CN101811774B - Process for treating wastewater, fume and dust - Google Patents
Process for treating wastewater, fume and dust Download PDFInfo
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- CN101811774B CN101811774B CN2009100584149A CN200910058414A CN101811774B CN 101811774 B CN101811774 B CN 101811774B CN 2009100584149 A CN2009100584149 A CN 2009100584149A CN 200910058414 A CN200910058414 A CN 200910058414A CN 101811774 B CN101811774 B CN 101811774B
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Abstract
The invention relates to a process for treating wastewater, fume and dust. Fume and dust are collected in a desulfurization and dedusting tower; a desulfurization and dedusting agent is added into the wastewater precipitated after subjected to anaerobic and aerobic reactions to form water fog which is then fed into the desulfurization and dedusting tower to be in full contact with the fume and the dust. Wastewater enters a setting groove for settling after reacting in the high-efficiency desulfurization and dedusting tower, and supernate is subjected to artificial wetland settlement and is discharged after reaching standards; and the fume treated in the high-efficiency desulfurization and dedusting tower is fed into a wind window through a draught fan and is discharged after reaching standards. By combining a wastewater treatment line and a fume and dust treatment line and mutually and comprehensively utilizing, the effect of serving multiple purposes can be obtained; by using the wastewater to treat dust and fume, a desulfurization agent for treating dust and fume and clean water for treating dust and fume can be saved; by using dust and fume to treat wastewater, CODcr (Chemical Oxygen Demand) and SS (Solid Suspension) in the wastewater can be reduced; and the expense of several million yuan for purchasing an activated carbon decolorized adsorption bed for treating the wastewater can be saved.
Description
Technical field
The present invention relates to a kind of waste water and fume and dust treatment technology.
Background technology
At present a lot of chemical enterprises all waste water treatment process most adopt be: waste water → anaerobism → aerobic → sedimentation → discharging, waste water also has certain CODcr, colourity and suspended substance (SS) after the anaerobic-aerobic reaction, as the employed Alcohol Production line of applicant, waste water COD cr80-100mg/L, colourity 90-100 times, SS80-100mg/L.Directly be difficult to reach national grade one discharge standard through sedimentation discharging colourity and suspended substance.In order to reach national grade one discharge standard, also to before discharging, drop into activated carbon decolorizing adsorption bed or other facility, could arrive national grade one discharge standard after treatment.But its investment is very big, makes cost for wastewater treatment very high.
Meanwhile, chemical enterprise all can contain a large amount of SO in the flue gas flue dust of coal combustion generation every day
2, CO
2Deng sour gas, discharging again after needing to handle.These contained in flue gas flue dust sour gas are water-soluble, add efficient desulfurizing agent and generate precipitation by it and sour gas reaction in water, reach emission standard through sedimentation again.The smoke treatment flue dust need consume a large amount of clear water.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of waste water and the flue gas flue dust focuses on and in addition comprehensive utilization mutually, finally allows waste water and flue gas flue dust realize the technology of qualified discharge.
For solving the problems of the technologies described above, the present invention includes following steps:
(1) sends in the efficient desulfurizing and dust collecting tower behind the flue gas flue dust collecting that the steam coal burning produces;
(2) waste water precipitates behind anaerobism, aerobic reaction; Replenish clear water in the waste water of post precipitation, in above-mentioned water, send into the desulfurization and dedusting tower after the agent of adding desulfurization and dedusting, form water smoke;
(3) flue gas flue dust and the abundant contact reacts of water in the efficient desulfurizing and dust collecting tower;
(4) water behind efficient desulfurizing and dust collecting tower internal reaction enters sedimentation in the sedimentation ditch, with settled supernatant liquor qualified discharge after the artificial swamp sedimentation again;
(5) flue gas behind efficient desulfurizing and dust collecting tower internal reaction is sent into the air regulator qualified discharge through induced draft fan.
Adopt the inventive method, made full use of the carbonaceous material in the flue gas flue dust, these carbonaceous materials have certain decolouring adsorption function, can adsorb certain pigment, reduce certain CODcr and suspended substance (SS).Utilize the efficient desulfurizing and dust collecting tower to substitute the activated carbon decolorizing adsorption bed, waste water is fed in the efficient desulfurizing and dust collecting tower, CODcr, colourity and suspended substance in the flue gas flue dust absorption waste water in the efficient desulfurizing and dust collecting tower.And come to contain in the smoke treatment flue dust a large amount of sour gas by in waste water, adding sweetening agent, and not only saved clear water, waste water shows alkaline alternative partial desulfurization agent simultaneously.Flue gas flue dust and waste water through comprehensive utilization is handled may ultimately reach discharging standards.
Description of drawings
Fig. 1 is a process flow sheet of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.But this should be interpreted as that the scope of the above-mentioned theme of invention only limits to following embodiment.
