CN107445409A - Industrial wastewater Treatment by Photocatalysis Oxidation reclamation set and technique - Google Patents
Industrial wastewater Treatment by Photocatalysis Oxidation reclamation set and technique Download PDFInfo
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- CN107445409A CN107445409A CN201710833638.7A CN201710833638A CN107445409A CN 107445409 A CN107445409 A CN 107445409A CN 201710833638 A CN201710833638 A CN 201710833638A CN 107445409 A CN107445409 A CN 107445409A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/14—NH3-N
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/16—Total nitrogen (tkN-N)
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/04—Flow arrangements
- C02F2301/046—Recirculation with an external loop
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/308—Biological phosphorus removal
Abstract
The invention discloses a kind of industrial wastewater Treatment by Photocatalysis Oxidation reclamation set and technique, the industrial wastewater Treatment by Photocatalysis Oxidation reclamation set includes：Regulating reservoir, hydrolysis acidification pool, biochemical reaction tank, sedimentation basin, sand filtering device, photocatalytic oxidation device and the clear water reserviors being sequentially communicated.Pass through the addition of photochemical catalytic oxidation core process, form it is a kind of it is new integrate industrial wastewater processing up to standard and Treated sewage reusing industrial wastewater Treatment by Photocatalysis Oxidation, reuse technology and device, Industrial Wastewater Treatment and the reuse in the fields such as papermaking, printing and dyeing, pharmacy, chemical industry can be applied to, there is very wide application market.
Description
Technical field
The invention belongs to sewage treatment area, is filled more particularly, to a kind of industrial wastewater Treatment by Photocatalysis Oxidation reuse
Put and technique.
Background technology
Industrial wastewater includes production waste water and production waste, refers to caused waste water and waste liquid in industrial processes, its
In contain caused pollutant in the industrial production materials, intermediate product, byproduct and the production process that outflow with water.Produced
The water discharged in journey.Industrial wastewater has the characteristics that variation water quality is larger, pollutant kind is complicated, difficult, traditional pure life
The processing up to standard of industrial wastewater can not often be realized by changing process route.As industrial continuous development and national environmental protection will
The continuous improvement asked, a kind of technique for treating industrial wastewater efficiently, economic, stable is invented, just become industrial wastewater treatment neck
The new difficult point in domain and focus.
Meanwhile be becoming tight in global water resources day with water pollution aggravate in the case of, the processing up to standard of industrial wastewater and return
Apparatus is of great significance.The reclaimed water obtained by handling industrial wastewater can be widely applied to municipal afforestation, vehicle
Rinse, the field such as building interior is resurveyed, landscape water and industrial cooling water.Therefore, the processing and reuse up to standard of industrial wastewater
The overall economic efficiency that water resource utilizes can be greatly improved.
It is therefore desirable to research and develop a kind of industrial wastewater Treatment by Photocatalysis Oxidation reclamation set and work efficiently, economic, stable
Skill.
The content of the invention
The present invention proposes a kind of industrial wastewater Treatment by Photocatalysis Oxidation reclamation set and technique, passes through photochemical catalytic oxidation core
The addition of heart technique, form a kind of new up to standard handle of industrial wastewater that integrate and urged with the industrial wastewater light of Treated sewage reusing
Change oxidation processes, reuse technology and device, can be applied to the Industrial Wastewater Treatments in field such as papermaking, printing and dyeing, pharmacy, chemical industry and
Reuse, there is very wide application market.
To achieve these goals, a kind of industrial wastewater Treatment by Photocatalysis Oxidation reuse is provided according to an aspect of the present invention
Device, the device include：The regulating reservoir that is sequentially communicated, hydrolysis acidification pool, biochemical reaction tank, sedimentation basin, sand filtering device, photocatalysis
Oxidation unit and clear water reserviors.
