CN108947197A - A kind of processing method of sludge dewatering - Google Patents
A kind of processing method of sludge dewatering Download PDFInfo
- Publication number
- CN108947197A CN108947197A CN201710383434.8A CN201710383434A CN108947197A CN 108947197 A CN108947197 A CN 108947197A CN 201710383434 A CN201710383434 A CN 201710383434A CN 108947197 A CN108947197 A CN 108947197A
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- Prior art keywords
- sludge
- pumped
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Classifications
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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
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
-
- 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
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Treatment Of Sludge (AREA)
Abstract
A kind of processing method of sludge dewatering is disclosed in the present invention, this method first separates oil, the water in oily sludge using dehydration agent, and while oily in separated sludge, the water in sludge is separated；Sludge internal junction Heshui is then isolated using sludge conditioner and equipment of Hydrodynamic Cavitation, finally sludge is carried out dehydrating using belt filter press；This method process layout is reasonable, and the equipment that each process procedure uses is simple, can be widely applied to the dehydration of oily sludge.
Description
Technical field
The present invention relates to technical field of sludge treatment, in particular to a kind of processing method of sludge dewatering.
Background technique
In recent years, as the growth of urban population, municipal services facility constantly improve, China annual sewage treatment total amount
It is continuously increased, sludge yield is also increasing.Currently, China runs more than 4000 of sewage treatment plant, processing sewage up to 1.5 ×
108m3/ d, nearly 35,000,000 tons of excess sludge (moisture content 80%) annual output.National environmental protection portion ring is done [2010] No. 157 and " is closed
In the notice for reinforcing urban sewage treatment plant sludge prevention and cure of pollution work " " sewage treatment plant (is not handled with storing for requirement
Set) for the purpose of sludge transported into factory circle, it is necessary to by sludge dewatering to 50% or less moisture content." thus deeply dehydrating sludge at
The hot spot paid close attention to and studied for people.Generating during oil exploitation, transport, refining and oily waste water treatment can generate greatly
Amount contains sludge, these sludge typically contain a large amount of mineral oil, sulfide and heavy metal etc., and with foul smelling, pole
It is toxic；If without processing direct emission biggish pollution will be caused to soil, water body and plant in nature.
Summary of the invention
The purpose of the present invention is to provide a kind of processing method of sludge dewatering, it can be used for the dehydration to oily sludge,
Improve the dehydrating effect of sludge.
In order to solve the above technical problems, present invention employs a kind of processing method of sludge dewatering, comprising the following steps:
1) sludge obtained after settlement treatment is pumped into processing pond, sludge treating agent is added in processing pond, it will be dirty
Oil and water in mud are separated from sludge；
2) it is recycled You Heshui separate from sludge in pond, positioned at top layer, sulphur is added into processing pond
Acid or hydrochloric acid, using the pH value of mud mixture in blender stirring and adjusting processing pond to 3.0-6.0；
3) sludge in reaction tank is pumped into reactor tank, sludge conditioner is poured into reactor tank, make sludge conditioner
It is sufficiently reacted with sludge；
4) sludge in reactor tank is pumped into equipment of Hydrodynamic Cavitation and is handled；
5) by treated, sludge is pumped into neutralization pond, and lye is added in neutralization pond, the pH value of sludge is adjusted to 6.0-
8.0；
6) sludge is carried out processing is sufficiently stirred using blender, isolates the Interstitial Water in sludge, sludge is pumped into band
It is carried out dehydrating in formula filter press.
In above-mentioned technical proposal, it is preferable that the preparation method of the sludge treating agent are as follows: will 5-15 by weight parts of oxygen
Change aluminium, 5-15 parts of silica, 5-10 parts of magnesia, 20-80 parts of iron oxide is uniformly mixed, and said mixture is added
To polyacrylic acid, Sodium Polyacrylate aqueous solution in, stir evenly.
In above-mentioned technical proposal, it is preferable that the preparation method of the sludge conditioner are as follows: by ferrous sulfate, frerrous chloride,
Ferrous carbonate is added in hydrogen peroxide, be thoroughly mixed uniformly, wherein preferably sulfuric acid ferrous iron, frerrous chloride, ferrous carbonate and
The weight ratio of hydrogen peroxide is 1:100-100:1.
