177 results about "Greywater reuse" patented technology

The invention provides a combined process of tower angleworm bio-filters and constructed wetlands for treating the domestic sewage. The combined process comprises the following steps: firstly, the sewage enters a hydrolysis-acidification pool and stabilizes after the action, and the water quantity is adjusted; secondly, the domestic sewage in the hydrolysis-acidification pool is distributed into a hydrolysis-acidification pool for removing COD, total nitrogen, nitrogen-nitrogen, total phosphorus and pathogeny microbes; and thirdly, the tail water in the second step enters a constructed wetland to be subjected to strengthening treatment, thereby building a suitable waterfront surroundings landscape, or the tail water is recycled by serving as reclaimed water. The combined process has the following advantages: firstly, the system hydraulic loading is high, and the surface hydraulic loading can reach 1m<3> / m<2>*d, thereby greatly saving land; and secondly, under the high hydraulic loading, the total nitrogen removal rate of the system can reach more than 85 percent; the removal rates of other materials in the system are all more than 90 percent, the effluent reaches the primary standard of the national sewage comprehensive emission standard (GB8978-1996), and reaches the miscellaneous domestic water quality standard of the PRC construction standard (CJ25.1-89), thereby being able to be recycled by serving as the reclaimed water.

The invention discloses a method of recycling reclaimed water for a recirculating cooling water system. The method comprises steps of: (1) adding a zinc salt corrosion inhibitor and a first corrosion inhibitor into the reclaimed water with the first corrosion inhibitor containing hydroxyl carboxylate and / or a transition metal salt corrosion inhibitor and being different from the zinc salt corrosion inhibitor; (2) adding the reclaimed water to which the zinc salt corrosion inhibitor and the first corrosion inhibitor are added in the step (1) as replenishing water of recirculating cooling water into the recirculating cooling water of the recirculating cooling water system; and (3) adding a non-phosphorus scale inhibitor and a co-polymer scale-inhibiting dispersant into the recirculating cooling water to which the reclaimed water is added in the step (2). The method can effectively inhibit corrosion to the reclaimed water conveying pipelines and the recirculating cooling water system. When the reclaimed water is recycled as the recirculating cooling water, no phosphor corrosion inhibitor is needed to be added into the recirculating cooling water.

The invention relates to a method for treating and recycling circulating water and sewage, which comprises the following steps of: adding an oxidative bactericide and a catalyst into the sewage for chemical reaction, performing flocculation precipitation on reacted wastewater, adding wastewater subjected to flocculation precipitation into a membrane system for treating, and recycling recycled water subjected to membrane treatment to a circulating water system. Compared with the prior art, the method can effectively reduce the chemical oxygen demand (COD) of the wastewater, can reduce the content of bacteria in the wastewater, and meets the requirement of recycling the treated wastewater to the circulating water system.

The invention provides a boiler feedwater treatment method and a treatment system related to the reuse of reclaimed water. The treatment method comprises the following steps: (1) carrying out self-cleaning filtration on raw water with a conductivity of 500-1700muS / cm and then carrying out microfiltration, thus obtaining water with a fouling index being lower than 3, turbidity being equal to or lower than 0.05NTU and suspended solid concentration being smaller than 1mg / L; (2) carrying out pre-desalination through primary reverse osmosis and secondary reverse osmosis on the water obtained by microfiltration in step (1), thus obtaining water with the conductivity being smaller than 20muS / cm; and (3) by adopting a continuous electrodeionization method, carrying out deep desalination on the primarily desalinated water obtained by pre-desalination in step (2), thus obtaining desalinated water with conductivity being smaller than or equal to 0.2muS / cm. The treatment method is efficient and environment-friendly and has various advantages in the aspects of investment, operation and maintenance.

