CN107814459A - A kind of biochemical ozone method for treating water and its processing unit - Google Patents

A kind of biochemical ozone method for treating water and its processing unit Download PDF

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Publication number
CN107814459A
CN107814459A CN201710978304.9A CN201710978304A CN107814459A CN 107814459 A CN107814459 A CN 107814459A CN 201710978304 A CN201710978304 A CN 201710978304A CN 107814459 A CN107814459 A CN 107814459A
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China
Prior art keywords
ozone
reactor
biochemistry
pool
water
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CN201710978304.9A
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Chinese (zh)
Inventor
张静
强璐
李鹏
孙斌
黄磊
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Shanghai Electric Group Corp
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Shanghai Electric Group Corp
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Priority to CN201710978304.9A priority Critical patent/CN107814459A/en
Publication of CN107814459A publication Critical patent/CN107814459A/en
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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
    • 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
    • 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
    • C02F1/24—Treatment of water, waste water, or sewage by flotation
    • 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
    • C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
    • 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
    • C02F2001/007—Processes including a sedimentation step
    • 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
    • C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2305/00—Use of specific compounds during water treatment
    • C02F2305/02—Specific form of oxidant
    • 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
    • C02F3/02—Aerobic processes
    • C02F3/12—Activated sludge processes
    • C02F3/1236—Particular type of activated sludge installations
    • C02F3/1268—Membrane bioreactor systems
    • 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
    • C02F3/28—Anaerobic digestion processes
    • 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

Abstract

The invention discloses its a kind of biochemical ozone method for treating water and its processing unit, step 1 sewage is handled into biochemistry pool；Step 2 sewage enters preceding ozone reactor after biochemistry pool is handled and reacted；The water part of ozone reactor flows back into ozone digestion pool before step 3, partly into rear ozone reactor；The part water outlet of ozone digestion pool is flowed back into after step 3 is handled, the biochemistry pool in the step 1 is back flowed into after decomposing completely；The part water outlet into rear ozone reactor in the step 3 is discharged after further aoxidizing.The present invention sets two ozone reactors, preceding ozone reactor, based on direct ozonidation, the complicated hard-degraded substance in bio-chemical effluent is oxidized to the material of easy biochemical degradation.Ozone reactor carries out thorough mineralising to organic matter, and rear ozone reactor can utilize the residual ozone in preceding ozone reactor water outlet, improve ozone utilization rate based on indirect ozonidation afterwards.

Description

A kind of biochemistry-ozone method for treating water and its processing unit
Technical field
The present invention relates to sewage treatment area, more particularly to a kind of biochemistry-ozone method for treating water and its processing unit.
Background technology
Wastewater from chemical industry has the problems such as water quality is complicated, and biodegradability is poor, and hardly degraded organic substance is more.Traditional materialized pretreatment + biochemistry is difficult to reach increasingly stricter discharge standard requirement, and biochemical process can not be by the complicated thing such as chloride, nitro, azacyclo- Matter is degraded, and its water outlet brings many persistent organisms into environment, causes serious environmental problem.Ozonation has Reaction condition is gentle, and secondary pollution is not produced in course of reaction, has splendid decolorizing effect and good and removes removal organic polluter Ability.Ozonidation is divided into direct oxidation and indirect oxidation.Direct oxidation has selectivity, can have complicated difficult degradation Machine mass degradation is the small-molecule substance of easy biochemical degradation；Indirect oxidation is mainly aoxidized with hydroxyl radical free radical, oxidation rate It hurry up, non-selectivity, oxidation is thoroughly.Researcher proposes to carry out advanced treating to conventional biochemical water outlet using Ozonation, such as equal Matter+filtering+catalytic ozonation advanced treatment process, homogeneous+ozone oxidation+coagulation advanced treatment process, in the two techniques Although the removal of hardly degraded organic substance can be strengthened in, the problem of ozone dosage is high, and power consumption is high, and operating cost is high be present. High for ozone dosage, operating cost is high, and researcher proposes to strengthen the indirect oxidation effect of ozone oxidation, such as heterogeneous catalysis The technique such as oxidation, ozone+hydrogen peroxide, ozone+ultraviolet, ozone+ultrasound, these reinforcement process have its value, but it drops to hardly possible The permineralization of organic matter is solved, and underuses the selectivity of ozone oxidation, the biodegradability spy of used water difficult to degradate can be improved Point, still suffers from the problem of cost is high.On the other hand, there is researcher to propose bio-chemical effluent using ozone+biological activated carbon, ozone+anaerobism Filter tank+UF membrane, ozone+BAF+ozone process carry out advanced treating, biological activated carbon, anaerobic filter, aeration life Material biochemical after ozone Oxidation Treatment is further processed in thing filter tank.Although above-mentioned waste water treatment process is to ozone oxygen Biochemical material has carried out further processing after change processing, but underuses the pond body of front end biochemistry pool, and floor space increases Greatly.And for some industrial wastewaters, after ozone oxidation open loop chain rupture, total nitrogen can rise, with national sewage discharge mark The raising of alignment request, total nitrogen also would is that one of water outlet Con trolling index, can not meet tightened up emission request.