A kind of industrial wastewater Treatment by Photocatalysis Oxidation reuse technology is provided according to another aspect of the present invention, the technique bag
Include：1) industrial wastewater enters regulating reservoir, and water quality and quantity regulation is carried out to waste water and pH value adjusts；
2) waste water of regulating reservoir discharge enters hydrolysis acidification pool, and waste water is pre-processed, adjusts giving birth to for industrial wastewater
The property changed；
3) water outlet of hydrolysis acidification pool enters biochemical reaction device, removes COD, ammonia nitrogen, total nitrogen and total phosphorus in waste water；
4) waste water after being handled by biochemical reaction device enters sedimentation basin, and the thing containing sludge settling in waste water dams in precipitation
In pond, supernatant enters photocatalytic oxidation device after sand filtering device filters, and oxidation processes are carried out to waste water, further removes useless
COD in water；
5) water outlet up to standard is handled by photocatalysis oxidation reaction apparatus and enters clear water reserviors, rear reuse.
The beneficial effects of the present invention are：The industrial wastewater Treatment by Photocatalysis Oxidation reclamation set of the present invention passes through regulation
Pond, hydrolysis acidification pool, biochemical reaction tank, sedimentation basin, sand filtering device, photocatalytic oxidation device and clear water reserviors setting can be to big
Part industrial wastewater, such as papermaking, printing and dyeing, pharmacy, wastewater from chemical industry handle and reuse, meets production and environmental requirement, and
And each device employed in the present invention can not meet the purification requirement of water when being used alone, only combining and pressing specifically
After order use water can be made to reach the requirement reused, have it is easy to operate, stable water outlet, operating cost are more low excellent
Point.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Brief description of the drawings
Exemplary embodiment of the invention is described in more detail in conjunction with the accompanying drawings, it is of the invention above-mentioned and its
Its purpose, feature and advantage will be apparent, wherein, in exemplary embodiment of the invention, identical reference number
Typically represent same parts.
Fig. 1 shows industrial wastewater Treatment by Photocatalysis Oxidation reclamation set schematic diagram according to an embodiment of the invention.
Fig. 2 shows industrial wastewater Treatment by Photocatalysis Oxidation recovering process flow according to an embodiment of the invention
Figure.
Description of reference numerals：
1st, regulating reservoir；2nd, hydrolysis acidification pool；3rd, biochemical reaction tank；4th, sedimentation basin；5th, sand filtering device；6th, photocatalytic-oxidation is disguised
Put；7th, clear water reserviors；8th, thick, fine fack；9th, sludge concentration tank；10th, sludge dehydration device；11st, intermediate pool；12nd, air blower；A1、
Waste water lifting pump；A2, elevator pump；A3, reflux pump；A4, intermediate pool elevator pump；A5, catalyst reflux pump；A6, film suction pump；
A7, backwashing pump；A8, sludge lifting pump；A9, clear water elevator pump；A10, sludge reflux pump；A11, sludge pump；B1, PAM dosing
Device；B2, film backwash chemicals dosing plant；B3, NaClO chemicals dosing plant.
Embodiment
The preferred embodiment of the present invention is described in more detail below.Although the following describe being preferable to carry out for the present invention
Mode, however, it is to be appreciated that may be realized in various forms the present invention without should be limited by embodiments set forth herein.Phase
Instead, there is provided these embodiments be in order that the present invention is more thorough and complete, and can be by the scope of the present invention intactly
It is communicated to those skilled in the art.
According to a kind of industrial wastewater Treatment by Photocatalysis Oxidation reclamation set of the present invention, including：
The regulating reservoir that is sequentially communicated, hydrolysis acidification pool, biochemical reaction tank, sedimentation basin, sand filtering device, photocatalytic oxidation device
And clear water reserviors.
Specifically, the COD and colourity efficiently gone in water removal by photocatalysis oxidation reaction apparatus, and retain in water outlet
The microorganisms such as SS, Escherichia coli, it is not necessary to the which individually processing unit such as increase micro-filtration, ultrafiltration, guarantee system stable water outlet reach in addition
To the index of correlation of recycle-water, i.e. a unit realizes depth processing up to standard chemically and physically.
Preferably, in addition to sludge treatment equipment, sludge treatment equipment be communicated in hydrolysis acidification pool, sedimentation basin,
Sand filtering device and regulating reservoir, for receiving the outer blowdown mud of hydrolysis acidification pool, sedimentation basin and sand filtering device, and by going out after processing
Water is back to regulating reservoir.
Preferably, sludge treatment equipment includes sludge concentration tank and sludge dehydration device.
