CN105984996A - Urban sewage treatment method - Google Patents
Urban sewage treatment method Download PDFInfo
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- CN105984996A CN105984996A CN201510068457.0A CN201510068457A CN105984996A CN 105984996 A CN105984996 A CN 105984996A CN 201510068457 A CN201510068457 A CN 201510068457A CN 105984996 A CN105984996 A CN 105984996A
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- adsorption
- flocculation
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- flyash
- filtration
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Abstract
The invention discloses an urban sewage treatment method. The method comprises 1, carrying out grading treatment on fly ash through a sieve of 180 microns, wherein fine granules going through the sieve are used as main net capture flocculation cores and the blocked large granules on the sieve are used as adsorption filtering mediums, 2, carrying out pretreatment and secondary biochemical treatment on urban sewage, 3, treating the treated water through an adsorption flocculation layer to remove organic pollutants and suspensions in water through adsorption flocculation, 4, treating the treated water through an adsorption filter layer to remove fine suspension particles and a part of organic pollutants through adsorption filtration and to remove a plurality of cations through ion exchange, and 5, recycling the fly ash particles subjected to saturated adsorption filtration.
Description
Technical field
The invention belongs to field of environment protection, particularly to the processing method of one way of life sewage.
Background technology
Containing a large amount of organic suspended matters in sanitary sewage, current processing method mainly has two kinds: one to be that sanitary sewage first flows through grid, then water is carried out biochemical film process, in water, adds Calx the most again, utilize Calx and organic suspended matter generation chemical reaction to remove organic suspended matter.This method lime consumption is big, and causes secondary pollution, the bad guarantee of water quality, and the maintenance capacity of equipment is big.Second method is that sanitary sewage first flows through grid, then water is carried out biochemical film process, the most again water is carried out aerobic, anaerobic treatment.This method belongs to Biochemical method, and the water water quality after process is the most stable, but its investment is very big, and floor space is big, thus cost is the highest.
Summary of the invention
It is an object of the invention to provide a kind of low cost, the processing method of the sanitary sewage that floor space is little, water quality is more stable.
The object of the present invention is achieved like this.
The processing method of one way of life sewage, the method step is:
1, first with the sieve of 180 μm, flyash is carried out staged care, catch flocculation core by the fine particle of screen cloth mainly as net, stay the bulky grain on screen cloth as adsorbent filtering medium.
2, sanitary sewage is first passed through pretreatment and secondary biochemical treatment.
3, the water processed 2 flows through adsorption-flocculation layer, removes the organic pollution in water and float by adsorption-flocculation.
4, flow through adsorption filtration layer through 3 water processed, get rid of tiny particle and some organic pollutants by adsorption filtration, and remove multiple cation by ion exchange.
5, the fly ash grain after adsorption filtration is saturated can be continuing with through regeneration.
Above-mentioned adsorption-flocculation medium is that particle diameter is less than the flyash of 180 μm or lime-ash and PAM, PAC, the mixing of bodied ferric sulfate long-chain organic macromolecule flocculant, or arbitrarily mixing and PAM, PAC, the mixing of bodied ferric sulfate long-chain organic macromolecule flocculant between flyash with lime-ash, the volume ratio between adsorption-flocculation medium mixture and water is 10～10000ppm.
Above-mentioned Filtration Adsorption medium is arbitrarily mixing of being more than between flyash or lime-ash or flyash with the lime-ash of 180 μm of particle diameter, and the volume ratio between Filtration Adsorption medium and water is 10～10000ppm.
Fly ash grain regeneration condition after adsorption filtration is saturated is: 200 DEG C carry out roast 1～2 hours.
Sanitary sewage after pretreatment and biochemical treatment first passes through adsorption-flocculation technique, organic macromolecule flocculant is interconnected by hydrophobic group in water, formed one " net ", in infall process, constantly trap tiny fly ash grain and catch the flocculation core of flocculation as net, constantly becoming big, accelerate precipitate and separate, the most tiny fly ash grain is adsorbed with organic pollutants.Water outlet after adsorption-flocculation enters back into adsorption filtration technique, and bigger flyash Filtration Adsorption falls remaining fine suspension in water, purifies water outlet further, and falls the multiple cation in water by ion exchange.
