CN102079596B - Method for removing elemental phosphorus in industrial wastewater - Google Patents
Method for removing elemental phosphorus in industrial wastewater Download PDFInfo
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- CN102079596B CN102079596B CN 201010596138 CN201010596138A CN102079596B CN 102079596 B CN102079596 B CN 102079596B CN 201010596138 CN201010596138 CN 201010596138 CN 201010596138 A CN201010596138 A CN 201010596138A CN 102079596 B CN102079596 B CN 102079596B
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Abstract
The invention relates to a method for removing elemental phosphorus in industrial wastewater. The method comprises the following steps: air is pumped in an oxidation pond with wastewater containing elemental phosphorus to perform oxidation treatment while sodium hypochlorite is added to oxidize highly toxic elemental phosphorus in the wastewater; and then sodium hydroxide is added to adjust the pH value, calcium chloride is added to perform chemical precipitation on the wastewater, the effluent of the oxidation pond enters a settling pond for coagulation and flocculation, and the effluent of the settling pond enters a high pressure interception filtration system to remove elemental phosphorus in wastewater. In the method, the treatment technology combining air oxidation and high pressure interception filtration is adopted and the method can effectively treat the wastewater containing high concentration elemental phosphorus. By controlling the recovery rate of the high pressure interception filtration system to 50%-70%, the elemental phosphorus of the treated water is less than 0.1mg/L, which satisfies the grade A wastewater discharge rules of the integrated wastewater discharge standard (GB8978-1996).
Description
Technical field
The present invention relates to a kind of elemental phosphorous method of removing in the trade effluent of pollutent.
Background technology
Produce yellow phosphorus at present and adopt electric furnace process mostly, in the process that adopts electric furnace process manufacture-yellow phosphorus, can produce a large amount of waste water.If do not contain the elemental phosphorous wastewater treatment of hypertoxic pollutent to this, elemental phosphorous will severe contamination underground water, river, the harm natural ecological environment.For dephosphorization, the sewage dephosphorization technology mainly contains two big types of biological process, chemical methods both at home and abroad at present.Biological process such as A/O, A2/O, UCT technology, main processing lower concentration and the organophosphorus of being fit to; Chemical method mainly contains technologies such as coagulant sedimentation, crystallization process, ion exchange adsorption, the main total phosphorus pollution that is fit to handle phosphoric acid salt and so on.But it is elemental phosphorous that these traditional treatment processs can not be handled, and perhaps treatment effect is limited, at most can only be with the elemental phosphorous 0.5mg/L that handles, and existing method can't reach the requirement below the 0.1mg/L that meets the national grade one discharge standard requirement with wastewater treatment.
Summary of the invention
Low for overcoming traditional biochemical method processing efficiency, it is high that the shortcoming of water quality adaptability difference, the technical problem that the present invention will solve provide a kind of processing efficiency, produces elemental phosphorous method in the removal trade effluent that water reaches country-level emission request.
The objective of the invention is to realize like this: a kind ofly remove method elemental phosphorous in the trade effluent; Contain elemental phosphorous waste water through getting into the chemical reaction oxidation pond behind the equalizing tank, in oxidation pond, blast air and carry out oxide treatment, in oxide treatment, in waste water, add Youxiaolin and carry out oxidation highly toxic substance in the waste water is elemental phosphorous; Simple substance particulate form phosphorus is oxidized to ionic state; Add sodium hydroxide then and regulate pH to 9-11, add calcium chloride again and come waste water is carried out chemical precipitation, the oxidation pond water outlet gets into settling tank and carries out coagulation clarification; The water outlet of settling tank gets into high pressure and holds back filtering system; Hold back the filtering system recovery through the control high pressure, make and handle the elemental phosphorous emission standard that reaches of back product water, accomplish elemental phosphorous removal in the waste water.
Every liter contains that the Youxiaolin add-on is 3-30 mg/L in the elemental phosphorous trade effluent.
Every liter of add-on that contains sodium hydroxide in the elemental phosphorous trade effluent is 30-60mg/L.
Every liter contains that the calcium chloride add-on is 130-160mg/L in the elemental phosphorous trade effluent.
