CN114890615A - Reclaimed water reuse combined treatment pool in industrial park and use method thereof - Google Patents

Reclaimed water reuse combined treatment pool in industrial park and use method thereof Download PDF

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Publication number
CN114890615A
CN114890615A CN202210413276.7A CN202210413276A CN114890615A CN 114890615 A CN114890615 A CN 114890615A CN 202210413276 A CN202210413276 A CN 202210413276A CN 114890615 A CN114890615 A CN 114890615A
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tank
activated carbon
biological activated
water
gas
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CN114890615B (en
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张瀚琨
许霞
刘程尹
徐锦辉
刘建亮
康旭栋
颜永晗
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Changzhou University
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Changzhou University
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00Multistage treatment of water, waste water or sewage
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/46Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/465Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electroflotation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/50Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/72Treatment of water, waste water, or sewage by oxidation
    • C02F1/78Treatment of water, waste water, or sewage by oxidation with ozone
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F2003/001Biological treatment of water, waste water, or sewage using granular carriers or supports for the microorganisms
    • C02F2003/003Biological treatment of water, waste water, or sewage using granular carriers or supports for the microorganisms using activated carbon or the like
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2203/00Apparatus and plants for the biological treatment of water, waste water or sewage
    • C02F2203/006Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00Controlling or monitoring parameters in water treatment
    • C02F2209/08Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00Specific treatment goals
    • C02F2303/04Disinfection
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00Specific treatment goals
    • C02F2303/14Maintenance of water treatment installations
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/02Aerobic processes
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/34Biological treatment of water, waste water, or sewage characterised by the microorganisms used
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/10Biological treatment of water, waste water, or sewage
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/30Wastewater or sewage treatment systems using renewable energies
    • Y02W10/37Wastewater or sewage treatment systems using renewable energies using solar energy

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Water Treatment By Sorption (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)
  • Physical Water Treatments (AREA)

Abstract

A combined treatment tank for recycling reclaimed water in an industrial park and a use method thereof belong to the field of ecological environment. The domestic sewage in the industrial park is intercepted by the grating and flows into the combined treatment tank through the pipeline, bubbles generated by electrolyzing the sewage by the electrode plate are combined with the slag suction machine to adsorb and remove suspended dirt in the water, and part of organic matters and heavy metal ions are also electrolyzed, oxidized and reduced in the period. Aeration in the biological activated carbon tank is from gas circulation and partial air inflow in the combined tank, and a folded plate is arranged to increase the hydraulic retention time. And (4) sterilizing and disinfecting the sewage in the ozone disinfection tank, and finally discharging the effluent in an overflowing manner. O is 2 And unreacted O 3 The waste gas is collected and conveyed back to the electric air flotation tank by the air duct for secondary utilization, and the functions of adsorption and oxidative degradation are achieved. Gas generated in the sewage treatment process is finally collected through a gas collection port above the biological activated carbon tank, is conveyed into the aerobic tank, and finally enters the anaerobic tank for fermentation. The invention can promote the construction of reclaimed water reuse in industrial parks, and simultaneously, the gas resource can be recycled, thereby having lower influence on the environment.

Description

Combined treatment tank for recycling reclaimed water in industrial park and using method thereof
Technical Field
The invention belongs to the field of ecological environment, and particularly relates to a combined treatment tank for recycling reclaimed water in an industrial park, which consists of an electric floating tank, a biological activated carbon tank and an ozone disinfection tank.
Background
At present, the domestic existing reclaimed water recycling device and process in industrial parks are generally complex, large in occupied area, high in capital cost and large in initial capital investment. Chemical reagents are also commonly added in the water treatment process, so that potential hazards exist in the water quality safety. Meanwhile, a large amount of CO is often accompanied in the sewage treatment process 2 The emission of (2) adversely affects the environment. Therefore, the design and development of the water recycling combined pool in the industrial park, which has the advantages of low investment cost, small capital construction area, reduction and even avoidance of the addition of chemical reagents, and capability of recycling gas resources according to the principle of green science, is imperative. When effectively opening up "second water source", alleviate industrial park water pressure with water, and then reduce industrial park water cost spending. The production cost is reduced, the surrounding natural environment is protected, and a better living and working atmosphere is created for enterprise staff.
Disclosure of Invention
Aiming at the defects of the existing reclaimed water reuse treatment tank on the market at present, the invention aims to design the reclaimed water reuse combined treatment tank in the industrial park, which has the advantages of good water treatment effect, stable quality of discharged water, safety, environmental protection and emission reduction.