Preferably, photocatalytic oxidation device includes：Photocatalysis oxidation reaction pond, catalyst separation device, light are urged
Oxidation pond is communicated in clear water reserviors by catalyst separation device.
Preferably, catalyst separation device includes：Film filter, catalyst backflow and screening plant, catalysis
Agent backflow and screening plant are used to the catalyst of retention being back in photocatalysis oxidation reaction pond, and film filter is used to go out
Water is promoted to clear water reserviors by film suction pump.
Preferably, anaerobic zone, anoxic zone and aerobic zone and reflux pump are disposed with biochemical reaction tank, it is aerobic
Area is communicated in anoxic zone by reflux pump.
Preferably, in addition at least one of following device：
Elevator pump, it is connected with hydrolysis acidification pool entrance；
Intermediate pool elevator pump and intermediate pool, it is connected with sand filtering device entrance；
Sludge lifting pump, it is connected with hydrolysis acidification pool, biochemical reaction tank and sand filtering device；
Pipeline and backwashing pump, backwash pipeline connection clear water reserviors and sand filtering device are backwashed, is provided with backwash
Pump, for cleaning sand filtering device；
Sludge reflux pump, for sedimentation basin sludge reflux to biochemical reaction tank entrance；
Catalyst reflux pump, the catalyst for retention are back in photocatalytic oxidation device；
Film suction pump, for the water outlet of photocatalytic oxidation device to be promoted into clear water reserviors.
Preferably, in addition at least one of following device：
Film backwash chemicals dosing plant, is arranged in photocatalysis oxidation reaction apparatus；
PAM chemicals dosing plants, for device of sludge dosing；
NaClO chemicals dosing plants, sterilized for clear water reserviors；
Air blower, it is connected with biochemical reaction tank and photocatalysis oxidation reaction apparatus.
A kind of industrial wastewater Treatment by Photocatalysis Oxidation reuse technology is provided according to another aspect of the present invention, including：
1) industrial wastewater enters regulating reservoir, and water quality and quantity regulation is carried out to waste water and pH value adjusts；
2) waste water of regulating reservoir discharge enters hydrolysis acidification pool, and waste water is pre-processed, adjusts giving birth to for industrial wastewater
The property changed；
3) water outlet of hydrolysis acidification pool enters biochemical reaction device, removes COD, ammonia nitrogen, total nitrogen and total phosphorus in waste water；
4) waste water after being handled by biochemical reaction device enters sedimentation basin, and the thing containing sludge settling in waste water dams in precipitation
In pond, supernatant enters photocatalytic oxidation device after sand filtering device filters, and oxidation processes are carried out to waste water, further removes useless
COD in water；
5) water outlet up to standard is handled by photocatalysis oxidation reaction apparatus and enters clear water reserviors, rear reuse.
Specifically, after industrial wastewater is in a manner of flowing automatically by thick, fine fack, regulating reservoir is flowed into, is adjusted by regulating reservoir useless
The water quality of the water of water and homogeneous waste water, the water outlet that regulating reservoir is put are input to hydrolysis acidification pool via elevator pump.
Specifically, the waste water after regulating reservoir processing, enters hydrolysis acidification pool, by anaerobic condition by way of lifting
Under biological hydrolysis effect, the macromolecular substances of difficult degradation, be decomposed into degradable small-molecule substance, adjust industrial wastewater
Biodegradability.
Specifically, the waste water gravity flow after the processing of hydrolysis acidification pool device enters biochemical reaction tank, biochemical reaction tank by according to
Anaerobic zone, anoxic zone and the aerobic zone of secondary setting, to polluters such as COD, BOD in industrial wastewater, ammonia nitrogen, total nitrogen, total phosphorus
It is removed.
Specifically, the water outlet gravity flow of biochemical reaction tank enters sedimentation basin, by sedimentation basin that sludge in waste water etc. is heavy
Starch is trapped in sedimentation basin, and is discharged by the mud discharging mouth of sedimentation basin bottom, and supernatant filters via elevator pump and sand filtering device
After input photocatalysis oxidation reaction apparatus.