In above-mentioned technical proposal, it is preferable that gravity concentration device is arranged in the belt filter press front end, and sludge is first pumped into
After carrying out gravity dehydration processing on gravity concentration device, it is re-fed into belt filter press and is carried out dehydrating.
The present invention first separates oil, the water in oily sludge using dehydration agent, oily same in separated sludge
When, the water in sludge is separated；Sludge internal junction Heshui is then isolated using sludge conditioner and equipment of Hydrodynamic Cavitation,
Finally sludge is carried out dehydrating using belt filter press；This method process layout is reasonable, the equipment that each process procedure uses
Simply, it can be widely applied to the dehydration of oily sludge.
Specific embodiment
The present invention is further illustrated combined with specific embodiments below.
Embodiment 1
1) sludge obtained after settlement treatment is pumped into processing pond, sludge treating agent is added in processing pond, it will be dirty
Oil and water in mud are separated from sludge；Sludge treating agent are as follows: will 15 parts of aluminium oxide by weight, 15 parts of silica,
10 parts of magnesia, 60 parts of iron oxide are uniformly mixed, said mixture are added in polyacrylic acid aqueous solution, and stirring is equal
It is even；Wherein the additional amount of sludge treating agent is the 10% of sludge weight；
2) it is recycled You Heshui separate from sludge in pond, positioned at top layer, sulphur is added into processing pond
Acid or hydrochloric acid, using the pH value of mud mixture in blender stirring and adjusting processing pond to 3.0；
3) sludge in reaction tank is pumped into reactor tank, sludge conditioner is poured into reactor tank, make sludge conditioner
It is sufficiently reacted with sludge；Sludge conditioner are as follows: by etc. the ferrous sulfate of weight be added in hydrogen peroxide, be thoroughly mixed
It is even；Wherein the additional amount of sludge conditioner is the 0.1% of sludge weight；
4) sludge in reactor tank is pumped into equipment of Hydrodynamic Cavitation and is handled；
5) by treated, sludge is pumped into neutralization pond, and lye is added in neutralization pond, the pH value of sludge is adjusted to 6.0；
6) sludge is carried out processing is sufficiently stirred using blender, isolates the Interstitial Water in sludge, sludge is pumped into band
It is carried out dehydrating in formula filter press.
In step 6) when being carried out dehydrating, sludge is first pumped into progress gravity dehydration processing on gravity concentration device
Afterwards, it is re-fed into belt filter press and is carried out dehydrating.
To through filter-press dehydration, treated that moisture percentage in sewage sludge detects, sludge moisture content is 40.8% in the present embodiment.
Embodiment 2
1) sludge obtained after settlement treatment is pumped into processing pond, sludge treating agent is added in processing pond, it will be dirty
Oil and water in mud are separated from sludge；Sludge treating agent are as follows: will 10 parts of aluminium oxide by weight, 10 parts of silica,
10 parts of magnesia, 70 parts of iron oxide are uniformly mixed, said mixture are added in polyacrylic acid aqueous solution, and stirring is equal
It is even；Wherein the additional amount of sludge treating agent is the 15% of sludge weight；
2) it is recycled You Heshui separate from sludge in pond, positioned at top layer, sulphur is added into processing pond
Acid or hydrochloric acid, using the pH value of mud mixture in blender stirring and adjusting processing pond to 5.0；
3) sludge in reaction tank is pumped into reactor tank, sludge conditioner is poured into reactor tank, make sludge conditioner
It is sufficiently reacted with sludge；Sludge conditioner are as follows: by etc. the ferrous sulfate of weight be added in hydrogen peroxide, be thoroughly mixed
It is even；Wherein the additional amount of sludge conditioner is the 1.0% of sludge weight；
4) sludge in reactor tank is pumped into equipment of Hydrodynamic Cavitation and is handled；
5) by treated, sludge is pumped into neutralization pond, and lye is added in neutralization pond, the pH value of sludge is adjusted to 7.0；
6) sludge is carried out processing is sufficiently stirred using blender, isolates the Interstitial Water in sludge, sludge is pumped into band
It is carried out dehydrating in formula filter press.
In step 6) when being carried out dehydrating, sludge is first pumped into progress gravity dehydration processing on gravity concentration device
Afterwards, it is re-fed into belt filter press and is carried out dehydrating.
To through filter-press dehydration, treated that moisture percentage in sewage sludge detects, sludge moisture content is 37.5% in the present embodiment.
