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31results about How to "Meet the requirements of effluent water quality" patented technology
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Denitrified sewage treatment device and treatment method for artificial wetland
ActiveCN104291445ASolve the problem that the release cannot be effectively controlledReasonable use of resourcesWater contaminantsTreatment with anaerobic digestion processesConstructed wetlandMedicine
The invention discloses a denitrified sewage treatment device for an artificial wetland. The device comprises a sewage treatment pond. The sewage treatment pond comprises a denitrification layer (3) and a soil layer (4), wherein the soil layer (4) is arranged above or below the denitrification layer (3); the length of the sewage treatment pond is greater than or equal to 1m and the length-width ratio is greater than or equal to 3; the sewage treatment pond is provided with a water inlet and a water outlet; plants are planted on the soil layer (4); and the denitrification layer (3) consists of sulfur particles, plant stem and leaf fragments and gravels. The invention further discloses a denitrified sewage treatment method. The denitrified sewage treatment device disclosed by the invention has the advantages of low cost and good denitrification effect of sewage.
Owner:CHINESE RES ACAD OF ENVIRONMENTAL SCI
Cold-tolerant pseudomonas strain Den-05, and screening method and application thereof
ActiveCN102776140AImprove denitrification effectAchieve preparationTreatment using aerobic processesBacteriaBioaugmentationLaboratory culture
A cold-tolerant pseudomonas strain Den-05 belongs to the technical field of the biological engineering and environmental engineering, and is Pseudomonas psychrophilia Den-05, which is preserved in China General Microbiological Culture Collection Center (CGMCC) on March 27, 2012 with the preservation number of CGMCC NO.5942. Low-temperature aerobic denitrifying bacteria Pseudomonas psychrophilia Den-05 is screened from the natural environment by a microbial pure culture technique, so that the preparation of a biological denitrifying bacterial agent is realized and a high-efficiency denitrifying bacterial agent is provided for a biological enhancement system; besides, the winter denitrification effect of an urban sewage plant is improved in the control and regulation way of shortening the period of aeration by shortening the anaerobic period and the removal of nitrate nitrogen under the aerobic condition is realized; as a result, the water quality discharged is capable of meeting the requirements.
Owner:HIT YIXING ACAD OF ENVIRONMENTAL PROTECTION
Membrane treatment method for treating trace antimony in drinking water
ActiveCN101973651AExtended service lifeImprove qualityWater/sewage treatment bu osmosis/dialysisMultistage water/sewage treatmentChemistryNanofiltration
A membrane treatment method for treating trace antimony in drinking water comprises the following basic processes: after pre-precipitating and sterilizing pumped antimony-containing source water in a sterilization buffer pool, coagulating the source water in a coagulation pool and precipitating the source water in a precipitation pool, pressurizing the source water by a primary booster pump, filtering the source water by a multi-media filter and a precision filter, pressurizing the source water by a secondary booster pump and the sending the source water to a membrane treatment system to be treated. Nanofiltration or reverse osmosis membrane separation equipment is adopted for membrane separation, cross filtration technology is adopted for membrane filtration and physical cleaning and chemical cleaning are combined for cleaning the membrane separation equipment. Adopted for treating the drinking water contaminated by antimony, the membrane technology has high degree of automation, is mature and stable and ensures the energy consumption to be not more than 0.4kwh / m3, the working pressure of the membrane to be (0.15-0.75)MPa and the service life of the membrane to be not less than 3 years. When the content of antimony in the source water is (5-100)mu g / L, the content of the heavy metal antimony in the product water (permeate) after separation treatment is not more than 5mu g / L (GB5749-2006) and the contents of lead, mercury, arsenic and other heavy metals and pesticide residues in the tap water are simultaneously lowered, thus obviously promoting the water quality.
