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327 results about "Electro flocculation" patented technology
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Electrodialyzer and near-zero-release industrial wastewater recycling technique
ActiveCN103723799AGeneral water supply conservationDispersed particle separationIndustrial waste waterElectrolysis
The invention relates to an electrodialyzer and a near-zero-release industrial wastewater recycling technique. The electrodialyzer is arranged vertically; the electrodialyzer is in an asymmetrical water inlet-outlet channel structure, and the water inlet channel is more narrow than the water outlet channel; the cation-exchange membrane adopts a univalent ion exchange membrane, and the anion-exchange membrane adopts a general-purpose ion exchange membrane; and the negative plate and positive plate of the electrodialyzer adopt noble-metal-coated titanium base electrodes. The technique comprises the following steps: carrying out electric flocculation treatment on industrial wastewater, carrying out electrolysis and flocculation reaction under the actions of an electric field and air floatation, and pretreating the industrial wastewater by precipitation and filtration; directly recycling fresh water by an ultrafiltration+reverse osmosis combined technique; and carrying out deep concentration on concentrated water by using the electrodialyzer, recycling the produced fresh water, and sending the concentrated water into an evaporation crystallizer to perform evaporation crystallization. The technique is mainly used for treating circulating water sewage, satisfactory sewage, primary reverse osmosis concentrated water and other types of industrial sewage.
Owner:BEIJING JINGRUN NEW TECH DEV
Ultrasound, magnetic field, pulse electrocoagulation and membrane composite waste water treatment method, and apparatus thereof
InactiveCN102424495AEasy to cleanPass smoothlyWater/sewage treatment bu osmosis/dialysisMultistage water/sewage treatmentFiltrationWater quality
The present invention discloses an ultrasound, magnetic field, pulse electrocoagulation and membrane composite waste water treatment method, and an apparatus thereof. The technological process of the method comprises that: waste water is conveyed to an electrocoagulation reactor by a pump in an up-flow manner, wherein an ultrasonic generator, electrode plates and a permanent magnet are arranged inside the electrocoagulation reactor, the electrocoagulation voltage is 5-30 V, the current is 5-40 A, the ultrasonic frequency is 20-100 KHz, the ultrasonic power is 100-400 W, and the magnetic field strength is 0.1-0.3 T; the water sample flows through the positions between the electrode plates, and performs circulating flowing by an outer circulation pump; the waste water is treated for 5-12 minutes by the synergism of the ultrasound, the magnetic field, and the pulse electrocoagulation, and then is conveyed in a sedimentation tank by a pump; the supernatant is conveyed to a membrane assembly to carry out filtration to further separate the mud and the water by a pump, wherein the mud is subjected to concentration treatment and recovery, and the water is subjected to standard discharge. The method of the present invention has the following advantages that: the method is applicable for treatments of a lot of the waste water, and the effluent quality is good and stable.
Owner:GUANGXI BOSSCO ENVIRONMENTAL PROTECTION TECH
Method and device for treating high-concentration nonbiodegradable organic wastewater
ActiveCN103539296AImprove efficiencyReduce usageMultistage water/sewage treatmentFenton reactionChemical reaction
The invention discloses a method and device for treating high-concentration nonbiodegradable organic wastewater. The method comprises the following steps: (1) adjusting pH (Potential of Hydrogen) of the wastewater to be 3; (2) feeding the adjusted wastewater into an Fenton reactor, and simultaneously adding an Fenton agent to perform Fenton reaction; (3) enabling the wastewater containing the Fenton agent to flow through an electric flocculation device; continuously performing Fenton reaction under the effect of a pulsed power electric field, and simultaneously performing electrochemical reaction and electric catalytic oxidation reaction, in order to further degrade organic matters in the wastewater as well as generate flocculates and precipitates; scrapping the flocculates through a slag scraper in an air flotation area of the electric flocculation device; and (4) enabling the wastewater with the precipitates to flow into a precipitation tank, adjusting the pH to be 7 to 8, and then removing the precipitated wastewater from the precipitation tank. Compared with the prior art, the method for treating the high-concentration nonbiodegradable organic wastewater, disclosed by the invention, can improve the removal efficiency of nonbiodegradable organic pollutants.