The invention discloses dyeing reclaimed water recycling process and equipment in a dyeing industry. With dyeing waste water subjected to secondary pretreatment as a water source, process water for dyeing production is obtained through biochemical materialized pretreatment and reverse osmotic treatment. With reverse osmotic device desalination as a center and multi-phase pump dissolving vapor, biological filtration, flocculating filtration, active carbon filtration and ion exchange as pretreatment, the invention effectively ensures quality of water and the service life of the equipment. The invention provides the follow-up reclaimed water recycling process and equipment for waste water treatment of the dyeing industry, and produced water is used as process water for dyeing production. The invention has the advantage of reasonable process design and simple and stable for operating, and a water discharged index can meet the water standard of the dyeing industry. The process performs active effects on aspects for saving water resource, saving energy, reducing emission, reducing operation cost and the like.

The invention relates to a control method for disinfection by-product based on matching of precursor form of disinfection by-product and flocculating agent form, belonging to drinking water processing technical field. The inventive method comprises following steps: selecting corresponding flocculating agent form having superior removing capability aiming at raw water with superior form distribution rule of different disinfection by-product precursors, using a matching relation of the flocculating agent original position form and the disinfection by-product superior form to greatly increase removing efficiency of the disinfection by-product precursors in a coagulation process under actions of compression of double electrode layers, charge neutrality, adsorption and surface complexation. The inventive method has advantages of high efficiency, economic and practicable performance and easy application in engineering, effectively strengthens generation of flocculating agent original position form in the coagulation process and significantly reduces generation of disinfection by-product in the chlorination process.The invention is mainly used for purifying drinking water from a polluted surface water source in a drinking water factory and is also used for secondary effluent advanced treatment in a sewage plant for reusing reclaimed water.

The invention discloses a method for reuse and treatment of casing processing wastewater, which comprises the following steps: adjusting the pH value of the casing processing wastewater to neutral or slightly alkaline; adding a flocculant to the wastewater for flocculation treatment, and taking the supernatant; The clear liquid is decolorized by adding activated carbon, and the filtrate is collected after plate and frame filtration; the filtrate is treated by ultrafiltration membrane ultrafiltration to collect the permeable liquid; the permeable liquid is treated by nanofiltration membrane nanofiltration, and the water quality of the permeable membrane reaches the level of reclaimed water Reuse requirements. The method of the present invention comprehensively treats casing processing wastewater through flocculation precipitation, activated carbon decolorization, ultrafiltration-nanofiltration treatment and other complete sets of processes, and makes the treated water quality meet the requirements of reclaimed water reuse, solving the problem of resource utilization of a large amount of casing processing wastewater problems, laying the foundation for energy saving and emission reduction in the casing processing industry.

The invention discloses an online detection method and device for building reclaimed water. The device is mounted in a reclaimed water recycling system and comprises an online residual chlorine detector and an online turbidity detector which are mounted in the same shell; the water inlets of the online residual chlorine detector and the online turbidity detector are communicated with a reclaimed water supply pipe respectively; the water outlets of the online residual chlorine detector and the online turbidity detector are communicated with a reclaimed water recycling pool through return pipes; a bypass pipe is connected between the water inlets of the online residual chlorine detector and the online turbidity detector and the reclaimed water supply pipe connected to the reclaimed water users; the online residual chlorine detector comprises a residual chlorine control chip the control signal output terminal of which is connected with the dosing pump of a chlorination disinfection device through a control signal wire; and the online turbidity detector comprises a turbidity control chip the control signal output terminal of which is connected with an alarm through a control signal wire. Through the invention, the problem that online detection equipment is currently unavailable for the building reclaimed water is solved, and the safe and stable reclaimed water supply can be ensured, thus the method and device provided by the invention are applicable to the reclaimed water systems of buildings and residential areas.

The invention discloses a zero-discharging technology in reclaimed water reuse. A biochemical water-discharging tank which is used for accommodating biochemically discharged water is arranged. An ultrafiltration device, a roll-type reverse osmosis membrane device, a super reverse osmosis membrane device and an evaporation device are successively arranged on the biochemical water-discharging tank.A clean water tank is connected to the roll-type reverse osmosis membrane device, the super reverse osmosis membrane device and the evaporation device. The invention discloses a super reverse osmosismembrane device which includes a circular tube pressure bearing outer shell, a metal sealing piece, a flange disk, a fluid reversing disk, a sealed circular tube pressure bearing inner shell, a waterdistributer, an inner pulling rod, a supporting and guiding disk, a membrane piece, a liquid inlet pipe and a liquid outlet pipe. The invention provides the zero-discharging technology in reclaimed water reuse, which can reduce energy consumption of sewage treatment and further reduce investment required in the sewage treatment. By means of the technology, a sewage treatment effect is improved anda zero-discharging requirement is achieved.

