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CN110040913A - A kind of advanced treatment process and device of biology non-degradable waste water - Google Patents

A kind of advanced treatment process and device of biology non-degradable waste water Download PDF

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Publication number
CN110040913A
CN110040913A CN201910388388.XA CN201910388388A CN110040913A CN 110040913 A CN110040913 A CN 110040913A CN 201910388388 A CN201910388388 A CN 201910388388A CN 110040913 A CN110040913 A CN 110040913A
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CN
China
Prior art keywords
ozone
waste water
degradable
cbr
reactor
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910388388.XA
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Chinese (zh)
Inventor
严月根
吴华明
凌明
袁妤
刘芳蕾
叶国祥
郭慧
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Zhejiang Juneng Environmental Engineering Co Ltd
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Zhejiang Juneng Environmental Engineering Co Ltd
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Priority to CN201910388388.XA priority Critical patent/CN110040913A/en
Publication of CN110040913A publication Critical patent/CN110040913A/en
Pending legal-status Critical Current

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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
    • C02F1/34Treatment of water, waste water, or sewage with mechanical oscillations
    • C02F1/36Treatment of water, waste water, or sewage with mechanical oscillations ultrasonic vibrations
    • 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
    • C02F2101/00Nature of the contaminant
    • C02F2101/30Organic compounds
    • 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
    • C02F3/08Aerobic processes using moving contact bodies
    • C02F3/085Fluidized beds

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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)
  • Treatment Of Water By Oxidation Or Reduction (AREA)

Abstract

The invention belongs to technical field of waste water processing, especially a kind of advanced treatment process of biological non-degradable waste water includes the following steps: step 1: the processing of ozone ultrasonic synergistic oxidation;Step 2: biochemical treatment;A kind of biology non-degradable advanced waste treatment apparatus, it includes the ozone gas dissolver set gradually, ozone generator, ultrasonic reactor, ozone reactor, CBR biomembrane reaction pond;The present invention is by coupling combination with CBR biochemical processing for ozone cooperative ultrasonic oxidation technology, ozone treatment cost can not only be reduced, and ozone can be maximally utilized, so that biological non-degradable waste water reaches optimal treatment effect, it is generated simultaneously without dangerous wastes such as sludge, secondary pollution will not be caused to environment, process implementing expense is lower, effluent quality is excellent, is suitble to promote and apply.