In order to achieve the purpose, the invention adopts the following technical scheme:
a combined treatment tank for reclaimed water reuse in an industrial park comprises an electric floatation tank, a biological activated carbon tank, an ozone disinfection tank, a plate electrode 1, a slag suction machine 2, a fine filter screen, a gas distribution pipeline, biological activated carbon 5, a fan, a gas guide pipe, a check valve, a water outlet, an overflow weir, a folded plate 12, a vent 13, a lift pump water inlet 14, a water outlet 15, a water delivery pipe 16 and a lift pump 17 which are sequentially connected;
the fine filter screens comprise a first fine filter screen 3a, a second fine filter screen 3b and a third fine filter screen 3 c; the gas distribution pipeline comprises a first gas distribution pipeline 4a, a second gas distribution pipeline 4b and a third gas distribution pipeline 4 c; the fans comprise a first fan 6a, a second fan 6b, a third fan 6c, a fourth fan 6d and a fifth fan 6 e; the airway tube comprises a first airway tube 7a, a second airway tube 7b and a third airway tube 7 c; the check valves include a first check valve 8a, a second check valve 8b and a third check valve 8 c; the valves comprise a first valve 9a, a second valve 9b, a third valve 9c and a fourth valve 9 d; the water discharge openings comprise a first water discharge opening 10a, a second water discharge opening 10b and a third water discharge opening 10 c; the overflow weir comprises a first overflow weir 11a, a second overflow weir 11b and a third overflow weir 11 c;
the electrode plates 1 are arranged on the four side walls of the electro-flotation tank and are used for electrolyzing domestic sewage to generate H 2 And O 2 The suspended pollutant in the sewage is attached to the bubbles and floats to the water surface by utilizing the higher specific surface area and the stronger adsorption capacity of the bubbles to form scum which is easier to remove, and meanwhile, heavy metal ions and some soluble pollutants thereof are directly electrolyzed, oxidized and reduced into heavy metal or other harmless or precipitated substances to be removed, thereby being beneficial to the subsequent adsorption of activated carbon;
the first fine filter screen 3a is arranged at a water outlet at the upper right of the electro-flotation tank and used for intercepting suspended pollutants; the second fine filter screen 3b is arranged in the biological activated carbon tank and used for intercepting expanded and floated biological activated carbon; the third fine filter screen 3c is arranged at a water outlet at the upper right of the biological activated carbon tank and is used for intercepting the biological activated carbon and preventing the biological activated carbon from flowing into the ozone disinfection tank to cause loss of the biological activated carbon and deterioration of effluent quality;
the slag suction machine 2 is arranged above the position close to the first fine filter screen 3a and is used for removing suspended dirt floating on the water surface of the electric floating pool;
the first gas distribution pipeline 4a is arranged at the bottom of the electric floating tank in parallel, and under the work of the first fan 6a, the gas in the ozone disinfection tank is conveyed to the upper part of the ozone disinfection tank through the first gas guide pipe 7a connected with the upper part of the ozone disinfection tankOxygen for aeration and recycling in the electro-flotation tank 3 The sewage is purified by cooperating with the electric floatation, so that the recycling of gas is realized, and the utilization rate of ozone is improved;
the second gas distribution pipeline 4b is arranged at the bottom of the biological activated carbon tank in parallel, and under the action of a fifth fan 6e, gas generated in the electric floatation tank and air entering the electric floatation tank through the air vent 13 are sucked by the second gas guide pipe 7b and conveyed to the biological activated carbon tank for aeration, so that the gas in the electric floatation tank is recycled;
the third gas distribution pipeline 4c is arranged at the bottom of the ozone disinfection tank in parallel and is used for introducing O 3 Sterilizing and disinfecting the treated water;
the biological activated carbon 5 is arranged in a biological activated carbon pool, and granular activated carbon is preferably selected;
the first fan 6a is arranged on the first air duct 7a and is used for sucking and conveying the gas in the ozone disinfection tank;
the second fan 6b, the third fan 6c and the fourth fan 6d are arranged on three branch pipes of the third air duct 7c and are used for sucking and conveying gas generated in the biological activated carbon tank, introducing the gas into the aerobic tank for reaction and then entering the anaerobic tank for fermentation;
the second check valve 8b is arranged on the water conveying pipeline of the water inlet 14 of the lift pump, so that sewage in the electric floatation tank is prevented from flowing back to the water conveying pipeline;
the first check valve 8a is arranged on the pipeline of the first air duct 7a to prevent the gas from flowing back to the ozone disinfection tank;
the third check valve 8c is arranged on the pipeline of the second air duct 7b and prevents the gas from flowing back to the electric floating pool;
the first valve 9a and the water delivery pipe 16 are arranged at the bottom of the electric floatation tank and are used for delivering residual sewage in the tank to the biological activated carbon tank under the action of the lifting pump 17 after the electric floatation tank finishes working, and the first valve 9a controls the opening and closing state of the water delivery pipe 16;
the second valve 9b, the third valve 9c, the first water discharge port 10a and the second water discharge port 10b are arranged below the biological activated carbon tank, and the storage and discharge of sewage in the biological activated carbon tank and the replacement of biological activated carbon are regulated by controlling the opening and closing state of the valves;
the fourth valve 9d and the third water outlet 10c are arranged below the ozone disinfection tank, and the storage and the discharge of sewage in the ozone disinfection tank are adjusted by controlling the opening and closing states of the valves;
the first overflow weir 11a is arranged above the adjacent position of the electric floatation tank and the biological activated carbon tank, and treated water overflows from the electric floatation tank to the biological activated carbon tank;
the second overflow weir 11b is arranged above the adjacent position of the biological activated carbon tank and the ozone disinfection tank, the height of the second overflow weir is smaller than that of the overflow weir 11a, and treated water overflows from the biological activated carbon tank to the ozone disinfection tank through the second overflow weir;
the third overflow weir 11c is arranged at the tail end of the ozone disinfection tank, and treated water is discharged through the third overflow weir;
the folded plates 12 are arranged in the biological activated carbon tank and are spaced at a certain distance from each other, so that sewage flows in the biological activated carbon tank in a snake shape, the hydraulic retention time of the sewage in the tank is prolonged, the hydraulic condition is improved, and the biological treatment effect is ensured;
the vent 13 is arranged above the overflow weir 11a, so that the device is communicated with the outside, air circulation in the device is ensured, reduction and even inactivation of activity of aerobic microorganisms in the biological activated carbon tank caused by oxygen deficiency when aeration is not carried out is prevented, and the sewage treatment effect is reduced;
the water inlet 14 of the lift pump is arranged below one side of the electro-flotation tank, and the domestic sewage in the industrial park is pressurized by the lift pump after being treated by the grating and enters the electro-flotation tank through the water inlet 14 of the lift pump;
the water outlet 15 is arranged below one side of the ozone disinfection tank, and the treated water is discharged through the overflow of the third overflow weir (11 c).
