generated in both the aerobic and anoxic reaction units. This invention, by inoculating the aerobic reaction unit with algae-bacteria symbiotic sludge that achieves short-cut nitrification, effectively reduces the aeration energy consumption of short-cut nitrification through microalgae photosynthesis, realizes the recovery of nitrous oxide in the aerobic reaction unit, reduces the denitrification load in the anoxic reaction unit, increases the denitrification conversion rate, and reduces operating costs, embodying a high-efficiency, low-carbon, and environmentally friendly design concept.

This application relates to a landfill leachate treatment device, belonging to the field of landfill treatment. It includes a filter box containing filter plates. One side of the filter box is connected to an anaerobic reactor via a first outlet pipe. One side of the anaerobic reactor is connected to an aerobic reactor via a second outlet pipe. One side of the aerobic reactor is connected to an activated carbon box via a third outlet pipe. The activated carbon box contains multiple activated carbon plates. This application effectively reduces the impact of impurities in the leachate on the overall treatment process.

The utility model provides an efficient degassing system for aerobic granular sludge based on internal circulation degassing, which relates to the field of biological sewage treatment and comprises an aerobic reactor and an internal circulation degassing unit, the aerobic reactor is provided with a water inlet and an effluent weir, and an aerator is arranged inside the aerobic reactor; the internal circulation degassing unit comprises a degassing cylinder and a gas collecting cover arranged above the degassing cylinder, a guide cylinder is arranged in the degassing cylinder, the guide cylinder is opened up and down, the upper part of the guide cylinder is an inlet and is connected with an effluent weir through a guide pipe, a guide sheet is arranged in the guide cylinder, and an inclined baffle fixed on the inner wall of the degassing cylinder is arranged on the outer side of the guide cylinder; a water outlet in the upper part of the degassing cylinder is connected with the water inlet through a circulating pump; the degassing cylinder is communicated with the reactor through the flow guide pipe, the degassed sludge returns to the reactor through the circulating pump to form a closed loop, and through multi-mechanism collaborative degassing, the problem of particle floating caused by bubble adhesion, air bag and floc entrainment can be effectively solved, and the degassing effect is good.

This invention provides an aerobic reactor for wastewater treatment, comprising a tank, a sludge-water separation device disposed at the upper and lower parts of the tank, and at least one set of hydraulic mixing and oxygen supply devices. A clear liquid outlet is provided at the top of the side wall of the tank. The hydraulic mixing and oxygen supply device includes a liquid distributor and several upward-spraying and downward-spraying hydraulic agitators evenly distributed on both sides of the tank, with the number of upward-spraying hydraulic agitators not less than the number of downward-spraying hydraulic agitators. The inlet and outlet of the liquid distributor are respectively connected to the wastewater source and the hydraulic agitators. The sludge-water separation device includes a sludge-water separation module and a horizontal annular baffle sandwiched between the upper outer part of the sludge-water separation module and the inner side wall of the tank. The horizontal annular baffle is located below the clear liquid outlet. The aerobic reactor of this invention can achieve mixed oxygen supply for wastewater treatment, with high oxygenation efficiency, high oxygen utilization rate, good treatment effect and sludge-water separation effect, and low oxygenation energy consumption.

The application relates to the technical field of rural sewage treatment and resource utilization, and discloses a rural sewage treatment and resource utilization system, which comprises a pretreatment module, a biological treatment module and a deep treatment module; the pretreatment module comprises an adjusting tank and a grating; the biological treatment module comprises an aerobic reactor and an anaerobic reactor; a filter layer and an aeration assembly are arranged in the aerobic reactor; the anaerobic reactor is arranged above the aerobic reactor; a filler layer is arranged at the bottom of the anaerobic reactor; the deep treatment module comprises a sedimentation tank and a filter; water pipes and water pumps are arranged in communication between the adjusting tank and the anaerobic reactor and between the aerobic reactor and the sedimentation tank; the water pipe connected with the aerobic reactor and the sedimentation tank penetrates through the filter and extends to the lower side of the filter; a recycled water storage tank is arranged on the side, away from the biological treatment module, of the sedimentation tank; and the recycled water storage tank and the sedimentation tank are connected with an overflow pipe. The application has the effect of improving the sewage treatment efficiency.

