CN105366844A - Process for deep treatment of polymorphic phosphorus chemical wastewater with high concentration - Google Patents
Process for deep treatment of polymorphic phosphorus chemical wastewater with high concentration Download PDFInfo
- Publication number
- CN105366844A CN105366844A CN201510875994.6A CN201510875994A CN105366844A CN 105366844 A CN105366844 A CN 105366844A CN 201510875994 A CN201510875994 A CN 201510875994A CN 105366844 A CN105366844 A CN 105366844A
- Authority
- CN
- China
- Prior art keywords
- polymorphic
- water
- waste water
- phosphorus
- chemical industry
- Prior art date
- 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
Links
Classifications
-
- 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
- C02F1/001—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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
-
- 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
- C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
-
- 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
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
- C02F2001/425—Treatment of water, waste water, or sewage by ion-exchange using cation exchangers
Landscapes
- 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)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The present invention relates to a process for deep treatment of polymorphic phosphorus chemical wastewater with high concentration. The process comprises the following steps: 1) oxidation, precipitation and filtration: adding an oxidizing agent into phosphorus chemical wastewater, converting a phosphorus element in a low valence state into orthophosphate which is easy to precipitate, taking lime milk as a coagulant, adding a great quantity of coagulant to aerate and stir, making all phosphate ions in water to precipitate, and introducing water into a settling tank and using quartz sand to filter. 2) removing a part of calcium ions in an effluent in step 1) through cation exchange resin, carrying out treatment on the effluent sequentially through an ultrafiltration membrane and a reverse osmosis membrane, and making phosphorus concentration in the effluent lower than 2 mg/L; and 3) exchanging the reverse osmosis effluent through anion exchange resin, controlling an exchange parameter, and ensuring phosphorus concentration to meet the requirements. According to the process disclosed by the present invention, the problem of stable and standard discharge of phosphorus-containing wastewater with relatively high phosphorus concentration and complex phosphorus forms can be solved; continuous operation can be ensured; the service life of equipment is prolonged, and the investment is reduced; and the total phosphorus concentration in the effluent is less than 0.2 mg/L.
Description
Technical field
The present invention relates to sewage treatment area, specifically, is the technique of the polymorphic phosphorous chemical industry waste water of a kind of advanced treatment high density.
Background technology
The treatment process of conventional phosphorus-containing wastewater has chemical precipitation, biological process, electrolytic process, membrane processing method and ion exchange method etc.Phosphorus in waste water concentration, usually above 100mg/L, has exceeded the limit of biochemical treatment process; Chemical precipitation method, electrolytic process are mainly for the orthophosphoric acid salt being easy to precipitate; Membrane processing method and ion exchange method when processing load is excessive costly and also effect poor.For high-density phosphorus wastewater from chemical industry, because phosphoric occurrence patterns is various, be difficult to the single method of application remove, even if conventional combination process can be removed also can cause great burden to whole treatment process, make whole treatment process treatment effect reduce or cannot run continuously.
Summary of the invention
Technical problem to be solved by this invention is the technique proposing the polymorphic phosphorous chemical industry waste water of a kind of advanced treatment high density for above-mentioned prior art, adopting this technique finally to process total phosphorus concentration in water outlet can lower than 0.2mg/L, reach country current " water environment quality standard " (GB3838-2002) III class water body standard, be better than existing country " integrated wastewater discharge standard " (GB8978-2002) primary standard 0.5mg/L.
The present invention solves the technical scheme that its problem adopts: the technique of the polymorphic phosphorous chemical industry waste water of a kind of advanced treatment high density, comprises the steps:
1) oxidation precipitation filters: add oxygenant in phosphorous chemical industry waste water, the phosphoric of lower valency is converted into be easy to the ortho-phosphoric acid root precipitated, take milk of lime as coagulating agent, add a large amount of coagulating agent and aeration agitation, all precipitated by phosphate anion in water, water enters settling tank and precipitates and use quartz sand filtration;
2) membrane sepn: step 1) water outlet remove after part calcium ion through Zeo-karb, successively through ultra-filtration membrane and reverse osmosis membrane processing, make phosphoric concentration in water outlet lower than 2mg/L;
3) ion-exchange: exchanged by anionite-exchange resin by reverse osmosis water outlet, controls exchange parameter, ensures that water outlet phosphorus concentration meets the requirements.
By such scheme, step 1) in oxygenant be clorox, in its available chlorine content and waste water, total phosphorus mass ratio is 0.1:1 ~ 0.2:1.
By such scheme, step 1) in coagulating agent be milk of lime, and add pH >=10 to water.
By such scheme, step 1) in water outlet pH be alkalescence.
By such scheme, step 2) in ultra-filtration membrane operating pressure be 2.5 ~ 3.0bar.
By such scheme, step 2) in reverse osmosis membrane operating pressure be 17 ~ 20bar.
By such scheme, step 3) in exchange parameter be anionite-exchange resin time 30 ~ 60min.