Further, the electrode plates 1 are arranged on four sides of the wall of the electro-flotation tank, when domestic sewage enters the electro-flotation tank through the water inlet 14 of the lift pump, electrode reaction can occur on the electrode plates 1, and the domestic sewage is separated on the cathode and the anode respectivelyGoes out of H 2 And O 2 Bubbles with higher specific surface area and stronger adsorption capacity are generated, particulate impurities in water are attached to the bubbles and float to the water surface to form scum which is easier to remove, the scum is intercepted on the water surface by the first fine filter screen 3a and is absorbed and removed by a scum absorbing machine, meanwhile, heavy metal ions and some soluble pollutants thereof are directly reduced into heavy metal or other harmless or precipitated substances by electrolytic oxidation, the SS concentration is reduced, and the subsequent activated carbon adsorption is facilitated;
furthermore, the first gas distribution pipeline 4a is arranged at the bottom of the electric floating tank in parallel, and under the work of the first fan 6a, the gas in the ozone disinfection tank is conveyed into the electric floating tank through the first gas guide pipe 7a for aeration, and enters the O of the electric floating tank 3 The sewage treatment device can not only lift suspended pollutants in water, but also utilize the strong oxidizing property of the sewage to oxidize and decompose organic pollutants in domestic sewage, and purify the sewage by cooperating with the electric float, thereby being more beneficial to removing the organic pollutants;
further, the domestic sewage treated by the electric floating tank flows into a biological activated carbon tank through a first overflow weir 11a for further treatment;
further, the biological activated carbon 5 is preferably granular activated carbon, when sewage enters the biological activated carbon tank, organic matters in the sewage are attached to the biological activated carbon particles 5 under the adsorption action of the biological activated carbon particles 5, and meanwhile, a large number of aerobic microorganisms attached to the biological activated carbon particles 5 gradually form a biological membrane by taking the organic matters adsorbed on the surface of the activated carbon as nutrients, so that organic pollutants in the sewage are removed under the action of the biological membrane, and the COD concentration is reduced;
furthermore, the folded plates 12 are arranged in the biological activated carbon tank at a certain distance from each other, and are used for increasing the hydraulic retention time of the sewage in the tank and improving the hydraulic conditions, so that the efficiency of biochemical organic matters is greatly improved, the adsorption capacity of the activated carbon 5 is recovered while the organic matters adsorbed on the activated carbon are biochemically degraded by aeration, and the COD concentration is reduced;
further, the second gas distribution pipeline 4b is arranged at the bottom of the biological activated carbon tank, and under the operation of the fifth fan 6e, the gas generated in the electric floatation tank and the air entering the electric floatation tank through the vent 13 are sucked by the second gas guide pipe 7b and are conveyed to the biological activated carbon tank for aeration, so that the recycling of the gas in the electric floatation tank is realized;
furthermore, three branch pipes at the front end of the third air duct 7c are arranged above the biological activated carbon tank, and under the combined action of the second fan 6b, the third fan 6c and the fourth fan 6d, the gas overflowing from the water surface in the biological activated carbon tank is sucked and conveyed into the aerobic tank, so that the resource utilization of the gas is realized;
further, the domestic sewage treated by the biological activated carbon tank flows into the ozone disinfection tank through the second overflow weir 11b for sterilization and disinfection;
further, after the sewage enters the ozone disinfection tank, O 3 The sewage enters a disinfection tank through a third gas distribution pipeline 4c to disinfect and sterilize the sewage;
furthermore, the front end of the first air duct 7a is arranged at the upper part of the ozone disinfection tank, and unreacted O in the ozone disinfection tank is treated by the first fan 6a 3 O formed after the reaction 2 Other gases are sucked and conveyed into the electric floatation tank, and the sewage is purified by cooperating with the electric floatation, so that the recycling of the gases is realized;
further, the domestic sewage treated by the ozone disinfection tank is discharged through a water outlet flow 14 through a third overflow weir 11 c;
further, after the treatment tank stops operating, all the gas in the device is collected through the third air duct 7c under the action of the second fan 6b, the third fan 6c and the fourth fan 6d and is used in an anaerobic treatment process and a subsequent domestic sewage treatment process, meanwhile, the residual sewage in the electric floating tank with the first valve 9a opened is lifted and conveyed to the biological activated carbon tank for biological treatment through the water conveying pipe 16 under the action of the lifting pump 17, and the sewage in the biological activated carbon tank and the ozone disinfection tank is discharged through the first water discharge port 10a, the second water discharge port 10b and the third water discharge port 10c after the second valve 9b, the third valve 9c and the fourth valve 9d are opened.