Description

A kind of advanced treatment process and device of biology non-degradable waste water
Technical field
The invention belongs to technical field of waste water processing, in particular to a kind of biological non-degradable waste water or tail water (are referred to as life Object non-degradable waste water) advanced treatment process and device.
Background technique
Biological non-degradable waste water after biochemical treatment, at biodegradability, especially chemical wastewater biochemical Reason water outlet, general COD concentration are 50-300mg/L, and amounts of residual contamination is essentially biological non-degradable organic substance.Chemical industry at present Or chemical industrial park waste water disposal facility is discharged in line water body, discharge standard generally requires level-one A namely COD to be lower than 50mg/L, Some even requires COD that could discharge lower than 30mg/L.It is main for the processing method of this kind of biological non-degradable waste water at present Have advanced oxidation processes (such as ozone oxidation, Fenton oxidation, secondary oxychloride, UV) or an activated carbon adsorption, these processing methods have compared with Strong selectivity can solve all waste water problems without one kind, and expensive.Fenton oxidation need to consume a large amount of medicaments and A large amount of chemical sludges are generated, more there is secondary pollution risk;Secondary oxychloride can generate potential carcinogenic chlorinated organics, and effect It is relatively general;Also effect is general for UV oxidation;Equally, activated carbon adsorption also has very strong selectivity, and will cause a large amount of useless Active carbon (dangerous waste is generally sorted out by government at present) needs to dispose.Biology is handled not using ozone oxidation or O3 catalytic oxidation Degradable waste water can obtain preferable treatment effect, but ozone oxidation cost is also high, and ozone oxidation efficiency is with ozone The increase of dosage and decline, therefore moderate control ozone dosage, resolve into using ozone lesser molecule then using life Change degradation further removal organic matter, that is, coupling integrated treatment facility, ensures treatment effeciency and effluent quality premise up to standard It is lower that there is preferably economic rationality.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, provide a kind of processing effect for biological non-degradable waste water Fruit is good, operating cost is lower, the advanced treating of nothing or the biological non-degradable waste water generated almost without secondary pollutions such as sludge Technique.
In order to achieve the above object, the advanced treatment process of a kind of biological non-degradable waste water designed by the present invention, packet Include following steps:
Step 1: the processing of ozone ultrasonic synergistic oxidation: biological non-degradable waste water flows into the water inlet end of gas dissolver, ozone generator The ozone gas of generation is entered in waste water to be processed by the ozone access apertures of gas dissolver, is sufficiently mixed with waste water, is controlled smelly The proportionate relationship of oxygen dosage and required degradation COD amount, abbreviation O/C ratio, to control ozone dosage, O/C ratio is controlled in 1- 3mgO3/mgCOD;Then the waste water dissolved with ozone gas escapes and enter ultrasonic reactor (the liquid whistle by the diffuser of gas dissolver Formula or reed-type ultrasonic generator), under ultrasonic cavitation, phonochemical reaction, control occur for ozone and Pollutants in Wastewater Supersonic jet intensity is allowed to generate the power ultrasound of frequency 20-40kHz, and acoustic density reaches 1-3W/cm2;It is organic in waste water Object molecule is decomposed by effective tearing, enhances the biodegradability of waste water while reducing COD;The waste water stream handled by ultrasonic cavitation To ozone reactor, the reaction time is 0.2-4 hours;
Step 2: biochemical treatment: it is raw that the waste water after ozone ultrasonic coupling processing enters the bio-carrier flowing i.e. CBR of bed reaction tank Object film reaction pond, by further biochemical treatment, COD is down to can be in the range of qualified discharge;Control aeration intensity, it is ensured that raw Object film reaction pond carrier is in suspension flow regime, and dissolved oxygen concentration reaches 1-3mg/L, and aeration tank hydraulic detention time is with 0.5-6 Hour is advisable.