The application discloses a sewage treatment equipment applied to cold regions, which comprises a hydrolytic acidification treatment tank, an anoxic reaction tank, an aerobic reaction tank, a screening tank, a primary sedimentation tank and a secondary sedimentation tank; a first gas stripping device is arranged in the hydrolytic acidification treatment tank; the anoxic reaction tank is communicated with the bottom of the hydrolytic acidification tank; the aerobic reaction tank is communicated with the upper portion of the anoxic reaction tank; the screening tank is communicated with the bottom of the aerobic reaction tank; the primary sedimentation tank is communicated with the upper portion of the screening tank; and the secondary sedimentation tank is communicated with the upper portion of the primary sedimentation tank. The sewage treatment equipment can perform multi-stage sedimentation on sewage, can also screen activated sludge, forms high-concentration agglomerated biochemical sludge, and can treat biological sewage in cold regions in the north, and can also realize sludge backflow, supplement nutrients and biochemical bacteria for the front end.

The invention discloses a degradation-resistant organophosphorus wastewater biochemical coupling advanced oxidation treatment method which comprises the following steps: S1, introducing degradation-resistant organophosphorus wastewater into an adjusting tank, carrying out water quality analysis and coagulation pretreatment, and adjusting the pH value; s2, introducing the pretreated wastewater into an anaerobic reaction device for anaerobic treatment; s3, introducing the anaerobic effluent into an aerobic reaction device, and carrying out microbial degradation treatment; and S4, precipitating the aerobic effluent, introducing the precipitated aerobic effluent into an advanced oxidation device, adding potassium persulfate and a ferrous activator under a heating condition, and starting an advanced oxidation reaction to realize removal of phosphorus. According to the method, ferrous iron is used as an activating agent to catalyze potassium persulfate to generate sulfate free radicals and hydroxyl free radicals, organic phosphorus is rapidly converted into orthophosphorus, meanwhile, phosphate precipitates are formed, and the dosage of a subsequent phosphorus removal agent is reduced or not increased.

The application provides a device and method for treating municipal sewage based on short-range denitrification coupled with anaerobic ammonia oxidation continuous flow, the device comprises a water inlet unit, a composite biofilm reactor, a hydroxylamine dosing unit, a backwashing unit and an aeration unit, the composite biofilm reactor comprises an anoxic reaction zone and an aerobic reaction zone in sequence; the water inlet unit is connected with the anoxic reaction zone, the outlet of the aerobic reaction zone is connected to the anoxic reaction zone through an external pipeline, the hydroxylamine dosing unit is connected with the anoxic reaction zone, the backwashing unit is connected with the bottom of the anoxic reaction zone, and the aeration unit is connected with the bottom of the aerobic reaction zone. Through the division of the reaction zone of the composite biofilm reactor and the setting of the structure units such as hydroxylamine dosing, backwashing and aeration, the sewage can be continuously treated, the short-range denitrification can be quickly started through the control of the hydroxylamine dosing process, the ammonia nitrogen removal rate is high, the treatment load is high, the sewage treatment cost can be reduced, and the device is suitable for multiple application scenarios.

The invention discloses a food processing wastewater treatment modular device and a treatment method, and belongs to the field of wastewater treatment. A food processing wastewater treatment modular device comprises a box body, and a pretreatment module, a coagulation air flotation module, a UASB biological treatment module and a subsequent treatment module are sequentially arranged in the box body in series in the water flow direction; wherein the coagulation and air flotation module comprises a coagulation and flocculation tank, a dissolved air pressurization tank and an air flotation tank which are communicated in sequence; the subsequent treatment module comprises an anaerobic primary sedimentation tank, an aerobic reaction tank and a secondary sedimentation tank which are sequentially communicated, wherein the aerobic reaction tank consists of a plurality of aerobic units which are connected in series; the device is suitable for different-scale food processing wastewater treatment requirements from small workshops to large factories, the occupied area is only 60%-70% of that of a traditional device, installation is convenient and fast, the COD removal rate after treatment is larger than or equal to 98%, the grease removal rate is larger than or equal to 98%, effluent meets the discharge standard, and the device has the advantages of practicability, environment friendliness and intelligence.