A use method of a combined treatment tank for recycling reclaimed water in an industrial park comprises the following specific steps:
after coarse floating objects in the domestic sewage in the industrial park are removed through the grating, the domestic sewage is pressurized by the lift pump and enters the electro-flotation tank through the water inlet 14 of the lift pump.
When domestic sewage enters the electro-flotation tank through the water inlet 14 of the lift pump, the electrode plate 1 can electrolyze the entered domestic sewage and separate out H on the cathode and the anode respectively 2 And O 2 Bubbles with higher specific surface area and stronger adsorption capacity are generated, particulate impurities in water attach to the bubbles and float to the water surface to form a foam layer to form scum which is easier to remove, the scum is intercepted on the water surface by a first fine filter screen 3a and is sucked away and removed by a scum suction machine 2, sewage flows into a biological activated carbon pool from a first overflow weir 11a through the first fine filter screen 3a, meanwhile, gas generated in the electric floating pool and part of air entering the electric floating pool from a vent 13 are sucked under the action of a fifth fan 6e through a second air duct 7b and are conveyed into the biological activated carbon pool for aeration, and the recycling of the gas in the electric floating pool is realized; when the device stops operating, the residual domestic sewage in the electric floating tank is lifted and conveyed to the biological activated carbon tank for biological treatment by opening the first valve 9a through the water conveying pipe 16 under the action of the lifting pump 17.
After the domestic sewage treated by the electric floatation tank enters the biological activated carbon tank from the first overflow weir 11a, organic matters in the sewage are attached to the biological activated carbon particles 5 under the adsorption action of the biological activated carbon particles 5, meanwhile, a large number of aerobic microorganisms are attached to the biological activated carbon particles 5, organic matters adsorbed on the surfaces of the activated carbon particles are taken as nutrients to gradually form a biological membrane, organic pollutants in the water are removed under the action of the biological membrane, the folded plate 12 is used for increasing the hydraulic retention time of the sewage in the tank, improving the hydraulic condition, improving the efficiency of biochemical organic matters and reducing the COD concentration, and meanwhile, the second air distribution pipeline 4b arranged at the bottom of the biological activated carbon tank utilizes the gas generated in the electric floatation tank and partial air entering the electric floatation tank from the vent 13 to aerate the biological activated carbon tank under the action of the fifth fan 6e, the biochemical organic matter efficiency is improved, meanwhile, the recycling of gas resources is realized, gas generated in the biological activated carbon tank is pumped and conveyed to the aerobic treatment tank under the action of the second fan 6b, the third fan 6c and the fourth fan 6d through three branch pipes of the third air guide pipe 7c above the biological activated carbon tank, and is subjected to anaerobic fermentation treatment and then is subjected to a subsequent treatment process, so that the full recycling and resource utilization of the gas are realized. The second fine filter screen 3b and the third fine filter screen 3c are arranged and used for intercepting expanded floating biological activated carbon and preventing the biological activated carbon from flowing into the ozone disinfection tank to cause loss of the biological activated carbon and deterioration of effluent water quality, the domestic sewage after biological treatment overflows into the ozone disinfection tank from the second overflow weir 11b through the third fine filter screen 3c for sterilization and disinfection treatment, when the device stops running, the second valve 9b and the third valve 9c are opened, and the domestic sewage and the biological activated carbon which loses activity in the biological activated carbon tank are discharged through the first water discharge port 10a and the second water discharge port 10 b.
After the domestic sewage after biological treatment passes through the third fine filter screen 3c and overflows to the ozone disinfection tank from the second overflow weir 11b, O 3 The sewage enters the ozone disinfection tank through the third gas distribution pipeline 4c to be disinfected and disinfected, and the treated water is discharged from the third overflow weir 11c through the water outlet 15 and can be reused for greening irrigation, vehicle washing, road washing and the like of the garden. With unreacted O 3 O formed after the reaction 2 And other gases are sucked and conveyed into the electric floatation tank through the first air duct 7a under the action of the first fan 6a, the gases aerate the electric floatation tank through the first air distribution pipeline 4a, the domestic sewage is purified by cooperating with the electric floatation to realize recycling of the gases, and when the device stops operating, the fourth valve 9d is opened to discharge the domestic sewage in the electric floatation tank through the third water outlet 10 c.