The invention relates to an integrated treatment process for reverse osmosis concentrated water in reuse of reclaimed water through a near-zero discharge membrane method. According to the invention, the reverse osmosis concentrated water in reuse of the reclaimed water undergoes supergravity-strengthened ozonation; after supergravity-strengthened ozonation, the obtained concentrated water undergoes softening treatment and then enters an ultrafiltration system; after reverse osmosis treatment, ultrafiltered osmosis liquid successively enters electrodialysis and membrane distillation systems for further concentration treatment; waters produced from reverse osmosis, electrodialysis and membrane distillation are delivered to a water supply system for reuse; and finally, concentrated liquid undergoes evaporative crystallization, so that salt slurry and condensate water are obtained, and the condensate water is delivered to the water supply system for reuse. The integrated treatment process provided by the invnetion adopts a supergravity-strengthened ozonation technology to couple with an advanced membrane integrated technology, so recycling rate of the reverse osmosis concentrated water is improved; meanwhile, near-zero discharge of the reverse osmosis concentrated water is realized; and the advantages of advanced process, high efficiency and stable and reliable effects are obtained.

The invention provides an advanced treatment method for coking wastewater. The steps of electrolysis, flocculation, advanced treatment, water draining and the like are used for treating the coking wastewater after being treated through a biological method. Waste water is heavy in color after being treated through a traditional biological treatment method, the COD concentration cannot meet the emission standard, and a small amount of phenols and cyanide are remained. The method effectively solves the boundedness of treating the coking wastewater through the biological method, the water quality of discharged water is stable, the water quality standard of reuse of recycled water is met, namely the water quality of urban wastewater reclamation and reuse and urban miscellaneous water (GB / T18920-2002), and the recycling of water resources is achieved.

The invention discloses a technique for treating sewage water to reclaimed water and the device thereof, the technique of which includes the following phases: flocculation and dosing phase, fiber filter phase, water distribution phase, integrated module system treatment phase and wine blending phase. The device includes a pipe-line mixer with sequential connection in series, micro eddy flocculation reacting clarification tank, a high effective fabric filter tank, a middle water tank, the integrated module system and a clean water tank. The invention has the advantages that the desalinization of the reverse osmosis device is taken as center, sequentially takes micro eddy flocculation, high effective fabric filtration and ultrafiltration as pretreatment and arranges an original water adjusting tank on the end to secure the stable operation of the reverse osmosis device. Employing mixed water scheme to effectively reduce the manufacturing price and operation cost. The technique provides the technique and the device of the recycling of recirculated cooling sewage water of power plant, the outlet water is taken as the replenishing water of recirculated cooling system of the power plant. The process has the advantages of reasonable design, simple operation and stable work, all the indexes of the outlet water can satisfy the recycling need which has a guiding and referencing meaning for reclaimed water recycling system.

The invention discloses a water recycling circulating system, which mainly comprises the treatment process that: sewage flows into a collector well 1 from a water inlet pipeline; larger suspended matters in the sewage are removed in a grid trench 2; the sewage flows into a regulating reservoir 4 and the water amount and quality of the sewage are regulated; the sewage is purified through a composite biofilter system 7 in a biofilter chamber 6; the treated water flows into a middle tank 8 for storage; and the stored water is subjected to subsequent treatment through an artificial wetland 9, namely the treated water is the recycled water for secondary use. Due to the adoption of the composite biofilter system 7, the water recycling circulating system overcomes the defects that the traditional biofilter is easily blocked and the like, greatly improves the treatment efficiency and stability of a reactor, and has the advantages of good treatment effect, low energy consumption, simple and convenient operation, low operating cost, and the like. The water quality of the treated recycled water can reach a national level of discharge standard, an aeration tank, a sedimentation basin, and the like in the traditional recycled water treatment system are saved, and the construction cost is saved.