It is a further object of the present invention to provide a kind of devices of above-mentioned biological non-degradable wastewater deep treatment process, it is wrapped Include the ozone gas dissolver set gradually, ozone generator, ultrasonic reactor, ozone reactor, CBR biomembrane reaction pond;Molten gas Device includes entrance, contraction section, venturi and diffuser, and ozone access apertures is equipped at the venturi of gas dissolver, and the ozone is passed through Hole is connected to ozone generator;The import of gas dissolver entrance is connect with intake pump, and the outlet of gas dissolver diffuser and ultrasound are anti- It answers the import of device and the water inlet end of the outlet of ultrasonic reactor and ozone reactor connects, the water outlet of ozone reactor and CBR The water inlet end of biomembrane reaction pond connects, one or more levels bio-carrier is equipped in the CBR biomembrane reaction pond and is flowed Bed.
To improve dissolved efficiency, enhancing oxidation effectiveness of the ozone gas in waste water, cloth water system is set in ozone reactor It unites, catalyst bed can be set as needed to strengthen ozone oxidation efficiency in ozone reactor.To avoid overflowing gas to ring The pollution in border, ozone reactor top are equipped with exhaust collection and breaking plant.When using pure oxygen as ozone source, tail gas can after destruction Using the gas source as subsequent CBR biomembrane reaction pond or other biochemical treatment reactors, comprehensive utilization of resources is realized.Ozone reaction Device can be pond body or tank body.
To adapt to the transformation of built sewage plant or because field condition limits, CBR biomembrane reaction pond can be pond body or tank Body, CBR biomembrane reaction pond include aerating system and suspension CBR carrier, i.e. aeration stirring and oxygen replenishing equipment is arranged in bottom, right CBR biomembrane realizes that the stirring such as bio-carrier, the outlet of CBR reaction tank are additionally provided with retention sieve while providing dissolved oxygen, it is ensured that CBR carrier is not lost.
For the realization for guaranteeing ozone molten gas efficiency and power ultrasound, pass through reflux pump and pipe in the water outlet of ozone reactor Road is connected to the water inlet end of ozone reactor.When wastewater flow deficiency, ozone reactor (pond) water outlet can be used as water inlet Supplement, it is ensured that ozone gas dissolve in and ultrasonic generator work normally.
Ozone ultrasonic synergistic oxidation of the present invention, i.e., by the way that ozone gas dissolver and liquid whistle formula are arranged in ozone reactor Ultrasonic generator mixes so that ozone comes into full contact with waste water, and phonochemical reaction is additionally also obtained when entering reaction tank;It is logical Control ozone intake, supersonic synergic and reaction time are spent, makes the control of COD removal rate in 10-70%, is being effectively reduced COD's Meanwhile the biodegradability of lifting waste water, and operating cost can be rationally controlled, it increases economic efficiency.
CBR biomembrane reaction pond of the invention utilizes apposition growth on carrier using bio-carrier fluidized-bed reactor Biological membrane degradation organic pollutants.Carrier fluidized bed reactor is high with microorganism concn in this technique, resistance to mass tranfer is small, It is not easy to block, hydraulic detention time is short and the advantages that almost without excess sludge, CBR filler is added using composite plastic and macromolecule Agent modification is process, and has many advantages, such as that large specific surface area, good hydrophilic property, capacity of resisting impact load are strong and easy to be filmed, removal are residual Remaining organic matter and ammonia nitrogen ability are significant, and organic removal rate can achieve 30-70%, and mineralized nitrogen rate can achieve 90% with On, also, the utilization rate 3-5% of oxygen can be improved in CBR carrier, reduces oxygenation energy consumption.