In a word, the invention adopts the combined design, reduces the occupied area and improves the use efficiency of the device. In addition, the invention adopts the technology of the electric floating ozone synergistic purification and disinfection treatment, not only can effectively remove suspended dirt in domestic sewage, but also can carry out disinfection treatment on the domestic sewage, and the generated gas has no toxic residue and can not pollute the environment, thereby being safe and environment-friendly and realizing green disinfection. In addition, the air duct and the fan that set up in this device can not only realize gaseous collection and transport, and the distribution pipeline that sets up simultaneously can also make gaseous secondary sewage treatment that realizes, improves gas resource utilization. After the device is finished, all gas in the device can be recycled and used in the sewage anaerobic treatment process, so that the full recycling and resource utilization of the gas are realized.
Compared with the traditional reclaimed water treatment facility in the industrial park, the reclaimed water reuse combined treatment pool in the industrial park designed by the invention has the following advantages:
(1) "modular design". The floor area of the reclaimed water recycling process facilities is reduced, the capital construction cost is reduced, and the construction investment is saved.
(2) "gas full recovery and resource utilization". The unreacted ozone in the ozone disinfection tank can be recycled to the electric floating tank for secondary treatment of sewage, and the ozone utilization rate is increased. The gas overflowing from the water surface in the electric floatation tank can be recycled into the biological activated carbon tank for aeration. During the period, all gas overflowing from the water surface of the biological activated carbon tank can be collected and conveyed to the aerobic tank and then enters the anaerobic tank, and finally clean energy CH is generated through anaerobic fermentation 4
(3) And (4) purifying by electric air flotation/ozone. H produced by electrolyzing domestic sewage 2 And O 2 The micro bubbles have strong adsorbability and can effectively remove suspended particles in water by matching with a slag suction machine. The ozone disinfection can rapidly diffuse the whole disinfection space, has no dead angle for disinfection, thoroughly disinfects, can kill bacteria propagules, spores, viruses, fungi and the like, and further improves the water quality. O is 3 After reaction or non-reaction, both become O 2 Or a single oxygen atom, does not have any toxic residue, can be matched with electric floatation to remove suspended particles in domestic sewage together, and oxidizes and reduces organic matters and heavy metal ions in water.
Drawings
FIG. 1 is a schematic view of a combined treatment tank for recycling reclaimed water in an industrial park.
FIG. 2 is a plan view of a combined treatment tank for recycling water in an industrial park.
FIG. 3 is a flow chart of sewage treatment in an industrial park
In the figure: 1 electrode plate, 2 slag suction machines, 3a first fine filter screen, 3b second fine filter screen, 3c third fine filter screen, 4a first air distribution pipeline, 4b second air distribution pipeline, 4c third air distribution pipeline, 5 biological activated carbon, 6a first fan, 6b second fan, 6c third fan, 6d fourth fan, 6e fifth fan, 7a first air guide pipe, 7b second air guide pipe, 7c third air guide pipe, 8a first check valve, 8b second check valve, 8c third check valve, 9a first valve, 9b second valve, 9c third valve, 9d fourth valve, 10a first drain, 10b second drain, 10c third drain, 11a first weir, 11b second weir, 11c third weir, 12 flap, 13 vent, 14 lift pump inlet, 15 outlet, 16 raceway, 17 lift pump.
Detailed Description
The figure shows a section view of a reclaimed water reuse combined treatment tank in an industrial park, and the reclaimed water reuse combined treatment tank in the industrial park is mainly composed of an electric floating tank, a biological activated carbon tank and an ozone disinfection tank.
The electric floating pond comprises a first water discharge port 10a, a first valve 9a, a first gas distribution pipeline 4a, an electrode plate 1, a slag suction machine 2, a first fine filter screen 3a and a first overflow weir 11 a. The industrial park domestic sewage is firstly treated by a grid, and after entering the electro-flotation tank through a water inlet 14 of a lift pump, the electrode plate 1 can electrolyze the sewage and separate out H with higher specific surface area and stronger adsorption capacity on a cathode and an anode respectively 2 And O 2 The bubbles, so that the particle impurities in the sewage can be attached to the surfaces of the bubbles and float to the water surface to form scum which is easy to remove, and the scum is sucked away and removed by the scum suction machine. During the process, scum is intercepted by the first fine filter screen 3a, sewage flows into the biological activated carbon tank from the first overflow weir 11a through the first fine filter screen 3a, and simultaneously, air in the electric floatation tank and air entering the electric floatation tank from the vent 13 are sucked through the second air duct 7b and conveyed into the biological activated carbon tank for aeration under the action of the fifth fan 6e, so that the recycling of gas resources is realized; when no sewage flows into the electric floating tank, the first valve 9a is opened, and the residual domestic sewage in the electric floating tank isIs lifted and conveyed into the biological activated carbon tank for biological treatment by the water conveying pipe 16 under the action of the lifting pump 17.