The present invention provides intermediate water reusing technology with combined reactor system, and relates to domestic sewage treating and sludge reducing technology. The present invention features that expanding granular sludge bed anaerobic reactor and aerobic membrane bioreactor are combined to constitute one processing system for low concentration domestic sewage. The expanding granular sludge bed anaerobic reactor degrades the organic matter in domestic sewage effectively with short staying time and high volume load; and the membrane bioreactor eliminates the residual organic matter and ammonia nitrogen completely to make the effluent reach reused intermediate water standard. The combined processing system has small volume, low sludge yield and relatively high effluent quality.

The invention discloses a system and technology for reuse of printing and dyeing wastewater reclaimed water subjected to quality-based treatment. The process includes: (1) distributing conditioned printing and dyeing wastewater evenly in an oxygen-poor tank by a point-to-point water distributor, sending the oxygen-poor tank effluent water into a mud-film coupled oxygen-rich tank, conducting treatment, then sending the effluent water into a sedimentation tank to conduct sedimentation, then sending the sedimentation tank effluent water into a biological aerated filter to conduct treatment, and sending the effluent water into an intermediate water tank; and (2) subjecting one part of the water in the intermediate water tank to river water purifier and sodium ion exchange treatment, then reusing the water in flushing and color washing procedures of a printing and dyeing workshop; and subjecting the other part to sand filter filtration, ultrafiltration membrane filtration and reverse osmosis membrane filtration in order, and the reusing the water in the dyeing procedure of the printing and dyeing workshop. According to the invention, the printing and dyeing procedure is divided into a high quality water process and a low quality water process, and different water processes adopt different reclaimed water treatment technologies, thus bringing the technical characteristics of reclaimed water reuse into full play, saving energy consumption and improving the reuse rate of reclaimed water.

An ICAST method based on traditional SBR method for reclaiming the sewage in local social district includes such steps as regulating raw sewage in regulation pool, biochemical treating in ICAST reaction pool, flowing through intermediate pool, filtering in microfiltering pool, adding disinfectant, and disinfecting in the disinfecting pool. Its autocontrol and monitor equipment features that the electromagnetic flowmeter, water level relay, electromagnetic valve, and controller are connected with computer and the technological pavemeters can be automatically set up according to the quality and quantity of sewage and the DO value in ICAST reaction pool.

The invention belongs to the technical field of environment protection, and relates to a technical method for treating acidic wastewater generated during the production of silicon carbide. The technical method is characterized by comprising the technical steps of pretreatment and descending of high-concentration suspended matters, neutralization, flocculation and precipitation, sand filtration and primary advanced treatment, and ultrafiltration and secondary advanced treatment; water after ultrafiltration treatment with a UF is 6-9 in pH value, less than 10 mg / L in SS, and less than 10 mg / L in COD; the water is delivered to a clean circulation water tank to substitute new water and use as reuse water; water production rate is above 95%; concentrated water during the ultrafiltration is returned to an acidic wastewater adjusting tank. According to the invention, waste water with high-concentration suspended matters, of which the SS is more than 20000 mg / L can be treated; silicon carbide resource can be recycled directly; silicon carbide purity is guaranteed; reuse water with high quality is produced; construction investment and capital for upgrading are reduced; running cost is reduced; reuse of reclaimed water and sediment as resource is guaranteed; the sediment can be used as construction materials, decorative materials, environment-friendly materials and agricultural fertilizer improving soil.

The invention belongs to the technical field of drinking water treatment, and especially relates to an adsorption condensation method for removing natural organic matter in water by enhancing micro-interface adsorption. Based on coagulation technology, with the purposes of enhanced removal of natural organic matter and control of disinfection by-products, the invention provides a method for effectively removing natural organic matter in water by enhancing a micro-interface adsorption process and thus by the combined action of adsorption / condensation. The invention can effectively improve the removing effect of drinking water routine treatment processes on natural organic matter, and decrease the turbidity and oxygen consumption of settled water and filtered water. In addition, the invention can also improve the coagulation sedimentation effect on low turbidity water, low temperature water, low temperature low turbidity water, high organic pollution water, and decrease the turbidity and particle concentration of settled water. The invention is mainly applicable to purification in drinking water plants, and is also applicable to advanced treatment of secondary effluent in sewage plants with the purpose of reclaimed water reuse.

