CN113041835A - Processing system of exhaust gas that escapes in waste water - Google Patents
Processing system of exhaust gas that escapes in waste water Download PDFInfo
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- CN113041835A CN113041835A CN202110329898.7A CN202110329898A CN113041835A CN 113041835 A CN113041835 A CN 113041835A CN 202110329898 A CN202110329898 A CN 202110329898A CN 113041835 A CN113041835 A CN 113041835A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/84—Biological processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/38—Removing components of undefined structure
- B01D53/44—Organic components
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Life Sciences & Earth Sciences (AREA)
- Molecular Biology (AREA)
- Treating Waste Gases (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention discloses a treatment system for waste gas escaping from waste water, which is used for collecting and treating the waste gas released from a sewage container of a sewage treatment plant. A substantially sealed top cover is provided at the opening of the waste water container, and the top cover is provided with an exhaust gas outlet. After the exhaust gas outlet, there are the following sequence of process components: the device comprises a pretreatment device, a biological treatment device and an adsorption device, and finally, the generated waste liquid is recycled or flows into a sewage treatment plant. The concentration of the waste gas in the later-stage waste water treatment pipeline is lower, and the investment cost of the later-stage waste water treatment equipment is reduced.
Description
Technical Field
The present application is a divisional application of patent application No. 2016109879475 entitled "treatment system for waste gases escaping from waste water", and relates to a waste gas treatment apparatus for sewage tanks or sewage.
Background
The waste water fed into a sewage treatment plant or the waste water in the sewage treatment process often emits waste gas into the air, and the waste gas often has an unpleasant smell. The traditional wastewater treatment only carries out purification treatment on liquid wastewater, and basically does not treat or treat the waste gas escaping from the air.
The invention with the patent application number of 2012103675438 provides a new method for collecting and treating waste gas of a sewage treatment plant. The pool body for generating waste gas in a sewage treatment plant is sealed, the generated waste gas is conveyed to an ozone generator by a fan for oxidation treatment, and the tail gas after the oxidation treatment is subjected to acid washing and alkali washing and finally discharged after reaching the standard. The invention can only treat part of gas sensitive to ozone in the waste gas, and other components can not be effectively treated.
Disclosure of Invention
The purpose of the invention is as follows:
a staged treatment system for malodorous gases of various compositions escaping from waste water is provided.
The technical scheme is as follows:
the principle of the invention is as follows: the waste gas treatment of the original sewage plant is realized by utilizing the purification function of the original pool of the sewage plant. Waste gas is collected by sealing and covering, the waste gas is discharged after reaching standards through biological and adsorption treatment, and gaseous substances and liquid substances with small gas amount and high concentration formed by harmful substances in the waste gas enter sewage treatment process equipment again and are purified by utilizing the original functions of a sewage pool.
The system for treating the waste gas escaping from the wastewater is used for collecting and treating the waste gas released from a sewage container (including a sewage container entering the sewage treatment plant, and one or more containers for conveying or containing sewage or sludge in the sewage treatment process) of the sewage treatment plant. A substantially sealed top cover is provided at the opening of the waste water container, and the top cover is provided with an exhaust gas outlet. The waste gas outlet can be connected with a waste gas pipeline, so that waste gas can be conveniently conveyed out as soon as possible. The sewage container can also be provided with an aeration or stirring device for stirring the wastewater, which is beneficial to releasing more waste gas as soon as possible in the sewage treatment process.