Present invention is generally directed to carry out biological non-degradable waste water after materializing strategy and biochemical treatment, it is further carried out depth Degree processing, is handled using ozone cooperative ultrasound and CBR biological film coupling, can reach the most harsh discharge standard of national regulation.Its In, ozone cooperative ultrasonic oxidation treatment process has many advantages, such as to be swift in response, is adaptable to water quality and without secondary pollution, biology Membrane treatment process has many advantages, such as economic, efficient and innoxious, the strong operability of entire process flow;The present invention passes through will be smelly Oxygen cooperates with ultrasonic oxidation technology to couple combination with CBR biochemical processing, can not only reduce ozone treatment cost, and can Ozone is maximally utilized, so that biological non-degradable waste water reaches optimal treatment effect, while being generated without dangerous wastes such as sludge, no Secondary pollution can be caused to environment, process implementing expense is lower, and effluent quality is excellent, is suitble to promote and apply.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention;
Fig. 2 is the structural schematic diagram of gas dissolver of the invention.
Specific embodiment
Embodiment 1:
It is discharged COD after the biochemical treatment of a certain chemical industrial park centralized wastewater treatment factory and is up to 200-300mg/L(BOD less than 5 mg/L, It is not biodegradable), it is handled as follows:
Step 1: the processing of ozone ultrasonic synergistic oxidation: biological non-degradable waste water flows into the water inlet end of gas dissolver, ozone generator The ozone gas of generation is entered in waste water to be processed by the ozone access apertures of gas dissolver, is sufficiently mixed with waste water, is controlled smelly The proportionate relationship of oxygen dosage and required degradation COD amount, abbreviation O/C ratio, to control ozone dosage, the control of O/C ratio exists 2mgO3/mgCOD;Then the waste water dissolved with ozone gas escapes and enter ultrasonic reactor (the liquid whistle by the diffuser of gas dissolver Formula or reed-type ultrasonic generator), under ultrasonic cavitation, phonochemical reaction, control occur for ozone and Pollutants in Wastewater Supersonic jet intensity is allowed to generate the power ultrasound of frequency 20-40kHz, and acoustic density reaches 2.1W/cm2;It is organic in waste water Object molecule is decomposed by effective tearing, enhances the biodegradability of waste water while reducing COD;The waste water stream handled by ultrasonic cavitation To ozone reactor, the reaction time is 1-4 hours;
Step 2: biochemical treatment: it is raw that the waste water after ozone ultrasonic coupling processing enters the bio-carrier flowing i.e. CBR of bed reaction tank Object film reaction pond, by further biochemical treatment, COD is down to can be in the range of qualified discharge;Control aeration intensity, it is ensured that raw Object film reaction pond carrier is in suspension flow regime, and dissolved oxygen concentration reaches 3mg/L, and aeration tank hydraulic detention time is 2-6 hours.
Above-mentioned waste water COD after ozone ultrasonic collaboration processing can be reduced to 150mg/L, then after CBR biomembrane reaction, COD can be reduced to 25-40mg/L.
Embodiment 2:
As shown in Figure 1, a kind of advanced treatment apparatus of biological non-degradable waste water of the present embodiment description, it includes ozone reaction Device 1, gas dissolver 4, ultrasonic generator 6 and CBR biomembrane reaction pond 2, the gas dissolver 4 and ozone generator 3, surpass intake pump Acoustic generator 6 is connected, and ultrasonic generator 6 is connect with ozone reactor 1, as shown in Fig. 2, gas dissolver 4 include entrance 4-1, Contraction section 4-2, venturi 4-3 and diffuser 4-4, are equipped with ozone access apertures 5 at the venturi 4-3 of gas dissolver 4, and the ozone is passed through Hole 5 is connected to ozone generator 3;The import of 4 entrance 4-1 of gas dissolver is connect with intake pump, and 4 diffuser 4-4's of gas dissolver goes out Mouth is connect with liquid whistle formula ultrasonic generator 6;The water outlet of ozone reactor 1 is connect with the water inlet end of CBR biomembrane reaction pond 2, Multistage setting biologic packing material bed can be divided in the CBR biomembrane reaction pond 2, the outlet of CBR biomembrane reaction pond 2 is cut equipped with carrier Stay sieve 7.The water inlet end of ozone reactor 1 is connected to by reflux pump and pipeline in the water outlet of ozone reactor 1.