The invention provides a decolorizing method for fecal sewage and equipment. The equipment is composed of an automatic salt-feed device, negative and positive electrodes and direct current supply. The equipment is installed on an outlet conduit of purified fecal sewage, the direct current supply is connected with a power control device of up-feed pumps via lead wires, and the synchronous operation of decolorizing and water-feeding procedures is realized. The invention realizes the cyclic process of electrolyzation-oxidation decolorizing-reduction by employing the principle of electrolysis of common salt liquor, and the clearance rate of the colourity of the fecal sewage reaches above 99%. The decolorizing equipment is compact in structure, low in energy consumption and excellent in performance, and can be compatible with a sewage treatment and a reclaimed water reusing system. The decolorizing equipment not only can be applied to the circulating water treatment of biological environmental protection toilets, but also can be applied to district reclaimed water reusing system and water reusing system of sewage treatment plants, further can be applied to decolorizing of circulating water of large air conditioners and sterilization and algae killing for reducing the energy consumption of the air conditioners, and the decolorizing equipment has a wide application prospect in the fields of sewage treatment and reclaimed water reusing.

The invention discloses a recycled water reusing processing system. The system comprises a grating tank, an adjusting pond, a biological contact oxidation pond, a settlement pond, a water collecting pond, a sand filter, an active carbon filter and an ultraviolet light disinfecting pond which are sequentially communicated with one another along the flow direction of wastewater through a pipeline, wherein the grating tank is communicated with a wastewater drain pipe; and the water outlet of the ultraviolet light disinfecting pond is communicated with a recycled water reusing pipe network. The recycled water reusing processing system also comprises a sodium hypochlorite dosing device and a flocculant dosing device. A hair collector is arranged on the pipeline by which the water collecting pond and the sand filter are communicated. A pipeline mixture is arranged on a connection pipeline of the sand filter and the hair collector. Dosing pipelines are communicated with the pipeline mixture. A grating interval of the grating tank is 2mm, and the grating tank is a rotary mechanical grating cleaner. The recycled water reusing processing system has obvious effects that the system can completely process relatively clean wastewater, the reused water meets the reusing requirement, and the system is high in automation degree and can be controlled and managed automatically by a central controller, so that the shift of workers, the labor intensity and the like are reduced.

The invention discloses a river way water purification and water resource supply system as well as a working method of the system. The river way water purification and water resource supply system comprises a coagulation unit, a sedimentation basin, a sand filtering basin, an ultra filtering basin, a disinfecting basin and a water storing basin. The working method comprises the following steps that: river water flows through a diversion canal and lifted to a first coagulation reaction basin through a lifting pump; and meanwhile, a proper amount of an efficient coagulation composite purifier is added in a dry powder adding manner, and coagulation is carried out in the stage, so that the river water automatically flows into a second coagulation precipitation tank to carry out secondary coagulation to form a large flocculating constituent. After the flocculating constituent is formed, the flocculating constituent automatically flows into the inclined tube sedimentation basin to be settled, and then is discharged to the sand filtering basin. An ultra-filtering process section is added on the follow-up process; the ultra-filtered water is discharged to the disinfecting basin and is disinfected through liquid chlorine; the disinfected treated water enters the water storing basin and is used as water for a production process. With the adoption of the river way water purification and water resource supply system as well as the working method provided by the invention, the river way water is purified and meets a water recycling requirement, and can be directly supplied as a water resource, so that the energy conversion and the emission reduction of water major clients in the paper making industry, a textile printing industry and the like can be realized.