Owner:SICHUAN KAIWO ENVIRONMENTAL PROTECTION TECHCO
Fracturing flowback fluid treatment method
InactiveCN103466848AGood removal effectLess investmentMultistage water/sewage treatmentWater/sewage treatment by flocculation/precipitationCatalytic oxidationElectro flocculation
The invention relates to a treatment method for fracturing flowback fluid in fracturing exploitation of unconventional oil and gas fields of petroleum, natural gas, shale gas, coal seam gas and the like, which is also suitable for treatment of fracturing flowback fluid in conventional oil and gas fields. The method comprises the following steps: in a fracturing flowback fluid process, pretreating a gel breaking and flocculating step of the fracturing flowback fluid by adding a certain amount of composite flocculants and performing coagulation reaction by adding a certain amount of gel breakers and regulators; and treating by catalytic oxidation and electric flocculation oxidation processes, so that the fluid can be discharged outside or reclaimed water can be reused, wherein the indexes of effluent reach the national first grade emission standard. The method for treating the fracturing flowback fluid of the conventional oil and gas fields has the characteristics of extremely good pollutant removing effect, small equipment investment, short treatment period, low operation cost, simple process flow, stability and reliability, ideal treatment effect, convenience for operation and the like, thereby having a wide application prospect.
Owner:南阳油田腾龙实业有限公司 +1
Treating method and electric flocculation device for Cu-EDTA complex wastewater
ActiveCN104071932AHigh mineralization rateMild reaction conditionsWater/sewage treatmentMultistage water/sewage treatmentSorbentEngineering
The invention provides a treating method and electric flocculation device for Cu-EDTA complex wastewater. The treating method comprises the following steps: placing the Cu-EDTA complex wastewater into a reaction tank for 30 to 50 minutes of electric flocculation reaction, wherein an aluminum electrode is taken as the anode, and an iron electrode is taken as the cathode; changing the current direction by taking the aluminum electrode as the anode while taking the iron electrode as the cathode, and carrying out electric flocculation reaction for 30 to 50 minutes, so as to fulfill treatment of the Cu-EDTA complex wastewater. The electric flocculation device comprises a power supply, a relay, the electrodes and the reaction tank, wherein the electrodes comprise the aluminum electrode and the iron electrode; one ends of the aluminum electrode and the iron electrode are connected in series with the power supply through the relay; the other ends of the aluminum electrode and the iron electrode are arranged in the reaction tank. The Cu-EDTA complex wastewater is treated due to the cooperation of the aluminum electrode and the iron electrode without addition of chemical agents and adsorbents. The method has the advantages that the operation is simple; the treating cost is low; the removal rates of copper ions and COD are high.
Owner:HUNAN UNIV
System for treating sludge by rotary electrodes in combination with flat sheet membrane
InactiveCN103979762AImprove digestion efficiencyImprove effluent qualitySludge treatmentWater qualityElectro flocculation
The invention discloses a system for treating sludge by rotary electrodes in combination with a flat sheet membrane. The system comprises a membrane treatment sludge reactor, an aeration device, a cathode membrane assembly, a first anode and a second anode, anode rotation control devices and a circuit control device, wherein the aeration device is arranged at the bottom inside the membrane treatment sludge reactor, the cathode membrane assembly is arranged inside the membrane treatment sludge reactor and located above the aeration device, the first anode and the second anode are both arranged inside the membrane treatment sludge reactor and located at both sides of the cathode membrane assembly, the anode rotation control devices are respectively arranged inside the first anode and the second anode and electrically connected with the first anode and the second anode and the circuit control device is respectively electrically connected with the first anode, the second anode and the cathode membrane assembly. According to the system disclosed by the invention, by applying an electric field in sludge, the cathode membrane assembly contamination is reduced; by use of anode electrochemical and electro flocculation technologies, the digestion efficiency of sludge and the effluent quality are improved; the deposition of sludge and microorganism is prevented by virtue of the rotation of anodes, the effective electric field strength is maintained and the dewatering performance of sludge is improved.
Owner:SHANGHAI SECOND POLYTECHNIC UNIVERSITY
Method and device for treating phosphorus wastewater by adopting multi-electrode baffling electric flocculation process
ActiveCN104787859AReduce processing costsSimple processWater/sewage treatmentPeristaltic pumpElectrochemistry
The invention belongs to the technical field of sewage treatment in environmental engineering, and particularly relates to a method and a device for treating phosphorus wastewater by adopting a multi-electrode baffling electric flocculation process. The PH value of wastewater is regulated with alkaline liquor to 7.0-8.0; the regulated wastewater is pumped into an electric flocculation tank through a peristaltic pump, is subjected to electrolytic flocculation treatment through the baffling of a multi-electrode under the condition of aeration, and then is discharged through an overflow launder, the discharged water is collected and left to stand for 30 minutes, a liquid supernatant is discharged, a floc is recycled; a power supply of the electric flocculation tank is a direct current power supply, the current density is 1.27-5.08mA / cm<2>, and the electrolysis time is 2 minutes to 48 hours. The technical characteristics are as follows: the wastewater baffles along the multi-electrode, then the short stream of the wastewater is avoided, the chance of enabling a pollutant in the wastewater to be in contact with a high-concentration flocculating agent in an electrolysis plate is increased, the flocculent precipitation is promoted, so that the pollutant treatment effect is improved. The multi-electrode baffling electric flocculation process is suitable for treating inorganic phosphorus wastewater at medium and low concentrations, needed equipment is simple, easy in operation and low in cost, and runs stably, so that the process is an electrochemistry phosphorous removal process having a high potential.
