CN108017196B - A kind of wastewater deep treatment process of acid out oxidizing, flocculating precipitating - Google Patents
A kind of wastewater deep treatment process of acid out oxidizing, flocculating precipitating Download PDFInfo
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- CN108017196B CN108017196B CN201711338275.6A CN201711338275A CN108017196B CN 108017196 B CN108017196 B CN 108017196B CN 201711338275 A CN201711338275 A CN 201711338275A CN 108017196 B CN108017196 B CN 108017196B
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- 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
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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
- 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
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by 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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
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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
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
Abstract
The invention discloses a kind of wastewater deep treatment process of acid out oxidizing, flocculating precipitating, include the following steps: that outputted aerobic water squeezes into conditioning tank through pump, the sulfuric acid that concentration is 98% is added toward conditioning tank, it flows into and carries out oxidation processes inside oxidation pond, reaction tank is added after coagulant, flows into flocculation basin, polyacrylamide is added to flocculate, water after flocculation passes through sloping plate deposition, is discharged using sand filter, finally discharges.The present invention relates to Sewage advanced treatment technical fields, the wastewater deep treatment process of acid out oxidizing, flocculating precipitating, solves the case where present people are also only surface-treated the processing of waste water, it is single to change original waste water treatment process, preferably improve the effect of Sewage advanced treatment, it ensure that the sundries such as the bacterium of waste water deeper can be handled thoroughly, biggish pollution can also be caused to ecological environment by greatly reducing discharge, meet social environmentally protective idea of development.
Description
Technical field
The present invention relates to Sewage advanced treatment technical field, specially a kind of waste water advanced place of acid out oxidizing, flocculating precipitating
Science and engineering skill.
Background technique
Waste water refers to the general name of the water being discharged in resident's active procedure and runoff rainwater.It includes sanitary sewage, Industry Waste
Water and first rain diameter flow into other useless water such as sewer, refer generally to be unable to after certain technical treatment recycling or
The water that certain standard is not achieved in pure processing difficulty is made after level-one pollution.
Advanced treatment of wastewater refers to that municipal sewage or industrial wastewater after level-one, two stage treatment, return to reach certain
Water supply standard makes sewage be back to the further water treatment procedure of production or life as water resource.For the original of sewage (waste water)
Water quality requirement can further use tertiary treatment or multilevel processing technology to water water quality with treated.It is usually used in micro- in water removal
Measure COD and BOD organic pollution materials, SS and nitrogen, phosphorus high concentration nutritional substance and salt.The method of advanced treating has: flocculation is heavy
Shallow lake method, sand filtration method, activated carbon method, Ozonation, membrane separation process, ion-exchange, electrolysis processing, wet oxidation process, catalysis
The physico-chemical process such as oxidizing process, evaporation concentration method and biological denitrificaion, dephosphorization method etc..Deep treatment method somewhat expensive, management
More complex, the expense for handling water per ton is about 4-5 times or more of coagulation expense.
Waste water is in the ambient level for endangering our lives gradually, and people are to the consciousness of ecological environmental protection
It increases, still, the waste water having resulted in, which also needs to carry out preferably to handle, to be discharged, now, place of the people to waste water
Reason is also the processing on surface, and the technique of processing is single, and ineffective, the sundries such as bacterium of waste water deeper do not carry out thorough
The processing at bottom, direct emission can also cause biggish pollution to ecological environment, not meet the environmentally protective idea of development of society.
Summary of the invention
(1) the technical issues of solving
In view of the deficiencies of the prior art, the present invention provides a kind of Sewage advanced treatment works of acid out oxidizing, flocculating precipitating
Skill solves the processing that people are also surface to the processing of waste water, and the technique of processing is single, ineffective, waste water deeper
The sundries such as bacterium not handled thoroughly, direct emission can also cause biggish pollution to ecological environment, not meet
The problem of social environmentally protective idea of development.
(2) technical solution
In order to achieve the above object, the present invention is achieved by the following technical programs: a kind of acid out oxidizing, flocculating precipitating
Wastewater deep treatment process includes the following steps:
S1, outputted aerobic water COD generally in 145mg/L--155mg/L, squeeze into conditioning tank through pump；
S2, concentration is added toward conditioning tank as 98% sulfuric acid, and then pH value is adjusted, adapt to lignin acidification analysis
Out, because the pH value of outputted aerobic water is in 7.3--7.7, the adjustable range of pH value is 5.8--6.2, because coagulant itself is acid
, the pH value of sewage can decrease after addition, and acid out, flocculation, coagulant reaction best pH value be 4.8--5.2, sulphur
The dosage of acid will change, water COD high according to the variation of influent COD, and coagulant charging quantity is big, and pH value will adjust high by one
Point, on the contrary pH value will be turned down a bit, in a word, it is ensured that it is added after coagulant, the PH of oxidation pond most 4.8--5.2；
S3, reaction tank be added coagulant after, allow its react 20--30 minutes after, then flow into flocculation basin, add poly-
Acrylamide flocculates；
Water after S4, flocculation passes through sloping plate deposition, is discharged using sand filter, finally discharges；
S5, discharge water ph value are 5.3--5.7, and national emission standard 6.0 can use the side of aeration stripping in rear end
Formula promotes pH value, and aeration time is depending on aeration quantity, generally can general at 2--3 minutes if aeration quantity was at 10L/ minute
PH is promoted to 6.0, is reduced sodium hydroxide consumption, is reduced operating cost.