Specifically, the water outlet of sand filtering device enters photocatalysis oxidation reaction apparatus, passes through photocatalytic oxidation device depth
The COD and colourity gone in water removal, ensure that effluent index reaches discharge or reuse standard.The water outlet of photocatalytic reaction device enters
Into clear water reserviors, reuse after disinfectant is added.
Preferably, device also includes sludge treatment equipment, and sludge treatment equipment is communicated in hydrolysis acidification pool, precipitation
Pond, sand filtering device and regulating reservoir, sludge treatment equipment include sludge concentration tank and sludge dehydration device；
The technique also includes：
6) after sludge caused by being arranged outside hydrolysis acidification pool, sedimentation basin and sand filtering device enters sludge concentration tank, by dirt
To moisture content below 80%, outward transport focuses on mud dehydration device.
Embodiment
Fig. 1 shows industrial wastewater Treatment by Photocatalysis Oxidation reclamation set schematic diagram according to an embodiment of the invention.
Fig. 2 shows industrial wastewater Treatment by Photocatalysis Oxidation recovering process flow figure according to an embodiment of the invention.
As Figure 1-Figure 2, there is provided a kind of industrial wastewater Treatment by Photocatalysis Oxidation reclamation set, including：
Regulating reservoir 1, hydrolysis acidification pool 2, biochemical reaction tank 3, sedimentation basin 4, sand filtering device 5, the photocatalytic-oxidation being sequentially communicated
6 and clear water reserviors 7 are put in makeup.
Wherein, in addition to sludge treatment equipment, sludge treatment equipment are communicated in hydrolysis acidification pool 2, sedimentation basin 4, sand filtration dress
5 and regulating reservoir 1 are put, for receiving the outer blowdown mud of hydrolysis acidification pool 2, sedimentation basin 2 and sand filtering device 5, and by going out after processing
Water is back to regulating reservoir 1 via clear water elevator pump A9.
Wherein, sludge treatment equipment includes sludge concentration tank 9 and sludge dehydration device 10.
Wherein, photocatalytic oxidation device 6 includes：Photocatalysis oxidation reaction pond, catalyst separation device, photochemical catalytic oxidation are anti-
Ying Chi is communicated in clear water reserviors 7 by catalyst separation device.
Wherein, catalyst separation device includes：Film filter, catalyst backflow and screening plant, catalyst backflow and
Screening plant is used to the catalyst of retention being back in photocatalysis oxidation reaction pond, and film filter is used to water outlet passing through film
Suction pump is promoted to clear water reserviors 7.
Wherein, anaerobic zone, anoxic zone and aerobic zone and reflux pump A3, aerobic zone are disposed with biochemical reaction tank to pass through
Reflux pump A3 is communicated in anoxic zone.
Wherein, in addition at least one of following device：
Elevator pump A2, it is connected with the entrance of hydrolysis acidification pool 2；
Intermediate pool elevator pump A4 and intermediate pool 11, it is connected with the entrance of sand filtering device 5；
Sludge pump A11, it is connected with hydrolysis acidification pool 2, biochemical reaction tank 3 and sand filtering device 5；
Pipeline and backwashing pump A7, backwash pipeline connection clear water reserviors 7 and sand filtering device 5 are backwashed, is provided with anti-
Flushing pump A7, for cleaning sand filtering device 5；
Sludge reflux pump A10, for sedimentation basin 4 sludge reflux to biochemical reaction tank 3 entrance；
Catalyst reflux pump A5, the catalyst for retention are back in photocatalytic oxidation device 6；
Film suction pump A6, for the water outlet of photocatalytic oxidation device 6 to be promoted into clear water reserviors 7.
In use, after industrial wastewater by waste water lifting pump A1, is lifted into thick, fine fack 8, waste water lifting pump 1 is flowed into,
The water quality of the water of waste water and homogeneous waste water is adjusted by waste water lifting pump 1, the water outlet of regulating reservoir 1 is input to via elevator pump A2
Hydrolysis acidification pool 2.
Waste water after the processing of regulating reservoir 1, entered by way of lifting and hydrolyze sour pond 2, pass through life under anaerobic
Thing hydrolysis, the macromolecular substances of difficult degradation, degradable small-molecule substance is decomposed into, improves giving birth to for industrial wastewater
The property changed.The end of hydrolysis acidification pool 2 is connected with spoil disposal pipeline, and sludge is discharged into sludge concentration tank 9 by sludge pump A11.