The present application relates to sewage treatment technical field, specifically to a kind of sewage treatment system and method, the sewage treatment system includes first wetland treatment unit, second wetland treatment unit and third wetland treatment unit, first wetland treatment unit includes multiple interval arrangement processing component, processing component periodically fills sewage, and first sewage is formed by treating sewage through aerobic reaction, second wetland treatment unit includes bending section, bending section includes bending wall and adsorption layer, adsorption layer covers on bending wall, first sewage flows along the extension direction of bending section, the dissolved oxygen concentration of second wetland treatment unit is less than the dissolved oxygen concentration of first wetland treatment unit and greater than third wetland treatment unit, third wetland treatment unit receives the sewage after second wetland treatment unit processing and carries out anaerobic reaction, the sewage treatment system of the present application embodiment, greenhouse gas emissions is reduced while improving the treatment capacity of sewage by artificial wetland cascade treatment sewage.

The invention discloses environment-friendly sewage treatment equipment which comprises a filter tank, a first filter, a second filter, an anaerobic reaction box, an aerobic reaction box and a membrane filter which are sequentially communicated, a cleaning box is arranged at the bottom of the membrane filter, and a movable seat is arranged in the membrane filter. The upper portion of the movable seat is in axial sliding connection with the membrane filter through a movable water guide pipe, the membrane filaments are installed on the lower portion of the movable seat, a first circulation rod is arranged on the lower portion of the movable seat, an isolation plate is fixedly arranged on the first circulation rod, and the bottom of the cleaning box is rotationally connected with a rotating disc which can be combined with the isolation plate and rotate synchronously with the isolation plate. The environment-friendly sewage treatment equipment is used for carrying out multi-stage treatment on sewage to obtain clear water, the membrane filter is provided with the cleaning box, membrane filaments can automatically enter the cleaning box to be subjected to centrifugal dispersion cleaning, discharging of impurities among the membrane filaments is facilitated, meanwhile, backwashing can be achieved in the membrane filament dispersion process, and the efficiency is improved. The membrane wire surface impurity separation is facilitated.

This invention provides a process and strain for removing recalcitrant organic matter and performing deep denitrification treatment on wastewater from Maotai liquor production. The specific process includes introducing wastewater into a regulating tank for water quality analysis; introducing the wastewater from the regulating tank into an anaerobic reactor; and introducing the effluent from the anaerobic reactor into an aerobic reactor, adding *Moraxella rosenbergii* (seawater). Rossellomorea aquimaris The process involves ZC2402-MT oxidation; the aerobic reaction effluent is then fed into an ozone reactor to convert the remaining recalcitrant organic nitrogen into ammonia nitrogen; the ozone effluent is then fed into a BAF (Biological Acid Fluidization) unit to remove remaining COD and perform nitrification; the BAF effluent is then fed into an autotrophic denitrification unit. This invention cultivates highly efficient degrading bacteria for the recalcitrant organic matter portion of liquor wastewater, while simultaneously adjusting the process to ensure that the effluent COD and total nitrogen meet standards, and to reduce costs, providing a more scientific, rational, and effective process for the treatment of liquor wastewater.

The utility model discloses a combined stirring device for sewage treatment. The combined stirring device comprises an assembling bracket, a driving motor, a stirring rotating shaft and an air supply device, the driving motor is in transmission connection with the stirring rotating shaft, and the stirring rotating shaft is connected with the stirring assembly, provided with the aeration assembly and connected with the air supply device. And the bottom end of the rotating shaft is connected with the base. The stirring assembly comprises a first transverse connecting part, a second transverse connecting part and a vertical stirring rod, and an aeration pipe of the aeration assembly is arranged on the second vertical stirring rod and is connected with an air supply disc and an air supply device through an air supply connecting hose and a rotary air supply structure. The second transverse connecting part is provided with a telescopic rod piece and a driving structure. And a guide plate is arranged at the bottom end of the rotating shaft. The device adopts the combination of fixed and adjustable movable stirring structures and the ingenious arrangement of the aeration pipe, realizes the synchronization of stirring and aeration, overcomes the problems of stirring dead angles, low efficiency, poor aeration and the like of the existing stirring device, improves the efficiency and quality of oxygen transfer and sewage treatment of the aerobic reaction tank, and has remarkable technical and application values.