The content of the invention
The present invention is solution above mentioned problem of the prior art, it is proposed that a kind of effluent quality is more preferable, total ozone dosage Reduce, reduce the biochemistry-ozone method for treating water and its processing unit of operating cost.
To achieve the above object, the present invention uses following technical scheme：
Present invention firstly provides a kind of biochemistry-ozone method for treating water, comprise the following steps：
Step 1
Sewage is handled into biochemistry pool.Biochemistry pool sets HRT according to influent quality, maximizes having for degraded bio-degradable Machine thing；
Step 2
Sewage enters preceding ozone reactor after biochemistry pool is handled and reacted, and regulation enters the ozone air inlet of preceding ozone reactor Amount and ozone concentration；
Step 3
The water part of preceding ozone reactor flows back into ozone digestion pool, partly into rear ozone reactor；Reflux ratio Required according to effluent quality, the capacity of the surface loading of second pond or MBR membrane modules determines；
Step 4
The part water outlet of the preceding ozone reactor of ozone digestion pool is flowed back into after step 3 is handled, its remnants dissolving is smelly Oxygen is decomposed in ozone digestion pool, and the biochemistry in the step 1 is back flowed into after remaining dissolved ozone decomposes completely Pond；The ozone digestion pool sets online dissolved ozone analyzer to enter dissolved ozone concentration monitor in water-filling；
Step 5
The part water outlet of the preceding ozone reactor into rear ozone reactor in the step 3 is in rear ozone reactor In further aoxidize and discharged after reaching discharge standard.
Preferably, the biochemistry pool in step 1, during using conventional biochemical pond, secondary clarifier effluent by filtering cloth filtering pool, The technique such as air supporting or cartridge filter or equipment remove SS；When the biochemistry pool uses MBR techniques, it is anti-that water outlet is directly entered ozone Answer device.
Preferably, the HRT of the preceding ozone reactor of the step 2 is 2-30min；The preceding ozone reaction of the step 2 The ozone dosage of device is 30~100mg/L.
Preferably, the reflux ratio of the step 3 is 30%-100%.
Preferably, the reflux point in the step 4 is arranged on anoxic pond.
Preferably, the HRT of the ozone digestion pool in the step 4 is 10-30min.
Preferably, the HRT in the step 5 is 15min-1h；Afterwards the ozone dosage scope of ozone reactor be 50~ 200mg/L。
Secondly the present invention provides a kind of biochemistry-ozone water process dress of biochemistry-ozone method for treating water described in operation Put, including biochemistry pool, preceding ozone reactor, the rear ozone reactor being sequentially connected；The biochemistry pool water outlet is connected with clear water reserviors, Clear water reserviors water outlet connects after being mixed by jet pump, micron-nano-sized aerator with the tail gas of rear ozone reactor with preceding ozone reactor Connect；The preceding ozone reactor connection ozone digestion pool, the ozone digestion pool connect the anoxic section of the biochemistry pool.
In order to further optimize above-mentioned technical proposal, the technical measures that the present invention is taken are：
Preferably, the biochemistry pool is the existing biochemical process structures such as A2O, AO, AOAO, oxidation ditch, A2O-MBR.
Preferably, the preceding ozone reactor and/or rear ozone reactor are ozone reaction tower or ozone contact tank.
The present invention uses above-mentioned technical proposal, compared with prior art, has the following technical effect that：
1 present invention sets two ozone reactors, preceding ozone reactor, based on direct ozonidation, by biochemistry Complicated hard-degraded substance in water outlet is oxidized to the material of easy biochemical degradation.Its water part is back to front end biochemistry pool and dropped Solution, take full advantage of the low-cost advantage of biochemical process；Part carries out thoroughly degraded to reach discharge mark into rear ozone reactor It is accurate.Ozone reactor carries out thorough mineralising to organic matter, and rear ozone reactor can based on indirect ozonidation afterwards Using the residual ozone in preceding ozone reactor water outlet, ozone utilization rate is improved.
2 ozone effluent recyclings add BAF to front end biochemistry pool, rather than rear end, and technological process simplifies, and takes up an area and reduces；It is and right There is the occasion of denitrogenation demand in Industrial Wastewater Treatment, total nitrogen caused by ozone oxidation open loop chain rupture rises can be by being back to front end Biochemistry pool carries out further denitrogenation.
3 setting ozone digestion pools are gone forward side by side dissolved ozone real time on-line monitoring in water-filling, can avoid too high residual ozone to preceding Hold the damage of biochemistry pool.
In the case of 4 same operating costs, effluent quality is more preferable；In the case of same effluent quality, total ozone dosage subtracts Few 10%-40%, so as to reduce operating cost.
5 clear water reserviors are connected through jet pump, flowmeter, micron-nano-sized aerator with preceding ozone reactor, and micron-nano-sized aerator enters The mixed effect that gas end is provided with flowmeter to adjust gas-water ratio to reach optimal.