Owner:湖南恒辉膜科技有限公司
Nitrogen and phosphorus removal integrated biological reaction tank operating in multiple modes
ActiveCN105110467ASmall footprintReduce in quantityTreatment with aerobic and anaerobic processesRefluxLoad resistance
The invention discloses a nitrogen and phosphorus removal integrated biological reaction tank operating in multiple modes. The biological reaction tank comprises a biological selection zone, a pre-anoxic zone, a main reaction zone, a water distribution zone, a water outlet zone and an internal reflux channel, wherein the main reaction zone comprises a zone A, a zone B and a zone C; the zone A can serve as an anaerobic zone or an anoxic zone during operation; the zone B and the zone C can serve as aerobic zones and can also serve as anaerobic zones or anoxic zones during operation; the biological selection zone is arranged on the forepart of the reaction tank; the pre-anoxic zone is arranged behind the biological selection zone; the water distribution zone is arranged among the zone A, the zone B and the zone C; and the water outlet zone is arranged between the zone B and the zone C and is connected with the water distribution zone by the internal reflux channel. The nitrogen and phosphorus removal integrated biological reaction tank operating in multiple modes, which is provided by the invention, has the advantages that the biological reaction tank has the characteristics of intensification, small floor area and small quantity of equipment and can alternately operate in multiple modes; and the modes are switched freely and flexibly, so that impact load resistance is ensured and efficient biological nitrogen and phosphorus removal can be achieved under the condition that the inflow water quality changes more substantially.
Owner:SHANGHAI MUNICIPAL ENG DESIGN INST GRP
Sequencing batch type combined biofilm integrated apparatus for treating high concentration organic wastewater
InactiveCN1699219ABig reaction forceShock load resistant and adaptableTreatment with aerobic and anaerobic processesSustainable biological treatmentPropellerChemistry
The invention discloses a sequencing batch type combined biofilm integrated apparatus for treating high concentration organic wastewater, wherein a tank body is provided with two submerged biological film reaction zones, the center of the tank body is an anaerobic submerged biological film reaction zone, the periphery of the tank body is an aerobic submerged biological film reaction zone, the anaerobic submerged biological film reaction zone is closed, the two reaction zones are provided with half-soft fiber fillings internally and a a underwater propeller on the bottom, the packing of the anaerobic submerged biological film reaction zone is provided with a underwater aeration apparatus on the bottom.
Owner:CHONGQING UNIV
Anti-floating filter plate of upward flow suspension filter material filter pool and preparation and installation method thereof
ActiveCN105688497AEasy to fixFixed shortcutMembrane filtersStationary filtering element filtersWater leakageEngineering
The invention relates to a preparation and installation method of an anti-floating filter plate of an upward flow suspension filter material filter pool. The method is characterized by comprising the steps of assembling a mold to prepare the anti-floating filter plate and installing the anti-floating filter plate. The anti-floating filter plate comprises an anti-floating filter plate body of a rectangular reinforcing steel bar concrete plate structure. Upper and lower rabbets are formed at the opposite ends of the two side ends of the anti-floating filter plate. The cross section of the upper rabbet is in a dovetail groove shape, the cross section of the lower rabbet is in a dovetail shape matched with the dovetail groove shape of the upper rabbet, and two adjacent anti-floating filter plate bodies form a dovetail type plate slot through engagement of the upper and lower rabbets; a plurality of filter head sleeves are preformed in the axial direction of the anti-floating filter plate. The anti-floating filter plate has the advantages that the rabbet structure is adopted, the problem that formwork supporting is difficult in the plate slot construction process is solved, and the problems of water leakage, material leakage, difficult pouring and difficult formwork supporting are solved; the anti-floating effect is well achieved by taking full advantage of the weight of the anti-floating filter plate and the pressure relief effect of filter holes.
Owner:中国市政工程西北设计研究院天津分院
Synergistic treatment device for degradation-resistant organic waste water and method thereof
InactiveCN105502772AImplement deep processingMeet the requirements of effluent water qualityWater/sewage treatment with mechanical oscillationsWater contaminantsChemical reactionElectrolysis
The invention discloses a synergistic treatment device for degradation-resistant organic waste water and a method thereof, and belongs to the field of waste water treatment. The synergistic treatment device comprises a primary microwave waste water treatment unit and a secondary ultrasonic wave and electrocatalytic oxidation synergistic waste water treatment unit. In the microwave waste water treatment unit, primary waste water treatment is realized through physical and chemical reactions between microwaves and pollutants, the waste water obtained after microwave treatment enters the ultrasonic wave and electrocatalytic oxidation synergistic waste water treatment unit, on the premise that the waste water quality is improved by microwaves and conditions suitable for secondary treatment are created, secondary treatment on the waste water pollutants is achieved by means of strong-oxidizing free radicals synergistically generated by ultrasonic waves and electrocatalytic oxidation, and continuity of secondary treatment and high efficiency of electric energy utilization are ensured through an electrode surface layer clearing function of the ultrasonic waves. Secondary pollution is avoided in the whole waste water treatment process.