Owner:中国中化股份有限公司 +2
Application method of high-property activated carbon fibers in treatment of industrial waster water by electrocoagulation
InactiveCN102092821AAvoid secondary pollutionSecondary pollution will not occurWater/sewage treatmentMultistage water/sewage treatmentFiberElectrolysis
The invention discloses an application method of high-property activated carbon fibers in the treatment of industrial waster water by electrocoagulation. In the application method, the industrial waster water is treated by the electrocoagulation, the high-property activated carbon fibers are used as an electrode for electrolysis and has a composition of activated carbon. The high-property activated carbon fiber electrode has the advantages of high electrolysis efficiency, wide application range, low use cost and no secondary pollution, and is beneficial to water reuse treatment by reverse osmosis, thus the high-property activated carbon fibers have an extremely giant application prospect in the process of treating industrial waster water by high-frequency high-voltage impulse electrocoagulation.
Owner:吴国君 +1
Landfill leachate treatment method
InactiveCN110713314AReduce conductivityImprove biodegradabilityWater contaminantsTreatment involving filtrationAmmoniacal nitrogenWater production
The invention relates to the technical field of landfill leachate treatment, in particular to a landfill leachate treatment method. The landfill leachate treatment method comprises the following steps: step 1, treatment in an adjusting tank; step 2, electric flocculation treatment; step 3, anaerobic tank treatment; step 4, treatment in an anoxic tank; 5, aerobic treatment on the MBR membrane reactor; step 6, filter treatment; step 7, NF membrane and RO membrane treatment; and step 8, treatment on the landfill leachate concentrated solution. The landfill leachate treatment method can effectively reduce the conductivity and part of COD, ammonia nitrogen and other pollutants in the leachate; the biodegradability and stability of the landfill leachate are improved, the occupied area of a biochemical treatment system is reduced under the same condition, the service life of a membrane system is prolonged, the water production rate of the membrane system is improved, and meanwhile, the problems encountered in recharging and evaporation of a concentrated solution are effectively solved.
Owner:GUANGREEN ENVIRONMENTAL PROTECTION ENG
Electric flocculation unit, electric flocculation device and heavy metal wastewater treatment system
PendingCN107215929ATo achieve the purpose of removing pollutantsEfficient electrolysisWater treatment compoundsSpecific water treatment objectivesWater treatment systemElectro flocculation
The invention belongs to the field of heavy metal wastewater treatment and provides an electric flocculation unit, an electric flocculation device and a heavy metal wastewater treatment system. The electric flocculation unit comprises a shell, an anode bar, a cathode tube, iron carbon ball filler, a rotary type scraper device, an ultraviolet lamp, an aerating device, a power module and a liquid conveying mechanism, wherein the cathode tube is vertically arranged in the shell, the anode rod is vertically arranged in the cathode tube, the rotary type scraper device and the ultraviolet lamp are arranged in the cathode tube, the rotary type scraper device is movably connected with the shell through a bearing, the shell is detachably connected with the cathode tube and the anode bar, an insulating plate where a diffluence hole is formed is detachably connected to the cathode tube, and the iron carbon ball filler is stacked on the insulating plate. The electric flocculation device disclosed by the invention comprises a plurality of electric flocculation units, supports and liquid storage tanks, wherein the electric flocculation units, the supports and the liquid storage tanks are communicated through pipelines to be in parallel connection or serial connection. The heavy metal wastewater treatment system comprises the electric flocculation device, an air floating device and an ion exchange device, wherein are sequentially connected with each other. The heavy metal wastewater treatment system disclosed by the invention has a good heavy metal wastewater treatment effect and convenience in disassembling and cleaning.
Owner:SHENZHEN GAIA ENVIRONMENTAL ENG CO LTD
Multi-chamber multidimensional electro-coagulation apparatus for high ammonia nitrogen wastewater
InactiveCN105060419ALarge specific surface areaEasy to handleWater/sewage treatment using germicide/oligodynamic-processWater/sewage treatment by flotationAmmoniacal nitrogenElectrolysis
The invention relates to a multi-chamber multidimensional electro-coagulation apparatus for high ammonia nitrogen wastewater. The multi-chamber multidimensional electro-coagulation apparatus comprises: an electro-coagulation apparatus shell; a high voltage pulse power supply; anode plates, cathode plates, separator plates, particle electrodes and aeration areas which are arranged in the shell; and auxiliary assemblies arranged on the shell, wherein the anode plates and the cathode plates are respectively provided with a composite catalyst coating layer, and are respectively connected with the positive electrode and the negative electrode of the high voltage pulse power supply. The multi-chamber multidimensional electro-coagulation apparatus adopts the high voltage pulse power supply as an apparatus power supply, and spaces between the cathode plates and the anode plates are filled with the particle electrodes, so the energy consumption is greatly reduced, the specific surface area of the electrodes are increased, and the current efficiency is improved; and micro bubbles generated in the electrolysis process have an air flotation effect, so the wastewater treatment effect of the apparatus is totally greatly improved. The apparatus has the advantages of convenient operation, integration electro-coagulation, electro-catalysis and air flotation, and realization of continuous multistage treatment of wastewater through multiple chambers.