Waste water gravity flow after the processing of hydrolysis acidification pool 2 enters biochemical reaction tank 3, biochemical reaction tank 3 include successively anaerobic zone,
Anoxic zone and aerobic zone, in the technological process, BOD5, SS and existing nitrogen and phosphorus will be removed one by one in a variety of manners.Should
In biochemical reaction tank 3 in the activated sludge of biological carbon and phosphorous removal system, flora is mainly by nitrifier and denitrifying bacterium, polyP bacteria group
Into.In aerobic section, nitrobacteria by the ammonia nitrogen in becoming a mandarin and organic nitrogen ammonification into ammonia nitrogen, acted on, converted by biological nitration
Into nitrate；In anoxic section, the interior nitrate brought into that flows back by biological denitrification, is changed into nitrogen by denitrifying bacteria
Escape into air, so as to reach the purpose of denitrogenation；In anaerobism section, polyP bacteria release phosphorus, and absorb lower fatty acid etc. and easily drop
The organic matter of solution；And in aerobic section, polyP bacteria excess absorbs phosphorus, and by the discharge of excess sludge, phosphorus is removed.Running
The sludge and nitrification liquid of middle aerobic zone are back to anoxic zone by the A3 that flows back with 100% to 200% ratio.The dirt of sedimentation basin 4
Mud is back to anaerobism section front end by sludge reflux pump A10, and reflux ratio is 10% to 100%, can also be according to actual motion feelings
Condition determines final return sludge ratio.
The water outlet gravity flow of biochemical reaction tank 3 enters sedimentation basin 4, by sedimentation basin 4 sediments such as the sludge in waste water
It is trapped in sedimentation basin 4, and is discharged by the mud discharging mouth of the bottom of sedimentation basin 4.The sludge part of sedimentation basin 4 passes through sludge reflux pump
A10 is back to the front end of biochemical reaction tank 3, and remainder sludge then enters sludge concentration tank 9 by sludge pump A11.Supernatant
Enter intermediate pool 11 and input photocatalytic oxidation device 6 after the filtering of sand filtering device 5 via intermediate pool elevator pump A4.Sand filtration fills
Put 5 and be connected with backwashing pump A7, when the material retained in sand filtering device is excessive, after filter pressure rise, backwashing pump will be passed through
A7, the water outlet for extracting clear water reserviors 7 are intake from the bottom of sand filtering device 5, backwashed, the sewage of backwash is discharged into by pipeline
In sludge concentration tank 9.
In photocatalysis oxidation reaction apparatus, photocatalytic oxidation device, catalyst separation device are included.Wherein, catalyst point
Film filter and catalyst backflow and screening plant are included from device.It is anti-that the water outlet of sand filtering device 5 enters photochemical catalytic oxidation
Device 6 is answered, in photocatalytic oxidation device 6, has added the photochemical catalyst that particle diameter is 10-1000nm, photochemical catalyst is by uviol lamp
Irradiation, catalysis produces hole and the hydroxyl radical free radical of strong oxidizing property, to the pollutant of difficult degradation in the sewage after biochemical treatment
Carry out oxidative degradation so that COD and colourity in water are reduced to below the discharge standard of design requirement.At photochemical catalytic oxidation
Water after reason is entered in catalyst separation device, and nano-catalyst particles are trapped in catalyst separation device by film filter
Interior, clear water is then entered in clear water reserviors 7 by film suction pump A6, and catalyst backflow and screening plant then lead to the catalyst of retention
Catalyst reflux pump A5 is crossed to be back in photocatalytic oxidation device 6.When membrane filtration rate device transmembrane pressure exceed limit value with
Afterwards, Membrane cleaning medicament (e.g., citric acid, oxalic acid, sodium hypochlorite etc.) will be injected by film backwash chemicals dosing plant B2, membrane module will be entered
Row cleaning, recovers membrane flux.
If the water outlet of photocatalytic oxidation device 6 is entered in clear water reserviors 7 due to variation water quality, is passed through NaClO chemicals dosing plants
B3 adds disinfectant, reuse after contact sterilizing.