Owner:杭州科瑞特环境技术有限公司
Enhanced nitrogen and phosphorus removal integrated constructed wetland system
ActiveCN105036345ARealize resource utilizationLow costSustainable biological treatmentBiological water/sewage treatmentConstructed wetlandNitrogen removal
The invention discloses an enhanced nitrogen and phosphorous removal integrated constructed wetland system. The system is a surface flow wetland, and comprises an emergent aquatic plant wetland (1) and a submerged plant wetland (2) which are sequentially arranged along the water flow direction, wherein the emergent aquatic plant wetland (1) comprises an enhanced nitrogen removal medium layer and a shallow-water surface (3) arranged at the upper part of the enhanced nitrogen removal medium layer; emergent aquatic plants (4) are planted in the enhanced nitrogen removal medium layer; the submerged plant wetland (4) comprises an enhanced phosphorous removal medium layer and a deep-water layer (6) arranged at the upper part of the enhanced phosphorous removal medium layer; and submerged plants (5) are planted in the enhanced phosphorous removal medium layer. The enhanced nitrogen and phosphorous removal integrated constructed wetland system can be used for realizing sewage treatment synchronously, efficiently and economically.
Owner:CHINESE RES ACAD OF ENVIRONMENTAL SCI
Sewage low-carbon biological treatment system self-adaptive to water quality change and method thereof
ActiveCN114644434AFlexible and convenient switchingMeet the requirements of effluent water qualityWater contaminantsTreatment involving filtrationSludgeMonitoring system
The invention discloses a sewage low-carbon biological treatment system and method self-adaptive to water quality change. The sewage low-carbon biological treatment system comprises a sludge concentration fermentation tank, a rectangular water inlet box culvert, a multifunctional tank, a biological reaction tank, an external reflux sludge channel, a secondary sedimentation tank and an effluent quality online monitoring system, the two sides of the rectangular water inlet box culvert are each connected with one multifunctional pool, and the two sets of multifunctional pools are rectangular. A sludge concentration fermentation tank is arranged on one side of the multifunctional tank, the other side of the multifunctional tank is connected with the biological reaction tank, an overrunning box culvert is arranged between the multifunctional tank and the biological reaction tank, and the water inlet end of the overrunning box culvert is connected with a water outlet port of a rectangular water inlet box culvert; the water outlet end of the biological reaction tank is connected with the secondary sedimentation tank; an outer return sludge channel is arranged on one side of the water distribution channel of the secondary sedimentation tank and extends to surround the peripheries of the biological reaction tank, the multifunctional tank and the sludge concentration and fermentation tank. The invention solves the technical problem that the matrix metabolism balance of the biological treatment system is difficult to realize when the water quality is unstable.
Owner:TONGJI UNIV +1
Water purifier, water purification system and water quality adjusting method
PendingCN114409108AMeet the requirements of effluent water qualitySpecific water treatment objectivesTreatment involving filtrationStream flowWastewater
The invention relates to the technical field of water purification equipment, in particular to a water purifier, a water purification system and a water quality adjusting method. The water purification system comprises a water inlet channel, a filtering channel, a water outlet channel, a wastewater channel, a booster pump, a regulating valve, an inlet water quality detection unit and an outlet water quality detection unit. The composite filter element comprises at least two filter element units connected in parallel, the opening degree of the adjusting valve is adjustable, the adjusting valve is suitable for adjusting the flow of the corresponding filter element unit, the inlet water quality detection unit is arranged on the upstream of the composite filter element, and the outlet water quality detection unit is arranged on the water outlet channel and used for detecting the water quality. According to the water purification system provided by the invention, the inlet water quality detection unit and the outlet water quality detection unit are arranged, if the outlet water quality does not reach the standard, the detection result of the outlet water quality detection unit can be fed back, and the control unit can adjust the opening degree of the adjusting valve according to the detection result of the outlet water quality detection unit; therefore, the water in the water outlet channel meets the water quality requirement of the outlet water.