After the exhaust gas outlet or the exhaust gas line, there may be the following sequence of treatment process equipment (and process flows thereof) according to the exhaust gas flow path:
the waste gas flows through a waste gas pretreatment device firstly, and oil separation, water washing or alkali washing are carried out, so that the adverse effects on microorganisms and activated carbon in a subsequent device are avoided (when the concentration of the waste gas is lower, the pretreatment device is not needed);
then, the waste gas enters a biological treatment device (which can be one set or two or more sets connected in parallel, and the biological bed layer filler and microorganisms are arranged in the biological treatment device, wherein the microbial material treatment layer is a microbial strain which can absorb and take various organic waste gases as nutrient components, has biological activity and continuous regeneration capacity, can treat partial organic waste gases in the waste gases, particularly remove sulfur-series malodorous gases, and the like) to absorb or degrade partial organic gases; then, the waste gas enters an adsorption device (the interior of the device is provided with adsorption filler, such as one or more of adsorption substances of activated carbon particles, activated carbon fibers, silica gel and the like) so as to adsorb part of harmful gas in the residual waste gas. The adsorption device can be a set, or two sets or more sets which are connected in parallel and used alternately. The adsorption filler can adsorb partial organic waste gas and partial inorganic waste gas in the waste gas, and can discharge waste liquid or high-concentration tail gas after desorption, thereby being repeatedly used for many times. The adsorption filler is an activated carbon filter element which can be integrally taken out and replaced.
The final waste liquid (especially the waste liquid generated by desorption and regeneration of the adsorption device) flows out from the respective waste liquid outlets, flows into a waste water container of a sewage treatment plant, and is purified along with the sewage treatment process.
The purified gas generated by the two processes is directly exhausted from the respective purified gas outlets.
In the above process, the adsorption device may have a high concentration waste gas outlet for discharging high concentration waste gas during regeneration. Preferably, part of the gas finally discharged by the treatment process equipment (especially the high-concentration tail gas generated by desorption and regeneration of the adsorption tower) can be directly introduced into the wastewater of the sewage pool or condensed by a condensing device and then recycled (a cooler or a heat exchanger can be arranged in front of a waste liquid outlet so as to rapidly cool the waste liquid flowing out after desorption or purification, part of the gas is liquefied into condensate after condensation, part of the gas is not condensed and is called non-condensable gas, and the tail gas of the non-condensable gas can be introduced into the sewage pool to be used as explosion gas (no extra gas source is needed, resource consumption is reduced, other impurities are not brought at the same time, and the non-condensable tail gas is easy to overflow in water and is very suitable for being used as explosion gas), and part or all of the tail gas can be returned to a waste gas treatment device for treatment) or.
The biological treatment device is preferably connected with a demisting device in front of the activated carbon adsorption device to remove water vapor in the waste gas, so that the situation that the activated carbon adsorbs excessive water vapor to lose or weaken the adsorption capacity on toxic gas is avoided, and the service life of the activated carbon is prolonged. The adsorption device has a purified gas outlet and a waste liquid outlet.
In the present invention, the exhaust gas pretreatment device may be a pre-adsorption device. The principle is as follows: the incoming waste gas has high concentration and mainly contains VOCs waste gas substances, and a large amount of substances (such as organic solvents or oil) can be recovered through adsorption. And then, degrading partial biodegradable substances by using a biological device, and finally adsorbing the residual waste gas components by using an adsorption method in order to reach the standard or reduce the exhaust concentration as much as possible, so that the treated waste gas is more fully purified and basically has no peculiar smell.
Has the advantages that:
the waste water treated by the device of the invention basically has no emission of malodorous gas, which is beneficial to atmosphere protection. And the toxic gas in the waste gas after two-stage treatment is basically absorbed, decomposed or absorbed and recycled by microorganisms or activated carbon respectively, so that resources are fully utilized. The microbial purification environment-friendly effect is better, the adsorption effect of the activated carbon used in combination with the demisting device is better, and the service cycle is longer. Waste gas concentration is lower in the waste water treatment pipeline in later stage, does not have the hidden danger of explosion or deflagration, reduces the investment cost of later stage waste water treatment equipment, is favorable to the processing of waste water discharge to reach standard.
Drawings
FIG. 1 is a diagram of an apparatus for an exhaust gas treatment process according to the present invention.
In the figure, 1-sewage container; 2-a pre-treatment device; 3-biological bed layer filler and microorganism; 4-a biological treatment device; 5-inlet valve (open for adsorption, closed for desorption); 6-the replaceable filter element can be integrally taken out; 7. a steam valve (open for desorption and closed for adsorption); 10-an adsorption device; 13. 41-waste liquid pipeline; 14-a waste liquid outlet (closed during adsorption and opened during desorption, and a cooler or a heat exchanger can be connected in front of the waste liquid outlet); 21-a sewage treatment system (or a subsequent treatment system); 40-purified gas outlet.
