CN103159341A - Treatment process of high-phosphorus sewage - Google Patents
Treatment process of high-phosphorus sewage Download PDFInfo
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- CN103159341A CN103159341A CN2011104242468A CN201110424246A CN103159341A CN 103159341 A CN103159341 A CN 103159341A CN 2011104242468 A CN2011104242468 A CN 2011104242468A CN 201110424246 A CN201110424246 A CN 201110424246A CN 103159341 A CN103159341 A CN 103159341A
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Abstract
The invention discloses a treatment process of high-phosphorus sewage. The treatment process includes the steps of adjusting a potential of hydrogen (PH) value to 4 to 6 through PH conditioning agent and obtaining orthophosphoric acid root ions through oxidizing reaction after the phosphorus sewage is evenly mixed with oxidant, adjusting the PH value to 7 to 9 through the PH conditioning agent, generating sediment from metal ions containing in orthophosphoric acid root and the oxidant and removing the sediment. The treatment process of the high-phosphorus sewage has the advantages of being simple in steps, strong in operability, high in reaction efficiency, strong in treatment ability and buffering ability and capable of greatly reducing treatment cost compared with the prior art.
Description
Technical field
The present invention relates to a kind of high treatment of Phosphorus Containing Waste Water technique.
Background technology
The phosphorus that is discharged in the lake derives among sanitary sewage, factory and livestock industry waste water, mountain forest arable land fertilizer loss and rainfall snowfall mostly.
Phosphorus is the crucial nutritive substance that causes body eutrophication.Body eutrophication can cause algae overgrowing in water, and then the water body oxygen level is sharply descended, and affects the hydrobiological existence such as fish.Body eutrophication in the lake, reservoir shows as " wawter bloom ".Main harm is that water transparency descends, and the reoxygenation ability weakens, and the kind of fish particularly has the fish of economic worth to reduce, and after algae death, decomposition will consume dissolved oxygen.Not enough and some poisonous algae of dissolved oxygen also can cause fish kills.The organism that can't decompose will sink under water and cause lake, storehouse day by day to be deposited shoaling, accelerated the aging of lake.China inland and urban lakes, Reservoir Eutrophication phenomenon are general, and situation is quite serious.The pollution in Dian Chi, Chaohu and three large famous lakes, Taihu Lake is especially noticeable.
Body eutrophication shows as " red tide " in the ocean, the abnormal and water quality deterioration phenomenon of the water colour that namely in the waters, the breeding of some planktonic organisms causes.In the ocean, a certain or several planktonic organisms explosive breeding or highly gathering under the certain environment condition, cause discoloured water, affects and endanger other marine organisms normal existence, causes disastrous marine ecology unusual phenomenon.
Normally used phosphorus removing method mainly comprises chemical method, biological process and absorption method three major types.
Biological process dephosphorization process initial cost is larger, and operation stability is poor, and dependency is strong, and organic content is lower in waste water, or phosphorus content is when surpassing 10mg/L, and water outlet is difficult to satisfy the emission standard of phosphorus, at this moment, need to carry out the secondary dephosphorization to water outlet toward contact and process.
The sorbent material of absorption method dephosphorization mainly contains activated alumina and gac etc., but the defective such as this technique exists that the sorbent material loading capacity is limited, the adsorbent reactivation expense is high, the regeneration difficulty is large.Therefore be necessary to work out a kind of strong adaptability, treatment effect is good and the economic serviceability dephosphorization process.
At present chemical method dephosphorization has polymerize aluminum chloride, the bodied ferric sulfate precipitator method, but this method is not suitable for processing high-concentration phosphorus-containing wastewater, when waste water contains phosphorus concentration greater than 10mg/L (with PO
4 3-Meter), waste water total phosphorous after treatment is more difficult reaches the level less than 1.5mg/L in P, and in treating processes, the sludge quantity of generation is larger, and this present situation needs to be resolved hurrily.
Summary of the invention
Technical problem to be solved by this invention is to have overcome the defective that in biological phosphate-eliminating, conventional chemical dephosphorization and absorption method dephosphorization process, phosphor-removing effect is undesirable, Technological adaptability is poor, expense is higher or sludge quantity is large, provide a kind for the treatment of effect good, initial cost is economized, and can process the simple and practical treatment process of high-concentration phosphorus-containing wastewater.