Owner:FOSHAN MIDEA CHUNGHO WATER PURIFICATION MFG +1
Constructed wetland denitrification sewage treatment device and sewage treatment method
ActiveCN104291445BSolve the problem that the release cannot be effectively controlledReasonable use of resourcesWater contaminantsTreatment with anaerobic digestion processesConstructed wetlandPlant stem
Owner:CHINESE RES ACAD OF ENVIRONMENTAL SCI
Deep treatment method of petrochemical engineering organic wastewater difficult to biodegrade
InactiveCN107235603AAchieve decolorizationAchieve degradabilityWater contaminantsMultistage water/sewage treatmentDecompositionFixed bed
The invention discloses a deep treatment method of petrochemical engineering organic wastewater difficult to biodegrade. Secondary treatment effluent of a petrochemical engineering sewage treatment device is treated with a catalytic ozonation and integrated biological filter combination technology, and the method specifically comprises the steps as follows: a coagulant and a coagulant aid are added to secondary treatment effluent for a precipitation reaction; then the sewage enters an ozonation reactor and is subjected to an oxidation reaction with ozone under the action of fixed bed catalytic filler, and the purposes of decolorizaiton and organic matter decomposition are achieved; finally, a high-load biological filter procedure and a variable-pore filter procedure are performed through an integrated biological filter, and after the sewage is treated by biological membranes attached to and growing on the surface of biological filter filler and is filtered by variable-pore filler, biodegradable organic matter in ozone decomposed water can be removed. The method is simple in process and convenient to operate, emission of pollutants in the petrochemical engineering sewage can be effectively reduced, the effluent quality requirement of existing secondary treatment process upgrading and reconstruction is met, and the economic benefit is increased.
Owner:CEEP CO LTD
Sewage treatment device with multi-mode operation
PendingCN112794435ASmall footprintReduce in quantityTreatment using aerobic processesTreatment with aerobic and anaerobic processesWater treatment systemSludge
The invention discloses a sewage treatment device with multi-mode operation, and belongs to the field of sewage treatment systems. Four groups of fixed tank bodies are arranged in parallel, and a fixed flow guide wall, a movable flow guide device, an aeration device and the like are respectively arranged at two ends of each group of fixed tank bodies. The volume distribution of different reaction tanks can be realized by the movable flow guide device, so that the optimal nitrogen and phosphorus removal treatment effect is achieved. Aeration devices are distributed on the whole tank body, and whether aeration of each area is started or not is controlled through valves on the aeration devices, so that the aerobic / anoxic / anaerobic state is realized. A step-feed multi-stage A / O operation mode is adopted, so that biological denitrification is enhanced, a carbon source in sewage is utilized to the greatest extent, internal reflux is not needed, and energy consumption is reduced. The system sludge concentration is higher than that of a traditional biochemical pool. Multiple modes can be alternately operated according to the water quality condition, and the number of the alternate operation modes can be as high as 7; the operation modes are diversified, switching is flexible and convenient, and the system can adapt to great changes of inflow water quality and meet the requirements of outflow water quality.
Owner:北京安国水道自控工程技术有限公司
Cold-tolerant pseudomonas strain Den-05, and screening method and application thereof
ActiveCN102776140BAchieve preparationAchieve removalBacteriaTreatment using aerobic processesWater qualityScreening method
A cold-tolerant pseudomonas strain Den-05 belongs to the technical field of the biological engineering and environmental engineering, and is Pseudomonas psychrophilia Den-05, which is preserved in China General Microbiological Culture Collection Center (CGMCC) on March 27, 2012 with the preservation number of CGMCC NO.5942. Low-temperature aerobic denitrifying bacteria Pseudomonas psychrophilia Den-05 is screened from the natural environment by a microbial pure culture technique, so that the preparation of a biological denitrifying bacterial agent is realized and a high-efficiency denitrifying bacterial agent is provided for a biological enhancement system; besides, the winter denitrification effect of an urban sewage plant is improved in the control and regulation way of shortening the period of aeration by shortening the anaerobic period and the removal of nitrate nitrogen under the aerobic condition is realized; as a result, the water quality discharged is capable of meeting the requirements.
Owner:HIT YIXING ACAD OF ENVIRONMENTAL PROTECTION
High-efficiency bioflocculant producing bacterium, screening method thereof and application of high-efficiency bioflocculant producing bacterium in treatment of sulfamethoxazole
InactiveCN102876600BAchieve preparationPreparation to reachBacteriaWater contaminantsActivated sludgeScreening method
The invention discloses a high-efficiency bioflocculant producing bacterium, relates to removal of a trace amount of pollutants which are produced in the city water supply and sewage treatment processes, and solves the problems of low yield of bioflocculant, low artificial regulation performance and single treatment substrate. A screening method comprises the following steps of: domesticating activated sludge of a municipal sewage plant in the Harbin, and enriching biological bacteria, diluting and culturing by using a shake flask, performing plate streaking, separating and purifying biological bacterium species, and repeatedly performing three-area streaking for multiple times to obtain the pure bioflocculant producing bacterial strain KlebsiellaSp.. By the bacterial strain, the removal rate of a trace amount of pollutants in municipal sewage can reach 67.82 percent. By the high-efficiency bioflocculant producing bacterium, the removal rate of a trace amount of pollutants in the municipal sewage is improved, and energy consumption in production is reduced.