Owner:NANJING RUNTRY WATER
Process and device for electric cracking catalytic oxidation and electric flocculation for petroleum drilling wastewater
InactiveCN103288249AImprove power utilizationIncrease current densityWaste water treatment from quariesMultistage water/sewage treatmentReduction procedurePetroleum
The invention discloses a process for electric cracking catalytic oxidation and electric flocculation for petroleum drilling wastewater. The process comprises an electric cracking catalytic oxidation-reduction procedure and an electric flocculation procedure, wherein the electric cracking catalytic oxidation-reduction procedure is performed in a high-pressure sealing reaction tank, and the pressure in the sealing reaction tank is 0.2-0.5 Mpa. The invention further discloses a device for electric cracking catalytic oxidation and electric flocculation for petroleum drilling wastewater. The device comprises an electric cracking catalytic oxidation-reduction device and an electric flocculation device, wherein the electric cracking catalytic oxidation-reduction device comprises the sealing reaction tank, an electrolytic bath and an electrode plate, and the electrode plate in the electrolytic bath comprises a negative titanium-based coating electrode plate; the electrolytic bath is formed in the lower part in the sealing reaction tank, and a concrete layer is arranged between the electrolytic bath and the sealing reaction tank; and a copper wiring terminal is arranged in the concrete layer, and connected with the electrode plate via a graphite wiring terminal and an inert metal wiring terminal. The wastewater is treated by the process and the device of pressurizing to dissolve air at first, and then electrolyzing, and finally performing electric flocculation, disclosed by the invention, so that the effluent quality is remarkably improved.
Owner:张太亮 +2
Design scheme of standardized electric flocculation equipment
InactiveCN102010037ASimplify the difficulty of structural designImprove unit process efficiencyWater/sewage treatment by flotationWater dischargeElectrolysis
The invention relates to a design scheme of standardized electric flocculation equipment by a core idea that the electrolysis process and the coagulation floatation process are separately realized in two unit processes and are designed according to respective principles. The standardized electric flocculation equipment consists of a flow regulation device, an electrolysis reactor, a separation device, a power supply and a control system, wherein a plate of the electrolysis reactor is placed horizontally, connected in bipolar type, and combined with an electrode fixing frame to form a flow guide system; the separation device selects a vertical flow type floatation tank with water fed in the center and water discharged at periphery, and is equipped with a central flow guide cylinder, a slag and mud scraping device, and a slag and mud discharging device and the like; and the power supply adopts a direct-current stabilized power supply of a silicon-controlled integrated circuit, which has automatic timed electrode reversing function. The design scheme has the advantages of reasonable structure, high process efficiency, good effluent quality and high safety and the like, and can ensure that the energy consumption is 75-90% lower than that of the traditional equipment, strengthen the coagulation floatation process, reduce the blockage, and prevent the passivation of the electrode.
Owner:王惠丰
Wireless electric flocculation water treatment device based on bipolar electrochemical principle
PendingCN107459113AEasy to change regularlyEliminate connectionWater/sewage treatment apparatusElectro flocculationEngineering
The invention discloses a wireless electric flocculation water treatment device based on bipolar electrochemical principles. The device comprises an electrolytic tank, a power supply, a main anode and a main cathode, wherein the main anode and the main cathode are arranged inside the electrolytic tank and are respectively electrically connected with the power supply; at least one bipolar electrode is arranged between the main anode and the main cathode inside the electrolytic tank; and the main surface of the bipolar electrode or a main shaft is not perpendicular to the direction of an electric field line in the electrolytic tank. As the bipolar electrode which is not connected with an external circuit is arranged between the main anode and the main cathode, and the main surface or the main shaft is not perpendicular to the direction of the electric field line in the electrolytic tank, the bipolar electrode is subjected to an electrochemical reaction under polarization of the electric field of a solution, a high-activity flocculant is generated, meanwhile action of electroflotation, oxidation reduction and the like are resulted, dissoluble and suspended pollutants and colloids in water can be effectively converted and removed, and thus the purpose of sewage purification is achieved. The wireless electric flocculation water treatment device has the characteristics that the structure is simple, electrodes are conveniently replaced, electrode materials are saved, the purification efficiency is high, blocking is not easily caused and the cost is low.