The invention discloses a reclaimed water recycling treatment technology, which is characterized in that circulating water sewerage is taken as raw water, the raw water is performed with ozone aeration treatment and then is introduced into a recycling water tank, then is oxidized and sterilized, ferrous ions in water body are oxidized to trivalent iron ions, and carbon dioxide in water body is removed. According to the reclaimed water recycling treatment technology, in the subsequent step of the reclaimed water recycling treatment technology, the water body is regulated to alkaline condition, carbon dioxide dissolved in the water body can be removed, so that generation of silica colloid or gel can be avoided or reduced, and thereby acidic intake water condition of a reverse osmosis membrane of a reverse osmosis apparatus used in the subsequent step of the reclaimed water recycling treatment technology can be satisfied, obstruction of the reverse osmosis membrane can be prevented, and usage life of the reverse osmosis membrane is prolonged.

The invention relates to a process and an apparatus for treating waste water in a medical waste disposal plant. The process is used to treat a variety of waste water respectively and comprises treatment of disinfection waste water produced in disinfecting and cleaning of vehicles and pass boxes, treatment of leachate of medical waste and domestic sewage, and treatment of waste water of a workshop, effluent of a sedimentation basin and primary rainwater. The apparatus for treating waste water comprises a disinfection waste water treating device, a medical waste leachate treating device and an in-depth treating device. According to the invention, waste water in a medical waste disposal plant is treated by respectively using a physicochemical treating process and a biochemical treating process, and reclaimed water is reused at the same time; the treating apparatus has the advantages of small investment, low operational cost, simple operation and saving of the water resource.

The invention belongs to the field of sewage treatment equipment, and particularly relates to a sewage treatment device. The sewage treatment device comprises a filtering pond and an adsorption gasifying pond, wherein the filtering pond is connected with the adsorption gasifying pond through a water outlet pipe; a water pump is arranged on the water outlet pipe; the filtering pond is divided into a grating chamber and a settling chamber by a partition; the grating chamber is arranged above the settling chamber and communicates with the settling chamber through a connecting tube; a water inlet tube is arranged above the grating chamber; a water inlet valve and a water flow meter are arranged on the water inlet tube; one end of the water outlet pipe extends into the settling chamber while the other end of the water outlet pipe extends into the top of the adsorption gasifying pond; the end, which extends to the adsorption gasifying pond, of the water outlet pipe is provided with a spraying rod; and a sprayer is arranged on the spraying rod. After being treated by the sewage treatment device, the sewage can reach the standard of reuse of reclaimed water, and the treatment effect is good.

The invention relates to a water reuse greenbelt watering device in a siphon type office building. The water reuse greenbelt watering device in the siphon type office building comprises a waste water collecting mechanism, a waste water storing tank and a watering mechanism connected with the waste water storing tank, wherein a drainage vertical pipe is connected between the waste water collecting mechanism and the waste water storing tank, a filter screen is arranged at the joint between the waste water storing tank and the drainage vertical pipe, a bracket is arranged below the waste water storing tank, the bottom of the waste water storing tank is provided with an escape pipe, the escape pipe is provided with a ball valve, a drainage siphon is arranged in the waste water storing tank, the part, which extends out of the waste water storing tank, of the drainage siphon is connected with the watering mechanism; the watering mechanism comprises a spray header pipe and a spray branch pipe; the spray header pipe is connected with the drainage siphon, the spray branch pipe is provided with the spray hole group. The water reuse greenbelt watering device in the siphon type office building is reasonable in design, simple in structure and easy to operate, the gravity is used as the motive power for spraying the water, the water is taken nearby, the waste is changed into the wealth, the energy is saved and the emission is reduced, and the time and the power are saved.

The invention provides an evaporation, concentration and recycling zero-discharge system for phosphating wastewater treatment. The evaporation, concentration and recycling zero-discharge system for phosphating wastewater treatment comprises a phosphating and washing system, a phosphating wastewater treatment system, a reclaimed water recycling evaporation system and an RO treatment system. Phosphatization wastewater is subjected to three times of water washing through the phosphatization water washing system, after water washing, the wastewater is discharged out of the water tank through an overflow port and enters the phosphatization wastewater treatment system, the phosphatization wastewater treatment system is used for removing heavy metal ions and phosphate ions in the wastewater to obtain reclaimed water, a solution in the reclaimed water recycling box enters the evaporator through a guide pipe to be evaporated and concentrated, condensate water from the evaporation part is discharged into a condensate water tank, concentrated water permeated out of a primary reverse osmosis system and a secondary reverse osmosis system in the RO treatment system is discharged into the concentrated water collecting tank, evaporation continues to be conducted through the evaporator, and closed-loop circulation is completed.