Preferably, in S2, the adjustment for pH value of intaking is maintained between 5.8--6.2.
Preferably, in S2, the pH value of oxidation pond will be maintained between 4.8--5.2.
Preferably, in S3, the dosage of coagulant is determined according to influent COD, such as: when influent COD is 130mg/l, being thrown
Dosage is discharged COD in 65mg/l or so between 800--900ppm.
Preferably, in S4, after flocculant concentration, for mixing time at 5 minutes or so, mixing speed should not be too fast, with
The molecular structure for exempting from destruction flocculant, influences flocculating effect.
Preferably, in S2, the main ingredient of coagulant is polyferric silicate sulfate, has oxidation, flocculating function.
(3) beneficial effect
The present invention provides a kind of wastewater deep treatment process of acid out oxidizing, flocculating precipitating.Have it is following the utility model has the advantages that
The wastewater deep treatment process of acid out oxidizing, flocculating precipitating is squeezed into conditioning tank through pump by outputted aerobic water, is added toward conditioning tank
The sulfuric acid that concentration is 98% flows into and carries out oxidation processes inside oxidation pond, and reaction tank is added after coagulant, flows into flocculation basin,
It adds polyacrylamide to flocculate, the water after flocculating passes through sloping plate deposition, and water outlet is finally discharged useless using sand filter
Water depth treatment process solves the case where present people are also only surface-treated the processing of waste water, changes original useless
Water treatment technology is single, preferably improves the effect of Sewage advanced treatment, ensure that the sundries such as the bacterium of waste water deeper can
Thoroughly to be handled, biggish pollution can also be caused to ecological environment by greatly reducing discharge, meet social green
The idea of development of environmental protection.
Specific embodiment
Described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on the present invention
In embodiment, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
Technical problems based on background technology, the present invention provide a kind of technical solution: a kind of acid out oxidizing, flocculating is heavy
The wastewater deep treatment process in shallow lake, includes the following steps:
Embodiment one
S1, outputted aerobic water COD generally in 145mg/L, squeeze into conditioning tank through pump；
S2, concentration is added toward conditioning tank as 98% sulfuric acid, and then pH value is adjusted, adapt to lignin acidification analysis
Out, because the pH value of outputted aerobic water is 7.3, the adjustable range of pH value is 5.8, because coagulant itself be it is acid, after addition
The pH value of sewage can decrease, and acid out, flocculation, coagulant reaction best pH value be 4.8, the dosage of sulfuric acid will basis
The variation of influent COD and change, water COD high, coagulant charging quantity is big, pH value will adjust it is high a bit, otherwise pH value will
It turns down a bit, in a word, it is ensured that be added after coagulant, the PH of oxidation pond most 4.8；
S3, reaction tank be added coagulant after, allow its reaction after twenty minutes, then flow into flocculation basin, add polypropylene
Amide flocculates；
Water after S4, flocculation passes through sloping plate deposition, is discharged using sand filter, finally discharges；
S5, discharge water ph value are 5.3, and national emission standard 6.0 is promoted in the mode that rear end can use aeration stripping
PH value, aeration time is depending on aeration quantity, if aeration quantity was at 10L/ minutes, generally can promote PH at 2 minutes and arrive
6.0, sodium hydroxide consumption is reduced, operating cost is reduced.
Embodiment two
S1, outputted aerobic water COD generally in 150mg/L, squeeze into conditioning tank through pump；
S2, concentration is added toward conditioning tank as 98% sulfuric acid, and then pH value is adjusted, adapt to lignin acidification analysis
Out, because the pH value of outputted aerobic water is 7.5, the adjustable range of pH value is 6.0, because coagulant itself be it is acid, after addition
The pH value of sewage can decrease, and acid out, flocculation, coagulant reaction best pH value be 5.0, the dosage of sulfuric acid will basis
The variation of influent COD and change, water COD high, coagulant charging quantity is big, pH value will adjust it is high a bit, otherwise pH value will
It turns down a bit, in a word, it is ensured that be added after coagulant, the PH of oxidation pond most 5.0；
S3, reaction tank be added coagulant after, allow its react 25 minutes after, then flow into flocculation basin, add polypropylene
Amide flocculates；
Water after S4, flocculation passes through sloping plate deposition, is discharged using sand filter, finally discharges；
S5, discharge water ph value are 5.5, and national emission standard 6.0 is promoted in the mode that rear end can use aeration stripping
PH value, aeration time, if aeration quantity was at 10L/ minutes, generally can promote PH at 2.5 minutes depending on aeration quantity
To 6.0, sodium hydroxide consumption is reduced, operating cost is reduced.