In usual wastewater from chemical industry, most of phosphorus exists with ortho-phosphoric acid root form, and the ortho-phosphoric acid root in water reacts to generate with calcium ion in the basic conditions and precipitates, and the phosphoric acid salt of other forms is not easily separated owing to being difficult to form precipitation from water.In above-mentioned technique, be first oxygenant with clorox, the phosphoric of lower valency be converted into be easy to the ortho-phosphoric acid root precipitated, then with cheap milk of lime for coagulating agent, remove ortho-phosphoric acid root in water, reduce the processing load of subsequent handling; Then by membrane separation technique, the phosphoric of other forms of the overwhelming majority in waste water is separated from water; Finally do advanced treatment with the water that anionite-exchange resin is lower to phosphorus concentration, ensure that water outlet phosphorus concentration is up to standard.For ensureing that ortho-phosphoric acid root precipitates completely, add excessive milk of lime, until pH >=10.Experiment proves that alkaline environment is conducive to the removal of membrane separation plant to phosphorus, so after the precipitation stage without the need to carrying out pH readjustment, but needing to add calcium ion concn in resin cation exchange unit reduction water, avoiding pipeline scale.
Compared with prior art, Technology of the present invention, can reach following effect:
1, can solve total phosphorus concentration higher (>=100mg/L), phosphorus occurrence patterns complexity phosphorus-containing wastewater stably reaching standard discharge problem;
2, can run continuously;
3, extension device work-ing life, save and drop into;
4, in water outlet total phosphorus concentration lower than 0.2mg/L.
Embodiment
In order to more fully understand this invention, be described further below in conjunction with embodiment.
Embodiment 1: polymorphic phosphorous chemical industry waste water, total phosphorus concentration is 396mg/L, containing phosphoric acid salt and poly-phosphate.In waste water, add the chlorine bleach liquor of 10%, dosage is 4mL/L, adds the milk of lime of 10%, dosage is 18mL/L, and adds pH >=10 to water, through aeration coagulating sedimentation, precipitation water outlet ortho-phosphoric acid root concentration is 0.17mg/L, and total phosphorus concentration is 145.2mg/L.Precipitation water outlet by sand filtration, Zeo-karb remove part calcium ion laggard enter ultrafiltration and reverse osmosis membrane separation system, ultra-filtration membrane operating pressure is 2.7, reverse osmosis membrane operating pressure 18.6.With this understanding, reverse osmosis water outlet total phosphorus concentration is 1.14mg/L.This water outlet is again through resin anion(R.A) process, and the time is 30 ~ 60min, and in final outflow water, total phosphorus concentration is 0.11mg/L.
Embodiment 2: polymorphic phosphorous chemical industry waste water, total phosphorus concentration is 512mg/L, containing phosphoric acid salt and poly-phosphate.In waste water, add the chlorine bleach liquor of 10%, dosage is 4mL/L, adds the milk of lime of 10%, dosage is 18mL/L, and adds pH >=10 to water, through aeration coagulating sedimentation, precipitation water outlet ortho-phosphoric acid root concentration is 2.28mg/L, and total phosphorus concentration is 116.9mg/L.Precipitation water outlet enters ultra filtering reverse osmosis film separating system by sand filtration, Zeo-karb, and ultra-filtration membrane operating pressure is 2.8, reverse osmosis membrane operating pressure 19.2.With this understanding, reverse osmosis water outlet total phosphorus concentration is 0.94mg/L.This water outlet is again through resin anion(R.A) process, and the time is 30 ~ 60min, and in final outflow water, total phosphorus concentration is 0.09mg/L.
Embodiment 3: polymorphic phosphorous chemical industry waste water, total phosphorus concentration is 623mg/L, containing phosphoric acid salt and poly-phosphate.In waste water, add the chlorine bleach liquor of 10%, dosage is 4mL/L, adds the milk of lime of 10%, dosage is 20mL/L, and adds pH >=10 to water, through aeration coagulating sedimentation, precipitation water outlet ortho-phosphoric acid root concentration is 1.76mg/L, and total phosphorus concentration is 162.1mg/L.Precipitation water outlet enters ultra filtering reverse osmosis film separating system by sand filtration, Zeo-karb, and ultra-filtration membrane operating pressure is 3.0, reverse osmosis membrane operating pressure 19.8.With this understanding, reverse osmosis water outlet total phosphorus concentration is 1.81mg/L.This water outlet is again through resin anion(R.A) process, and the time is 30 ~ 60min, and in final outflow water, total phosphorus concentration is 0.18mg/L.
Claims (7)
1. a technique for the polymorphic phosphorous chemical industry waste water of advanced treatment high density, comprises the steps:
1) oxidation precipitation filters: add oxygenant in phosphorous chemical industry waste water, the phosphoric of lower valency is converted into be easy to the ortho-phosphoric acid root precipitated, take milk of lime as coagulating agent, add a large amount of coagulating agent and aeration agitation, all precipitated by phosphate anion in water, water enters settling tank and precipitates and use quartz sand filtration;
2) membrane sepn: step 1) water outlet remove after part calcium ion through Zeo-karb, successively through ultra-filtration membrane and reverse osmosis membrane processing, make phosphoric concentration in water outlet lower than 2mg/L;
3) ion-exchange: exchanged by anionite-exchange resin by reverse osmosis water outlet, controls exchange parameter, ensures that water outlet phosphorus concentration meets the requirements.
