CN1778713A - Sewage treatment - Google Patents
Sewage treatment Download PDFInfo
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- CN1778713A CN1778713A CN 200410036343 CN200410036343A CN1778713A CN 1778713 A CN1778713 A CN 1778713A CN 200410036343 CN200410036343 CN 200410036343 CN 200410036343 A CN200410036343 A CN 200410036343A CN 1778713 A CN1778713 A CN 1778713A
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- anaerobic reactor
- aeration tank
- tank
- entering
- outfall
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Abstract
A sewage treatment is carried out by entering raw water into anaerobic reactor, entering anaerobic reactor outfall into sewage reflux tank, refluxing partial water into raw water inlet of anaerobic reactor, entering reflux tank outfall into oxygen biological selector, entering selector outfall into aeration tank, entering aeration tank outfall into deposition pool, discharging outfall directly, returning mud in deposition tank into aeration tank, discharging residual mud into acidifying pool, acid decomposing and discharging into anaerobic pool. The anaerobic reactor consists of filler bed and mud bed in height proportion of 1-1.5, organics load of anaerobic reactor can reach to 15-30kgBOD5/m3.d, the operating temperature is 35-60 DEG C, retention time of biological selector is 10-40mins, operating temperature of biological selector and anaerobic pool is 15-40 DEG C, pH is 6-9, operating temperature of acidifying pool is 30-50 DEG C and pH is 5-8. Its advantages include small floor area, higher organics treating load and no residual mud.
Description
One, technical field: the present invention relates to a kind of process for treating high-concentration sewage.
Two, background technology: sewage disposal mainly contains anaerobic process and aerobic method.Wherein aerobic method has widely at sewage treatment area and uses, and has characteristics such as simple to operate, that impact resistance is strong, but exists that surplus sludge volume is big, energy consumption is high and problem such as floor space is big.The technical process of the method that Chinese patent CN1009298 proposes is made up of contact-oxidation pool, aeration tank, solid-liquid separator, and biological contact tank adopts the high loading mode to move, and the aeration tank adopts the underload mode to move, and organic loading can reach 7KgCOD/m
3D, the water conservancy residence time is 8 hours.This technology exists problems such as surplus sludge volume is big, energy consumption is high, floor space is big.
Three, summary of the invention: purpose of the present invention be to propose a kind of new sewage water treatment method, problem such as the surplus sludge volume that solves existing technology is big, energy consumption is high, floor space is big.
Flow process of the present invention mainly contains following a few part and forms in proper order: anaerobic reactor, sewage backflow jar, aerobe selector switch, aeration tank, mudpan, mud acidification pool.Former water at first enters anaerobic reactor, and most of organism decomposes in anaerobic reactor, and remaining organism mainly is present in the water with the organic acid form, and the degradation production methane gas is discharged by the anaerobic reactor top.The anaerobic reactor water outlet enters the sewage backflow jar, and portion water is back to the former water inlet of anaerobic reactor, as long as the effect of recirculation water has two, one is the basicity that increases raw water, reduces the consumption of alkali; Another effect is the upflow velocity that increases water in the reactor device, promotes the formation of anaerobic grain sludge.The return tank water outlet enters into the aerobe selector switch, and the effect of aerobe selector switch mainly is the thread microbial sludge bulking of control.Because the principal pollutant in the water outlet of anaerobic reactor are organic acids, the organic acid content height easily causes Filamentous Bulking.The hydraulic detention time of aerobe selector switch is shorter, and organic concentration is higher in the selector switch, and cotton-shaped bacteria growing speed is higher, has controlled hyphomycetic growth, thereby has reached the purpose of control sludge bulking.The selector switch water outlet enters the aeration tank, and the aeration tank also can be operated under lower load.The aeration tank water outlet enters settling tank, and water outlet is directly discharged, and the mud in the settling tank is mainly got back in the aeration tank, and excess sludge enters in the anaerobic reactor after entering acidification pool acidifying decomposition.
Anaerobic reactor among the present invention is made up of bed of packings and Sludge Bed, and the ratio of bed of packings height and Sludge Bed height is about 1～1.5.The anaerobic reactor of this structure have allow upflow velocity fast, handle characteristics such as load height and sludge loss are few.The organic loading of anaerobic reactor can reach 15～30KgBOD
5/ m
3.d, service temperature is 35～60 ℃, is preferably 40～50 ℃.The residence time of biological selector is 10～40 minutes, and the service temperature of biological selector and aeration tank is 15～40 ℃, and pH value is 6～9.The service temperature of acidification pool is 30～50 ℃, and pH value is 5～8.