Sludge in sludge concentration tank 9 by sludge lifting pump A8, enter in sludge dehydration device 10 be dehydrated to
After moisture content is less than 80%, outward transport focuses on disposal.According to the needs of sludge dewatering, can be thrown by PAM chemicals dosing plants B1
Add 1-100ppm PAM to improve the dewatering of sludge.The effluent recycling of dehydration device is to front end regulating reservoir 1.
Industrial wastewater index after being handled by industrial wastewater Treatment by Photocatalysis Oxidation reclamation set of the present invention meets《Sewage
It is discharged into town sewer water standard》(GB/T 31962-2015), leading indicator is as shown in table 1：
Table 1
Using said apparatus, the industrial wastewater Treatment by Photocatalysis Oxidation reuse technology in the present invention includes the following steps：
1) industrial wastewater after being lifted into thick, fine fack 8, flows into regulating reservoir 1, by regulating reservoir 1 by waste water lifting pump A1
To adjust the water quality of the water of waste water and homogeneous waste water, residence time of regulating reservoir 1 is 2-10 hours, the pH of the water outlet of regulating reservoir 1
Value stabilization is between 6-9.The water outlet of regulating reservoir 1 is input to hydrolysis acidification pool 2 via elevator pump A2.
2) waste water after regulating reservoir 1 is handled, enters hydrolysis acidification pool 2 by way of lifting, due to difficult in industrial wastewater
The COD accountings of degraded are higher, and the biodegradability of waste water is poor, acted on by biological hydrolysis under anaerobic, difficult degradation
Macromolecular substances, be decomposed into degradable small-molecule substance, improve the biodegradability of industrial wastewater.At hydrolysis acidification
After reason, the COD of sewage can be reduced to below 450mg/L from 500mg/L, while B/C ratios bring up to more than 0.3.Hydrolysis acidification pool 2
End be connected with spoil disposal pipeline, sludge is discharged into by sludge pump A11 by sludge concentration tank 9.
3) the waste water gravity flow after hydrolysis acidification pool 2 is handled enters biochemical reaction tank 3, and biochemical reaction tank 3 includes anaerobism successively
Area, anoxic zone and aerobic zone, in the technological process, BOD5, SS and existing nitrogen and phosphorus will be removed one by one in a variety of manners.
In the biochemical reaction tank 3 in the activated sludge of biological carbon and phosphorous removal system, flora is mainly by nitrifier and denitrifying bacterium, polyP bacteria
Composition.In aerobic section, nitrobacteria by the ammonia nitrogen in becoming a mandarin and organic nitrogen ammonification into ammonia nitrogen, acted on, turned by biological nitration
It is melted into nitrate；In anoxic section, the interior nitrate brought into that flows back by biological denitrification, is changed into nitrogen by denitrifying bacteria
Gas is escaped into air, so as to reach the purpose of denitrogenation；In anaerobism section, polyP bacteria release phosphorus, and it is easy to absorb lower fatty acid etc.
The organic matter of degraded；And in aerobic section, polyP bacteria excess absorbs phosphorus, and by the discharge of excess sludge, phosphorus is removed.It is biochemical anti-
The residence time for answering anaerobic zone in pond 3 is 0.5-2h, and the residence time of anoxic section is 1-4h, and the residence time of aerobic section is 6-
15h.The sludge of aerobic zone and nitrification liquid are flowed back by reflux pump A3 with 100% to 200% ratio in running.Sedimentation basin
4 sludge is back to anaerobism section front end by sludge reflux pump A10, and reflux ratio is 10% to 100%, according to practical operation situation
To determine final return sludge ratio.By the processing of biochemical reaction tank 3, the COD in sewage, ammonia nitrogen, total nitrogen, total phosphorus all obtains
Effective processing.