Owner:云智前沿科技发展(深圳)有限公司
Method and equipment for treating drilling fracturing return liquid of oil and gas field
ActiveCN107235580ABig social and economic significanceReduce transportationWaste water treatment from quariesSludge treatmentThermodynamicsWell drilling
The invention discloses a method and equipment for treating drilling fracturing return liquid of an oil and gas field. According to the method, fracturing return liquid is subjected to oil and gas separation, pH value regulation, electric flocculation, primary physico-chemical precipitation clarification, electrocatalytic oxidative degradation, secondary physico-chemical precipitation clarification, mud-water separation device treatment and discharge or recycling, three functions including oil recycling, water treatment and mud curing of the drilling fracturing return liquid can be realized, standard discharge or reinjection application of the fracturing return liquid can be realized, and the aim of resource utilization can be realized. The method has great social and economic meanings for pollutants in oil field drilling operation, and can be used for reducing cost for transportation, storage and treatment of fracturing liquid and recycling water in other application on the ground.
Owner:方明环保科技(漳州)有限公司
Domestic sewage treatment technology and system
ActiveCN105084620AImprove water qualityImprove oxidation capacityWater/sewage treatment by irradiationMultistage water/sewage treatmentElectrolysisElectro flocculation
The invention provides a domestic sewage treatment technology and system, and relates to the field of domestic sewage treatment technologies. The domestic sewage treatment technology comprises the following steps that 1, salinity regulation is performed on domestic sewage; 2, electric flocculation treatment is performed on the domestic sewage to obtain supernatant liquid and solid sediment; 3, electrolysis treatment is performed on the supernatant liquid to obtain sewage containing oxidizing agents; 4, deep treatment is performed, wherein gas is introduced into the sewage containing the oxidizing agents, the gas pressure is 3-5 bar, irradiation is performed with an ultraviolet lamp, the irradiation intensity of the ultraviolet lamp is 20-150 mJ / cm<2>, and the irradiation time is 1-8 min. The invention further provides the treatment system for implementing the technology. According to the domestic sewage treatment technology and system, electric flocculation treatment, electrolysis treatment, chlorine removal and organic matter deep treatment are organically combined, high deepening treatment is performed on the domestic sewage, impurities in the sewage are greatly reduced, and the content of organic matter is especially reduced; the process is simple, operation is convenient, and the treatment efficiency is high.
Owner:SUNRUI MARINE ENVIRONMENT ENG
Electric flocculation deep treatment method for thallium-containing wastewater and electric flocculation device
PendingCN108395025ASimple processEasy to operateWater contaminantsTreatment involving filtrationElectricityFlocculation
The invention discloses an electric flocculation deep treatment method for thallium-containing wastewater. The electric flocculation deep treatment method comprises the following steps: (1) adding a precipitating agent into the thallium-containing wastewater and pre-treating to obtain pre-treated wastewater; (2) treating the pre-treated wastewater in step (1) by utilizing an electric flocculationtreatment device to obtain electric flocculation treated wastewater; (3) adding a flocculating agent into the electric flocculation treated wastewater obtained by step (2); after flocculating and precipitating, filtering and directly discharging filtrate. The invention further provides the electric flocculation treatment device used for the treatment method. The treatment method disclosed by the invention has a simple technological flow, is easy to operate and manage and has high automation degree and very low cost. According to the electric flocculation treatment device disclosed by the invention, an inner cavity of a reactor adopts a large-top and small-top form; the flow speed of the wastewater flowing through the reactor has gradient changes from bottom to top, and the problems that floc sinks down, caused by a repose angle of the straight-plate reactor and insufficient propelling force in the reactor, can be reduced or eliminated.
Owner:CHANGSHA RES INST OF MINING & METALLURGY
Chemical nickel wastewater treatment method and treatment system used by same
PendingCN108609810AReduce in quantityWon't clogWater treatment parameter controlWater contaminantsFlocculationCompound (substance)
The invention relates to the technical field of wastewater treatment, in particular to a chemical nickel wastewater treatment method and a treatment system used by the same. The treatment method sequentially comprises steps as follows: (1) chemical nickel wastewater is introduced into a pH regulating tank, and the chemical nickel wastewater is adjusted to be acidic; (2) the chemical nickel wastewater is introduced into an electric flocculation system, wherein the electric flocculation system comprises a first electrode and a second electrode, the first electrode is an anode, the second electrode is a cathode, the first electrode is made of iron, complexing chains or chelating chains in the wastewater are broken through electric connection, and nickel in the wastewater participates in a replacement reaction in a molecular grain state to be separated out in a form of hydroxide precipitate; (3) wastewater obtained in the step (2) is introduced into a pH readjusting tank, and the wastewater is adjusted to be alkaline; (4) the wastewater is introduced into an MBR (membrane bioreactor) membrane pool to be filtered; (5) the wastewater is introduced into a resin tank for further adsorptionof metal nickel. The treatment method is simple to operate, addition of a recapturing agent is not required, the amount of produced sludge is small, and rear-section MBR membranes cannot be blocked.