Detailed Description
The system for treating the waste gas escaping from the waste water as shown in fig. 1 has a basically sealed top cover at the opening of a sewage container 1, the top cover is provided with a waste gas outlet, after the waste gas outlet, the waste gas firstly flows through a waste gas pretreatment device 2 and then enters a biological treatment device 4, and the interior of the biological treatment device is provided with biological bed packing and microorganisms 3; the microbial material is a microbial strain which can absorb and take various organic waste gases as nutrient components and can absorb or degrade partial organic gases; then, the waste gas enters an adsorption device 10, and an adsorption filler is arranged in the adsorption device to adsorb part of harmful gas in the residual waste gas; the adsorption filler can adsorb partial organic waste gas and partial inorganic waste gas in the waste gas.
A demisting device is connected after the biological treatment device 4 and before the adsorption device 10 to remove the water vapor in the waste gas.
The resulting waste liquid flows out of the waste liquid outlet 14 into the waste water container 1 of the sewage treatment plant. The purge gas generated by the above process is directly exhausted from the purge gas outlet 9.
The system for treating waste gas escaping from waste water as shown in fig. 1 has a substantially sealed top cover at the opening of a sewage container 1, the top cover is provided with a waste gas outlet, and after the waste gas outlet, the waste gas enters an adsorption device 10 to adsorb part of waste gas and then enters a biological treatment device 4 to absorb or degrade part of organic gas in the rest waste gas; the biological treatment apparatus 4 has a purge gas outlet 40. Then enters an adsorption device 10, and an activated carbon filter element 6 which can be integrally taken out and replaced is arranged in the adsorption device to adsorb part of harmful gas in the residual waste gas.
Claims (4)
1. A system for treating exhaust gas emitted from wastewater collected from a wastewater treatment plant, the system comprising a substantially sealed top cover at an opening of a wastewater treatment plant, the top cover having an exhaust gas outlet, the system comprising:
after the exhaust gas outlet, the following treatment processes are carried out according to the exhaust gas flow path:
the waste gas flows through a waste gas pretreatment device, the waste gas pretreatment device is a pre-adsorption device, and a large amount of organic solvent or oil is adsorbed and recovered by the pre-adsorption device;
then, the waste gas flowing out of the pretreatment device enters a biological treatment device, and biological bed layer fillers and microorganisms are arranged in the biological treatment device; the microbial material treatment layer is a microbial strain which can absorb and take various organic waste gases as nutrient components, and the microbial strain can absorb or degrade part of organic gases;
then, the waste gas flowing out of the biological treatment device enters an adsorption device, and adsorption filler is arranged in the adsorption device to adsorb partial harmful gas in the residual waste gas; the adsorption filler can adsorb part of organic waste gas and part of inorganic waste gas in the waste gas;
the adsorption device is provided with a high-concentration waste gas outlet for discharging high-concentration tail gas during desorption and regeneration; after the high-concentration tail gas is condensed by the condensing device, partial tail gas is liquefied into condensate liquid which flows out of a waste liquid outlet and is recovered; the sewage container is also provided with an aeration device for stirring the wastewater, and part of the uncondensed tail gas is introduced into the aeration device in the sewage container to be used as aeration;
the purified gas generated in the process is directly exhausted from a purified gas outlet on the adsorption device.
2. The system for treating exhaust gases escaping from waste water as set forth in claim 1, wherein: and a demisting device is connected behind the biological treatment device and in front of the adsorption device to remove water vapor in the waste gas.
3. A system for treating exhaust gases escaping from waste water as defined in claim 2, wherein: the adsorption filler is an activated carbon filter element which can be integrally taken out and replaced.