The present invention has the advantage that compared to prior art
(1) owing to not using Calx, but refuse is utilized；Replace the filter medium such as quartz sand, anthracite simultaneously, so low cost；
(2) owing to biological treatment tank need not be built, so floor space is little, and compared with the easily controllable water quality of bioanalysis；
(3) flyash reproducible utilization
(4) water stabilization.
Detailed description of the invention
Below in conjunction with example, the present invention will be further described:
By the most preprocessed for sanitary sewage and biochemical out, now measure float in water outlet be 8.8mg/L, COD be 88mg/L, pH value is 7.0, containing Ca88.27mg/L, containing Mg62.88mg/L.This water flows separately through adsorption-flocculation technique and adsorption filtration technique, and the ppm between flyash and water is respectively 200,450, now record float in water outlet be 4.6mg/L, COD be 48mg/L, containing Ca141.7mg/L, containing Mg50.79mg/L.Reach the water standard of industrial circulating cooling water.
Claims (4)
1. the processing method of one way of life sewage, it is characterized in that: the method step is that (1) first carries out staged care with the sieve of 180 μm to flyash, catch flocculation core by the fine particle of screen cloth mainly as net, stay the bulky grain on screen cloth as adsorbent filtering medium；(2) sanitary sewage is first passed through pretreatment and secondary biochemical treatment；(3) water that (2) processed is flowed through adsorption-flocculation layer, remove the organic dirt in water by adsorption-flocculation
Dye thing and float；(4) water processed through (3) flows through adsorption filtration layer, gets rid of tiny suspension by adsorption filtration
Granule and some organic pollutants, and remove multiple cation by ion exchange；(5) fly ash grain after adsorption filtration is saturated can be continuing with through regeneration.
Processing method the most according to claim 1, it is characterised in that described adsorption-flocculation medium is that particle diameter is less than the flyash of 180 μm or lime-ash and PAM, PAC, the flocculation of bodied ferric sulfate long-chain organic macromolecule
The mixing of agent, or have with PAM, PAC, bodied ferric sulfate long-chain arbitrarily mixing between flyash with lime-ash
The mixing of machine macromole flocculant, the volume ratio between adsorption-flocculation medium mixture and water is 10～10000ppm.
Processing method the most according to claim 1, it is characterized in that described Filtration Adsorption medium is arbitrarily mixing of being more than between flyash or lime-ash or flyash with the lime-ash of 180 μm of particle diameter, the volume ratio between Filtration Adsorption medium and water is 10～10000ppm.
Processing method the most according to claim 1, it is characterised in that regeneration condition is: 200 DEG C carry out roast 1～2 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510068457.0A CN105984996A (en) | 2015-02-10 | 2015-02-10 | Urban sewage treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510068457.0A CN105984996A (en) | 2015-02-10 | 2015-02-10 | Urban sewage treatment method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105984996A true CN105984996A (en) | 2016-10-05 |
Family
ID=57041698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510068457.0A Pending CN105984996A (en) | 2015-02-10 | 2015-02-10 | Urban sewage treatment method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105984996A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113943078A (en) * | 2021-10-28 | 2022-01-18 | 内蒙古万众炜业科技环保股份公司 | Treatment process for sewage generated by coal cracking |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1253920A (en) * | 1999-12-15 | 2000-05-24 | 北京科技大学 | Domestic sewage treatment method |
| CN1785827A (en) * | 2005-11-01 | 2006-06-14 | 北京科技大学 | Treatment method of domestic sewage |
| JP4039820B2 (en) * | 2001-04-19 | 2008-01-30 | 太平洋セメント株式会社 | Wastewater treatment method |
-
2015
- 2015-02-10 CN CN201510068457.0A patent/CN105984996A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1253920A (en) * | 1999-12-15 | 2000-05-24 | 北京科技大学 | Domestic sewage treatment method |
| JP4039820B2 (en) * | 2001-04-19 | 2008-01-30 | 太平洋セメント株式会社 | Wastewater treatment method |
| CN1785827A (en) * | 2005-11-01 | 2006-06-14 | 北京科技大学 | Treatment method of domestic sewage |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113943078A (en) * | 2021-10-28 | 2022-01-18 | 内蒙古万众炜业科技环保股份公司 | Treatment process for sewage generated by coal cracking |
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| C06 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161005 |