High pressure is held back filtering system and is the branch rear and front end, and front end is the interception of tubular type tubular fibre, and the rear end is that high pressure is held back advanced treatment.
The control high pressure is held back front end tubular type tubular fibre interception flux 45～65 L/ (m in the filtering system
2.h), produce water SDI and reach below 3, get into the rear end high pressure and hold back advanced treatment, the recovery of system is 50%-70%.
High pressure is held back the treatment system front end and is held back for utilizing 0.4-0.5 MPa pressure that hydraulic pressure is gone into the tubular type tubular fibre, is the pre-treatment of rear end, and the rear end is that high pressure is held back advanced treatment, is to utilize 1.2-1.6 MPa hyperpressure that water sample is seen through mwco membrane.
Elemental phosphorous method in the removal trade effluent provided by the invention; Regulate water water quality through equalizing tank,, play all and regulating effect so equalizing tank is set owing to come the water variation water quality bigger; Make elemental phosphorous stablizing within the specific limits in the water quality, the dosing control of the back of utilization is arranged; Adopt the treatment process of " atmospheric oxidation+high pressure is held back filtration "; Treatment of high concentration contains elemental phosphorous waste water effectively; Hold back the filtering system recovery 50%-70% through the control high pressure; Can guarantee to handle the back like this and produce the elemental phosphorous 0.1mg/L of being lower than of water, reach " integrated wastewater discharge standard " (GB8978-1996) middle first discharge standard, the system recoveries rate refers to through producing water and the ratio of coming water of advancing native system after this treatment system.If the recovery is too high, with the treatment effect that influences system, if the recovery is too low, then system economy is relatively poor; It is little that the present invention also has floor space, easy and simple to handle, on-the-spot clean and tidy advantage.
Embodiment
Principle of the present invention is following:
Adopt the waste water that produces in the process of electric furnace process manufacture-yellow phosphorus through getting into the chemical reaction oxidation pond behind the equalizing tank; Blast air at this and carry out oxide treatment; Youxiaolin is as oxygenant; Sodium hydroxide, calcium chloride are as reagent, and the chemical reaction oxidation pond is the Chemical Pretreatment section of this technology, and it mainly is through blasting air and adding Youxiaolin and carry out oxidation to highly toxic substance in the waste water is elemental phosphorous; Simple substance particulate form phosphorus is oxidized to ionic state, adds alkali then and regulates and to add calcium chloride behind the pH and come waste water is carried out chemical precipitation.Following reaction takes place
5Ca
2++4OH
-+3HPO
4-?=?Ca
5(OH)(PO
4)
3?+3H
2O
3Ca
2++2PO
4 3-?=?Ca
3(PO
4)
2?
Through above reaction, the most elemental phosphorous deposition that is able in the waste water is removed, and the water outlet of chemical reaction oxidation pond gets into settling tank and carries out coagulation clarification.The water outlet of settling tank gets into high pressure and holds back filtering system; High pressure is held back and is filtered the branch rear and front end; Front end is 0.03 micron tubular type tubular fibre interception, utilizes 0.4-0.5 MPa pressure that hydraulic pressure is gone into the tubular type tubular fibre and holds back, and is the pre-treatment of rear end; Mainly be to remove a large amount of suspended substance in the water, colloid, larger molecular organics etc., control its flux 45～65 L/m
2.h, produce water SDI (SDI) and reach below 3, get into back-end processing; The rear end is that high pressure is held back advanced treatment; Promptly utilize hyperpressure 1.2-1.6 MPas that water sample is seen through special mwco membrane; Pore size filter is 0.1 nanometer; Hold back the filtering system recovery 50%-70% through the control high pressure, can guarantee to handle the back like this and produce the elemental phosphorous 0.1mg/L of being lower than of water, reach " integrated wastewater discharge standard " (GB8978-1996) middle first discharge standard.
Embodiment 1:
Contain elemental phosphorous waste water through getting into the chemical reaction oxidation pond behind the equalizing tank; In oxidation pond, blast air and carry out oxide treatment; In oxide treatment, in waste water, carry out oxidation as oxygenant to highly toxic substance in the waste water is elemental phosphorous by every liter of useless 3 mg Youxiaolin that add, simple substance particulate form phosphorus is oxidized to ionic state, adds sodium hydroxide then and regulates pH to 9-11; Adding calcium chloride 130 mg by every liter of waste water again comes waste water is carried out chemical precipitation; The oxidation pond water outlet gets into settling tank and carries out coagulation clarification, and the water outlet of settling tank gets into high pressure and holds back filtering system, and the control high pressure is held back front end tubular type tubular fibre interception flux 45～65 L/ (m in the filtering system
2.h), produce water SDI and reach below 3, get into the rear end high pressure and hold back advanced treatment, the recovery of system is 50%-70%, behind the treating water in the waste water elemental phosphorous content be 0.08mg/L, reach emission standard.
Embodiment 2:
Contain elemental phosphorous waste water through getting into the chemical reaction oxidation pond behind the equalizing tank; In oxidation pond, blast air and carry out oxide treatment; In oxide treatment, in waste water, carry out oxidation as oxygenant to highly toxic substance in the waste water is elemental phosphorous by every liter of useless 20 mg Youxiaolin that add, simple substance particulate form phosphorus is oxidized to ionic state, adds sodium hydroxide then and regulates pH9-11; Adding calcium chloride 145 mg by every liter of waste water again comes waste water is carried out chemical precipitation; The oxidation pond water outlet gets into settling tank and carries out coagulation clarification, and the water outlet of settling tank gets into high pressure and holds back filtering system, and the control high pressure is held back front end tubular type tubular fibre interception flux 45～65 L/ (m in the filtering system
2.h), produce water SDI and reach below 3, get into the rear end high pressure and hold back advanced treatment, the recovery of system is 50%-70%, behind the treating water in the waste water elemental phosphorous content be 0.075mg/L, reach emission standard.
Embodiment 3:
Contain elemental phosphorous waste water through getting into the chemical reaction oxidation pond behind the equalizing tank; In oxidation pond, blast air and carry out oxide treatment; In oxide treatment, in waste water, carry out oxidation as oxygenant to highly toxic substance in the waste water is elemental phosphorous by every liter of useless 30 mg Youxiaolin that add, simple substance particulate form phosphorus is oxidized to ionic state, adds sodium hydroxide then and regulates pH to 9-11; Adding calcium chloride 160 mg by every liter of waste water again comes waste water is carried out chemical precipitation; The oxidation pond water outlet gets into settling tank and carries out coagulation clarification, and the water outlet of settling tank gets into high pressure and holds back filtering system, and the control high pressure is held back front end tubular type tubular fibre interception flux 45～65 (L/m in the filtering system
2.h), produce water SDI and reach below 3, get into the rear end high pressure and hold back advanced treatment, the recovery of system is 50%-70%, behind the treating water in the waste water elemental phosphorous content be 0.07mg/L, reach emission standard.
Claims (5)
1. remove method elemental phosphorous in the trade effluent for one kind; It is characterized in that: contain elemental phosphorous waste water through getting into the chemical reaction oxidation pond behind the equalizing tank, in oxidation pond, blast air and carry out oxide treatment, in oxide treatment, in waste water, add Youxiaolin and carry out oxidation highly toxic substance in the waste water is elemental phosphorous; Simple substance particulate form phosphorus is oxidized to ionic state; Add sodium hydroxide then and regulate pH to 9-11, add calcium chloride again and come waste water is carried out chemical precipitation, the oxidation pond water outlet gets into settling tank and carries out coagulation clarification; The water outlet of settling tank gets into high pressure and holds back filtering system; High pressure is held back filtering system branch rear and front end, and front end is the interception of tubular type tubular fibre, and the rear end is that high pressure is held back advanced treatment; Hold back the filtering system recovery through the control high pressure, make and handle the elemental phosphorous emission standard that reaches of back product water, accomplish elemental phosphorous removal in the waste water, concrete controlling index is: the control high pressure is held back front end tubular type tubular fibre interception flux 45～65 L/ (m in the filtering system
2.h), produce water SDI and reach below 3, get into the rear end high pressure and hold back advanced treatment, the recovery of system is 50%-70%.