The invention discloses an integrated system used for recycling reclaimed water and based on an intelligent combined pool. The integrated system comprises a purification tank, a filtering tank and a water storage tank, wherein the outer surfaces of the purification tank, the filtering tank and the water storage tank are fixedly connected with bottom columns, the purification tank is internally provided with a mixing mechanism, the filtering tank is internally provided with a filtering mechanism, a conveying mechanism is arranged between the purifying tank and the filtering tank, and the mixing mechanism comprises a driving motor and an air cylinder. The invention belongs to the technical field of recycling of reclaimed water. According to the integrated system used for recycling reclaimed water and based on the intelligent combined pool, the mixing mechanism is arranged, the driving motor is used for driving a driving rotating shaft to rotate, so a scraping plate and a stirring plate on the outer surface of a push rod synchronously rotate; and the air cylinder is matched for use to drive the push rod to move, so sewage can be fully mixed during purification, sludge on the inner walls of the tanks can be cleaned, and sewage cleaning and purifying efficiency is improved.

The invention relates to a rural domestic sewage classification treatment system, and belongs to the technical field of sewage treatment. The system comprises a three-stage septic tank system, a filtration and regulation system, an immersed bio-filter and a subsurface flow constructed wetland system, the three-stage septic tank system is connected with a toilet to introduce black water, the blackwater is subjected to anaerobic fermentation in the three-stage septic tank system, is transferred through a manure passing pipe, and flows into a sewage pipe through a connecting pipe after being converged with grey water in kitchens, the mixed sewage is conveyed through the sewage pipe, goes through a grating well and flow into a regulating tank, the mixed sewage in the regulating tank is pumpedinto the immersed bio-filter through a submersible sewage pump and is treated by activated sludge, the treated water flows into the constructed wetland system, and the water in the constructed wetland flows into a water collecting channel from an adjustable water outlet. The rural domestic sewage can be treated in a classified mode, the black water can be treated to fertilize lands, and the greywater can be directly discharged or recycled after being purified; and the rural domestic sewage classification treatment system has the advantages of simple structure, and convenience in maintenance.

The invention discloses a rural black and grey water collection, treatment and resource utilization system. The system comprises a household miscellaneous drainage collecting pipe, a household toiletflushing water collecting pipe and a breeding excrement water collecting pipe, and is characterized in that the miscellaneous drainage collecting pipe is connected with the upper part of an oil-separating deslagging well, the bottom of the oil-separating deslagging well is connected with a grey water treater through a grey water main pipe, and reclaimed water is recycled after water in the grey water treater is treated, the household toilet flushing water collecting pipe is connected with a black water treater through a black water main pipe, the black water treater is connected with a black water advanced treatment device through a pipeline, the breeding excrement water collecting pipe is directly connected with the black water advanced treatment device, and liquid treated by the black water advanced treatment device is output through a submersible pump to be used as fertilizer. The construction period is short, and civil engineering investment is saved by adopting the carbon steel anti-corrosion square tank body or the glass fiber reinforced plastic tank body.

The invention discloses a disposable butyronitrile glove production sewage treatment and reclaimed water recycling system comprising a mechanical grill, an adjusting tank, an air floating machine, a mixing adjusting tank, an ozone oxidation tank, a hydrolysis acidification tank, an a / O / a treatment tank, a reaction tank, a secondary sedimentation tank, a filter tank, a sludge tank, a sludge concentration tank and an emergency tank; through use of the disposable butyronitrile glove production sewage treatment and reclaimed water recycling system, the wastewater is disinfected, filtered, desaltedand the like, the sewage discharge amount is reduced, the purpose of recycling reclaimed water is achieved, and the emission of industrial sewage is reduced, so that a lot of new water is saved, andthe consumption of water resources is reduced.