CN110143723A - A kind of sewage water treatment method - Google Patents
A kind of sewage water treatment method Download PDFInfo
- Publication number
- CN110143723A CN110143723A CN201910442308.4A CN201910442308A CN110143723A CN 110143723 A CN110143723 A CN 110143723A CN 201910442308 A CN201910442308 A CN 201910442308A CN 110143723 A CN110143723 A CN 110143723A
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- CN
- China
- Prior art keywords
- sewage
- liquid
- pac
- pam
- water treatment
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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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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
- 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
- C02F11/125—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using screw filters
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/24—Treatment of water, waste water, or sewage by flotation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention discloses a kind of sewage water treatment methods, including multiple steps, replace H2so4, more environmentally friendly and PAC that can preferably be settled as flocculation aid wherein using PAC, enhance effect of settling；After the present invention is using folded spiral shell machine, COD directly can be reduced to 300 horizontal lines, laid the foundation for following process；It is settled using high molecular weight PAM, the PAM molecular weight of use is traditional ten times or more, it is easier to greasy filth is condensed into, and is easier to agglomerate after being compressed, reduces the amount of moisture taken away, it is covert to reduce solid waste expenditure；The COD of sewage can be made to directly reach 100 or less by the way of of the invention.
Description
Technical field
The present invention relates to environmental protection technical field more particularly to a kind of sewage water treatment methods.
Background technique
Sewage treatment: the mistake that a certain water body or the water quality requirement reused purify it is discharged into reach sewage
Journey.It is each that sewage treatment is widely used in building, agricultural, traffic, the energy, petrochemical industry, environmental protection, urban landscape, medical treatment, food and drink etc.
The daily life of common people is also come into field more and more.
Demulsification refers to that emulsion destroys completely, becomes not miscible two-phase.Demulsification is exactly substantially that eliminate emulsion steady
Surely change the process of condition, the drop aggregation for making dispersion, layering.In many production processes, generally require stable emulsion
It destroys, that is, is demulsified, if crude oil is dehydrated, needs to destroy these emulsion from the devil liquor recovery wool grease for washing wool, chemically reacted
Dehydration etc. after being emulsified when being washed in journey.
Traditional demulsification uses H2SO4 or HCl and NaOH, due to involving the use of this dangerous material of H2SO4, to work
The storage of factory, takes, and the level of skill of personnel has requirements at the higher level, and has no small security risk.
It is easy to cause a large amount of reproducibility group and little particle to be brought into biochemistry pool under the prior art, causes bacteria dead
It dies, so that biochemical treatment link is failed, be unable to reach clean-up effect.
Summary of the invention
The present invention aiming at the shortcomings in the prior art, provides a kind of sewage water treatment method, and clean-up effect is excellent, Neng Gouzhi
Access COD100 hereinafter, and security risk it is few, the level of skill of operator is required lower.
In order to solve the above-mentioned technical problem, the present invention is addressed by following technical proposals: a kind of sewage water treatment method,
Sewage is imported oil separator by step A, and after standing, oil can float on the surface, and import cesspool from bottom by sewage, and oil is fished out
Out；
Step B injects sewage in cesspool, reinjects the clear water of same volume；
Step C is added NaOH to cesspool and manufactures alkaline environment, and is demulsified to emulsion, used in amounts according to waste water at that time
PH value is matched, and final pH value control is stirred liquid 8 ~ 9.5, and ceaselessly, guarantees reaction；
PAM and water is added in step E in dispensing machine, and control PH is 4-6, and prevents from agglomerating；
Step C and step E is obtained solution and is added in reaction chamber together, reacts it sufficiently by step F, tentatively reduction COD, instead
Answer PH control in room in 7-8；
Step G, the object that step F is obtained import in folded spiral shell machine, carry out thickening, solids is discharged, is uniformly processed；
Step H, the liquid that step G is obtained import flotation tank, add NaOH and PAC, allow not complete in the sundries of back
The greasy filth removed entirely forms suspended matter, then forms a large amount of foams by air bearing, removed by scraper plate, flotation tank PH is controlled
5 ~ 7, and will；
Step I imports the liquid of step H in anaerobic pond, by anaerobic bacteria biodegrade water
Organic matter and reducing substances form water, and CO2, alcohols material, the residence time 8 ~ 10 hours, anaerobic pond PH was controlled in
Property acid on the weak side；
Step J imports the liquid of step I in aerobic tank, due to anaerobic pond processing will cause ammonia-nitrogen content rise through it is aerobic
Bacterium reduces ammonia-nitrogen content, and alcohols material is decomposed, and sodium salt raises 8 ~ 10 hours bacterium residence times aerobic tank PH control in neutrality
Acid on the weak side；
Step J treated liquid is imported in pond, is breeded fish in pond, to carry out water quality verifying by step K.
In step C, demulsification used is PAC namely aluminium polychloride.