The biological activated carbon pool comprises a second water outlet 10b, a second valve 9b, a fourth fine filter screen 3d, a fourth gas distribution pipeline 4b, biological activated carbon 5, a second fine filter screen 3b, a folded plate 12, a third fine filter screen 3c and a second overflow weir 11 b. After the domestic sewage treated by the electro-flotation tank enters the biological activated carbon tank from the first overflow weir 11a, organic matters in the sewage are attached to the biological activated carbon 5 under the adsorption action of the biological activated carbon 5, and a large number of aerobic microorganisms attached to the biological activated carbon 5 can gradually form a biological film by taking the organic matters as nutrients, so that organic pollutants in the water can be removed under the action of the biological film, the folded plate 12 is used for increasing the hydraulic retention time of the sewage in the tank, improving the hydraulic conditions and ensuring the degradation effect of the organic matters, and simultaneously, the gas distribution pipeline 4b arranged at the bottom of the biological activated carbon tank utilizes the gas generated by the electro-flotation tank and partial air entering the electrical flotation tank from the vent 13 to aerate the biological activated carbon tank under the action of the fifth fan 6e, thereby improving the efficiency of biochemical organic matters and simultaneously realizing the recycling of gas resources, and the gas generated in the biological activated carbon tank is pumped and conveyed to the aerobic treatment tank under the action of the second fan 6b, the third fan 6c and the fourth fan 6d through three branch pipes of the third air duct 7c above the biological activated carbon tank, and is subjected to anaerobic fermentation treatment and then a subsequent treatment process, so that the full recovery and resource utilization of the gas are realized. The setting of second fine filter screen 3b, third fine filter screen 3c for the floating biological activity charcoal of interception inflation prevents that it from flowing into and causes biological activity charcoal to run off and go out water quality of water to worsen in the ozone disinfection pond, and domestic sewage after biological treatment passes through third fine filter screen 3c, overflows to the ozone disinfection pond by second weir 11b and carries out the disinfection and isolation processing. When the device is not operated, the second valve 9b and the third valve 9c are opened, and the domestic sewage and the inactivated biological activated carbon in the biological activated carbon tank can be discharged through the first water discharge port 10a and the second water discharge port 10 b.
The ozone disinfection pool comprises a third gas distribution pipeline 4c, a third water outlet 10c, a third valve 9c,And a third overflow weir 11 c. After the domestic sewage after biological treatment passes through the third fine filter screen 3c and overflows to the ozone disinfection tank from the second overflow weir 11b, O 3 The sewage enters the disinfection tank through the third gas distribution pipeline 4c to be disinfected and disinfected, and the treated water is discharged from the third overflow weir 11c through the water outlet 15 and can be reused for greening irrigation, vehicle flushing, road flushing and the like of the garden. With unreacted O 3 And O formed after the reaction 2 The sewage is sucked and conveyed into the electric floatation tank under the action of the first fan 6a, and the electric floatation tank is aerated through the first gas distribution pipeline 4a, so that the domestic sewage is purified by cooperation with the electric floatation, and the gas recycling is realized. When the apparatus stops operating, the fourth valve 9d is opened to discharge the remaining treated water in the ozone sterilizing bath through the third water discharge port 10 c.

Claims (2)

1. A reclaimed water recycling combined treatment tank in an industrial park is characterized by comprising an electric air flotation tank, a biological activated carbon tank, an ozone disinfection tank, a plate electrode (1), a slag suction machine (2), a fine filter screen, a gas distribution pipeline, biological activated carbon (5), a fan, a gas guide pipe, a check valve, a water outlet, an overflow weir, a folded plate (12), a vent (13), a lift pump water inlet (14), a water outlet (15), a water pipe (16) and a lift pump (17) which are sequentially connected;
the fine filter screens comprise a first fine filter screen (3a), a second fine filter screen (3b) and a third fine filter screen (3 c); the gas distribution pipeline comprises a first gas distribution pipeline (4a), a second gas distribution pipeline (4b) and a third gas distribution pipeline (4 c); the fan comprises a first fan (6a), a second fan (6b), a third fan (6c), a fourth fan (6d) and a fifth fan (6 e); the air duct comprises a first air duct (7a), a second air duct (7b) and a third air duct (7 c); the check valves comprise a first check valve (8a), a second check valve (8b) and a third check valve (8 c); the valves comprise a first valve (9a), a second valve (9b), a third valve (9c) and a fourth valve (9 d); the water discharge openings comprise a first water discharge opening (10a), a second water discharge opening (10b) and a third water discharge opening (10 c); the overflow weir comprises a first overflow weir (11a), a second overflow weir (11b) and a third overflow weir (11 c);
the electrode plates (1) are arranged on the four side tank walls of the electric floatation tank;