Brief description of the drawings
Fig. 1 is the device that the biochemistry pool of a preferred embodiment of the present invention is biochemistry-ozone water process of MBR techniques Figure；
Fig. 2 is the dress that the biochemistry pool of a preferred embodiment of the present invention is the biochemistry-ozone water process in conventional biochemical pond Put figure；
Reference is：
1 biochemistry pool；Ozone reactor before 2；Ozone reactor after 3；4 ozone digestion pools；5 pumps；6 flowmeters one；7 suctions Pump；8MBR membrane modules；9 clear water reserviors；10 transmembrane pressure tables；11 electromagnetic flowmeters；12 liquid level gauges；13 online dissolving instrument；14 aerations System；15 backpurge systems；16 chemical drugs wash system；17 second ponds；18 filtering cloth filtering pools；19 filter clothes；20 mixed-liquor return pumps；21 carbon Source medicine system；22 sludge reflux pumps；23 jet pumps；24 flowmeters two；25 electric control valves；26 flowmeters three；27 is online molten Solve Ozone Monitor；28 reflux pumps；29 ozone generators；30 flowmeters four；31 flowmeters five；32 regulating valves one；33 regulating valves Two；34 ozone tail gas breaking plants；35 micron-nano-sized aerators；36 flowmeters six；37 membrane module cleaning agent tanks；38 air blowers； 39 ozone concentration analyzers.
Embodiment
The invention provides a kind of biochemistry-ozone equipment for treating water and its processing method.
The present invention is described in more detail below by specific embodiment, for a better understanding of the present invention, But following embodiments are not intended to limit the scope of the invention.
Fig. 1 is the device that the biochemistry pool of a preferred embodiment of the present invention is biochemistry-ozone water process of MBR techniques Figure；Fig. 2 is the installation drawing that the biochemistry pool of a preferred embodiment of the present invention is the biochemistry-ozone water process in conventional biochemical pond.
As shown in figure 1, when biochemistry pool 1 is MBR techniques, the biochemistry-Ozone Water applied to refractory wastewater Processing unit includes biochemistry pool 1, preceding ozone reactor 2, the rear ozone reactor 3 being sequentially connected；The preceding ozone reactor 2 connects Ozone digestion pool 4 is connect, the ozone digestion pool 4 connects the biochemistry pool 1.It is connected with the inlet pipeline of the front end of biochemistry pool 1 There is pump 5, the inlet pipeline is provided with flowmeter 1 and related valve；As needed, carbon source dosing can be set on inlet pipeline System 21；The tail end of biochemistry pool 1 is provided with MBR membrane modules 8, and the MBR membrane modules 8 are connected with suction pump 7, the suction pump 7 Transmembrane pressure table 10 is provided with the connecting line of MBR membrane modules 8；Liquid level gauge 12, online dissolving instrument 13 are provided with membrane cisterna；It is described MBR membrane modules 8 wash system 16 provided with aerating system 14, backpurge system 15 and chemical drugs, and the chemical drugs, which wash system 16, includes film Component cleaning agent tank 37；The aerobic section of biochemistry pool 1 is provided with air blower 38, and air blower 38 is by two-way aerating pipelines respectively to exposure Gas pond and membrane cisterna are aerated, and the regulation that regulating valve and gas flow meter carries out gas flow is equipped with aerating pipelines；The biochemistry The delivery port of pond 1 is connected with clear water reserviors 9；The clear water reserviors 9 are connected with suction pump 7 and backpurge system 15, the clear water reserviors 9 and suction The connecting line of pump 7 is provided with electromagnetic flowmeter 11, can be provided with mixed-liquor return pump 20 as needed by the tail end of biochemistry pool 1 and biochemistry The front end pond of pond 1 connects；Clear water reserviors 9 are connected through jet pump 23, flowmeter 2 24, micron-nano-sized aerator 35 with preceding ozone reactor 2, Micron-nano-sized aerator inlet end is provided with flowmeter 6 36 to the mixed effect for adjusting gas-water ratio to reach optimal, preceding ozone reaction The delivery port of device 2 sets ozone reactor 3 and ozone digestion pool 4 after threeway connects respectively；Preceding ozone reactor 2 connects ozone resolution The pipeline in pond 4 is provided with electric control valve 25 and flowmeter 3 26；Online dissolved ozone detector is set in ozone digestion pool 4 27；Electric control valve 25 is set on the inlet pipeline of ozone digestion pool 4, water pump 28 is set out on outlet pipeline；Preceding ozone reactor 2, after Ozone reactor 3 is connected with ozone generator 29, and ozone generator 29 divides that to enter preceding ozone reactor 2, rear ozone for two-way anti- Answer the aeration plate of the bottom of device 3, after aeration plate enter preceding ozone reactor 2, after ozone reactor 3；Preceding ozone reactor 2 enters Air pipe is provided with flowmeter 4 30 and regulating valve 1；Afterwards the air inlet pipeline of ozone reactor 3 be respectively equipped with flowmeter 5 31 and Regulating valve 2 33.Preceding ozone reactor 2, rear ozone reactor 3 connect the good of front end biochemistry pool 1 through ozone tail gas breaking plant 34 Oxygen pond；The preceding ozone reactor 2, rear ozone reactor 3 on the connecting line of ozone tail gas breaking plant 34 with being provided with ozone Concentration mensuration instrument 39.