Owner:江苏善鼎环保科技有限公司
Method for treating electroplating wastewater based on low voltage pulsed electric flocculation technology
InactiveCN102241449ASolve the problem of electrode fouling and agingSolve the problem of energy consumptionMultistage water/sewage treatmentLow voltageElectro flocculation
The invention discloses a method for treating electroplating wastewater based on low voltage pulsed electric flocculation technology. The method comprises the following steps: treating electroplating wastewater by pulsed electric flocculation technology, wherein the time for the treatment is 20 min to 60 min, pulse power supply is an industrial-frequency alternating current of 220 V and 50 Hz, output voltage of the pulse power supply is 0 to 36 V, duty ratio is 10% to 90%, output frequency is 100 Hz to 1000 Hz, output current density is 0.5 A / dm<2> to 3.5 A / dm<2>, the anode of the electric flocculation is aluminum electrodes, the cathode is stainless steel electrodes, and the distance between plate electrodes is 1 cm to 10 cm; adding lime into the electroplating wastewater treated by pulsed electric flocculation to adjust the pH value of the wastewater to be 7.4, wherein the weight ratio of lime to the treated wastewater is 1:200 to 1:40; adding diatomite into the solution, wherein the weight ratio of diatomite to the electroplating wastewater treated by pulsed electric flocculation is 1:200, standing the solution for deposition, and discharging or recycling the electroplating wastewater. The method provided in the invention is simple and easy to implement and enables low cost and high efficiency; treated wastewater can be reused or discharged directly.
Owner:JIANGSU UNIV
High efficiency sewage treatment method
InactiveCN105502754AHigh recovery rateReduce processing costsMultistage water/sewage treatmentSludgeFiltration
Belonging to the technical field of sewage treatment, the invention discloses a high efficiency sewage treatment method. The method includes: collecting sewage, then letting the sewage enter an adjustment tank and mixing the sewage evenly, then subjecting the sewage to electric flocculation in an electric flocculation tank, letting the water from electric flocculation pass through a sedimentation tank, making the sludge settling in the sedimentation tank enter a plate-frame pressure filtration system, letting the supernatant of the sedimentation tank enter an immersed ultrafiltration tank, returning the ultrafiltered concentrate water into an adjustment tank, making the ultrafiltration produced water enter a reverse osmosis system, returning part of reverse osmosis concentrate water to the adjustment tank, and discharging part of the reverse osmosis concentrate water to the outside, and reusing the reverse osmosis produced water in line with the reuse standards in production. The method provided by the invention combines electric flocculation technology with membrane separation technology, and reaches the purposes of improving the produced water quality and enhancing the sewage reuse rate.
Owner:QINGDAO BAIJIANCHENG ENVIRONMENTAL PROTECTION TECH CO LTD
Treatment process and treatment system of lithium battery waste liquid
ActiveCN106673369AReduce CODImprove biodegradabilityWater treatment parameter controlTreatment using aerobic processesBiological filterElectro flocculation
The invention relates to the technical field of sewage treatment, and in particular to a treatment process and a treatment system of lithium battery waste liquid. The treatment process comprises the following steps: (1) electrochemical treatment: introducing the lithium battery waste liquid into an electrochemical treatment unit for electric flocculation reaction; (2) A2 / O treatment: introducing the electrochemically treated lithium battery waste liquid into an anaerobic tank, an anoxic tank and an aerobic filter device in sequence, wherein the aerobic filter device is an MBR (Membrane Biological Reactor) or consists of an aerobic tank and a secondary settling tank which are communicated with each other; (3) denitrification and nitration: introducing the lithium battery waste liquid subjected to the A2 / O treatment into a denitrification tank for denitrification reaction and a nitration aeration biological filter tank for nitration reaction, and then discharging the lithium battery waste liquid. By the adoption of electrolytic flocculation treatment, A2 / O and nitration and denitrification combination process for treatment, the contents of various pollutants in the lithium battery waste liquid are substantially reduced, so that the final discharge standard meets the requirements of GB30484-2013.