In step C, PAC hydrolyzes to form 3 floc sedimentation of Al8 (OH) 204+, Al8 (OH) 10 (SO4) 54+ and Al (OH), makes glue
Body is de- steady, and assembles unstable colloid, forms the flock for being easier aggregation sedimentation.
In step F, mixed liquor carries out adsorption bridging sedimentation by the strand of PAM, and the polar group of PAM carries out absorption work
With, and the electrokinetic potential by influencing liquid finally settles alumen ustum and other bulky grain reducing substances.
Clean-up effect of the present invention is excellent, COD100 can be directly reached hereinafter, and security risk it is few, to operator's
Level of skill requires lower.
Detailed description of the invention
Fig. 1 is flow diagram of the present invention.
Specific embodiment
Present invention is further described in detail with specific embodiment with reference to the accompanying drawing: as shown in Figure 1,
A kind of sewage water treatment method,
Sewage is imported oil separator by step A, and after standing, oil can float on the surface, and import cesspool from bottom by sewage, and oil is fished out
Out；
Step B injects sewage in cesspool, reinjects the clear water of same volume；
Step C is added NaOH to cesspool and manufactures alkaline environment, and is demulsified to emulsion, used in amounts according to waste water at that time
PH value is matched, and final pH value control is stirred liquid 8 ~ 9.5, and ceaselessly, guarantees reaction；
PAM and water are added in dispensing machine, PAM is hydrolyzed by step E, and control PH is 4-6, and prevents from agglomerating；
Step C and step E is obtained solution and is added in reaction chamber together, reacts it sufficiently by step F, tentatively reduction COD, instead
Answer PH control in room in 7-8；
Step G, the object that step F is obtained import in folded spiral shell machine, carry out thickening, solids is discharged, is uniformly processed；
Step H, the liquid that step G is obtained import flotation tank, add NaOH and PAC, allow not complete in the sundries of back
The greasy filth removed entirely forms suspended matter, then forms a large amount of foams by air bearing, removed by scraper plate, flotation tank PH is controlled
5 ~ 7, and will；
Step I imports the liquid of step H in anaerobic pond, by anaerobic bacteria biodegrade water
Organic matter and reducing substances form water, and CO2, alcohols material, the residence time 8 ~ 10 hours, anaerobic pond PH was controlled in
Property acid on the weak side；
Step J imports the liquid of step I in aerobic tank, due to anaerobic pond processing will cause ammonia-nitrogen content rise through it is aerobic
Bacterium reduces ammonia-nitrogen content, and alcohols material is decomposed, and sodium salt raises 8 ~ 10 hours bacterium residence times aerobic tank PH control in neutrality
Acid on the weak side；
Step J treated liquid is imported in pond, is breeded fish in pond, to carry out water quality verifying by step K.
In step C, demulsification used is PAC namely aluminium polychloride.
In step C, PAC hydrolyzes to form 3 floc sedimentation of Al8 (OH) 204+, Al8 (OH) 10 (SO4) 54+ and Al (OH), makes glue
Body is de- steady, and assembles unstable colloid, forms the flock for being easier aggregation sedimentation.
In step F, mixed liquor carries out adsorption bridging sedimentation by the strand of PAM, and the polar group of PAM carries out absorption work
With, and the electrokinetic potential by influencing liquid finally settles alumen ustum and other bulky grain reducing substances.
This method is suitable for the exceeded sewage of all kinds of COD, the exceeded sewage of heavy metal ion.
Relevant comparative is carried out with traditional approach:
1. tradition demulsification uses H2SO4 or HCl and NaOH, due to involving the use of this dangerous material of H2SO4, to factory
Storage, takes, the level of skill of personnel has requirements at the higher level, and has no small security risk.This method is replaced using PAC
H2so4, more environmentally friendly and PAC can be settled preferably as flocculation aid, enhance effect of settling.
2. traditional mode has no folded spiral shell machine and carries out greasy filth compression, it be easy to cause a large amount of reproducibility group and little particle quilt
It is brought into biochemistry pool, causes bacteria dead, so that biochemical treatment link is failed, be unable to reach clean-up effect, after folded spiral shell machine,
COD directly can be reduced to 300 horizontal lines, laid the foundation for following process
3. settled using high molecular weight PAM, the PAM molecular weight of use is traditional ten times or more, it is easier to condense into oil
Mud, and be easier to agglomerate after being compressed, the amount of moisture taken away is reduced, it is covert to reduce solid waste expenditure.
4. the sewage using traditional approach processing COD 200,000, final result is average 4500 or so, and uses this set side
Formula can directly reach COD100 or less.
Protection scope of the present invention includes but is not limited to embodiment of above, and protection scope of the present invention is with claims
Subject to, replacement, deformation, the improvement that those skilled in the art that any pair of this technology is made is readily apparent that each fall within of the invention
Protection scope.
