CN103663857A - Treatment process of comprehensive acid-alkali wastewater - Google Patents
Treatment process of comprehensive acid-alkali wastewater Download PDFInfo
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- CN103663857A CN103663857A CN201310332832.9A CN201310332832A CN103663857A CN 103663857 A CN103663857 A CN 103663857A CN 201310332832 A CN201310332832 A CN 201310332832A CN 103663857 A CN103663857 A CN 103663857A
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Abstract
The invention discloses a treatment process of comprehensive acid-alkali wastewater. The treatment process is characterized by orderly comprising a pretreatment process, a lime milk treatment process, a PH value regulation process, a hydrolysis-acidogenosis process, an aerobic treatment process, a solid-liquid separation process and a sludge treatment process in the treatment sequence. The water discharged to the nature can finally and completely reach the standards through a series of treatment, namely, the pretreatment process, the lime milk treatment process, the PH value regulation process, the hydrolysis-acidogenosis process, the aerobic treatment process, the solid-liquid separation process and the sludge treatment process; simultaneously, the sludge in the sewage is separated out; therefore, classified discharge is realized.
Description
Technical field
The invention belongs to environmental protection equipment technical field, relate in particular to a kind for the treatment of process of comprehensive acidic and alkaline waste water.
Background technology
In comprehensive acidic and alkaline waste water, contain multiple virose compound, and biodegradability is poor, generally BOD/COD value be less than 0.1 and waste water in pollutent form very complicated, usually with pollution factors such as heavy metal ion, fluorochemical, phosphoric acid salt, ammonia nitrogens, and COD cr is dense, the waste water that each production process produces is widely different.Owing to having stabilizing films on drop interface in above-mentioned comprehensive acidic and alkaline waste water, thereby make oil, water be not easy separation.
Above-mentioned comprehensive acidic and alkaline waste water need pass through a series of processing for this reason, can be discharged in the Nature, otherwise be directly discharged into meeting polluted-water in nature water body, cause water hypoxia and affect the existence of fish and other hydrocoles, suspended substance in sewage easily under anaerobic decomposes and produces foul smell simultaneously, worsens water quality.
To being discharged into general employing of processing of nature organic sewage before, to the organism in sewage, use microbial strains to degrade, but this traditional sewage treatmentmethod exist the incomplete phenomenon of processing.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind for the treatment of process of comprehensive acidic and alkaline waste water, has the advantages that harmless treatment effect is good.
For solving the problems of the technologies described above, technical scheme of the present invention is: a kind for the treatment of process of comprehensive acidic and alkaline waste water, its innovative point is, along processing sequence, comprises successively pretreatment technology, milk of lime treatment process, pH value adjusting process, acidication technique, aerobic treatment process, solid-liquid separation process and sludge treatment technique.
Preferably, described pretreatment technology is mainly: first treatment sewage is sent in equalizing tank, then utilize pump that the treatment sewage in equalizing tank is sent in pH adjustment tank, in pH adjustment tank, add acidic solution, regulate below sewage PH value to 3.5, then sewage is delivered to high-voltage pulse coagulation bed, pollution factor in separated sewage, then the sewage after processing is sent into and in one air-floating apparatus, carried out removing dross processing, it is standby that sewage after processing is sent into intermediate pool, and the scum silica frost of separating is sent in sludge thickener.
Preferably, described milk of lime treatment process is mainly: the sewage in pretreated intermediate pool is sent into lime reaction pond, milk of lime, polyacrylamide in lime reaction pond are reacted with sewage, remove suspended substance and negatively charged ion in sewage.
Preferably, described pH value adjusting process is mainly: the sewage after milk of lime is processed is sent into the total adjustment tank of pH, and sulfuric acid amount and sewage in the total adjustment tank of allotment pH carry out neutralization reaction, make the pH value of sewage in the total adjustment tank of pH equal 5.
Preferably, described acidication technique is mainly: the sewage after pH value adjusting process is sent into acidication treating pond, by acidication, process the macromolecular substance open loop chain rupture in sewage, be converted into small-molecule substance.
Preferably, described aerobic treatment process is mainly: the sewage after acidication technique is sent into activated sludge tank, active sludge in activated sewage pond and the suspended solids in sewage and jelly are adsorbed on active sludge, and the organism in sewage and activated sludge reaction generate carbonic acid gas and water.
Preferably, described solid-liquid separation process is mainly: the sewage after aerobic treatment is sent into biochemical sedimentation basin, precipitate and isolate clear water and mud, wherein clear water is sent in discharge pond, and mud is sent in sludge thickener.