Owner:GUANGREEN ENVIRONMENTAL PROTECTION ENG
Sequence flow return type sewage treatment method and treatment device
ActiveCN104671612AAccelerate adsorption and aggregationEnhanced compression flocculationMultistage water/sewage treatmentFlocculationIndustrial waste water
The invention discloses a sequence flow return type sewage treatment method which comprises the following steps: conveying sewage to an anoxic / anaerobic tank; conveying the sewage into a contact oxidation tank and performing aeration oxygenation on the sewage in the contact oxidation tank; conveying the supernatant obtained by precipitating in the contact oxidation tank into an electric flocculation and sedimentation tank; returning and mixing the sewage part subjected to electric flocculation, conveying the other part of sewage subjected to electric flocculation into a membrane tank for performing mud-water separation, and discharging the treated water. According to the treatment device disclosed by the invention, an anoxic / anaerobic tank, a contact oxidation tank, an electric flocculation and sedimentation tank and a membrane tank are separated on a treatment unit tank, wherein the contact oxidation tank is communicated with the electric flocculation and sedimentation tank by virtue of a supernatant conveying pipe; a flocculation solution return pipe is arranged on the electric flocculation and sedimentation tank; and the electric flocculation and sedimentation tank is communicated with the membrane tank. The mutual interference and restriction between electric flocculation and biological treatment can be avoided, and the efficiency can be maximized. The method and device disclosed by the invention are widely applied to treatment of domestic sewage on ships and lands and industrial wastewater.
Owner:DONGTAI CITY DONGFANG MARINE FITTING
Internal electrolysis-electric flocculation method for processing phosphor-containing wastewater
InactiveCN105060411ASimple processMeet processing requirementsWater/sewage treatmentPollutantTreatment costs
The invention provides an internal electrolysis-electric flocculation method for processing phosphor-containing wastewater, and belongs to the technical field of phosphor-containing wastewater treatment. The processing method comprises two parts: internal electrolysis and electric flocculation; the phosphor-containing wastewater is subjected to internal electrolysis at first, after the phosphor-containing wastewater reaches the requirements of post treatment, the phosphor-containing wastewater is subjected to electric flocculation, the provided method can eliminate the pollutants in one step and is capable of clarifying the wastewater at the same time, the processed wastewater can reach the discharge standards or reuse requirements, and moreover, the energy consumption and the treatment cost are low during the wastewater treatment process.
Owner:JIANGSU UNIV
Electrocoagulation waste water treatment device
The invention discloses an electrocoagulation waste water treatment device. A pipeline is multisegmental, a detection value is arranged on the upstream end of each segment of pipeline, a dosing valve is arranged on the downstream end of each segment of pipeline so as to realize the fact that any pipeline segment is filled with medicaments, different medicaments can be added in different pipeline segments and different flow ways so as to meet the treatment demand; secondly, an anode and a cathode are arranged on each segment of pipeline of the electrocoagulation waste water treatment device, the anode and the cathode exist in a pipeline, an anti-leakage rubber tube sleeves the outsides of the pipelines so as to provide a closed reaction space, the generated harmful gas cannot be dispersed and is easily controlled, the reaction is complete, and the combination is convenient; furthermore, a pressurizing valve is arranged at a water outlet of the electrocoagulation waste water treatment device to be matched with the airtight environment in each segment of pipeline, so that the pressurization on the gas can be conducted, the solubility of the gas is higher, and the treatment effect is better; in conclusion, by adopting the electrocoagulation waste water treatment device, the sewage treatment effect can be greatly improved, and the reaction can be shortened.
Owner:DONGGUAN DONGYUAN ENVIRONMENTAL TECH CO LTD
Device and method for quickly treating and recycling car washing wastewater
InactiveCN111704281AEasy to separateContinuous reuse processWater treatment compoundsMultistage water/sewage treatmentElectrochemical responseElectro flocculation
The invention discloses a rapid treatment and recycling device and method for car washing wastewater, and relates to the technical field of wastewater treatment. The rapid treatment and recycling device for the car washing wastewater comprises a car washing wastewater inlet device and an electrochemical reactor, wherein the electrochemical reactor is provided with a flocculation chamber, an oxidation chamber and a filtering chamber, electrode plates are arranged in the flocculation chamber and the oxidation chamber, a dross scraping mechanism is arranged at the upper part of the flocculation chamber, the flocculation chamber is connected with an air dissolving mechanism, the oxidation chamber is connected with an aeration mechanism, and the filtering chamber and the oxidation chamber are connected with a dosing device for dosing a treating agent. Based on electric flocculation, electric Fenton with additional addition of hydrogen peroxide and a pressurized dissolved air flotation technology, the electric conductivity is improved, the treatment speed is increased and the treatment cost is reduced by additionally adding sodium sulfate, so that rapid recycling of the car washing wastewater is realized. Meanwhile, polyacrylamide is added, so that suspended, emulsified or dissolved pollutants quickly form lumps, and the filtering efficiency is improved.
