CN103771622A - Method for removing phosphorous from domestic sewage - Google Patents
Method for removing phosphorous from domestic sewage Download PDFInfo
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- CN103771622A CN103771622A CN201410024299.4A CN201410024299A CN103771622A CN 103771622 A CN103771622 A CN 103771622A CN 201410024299 A CN201410024299 A CN 201410024299A CN 103771622 A CN103771622 A CN 103771622A
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Abstract
The invention discloses a method for removing phosphorous from domestic sewage. The method comprises the following steps: adding lime into to-be-treated sewage, regulating the pH value to be 10-11, stirring for 30-60 minutes, standing, filtering, adding a ferric salt into the filtrate, stirring for 30-60 minutes, filtering, measuring the content of phosphorous in the filtrate, and emitting on standard, wherein the ferric salt is ferric trichloride or ferric sulfate, and the addition amount of the ferric salt is 5-15mg in every liter of sewage. The invention provides a method for removing phosphorous from domestic sewage, the treatment method is simple and easy to operate, especially in the phosphorous removal aspect, the total phosphorous removal rate is over 97 percent, the removal efficiency is high, and the method is small in reagent amount and low in cost.
Description
Technical field
The invention belongs to technical field of sewage, be specifically related to one way of life sewage dephosphorization method.
Background technology
The sewage producing in human lives's process is one of primary pollution source of water body.Sanitary sewage is compared with other trade effluents, and principal pollutant are ight soil and wash water.Wherein in wash water, phosphorus content is higher, is main pollution-producing, and a large amount of phosphorous sanitary sewages enter in rivers,lakes and seas, has increased the load of water nutrition material, thereby causes that Measures of Algae in Water Body and waterplant breed extremely, i.e. the eutrophication of water body.Excessive phosphorus also can serious harm ocean environment, causes red tide.Normally adopt anaerobic reactor to carry out anaerobically fermenting processing for the processing of sanitary sewage, but anaerobic technique is undesirable to the removal effect of nitrogen phosphorus, need to further does dephosphorization processing to water outlet.For research and the application history of existing more than 20 year of dephosphorization technique, the method for waste water dephosphorization mainly comprises: biological process, chemical precipitation method, physisorphtion, membrane technique facture and soil treatment method etc.
Summary of the invention
The object of the invention is to provide one way of life sewage dephosphorization method, and this treatment process is simple to operation, and especially, aspect dephosphorization, water quality phosphorus content after treatment is far away higher than national standard.
To achieve these goals, the technical solution used in the present invention is: one way of life sewage dephosphorization method, in treatment sewage, add lime, and regulate pH value 10 ~ 11, stir 30 ~ 60min, leave standstill, filter, in filtrate, add again molysite, stir 30 ~ 60min, filter, filtrate is surveyed phosphorus content, qualified discharge.
Described molysite is iron trichloride or ferric sulfate.
The add-on of described molysite is to add 5 ~ 15mg in every liter of sewage.
Beneficial effect: the invention provides one way of life sewage dephosphorization method, this treatment process is simple to operation, especially, aspect dephosphorization, total tp removal rate is up to more than 97%, and removal efficiency is high, and reagent dosage is few, and cost is low.
Embodiment
Wastewater Sample in following examples is taken from the sanitary sewage of community, Nantong, and the first water outlet after biochemical treatment of water sample is as dephosphorization experimental water, and water sample total phosphorous TP is 4 ~ 9mg/L.
Embodiment 1:
One way of life sewage dephosphorization method, in treatment sewage, add lime, regulate pH value 11, stir 30min, leave standstill, filter, in filtrate, add iron trichloride again, the add-on of iron trichloride is to add 10mg in every liter of sewage, stir 30min, filter, filtrate is surveyed phosphorus content, and tp removal rate is 97.8%.
