CN101186411A - Method for treating hydrolytic acidification aerobic active sewage - Google Patents
Method for treating hydrolytic acidification aerobic active sewage Download PDFInfo
- Publication number
- CN101186411A CN101186411A CNA2007101567372A CN200710156737A CN101186411A CN 101186411 A CN101186411 A CN 101186411A CN A2007101567372 A CNA2007101567372 A CN A2007101567372A CN 200710156737 A CN200710156737 A CN 200710156737A CN 101186411 A CN101186411 A CN 101186411A
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- Prior art keywords
- anaerobic
- sewage
- temperature
- treatment
- aerobic
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- 239000010865 sewage Substances 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 19
- 230000003301 hydrolyzing effect Effects 0.000 title abstract 2
- 230000020477 pH reduction Effects 0.000 title abstract 2
- 230000000694 effects Effects 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 230000003647 oxidation Effects 0.000 claims description 8
- 238000007254 oxidation reaction Methods 0.000 claims description 8
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 6
- 239000000460 chlorine Substances 0.000 claims description 6
- 229910052801 chlorine Inorganic materials 0.000 claims description 6
- 238000004659 sterilization and disinfection Methods 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 238000005273 aeration Methods 0.000 claims description 3
- 239000010802 sludge Substances 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 231100001240 inorganic pollutant Toxicity 0.000 abstract description 2
- 230000029087 digestion Effects 0.000 abstract 1
- 238000004134 energy conservation Methods 0.000 abstract 1
- 230000014759 maintenance of location Effects 0.000 abstract 1
- 230000000087 stabilizing effect Effects 0.000 abstract 1
- 241001074903 Methanobacteria Species 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
Landscapes
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention provides a treatment method of hydrolytic acidification aerobic active sewage, which is widely applied to decentralized treatment of domestic sewage, the combination of anaerobic and aerobic biological treatment technologies can effectively remove most organic and inorganic pollutants, the advantages of energy conservation and high efficiency of the anaerobic technology are fully exerted, the removal rate of CODcr, BOD5 and SS by the system reaches more than 90%, the system has the function of stabilizing the effluent quality, the methanation capacity of organic matters in an anaerobic reactor is improved, the gas production rate is increased, the residual sludge amount is reduced, a sludge concentration tank and a digestion tank can be reduced or even saved, methanogens are difficult to propagate in the reactor by using the elutriation effect of water flow in the reactor, the anaerobic treatment is controlled in a hydrolysis-acidification stage, the anaerobic retention time is shortened to 2-3 h, the speed of treating the domestic sewage is improved, and the cost is reduced.
Description
Technical field
The present invention relates to a kind of treatment process of sanitary sewage, especially the treatment process of the aerobic activated sewage of acidication.
Background technology
Municipal effluent is after anaerobic treatment, under existing technical conditions, reach the secondary effluent standard, need the quite long residence time, anaerobic treatment only provides a kind of pre-treatment, need aftertreatment could satisfy new sewage drainage standard, because nitrogen and not removal of phosphorus after the anaerobic treatment further handled necessary to the anaerobism water outlet.
Summary of the invention
The treatment process that the purpose of this invention is to provide the aerobic activated sewage of a kind of high efficiency acidication.
For realizing that technical scheme provided by the present invention is:
The treatment process of the aerobic activated sewage of a kind of acidication, it is characterized in that the water outlet aftertreatment employing facultative oxidation pool after anaerobic treatment, in the anoxybiosis sewage treatment project, add the aftertreatment of 60ppm aluminum chloride, introduce again and flood the filter tank and feed disinfection by chlorine simultaneously, enter the purifying domestic sewage device system of denitrogenation dephosphorizing function.
Present method is widely used in the dispersion treatment sanitary sewage, most of organic and inorganic pollutant can be effectively removed in the combination of anaerobic and aerobic biologic treating technique, given full play to the anaerobism technical energy saving, the advantage of aerobic technique to high-efficiency, system is to CODcr, BOD5 and SS clearance reach more than 90%, and the effect of stable effluent quality is arranged, organism methanation ability improves in the anaerobic reactor, gas production rate is increased, surplus sludge volume reduces, can reduce even save sludge thickener and digester, in reactor, utilize water mobile elutriation effect to cause methanobacteria in reactor, to be difficult to breeding, anaerobic treatment is controlled at hydrolysis-souring stage, make the anaerobism residence time shorten to 2-3h, thereby improve the speed of handling sanitary sewage, reduced production cost.
Embodiment
In the actual treatment, the facultative oxidation pool is adopted in water outlet aftertreatment after anaerobic treatment, in the anoxybiosis sewage treatment project, adds the aftertreatment of 60ppm aluminum chloride, introduce again and flood the filter tank and feed disinfection by chlorine simultaneously, enter the purifying domestic sewage device system of denitrogenation dephosphorizing function.