Preferably, described sludge treatment technique is mainly: the mud in sludge thickener is squeezed into pressure filter and carried out press dewatering with pneumatic diaphragm pump pressurization, the mud cake obtaining after dehydration carries out drying and other treatment, and the clear liquid that pressure filter press filtration produces enters in discharge pond.
The invention has the advantages that: by adopting a series of processing of above-mentioned pretreatment technology, milk of lime treatment process, pH value adjusting process, acidication technique, aerobic treatment process, solid-liquid separation process and sludge treatment technique, finally make to be discharged in the Nature treated water completely up to standard, mud in sewage is separated simultaneously, accomplished classified emission.
Embodiment
The treatment process of comprehensive acidic and alkaline waste water of the present invention, comprises pretreatment technology, milk of lime treatment process, pH value adjusting process, acidication technique, aerobic treatment process, solid-liquid separation process and sludge treatment technique successively along processing sequence.
Wherein pretreatment technology is mainly: first treatment sewage is sent in equalizing tank, then utilize pump that the treatment sewage in equalizing tank is sent in pH adjustment tank, in pH adjustment tank, add acidic solution, regulate below sewage PH value to 3.5, then sewage is delivered to high-voltage pulse coagulation bed, pollution factor in separated sewage, then the sewage after processing is sent into and in one air-floating apparatus, carried out removing dross processing, it is standby that sewage after processing is sent into intermediate pool, and the scum silica frost of separating is sent in sludge thickener.
The principle of high-voltage pulse coagulation is to produce electrochemical reaction by applying high voltage effect, electric energy conversion, is chemical energy, can carry out redox reaction to the organism in sewage or inorganics, and then adsorbs, condenses, and pollutent is separated from water body.
The principle of one air-floating apparatus is that the form with micro-bubble passes in water by air, make micro-bubble in the particle adhesion suspending in water, form water-gas-particle three-phase mixed system, on particle adhesion after bubble, density is less than water and floats on the surface of the water, thereby makes solid, liquid be able to separation.Simultaneously in breakdown of emulsion reactive tank, dosing coagulant, flocculation agent can further be strengthened air flotation effect, to remove grease in waste water etc., can reduce CODcr, BOD, the colourity of waste water etc. simultaneously.
Wherein milk of lime treatment process is mainly: the sewage in pretreated intermediate pool is sent into lime reaction pond, milk of lime, polyacrylamide in lime reaction pond are reacted with sewage, remove suspended substance and negatively charged ion in sewage.By above-mentioned processing, the salinity in anhydrous is reduced, Wei Hou road is processed normally to move provides basis.Due to the reduction of salinity, reduced the impact load of sewage to facility in addition.
Wherein pH value adjusting process is mainly: the sewage after milk of lime is processed is sent into the total adjustment tank of pH, and sulfuric acid amount and sewage in the total adjustment tank of allotment pH carry out neutralization reaction, make the pH value of sewage in the total adjustment tank of pH equal 5.By the pH value of sewage is adjusted to neutrality, for follow-up biochemical microbial growth breeding provides comparatively suitable water quality environment.
Wherein acidication technique is mainly: the sewage after pH value adjusting process is sent into acidication treating pond, by acidication, process the macromolecular substance open loop chain rupture in sewage, be converted into small-molecule substance.
Wherein aerobic treatment process is mainly: the sewage after acidication technique is sent into activated sludge tank, active sludge in activated sewage pond and the suspended solids in sewage and jelly are adsorbed on active sludge, and the organism in sewage and activated sludge reaction generate carbonic acid gas and water.
Wherein solid-liquid separation process is mainly: the sewage after aerobic treatment is sent into biochemical sedimentation basin, precipitate and isolate clear water and mud, wherein clear water is sent in discharge pond, and mud is sent in sludge thickener.
Wherein sludge treatment technique is mainly: the mud in sludge thickener is squeezed into pressure filter and carried out press dewatering with pneumatic diaphragm pump pressurization, and the mud cake obtaining after dehydration carries out drying and other treatment, and the clear liquid that pressure filter press filtration produces enters in discharge pond.
By adopting a series of processing of above-mentioned pretreatment technology, milk of lime treatment process, pH value adjusting process, acidication technique, aerobic treatment process, solid-liquid separation process and sludge treatment technique, finally make to be discharged in the Nature treated water completely up to standard, mud in sewage is separated simultaneously, accomplished classified emission.
Above the invention embodiment is had been described in detail, but described content is only the preferred embodiment of the invention, can not be considered to for limiting the practical range of the invention.All equalization variations of doing according to the invention application range and improvement etc., within all should belonging to the patent covering scope of the invention.