Owner:江苏哈宜环保研究院有限公司
Magnetic collagen modified cationic flocculant and preparation method thereof
ActiveCN104341035ATake advantage ofSolve the emission problemWater/sewage treatment by flocculation/precipitationFlocculationResource utilization
The invention relates to a magnetic collagen modified cationic flocculant and a preparation method thereof. The magnetic collagen modified cationic flocculant is mainly prepared by combining a magnetic fluid with waste tanning collagen which is taken as a raw material. The magnetic collagen modified cationic flocculant has the beneficial effects that a magnetic material is applied to preparation of the flocculant, and a solid and liquid separation effect of a flocculation process is enhanced by the effect of a magnetic field, and thus the quality of water discharged after the flocculation process is improved, the water treatment running cost is lowered, and water content of floccules is reduced. Resource utilization of tanning wastes is realized, and pollutant emission caused by tanning is reduced. A magnetic collagen hydrolysis product is subjected to graft copolymerization and cationic modification, and a modified product has good flocculent properties. The magnetic collagen modified cationic flocculant is easy to degrade by microorganisms in environment, short in existence time in the environment and low in residual quantity.
Owner:QILU UNIV OF TECH
Purification treatment system for tail water of sewage plant and construction method of purification treatment system
PendingCN113149219AEfficient removalGuaranteed emission standardsSpecific water treatment objectivesWater contaminantsConstructed wetlandWater quality
The invention discloses a purification treatment system for tail water of a sewage plant and a construction method of the purification treatment system, which belong to the technical field of comprehensive treatment of water environments, and solve the problems of high investment and operation cost, secondary pollution and unsatisfactory purification in the existing tail water treatment mode. The system comprises a water distribution well and a constructed wetland; an aeration device and a submersible sewage pump are arranged in the water distribution well; the output end of the submersible sewage pump is connected with a first water distribution pipe; the first water distribution pipe leads to the constructed wetland; a floral pipe is arranged at the bottom of the constructed wetland and communicated with a water collecting well; the upper portion of the water collecting well is connected with a water outlet pipe; a control valve is arranged on the water outlet pipe;water quality detection equipment is arranged at the front end of the control valve on the water outlet pipe; a submersible pump is arranged in the water collecting well; the output end of the submersible pump is connected with a second water distribution pipe; a nozzle is arranged above the constructed wetland and connected with the second water distribution pipe; and the control valve and the submersible pump are respectively connected with the water quality detection equipment. The system has the advantages of good purification effect, low investment and operation cost, no secondary pollution and high automation degree.
Owner:中国市政工程西北设计研究院有限公司
Method for removing nitrates in water by floc resin formed by reconstruction of powder resin
ActiveCN110627180ATo achieve the purpose of removing nitrateAchieve removalWater/sewage treatment by flocculation/precipitationFlocculationNitrate
The invention discloses a method for removing nitrates in water by a floc resin formed by reconstruction of a powder resin. The method comprises the following steps: the nitrate content in water is detected; if the nitrate content exceeds the standard, a coagulant is added to a flocculation tank and the powder resin is simultaneously added to reconstitute the coagulant and the powder resin to formthe resin floc; and the nitrates in the water are adsorbed by the resin floc in a precipitation tank, and after reaching adsorption saturation, the resin floc settles to the bottom of the tank to remove the resin floc from the water. Any equipment is not needed to add, when sudden nitrate exceeding the standard happens, treatment equipment of an original water plant is used, removal of the nitrates can be realized by adding the powder resin and increasing an addition amount of the coagulant in the water plant, and water quality requirements for outlet water are met.