As shown in Fig. 2 when biochemistry pool 1 is conventional biochemical technique, the biochemistry applied to refractory wastewater-smelly Biochemistry pool 1, second pond 17, filtering cloth filtering pool 18, preceding ozone reactor 2, the rear ozone that oxygen water treatment facilities includes being sequentially connected are anti- Answer device 3；The preceding ozone reactor 2 connects ozone digestion pool 4, and the ozone digestion pool 4 connects the biochemistry pool 1.With it is described The inlet pipeline of the front end of biochemistry pool 1 is connected with pump 5, and the inlet pipeline is provided with flowmeter 1 and related valve；According to need Will, carbon source medicine system 21 can be set on inlet pipeline；The filtering cloth filtering pool is connected by suction pump 7 through filter cloth 19 and clear water reserviors 9 Connect；The clear water reserviors 9 are provided with electromagnetic flowmeter 11 with the connecting line of suction pump 7, can be provided with mixed-liquor return pump as needed 20 are connected the tail end of biochemistry pool 1 with the front end of biochemistry pool 1；The second pond 17 is provided with sludge reflux pump 22；The suction pump 7 and life The connecting line for changing the tail end in pond 1 is provided with transmembrane pressure table 10；Aerobic section is provided with online dissolving instrument 13 and aeration in biochemistry pool 1 System 14；The aerobic section of biochemistry pool 1 is provided with air blower 38, and air blower 38 is aerated by aerating pipelines to aeration tank, on aerating pipelines The regulation of gas flow is carried out provided with regulating valve and gas flow meter；The clear water reserviors 9 connect with suction pump 7 and backpurge system 15 Connect, the delivery port of clear water reserviors 9 is connected through jet pump 23, flowmeter 2 24, micron-nano-sized aerator 25 with preceding ozone reactor 2, micro-nano Rice aerator inlet end is provided with flowmeter 6 36 to the mixed effect for adjusting gas-water ratio to reach optimal, preceding ozone reactor 2 Delivery port set ozone reactor 3 and ozone digestion pool 4 after threeway connects respectively；Preceding ozone reactor 2 connects ozone digestion pool 4 Pipeline be provided with electric control valve 25 and flowmeter 3 26；Online dissolved ozone detector 27 is set in ozone digestion pool 4；It is smelly Electric control valve 25 is set on the inlet pipeline of oxygen digestion pool 4, water pump 28 is set out on outlet pipeline；Preceding ozone reactor 2, rear ozone are anti- Device 3 is answered to be connected with ozone generator 29, ozone generator 29 divides enters preceding ozone reactor 2, the bottom of rear ozone reactor 3 for two-way The aeration plate in portion, after aeration plate enter preceding ozone reactor 2, after ozone reactor 3；The air inlet pipeline of preceding ozone reactor 2 Provided with flowmeter 4 30 and regulating valve 1；The air inlet pipeline of ozone reactor 3 is respectively equipped with flowmeter 5 31 and regulating valve afterwards 2 33.Preceding ozone reactor 2, rear ozone reactor 3 connect the Aerobic Pond of front end biochemistry pool 1 through ozone tail gas breaking plant 34； The preceding ozone reactor 2, rear ozone reactor 3 are with being provided with ozone concentration survey on the connecting line of ozone tail gas breaking plant 34 Determine instrument 39.
Described biochemistry-ozone method for treating water, comprises the following steps：
Step 1
Sewage is handled into biochemistry pool 1.Biochemistry pool 1 sets HRT according to influent quality, maximizes degraded bio-degradable Organic matter；
Step 2
Sewage reacts after the processing of biochemistry pool 1 into preceding ozone reactor 2, and regulation enters the ozone of preceding ozone reactor 2 Air inflow and ozone concentration；
Step 3
The water part of preceding ozone reactor 2 flows back into ozone digestion pool 4, partly into rear ozone reactor 3；Backflow Than being required according to effluent quality, the flux of the surface loading of second pond or MBR membrane modules determines；
Step 4
The part water outlet of the preceding ozone reactor 2 of ozone digestion pool 4 is flowed back into after step 3 is handled, its remnants dissolving Ozone is decomposed in ozone digestion pool 4, is back flowed into after remaining dissolved ozone decomposes completely in the step 1 Biochemistry pool 1；The ozone digestion pool 4 sets online dissolved ozone analyzer to enter dissolved ozone concentration monitor in water-filling；
Step 5
The part water outlet of the preceding ozone reactor 2 into rear ozone reactor 3 in the step 3 is in rear ozone reaction Further aoxidize in device 3 and discharged after reaching discharge standard.
In the step 1, industrial wastewater enters the ozone oxidation advanced treating of rear end after the processing of biochemistry pool 1.Biochemistry pool 1 sets HRT according to influent quality, maximizes the organic matter of degraded bio-degradable.Using conventional biochemical technique, to ensure ozone The high oxygenation efficiencies of reactor, secondary clarifier effluent need to pass through the process equipments such as filtering cloth filtering pool, air supporting or cartridge filter and remove SS； Using MBR techniques, water outlet can be directly entered ozone reactor.
