CN1262240A - Process for treating sewage in urban area - Google Patents
Process for treating sewage in urban area Download PDFInfo
- Publication number
- CN1262240A CN1262240A CN99112061A CN99112061A CN1262240A CN 1262240 A CN1262240 A CN 1262240A CN 99112061 A CN99112061 A CN 99112061A CN 99112061 A CN99112061 A CN 99112061A CN 1262240 A CN1262240 A CN 1262240A
- Authority
- CN
- China
- Prior art keywords
- sewage
- oxidizing
- oxidation
- sedimentation tank
- preliminary sedimentation
- Prior art date
- 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
Links
Images
Classifications
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
A new process for treating sewage in urban area includes passing sewage through grate and sand depositing pool, bio-oxidizing in oxidizing ditch, depositing and flowing into contact pool to which disinfectant is added. It features that said sand depositing pool is a vortex-type one, the sewage must be forced to pre-deposit before bio-oxidizing, the deposited sludge is returned back to oxidizing ditch and rest of sludge is returned back to pre-depositing pool. Its advantages are high effect on removing COD, BOD and SS, low energy consumption, high flushing resistance, and stable running.
Description
The present invention relates to a kind of sewage treatment process.
During Treating Municipal Sewage, generally enter the aerated grit chamber desanding, carry out bio-oxidation through oxidation ditch again, precipitate then, enter contact tank at last, and add sterilizing agent to contact tank by grid relief sewage.But along with industrial boom, the ratio of industrial sewage is increasing in the municipal effluent, as the sewage remittance of industries such as papermaking, printing and dyeing, chemical industry, greatly reduces the biodegradability of municipal effluent.Even if these industrial sewages have been done processing by relevant producer, reached the industry emission standard, also can produce bigger disadvantageous effect, because the organic pollutant intractability that remains in the water outlet after handling is bigger in factory to municipal sewage treatment.Thereby handle this class municipal effluent, its poor effect with existing method.
The purpose of this invention is to provide a kind of novel urban sewage treatment process, this technology can be handled industrial sewage large percentage, the relatively poor municipal effluent of pollutant's biodegradability, can satisfy the current sewage discharge requirement that improves day by day again, promptly have the biological denitrificaion function.。
Technology of the present invention, comprise and allow sewage by grid and settling pit, in oxidation ditch, carry out bio-oxidation, precipitate then, enter contact tank at last, and, it is characterized in that described settling pit is the eddy current settling pit to wherein adding sterilizing agent, before the oxidation ditch oxidation, also to handle through strengthening preliminary sedimentation tank.
Technology of the present invention can be removed COD, BOD and the SS in the municipal effluent effectively, and has that low, the shock-resistant ability of energy consumption is strong, simple, stable, the high treating effect of management.
Below by embodiment and description of drawings the present invention.
Accompanying drawing is a schema of the present invention.
Certain municipal sewage plant, handle the water yield 100,000 T/d, industrial sewage accounts for 85%, wherein papermaking wastewater accounts for 50%, and dyeing and printing sewage accounts for 30%, adopts this art breading, earlier sewage is removed bigger floating matter and suspended substance through grid, after entering eddy current settling pit removal inorganic impurity, enter the reinforcement preliminary sedimentation tank again, remove portion C OD, BOD and most of SS by precipitation, contact percolation effect; Improve the biodegradability of sewage by the acidication effect; Enter the Orbal oxidation ditch again, further remove residual COD, BOD and finish biological denitrification process; Enter second pond and remove SS, enter contact tank at last and carry out sterilization and disinfection to wherein adding disinfection agent of chlorine dioxide.The mud that avales in the second pond is back in the Orbal oxidation ditch; Residual sludge reflux is to strengthening preliminary sedimentation tank.Adsorb saturated after, excess sludge enters sludge thickener, does ultimate disposal again behind mechanical dehydration.
This technology has following characteristics:
1. do not adopt traditional aerated grit chamber, and adopt the eddy current settling pit that takes up an area of province, sand separation efficient height, not oxygenation (oxygenation is just heavy unfavorable to follow-up reinforcement), do not consume organic carbon source and other nutritive element.