Claims (10)

1. a kind of advanced treatment process of biology non-degradable waste water, characterized by the following steps:
Step 1: the processing of ozone ultrasonic synergistic oxidation: biological non-degradable waste water flows into the water inlet end of gas dissolver, ozone generator The ozone gas of generation is entered in waste water to be processed by the ozone access apertures of gas dissolver, is sufficiently mixed with waste water, is controlled smelly The proportionate relationship of oxygen dosage and required degradation COD amount, abbreviation O/C ratio, to control ozone dosage, O/C ratio is controlled in 1- 3mgO3/mgCOD;Then the waste water dissolved with ozone gas escapes and enter ultrasonic reactor by the diffuser of gas dissolver, super Under acoustic cavitation effect, phonochemical reaction occurs for ozone and Pollutants in Wastewater, controls supersonic jet intensity, is allowed to generate frequency The power ultrasound of 20-40kHz, acoustic density reach 1-3W/cm2;Organic molecule in waste water is decomposed by effective tearing, is reduced Enhance the biodegradability of waste water while COD;Ozone reactor is flowed to by the waste water that ultrasonic cavitation is handled, the reaction time is 0.2-4 hours;
Step 2: biochemical treatment: it is raw that the waste water after ozone ultrasonic coupling processing enters the bio-carrier flowing i.e. CBR of bed reaction tank Object film reaction pond, by further biochemical treatment, COD is down to can be in the range of qualified discharge;Control aeration intensity, it is ensured that raw Object film reaction pond carrier is in suspension flow regime, and dissolved oxygen concentration reaches 1-3mg/L, and aeration tank hydraulic detention time is 0.5-6 Hour.
2. a kind of advanced treatment process of biological non-degradable waste water according to claim 1, it is characterised in that: described super Sound reactor is liquid whistle formula or reed-type ultrasonic generator.
3. biology non-degradable advanced waste treatment apparatus described in a kind of claim 1, it is characterised in that: including gas dissolver, smelly Oxygen Generator, ultrasonic reactor, ozone reactor, CBR biomembrane reaction pond;Gas dissolver include entrance, contraction section, venturi and Diffuser, is equipped with ozone access apertures at the venturi of gas dissolver, and the ozone access apertures is connected to ozone generator;Gas dissolver enters The import of mouthful section is connect with intake pump, the outlet of gas dissolver diffuser and the import of ultrasonic reactor and the outlet of ultrasonic reactor It is connect with the water inlet end of ozone reactor, the water outlet of ozone reactor is connect with the water inlet end of CBR biomembrane reaction pond, described One or more levels bio-carrier thermopnore is equipped in CBR biomembrane reaction pond.
4. a kind of biological non-degradable advanced waste treatment apparatus according to claim 3, it is characterised in that: ozone reaction Water distribution system is set in device.
5. a kind of biological non-degradable advanced waste treatment apparatus according to claim 3, it is characterised in that: ozone reaction Setting catalyst bed is in device to strengthen ozone oxidation efficiency.
6. a kind of biological non-degradable advanced waste treatment apparatus according to claim 3, it is characterised in that: ozone reaction Exhaust collection and breaking plant are equipped at the top of device.
7. a kind of biological non-degradable advanced waste treatment apparatus according to claim 3, it is characterised in that: made with pure oxygen When for ozone source, tail gas is as subsequent CBR biomembrane reaction pond or the gas source of other biochemical treatment reactors after destruction.
8. a kind of biological non-degradable advanced waste treatment apparatus according to claim 3, it is characterised in that: ozone reaction Device is pond body or tank body.
9. a kind of biological non-degradable advanced waste treatment apparatus according to claim 3, it is characterised in that: CBR biology Film reaction pond is pond body or tank body, and CBR biomembrane reaction pond includes aerating system and suspension CBR carrier, i.e. bottom setting aeration Stirring and oxygen replenishing equipment, the outlet of CBR reaction tank are additionally provided with retention sieve, it is ensured that CBR carrier is not lost.
10. a kind of biological non-degradable advanced waste treatment apparatus according to claim 3, it is characterised in that: in ozone The water outlet of reactor is connected to the water inlet end of ozone reactor by reflux pump and pipeline.
CN201910388388.XA 2019-05-10 2019-05-10 A kind of advanced treatment process and device of biology non-degradable waste water Pending CN110040913A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110407364A (en) * 2019-08-15 2019-11-05 佛山市玉凰生态环境科技有限公司 A kind of black and odorous water emergency purifier and water body treating method
CN113003851A (en) * 2020-11-13 2021-06-22 四川全息生态环境技术产业有限公司 Ultrasonic, ozone and micro-channel advanced oxidation method and device thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101323493A (en) * 2008-07-24 2008-12-17 华南理工大学 Waste water treatment apparatus based on ozone oxidation and aerating biological filter
CN102139995A (en) * 2011-02-23 2011-08-03 上海化学工业区中法水务发展有限公司 Treatment method of high-chroma chemical waste water
CN105366846A (en) * 2015-09-11 2016-03-02 东莞市绿巨人环境科技有限公司 Method for treating paraquat pesticide wastewater
CN106007256A (en) * 2016-07-28 2016-10-12 黄霞 Microbubble ozone catalytic oxidation-no-aeration biochemical coupling technology system and application thereof
CN209957611U (en) * 2019-05-10 2020-01-17 浙江巨能环境工程有限公司 Advanced treatment device for biodegradable wastewater

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101323493A (en) * 2008-07-24 2008-12-17 华南理工大学 Waste water treatment apparatus based on ozone oxidation and aerating biological filter
CN102139995A (en) * 2011-02-23 2011-08-03 上海化学工业区中法水务发展有限公司 Treatment method of high-chroma chemical waste water
CN105366846A (en) * 2015-09-11 2016-03-02 东莞市绿巨人环境科技有限公司 Method for treating paraquat pesticide wastewater
CN106007256A (en) * 2016-07-28 2016-10-12 黄霞 Microbubble ozone catalytic oxidation-no-aeration biochemical coupling technology system and application thereof
CN209957611U (en) * 2019-05-10 2020-01-17 浙江巨能环境工程有限公司 Advanced treatment device for biodegradable wastewater

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110407364A (en) * 2019-08-15 2019-11-05 佛山市玉凰生态环境科技有限公司 A kind of black and odorous water emergency purifier and water body treating method
CN113003851A (en) * 2020-11-13 2021-06-22 四川全息生态环境技术产业有限公司 Ultrasonic, ozone and micro-channel advanced oxidation method and device thereof

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Application publication date: 20190723