In the step 2, the HRT of preceding ozone reactor 2 is determined by system water quality treatment.Biochemistry is first carried out before design to go out The ozone oxidation small-scale experiment of water, the time of ozone oxidation process B/C peaks is determined, in this, as ozone reactor 1 HRT.HRT general controls are in 2-30min.It can also enter preceding ozone reactor 2 by adjusting in actual moving process Air inflow, ozone concentration control.The ozone dosage scope of the preceding ozone reactor 2 is 30~100mg/L.
In the step 3, the water part of the preceding ozone reactor 2 flows back into ozone digestion pool 4, partly enters Ozone reactor 3 afterwards.Reflux ratio requires according to effluent quality, the flux of the surface loading of second pond or MBR membrane modules determines.Return Stream ratio is higher, and in the case of same effluent quality, ozone-depleting cost is lower.Reflux ratio general control is in 30%-100%.
In the step 4, the remaining dissolved ozone of the preceding water outlet of ozone reactor 2 is decomposed in ozone digestion pool 4, Biochemistry pool 1 is back flowed into after remaining dissolved ozone decomposes completely.The HRT of ozone digestion pool 4 is preferably 10-30min.Reflux point Anoxic pond is preferably arranged on, the nitrate nitrogen generated in preceding ozone reactor 2 is subjected to denitrification denitrogenation.Ozone digestion pool 4 is set Online dissolved ozone analyzer enters dissolved ozone concentration monitor in water-filling, if reaching warning value, closes digestion pool inlet valve, goes out Water pump, prevent from causing damage to the microorganism of front end biochemistry pool 1.
In the step 5, rear ozone reactor 3 by the water outlet of preceding ozone reactor 2, further with reaching discharge marked by oxidation It is accurate.HRT is preferably 15min-1h.The ozone dosage scope of ozone reactor 3 is that 50~200mg/L. is to improve ozone oxidation afterwards Efficiency, can the addition catalytic ozonation agent in rear ozone reactor 3.
Biochemistry-the ozone equipment for treating water mainly includes biochemistry pool 1, preceding ozone reactor 2, rear ozone reactor 3, smelly Oxygen digestion pool 4, ozone generator, aerating system and related monitoring device instrument.Wherein biochemistry pool 1 includes existing various biochemistry Technique structures, such as A2O, AO, AOAO, oxidation ditch, A2O-MBR.Preceding ozone reactor 2 and the type bag of rear ozone reactor 3 Include the forms such as ozone reaction tower, ozone contact tank.
The concrete technology flow process of biochemistry of the present invention-ozone method for treating water is：
After industrial wastewater is pre-processed by front grill, regulating reservoir etc., the biochemistry pool 1 of the present apparatus, pipeline are entered by pump 5 On be connected with flowmeter 1 and related valve.Gravity flow flows into waste water in each structures of biochemistry pool 1.Carry out organic matter drop After the processing such as solution, total nitrogen removal, according to the difference of determined biochemical process, it is divided into the ozone oxidation depth that two kinds of flows enter rear end Processing：
A MBR techniques bio-chemical effluents enter in clear water reserviors 9 after suction pump 7 is aspirated from the water outlet of MBR membrane modules 8.Suction pump On be connected with transmembrane pressure table 10, electromagnetic flowmeter 11, liquid level gauge 12, online dissolving instrument 13 are provided with membrane cisterna.Membrane module is provided with Aerating system 14, backpurge system 15 and chemical drugs wash system 16.Biochemistry pool 1 is according to whether denitrogenation dephosphorizing and water-inlet carbon source Whether abundance can be provided with mixed-liquor return pump 20 and carbon source medicine system 21.
The mixed liquor of B conventional biochemical methods biochemistry pool 1 enter the quiet heavy supernatant gravity flow of second pond 17 into filtering cloth filtering pool 18 or Sandfiltration pot enters in preceding ozone reactor 2 after removing suspension organic matter；Filtering cloth filtering pool is by suction pump 7 after the water outlet of filter cloth 19 Into clear water reserviors 9.Transmembrane pressure table 10, electromagnetic flowmeter 11 are connected with suction pump.Filtering cloth filtering pool is again provided with backpurge system 15.Biochemistry pool 1 according to whether denitrogenation dephosphorizing and water-inlet carbon source whether abundance can be provided with mixed-liquor return pump 20 and carbon source Medicine system 21.To ensure that the microbial biomass of biochemistry pool 1 is provided with sludge reflux pump 22.
Carried 2. the water outlet of clear water reserviors 9 enters preceding ozone reactor 2 progress deep oxidation through jet pump 23, micron-nano-sized aerator 35 The biodegradability of high hardly degraded organic substance, outlet conduit are provided with threeway, and water part enters rear ozone reactor 3, partly entered Enter ozone digestion pool 4.The air inlet pipeline of micron-nano-sized aerator 35 is connected with rear ozone reactor 3.Connection enters ozone digestion pool 4 Pipeline is provided with electric control valve 25 and flowmeter 3 26, carries out the regulation of capacity of returns.