Specification of the invention be considered as it is illustrative and not restrictive, on the basis of the present invention, art technology
For personnel according to disclosed technology contents, some replace can be made to some of technical characteristics by not needing creative labor
It changes and deforms, be within the scope of the invention.
Claims (4)
1. a kind of processing method of sludge dewatering, which comprises the following steps:
1) sludge obtained after settlement treatment is pumped into processing pond, sludge treating agent is added in processing pond, it will be in sludge
Oil and water separated from sludge；
2) be recycled separate from sludge in pond, You Heshui positioned at top layer, be added into processing pond sulfuric acid or
Hydrochloric acid, using the pH value of mud mixture in blender stirring and adjusting processing pond to 3.0-6.0；
3) sludge in reaction tank is pumped into reactor tank, sludge conditioner is poured into reactor tank, make sludge conditioner and dirt
Mud sufficiently reacts；
4) sludge in reactor tank is pumped into equipment of Hydrodynamic Cavitation and is handled；
5) by treated, sludge is pumped into neutralization pond, and lye is added in neutralization pond, the pH value of sludge is adjusted to 6.0-8.0；
6) sludge is carried out processing is sufficiently stirred using blender, isolates the Interstitial Water in sludge, sludge is pumped into belt pressure
It is carried out dehydrating in filter.
2. processing method of sludge dewatering according to claim 1, it is characterised in that: the preparation method of the sludge treating agent
Are as follows: will 5-15 by weight parts of aluminium oxide, 5-15 parts of silica, 5-10 parts of magnesia, 20-80 parts of iron oxide is mixed
It closes uniformly, said mixture is added in the aqueous solution of polyacrylic acid, Sodium Polyacrylate, is stirred evenly.
3. processing method of sludge dewatering according to claim 1, it is characterised in that: the preparation method of the sludge conditioner
Are as follows: ferrous sulfate, frerrous chloride, ferrous carbonate are added in hydrogen peroxide, are thoroughly mixed uniformly, wherein preferably sulfuric acid is sub-
Iron, frerrous chloride, ferrous carbonate and hydrogen peroxide weight ratio be 1:100-100:1.
4. processing method of sludge dewatering according to claim 1, it is characterised in that: the belt filter press front end setting weight
Power enrichment facility, sludge is first pumped on gravity concentration device carry out gravity dehydration processing after, be re-fed into belt filter press into
Row dehydration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710383434.8A CN108947197A (en) | 2017-05-26 | 2017-05-26 | A kind of processing method of sludge dewatering |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710383434.8A CN108947197A (en) | 2017-05-26 | 2017-05-26 | A kind of processing method of sludge dewatering |
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| Publication Number | Publication Date |
|---|---|
| CN108947197A true CN108947197A (en) | 2018-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710383434.8A Withdrawn CN108947197A (en) | 2017-05-26 | 2017-05-26 | A kind of processing method of sludge dewatering |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110482787A (en) * | 2019-08-15 | 2019-11-22 | 上海应用技术大学 | A kind of wastewater biochemical system for handling excess sludge reduction system and method |
| CN111718105A (en) * | 2020-07-16 | 2020-09-29 | 兰州理工大学 | Treatment device and method for degrading oily sludge based on combination of ozone oxidation and hydrogen peroxide |
| CN113024060A (en) * | 2021-04-20 | 2021-06-25 | 辽宁大学 | Sludge treatment system based on hydrodynamic cavitation |
-
2017
- 2017-05-26 CN CN201710383434.8A patent/CN108947197A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110482787A (en) * | 2019-08-15 | 2019-11-22 | 上海应用技术大学 | A kind of wastewater biochemical system for handling excess sludge reduction system and method |
| CN111718105A (en) * | 2020-07-16 | 2020-09-29 | 兰州理工大学 | Treatment device and method for degrading oily sludge based on combination of ozone oxidation and hydrogen peroxide |
| CN111718105B (en) * | 2020-07-16 | 2023-12-12 | 兰州理工大学 | Treatment device and method for degrading oily sludge based on ozone oxidation and hydrogen peroxide |
| CN113024060A (en) * | 2021-04-20 | 2021-06-25 | 辽宁大学 | Sludge treatment system based on hydrodynamic cavitation |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20181207 |
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| WW01 | Invention patent application withdrawn after publication |