As shown in Figure 1, send in the efficient desulfurizing and dust collecting tower behind the flue gas flue dust collecting that the steam coal burning produces; Simultaneously factory effluent is precipitated behind anaerobism, aerobic reaction, in settling bowl, replenish clear water in the waste water of post precipitation, in water, send into the desulfurization and dedusting tower after the agent of adding desulfurization and dedusting then, form water smoke; SO in sweetening agent in the water smoke and the flue gas
2Generate precipitation Deng the acidic substance reaction, water smoke contacts fully with flue dust simultaneously, and carbonaceous material in the flue dust adsorbs materials such as CODcr in the waste water and colourity.Waste water behind efficient desulfurizing and dust collecting tower internal reaction enters sedimentation in the sedimentation ditch, and sedimentable matter enters coal ash, and supernatant liquor is qualified discharge after the artificial swamp sedimentation again; Flue gas behind efficient desulfurizing and dust collecting tower internal reaction is sent into the air regulator qualified discharge through induced draft fan.
Produce process application of the present invention per year 50,000 tons Alcohol Production line to the applicant, this production line will produce 1600 cubical waste water, 40 tons of coal ash and fume every day.Company uses the waste water after anaerobic-aerobic is handled to replace clear water, saves 1600 cubes in clear water every day.Because wastewater pH is alkalescence, save sweetening agent 800kg every day simultaneously, its clearance reaches 99.5%.Waste water COD cr50-80mg/L after the spraying of efficient desulfurizing and dust collecting tower is handled, its clearance reaches 20%; Colourity 20-40 times, its clearance reaches 60%; SS40-60mg/L, its clearance reaches 40%; PH6.5-7.5, conformance with standard 6-9.
Adopt Technology of the present invention, by the efficient desulfurizing and dust collecting tower with the wastewater treatment line and the fume and dust treatment toe-in lumps together and in addition comprehensive utilization mutually, obtained the effect of achieving many things at one stroke: utilize waste water to be used for handling fume, save the sweetening agent of handling fume and save the clear water that the processing fume consumes.Utilize fume to be used for handling waste water, fall the CODcr and the SS of waste water; Save the expense of buying the activated carbon decolorizing adsorption bed of handling waste water and reach millions of units.
Under the situation that does not break away from spirit of the present invention and essential characteristic, the present invention can be embodied as other concrete forms.Therefore example of the present invention can be thought and all is illustratives in all respects and do not have restricted; be better than the scope of above-mentioned specification sheets by the indicated scope of the invention of additional claim, therefore contain within it and the claim equivalent scope within all changes all be included among its scope required for protection.
Claims (1)
1. waste water and fume and dust treatment technology is characterized in that: comprise the steps
(1) sends in the efficient desulfurizing and dust collecting tower behind the flue gas flue dust collecting that the steam coal burning produces;
(2) waste water precipitates behind anaerobism, aerobic reaction; Replenish clear water in the waste water of post precipitation, in above-mentioned water, send into the desulfurization and dedusting tower after the agent of adding desulfurization and dedusting, form water smoke;
(3) flue gas flue dust in the efficient desulfurizing and dust collecting tower and the abundant contact reacts of water that has added the desulfurization and dedusting agent;
(4) water behind efficient desulfurizing and dust collecting tower internal reaction enters sedimentation in the sedimentation ditch, and supernatant liquor is qualified discharge after the artificial swamp sedimentation again;
(5) flue gas behind efficient desulfurizing and dust collecting tower internal reaction is sent into the air regulator qualified discharge through induced draft fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100584149A CN101811774B (en) | 2009-02-24 | 2009-02-24 | Process for treating wastewater, fume and dust |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100584149A CN101811774B (en) | 2009-02-24 | 2009-02-24 | Process for treating wastewater, fume and dust |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101811774A CN101811774A (en) | 2010-08-25 |
| CN101811774B true CN101811774B (en) | 2011-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100584149A Active CN101811774B (en) | 2009-02-24 | 2009-02-24 | Process for treating wastewater, fume and dust |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104482099A (en) * | 2014-11-21 | 2015-04-01 | 重庆隆鑫发动机有限公司 | Damping assembly of split damp |
| CN104998529A (en) * | 2015-02-12 | 2015-10-28 | 太仓意发石化矿材检测有限公司 | Method for utilizing boiler waste gas in fermentation alcohol production |
| CN113680192A (en) * | 2021-08-14 | 2021-11-23 | 江苏神舟灯饰有限公司 | Waste smoke and waste gas treatment process |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1375349A (en) * | 2001-03-20 | 2002-10-23 | 尚运慧 | Neutralizing treatment process of coking effluent and waste flue gas |
| CN1535756A (en) * | 2003-05-23 | 2004-10-13 | 程志久 | Method ofr desulfurization of waste gas and coking waste water treatment and its equipment |
-
2009
- 2009-02-24 CN CN2009100584149A patent/CN101811774B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1375349A (en) * | 2001-03-20 | 2002-10-23 | 尚运慧 | Neutralizing treatment process of coking effluent and waste flue gas |
| CN1535756A (en) * | 2003-05-23 | 2004-10-13 | 程志久 | Method ofr desulfurization of waste gas and coking waste water treatment and its equipment |
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| CN101811774A (en) | 2010-08-25 |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: QIANHE ADDITIVES FOOD CO., LTD. Free format text: FORMER NAME: SICHUAN HENGTAI ENTERPRISE INVESTMENT CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 620010 Meishan province Sichuan City Dongpo District South Min Jia Du Patentee after: Qianhe Flavouring Food Co., Ltd. Address before: 620010 Meishan province Sichuan City Dongpo District South Min Jia Du Patentee before: Sichuan Hengtai Enterprise Investment Co., Ltd. |