The organic loading of anaerobic reactor can reach 15～30KgBOD in the flow process provided by the invention
5/ m
3.d, the selector switch residence time is 10～40 minutes, and the aeration tank organic loading is 0.4～2.0KgBOD
5/ m
3.d.In the present invention, anaerobic process mud rate of growth is lower, because the organic loading of aeration tank is lower, the mud rate of growth of aeration tank is also lower, and a spot of excess sludge turns back to anaerobic reactor and further handles after entering acidification pool acidifying decomposition.Therefore, can accomplish not have excess sludge or essentially no excess sludge in the technology provided by the invention produces.
The present invention compares with other technology of handling similar waste water, has the advantages that to handle organic loading height, little, the no excess sludge of floor space or essentially no excess sludge.The present invention can handle waste water such as wine brewing, food, medicine and petrochemical complex, and influent density is 1000～2000mg/L, and the waste strength after the processing can reach below the 100mg/L.
Four, description of drawings: do not have.
Five, specific embodiment:
Embodiment
Claims (1)
1, a kind of sewage water treatment method, former water at first enters anaerobic reactor, the anaerobic reactor water outlet enters the sewage backflow jar, portion water is back to the former water inlet of anaerobic reactor, the return tank water outlet enters into the aerobe selector switch, the selector switch water outlet enters the aeration tank, the aeration tank water outlet enters settling tank, water outlet is directly discharged, and the mud in the settling tank is mainly got back in the aeration tank, after excess sludge enters acidification pool acidifying decomposition, enter in the anaerobic reactor, it is characterized in that anaerobic reactor is made up of bed of packings and Sludge Bed, the ratio of bed of packings height and Sludge Bed height is about 1～1.5, and the organic loading of anaerobic reactor can reach 15～30KgBOD
5/ m
3.d, service temperature is 35～60 ℃, is preferably 40～50 ℃, and the residence time of biological selector is 10～40 minutes, and the service temperature of biological selector and aeration tank is 15～40 ℃, and pH value is 6～9, and the service temperature of acidification pool is 30～50 ℃, and pH value is 5～8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410036343 CN1778713A (en) | 2004-11-19 | 2004-11-19 | Sewage treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410036343 CN1778713A (en) | 2004-11-19 | 2004-11-19 | Sewage treatment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1778713A true CN1778713A (en) | 2006-05-31 |
Family
ID=36769188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410036343 Pending CN1778713A (en) | 2004-11-19 | 2004-11-19 | Sewage treatment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1778713A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100418908C (en) * | 2006-10-30 | 2008-09-17 | 江明辉 | Deeply sewage treating method and its device without mud discharging |
| CN101805100A (en) * | 2010-05-11 | 2010-08-18 | 天津大学 | Method for improving activated sludge concentration in alcohol wastewater full-distillage anaerobic digestion process |
| CN101734791B (en) * | 2008-11-26 | 2011-07-27 | 孙光志 | Method for treating biological sewage |
| CN102515427A (en) * | 2011-12-07 | 2012-06-27 | 浙江省环境保护科学设计研究院 | Printing and dyeing waste water treatment system and process with low yield of sludge |
| CN105502815A (en) * | 2015-12-10 | 2016-04-20 | 南京国能环保工程有限公司 | Treatment method of sludge drying condensate water |
| CN110482693A (en) * | 2019-07-22 | 2019-11-22 | 四川工商职业技术学院 | A kind of cultural method of anaerobic grain sludge |
-
2004
- 2004-11-19 CN CN 200410036343 patent/CN1778713A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100418908C (en) * | 2006-10-30 | 2008-09-17 | 江明辉 | Deeply sewage treating method and its device without mud discharging |
| CN101734791B (en) * | 2008-11-26 | 2011-07-27 | 孙光志 | Method for treating biological sewage |
| CN101805100A (en) * | 2010-05-11 | 2010-08-18 | 天津大学 | Method for improving activated sludge concentration in alcohol wastewater full-distillage anaerobic digestion process |
| CN101805100B (en) * | 2010-05-11 | 2012-03-28 | 天津大学 | Method for improving activated sludge concentration in alcohol wastewater full-distillage anaerobic digestion process |
| CN102515427A (en) * | 2011-12-07 | 2012-06-27 | 浙江省环境保护科学设计研究院 | Printing and dyeing waste water treatment system and process with low yield of sludge |
| CN105502815A (en) * | 2015-12-10 | 2016-04-20 | 南京国能环保工程有限公司 | Treatment method of sludge drying condensate water |
| CN105502815B (en) * | 2015-12-10 | 2018-10-12 | 南京国能环保工程有限公司 | A kind of sludge drying condensation method for treating water |
| CN110482693A (en) * | 2019-07-22 | 2019-11-22 | 四川工商职业技术学院 | A kind of cultural method of anaerobic grain sludge |
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