Owner:SHANDONG JIANZHU UNIV
A method for treating sewage using an integrated biological reaction tank operating in multiple modes
ActiveCN105110468BSmall footprintReduce in quantityTreatment with aerobic and anaerobic processesCell selectionWater quality
The invention discloses a method for treating sewage by using an integrated biological reaction pool operated in multiple modes. The reaction zone includes zone A, zone B and zone C; zone A can be used as an anaerobic zone or anoxic zone during operation, and zones B and C can be used as aerobic zone or anaerobic zone or anoxic zone during operation. The biological selection area is located at the front of the reaction tank, followed by a pre-anoxic area, the water distribution area is located between areas A, B, and C, the outlet area is located between areas B and C, and the inner return channel connects the outlet area and water distribution area. The method for treating sewage with an integrated biological reaction tank using multi-mode operation provided by the present invention has the characteristics of intensification, small footprint, and a small number of equipment, and it can also operate in multiple modes alternately, with free and flexible mode switching, impact load resistance, and In the case of large changes in influent water quality, high-efficiency biological nitrogen and phosphorus removal can be achieved.
Owner:SHANGHAI MUNICIPAL ENG DESIGN INST GRP
Method for Reconstructing Powder Resin to Form Floc Resin to Remove Nitrate in Water
ActiveCN110627180BTo achieve the purpose of removing nitrateAchieve removalWater/sewage treatment by flocculation/precipitationFlocculationNitrate salts
The invention discloses a method for removing nitrates in water by a floc resin formed by reconstruction of a powder resin. The method comprises the following steps: the nitrate content in water is detected; if the nitrate content exceeds the standard, a coagulant is added to a flocculation tank and the powder resin is simultaneously added to reconstitute the coagulant and the powder resin to formthe resin floc; and the nitrates in the water are adsorbed by the resin floc in a precipitation tank, and after reaching adsorption saturation, the resin floc settles to the bottom of the tank to remove the resin floc from the water. Any equipment is not needed to add, when sudden nitrate exceeding the standard happens, treatment equipment of an original water plant is used, removal of the nitrates can be realized by adding the powder resin and increasing an addition amount of the coagulant in the water plant, and water quality requirements for outlet water are met.
Owner:SHANDONG JIANZHU UNIV
Preparation method of anti-floating filter plate and anti-floating filter plate of upward flow suspension filter material filter tank
ActiveCN105688497BEasy to fixFixed shortcutMembrane filtersStationary filtering element filtersWater leakageFiltration
Owner:中国市政工程西北设计研究院天津分院
Advanced treatment method of refractory organic wastewater in sewage treatment plant of fine chemical industry park
ActiveCN103613254BHigh removal rateImprove reaction efficiencyMultistage water/sewage treatmentWater/sewage treatment by oxidationWater qualityCatalytic oxidation
The invention belongs to the field of sewage treatment, and in particular relates to a method for deep treatment of refractory organic wastewater of a sewage treatment plant in a fine chemical industry park, which carries out deep treatment on secondary refractory treatment discharged water of the sewage treatment plant in the fine chemical industry park through a combined process of ozone catalytic oxidation and a biological aerated filter. With the method disclosed by the invention for processing secondary refractory treatment discharged water of the sewage treatment plant in the fine chemical industry park, the reaction efficiency in the ozone oxidation process is improved and biodegradability of the sewage is improved under economic dosage of the ozone; through treatment by the biological aerated filter adopting a low-energy consumption operation mode, chemical oxygen demand (COD) in the process discharged water can meet level-I B standard of chemical oxygen demand (COD) provided within Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB18918-2002), and can satisfy effluent quality demand of existing secondary treatment process upgrading and reconstruction in the sewage treatment plant of the park under pollutant reduction and total amount control requirements.
Owner:CENT & SOUTHERN CHINA MUNICIPAL ENG DESIGN & RES INST CO LTD
An integrated constructed wetland system for enhanced nitrogen and phosphorus removal
ActiveCN105036345BRealize resource utilizationLow costSustainable biological treatmentBiological water/sewage treatmentConstructed wetlandNitrogen removal
The invention discloses an enhanced nitrogen and phosphorous removal integrated constructed wetland system. The system is a surface flow wetland, and comprises an emergent aquatic plant wetland (1) and a submerged plant wetland (2) which are sequentially arranged along the water flow direction, wherein the emergent aquatic plant wetland (1) comprises an enhanced nitrogen removal medium layer and a shallow-water surface (3) arranged at the upper part of the enhanced nitrogen removal medium layer; emergent aquatic plants (4) are planted in the enhanced nitrogen removal medium layer; the submerged plant wetland (4) comprises an enhanced phosphorous removal medium layer and a deep-water layer (6) arranged at the upper part of the enhanced phosphorous removal medium layer; and submerged plants (5) are planted in the enhanced phosphorous removal medium layer. The enhanced nitrogen and phosphorous removal integrated constructed wetland system can be used for realizing sewage treatment synchronously, efficiently and economically.