After treatment of Phosphorus Containing Waste Water technique of the present invention comprises the steps: phosphorus-containing wastewater and oxygenant are mixed, carry out oxidizing reaction through pH adjusting agent adjustment pH value to 4～6 and get positive phosphorus acid ion, with pH adjusting agent, the pH value is adjusted to 7～9 again and make metal ion contained in ortho-phosphoric acid root and oxygenant generate precipitation, remove precipitation and get final product.
In the present invention, described phosphorus-containing wastewater is the conventional described high-concentration phosphorus-containing wastewater in this area, generally with PO
4 3-Meter total phosphorus value is that about 80mg/L～500mg/L, the pH value is less than 7.
In the present invention, described oxygenant is the conventional use in this area, and better is iron(ic) chloride and/or ferric sulfate, and better is iron(ic) chloride.
Wherein, the consumption of described oxygenant is better be with phosphorus-containing wastewater in contained total phosphorus (with PO
4 3-Meter) concentration ratio 3: 1～10: 1, better is 5: 1.
Wherein, that the reaction times of described oxidizing reaction is better is 30min～90min, and that better is 45min.Described oxidizing reaction can be carried out in the reaction tank of whipping appts.
In the present invention, described pH adjusting agent can be the conventional use in this area, and that better is Na
2CO
3And/or NaOH, that better is Na
2CO
3
In the present invention, that in described ortho-phosphoric acid root and oxygenant, the time of contained metal ion generation precipitation is better is 0.5～1h.
In the present invention, the use equipment that described treatment of Phosphorus Containing Waste Water technique relates to is the conventional use equipment in this area, and better advancing afterwards coagulation basin precipitates in order phosphorus-containing wastewater is carried out oxidizing reaction in the oxidizing reaction pond, advances afterwards settling tank and removes precipitation and get final product.Wherein, described pH regulator can carry out in coagulation basin, settling tank, concrete better can regulating in the water inlet.
In the present invention, in described ortho-phosphoric acid root and oxygenant, contained metal ion generates precipitation by this area routine, and better carries out in settling tank, and mud discharging device is removed precipitation bottom settling tank.
Agents useful for same of the present invention and raw material equal commercially available getting except specified otherwise.
In the present invention, on the basis that meets this area general knowledge, each above-mentioned technical characterictic optimum condition can arbitrary combination obtain preferred embodiments.
Positive progressive effect of the present invention is: treatment of Phosphorus Containing Waste Water processing step of the present invention is simple, workable, reaction efficiency is high, it is less that processing power, surge capability reach by force sludge quantity, processing cost is greatly reduced than prior art, and in waste water after treatment, total phosphorus satisfies the requirement of integrated wastewater discharge standard (GB8978-1996) phosphoric acid salt first discharge standard (in P)≤0.5mg/L fully.
Description of drawings
Fig. 1 is the schematic flow sheet of embodiment 1 treatment of Phosphorus Containing Waste Water technique.
Embodiment
Mode below by embodiment further illustrates the present invention, but does not therefore limit the present invention among described scope of embodiments.
In following embodiment, the detection method of total phosphorus is all carried out by national standard: examination criteria is the ammonium molybdate spectrophotometry of GB11893-89.
Embodiment 1
The pre-film wastewater treatment of cool circulation water system between the oxyen manutactory, total phosphorus 120mg/L, pH are 6.8.
The present embodiment treatment of Phosphorus Containing Waste Water process flow diagram (can referring to accompanying drawing 1):
(1) go out to add the FeCl of 900mg/L at oxidizing reaction pond water-in
3, and add Na
2CO
3The pH value is adjusted to 5.8, by current mix and reaction tank in after whipping appts mixes medicament, reaction 30min;
(2) will deliver to coagulation basin by lift pump through the waste water of oxide treatment, add Na at the coagulation basin water-in
2CO
3, adjust pH value 8.8, by whipping appts, medicament and water are mixed, the coagulation basin hydraulic detention time is 15min;
(3) after coagulating, by lift pump, water is supplied to settling tank settling tank hydraulic detention time 30min.
Get supernatant liquor and detect, total phosphorus (take P) is 0.2mg/L, and the pH value is 8.9, satisfies the requirement of integrated wastewater discharge standard (GB8978-1996) phosphoric acid salt first discharge standard (in P)≤0.5mg/L.