Owner:陈方鑫
Comprehensive compact unit for the treatment of effluents and/or sewage and system that uses it
InactiveUS20130264210A1Small sizeReduce processing timeFatty/oily/floating substances removal devicesElectrostatic separatorsElectricityElectrocoagulation
A comprehensive and independent unit for the treatment of Effluents or Sewage and the system that uses it. This unit requires little space and it has a high capacity to mitigate effluent parameters. This treatment is performed by means of a single reactor which carries out the electrocoagulation, electro flocculation, electro flotation, electrooxidation and electrohydrolization and it drains in a high performance decanter which is a single container. The unit is composed of a reactor (4) that sends its clotted effluents into a decanter (5) and its foam into a foam collector (6). The decanter (5) is placed adjacent to the foam collector (6) and has the capacity to discharge its foam into the collector (6); the whole process is carried out without the need for any auxiliary recirculation devices.
Owner:COBAS JORGE LUIS +3
System and method for electrochemically treating high-viscosity fracturing flow-back fluid
InactiveCN110642334AReduce secondary processing costsHigh degree of automationWaste water treatment from quariesWater treatment parameter controlCatalytic oxidationElectro flocculation
The invention discloses a system for electrochemically treating a high-viscosity fracturing flow-back fluid. The system comprises a pH adjusting unit, an electrocatalytic oxidation unit and an electric flocculation unit which are arranged in sequence, wherein the pH adjusting unit is used for adjusting the pH value of the fracturing flow-back fluid to 4-7, the electrocatalytic oxidation unit comprises an electrocatalytic oxidation device, and the electric flocculation unit comprises an electric flocculation device connected with effluent of the electrocatalytic oxidation device. The inventionalso discloses a method for treating the fracturing flow-back fluid. The method comprises the following steps: 1) adjusting the pH value of the fracturing flow-back fluid to be treated to 4-7; 2) performing electrocatalytic oxidation treatment on the fracturing flow-back fluid obtained in step 1); and 3) performing electric flocculation treatment on effluent in step 2). The treatment system and the method mainly adopt electric energy to achieve the treatment of the fracturing flow-back fluid, so the system and the method accord with the clean production category; and a large amount of an organic or inorganic polymer agent is not needed in the treatment process, so the system and the method have the advantages of no secondary pollution, stable effluent quality, and saving of resources and cost.
Owner:BEIJING DILI WEIYE TECH DEV
Electrochemical reactor, method for removing chlorine ions in waste water through electric flocculation, precipitation product and application
ActiveCN107298490AReduce secondary pollutionReduce the possibility of secondary pollutionSpecific water treatment objectivesScale removal and water softeningElectrochemical responseCopper electrode
The invention discloses an electrochemical reactor, a method for removing chlorine ions in waste water through electric flocculation, a precipitation product and an application. The electrochemical reactor comprises one or more reaction tanks, wherein an anode and a cathode in the reaction tank alternately arranged; the anode is a copper electrode; and the cathode is an inert electrode. The method comprises the steps of introducing to-be-treated waste water into the reaction tanks of the electrochemical reactor and immersing the anode and the cathode into the waste water; applying constant current between the anode and the cathode and lastingly stirring the waste water. According to the invention, an agent does not need to be additionally added, the possibility of secondary pollution is very low, the reaction conditions are mild and limitation of the concentration range of the chlorine ions is avoided. Meanwhile, the device used for reaction is simple, relatively low in cost and beneficial to automation.
Owner:WUHAN POLYTECHNIC UNIVERSITY
Electric flocculation membrane bioreactor
InactiveCN103539323AImprove efficiencyImprove nitrogen and phosphorus removal efficiencyMultistage water/sewage treatmentActivated sludgeCell activity
The invention discloses an electric flocculation membrane bioreactor comprising a reactor body, wherein a contact oxidation tank, a settling tank and a membrane biological reaction tank are arranged in the reactor body; a contact oxidation aerator and soft fillers are arranged in the contact oxidation tank, the membrane biological reaction tank is communicated with a filtration membrane group, the membrane extraction water outlet of the filtration membrane group is communicated to a pure water discharge pipe, a sewage input pipe is further arranged on the reactor body, at least one group of positive and negative flocculation electrodes is arranged in the reactor body, and the positive and negative flocculation electrodes are electrically connected with an electric flocculation power supply; the contact oxidation tank, the settling tank and the membrane biological reaction tank are mutually communicated in sequence, and a precipitate return pipe is arranged in the settling tank and / or the membrane biological reaction tank. The electric flocculation membrane bioreactor disclosed by the invention can not only effectively reinforce the aggregation state of activated sludge, but also improve the cell activity of the sludge bacteria, enhance the deoxidation and dephosphorization effects, alleviate the membrane pollution and improve the flux and prolong the service life of the membrane, thereby being capable of being widely applied in treatment of various of sanitary sewage.
Owner:DONGTAI CITY DONGFANG MARINE FITTING
Coupling device and process for deeply treating landfill leachate
InactiveCN109502841AReduce upfront investmentLower runWater/sewage treatmentMultistage water/sewage treatmentFlocculationMicrofiltration
Owner:GUANGDONG UNIV OF TECH
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