CN86106883A - Hydrolyzing-oxybiotic treatment of nunicipal drainage - Google Patents
Hydrolyzing-oxybiotic treatment of nunicipal drainage Download PDFInfo
- Publication number
- CN86106883A CN86106883A CN86106883.1A CN86106883A CN86106883A CN 86106883 A CN86106883 A CN 86106883A CN 86106883 A CN86106883 A CN 86106883A CN 86106883 A CN86106883 A CN 86106883A
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- China
- Prior art keywords
- hydrolysis reactor
- sludge
- mud
- sewage
- tank
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- 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.)
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- Activated Sludge Processes (AREA)
- Biological Treatment Of Waste Water (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention discloses a kind of new urban sewage treatment process, be adapted at municipal wastewater treatment plant and apply, this technology is made up of settling pit, hydraulic screen, hydrolysis reactor, aeration tank, settling tank and sludge thickener etc.Mud also obtains handling and sludge quantity greatly being reduced when disposing of sewage.The realization sewage sludge is handled simultaneously.This technology can be saved initial cost, power consumption and day-to-day operation expense.
Description
The present invention relates to a kind of novel process of municipal sewage treatment.The method of existing municipal sewage treatment generally adopts the technical process of second-stage treatment, promptly removes suspended substance through precipitation process earlier, relies on the organism in the aerobic bacteria decomposition municipal effluent then, reaches the purpose of purification.The mud that treating processes is discharged carries out anaerobically fermenting with digester and handles, and this flow process exists following problem: the initial cost that at first is treatment facility is big; Next is a treating processes energy consumption height, has caused the operational and administrative expenses height, has influenced extensively carrying out of municipal sewage treatment.
Task of the present invention provides that a kind of initial cost is few, energy consumption is low, working cost is few, the simple treatment process of operational administrative.
Task of the present invention is to implement like this, has replaced the single-minded traditional preliminary sedimentation tank of function with multifunctional hydrolyzed reactor, uses the reaction of hydrolysis and acid-producing bacteria, and insoluble hydrolysis of organic matter is become dissolved organic matter; Macromolecular substance resolves into small-molecule substance, has improved the biodegradability of sewage greatly, because the generation of hydrolysis and partial acidification effect makes that sewage sludge obtains handling simultaneously, can cancel sludge digestion tank.
Fig. 1 is a municipal effluent hydrolysis-aerobic biological treatment process schematic flow sheet.
Below in conjunction with accompanying drawing 1, technical process of the present invention is described in further detail:
Former municipal effluent enters settling pit (1) by pump, residence time 3-5 minute, oarse-grained sand grains is removed, pass through hydraulic screen (2) then, 3 millimeters of the kerf spacings of hydraulic screen, the large particulate matter that removal is swum, sewage enter hydrolysis reactor (3), and hydrolysis reactor adopts specially designed, any packing material is not installed in the reactor, do not establish agitator and triphase separator, in reactor (3) after the short period of time stops, BOD
5(BOD5) clearance can reach 30～40%; The COD(chemical oxygen demand (COD)) clearance reaches 40～60%; The SS(suspended substance) clearance can reach 80～90%, the percent hydrolysis of mud in reactor is 36～65%, water outlet after hydrolysis reactor is handled enters aeration tank (4), head end need add and account for the pond and hold filler about 20% volume, to obtain the active sludge of good sedimentation function.Sewage shortened than traditional technology greatly in the aeration tank residence time, and gas-water ratio reduces significantly, and the water after handle the aeration tank enters settling tank (5), settling tank water outlet BOD
5＜20 mg/litre, COD＜100 mg/litre, SS＜20 mg/litre.The water outlet of settling tank (5) can be discharged.The mud that is settled out at settling tank (5) passes back into aeration tank (4) by sludge pump by pipeline, excess sludge is sent into hydrolysis reactor (3), and the excess sludge of whole flow process is discharged from hydrolysis reactor, and sludge quantity greatly reduces, and stable in properties, do not need digestion process.Mud enters concentration basin (6), directly dehydration after concentrating in 12～24 hours.
Claims (4)
1, a kind ofly formed urban sewage treatment process by settling pit [1], hydraulic screen [2], hydrolysis reactor [3], aeration tank [4] and settling tank [5], it is characterized in that the hydrolysis reactor is gone in series connection in whole stream kind, and in hydrolysis reactor, sewage sludge is handled simultaneously.
2, by claim 1 predetermined process technology, it is characterized in that in the hydrolysis reactor, any packing material is not installed, do not establish agitator and triphase separator.
3, by claim 1 or 2 predetermined process technologies, it is characterized in that the mud in the settling tank (5) is sent into aeration tank or hydrolysis reactor (3) respectively.
4, want 3 predetermined process technologies by right, it is characterized in that the mud of whole flow process is discharged by hydrolysis reactor (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86106883 CN1015888B (en) | 1986-10-13 | 1986-10-13 | Hydrolysis-aerobic biological treatment process for urban sewage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86106883 CN1015888B (en) | 1986-10-13 | 1986-10-13 | Hydrolysis-aerobic biological treatment process for urban sewage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN86106883A true CN86106883A (en) | 1988-04-27 |
| CN1015888B CN1015888B (en) | 1992-03-18 |
Family
ID=4803402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 86106883 Expired CN1015888B (en) | 1986-10-13 | 1986-10-13 | Hydrolysis-aerobic biological treatment process for urban sewage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1015888B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100418903C (en) * | 2004-08-07 | 2008-09-17 | 安徽建筑工业学院 | Tech. for treating urban sewage by complete mixed hydrolytic acidify |
-
1986
- 1986-10-13 CN CN 86106883 patent/CN1015888B/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100418903C (en) * | 2004-08-07 | 2008-09-17 | 安徽建筑工业学院 | Tech. for treating urban sewage by complete mixed hydrolytic acidify |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1015888B (en) | 1992-03-18 |
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Legal Events
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C13 | Decision | ||
| C14 | Grant of patent or utility model | ||
| C19 | Lapse of patent right due to non-payment of the annual fee |