the first fine filter screen (3a) is arranged at a water outlet at the upper right of the electro-flotation tank and used for intercepting suspended pollutants; the second fine filter screen (3b) is arranged in the biological activated carbon pool and is used for intercepting expanded floating biological activated carbon; the third fine filter screen (3c) is arranged at a water outlet at the upper right of the biological activated carbon tank and is used for intercepting the biological activated carbon and preventing the biological activated carbon from flowing into the ozone disinfection tank to cause loss of the biological activated carbon and deterioration of effluent quality;
the slag suction machine (2) is arranged above the position close to the first fine filter screen (3a) and is used for removing suspended dirt floating on the water surface of the electric floating pool;
the first gas distribution pipeline (4a) is arranged at the bottom of the electric floating tank in parallel, the first fan (6a) works to convey gas in the ozone disinfection tank to the electric floating tank for aeration through the first gas guide pipe (7a) connected to the upper part of the ozone disinfection tank, and the recycled O 3 The sewage is purified by cooperating with the electric floatation, so that the recycling of gas is realized, and the utilization rate of ozone is improved;
the second gas distribution pipeline (4b) is arranged at the bottom of the biological activated carbon tank in parallel, and under the action of a fifth fan (6e), gas generated in the electric floatation tank and air entering the electric floatation tank through the air vent (13) are sucked by a second air guide pipe (7b) and conveyed to the biological activated carbon tank for aeration, so that the recycling of the gas in the electric floatation tank is realized;
the third gas distribution pipeline (4c) is arranged at the bottom of the ozone disinfection tank in parallel and is used for introducing O 3 Sterilizing and disinfecting the treated water;
the biological activated carbon (5) is arranged in the biological activated carbon pool;
the first fan (6a) is arranged on the first air duct (7a) and is used for sucking and conveying gas in the ozone disinfection tank;
the second fan (6b), the third fan (6c) and the fourth fan (6d) are arranged on three branch pipes of the third air guide pipe (7c) and are used for sucking and conveying gas generated in the biological activated carbon tank, introducing the gas into the aerobic tank for reaction, and then entering the anaerobic tank for fermentation;
the second check valve (8b) is arranged on the water conveying pipeline of the water inlet (14) of the lift pump, so that the sewage in the electro-flotation tank is prevented from flowing back to the water conveying pipeline;
the first check valve (8a) is arranged on the pipeline of the first air duct (7a) to prevent the gas from flowing back to the ozone disinfection tank;
the third check valve (8c) is arranged on the pipeline of the second air duct (7b) to prevent the gas from flowing back to the electric floating pool;
the first valve (9a) and the water delivery pipe (16) are arranged at the bottom of the electric floatation tank and are used for conveying residual sewage in the tank to the biological activated carbon tank under the action of a lifting pump (17) after the electric floatation tank finishes working, and the first valve (9a) controls the opening and closing state of the water delivery pipe (16);
the second valve (9b), the third valve (9c), the first water discharge port (10a) and the second water discharge port (10b) are arranged below the biological activated carbon tank, and the storage and discharge of sewage in the biological activated carbon tank and the replacement of biological activated carbon are regulated by controlling the opening and closing state of the valves;
the fourth valve (9d) and the third water outlet (10c) are arranged below the ozone disinfection tank, and the storage and the discharge of sewage in the ozone disinfection tank are adjusted by controlling the opening and closing states of the valves;
the first overflow weir (11a) is arranged above the adjacent position of the electric floatation tank and the biological activated carbon tank, and treated water overflows from the electric floatation tank to the biological activated carbon tank through the first overflow weir;
the second overflow weir (11b) is arranged above the adjacent position of the biological activated carbon tank and the ozone disinfection tank, the height of the second overflow weir is smaller than that of the overflow weir (11a), and the treated water overflows from the biological activated carbon tank to the ozone disinfection tank;
the third overflow weir (11c) is arranged at the tail end of the ozone disinfection pool, and the treated water is discharged through the third overflow weir;
the folded plates (12) are arranged in the biological activated carbon tank and are spaced at a certain distance from each other, so that sewage flows in the biological activated carbon tank in a snake shape, the retention time of the sewage in the tank is prolonged, the hydraulic condition is improved, and the biological treatment effect is ensured;
the vent (13) is arranged above the overflow weir (11a) to ensure that the device is communicated with the outside, ensure the air circulation in the device, prevent aerobic microorganisms in the biological activated carbon tank from activity reduction and even inactivation caused by oxygen deficiency when the aerobic microorganisms are not aerated, and reduce the sewage treatment effect;
the water inlet (14) of the lift pump is arranged below one side of the electro-flotation tank, and the domestic sewage in the industrial park is pressurized by the lift pump after being treated by the grating and enters the electro-flotation tank through the water inlet (14) of the lift pump;
the water outlet (15) is arranged below one side of the ozone disinfection tank, and the treated water is discharged through the overflow of the third overflow weir (11 c).