2. do not establish preliminary sedimentation tank before the general oxidation ditch, this technology industry has not only been established preliminary sedimentation tank, and is strengthened, and its purpose is:
(1) by under the situation that is deposited in consumed power not, removes the pollution load 30% or more, with the energy consumption of minimizing oxidation ditch.
(2) residual sludge reflux to strengthening just heavy irrigation channel head end, in flow process with water inlet in pollutant mix and contact so as by biological absorption, absorb and remove part pollutant, particularly to being difficult to the removal of biological degradation organic pollutant adsorption.
(3) in preliminary sedimentation tank generation acidication and contact percolation effect.By the biodegradability of acidication raising sewage, for follow-up oxygen consumption processing creates conditions,, hold back SS by the contact percolation effect of suspended sludge layer, use clarification of water.
3. strengthen preliminary sedimentation tank and sewage is sent into preliminary sedimentation tank, do not establish reflector by central draft tube; Do not add a cover, V-notch weir catchments; For improving the contact percolation effect, the pond available depth is not less than 4.0m, and the crest of weir load is not more than 2.91/s.m, and hydraulic load is with common preliminary sedimentation tank.
4. the reinforcement preliminary sedimentation tank is not established machinery and is scraped mud equipment.The reinforcement preliminary sedimentation tank is a planar square, during and the length of side＞7m, adopts the multibuchet spoil disposal, 60 ° at bucket inclination angle.
5. strengthen the continuous variation that preliminary sedimentation tank adapts to water quality and quantity, turndown ratio is big, pH maximum changing range 3.5-10.0, best 5.5-6.5; Hydraulic detention time 3-5hr.Usually operation at normal temperatures, when temperature changed between 10-20 ℃, acidication still can normally move.
The parameter that some steps adopted in this technology is as follows:
The eddy current sand setting:
Waterpower surface load: 160
-250m
3/ m
2Hr
Hydraulic detention time: 20
-30s
It is just heavy to strengthen:
Waterpower surface load: 0.83
-1.25m
3/ m
2Hr
The depth of water: 3.8m
Hydraulic detention time: 3.3
-4.6hr
Crest of weir load: 1.2
-1.81/ms
The Orbal oxidation ditch:
Sludge loading: 0.065kgBOD
5/ kgMLSSd
Volumetric loading: 0.292kgBOD
5/ kgMLSSd
MLSS ：4.5g/l
Mud age: 17.5d
The COD of water outlet after this art breading
Cr＜120mg/l, BOD
5＜30mg/l, SS＜30mg/l, TN＜15mg/l.
Claims (2)
1. novel urban sewage treatment process, comprise and allow sewage by grid and settling pit, in oxidation ditch, carry out bio-oxidation, precipitate then, enter contact tank at last, and, it is characterized in that described settling pit is the eddy current settling pit to wherein adding sterilizing agent, before the oxidation ditch oxidation, also to handle through strengthening preliminary sedimentation tank.
2. as claim 1 described sewage treatment process, it is characterized in that the mud that will avale in the second pond is back in the oxidation ditch; Residual sludge reflux is to strengthening preliminary sedimentation tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99112061A CN1262240A (en) | 1999-01-31 | 1999-01-31 | Process for treating sewage in urban area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99112061A CN1262240A (en) | 1999-01-31 | 1999-01-31 | Process for treating sewage in urban area |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1262240A true CN1262240A (en) | 2000-08-09 |
Family
ID=5275402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99112061A Pending CN1262240A (en) | 1999-01-31 | 1999-01-31 | Process for treating sewage in urban area |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1262240A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1303009C (en) * | 2004-09-30 | 2007-03-07 | 中国科学院生态环境研究中心 | Cleaning type integrated effluent disposal system and operation method |
| CN100548904C (en) * | 2007-06-07 | 2009-10-14 | 无锡市联创市政工程设计有限公司 | High-efficiency combined-building type raceway-shaped oxidation ditch |
| CN101898853A (en) * | 2010-07-06 | 2010-12-01 | 国家城市给水排水工程技术研究中心 | Sewage primary sedimentation treatment method and system for removing intensified suspended solid inorganic component |