Treatment process of the present invention is following steps:
Water outlet after anaerobic treatment is introduced oxidation pond in aftertreatment, adding 60ppm aluminum chloride handles, introduce again and flood the filter tank and feed disinfection by chlorine simultaneously, enter the purifying domestic sewage device system of denitrogenation dephosphorizing function again, because anaerobic-aerobic combination, be subjected to Temperature Influence bigger, particularly under cold condition, the performance of system can not be fully played, so suitably control the sewage disposal temperature, generally effect is better under 20 ℃ of aeration temperature, nitrogen removal performance when biological filter combination process low temperature is down handled sanitary sewage is respectively 15h and 4h at the hydraulic detention time of anaerobism section and aerobic section, even envrionment temperature is lower than 10 ℃ (5.9 ℃ of temperature on average), to CODcr, the clearance of BOD5 and SS still reaches about 80%, low temperature makes nitrated activity be subjected to certain influence, and temperature is in 4.5-23 ℃ of scope, and the clearance of TKN changes between 46.4-87.3%, and system has certain denitrification function, can carry out denitrogenation processing to sanitary sewage under low temperature environment.
Below in conjunction with embodiment content of the present invention is described further:
Embodiment one
Equipment: oxidation pond, biological filter;
Treatment process:
Water outlet after anaerobic treatment is introduced oxidation pond in aftertreatment, adding 60ppm aluminum chloride handles, introduce again and flood the filter tank and feed disinfection by chlorine simultaneously, enter the purifying domestic sewage device system of denitrogenation dephosphorizing function again, because anaerobic-aerobic combination, be subjected to Temperature Influence bigger, particularly under cold condition, the performance of system can not be fully played, so suitably control the sewage disposal temperature, generally effect is better under 20 ℃ of aeration temperature, nitrogen removal performance when biological filter combination process low temperature is down handled sanitary sewage is respectively 15h and 4h at the hydraulic detention time of anaerobism section and aerobic section, even envrionment temperature is lower than 10 ℃ (5.9 ℃ of temperature on average), to CODcr, the clearance of BOD5 and SS still reaches about 80%, low temperature makes nitrated activity be subjected to certain influence, and temperature is in 4.5-23 ℃ of scope, and the clearance of TKN changes between 46.4-87.3%, and system has certain denitrification function, can carry out denitrogenation processing to sanitary sewage under low temperature environment;
Embodiment two
Equipment: the facultative oxidation pool, biological filter, its treatment process is with embodiment one.
In sum, the treatment process of the aerobic activated sewage of acidication of the present invention, input cost is low, and system has certain denitrification function, can under low temperature environment, carry out denitrogenation processing, but the sewage secondary recovery utilization after the processing there are better economic and social benefit to sanitary sewage.
Claims (2)
1. the treatment process of the aerobic activated sewage of acidication, it is characterized in that: the facultative oxidation pool is adopted in the water outlet aftertreatment after anaerobic treatment, in the anoxybiosis sewage treatment project, add the aftertreatment of 60ppm aluminum chloride, introduce again and flood the filter tank and feed disinfection by chlorine simultaneously, enter the purifying domestic sewage device system of denitrogenation dephosphorizing function.
2. according to claim 1, it is characterized in that treatment process is following steps: the water outlet after anaerobic treatment is introduced oxidation pond in aftertreatment, adding 60ppm aluminum chloride handles, introduce again and flood the filter tank and feed disinfection by chlorine simultaneously, enter the purifying domestic sewage device system of denitrogenation dephosphorizing function again, because anaerobic-aerobic combination, be subjected to Temperature Influence bigger, particularly under cold condition, the performance of system can not be fully played, so suitably control the sewage disposal temperature, generally effect is better under 20 ℃ of aeration temperature, nitrogen removal performance when biological filter combination process low temperature is handled sanitary sewage down, hydraulic detention time at anaerobism section and aerobic section is respectively 15h and 4h, even envrionment temperature is lower than 10 ℃ (5.9 ℃ of temperature on average), to CODcr, the clearance of BOD5 and SS still reaches about 80%, low temperature makes nitrated activity be subjected to certain influence, temperature is in 4.5-23 ℃ of scope, the clearance of TKN changes between 46.4-87.3%, and system has certain denitrification function, can carry out denitrogenation processing to sanitary sewage under low temperature environment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101567372A CN101186411A (en) | 2007-11-28 | 2007-11-28 | Method for treating hydrolytic acidification aerobic active sewage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101567372A CN101186411A (en) | 2007-11-28 | 2007-11-28 | Method for treating hydrolytic acidification aerobic active sewage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101186411A true CN101186411A (en) | 2008-05-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101567372A Pending CN101186411A (en) | 2007-11-28 | 2007-11-28 | Method for treating hydrolytic acidification aerobic active sewage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101186411A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102874975A (en) * | 2012-05-10 | 2013-01-16 | 江南大学 | High-efficiency treatment system for sanitary sewage |
| CN104003571A (en) * | 2013-02-27 | 2014-08-27 | 宁波市恒洁水务发展有限公司 | Biological nitrogen removal system and process thereof |
-
2007
- 2007-11-28 CN CNA2007101567372A patent/CN101186411A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102874975A (en) * | 2012-05-10 | 2013-01-16 | 江南大学 | High-efficiency treatment system for sanitary sewage |
| CN104003571A (en) * | 2013-02-27 | 2014-08-27 | 宁波市恒洁水务发展有限公司 | Biological nitrogen removal system and process thereof |
| CN104003571B (en) * | 2013-02-27 | 2016-04-06 | 宁波市恒洁水务发展有限公司 | The technique of biological denitrification system |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Open date: 20080528 |