Owner:CHINESE RES ACAD OF ENVIRONMENTAL SCI
Method for removing low-concentration Pb (II) by combining heavy metal absorbent LAC/PAA with traditional water treatment process
ActiveCN110304680AConvenient for emergency dosingImprove efficiencyWater contaminantsMultistage water/sewage treatmentActivated carbonChemistry
The invention discloses a method for removing low-concentration Pb (II) by combining a heavy metal absorbent LAC / PAA with a traditional water treatment process. A low-cost heavy metal removal absorbent (LAC / PAA) is prepared, and compared with activated carbon for a common water purification plant (pH= 6-10), the surface acidic groups of LAC / PAA are increased (pH= 4.8), so that the function of absorbing and removing heavy metals is fulfilled. Aiming at raw water polluted by Pb(II), the water quality of raw water polluted by Pb (II) is analyzed firstly. If Pb (II) is less than or equal to 50 mug / L, LAC / PAA adsorption is used directly to meet the requirements of WHO water quality standard. If 50 mu g / L (Pb (II) is less than 300 mu g / L, the heavy metal absorbent LAC / PAA needs to be combinedwith with the traditional water process; the adsorbent is used for water treatment, so that actual factors of water plant running can be fully considered, emergency feeding is facilitated, and purposes of solving low-concentration heavy metal emergency pollution and saving resources are achieved.
Owner:TIANJIN UNIV
Membrane treatment method for treating trace antimony in drinking water
ActiveCN101973651BSolve pollutionEasy to operateWater/sewage treatment bu osmosis/dialysisMultistage water/sewage treatmentPesticide residueCross-flow filtration
A membrane treatment method for treating trace antimony in drinking water comprises the following basic processes: after pre-precipitating and sterilizing pumped antimony-containing source water in a sterilization buffer pool, coagulating the source water in a coagulation pool and precipitating the source water in a precipitation pool, pressurizing the source water by a primary booster pump, filtering the source water by a multi-media filter and a precision filter, pressurizing the source water by a secondary booster pump and the sending the source water to a membrane treatment system to be treated. Nanofiltration or reverse osmosis membrane separation equipment is adopted for membrane separation, cross filtration technology is adopted for membrane filtration and physical cleaning and chemical cleaning are combined for cleaning the membrane separation equipment. Adopted for treating the drinking water contaminated by antimony, the membrane technology has high degree of automation, is mature and stable and ensures the energy consumption to be not more than 0.4kwh / m3, the working pressure of the membrane to be (0.15-0.75)MPa and the service life of the membrane to be not less than 3years. When the content of antimony in the source water is (5-100)mu g / L, the content of the heavy metal antimony in the product water (permeate) after separation treatment is not more than 5mu g / L (GB5749-2006) and the contents of lead, mercury, arsenic and other heavy metals and pesticide residues in the tap water are simultaneously lowered, thus obviously promoting the water quality.
Owner:湖南恒辉膜科技有限公司
Purification device for domestic sewage treatment
InactiveCN112390408AEasy to pull outEasy feedingTreatment involving filtrationMultistage water/sewage treatmentWater flowSewage treatment
A disclosed purification device for domestic sewage treatment comprises a box body, a built-in pull rod is arranged on one side of the box body in a penetrating mode, a push plate is fixedly connectedto the other side of the built-in pull rod, a sealing ring is arranged on the outer side of the push plate, a blocking plate is arranged in the middle of the built-in pull rod, and a first filter screen is arranged in the blocking plate; and a fixed plate is fixedly connected to the middle of the upper portion of the first filter screen, and the built-in pull rod penetrates through the fixed plate. Through the arrangment of the build-in pull rod, the push plate can be moved by pulling the built-in pull rod; through a second filter screen arranged in the push plate, precipitated impurities canbe pushed; through an arranged electric push rod, a movable plate can be opened, and one side of the movable plate is inclined, so that an opening is formed in the upper portion of a first discharging opening, impurities are discharged; and through an arranged first water outlet valve, water flow can be pumped into a reaction bin to be precipitated and then discharged from a second water outlet valve.