The utility model discloses a biochemical treatment system for treating oil sludge by utilizing microorganisms, which relates to the technical field of oil sludge treatment and comprises a pretreatment system, an anaerobic reaction system, an aerobic reaction system, a solid-liquid separation system and a controller, the controller is electrically connected with electrical elements in the pretreatment system, the anaerobic reaction system, the aerobic reaction system and the solid-liquid separation system; according to the utility model, the pretreatment system is arranged, so that the physical properties of the oil sludge can be adjusted before microbiological treatment, the viscosity of the oil sludge is obviously reduced, and the subsequent treatment efficiency and quality are improved.

The utility model relates to the technical field of agricultural water treatment equipment, in particular to a nitrogen and phosphorus removal reactor for agricultural non-point source nitrogen and phosphorus pollutant treatment, which comprises a frame and a treatment cylinder mounted on the frame. A water inlet pipe and a water outlet pipe are respectively mounted at the left end and the right end of the treatment cylinder, and a settling zone, a filtering zone, an aerobic reaction zone and an anaerobic reaction zone are respectively arranged in the treatment cylinder from left to right. According to the utility model, the movable and modularized nitrogen and phosphorus pollutant treatment function is realized by integrating the frame and the treatment barrel. The interior of the treatment cylinder is scientifically divided into a settling zone, a filtering zone, an aerobic reaction zone and an anaerobic reaction zone, and the partition design can sequentially complete primary settling, physical filtering, aerobic biological treatment and anaerobic biological treatment of pollutants, so that nitrogen and phosphorus pollutants in the water body are effectively removed.

The utility model discloses a wastewater treatment device which comprises a wastewater collecting tank, the wastewater collecting tank is connected with a filtering mechanism through a guide pipe, the filtering mechanism is connected with an acid-base neutralization coagulating basin through a guide pipe, and the acid-base neutralization coagulating basin is connected with a precipitation separation tank through a guide pipe. The precipitation separation tank is connected with an oxidation-reduction tank through a guide pipe, the oxidation-reduction tank is connected with an anaerobic reaction tank through a guide pipe, the anaerobic reaction tank is connected with an aerobic reaction tank through a guide pipe, and the aerobic reaction tank is connected with an adsorption mechanism through a guide pipe. By arranging an acid-base neutralization coagulation tank, a precipitation separation tank, an oxidation reduction tank, an anaerobic reaction tank, an aerobic reaction tank and an adsorption mechanism, the adsorption mechanism is composed of a secondary adsorption system, a micro-electrolysis adsorber, a heavy metal adsorber and an organic matter adsorber, so that full treatment of wastewater is realized.

The present invention relates to the technical field of water treatment. Disclosed is a single-stage aerobic SBR, comprising a reaction vessel, a water inlet assembly located on one side of the reaction vessel, a sludge discharge assembly located on the other side of the reaction vessel, a suspension plate located at the center inside the reaction vessel, and a suspension tank assembly located at the upper part inside the reaction vessel. The reaction vessel is a hollow structure consisting of a bottom cone and a top cylinder. The single-stage aerobic SBR reacts acclimated and cultured sludge with water, uses a stirring shaft to speed up the reaction between the sludge and the water, and then uses the suspension tank assembly to implement stratified recovery of treated water, so that phosphorus can be efficiently removed when there is a shortage of the concentration of nutrient substances in influent. Moreover, the phosphorus removal process of the single-stage aerobic SBR is a phosphorus removal process that does not require an anaerobic section, exhibits a good phosphorus removal effect, is easy to operate, and is less affected by nitrates. The existing water quality and facility conditions of power plants can meet the requirements of the phosphorus removal process.

The present application relates to a kind of anaerobic micro-aerobic reaction systems without three-phase separator, including reactor and external circulation oxygenation unit, the reactor is from bottom to top including water distributor, secondary sludge-water separator, primary sludge-water separator and exhaust port, the bottom of primary sludge-water separator is connected secondary sludge-water separator by flow guide pipe, for the sludge separated by primary sludge-water separator is input secondary sludge-water separator, the bottom of secondary sludge-water separator is equipped with external circulation pipe, external circulation pipe connects external circulation oxygenation unit, for the sludge separated by secondary sludge-water separator is input external circulation oxygenation unit;The upper portion of secondary sludge-water separator is equipped with drain pipe, for output water production;The external circulation oxygenation unit includes jet, the inlet of jet is connected with external circulation pipe and air pipe respectively, and the outlet is connected with water inlet pipe.