2. elemental phosphorous method in the removal trade effluent according to claim 1 is characterized in that: every liter contains that the Youxiaolin add-on is 3-30 mg/L in the elemental phosphorous trade effluent.
3. elemental phosphorous method in the removal trade effluent according to claim 1 is characterized in that: every liter of add-on that contains sodium hydroxide in the elemental phosphorous trade effluent is 30-60mg/L.
4. elemental phosphorous method in the removal trade effluent according to claim 1 is characterized in that: every liter contains that the calcium chloride add-on is 130-160mg/L in the elemental phosphorous trade effluent.
5. elemental phosphorous method in the removal trade effluent according to claim 1; It is characterized in that: high pressure is held back the filtering system front end and is held back for utilizing 0.4-0.5 MPa pressure that hydraulic pressure is gone into the tubular type tubular fibre; Pre-treatment for the rear end; The rear end is that high pressure is held back advanced treatment, is to utilize 1.2-1.6 MPa hyperpressure that water sample is seen through mwco membrane.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010596138 CN102079596B (en) | 2010-12-20 | 2010-12-20 | Method for removing elemental phosphorus in industrial wastewater |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010596138 CN102079596B (en) | 2010-12-20 | 2010-12-20 | Method for removing elemental phosphorus in industrial wastewater |
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| CN102079596A CN102079596A (en) | 2011-06-01 |
| CN102079596B true CN102079596B (en) | 2012-07-04 |
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| CN 201010596138 Active CN102079596B (en) | 2010-12-20 | 2010-12-20 | Method for removing elemental phosphorus in industrial wastewater |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102351347B (en) * | 2011-09-01 | 2012-12-12 | 东北石油大学 | Treatment method for ultrahigh-concentration sewage containing phosphorus |
| CN103768907B (en) * | 2012-10-26 | 2015-10-28 | 中国石油化工股份有限公司 | A kind of method of yellow phosphoric tail gas oxidation alkali cleaning deep purifying |
| CN110330149A (en) * | 2019-08-13 | 2019-10-15 | 江苏和纯化学工业有限公司 | Sodium hypophosphite production phosphorus-containing wastewater and sludge comprehensive processing method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4399037A (en) * | 1980-10-10 | 1983-08-16 | Hoechst Aktiengesellschaft | Process for working up waste water containing phosphorus |
| CN1086498A (en) * | 1993-10-03 | 1994-05-11 | 周定才 | Yellow phosphorus containing waste water treatment by multi-stage oxidizing and settling |
| CN1524802A (en) * | 2003-09-18 | 2004-09-01 | 李海卫 | Process for treating yellow phosphorus industrial sewage |
-
2010
- 2010-12-20 CN CN 201010596138 patent/CN102079596B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4399037A (en) * | 1980-10-10 | 1983-08-16 | Hoechst Aktiengesellschaft | Process for working up waste water containing phosphorus |
| CN1086498A (en) * | 1993-10-03 | 1994-05-11 | 周定才 | Yellow phosphorus containing waste water treatment by multi-stage oxidizing and settling |
| CN1524802A (en) * | 2003-09-18 | 2004-09-01 | 李海卫 | Process for treating yellow phosphorus industrial sewage |
Non-Patent Citations (2)
| Title |
|---|
| 林徐明等.黄磷废水处理技术.《环境污染治理技术与设备》.2006,第7卷(第9期),第121页右栏第12行-第123页左栏第21页. * |
| 王孝武等.黄磷废水处理工艺比较.《环境污染治理技术与设备》.2003,第4卷(第10期),第59页左栏第2行-第60页左栏第16行. * |
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Effective date of registration: 20211105 Address after: 443007 No. 66-6 Gongting Avenue, Gongting District, Yichang City, Hubei Province Patentee after: HUBEI XINGFA ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. Address before: 443711 Hunan Road, Gufu Town, Xingshan County, Yichang City, Hubei Province Patentee before: HUBEI XINGFA CHEMICALS GROUP Co.,Ltd. |