3. the remaining dissolved ozone of the preceding water outlet of ozone reactor 2 is decomposed in ozone digestion pool 4, treat that remaining dissolving is smelly Biochemistry pool 1 is entered by reflux pump 28 after oxygen solution is complete.Ozone digestion pool 4 sets online dissolved ozone detector 27 to water Middle dissolved ozone concentration is monitored, in case the too high microorganism to front end biochemical system of Measuring Ozone Concentration in Water impacts, if Reach warning value, the valve 25 closed on the inlet pipeline of digestion pool 4 and go out water pump 28, prevent to front end biochemical system microorganism Cause damage.
4. rear ozone reactor 3 further aoxidizes the water outlet of preceding ozone reactor 2 to reach discharge standard.Ozone is anti-afterwards Answer in device 3 and improve ozone oxidation efficiency, the rear standard water discharge of ozone reactor 3 discharge equipped with heterogeneous catalysis.Ozone reactor 2nd, 3 using the material of resistance to ozone corrosion.Preceding ozone reactor 2, rear ozone reactor 3 are equipped with liquid level monitor, sight directly perceived Examine the glass plate liquid level gauge of liquid level and the visor of observing tower body internal state；Ozone reactor 3, which is additionally provided with, afterwards adds catalyst Dog-house and the discharge port for unloading carried catalyst.
5. preceding ozone reactor 2, rear ozone reactor 3 share ozonation aerated system.The source of the gas of ozone generator 29 can use Air-source or source of oxygen, ozone caused by ozone generator 29 are divided into two-way and enter ozone reactor 2, the aeration plate of 3 bottoms, Enter ozone reactor 2,3. ozone reactors 2,3 air inlet pipelines after aeration plate and be respectively equipped with flowmeter 4 30, flowmeter five 31 and regulating valve 1, regulating valve 2 33.The tail gas of ozone reactor 2,3 is after ozone tail gas breaking plant 34 is decomposed into oxygen Into the Aerobic Pond of front end biochemistry pool 1, the aeration expense of saving front end biochemical system.Present apparatus ozone reaction system be additionally provided with into Gas ozone, tail gas ozone, ozone breaker outlet ozone concentration monitoring system.
Embodiment one
Certain chemical industrial park waste water, pilot plant test：Flow of inlet water 10m3/d, using ozone before hydrolysis acidification-A2O-MBR--after Ozone process, preceding ozone reactor 2HRT 8min, rear ozone reactor 3HRT 30min.
(1) before ozone water outlet does not flow back before, biochemical influent COD 495mg/L, TN 45.6mg/L, bio-chemical effluent COD 100mg/L, TN 11.2mg/L, preceding ozone added amount of chemical 45mg/L, preceding ozone water outlet COD 80mg/L, TN 18.4mg/L, Ozone added amount of chemical 75mg/L afterwards, ozone water outlet COD 45mg/L, TN 18.9mg/L；
(2) ozone effluent recycling is to the anoxic section of A2O techniques, reflux ratio 50%, biochemical influent COD 497mg/L, TN before 47.5mg/L, bio-chemical effluent COD 95mg/L, TN 9.3mg/L, preceding ozone added amount of chemical 45mg/L, preceding ozone water outlet COD 70mg/L, TN 10.5mg/L, rear ozone added amount of chemical 75mg/L, ozone water outlet COD 38mg/L, TN 11.4mg/L；With this (1) of embodiment is compared, same ozone added amount of chemical operating mode, and effluent quality is more preferable；
(3) ozone effluent recycling is back to the anoxic section of A2O techniques, reflux ratio 50%, biochemistry water inlet 500mg/L, TN before 44.5mg/L, bio-chemical effluent COD 94mg/L, TN 9.2mg/L, preceding ozone added amount of chemical 45mg/L, preceding ozone water outlet COD 71mg/L, TN 10.4mg/L, rear ozone added amount of chemical 60mg/L, ozone water outlet COD 44mg/L, TN 11.6mg/L, with this (1) of embodiment is compared, and in the case of same water outlet COD, total ozone added amount of chemical reduces 12.0%；
(4) ozone effluent recycling is back to the anoxic section of A2O techniques, reflux ratio 100%, biochemical influent COD 495mg/ before L, TN 46.7mg/L, bio-chemical effluent COD 90mg/L, TN 8.8mg/L, preceding ozone added amount of chemical 45mg/L, preceding ozone water outlet COD 65mg/L, TN 10.3mg/L, rear ozone added amount of chemical 50mg/L, ozone water outlet COD 46mg/L, TN 11.3mg/L. Compared with (1) of the present embodiment, in the case of same water outlet COD, total ozone added amount of chemical reduces 20.0%；With the present embodiment (3) compare, reflux ratio increases 1 times, and total ozone added amount of chemical reduces 8%.
Embodiment two
Certain chemical industrial park waste water, pilot plant test：Flow of inlet water 10m3/d, using hydrolysis acidification-A2O- filtering cloth filtering pools-preceding smelly Oxygen-rear ozone process, preceding ozone reactor 2HRT 8min, rear ozone reactor 3HRT30min.