4. A system for treating exhaust gases escaping from waste water as defined in claim 1 or 2, wherein: the waste gas pretreatment device is an alkali washing device capable of performing alkali washing on waste gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110329898.7A CN113041835A (en) | 2016-11-10 | 2016-11-10 | Processing system of exhaust gas that escapes in waste water |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610987947.5A CN106621788A (en) | 2016-11-10 | 2016-11-10 | System for treating flue gas escaping out of waste water |
| CN202110329898.7A CN113041835A (en) | 2016-11-10 | 2016-11-10 | Processing system of exhaust gas that escapes in waste water |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610987947.5A Division CN106621788A (en) | 2016-11-10 | 2016-11-10 | System for treating flue gas escaping out of waste water |
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| Publication Number | Publication Date |
|---|---|
| CN113041835A true CN113041835A (en) | 2021-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610987947.5A Pending CN106621788A (en) | 2016-11-10 | 2016-11-10 | System for treating flue gas escaping out of waste water |
| CN202110329898.7A Pending CN113041835A (en) | 2016-11-10 | 2016-11-10 | Processing system of exhaust gas that escapes in waste water |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610987947.5A Pending CN106621788A (en) | 2016-11-10 | 2016-11-10 | System for treating flue gas escaping out of waste water |
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| CN (2) | CN106621788A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114100348B (en) * | 2021-11-26 | 2023-02-03 | 江苏科威环保技术有限公司 | Integrated treatment system for refining waste gas |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1393279A (en) * | 2001-07-02 | 2003-01-29 | 中国石油化工股份有限公司 | Process for cleaning waste gas |
| CN104001413A (en) * | 2013-02-27 | 2014-08-27 | 上海化学工业区中法水务发展有限公司 | Processing method for malodorous gas of chemical area sewage plant |
| CN104370419A (en) * | 2014-11-13 | 2015-02-25 | 成都绿源新创环保科技有限公司 | Odor purification and aeration integrated system used in sewage treatment plant |
| CN204380507U (en) * | 2014-12-08 | 2015-06-10 | 北京智创环绿科技有限公司 | A kind of integral bio-adsorption combined deodorizing device |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US5106496A (en) * | 1988-04-27 | 1992-04-21 | Ciba-Geigy Corporation | Treatment of volatile organic substances at waste water treatment plants |
| DE4305754A1 (en) * | 1993-02-25 | 1994-09-01 | Reiner Krueger | Process for reducing the emissions from furnaces, incinerators and exhaust air systems and for combined elimination of contaminants in pollutant gases and waste waters |
| JP4490908B2 (en) * | 2005-03-17 | 2010-06-30 | シャープ株式会社 | Wastewater treatment equipment |
| CN201015727Y (en) * | 2006-12-07 | 2008-02-06 | 广州电器科学研究院 | Organic waste gases or stench processing system |
| KR100975301B1 (en) * | 2010-02-02 | 2010-08-12 | (주)엑센 | The integrated deodorization cover system with biofilter for sewage and waste water treatment plant |
| CN201625503U (en) * | 2010-02-23 | 2010-11-10 | 湖北博实城乡环境能源工程有限公司 | High-concentration stench biological treatment device |
| CN204911229U (en) * | 2015-08-25 | 2015-12-30 | 广州宇翔环保技术有限公司 | Spraying waste gas treatment system |
-
2016
- 2016-11-10 CN CN201610987947.5A patent/CN106621788A/en active Pending
- 2016-11-10 CN CN202110329898.7A patent/CN113041835A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1393279A (en) * | 2001-07-02 | 2003-01-29 | 中国石油化工股份有限公司 | Process for cleaning waste gas |
| CN104001413A (en) * | 2013-02-27 | 2014-08-27 | 上海化学工业区中法水务发展有限公司 | Processing method for malodorous gas of chemical area sewage plant |
| CN104370419A (en) * | 2014-11-13 | 2015-02-25 | 成都绿源新创环保科技有限公司 | Odor purification and aeration integrated system used in sewage treatment plant |
| CN204380507U (en) * | 2014-12-08 | 2015-06-10 | 北京智创环绿科技有限公司 | A kind of integral bio-adsorption combined deodorizing device |
Non-Patent Citations (1)
| Title |
|---|
| 姜信真等: "《化工生产基础知识》", 30 September 1983, 化学工业出版社 * |
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