CN101659489A - Method for treating municipal domestic sewage - Google Patents
Method for treating municipal domestic sewage Download PDFInfo
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- CN101659489A CN101659489A CN200810118488A CN200810118488A CN101659489A CN 101659489 A CN101659489 A CN 101659489A CN 200810118488 A CN200810118488 A CN 200810118488A CN 200810118488 A CN200810118488 A CN 200810118488A CN 101659489 A CN101659489 A CN 101659489A
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- adsorption
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- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Treatment Of Water By Ion Exchange (AREA)
Abstract
The invention relates to a method for treating municipal domestic sewage, and belongs to the technical field of wastewater treatment. The method adopts the following technical scheme: the sewage passes through a bar screen to remove big impurities; the effluent enters a grit chamber to remove suspended matters; the effluent enters an anaerobic field and stays for 0.3 to 1 hour to complete anaerobic phosphorus release reaction; the effluent enters an aerobic field and stays for 1 to 4 hours to complete aerobic phosphorus absorption reaction, and then enters a sedimentation tank for sedimentation and sludge-water separation; and the treated waterflow enters an adsorption tank and passes through an adsorption flocbed, organic pollutants in the water are removed through adsorption and flocculation, and various cations are removed through ion exchange function. The method solves the problems that the operating cost is high, the energy consumption is high, the management is complex, the sludge bulking is easy to happen, process equipment cannot meet the requirements of high efficiency and low consumption, and the like.
Description
Technical field
The invention belongs to technical field of waste water processing, particularly a kind of domestic sewage treating method.
Background technology
Environment protection is the fundamental state policy of China.Facts have proved of development of world economy for realizing economic continual and steady development, must be resolved the contradiction of development and environment protection.Along with Chinese society and rapid development of economy, city environmental pollution particularly water pollution problems is on the rise.The quantity discharged of town domestic sewage increases year by year.Contain nutritive substances such as higher nitrogen, phosphorus in the sanitary sewage, the unprocessed rivers,lakes and seas that directly enter are the major causes that cause the waters eutrophication pollution.Owing to the shortage of water resources that " contaminative " causes, become the outstanding problem of serious restriction Chinese society sustained economic development, the assistant officer is to be solved.The emphasis of China's water pollution control progressively changes the control based on the municipal effluent pollution into from based on industrial point source at present.
For a long time, the two stage biological of city domestic sewage is handled many employing activated sludge processes, but this kind method exists capital cost, running cost height, and energy consumption is big, and complex management is prone to the sludge bulking phenomenon, and processing unit can not satisfy problems such as efficient requirement.For the such inadequate resource of China, populous developing country,, and be not suitable for China's actual conditions from the angle of Sustainable development.
Summary of the invention
In order to overcome above difficulty, it is low to the invention provides a kind of working cost, and energy consumption is little, and is simple to operate, and biology that treatment effect is good and chemical method link with the method for handling city domestic sewage.
For achieving the above object, the present invention is by the following technical solutions:
1, sewage is removed big foreign material through between grid;
2,1 water outlet enters settling pit, removes suspended substance;
3,2 water outlet enters anaerobism ground, stops 0.3～1 hour, finishes the anaerobic phosphorus release reaction;
4,3 water outlet enters aerobic ground again, stops 1～4 hour, finishes aerobic suction phosphorus reaction, enters the settling tank precipitation again, makes mud-water separation;
5,4 treated waters are flow to into adsorption tank, through the adsorption-flocculation layer, by the organic pollutant in the adsorption-flocculation removal water; And remove multiple positively charged ion by ion exchange.
Beneficial effect of the present invention: behind sewage process anaerobic pond and the Aerobic Pond, phosphorus content wherein obviously reduces, and through behind the adsorption tank, organism and positively charged ion have obtained tangible removal, and treatment effect is good, and used sorbent material cost is low.
Description of drawings
Fig. 1 is a process flow diagram of the present invention.
Embodiment
Sanitary sewage at first passes through between grid, removes big foreign material; Enter settling pit then, remove suspended substance, the residence time is 1～2 hour; Water outlet enters anaerobism ground, stops 0.6 hour, finishes the anaerobic phosphorus release reaction; Water outlet enters aerobic ground again, stops 2.5 hours, finishes aerobic suction phosphorus reaction, enters the settling tank precipitation again, and muddy water obtains separating; Current enter adsorption tank, through the adsorption-flocculation layer, by the organic pollutant in the adsorption-flocculation removal water; And remove multiple positively charged ion by ion exchange, adding diatom content is 90%～98% diatomite in the adsorption tank, has added the flocculation agent (common inorganic or organic floculants such as Tai-Ace S 150, aluminum chloride, polyacrylamide or iron trichloride) of different quantities in this smart soil.Remove organic pollutant in the water by adsorption-flocculation, and removed multiple positively charged ion by ion exchange.Water quality situation before sewage enters between grid is as follows: suspension content is 8.6mg/L, and COD is 92mg/L, and the pH value is 7, Ca
2+Content is 87.17mg/L, Mg
2+Content is 63.85mg/L.Recording suspension content in the water outlet is 5.1mg/L, and COD is 45mg/L, Ca
2+Content is 40.6mg/L, Mg
2+Content is 38.9mg/L, reaches the water quality standard of industrial circulating cooling water.
Claims (1)
1. domestic sewage treating method may further comprise the steps:
(1) sewage is removed big foreign material through between grid;
(2) water outlet enters settling pit, removes suspended substance;
(3) water outlet enters anaerobism ground, stops 0.3～1 hour, finishes the anaerobic phosphorus release reaction;
(4) water outlet enters aerobic ground again, stops 1～4 hour, finishes aerobic suction phosphorus reaction, enters the settling tank precipitation again, makes mud-water separation;
(5) (4) treated water is flow to into adsorption tank, through the adsorption-flocculation layer, remove organic pollutant in the water, and remove multiple positively charged ion by ion exchange by adsorption-flocculation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810118488A CN101659489A (en) | 2008-08-26 | 2008-08-26 | Method for treating municipal domestic sewage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810118488A CN101659489A (en) | 2008-08-26 | 2008-08-26 | Method for treating municipal domestic sewage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101659489A true CN101659489A (en) | 2010-03-03 |
Family
ID=41787773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810118488A Pending CN101659489A (en) | 2008-08-26 | 2008-08-26 | Method for treating municipal domestic sewage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101659489A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103265152A (en) * | 2013-06-14 | 2013-08-28 | 山西太钢不锈钢股份有限公司 | Domestic sewage treatment method |
| CN108358403A (en) * | 2018-05-03 | 2018-08-03 | 环境保护部南京环境科学研究所 | A kind of domestic sewage in rural areas purification slot device |
-
2008
- 2008-08-26 CN CN200810118488A patent/CN101659489A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103265152A (en) * | 2013-06-14 | 2013-08-28 | 山西太钢不锈钢股份有限公司 | Domestic sewage treatment method |
| CN108358403A (en) * | 2018-05-03 | 2018-08-03 | 环境保护部南京环境科学研究所 | A kind of domestic sewage in rural areas purification slot device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| DD01 | Delivery of document by public notice |
Addressee: Ji Nan Document name: Notification of Publication of the Application for Invention |
|
| DD01 | Delivery of document by public notice |
Addressee: Wang Chong Document name: Notification of before Expiration of Request of Examination as to Substance |
|
| DD01 | Delivery of document by public notice |
Addressee: Ji Nan Document name: Notification that Application Deemed to be Withdrawn |
|
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100303 |