(1) before ozone water outlet does not flow back before, biochemical influent COD 480mg/L, TN 44.5mg/L, secondary clarifier effluent COD 115mg/L, TN 12.4mg/L, filtering cloth filtering pool water outlet COD 102mg/L, TN11.5mg/L, preceding ozone added amount of chemical 45mg/ L, preceding ozone water outlet COD 85mg/L, TN 18.5mg/L, rear ozone added amount of chemical 80mg/L, ozone water outlet COD 48mg/L, TN 18.9mg/L；
(2) ozone effluent recycling is to the anoxic section of A2O techniques, reflux ratio 50%, biochemical influent COD 485mg/L, TN before 46.5mg/L, secondary clarifier effluent COD 110mg/L, TN 12.3mg/L, filtering cloth filtering pool water outlet COD97mg/L, TN 10.8mg/L, Preceding ozone added amount of chemical 45mg/L, preceding ozone water outlet COD 80mg/L, TN 12.5mg/L, rear ozone added amount of chemical 80mg/ L, ozone water outlet COD 43mg/L, TN 12.5mg/L；Compared with (1) of the present embodiment, same ozone added amount of chemical operating mode, Effluent quality is more preferable；
(3) ozone effluent recycling is to the anoxic section of A2O techniques before, reflux ratio 50%, biochemistry water inlet 483mg/L, TN 46.4mg/L, secondary clarifier effluent COD 108mg/L, TN 12.2mg/L, filtering cloth filtering pool water outlet COD 96mg/L, TN 10.8mg/ L, preceding ozone added amount of chemical 40mg/L, preceding ozone water outlet COD 78mg/L, TN 12.4mg/L, rear ozone added amount of chemical 70mg/L, ozone water outlet COD 46mg/L, TN 12.6mg/L, compared with (1) of the present embodiment, in the case of same water outlet COD, Total ozone added amount of chemical reduces 11.5%；
(4) ozone effluent recycling is to the anoxic section of A2O techniques, reflux ratio 100%, biochemical influent COD 480mg/L, TN before 46.7mg/L, secondary clarifier effluent COD 106mg/L, TN 11.3mg/L, filtering cloth filtering pool water outlet COD 95mg/L, TN 10.8mg/ L, preceding ozone added amount of chemical 40mg/L, preceding ozone water outlet COD 76mg/L, TN 11.8mg/L, rear ozone added amount of chemical 60mg/L, ozone water outlet COD 47mg/L, TN 12.3mg/L.Compared with (1) of the present embodiment, in the case of same water outlet COD, Total ozone added amount of chemical reduces 19.2%；Compared with 3, reflux ratio increases 1 times, and total ozone added amount of chemical reduces 7.7%.
Comparative example
Certain chemical industrial park waste water, pilot plant test：Flow of inlet water 10m3/d, using ozone before hydrolysis acidification-A2O-MBR-- Ozone process after BAF-, preceding ozone reactor 2HRT 8min, rear ozone reactor 3HRT 30min, biochemical influent COD 500mg/L, TN 45.8mg/L, bio-chemical effluent COD 100mg/L, TN 11.2mg/L, preceding ozone added amount of chemical 50mg/L, it is preceding Ozone water outlet COD 80mg/L, TN 18.4mg/L, BAF water outlet COD 70mg/L, TN 16.5mg/L, rear ozone added amount of chemical 75mg/L, ozone water outlet COD 45mg/L, TN 16.9mg/L.Compared with embodiment one and two, under same ozone dosage, Water outlet COD is more or less the same, but TN rises；And after increase BAF, compared compared with embodiment one with two and add occupation of land.
In summary, for the present invention in the case of same operating cost, effluent quality is more preferable；Same effluent quality situation Under, total ozone dosage reduces 10%-40%, so as to reduce operating cost.
The specific embodiment of the present invention is described in detail above, but it is intended only as example, it is of the invention and unlimited It is formed on particular embodiments described above.To those skilled in the art, it is any to the equivalent modifications that carry out of the present invention and Substitute also all among scope of the invention.Therefore, the impartial conversion made without departing from the spirit and scope of the invention and Modification, all should be contained within the scope of the invention.

Claims (10)

  1. A kind of 1. biochemistry-ozone method for treating water, it is characterised in that：Comprise the following steps：
    Step 1
    Sewage is handled into biochemistry pool (1)；Biochemistry pool (1) sets HRT according to influent quality, maximizes degraded bio-degradable Organic matter；
    Step 2
    Sewage enters preceding ozone reactor (2) after biochemistry pool (1) processing and reacted, and regulation enters the smelly of preceding ozone reactor (2) Oxygen air inflow and ozone concentration；
    Step 3
    The water part of preceding ozone reactor (2) flows back into ozone digestion pool (4), partly into rear ozone reactor (3)；
    Step 4
    The part water outlet of the preceding ozone reactor (2) of ozone digestion pool (4) is flowed back into after step 3 is handled, its remnants dissolving Ozone is decomposed in ozone digestion pool (4), is back flowed into after remaining dissolved ozone decomposes completely in the step 1 Biochemistry pool (1)；The ozone digestion pool (4) sets online dissolved ozone analyzer (27) to enter dissolved ozone concentration in water-filling and supervised Survey；
    Step 5
    The part water outlet of preceding ozone reactor (2) in the step 3 enters rear ozone reactor (3), in rear ozone reactor (3) further aoxidize in and discharged after reaching discharge standard.