Embodiment 2:
One way of life sewage dephosphorization method, in treatment sewage, add lime, regulate pH value 10, stir 60min, leave standstill, filter, in filtrate, add iron trichloride again, the add-on of iron trichloride is to add 15mg in every liter of sewage, stir 60min, filter, filtrate is surveyed phosphorus content, and tp removal rate is 98.2%.
Claims (3)
1. one way of life sewage dephosphorization method, is characterized in that: in treatment sewage, add lime, regulate pH value 10 ~ 11, stir 30 ~ 60min, leave standstill, filter, in filtrate, add molysite again, stir 30 ~ 60min, filter, filtrate is surveyed phosphorus content, qualified discharge.
2. one way of life sewage dephosphorization method according to claim 1, is characterized in that: described molysite is iron trichloride or ferric sulfate.
3. one way of life sewage dephosphorization method according to claim 1, is characterized in that: the add-on of described molysite is to add 5 ~ 15mg in every liter of sewage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410024299.4A CN103771622A (en) | 2014-01-20 | 2014-01-20 | Method for removing phosphorous from domestic sewage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410024299.4A CN103771622A (en) | 2014-01-20 | 2014-01-20 | Method for removing phosphorous from domestic sewage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103771622A true CN103771622A (en) | 2014-05-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410024299.4A Withdrawn CN103771622A (en) | 2014-01-20 | 2014-01-20 | Method for removing phosphorous from domestic sewage |
Country Status (1)
| Country | Link |
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| CN (1) | CN103771622A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104045213A (en) * | 2014-06-27 | 2014-09-17 | 南京信息工程大学 | Sewage treatment method |
| CN104402146A (en) * | 2014-12-05 | 2015-03-11 | 天津工业大学 | Processing method for reducing phosphorus content in sewage |
| CN105293755A (en) * | 2015-10-13 | 2016-02-03 | 桂林市春晓环保科技有限公司 | Phosphorus removal method of domestic sewage |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19651135A1 (en) * | 1996-12-10 | 1998-06-18 | Kruse Chemie Kg | Precipitating agent for treating water or effluent to remove phosphate(s), etc. |
| CN101704606A (en) * | 2009-04-27 | 2010-05-12 | 南通泰禾化工有限公司 | Treatment method of waste water containing organic phosphorus |
| CN102627361A (en) * | 2012-03-27 | 2012-08-08 | 浙江省环境保护科学设计研究院 | Method and device for removing phosphorous from glyphosate production wastewater |
-
2014
- 2014-01-20 CN CN201410024299.4A patent/CN103771622A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19651135A1 (en) * | 1996-12-10 | 1998-06-18 | Kruse Chemie Kg | Precipitating agent for treating water or effluent to remove phosphate(s), etc. |
| CN101704606A (en) * | 2009-04-27 | 2010-05-12 | 南通泰禾化工有限公司 | Treatment method of waste water containing organic phosphorus |
| CN102627361A (en) * | 2012-03-27 | 2012-08-08 | 浙江省环境保护科学设计研究院 | Method and device for removing phosphorous from glyphosate production wastewater |
Non-Patent Citations (1)
| Title |
|---|
| 吴剑等: "MB（A2/O）处理城市污水富磷上清液的化学除磷研究", 《环境工程学报》, vol. 2, no. 2, 29 February 2008 (2008-02-29) * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104045213A (en) * | 2014-06-27 | 2014-09-17 | 南京信息工程大学 | Sewage treatment method |
| CN104045213B (en) * | 2014-06-27 | 2015-09-30 | 南京信息工程大学 | A kind for the treatment of process of sewage |
| CN104402146A (en) * | 2014-12-05 | 2015-03-11 | 天津工业大学 | Processing method for reducing phosphorus content in sewage |
| CN104402146B (en) * | 2014-12-05 | 2016-05-11 | 天津工业大学 | A kind of processing method that reduces phosphor in sewage content |
| CN105293755A (en) * | 2015-10-13 | 2016-02-03 | 桂林市春晓环保科技有限公司 | Phosphorus removal method of domestic sewage |
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Application publication date: 20140507 |