Clean-up effect of the present invention is excellent, COD100 can be directly reached hereinafter, and security risk it is few, to operator's
Level of skill requires lower.
Claims (4)
1. a kind of sewage water treatment method, it is characterised in that:
Sewage is imported oil separator by step A, and after standing, oil can float on the surface, and import cesspool from bottom by sewage, and oil is fished out
Out；
Step B injects sewage in cesspool, reinjects the clear water of same volume；
Step C is added NaOH to cesspool and manufactures alkaline environment, and is demulsified to emulsion, used in amounts according to waste water at that time
PH value is matched, and final pH value control is stirred liquid 8 ~ 9.5, and ceaselessly, guarantees reaction；
PAM and water is added in step E in dispensing machine, and control PH is 4-6, and prevents from agglomerating；
Step C and step E is obtained solution and is added in reaction chamber together, reacts it sufficiently by step F, tentatively reduction COD, instead
Answer PH control in room in 7-8；
Step G, the object that step F is obtained import in folded spiral shell machine, carry out thickening, solids is discharged, is uniformly processed；
Step H, the liquid that step G is obtained import flotation tank, add NaOH and PAC, allow not complete in the sundries of back
The greasy filth removed entirely forms suspended matter, then forms a large amount of foams by air bearing, removed by scraper plate, flotation tank PH is controlled
5 ~ 7, and will；
Step I imports the liquid of step H in anaerobic pond, by anaerobic bacteria biodegrade water
Organic matter and reducing substances form water, and CO2, alcohols material, the residence time 8 ~ 10 hours, anaerobic pond PH was controlled in
Property acid on the weak side；
Step J imports the liquid of step I in aerobic tank, due to anaerobic pond processing will cause ammonia-nitrogen content rise through it is aerobic
Bacterium reduces ammonia-nitrogen content, and alcohols material is decomposed, and sodium salt raises 8 ~ 10 hours bacterium residence times aerobic tank PH control in neutrality
Acid on the weak side；
Step J treated liquid is imported in pond, is breeded fish in pond, to carry out water quality verifying by step K.
2. a kind of sewage water treatment method according to claim 1, it is characterised in that: in step C, demulsification used is PAC,
That is aluminium polychloride.
3. a kind of sewage water treatment method according to claim 2, it is characterised in that: in step C, PAC hydrolyzes to form Al8
(OH) 3 floc sedimentation of 10 (SO4) 54+ of 204+, Al8 (OH) and Al (OH), makes elimination of colloid stability, and assemble unstable colloid,
Form the flock for being easier aggregation sedimentation.
4. a kind of sewage water treatment method according to claim 1, it is characterised in that: in step F, mixed liquor passes through PAM's
Strand carries out adsorption bridging sedimentation, and the polar group of PAM carries out suction-operated, and the electrokinetic potential by influencing liquid finally will
Alumen ustum is settled with other bulky grain reducing substances.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910442308.4A CN110143723A (en) | 2019-05-25 | 2019-05-25 | A kind of sewage water treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910442308.4A CN110143723A (en) | 2019-05-25 | 2019-05-25 | A kind of sewage water treatment method |
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| Publication Number | Publication Date |
|---|---|
| CN110143723A true CN110143723A (en) | 2019-08-20 |
Family
ID=67593289
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910442308.4A Pending CN110143723A (en) | 2019-05-25 | 2019-05-25 | A kind of sewage water treatment method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101337755A (en) * | 2008-08-29 | 2009-01-07 | 哈尔滨工业大学 | Biodegradation process for ultra-thick oil waste water in oilfield |
| CN201280498Y (en) * | 2008-09-04 | 2009-07-29 | 江苏兴邦环保工程科技有限公司 | Integrated process apparatus for oily wastewater |
| CN205024039U (en) * | 2015-08-19 | 2016-02-10 | 青海江南环保工程有限公司 | Effluent treatment plant slaughters |
| CN205501042U (en) * | 2016-01-28 | 2016-08-24 | 王祥 | Waste water treatment integrated equipment slaughters |
-
2019
- 2019-05-25 CN CN201910442308.4A patent/CN110143723A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101337755A (en) * | 2008-08-29 | 2009-01-07 | 哈尔滨工业大学 | Biodegradation process for ultra-thick oil waste water in oilfield |
| CN201280498Y (en) * | 2008-09-04 | 2009-07-29 | 江苏兴邦环保工程科技有限公司 | Integrated process apparatus for oily wastewater |
| CN205024039U (en) * | 2015-08-19 | 2016-02-10 | 青海江南环保工程有限公司 | Effluent treatment plant slaughters |
| CN205501042U (en) * | 2016-01-28 | 2016-08-24 | 王祥 | Waste water treatment integrated equipment slaughters |
Non-Patent Citations (1)
| Title |
|---|
| 崔志澂等: "《工业废水处理》", 31 October 1989, 冶金工业出版社 * |
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Application publication date: 20190820 |
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