| CN103203126A (en) * | 2012-12-12 | 2013-07-17 | 北京城市排水集团有限责任公司 | Sewage treatment plant aerated grit system control apparatus and control method thereof |
| CN103496822A (en) * | 2013-09-26 | 2014-01-08 | 苏州紫兴纸业有限公司 | Aerobiotic biochemical treatment system and technology for wastewater generated in copper printing paper production process |
| CN106007213A (en) * | 2016-07-12 | 2016-10-12 | 佛山杰致信息科技有限公司 | Sewage treatment system |
-
1999
- 1999-01-31 CN CN99112061A patent/CN1262240A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1303009C (en) * | 2004-09-30 | 2007-03-07 | 中国科学院生态环境研究中心 | Cleaning type integrated effluent disposal system and operation method |
| CN100548904C (en) * | 2007-06-07 | 2009-10-14 | 无锡市联创市政工程设计有限公司 | High-efficiency combined-building type raceway-shaped oxidation ditch |
| CN101898853A (en) * | 2010-07-06 | 2010-12-01 | 国家城市给水排水工程技术研究中心 | Sewage primary sedimentation treatment method and system for removing intensified suspended solid inorganic component |
| CN101898853B (en) * | 2010-07-06 | 2012-07-04 | 国家城市给水排水工程技术研究中心 | Sewage primary sedimentation treatment method and system for removing intensified suspended solid inorganic component |
| CN103203126A (en) * | 2012-12-12 | 2013-07-17 | 北京城市排水集团有限责任公司 | Sewage treatment plant aerated grit system control apparatus and control method thereof |
| CN103496822A (en) * | 2013-09-26 | 2014-01-08 | 苏州紫兴纸业有限公司 | Aerobiotic biochemical treatment system and technology for wastewater generated in copper printing paper production process |
| CN106007213A (en) * | 2016-07-12 | 2016-10-12 | 佛山杰致信息科技有限公司 | Sewage treatment system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101000742B1 (en) | Improvement of Phosphorus Removal Efficiency by Modification of Rectangular Sedimentation Basin | |
| CN206476860U (en) | A kind of oily waste water treatment reclamation set | |
| CN102718353A (en) | System of and method for advanced treatment of refractory industrial wastewater | |
| CN108483651A (en) | The modified form multi-mode operation A adjusted based on water quality and quantity2O reaction tanks and sewage disposal system | |
| CN101746931B (en) | Denitrification dephosphorization biological treatment and filtration integral sewage treatment system and method thereof | |
| CN1235814C (en) | System and method for treating of sewage by combined artificial wet land | |
| CN111056698A (en) | Wastewater treatment process of multistage biological contact oxidation method | |
| CN1283562C (en) | System and method for urban sewage chemical-biologic composite deep phosphorous removal | |
| CN108275828A (en) | A kind of light polluted water purification processing method and processing device | |
| CN1262240A (en) | Process for treating sewage in urban area | |
| CN1803675A (en) | Method and apparatus for advanced treatment and reclamation of industrial wastewater | |
| CN101050013A (en) | Equipment and technique for treating organic iron in sewage | |
| CN1170784C (en) | Dry nitrilon waste water treating process | |
| CN101898853B (en) | Sewage primary sedimentation treatment method and system for removing intensified suspended solid inorganic component | |
| CN214611872U (en) | A integration sewage treatment plant for chemical wastewater handles | |
| CN212504433U (en) | Black and odorous river water body treatment system based on ultramicro separation and aerobic biochemical treatment | |
| CN1490260A (en) | ICAST sewage treating method for recovering and use in housing estate and self-controlled monitor | |
| CN209537237U (en) | A kind of integrated A/O sewage disposal system | |
| CN209507895U (en) | A kind of biochemical sewage processing pond | |
| CN1162360C (en) | Process for treating sewage of oil recovery | |
| CN113651495A (en) | Steel drum paint spraying line wastewater treatment process | |
| CN207827952U (en) | A kind of paper waste advanced treatment apparatus | |
| CN106746383A (en) | Municipal sewage treatment reinforcing operation method and device that a kind of biochemistry pool stops between being aerated | |
| CN208218511U (en) | The processing unit of high-concentration sewage | |
| CN105129947B (en) | Device for processing pollutant which can hardly be degraded biologically |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |