CN106315911A - Treatment method of high-phosphorus domestic sewage - Google Patents

Treatment method of high-phosphorus domestic sewage Download PDF

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Publication number
CN106315911A
CN106315911A CN201610706504.4A CN201610706504A CN106315911A CN 106315911 A CN106315911 A CN 106315911A CN 201610706504 A CN201610706504 A CN 201610706504A CN 106315911 A CN106315911 A CN 106315911A
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CN
China
Prior art keywords
precipitant
attapulgite
sanitary sewage
parts
filtrate
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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.)
Pending
Application number
CN201610706504.4A
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Chinese (zh)
Inventor
钱忠宝
廉守英
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Xing'an Anhui Electric Ltd By Share Ltd
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Xing'an Anhui Electric Ltd By Share Ltd
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Priority to CN201610706504.4A priority Critical patent/CN106315911A/en
Publication of CN106315911A publication Critical patent/CN106315911A/en
Pending legal-status Critical Current

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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
    • 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
    • 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
    • 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
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
    • 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
    • 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
    • C02F1/66—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
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/18—PO4-P
    • 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

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Water Treatment By Sorption (AREA)

Abstract

The invention relates to a treatment method of high-phosphorus domestic sewage. The method comprises the following steps: (1) filtering domestic sewage to remove large-granule impurities, and carrying out aeration treatment on the domestic sewage; (2) adding the domestic sewage treated by the step (1) into a precipitation tank, regulating the pH value to 7.5-8.5, adding a precipitant A (165-180 mg/L) into the tank, stirring at normal temperature for 25-30 minutes, standing for 10-25 minutes, and filtering; (3) regulating the pH value of the filtrate obtained in the step (2) to 6.5-7.5, adding a precipitant B (85-92 mg/L) into the filtrate, heating to 38-40 DEG C, stirring for 5-8 minutes, standing for 10-15 minutes, and filtering; and (4) treating the filtrate obtained in the step (3) by activated carbon, and regulating the pH value to 6.5-7.5. The phosphorus content in the treated sewage is much lower than the national discharge standard.

Description

A kind of processing method of high phosphorus sanitary sewage
Technical field
The invention belongs to water treatment field, be specifically related to the processing method of a kind of high phosphorus sanitary sewage.
Background technology
Sanitary sewage is mainly in urban life the various detergents and sewage, rubbish, feces etc. used, and mostly is nontoxic Inorganic salts, many containing nitrogen phosphate and sulfur in sanitary sewage, malignant bacteria is many.Being widely used of detergent in the most in recent years, causes Phosphorus in Domestic Wastewater with Pulverized content remains high, and Phosphorus From Wastewater content height can cause serious pollution, therefore, needs before discharging to carry out Process, reduce the phosphorus content in waste water, the most directly use aluminium salt to process, but, aluminium salt addition is wayward, place Reason effect can not meet the demand of directly discharge.
Summary of the invention
It is an object of the invention to provide the processing method of a kind of high phosphorus sanitary sewage, by the method processed and precipitant Improve, improve the effect of process.
The present invention is achieved through the following technical solutions:
The processing method of a kind of high phosphorus sanitary sewage, comprises the following steps:
(1), sanitary sewage is filtered, remove large granular impurity therein, then sanitary sewage is carried out Air Exposure；
(2), the sanitary sewage after step (1) process being added sedimentation tank, regulation PH is 7.5-8.5, throws in precipitant in pond A, precipitant A injected volume is 165-180mg/L, at normal temperatures stir process 25-30min, the most static 10-25min, filters；
Precipitant A is made up of following component by weight: aluminium polychlorid 6.25 parts, attapulgite 5.42 parts, aluminum sulfate 2.15 Part, 2.36 parts of ferrous sulfate；
(3) the filtrate regulation PH to 6.5-7.5, by step (2) being filtrated to get, then adds precipitant B, precipitant in filtrate The addition of B is 85-92mg/L, after precipitant adds, is warming up to 38-40 DEG C, stirring 5-8min, the most static 10-15min, Filter；
Precipitant B is made up of following raw material by weight: aluminium polychlorid 1.85 parts, polyvinyl alcohol 6.4 parts, ferrous sulfate 2.15 Part；
(4) filtrate, by step (3) obtained uses activated carbon to process, by PH regulation to 6.5-7.5.
When step (4) activated carbon processes, activated carbon layering is arranged, and the thickness of every layer of active carbon layer is 6-7cm, activated carbon Interlayer uses fine sand to fill, and fine sand layer thickness is 3-5cm.
Described attapulgite is through modification, and attapulgite modified preparation method is as follows:
(1), by attapulgite natural air drying, putting into iron pan and carry out parch, parch temperature is at 550-600 DEG C, and the parch time is 10- 12min；
(2) hydrofluoric acid solution immersion treatment 2-3h, by attapulgite good for step (1) parch using mass fraction to be 10%, so After wash；
(3) attapulgite, by step (2) handled well is dried at 35-40 DEG C, then by attapulgite use by aluminum sulfate, The sulfuric acid solution of mass fraction 0.5% processes 1-2h by weight the solution soaking of 1:5 preparation, uses ultrasound wave in immersion process Concussion, then dries attapulgite, obtains attapulgite modified.
Beneficial effects of the present invention: the processing method of the sanitary sewage that the present invention provides is simple, by first carrying out at aeration Reason, the precipitant then re-using proportioning processes, and improves the clearance of phosphorus.It is heavy that the precipitant used in the present invention is divided into Shallow lake agent A and precipitant B, although be common water treatment agent in raw material, but, after compounding, PH bar in this application Under part, the effect of its dephosphorization is greatly promoted, and high phosphorus sanitary sewage phosphorus content after the application method processes can be reduced to 0.25- 0.4mg/L, at or below national standard.
Detailed description of the invention
Embodiment 1
The processing method of a kind of high phosphorus sanitary sewage, comprises the following steps:
(1), sanitary sewage is filtered, remove large granular impurity therein, then sanitary sewage is carried out Air Exposure；
(2), the sanitary sewage after step (1) process being added sedimentation tank, regulation PH is 8, throws in precipitant A, precipitation in pond Agent A injected volume is 172mg/L, at normal temperatures stir process 25min, the most static 20min, filters；
Precipitant A is made up of following component by weight: aluminium polychlorid 6.25 parts, attapulgite 5.42 parts, aluminum sulfate 2.15 Part, 2.36 parts of ferrous sulfate；
(3) the filtrate regulation PH to 7.2, by step (2) being filtrated to get, then adds precipitant B in filtrate, precipitant B's Addition is 88mg/L, after precipitant adds, is warming up to 38 DEG C, stirring 6min, the most static 12min, filters；
Precipitant B is made up of following raw material by weight: aluminium polychlorid 1.85 parts, polyvinyl alcohol 6.4 parts, ferrous sulfate 2.15 Part；
(4) filtrate, by step (3) obtained uses activated carbon to process, by PH regulation to 6.5-7.5.
When step (4) activated carbon processes, activated carbon layering is arranged, and the thickness of every layer of active carbon layer is 7cm, active carbon layer Between use fine sand fill, fine sand layer thickness is 4cm.
Described attapulgite modified preparation method is as follows:
(1), by attapulgite natural air drying, putting into iron pan and carry out parch, parch temperature is at 585-590 DEG C, and the parch time is 10min；
(2) hydrofluoric acid solution immersion treatment 2h, by attapulgite good for step (1) parch using mass fraction to be 10%, then Wash；
(3) attapulgite, by step (2) handled well is dried at 35-40 DEG C, then by attapulgite use by aluminum sulfate, The sulfuric acid solution of mass fraction 0.5% processes 1-2h by weight the solution soaking of 1:5 preparation, uses ultrasound wave in immersion process Concussion, then dries attapulgite, obtains attapulgite modified.
The method using the present embodiment processes the sanitary sewage of phosphorus content 268mg/L, and after treatment, sewage phosphorus content is 0.31mg/L, far below the discharge standard of national requirements, through Experimental comparison, the precipitant of the application is relative to being used alone aluminum Salt, iron salt class dephosphorization agent, treatment effect is obviously improved, and safety is the highest, can also reduce the weight such as copper, hydrargyrum in sewage after process Metal ion content.
Embodiment 2
The processing method of a kind of high phosphorus sanitary sewage, comprises the following steps:
(1), sanitary sewage is filtered, remove large granular impurity therein, then sanitary sewage is carried out Air Exposure；
(2), the sanitary sewage after step (1) process being added sedimentation tank, regulation PH is 7.5, throws in precipitant A in pond, heavy Agent A injected volume in shallow lake is 168mg/L, at normal temperatures stir process 25-30min, the most static 10-25min, filters；
Precipitant A is made up of following component by weight: aluminium polychlorid 6.25 parts, attapulgite 5.42 parts, aluminum sulfate 2.15 Part, 2.36 parts of ferrous sulfate；
(3) the filtrate regulation PH to 6.8, by step (2) being filtrated to get, then adds precipitant B in filtrate, precipitant B's Addition is 90mg/L, after precipitant adds, is warming up to 38-40 DEG C, stirring 5-8min, the most static 10-15min, filters；
Precipitant B is made up of following raw material by weight: aluminium polychlorid 1.85 parts, polyvinyl alcohol 6.4 parts, ferrous sulfate 2.15 Part；
(4) filtrate, by step (3) obtained uses activated carbon to process, by PH regulation to 6.5-7.5.
The method using the present embodiment processes the sanitary sewage of phosphorus content 268mg/L, and after treatment, sewage phosphorus content is 1.2 mg/L, reach the discharge standard of national requirements.
Embodiment 3
The processing method of a kind of high phosphorus sanitary sewage, comprises the following steps:
(1), sanitary sewage is filtered, remove large granular impurity therein, then sanitary sewage is carried out Air Exposure；
(2), the sanitary sewage after step (1) process being added sedimentation tank, regulation PH is 8.2, throws in precipitant A in pond, heavy Agent A injected volume in shallow lake is 172mg/L, at normal temperatures stir process 25-30min, the most static 10-25min, filters；
Precipitant A is made up of following component by weight: aluminium polychlorid 6.25 parts, attapulgite 5.42 parts, aluminum sulfate 2.15 Part, 2.36 parts of ferrous sulfate；
(3) the filtrate regulation PH to 6.5-7.5, by step (2) being filtrated to get, then adds precipitant B, precipitant in filtrate The addition of B is 87mg/L, after precipitant adds, is warming up to 38-40 DEG C, stirring 5-8min, the most static 10-15min, mistake Filter；
Precipitant B is made up of following raw material by weight: aluminium polychlorid 1.85 parts, polyvinyl alcohol 6.4 parts, ferrous sulfate 2.15 Part；
(4) filtrate, by step (3) obtained uses activated carbon to process, by PH regulation to 6.5-7.5.

Claims (3)

1. the processing method of a high phosphorus sanitary sewage, it is characterised in that comprise the following steps:
(1), sanitary sewage is filtered, remove large granular impurity therein, then sanitary sewage is carried out Air Exposure；
(2), the sanitary sewage after step (1) process being added sedimentation tank, regulation PH is 7.5-8.5, throws in precipitant in pond A, precipitant A injected volume is 165-180mg/L, at normal temperatures stir process 25-30min, the most static 10-25min, filters；
Precipitant A is made up of following component by weight: aluminium polychlorid 6.25 parts, attapulgite 5.42 parts, aluminum sulfate 2.15 Part, 2.36 parts of ferrous sulfate；
(3) the filtrate regulation PH to 6.5-7.5, by step (2) being filtrated to get, then adds precipitant B, precipitant in filtrate The addition of B is 85-92mg/L, after precipitant adds, is warming up to 38-40 DEG C, stirring 5-8min, the most static 10-15min, Filter；
Precipitant B is made up of following raw material by weight: aluminium polychlorid 1.85 parts, polyvinyl alcohol 6.4 parts, ferrous sulfate 2.15 Part；
(4) filtrate, by step (3) obtained uses activated carbon to process, by PH regulation to 6.5-7.5.
The processing method of a kind of high phosphorus sanitary sewage the most according to claim 1, it is characterised in that in step (4) activity When charcoal processes, activated carbon layering is arranged, and the thickness of every layer of active carbon layer is 6-7cm, uses fine sand to fill, fine sand between active carbon layer Layer thickness is 3-5cm.
The processing method of a kind of high phosphorus sanitary sewage the most according to claim 1 and 2, it is characterised in that described attapulgite Soil is through modification, and processing method is as follows:
(1), by attapulgite natural air drying, putting into iron pan and carry out parch, parch temperature is at 550-600 DEG C, and the parch time is 10- 12min；
(2) hydrofluoric acid solution immersion treatment 2-3h, by attapulgite good for step (1) parch using mass fraction to be 10%, so After wash；
(3) attapulgite, by step (2) handled well is dried at 35-40 DEG C, then by attapulgite use by aluminum sulfate, The sulfuric acid solution of mass fraction 0.5% processes 1-2h by weight the solution soaking of 1:5 preparation, uses ultrasound wave in immersion process Concussion, then dries attapulgite, obtains attapulgite modified.
CN201610706504.4A 2016-08-23 2016-08-23 Treatment method of high-phosphorus domestic sewage Pending CN106315911A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610706504.4A CN106315911A (en) 2016-08-23 2016-08-23 Treatment method of high-phosphorus domestic sewage

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Application Number Priority Date Filing Date Title
CN201610706504.4A CN106315911A (en) 2016-08-23 2016-08-23 Treatment method of high-phosphorus domestic sewage

Publications (1)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102139974A (en) * 2011-02-21 2011-08-03 李开明 Treatment method of phosphorus-containing waste water
CN202968295U (en) * 2012-11-05 2013-06-05 江苏龙腾工程设计有限公司 High-concentration phosphorus-containing wastewater treatment device
CN104968609A (en) * 2012-11-01 2015-10-07 哈洛资源公司 Water treatment composition and method of using same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102139974A (en) * 2011-02-21 2011-08-03 李开明 Treatment method of phosphorus-containing waste water
CN104968609A (en) * 2012-11-01 2015-10-07 哈洛资源公司 Water treatment composition and method of using same
CN202968295U (en) * 2012-11-05 2013-06-05 江苏龙腾工程设计有限公司 High-concentration phosphorus-containing wastewater treatment device

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