CN104355510A - Sludge treatment system - Google Patents
Sludge treatment system Download PDFInfo
- Publication number
- CN104355510A CN104355510A CN201410570194.9A CN201410570194A CN104355510A CN 104355510 A CN104355510 A CN 104355510A CN 201410570194 A CN201410570194 A CN 201410570194A CN 104355510 A CN104355510 A CN 104355510A
- Authority
- CN
- China
- Prior art keywords
- sludge
- treatment
- outlet
- solid residue
- tail gas
- 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
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/06—Treatment of sludge; Devices therefor by oxidation
- C02F11/08—Wet air oxidation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/06—Sludge reduction, e.g. by lysis
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention relates to a sludge treatment system, belongs to the field of treatment of a sewage plant, and particularly relates to the field of treatment of sludge of a sewage treatment product. To solve the problems that the sludge treatment affects the human health and pollutes the environment, the invention provides the clean sludge treatment system. The system comprises a sludge concentration device, a sludge digestion tank, a wet oxidation reactor, and a settling pond which are sequentially connected, wherein the settling pond comprises a liquid outlet and a solid residue outlet, the solid residue outlet is communicated with a filter press, an air source inlet and a tail gas outlet are formed in a mixing reactor, the tail gas outlet is communicated with a tail gas treatment device, and a heat recovery device is arranged in a feeding and discharging opening of the mixing reactor. By using the sludge treatment system, the sludge is discharged non-hazardously, the treatment efficiency is high, the treatment is thorough, the effluent is easily biochemically degraded, the amount of the sludge is reduced to the maximum extent, all products produced in the whole treatment process are effectively treated, and the environment is not polluted.
Description
Technical field
The invention belongs to Sewage Plant process field, particularly relate to sewage disposal product field of sludge treatment.
Background technology
In recent years, along with the increasingly stringent of water quality emission standard, and the service population of sewage network constantly increases, and sludge yield constantly increases, and brings very large pressure to environment, and the process method of disposal of at present conventional mud is main: agricultural, burn, landfill.
Along with the increase for the treatment of capacity, its drawback just obviously spills cruelly, the easy polluted underground water of such as landfill and dissipation stink, agriculturally easily causes objectionable impurities to accumulate to affect human health, and burning easily causes smoke pollution etc.
Summary of the invention
The object of this invention is to provide a kind of sludge treating system of environmental sound.
The present invention is achieved by the following technical programs: a kind of sludge treating system, comprise the sludge concentration device, sludge digestion tank, wet oxidation reaction device and the settling tank that are connected successively, described settling tank comprises liquid exit and solid residue outlet, described solid residue outlet pressure filter, described mixing reactor is provided with air source inlet and offgas outlet, described offgas outlet is communicated with exhaust gas processing device, and described mixing reactor gangway is provided with heat reclaim unit.
In described wet oxidation reaction device, reaction conditions is 250 ~ 300 DEG C, 4.5 ~ 7MPa, and the reaction times is 15 ~ 120 minutes.
Described wet oxidation reaction device is sequence batch reaction.
Described sludge concentration device is whizzer.
The present invention has following beneficial effect:
Adopt oxidizing reaction to process, be swift in response, oxygenolysis is comparatively complete, and water outlet is easy to biochemical degradation, and mud decrement reaches maximization, and the product that whole treating processes produces all is effectively handled, environmentally safe.
Embodiment
The present invention is described further by the following examples.
Specific embodiment: the excess sludge produced after the unit for treating water process of Sewage Plant, concentrate through whizzer, digest in sludge digestion tank, the biogas generated can be recycled, mud enters in wet oxidation reaction device subsequently, pass into pure oxygen or air as oxygenant, heating flame carries out oxidizing reaction, the reaction times is confirmed according to the sludge quantity entered, , mud raw material is broken down into three parts: solid residue, be easy to the tail gas that the waste water of biochemical degradation and main component are carbonic acid gas and nitrogen, after reaction, waste gas is discharged after exhaust gas processing device process by offgas outlet, reaction product enters precipitation process in settling tank, waste water is sent to unit for treating water by liquid exit and carries out biochemical treatment, solid residue enters pressure filter by solid residue outlet and carries out processed, recycle as resource utilization.Mixing reactor gangway is provided with heat reclaim unit simultaneously, and mud before reacting by heating also cools the rear waste water of reaction and solid residue mixture, is repeated by the heat of reactor internal consumption to recycle, and the temperature maintained needed in reactor and pressure.
COD clearance large more than 80% in waste water after testing after process, total content of organic carbon in solid residue is less than 5% and suspended solids content reduces more than 75%, in solid residue after process, heavy metals immobilization degree is high, and the rear press filtration of dehydration can be used as building and paves the way or ceramic raw material.
Sludge treating system described in the embodiment of the present invention, its treatment time is short, the solid residue salinity of output is high, organic oxidation decomposes comparatively complete, and water outlet is easy to biochemical degradation, and mud decrement reaches maximization, whole treating processes is clean, by product is all recovered process, environmentally safe, and the solid residue in by product can be recycled by resource utilization.
above content is the further description done the present invention in conjunction with concrete embodiment, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, some simple deduction or replace can also be made, all should be considered as belonging to protection scope of the present invention.
Claims (4)
1. a sludge treating system, it is characterized in that: comprise the sludge concentration device, sludge digestion tank, wet oxidation reaction device and the settling tank that are connected successively, described settling tank comprises liquid exit and solid residue outlet, described solid residue outlet pressure filter, described mixing reactor is provided with air source inlet and offgas outlet, described offgas outlet is communicated with exhaust gas processing device, and described mixing reactor gangway is provided with heat reclaim unit.
2. sludge treating system as claimed in claim 1, is characterized in that: in described wet oxidation reaction device, reaction conditions is 250 ~ 300 DEG C, 4.5 ~ 7MPa, reaction times is 15 ~ 120 minutes.
3. sludge treating system as claimed in claim 1, is characterized in that: described wet oxidation reaction device is sequence batch reaction.
4. sludge treating system as claimed in claim 1, is characterized in that: described sludge concentration device is whizzer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410570194.9A CN104355510A (en) | 2014-10-23 | 2014-10-23 | Sludge treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410570194.9A CN104355510A (en) | 2014-10-23 | 2014-10-23 | Sludge treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104355510A true CN104355510A (en) | 2015-02-18 |
Family
ID=52522851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410570194.9A Pending CN104355510A (en) | 2014-10-23 | 2014-10-23 | Sludge treatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104355510A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105776794A (en) * | 2016-03-22 | 2016-07-20 | 上海环谷投资管理有限公司 | Method for catalytic wet oxidation of industrial sludge |
| CN107021598A (en) * | 2017-05-26 | 2017-08-08 | 榆林学院 | A kind of paper mill sludge resource utilization device |
-
2014
- 2014-10-23 CN CN201410570194.9A patent/CN104355510A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105776794A (en) * | 2016-03-22 | 2016-07-20 | 上海环谷投资管理有限公司 | Method for catalytic wet oxidation of industrial sludge |
| CN107021598A (en) * | 2017-05-26 | 2017-08-08 | 榆林学院 | A kind of paper mill sludge resource utilization device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150218 |