Embodiment 2
Factory's treatment of Phosphorus Containing Waste Water, total phosphorus 346mg/L, pH value 2.3.
(1) drop into 1000mg/L ferric sulfate at equalizing tank, and add Na
2CO
3The pH value is adjusted to 4.2, reaction 90min;
(2) will deliver to settling tank by lift pump through the waste water of oxide treatment, add Na at the settling tank water-in
2CO
3The pH value is adjusted to 7.5, settling tank hydraulic detention time 30min;
(3) get the water outlet of settling tank overflow weir.
Monitoring water outlet total phosphorus (in P) 0.48mg/L satisfies the requirement of integrated wastewater discharge standard GB8978-1996 phosphoric acid salt first discharge standard (in P)≤0.5mg/L.
Embodiment 3
Factory's treatment of Phosphorus Containing Waste Water, total phosphorus 80mg/L, pH value 6.9.
(1) drop into 240mg/L ferric sulfate at equalizing tank, and add NaOH pH value is adjusted to 6.0, react 45min;
(2) will deliver to settling tank by lift pump through the waste water of oxide treatment, add Na at the settling tank water-in
2CO
3The pH value is adjusted to 9, settling tank hydraulic detention time 30min;
(3) get the water outlet of settling tank overflow weir.
Monitoring water outlet total phosphorus (in P) 0.15mg/L satisfies the requirement of integrated wastewater discharge standard GB8978-1996 phosphoric acid salt first discharge standard (in P)≤0.5mg/L.
Embodiment 4
Factory's treatment of Phosphorus Containing Waste Water, total phosphorus 500mg/L, pH value 2.1.
(1) drop into 5000mg/L ferric sulfate at equalizing tank, and add Na
2CO
3The pH value is adjusted to 4, reaction 90min;
(2) will deliver to settling tank by lift pump through the waste water of oxide treatment, add Na at the settling tank water-in
2CO
3The pH value is adjusted to 7.3, settling tank hydraulic detention time 60min;
(3) get the water outlet of settling tank overflow weir.
Monitoring water outlet total phosphorus (in P) 0.48mg/L satisfies the requirement of integrated wastewater discharge standard GB8978-1996 phosphoric acid salt first discharge standard (in P)≤0.5mg/L.
Claims (10)
1. treatment of Phosphorus Containing Waste Water technique, it is characterized in that, after it comprises the steps: phosphorus-containing wastewater and oxygenant are mixed, carry out oxidizing reaction through pH adjusting agent adjustment pH value to 4～6 and get positive phosphorus acid ion, with pH adjusting agent, the pH value is adjusted to 7～9 again and make metal ion contained in ortho-phosphoric acid root and oxygenant generate precipitation, remove precipitation and get final product.
2. treatment of Phosphorus Containing Waste Water technique as claimed in claim 1, is characterized in that, described phosphorus-containing wastewater is with PO
4 3-Meter total phosphorus value is 80mg/L～500mg/L, and the pH value is less than 7.
3. treatment of Phosphorus Containing Waste Water technique as claimed in claim 1, is characterized in that, described oxygenant is iron(ic) chloride and/or ferric sulfate.
4. treatment of Phosphorus Containing Waste Water technique as claimed in claim 1, is characterized in that, the consumption of described oxygenant be with phosphorus-containing wastewater in contained with PO
4 3-The concentration ratio of meter total phosphorus 3: 1～10: 1.
5. treatment of Phosphorus Containing Waste Water technique as claimed in claim 4, is characterized in that, the consumption of described oxygenant be with phosphorus-containing wastewater in contained with PO
4 3-The concentration ratio of meter total phosphorus is 5: 1.
6. treatment of Phosphorus Containing Waste Water technique as claimed in claim 1, is characterized in that, the reaction times of described oxidizing reaction is 30min～90min.
7. treatment of Phosphorus Containing Waste Water technique as claimed in claim 6, is characterized in that, the reaction times of described oxidizing reaction is 45min.
8. treatment of Phosphorus Containing Waste Water technique as claimed in claim 1, is characterized in that, described pH adjusting agent is Na
2CO
3And/or NaOH.