Embodiment three
S1, outputted aerobic water COD generally in 155mg/L, squeeze into conditioning tank through pump；
S2, concentration is added toward conditioning tank as 98% sulfuric acid, and then pH value is adjusted, adapt to lignin acidification analysis
Out, because the pH value of outputted aerobic water is 7.7, the adjustable range of pH value is 6.2, because coagulant itself be it is acid, after addition
The pH value of sewage can decrease, and acid out, flocculation, coagulant reaction best pH value be 5.2, the dosage of sulfuric acid will basis
The variation of influent COD and change, water COD high, coagulant charging quantity is big, pH value will adjust it is high a bit, otherwise pH value will
It turns down a bit, in a word, it is ensured that be added after coagulant, the PH of oxidation pond most 5.2；
S3, reaction tank be added coagulant after, allow its react 30 minutes after, then flow into flocculation basin, add polypropylene
Amide flocculates；
Water after S4, flocculation passes through sloping plate deposition, is discharged using sand filter, finally discharges；
S5, discharge water ph value are 5.7, and national emission standard 6.0 is promoted in the mode that rear end can use aeration stripping
PH value, aeration time is depending on aeration quantity, if aeration quantity was at 10L/ minutes, generally can promote PH at 3 minutes and arrive
6.0, sodium hydroxide consumption is reduced, operating cost is reduced.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (1)
1. a kind of wastewater deep treatment process of acid out oxidizing, flocculating precipitating, which is characterized in that step are as follows:
S1, outputted aerobic water COD be 145mg/L--155mg/L, through pump squeeze into conditioning tank；
S2, concentration is added toward conditioning tank as 98% sulfuric acid, and then pH value is adjusted, adapted to lignin acidification and be precipitated, because
For outputted aerobic water pH value in 7.3--7.7, the adjustable range of pH value is 5.8--6.2；Because coagulant itself is acid, addition
The pH value of sewage can decrease later, and the optimal pH of coagulation, flocculation reaction is 4.8--5.2, and the dosage of sulfuric acid wants root
Change, water COD high according to the variation of influent COD, coagulant charging quantity is big, and pH value will adjust height a bit, otherwise pH value is just
It turns down a bit, in a word, it is ensured that be added after coagulant, the pH value of reaction tank is 4.8--5.2；
S3, reaction tank be added coagulant after, allow its react 20--30 minutes after, then flow into flocculation basin, add polypropylene
Amide flocculates；
Water after S4, flocculation passes through sloping plate deposition, is discharged using sand filter, finally discharges；
S5, discharge water pH value are 5.3--5.7, and national emission standard 6.0 promotes pH in rear end in the way of aeration stripping
Value, aeration time is depending on aeration quantity, if aeration quantity was at 10L/ minute, at 2--3 minute by pH promotion to 6.0, reduction hydrogen
Sodium waste is aoxidized, operating cost is reduced；
Wherein, in S2, the main ingredient of coagulant is polyferric silicate sulfate；
In S3, when influent COD is 130mg/L, for dosage between 800--900ppm, water outlet COD is 65mg/L；
In S4, after flocculant concentration, stirring 5 minutes, mixing speed should not be too fast, in order to avoid destroy the molecule knot of flocculant
Structure influences flocculating effect.
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| CN108017196B true CN108017196B (en) | 2019-03-05 |
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| CN109292926A (en) * | 2018-10-08 | 2019-02-01 | 中机铸材科技（福建）有限公司 | Wastewater treatment method in discarded sodium silicate process cast used sand treatment process |
| CN110902963B (en) * | 2019-12-10 | 2022-06-24 | 九江天赐高新材料有限公司 | Treatment method of alkali-soluble polymer-containing wastewater |
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| CN1101343C (en) * | 1999-12-09 | 2003-02-12 | 中国石油化工集团公司 | Process for treating waste water containing sulfanilamide |
| CN100494087C (en) * | 2005-12-30 | 2009-06-03 | 宜宾丝丽雅股份有限公司 | Process for treating acidic waste water of viscose fibre industry |
| CN100528752C (en) * | 2007-09-17 | 2009-08-19 | 长沙理工大学 | Method for reclaiming lignin and alkali from boiling black liquor |
| CN105236662A (en) * | 2015-09-28 | 2016-01-13 | 罗依依 | Comprehensive standard improving apparatus for municipal sewage treatment plant discharge water from glade 1B to grade A |
| CN105314769B (en) * | 2015-11-04 | 2018-05-18 | 西安建筑科技大学 | Scale removal equipment is gone in a kind of integration |
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