4) the water outlet gravity flow of biochemical reaction tank 3 enters sedimentation basin 4, and sludge in waste water etc. is precipitated by sedimentation basin 4
Thing is trapped in sedimentation basin, and is discharged by the mud discharging mouth of sedimentation basin bottom.COD≤120mg/L of water outlet is precipitated, SS is less than
30mg/L.A clarifier sludge part is back to the front end of biochemical reaction tank 3 by sludge reflux pump A10, and remainder sludge is then
Sludge concentration tank 9 is entered by sludge pump A11.Supernatant enters intermediate pool 11 via intermediate pool elevator pump A4 through sand filtration
Device 5 inputs photocatalytic oxidation device 6 after filtering.COD≤120mg/L of the water outlet of sand filtering device 5, SS are less than 10mg/L, ammonia nitrogen,
Total nitrogen, total phosphorus content is less than country《Urban wastewater treatment firm pollutant emission standard》(GB18918-2002) the one-level A marks in
It is accurate.Sand filtering device 5 is connected with backwashing pump A7,, will be logical after filter pressure rise when the material retained in sand filtering device 5 is excessive
Backwashing pump A7 is crossed, the water outlet for extracting clear water reserviors 7 is intake from the bottom of sand filtering device 5, is backwashed, the sewage of backwash leads to
Piping is discharged into sludge concentration tank 9.
5) water outlet of sand filtering device 5 enters photocatalytic oxidation device 6, and photochemical catalyst is produced by ultra violet lamp, catalysis
The hole of strong oxidizing property and hydroxyl radical free radical, oxidative degradation is carried out to the pollutant of difficult degradation in the sewage after biochemical treatment,
So that the COD and colourity in water are reduced to below the discharge standard of design requirement.Water after Treatment by Photocatalysis Oxidation enters
Into catalyst separation device, film filter is trapped in nano-catalyst particles in catalyst separation device, and clear water then leads to
Cross film suction pump A6 to enter in clear water reserviors 7, catalyst backflow and screening plant are then returned the catalyst of retention by catalyst
Stream pump A5 is back in photocatalytic oxidation device 6.COD of sewage after Treatment by Photocatalysis Oxidation is reduced to below 50mg/L,
Colourity is less than 30 times.And due to the presence of film filter in photocatalytic oxidation device 6, the turbidity of water outlet, Escherichia coli etc. refer to
Mark all meets recycle-water index, can direct reuse after sterilization.
6) sludge in sludge concentration tank 9 is entered in sludge dehydration device 10 and is dehydrated by sludge lifting pump A8
After being less than 80% to moisture content, outward transport focuses on disposal.According to the needs of sludge dewatering, can by PAM chemicals dosing plants B1 come
1-100ppmPAM is added to improve the dewatering of sludge.The effluent recycling of dehydration device is to front end regulating reservoir 1.
It is described above various embodiments of the present invention, described above is exemplary, and non-exclusive, and
It is not limited to disclosed each embodiment.In the case of without departing from the scope and spirit of illustrated each embodiment, for this skill
Many modifications and changes will be apparent from for the those of ordinary skill in art field.
Claims (10)
1. a kind of industrial wastewater Treatment by Photocatalysis Oxidation reclamation set, it is characterised in that at the industrial wastewater photochemical catalytic oxidation
Reason reclamation set includes：
The regulating reservoir that is sequentially communicated, hydrolysis acidification pool, biochemical reaction tank, sedimentation basin, sand filtering device, photocatalytic oxidation device and clear
Pond.
2. industrial wastewater Treatment by Photocatalysis Oxidation reclamation set according to claim 1, it is characterised in that also including sludge
Processing unit, the sludge treatment equipment is communicated in the hydrolysis acidification pool, sedimentation basin, sand filtering device and regulating reservoir, for connecing
Receive the outer blowdown mud of hydrolysis acidification pool, sedimentation basin and sand filtering device, and by the effluent recycling after processing to regulating reservoir.
3. industrial wastewater Treatment by Photocatalysis Oxidation reclamation set according to claim 2, it is characterised in that at the sludge
Reason device includes sludge concentration tank and sludge dehydration device.
4. industrial wastewater Treatment by Photocatalysis Oxidation reclamation set according to claim 1, it is characterised in that the photocatalysis
Oxidation unit includes：Photocatalysis oxidation reaction pond, catalyst separation device, the photocatalysis oxidation reaction pond pass through the catalysis
Agent separator is communicated in the clear water reserviors.