Claims (8)
1. a treatment process for comprehensive acidic and alkaline waste water, is characterized in that, along processing sequence, comprises successively pretreatment technology, milk of lime treatment process, pH value adjusting process, acidication technique, aerobic treatment process, solid-liquid separation process and sludge treatment technique.
2. the treatment process of a kind of comprehensive acidic and alkaline waste water as claimed in claim 1, it is characterized in that, described pretreatment technology is mainly: first treatment sewage is sent in equalizing tank, then utilize pump that the treatment sewage in equalizing tank is sent in pH adjustment tank, in pH adjustment tank, add acidic solution, regulate below sewage PH value to 3.5, then sewage is delivered to high-voltage pulse coagulation bed, pollution factor in separated sewage, then the sewage after processing is sent into and in one air-floating apparatus, carried out removing dross processing, it is standby that sewage after processing is sent into intermediate pool, and the scum silica frost of separating is sent in sludge thickener.
3. the treatment process of a kind of comprehensive acidic and alkaline waste water as claimed in claim 1, it is characterized in that, described milk of lime treatment process is mainly: the sewage in pretreated intermediate pool is sent into lime reaction pond, milk of lime, polyacrylamide in lime reaction pond are reacted with sewage, remove suspended substance and negatively charged ion in sewage.
4. the treatment process of a kind of comprehensive acidic and alkaline waste water as claimed in claim 1, it is characterized in that, described pH value adjusting process is mainly: the sewage after milk of lime is processed is sent into the total adjustment tank of pH, sulfuric acid amount and sewage in the total adjustment tank of allotment pH carry out neutralization reaction, make the pH value of sewage in the total adjustment tank of pH equal 5.
5. the treatment process of a kind of comprehensive acidic and alkaline waste water as claimed in claim 1, it is characterized in that, described acidication technique is mainly: the sewage after pH value adjusting process is sent into acidication treating pond, by acidication, process the macromolecular substance open loop chain rupture in sewage, be converted into small-molecule substance.
6. the treatment process of a kind of comprehensive acidic and alkaline waste water as claimed in claim 1, it is characterized in that, described aerobic treatment process is mainly: the sewage after acidication technique is sent into activated sludge tank, active sludge in activated sewage pond and the suspended solids in sewage and jelly are adsorbed on active sludge, and the organism in sewage and activated sludge reaction generate carbonic acid gas and water.
7. the treatment process of a kind of comprehensive acidic and alkaline waste water as claimed in claim 1, it is characterized in that, described solid-liquid separation process is mainly: the sewage after aerobic treatment is sent into biochemical sedimentation basin, precipitate and isolate clear water and mud, wherein clear water is sent in discharge pond, and mud is sent in sludge thickener.
8. the treatment process of a kind of comprehensive acidic and alkaline waste water as claimed in claim 1, it is characterized in that, described sludge treatment technique is mainly: the mud in sludge thickener is squeezed into pressure filter and carried out press dewatering with pneumatic diaphragm pump pressurization, the mud cake obtaining after dehydration carries out drying and other treatment, and the clear liquid that pressure filter press filtration produces enters in discharge pond.
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| CN201310332832.9A CN103663857A (en) | 2013-08-02 | 2013-08-02 | Treatment process of comprehensive acid-alkali wastewater |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106219887A (en) * | 2016-08-30 | 2016-12-14 | 芜湖华海生物工程有限公司 | A kind of processing method producing waste water for allantoin production process |
| CN106277615A (en) * | 2016-08-30 | 2017-01-04 | 芜湖华海生物工程有限公司 | A kind of allantoin production process produces the process technique of waste water |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200967783Y (en) * | 2006-11-17 | 2007-10-31 | 辽宁三和环境工程有限公司 | Acid alkali waste water treatment system |
| CN101857340A (en) * | 2010-06-03 | 2010-10-13 | 江西昌河汽车有限责任公司 | Painting wastewater treatment process |
-
2013
- 2013-08-02 CN CN201310332832.9A patent/CN103663857A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200967783Y (en) * | 2006-11-17 | 2007-10-31 | 辽宁三和环境工程有限公司 | Acid alkali waste water treatment system |
| CN101857340A (en) * | 2010-06-03 | 2010-10-13 | 江西昌河汽车有限责任公司 | Painting wastewater treatment process |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106219887A (en) * | 2016-08-30 | 2016-12-14 | 芜湖华海生物工程有限公司 | A kind of processing method producing waste water for allantoin production process |
| CN106277615A (en) * | 2016-08-30 | 2017-01-04 | 芜湖华海生物工程有限公司 | A kind of allantoin production process produces the process technique of waste water |
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Application publication date: 20140326 |