9. treatment of Phosphorus Containing Waste Water technique as claimed in claim 1, is characterized in that, in described ortho-phosphoric acid root and oxygenant, the time of contained metal ion generation precipitation is 0.5～1h.
10. treatment of Phosphorus Containing Waste Water technique as claimed in claim 1, is characterized in that, described treatment of Phosphorus Containing Waste Water technique is for carrying out oxidizing reaction with phosphorus-containing wastewater in the oxidizing reaction pond, and advancing afterwards coagulation basin precipitates, and advances afterwards settling tank and remove precipitation and get final product.
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| CN2011104242468A CN103159341A (en) | 2011-12-16 | 2011-12-16 | Treatment process of high-phosphorus sewage |
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|---|---|---|---|
| CN2011104242468A CN103159341A (en) | 2011-12-16 | 2011-12-16 | Treatment process of high-phosphorus sewage |
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| CN103159341A true CN103159341A (en) | 2013-06-19 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104445469A (en) * | 2014-12-18 | 2015-03-25 | 石泰山 | Method for treating phosphorus/phosphine-containing electroplating wastewater by utilizing electroplating sludge |
| CN104894374A (en) * | 2015-06-05 | 2015-09-09 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for carrying out phosphorus removal on acidic vanadium-containing solution |
| CN105731690A (en) * | 2016-03-14 | 2016-07-06 | 三峡大学 | Method of converting organic phosphorus in phosphorus wastewater into inorganic phosphorus |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1086498A (en) * | 1993-10-03 | 1994-05-11 | 周定才 | Yellow phosphorus containing waste water treatment by multi-stage oxidizing and settling |
| CN101302053A (en) * | 2007-05-11 | 2008-11-12 | 湖北大学 | Phosphorus removing method for municipal sewage plant |
| CN101428922A (en) * | 2008-12-05 | 2009-05-13 | 华中科技大学 | Method for dephosphorization from sewage water |
| CN102139974A (en) * | 2011-02-21 | 2011-08-03 | 李开明 | Treatment method of phosphorus-containing waste water |
-
2011
- 2011-12-16 CN CN2011104242468A patent/CN103159341A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1086498A (en) * | 1993-10-03 | 1994-05-11 | 周定才 | Yellow phosphorus containing waste water treatment by multi-stage oxidizing and settling |
| CN101302053A (en) * | 2007-05-11 | 2008-11-12 | 湖北大学 | Phosphorus removing method for municipal sewage plant |
| CN101428922A (en) * | 2008-12-05 | 2009-05-13 | 华中科技大学 | Method for dephosphorization from sewage water |
| CN102139974A (en) * | 2011-02-21 | 2011-08-03 | 李开明 | Treatment method of phosphorus-containing waste water |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104445469A (en) * | 2014-12-18 | 2015-03-25 | 石泰山 | Method for treating phosphorus/phosphine-containing electroplating wastewater by utilizing electroplating sludge |
| CN104894374A (en) * | 2015-06-05 | 2015-09-09 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for carrying out phosphorus removal on acidic vanadium-containing solution |
| CN105731690A (en) * | 2016-03-14 | 2016-07-06 | 三峡大学 | Method of converting organic phosphorus in phosphorus wastewater into inorganic phosphorus |
| CN105731690B (en) * | 2016-03-14 | 2018-04-10 | 三峡大学 | Organophosphor is converted to the method for Phos in a kind of phosphorus-containing wastewater |
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Free format text: FORMER OWNER: SHANGHAI EMPEROR OF CLEANING TECH. CO., LTD. Effective date: 20150205 Owner name: SHANGHAI EMPEROR OF CLEANING TECH. CO., LTD. Free format text: FORMER OWNER: WANG WEI Effective date: 20150205 |
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Effective date of registration: 20150205 Address after: 200437 5F, B, Bai Shu Building, No. 1230, Bei Bei Road, Hongkou District, Shanghai, Zhongshan Applicant after: Shanghai Emperor of Cleaning Tech Co., Ltd. Address before: 200437 5F, B, Bai Shu Building, No. 1230, Bei Bei Road, Hongkou District, Shanghai, Zhongshan Applicant before: Wang Wei Applicant before: Shanghai Emperor of Cleaning Tech Co., Ltd. |
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Application publication date: 20130619 |