The invention discloses a process for treating feces by using microorganisms, and relates to the technical field of feces treatment. Excrement in the toilet is discharged into the pretreatment tank, and the nano oxygen generator in the adjusting tank performs superoxide reaction on organic matters in the excrement until the organic matters are completely flocculated; solid-liquid separation is carried out on the feces after the superoxide reaction through an unpowered filter device, separated solids fall into a sludge drying tank, and separated wastewater is discharged into a primary treatment tank; wastewater enters the anaerobic reactor of the primary treatment tank for anaerobic fermentation, and then enters the aerobic reactor of the primary treatment tank for aerobic fermentation. After excrement discharged to the regulating reservoir from a public toilet is subjected to superoxide flocculation, solid-liquid separation, anaerobic and aerobic alternate fermentation, multi-medium filtration and ultraviolet disinfection and sterilization treatment, obtained purified water can be used for flushing the toilet again, reuse of reclaimed water and recycling of toilet flushing water are achieved, tap water is not needed for flushing the toilet, a large amount of water resources are saved, and meanwhile zero emission of pollutants is achieved.

The invention relates to an intensive farmland recession multistage ecological purification system, and belongs to the technical field of water treatment, the system comprises a precipitation slow flow unit, an aerobic reaction tank, an anaerobic reaction tank and an ecological treatment unit, the precipitation slow flow unit can carry out regulation, storage and slow flow on incoming water, and precipitate suspended solids and particulate pollutants; an aeration device and a plurality of three-dimensional floating wetlands are arranged in the aerobic reaction tank, and the three-dimensional floating wetlands are used for providing an adhesion growth carrier and a rhizosphere microenvironment; a plurality of bio-membrane reactors are arranged in the anaerobic reaction tank, and the bio-membrane reactors are used for providing anaerobic adhesion growth interfaces to enrich denitrifying microorganisms; the ecological treatment unit is used for ecologically and stably purifying the effluent to inhibit the fluctuation of water quality parameters. The device has the advantages that various pollutants such as suspended solids, nitrogen and phosphorus can be efficiently removed, and meanwhile the occupied area can be effectively reduced.

The embodiment of the application discloses a low C / N sewage ammonia nitrogen and nitrate nitrogen synchronous removal system, which comprises an anoxic reactor, an aerobic reactor and a sedimentation module, the anoxic reactor and the aerobic reactor are connected in series, the slow-release carbon filler is filled in the anoxic reactor, the slow-release carbon filler provides a microbial attachment carrier and realizes catalytic degradation of ammonia nitrogen through iron and manganese oxides. The slow-release carbon filler realizes anaerobic ammonia oxidation under the cooperation of denitrification and Fe and Mn in the anoxic reactor, so that the ammonia nitrogen and the nitrate nitrogen in the sewage are synchronously removed. The load type biofilm filler is arranged in the aerobic reactor, the activated sludge is recycled through the sedimentation reflux device on the basis of further control of tail water COD, and the Fe and Mn catalysts are efficiently recycled. Through the low C / N sewage ammonia nitrogen and nitrate nitrogen synchronous removal system provided by the embodiment of the application, efficient denitrification of the low C / N sewage is realized. The denitrification process does not need to add an additional carbon source, the sludge reflux amount is small, and the ammonia nitrogen and the nitrate nitrogen can be synchronously removed.

The application discloses an environment-friendly sewage treatment equipment, which comprises a filter tank, a first filter, a second filter, an anaerobic reaction box, an aerobic reaction box and a membrane filter which are sequentially connected, a cleaning box is arranged at the bottom of the membrane filter, a movable seat is arranged in the membrane filter, the upper portion of the movable seat is axially slidably connected with the membrane filter through a movable water guide pipe, membrane filaments are arranged at the lower portion of the movable seat, a first flow-through rod is arranged at the lower portion of the movable seat, an isolation plate is fixedly arranged on the first flow-through rod, and a rotating disc which can be combined with the isolation plate and synchronously rotated is rotatably connected to the bottom of the cleaning box. The environment-friendly sewage treatment equipment is used for multi-stage treatment of sewage to obtain clean water. The membrane filter is provided with the cleaning box, the membrane filaments can automatically enter the cleaning box for centrifugal dispersion cleaning, the discharge of impurities between the membrane filaments is facilitated, and backwashing can be realized during the dispersion of the membrane filaments, so that the impurities on the surface of the membrane filaments are separated.