Owner:广州柒度科技有限公司
The method of removing heavy metal absorbent lac/paa combined with traditional water treatment process to remove low concentration pb(ii)
ActiveCN110304680BLow costHigh removal efficiency of Pb(II)Water contaminantsMultistage water/sewage treatmentActivated carbonSorbent
The invention discloses a method for removing low-concentration Pb(II) in combination with a heavy metal removing absorbent LAC / PAA and a traditional water treatment process. A low-cost heavy metal-removing absorbent (LAC / PAA) was prepared. Compared with activated carbon used in ordinary water purification plants (pH=6-10), the acidic groups on the surface of LAC / PAA increased (pH=4.8), thus obtaining adsorption The function of removing heavy metals. For the raw water polluted by Pb(II), the raw water quality should be analyzed first. If Pb(II)≤50μg / L, it can be directly absorbed by LAC / PAA, which can meet the requirements of WHO water quality guidelines. If 50μg / L
Owner:TIANJIN UNIV
Sequencing batch type combined biofilm integrated apparatus for treating high concentration organic wastewater
InactiveCN100376493CFlexible operationAdaptableTreatment with aerobic and anaerobic processesSustainable biological treatmentFiberHigh concentration
The invention discloses a sequencing batch type combined biofilm integrated apparatus for treating high concentration organic wastewater, wherein a tank body is provided with two submerged biological film reaction zones, the center of the tank body is an anaerobic submerged biological film reaction zone, the periphery of the tank body is an aerobic submerged biological film reaction zone, the anaerobic submerged biological film reaction zone is closed, the two reaction zones are provided with half-soft fiber fillings internally and a a underwater propeller on the bottom, the packing of the anaerobic submerged biological film reaction zone is provided with a underwater aeration apparatus on the bottom.
Owner:CHONGQING UNIV
Process and system for carrying out high-efficiency denitrification and dephosphorization treatment on urban sewage
ActiveCN102153239BSimple structureSmall footprintTreatment with aerobic and anaerobic processesMultistage water/sewage treatmentWhole bodyNitration
The invention belongs to the technical field of sewage treatment and particularly relates to a process and a system for carrying out high-efficiency denitrification and dephosphorization treatment on urban sewage. The process for carrying out high-efficiency denitrification and dephosphorization treatment on the urban sewage is characterized in that the process comprises the following steps that the pretreated urban sewage directly enters an anaerobic tank to be subjected to anaerobic hydrolysis; then the obtained product enters an anoxic tank and an aerobic tank to be subjected to denitrification, nitration and aerobic biodegradation; and finally the product enters a sedimentation tank to be subjected to solid-liquid separation and then is discharged. The process integrates anaerobic treatment, anoxic treatment and aerobic treatment into one whole body. The organisms, nitrogen and phosphorus are removed by a biochemical reaction principle. The system for carrying out high-efficiency denitrification and dephosphorization treatment on the urban sewage has a simple structure and a reduced occupied area.
Owner:中国冶金科工股份有限公司
A multi-mode operation integrated biological reaction pool for nitrogen and phosphorus removal
ActiveCN105110467BSmall footprintReduce in quantityTreatment with aerobic and anaerobic processesCell selectionWater quality
The invention discloses a multi-mode integrated biological reaction pool for nitrogen and phosphorus removal, the biological reaction pool includes a biological selection area, a pre-anoxic area, a main reaction area, a water distribution area, a water outlet area and an internal return channel; the main reaction The zone includes zone A, zone B and zone C; zone A can be used as an anaerobic zone or anoxic zone during operation, and zone B and zone C can be used as aerobic zone or anaerobic zone or anoxic zone during operation. The biological selection area is located at the front of the reaction tank, followed by a pre-anoxic area, the water distribution area is located between areas A, B, and C, the outlet area is located between areas B and C, and the inner return channel connects the outlet area and water distribution area. The nitrogen and phosphorus removal integrated bioreactor with multi-mode operation provided by the present invention has the characteristics of intensification, small footprint, and a small number of equipment. It can also operate in multiple modes alternately, with free and flexible mode switching, and impact load resistance. High-efficiency biological nitrogen and phosphorus removal can be achieved when the influent water quality changes greatly.
Owner:SHANGHAI MUNICIPAL ENG DESIGN INST GRP
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