  2. 2. biochemistry according to claim 1-ozone method for treating water, it is characterised in that：The biochemistry pool in step 1 (1) when, using conventional biochemical pond, second pond (17) water outlet need to pass through the process equipments such as filtering cloth filtering pool, air supporting or cartridge filter Remove SS；When the biochemistry pool (1) uses MBR techniques, water outlet is directly entered ozone reactor.
  3. 3. biochemistry according to claim 2-ozone method for treating water, it is characterised in that：The preceding ozone of the step 2 is anti- The HRT for answering device (2) is 2-30min；The ozone dosage of the preceding ozone reactor (2) of the step 2 is 30~100mg/L.
  4. 4. biochemistry according to claim 3-ozone method for treating water, it is characterised in that：The reflux ratio of the step 3 is 30%-100%.
  5. 5. biochemistry according to claim 4-ozone method for treating water, it is characterised in that：Reflux point in the step 4 The anoxic section being arranged in biochemistry pool 1.
  6. 6. biochemistry according to claim 5-ozone method for treating water, it is characterised in that：Ozone in the step 4 disappears Xie Chi (4) HRT is 10-30min.
  7. 7. biochemistry according to claim 6-ozone method for treating water, it is characterised in that：HRT in the step 5 is 15min-1h；The ozone dosage scope of ozone reactor (3) is 50~200mg/L afterwards.
  8. 8. a kind of biochemistry-ozone equipment for treating water for running any described biochemistry-ozone method for treating water of claim 1-7, It is characterized in that：Including the biochemistry pool (1), preceding ozone reactor (2), rear ozone reactor (3) being sequentially connected；The biochemistry pool (1) water outlet is connected with clear water reserviors (9), clear water reserviors (9) water outlet by jet pump (23), micron-nano-sized aerator (35) with it is rear smelly It is connected after the tail gas mixing of oxygen reactor (3) with preceding ozone reactor (2)；Preceding ozone reactor (2) the connection ozone resolution Pond (4), the ozone digestion pool (4) connect the anoxic section of the biochemistry pool (1).
  9. 9. biochemistry-ozone equipment for treating water according to claim 8, it is characterised in that：The biochemistry pool (1) be A2O, The existing biochemical process structures such as AO, AOAO, oxidation ditch, A2O-MBR.
  10. 10. biochemistry-ozone equipment for treating water according to claim 9, it is characterised in that：The preceding ozone reactor (2) And/or rear ozone reactor (3) is ozone reaction tower or ozone contact tank.
CN201710978304.9A 2017-10-18 2017-10-18 A kind of biochemical ozone method for treating water and its processing unit Pending CN107814459A (en)

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Publication number Priority date Publication date Assignee Title
CN110156276A (en) * 2019-06-20 2019-08-23 浙江亲水园生物科技有限公司 A kind of fecaluria mixed processing technique
CN111470610A (en) * 2020-03-18 2020-07-31 深圳信息职业技术学院 Ozone water treatment technology evaluation system and method
CN112174430A (en) * 2020-09-25 2021-01-05 中蓝连海设计研究院有限公司 Ozone oxidation-biochemical coupling sewage advanced treatment method and device
CN112321073A (en) * 2020-10-21 2021-02-05 江苏新路德建设有限公司 Sewage treatment system and method

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WO2010058187A2 (en) * 2008-11-24 2010-05-27 Qinetiq Limited Waste management
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CN206512041U (en) * 2017-03-01 2017-09-22 南京大学盐城环保技术与工程研究院 A kind of device of two-stage gradient ozone catalytic fluidized bed deep treatment biochemical tail water

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Publication number Priority date Publication date Assignee Title
WO2010058187A2 (en) * 2008-11-24 2010-05-27 Qinetiq Limited Waste management
CN102381812A (en) * 2011-09-30 2012-03-21 浙江清华长三角研究院 Advanced treatment method and device for nonbiodegradable organic wastewater by utilizing O3 catalytic oxidation
CN206512041U (en) * 2017-03-01 2017-09-22 南京大学盐城环保技术与工程研究院 A kind of device of two-stage gradient ozone catalytic fluidized bed deep treatment biochemical tail water

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110156276A (en) * 2019-06-20 2019-08-23 浙江亲水园生物科技有限公司 A kind of fecaluria mixed processing technique
CN111470610A (en) * 2020-03-18 2020-07-31 深圳信息职业技术学院 Ozone water treatment technology evaluation system and method
CN112174430A (en) * 2020-09-25 2021-01-05 中蓝连海设计研究院有限公司 Ozone oxidation-biochemical coupling sewage advanced treatment method and device
CN112321073A (en) * 2020-10-21 2021-02-05 江苏新路德建设有限公司 Sewage treatment system and method

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Application publication date: 20180320