173 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 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 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 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 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 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.

The invention discloses an ammonia-nitrogen wastewater resourceful treatment system and a treatment method of the ammonia-nitrogen wastewater resourceful treatment system. The ammonia-nitrogen wastewater resourceful treatment system comprises a water collection tank, a buffering tank, an adjusting kettle, a first buffering tank, an MVR evaporation system, an adjusting tank, an adsorption system, a second buffering tank and an ammonia-nitrogen removing system, which are connected in sequence, wherein each of the water collection tank, the buffering tank, the adjusting kettle, the first buffering tank, the MVR evaporation system, the adjusting tank, the adsorption system, the second buffering tank and the ammonia-nitrogen removing system is provided with an inlet and an outlet. The ammonia-nitrogen wastewater resourceful treatment system has the advantages of concise pre-treatment device, small occupied area, convenience for operation, sanitary working environment, good purification effect, no secondary pollution and small solid waste output, and can be used for efficiently recycling ammonia-nitrogen resources in wastewater in an ammonium salt form; output water of the system can be reused as reclaimed water.

The invention discloses a system for treating antimony-containing printing and dyeing sewage. The system mainly comprises a regulating tank, a cooling tower, a primary sedimentation tank, an aerobic tank, a second sedimentation tank, an immersing-type ultrafiltration MCR tank, a reverse osmosis membrane system, a final sedimentation tank and an outer drainage tank which are used for collecting theprinting and dyeing sewage and connected sequentially through pipelines, wherein a PAC agent is added into the primary sedimentation tank so as to perform a flocculation reaction, and microorganismsare adsorbed in the aerobic tank; after sedimentation, the treated sewage is discharged from a sludge treatment system, so that the total amount of antimony in the sewage is reduced, and the application amount of a PAFC reagent which is used in a terminal process of mixing and sedimentation; RO concentrate is generated through the immersing-type ultrafiltration MCR tank and the reverse osmosis membrane system so as to achieve the concentration and enrichment of the antimony element and thus reduce the amount of sewage for antimony removing treatment, so that the efficiency of utilization of the PAFC reagent is improved, the generated RO clean water can be reused in a workshop, and therefore requirements for the reuse of reclaimed water by a printing and dyeing company are met.

The invention discloses a sewage reuse system and a sewage treatment method. The sewage reuse system comprises a sewage treatment system and a reclaimed water reuse system, wherein the sewage treatment system comprises a primary water treatment system and a secondary water treatment system, the primary water treatment system is used for treating domestic produced sewage to form wastewater and reuse water, and the secondary water treatment system is used for treating the reuse water to form residential domestic water and reclaimed water; and the reclaimed water reuse system is used for conveying treated waters from the sewage treatment system to different use occasions according to the quality of waters. The treatment method comprises the following steps: treating the domestic production sewage by the primary treatment system to form wastewater and reuse water, and treating the reuse water to obtain domestic water consumption standard reaching water used as the residential domestic water and domestic water consumption standard unreaching water used as the reclaimed water. The above technical scheme alleviates the shortage of water resource and the pressure of pollution discharge and environmental protection.