2. The use method of the combined treatment tank for recycling water in the industrial park, which is disclosed by claim 1, is characterized by comprising the following steps:
after coarse floating objects in domestic sewage in an industrial park are removed by a grating, the domestic sewage is pressurized by a lift pump and enters an electric air flotation tank through a water inlet (14) of the lift pump;
when domestic sewage enters the electro-flotation tank through a water inlet (14) of the lift pump, the electrode plate (1) can electrolyze the entering domestic sewage, and H is separated out on the cathode and the anode respectively 2 And O 2 Bubbles with higher specific surface area and stronger adsorption capacity are generated, particulate impurities in water attach to the bubbles and float to the water surface to form a foam layer to form scum which is easier to remove, the scum is intercepted on the water surface by a first fine filter screen (3a) and is sucked away and removed by a scum suction machine (2), sewage flows into a biological activated carbon tank from a first overflow weir (11a) through the first fine filter screen (3a), and simultaneously gas generated in the electric floating tank and part of air entering the electric floating tank from a vent (13) are sucked and conveyed into the biological activated carbon tank for aeration under the action of a fifth fan (6e) through a second air duct (7b), so that the recycling of the gas in the electric floating tank is realized; when the device stops operating, the residual domestic sewage in the electric floating pond is driven by the lifting pump (17) through the water conveying pipe (16) by opening the first valve (9a)Lifting and conveying the mixture into a biological activated carbon tank for biological treatment;
after the domestic sewage treated by the electric air flotation tank enters the biological activated carbon tank from the first overflow weir (11a), organic matters in the sewage are attached to the biological activated carbon particles (5) under the adsorption action of the biological activated carbon particles (5), meanwhile, a large number of aerobic microorganisms are attached to the biological activated carbon particles (5), organic matters adsorbed on the surfaces of the activated carbon are taken as nutrients to gradually form a biological membrane, organic pollutants in the water are removed under the action of the biological membrane, the folded plate (12) is used for increasing the hydraulic retention time of the sewage in the tank, improving the hydraulic condition, improving the efficiency of the biochemical organic matters and reducing the COD concentration, and meanwhile, a second air distribution pipeline (4b) arranged at the bottom of the biological activated carbon tank utilizes the gas generated from the electric air flotation tank and partial air entering the electric air flotation tank from the vent (13) to aerate the biological activated carbon tank under the action of a fifth fan (6e), the biochemical organic matter efficiency is improved, meanwhile, the recycling of gas resources is realized, gas generated in the biological activated carbon pool is pumped and conveyed to the aerobic treatment pool under the action of the second fan (6b), the third fan (6c) and the fourth fan (6d) through three branch pipes of a third gas guide pipe (7c) above the biological activated carbon pool, and the gas is subjected to anaerobic fermentation treatment and then is connected with a subsequent treatment process, so that the full recycling and resource utilization of the gas are realized; the second fine filter screen (3b) and the third fine filter screen (3c) are arranged and used for intercepting expanded and floated biological activated carbon and preventing the biological activated carbon from flowing into the ozone disinfection tank to cause loss of the biological activated carbon and deterioration of effluent water quality, the domestic sewage after biological treatment overflows into the ozone disinfection tank from the second overflow weir (11b) through the third fine filter screen (3c) for sterilization and disinfection treatment, and when the device stops running, the second valve (9b) and the third valve (9c) are opened, so that the domestic sewage and the biological activated carbon which are lost activity in the biological activated carbon tank are discharged through the first water outlet (10a) and the second water outlet (10 b);
after the domestic sewage after biological treatment passes through a third fine filter screen (3c) and overflows from a second overflow weir (11b) to an ozone disinfection tank, O 3 Enters an ozone disinfection tank through a third gas distribution pipeline (4c) to disinfect and disinfect the sewage, and the treated water overflows from a third placeThe flowing weir (11c) is discharged through the water outlet (15) and can be reused for greening irrigation, vehicle flushing and road flushing in the garden; with unreacted O 3 O formed after the reaction 2 And other gases are sucked through the first air duct (7a) under the action of the first fan (6a) and are conveyed into the electro-flotation tank, the gas is aerated for the electro-flotation tank through the first gas distribution pipeline (4a) and purifies domestic sewage in cooperation with the electro-flotation tank to realize recycling of the gas, and when the device stops operating, the fourth valve (9d) is opened to discharge the domestic sewage in the electro-flotation tank through the third water outlet (10 c).
CN202210413276.7A 2022-04-20 2022-04-20 Reclaimed water reuse combined treatment pool in industrial park and use method thereof Active CN114890615B (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5256299A (en) * 1990-07-02 1993-10-26 International Environmental Systems, Inc., Usa Method and apparatus for liquid treatment
US20020179514A1 (en) * 2001-04-26 2002-12-05 Anderson Harold Randolph Method and apparatus for recovery of waste water
CN2564549Y (en) * 2002-09-10 2003-08-06 深圳市东江环保股份有限公司 Electrical float device for treating sewage
US20110031187A1 (en) * 2007-08-30 2011-02-10 Jong Seob Shim Water treatment system and method using high pressure advanced oxidation process with unreacted ozone reusing
WO2019130053A1 (en) * 2017-12-27 2019-07-04 Suez Groupe Wastewater treatment system and method for combined ozone and biological filters
CN112744965A (en) * 2021-01-25 2021-05-04 西南林业大学 Inclined plate pipe-electric air floatation and filtration integrated device and sewage treatment method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5256299A (en) * 1990-07-02 1993-10-26 International Environmental Systems, Inc., Usa Method and apparatus for liquid treatment
US20020179514A1 (en) * 2001-04-26 2002-12-05 Anderson Harold Randolph Method and apparatus for recovery of waste water
CN2564549Y (en) * 2002-09-10 2003-08-06 深圳市东江环保股份有限公司 Electrical float device for treating sewage
US20110031187A1 (en) * 2007-08-30 2011-02-10 Jong Seob Shim Water treatment system and method using high pressure advanced oxidation process with unreacted ozone reusing
WO2019130053A1 (en) * 2017-12-27 2019-07-04 Suez Groupe Wastewater treatment system and method for combined ozone and biological filters
CN112744965A (en) * 2021-01-25 2021-05-04 西南林业大学 Inclined plate pipe-electric air floatation and filtration integrated device and sewage treatment method

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