5. industrial wastewater Treatment by Photocatalysis Oxidation reclamation set according to claim 4, it is characterised in that catalyst separates
Device includes：Film filter, catalyst backflow and screening plant, the catalyst backflow and screening plant are used for retention
Catalyst is back in the photocatalysis oxidation reaction pond, and the film filter is used to water outlet being promoted to by film suction pump
Clear water reserviors.
6. industrial wastewater Treatment by Photocatalysis Oxidation reclamation set according to claim 1, it is characterised in that described biochemical anti-
Anaerobic zone, anoxic zone and aerobic zone and reflux pump are disposed with Ying Chi, the aerobic zone is communicated in described by reflux pump
Anoxic zone.
7. industrial wastewater Treatment by Photocatalysis Oxidation reclamation set according to claim 1, it is characterised in that also including following
At least one of device：
Elevator pump, it is connected with the hydrolysis acidification pool entrance；
Intermediate pool elevator pump and intermediate pool, it is connected with the sand filtering device entrance；
Sludge pump, it is connected with the hydrolysis acidification pool, biochemical reaction tank and sand filtering device；
Pipeline and backwashing pump are backwashed, the backwash pipeline connection clear water reserviors and sand filtering device, is provided with backwash
Pump, for cleaning sand filtering device；
Sludge reflux pump, for sedimentation basin sludge reflux to biochemical reaction tank entrance；
Catalyst reflux pump, the catalyst for retention are back in the photocatalytic oxidation device；
Film suction pump, for the water outlet of photocatalytic oxidation device to be promoted into clear water reserviors.
8. industrial wastewater Treatment by Photocatalysis Oxidation reclamation set according to claim 1, it is characterised in that also including following
At least one of device：
Film backwash chemicals dosing plant, is arranged in photocatalysis oxidation reaction apparatus；
PAM chemicals dosing plants, for device of sludge dosing；
NaClO chemicals dosing plants, sterilized for clear water reserviors；
Air blower, it is connected with biochemical reaction tank and photocatalysis oxidation reaction apparatus.
9. a kind of industrial wastewater Treatment by Photocatalysis Oxidation reuse technology, the industrial wastewater Treatment by Photocatalysis Oxidation reuse technology is being weighed
Profit requires to carry out in the industrial wastewater Treatment by Photocatalysis Oxidation reclamation set in 1-8 described in any one, and the technique includes：
1) industrial wastewater enters regulating reservoir, and water quality and quantity regulation is carried out to waste water and pH value adjusts；
2) waste water of regulating reservoir discharge enters hydrolysis acidification pool, and waste water is pre-processed, adjusts the biodegradability of industrial wastewater；
3) water outlet of hydrolysis acidification pool enters biochemical reaction device, removes COD, ammonia nitrogen, total nitrogen and total phosphorus in waste water；
4) waste water after being handled by biochemical reaction device enters sedimentation basin, and the thing containing sludge settling in waste water dams in sedimentation basin
Interior, supernatant enters photocatalytic oxidation device after sand filtering device filters, and carries out oxidation processes to waste water, further removes waste water
In COD；
5) water outlet up to standard is handled by photocatalysis oxidation reaction apparatus and enters clear water reserviors, rear reuse.
10. industrial wastewater Treatment by Photocatalysis Oxidation reuse technology according to claim 9, it is characterised in that described device
Also include sludge treatment equipment, the sludge treatment equipment is communicated in the hydrolysis acidification pool, sedimentation basin, sand filtering device and regulation
Pond, the sludge treatment equipment include sludge concentration tank and sludge dehydration device；
The technique also includes：
6) after sludge caused by being arranged outside the hydrolysis acidification pool, sedimentation basin and sand filtering device enters sludge concentration tank, by dirt
To moisture content below 80%, outward transport focuses on mud dehydration device.
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| CN112239303A (en) * | 2019-07-17 | 2021-01-19 | 南京凯旋化学科技有限公司 | Industrial wastewater catalytic oxidation treatment device |
| WO2021134875A1 (en) * | 2019-12-30 | 2021-07-08 | 北京高能时代环境技术股份有限公司 | Wastewater treatment device and treatment process for organic contaminated site |
| CN114291974A (en) * | 2021-12-31 | 2022-04-08 | 北京伟思创科技股份有限公司 | Photocatalytic oxidation treatment process for water for washing vehicle |
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