2., by the technique of the polymorphic phosphorous chemical industry waste water of advanced treatment high density according to claim 1, it is characterized in that step 1) in oxygenant be clorox, in its available chlorine content and waste water, total phosphorus mass ratio is 0.1:1 ~ 0.2:1.
3., by the technique of the polymorphic phosphorous chemical industry waste water of advanced treatment high density according to claim 1, it is characterized in that step 1) in coagulating agent be milk of lime, and add pH >=10 to water.
4., by the technique of the polymorphic phosphorous chemical industry waste water of advanced treatment high density according to claim 1, it is characterized in that step 1) in water outlet pH be alkalescence.
5., by the technique of the polymorphic phosphorous chemical industry waste water of advanced treatment high density according to claim 1, it is characterized in that step 2) in ultra-filtration membrane operating pressure be 2.5 ~ 3.0bar.
6., by the technique of the polymorphic phosphorous chemical industry waste water of advanced treatment high density according to claim 1, it is characterized in that step 2) in reverse osmosis membrane operating pressure be 17 ~ 20bar.
7., by the technique of the polymorphic phosphorous chemical industry waste water of advanced treatment high density according to claim 1, it is characterized in that step 3) in exchange parameter be anionite-exchange resin time 30 ~ 60min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510875994.6A CN105366844A (en) | 2015-12-02 | 2015-12-02 | Process for deep treatment of polymorphic phosphorus chemical wastewater with high concentration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510875994.6A CN105366844A (en) | 2015-12-02 | 2015-12-02 | Process for deep treatment of polymorphic phosphorus chemical wastewater with high concentration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105366844A true CN105366844A (en) | 2016-03-02 |
Family
ID=55369555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510875994.6A Pending CN105366844A (en) | 2015-12-02 | 2015-12-02 | Process for deep treatment of polymorphic phosphorus chemical wastewater with high concentration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105366844A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114195334A (en) * | 2022-01-06 | 2022-03-18 | 重庆市三峡鱼复排水有限责任公司 | Method for preventing high-concentration phosphorus-containing wastewater from impacting sewage treatment system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101774712A (en) * | 2010-01-27 | 2010-07-14 | 巨化集团公司 | Method for removing low-valence inorganic phosphorus in waste water |
| CN103496805A (en) * | 2013-09-25 | 2014-01-08 | 杭州天创环境科技股份有限公司 | Phosphorus-standard emission treatment method of agrochemical wastewater based on ultrafiltration-reverse osmosis |
| CN204369710U (en) * | 2015-01-12 | 2015-06-03 | 青岛国标环保有限公司 | Treatment of Phosphorus Containing Waste Water system |
-
2015
- 2015-12-02 CN CN201510875994.6A patent/CN105366844A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101774712A (en) * | 2010-01-27 | 2010-07-14 | 巨化集团公司 | Method for removing low-valence inorganic phosphorus in waste water |
| CN103496805A (en) * | 2013-09-25 | 2014-01-08 | 杭州天创环境科技股份有限公司 | Phosphorus-standard emission treatment method of agrochemical wastewater based on ultrafiltration-reverse osmosis |
| CN204369710U (en) * | 2015-01-12 | 2015-06-03 | 青岛国标环保有限公司 | Treatment of Phosphorus Containing Waste Water system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114195334A (en) * | 2022-01-06 | 2022-03-18 | 重庆市三峡鱼复排水有限责任公司 | Method for preventing high-concentration phosphorus-containing wastewater from impacting sewage treatment system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102107963B (en) | Method for treating acid-washing wastewater and metallic ions in iron and steel industry | |
| US20070151932A1 (en) | Removal of phosphorous from wastewater | |
| CN106745613B (en) | A kind of processing method of organic phosphine precipitating reagent and the waste water of organic phosphine containing high concentration | |
| CN105084589A (en) | Treatment method and system for wet magnesium desulphurization wastewater | |
| WO2015198438A1 (en) | Method and device for treating fluoride-containing water | |
| CN102145946B (en) | Method for treating trace amount of cadmium in wastewater by chelation, coagulation and ultrafiltration combination | |
| JP2002316173A (en) | Method for treating wastewater containing arsenic and hydrogen peroxide | |
| CN110713269A (en) | Acid wastewater treatment process and system in titanium dioxide production by sulfuric acid method | |
| JP5692278B2 (en) | Method and apparatus for treating fluoride-containing water | |
| RU2593877C2 (en) | Method for cleaning discharge fluids from phosphates and sulphates | |
| CN105366844A (en) | Process for deep treatment of polymorphic phosphorus chemical wastewater with high concentration | |
| JPH02157090A (en) | Treatment of heavy metal-containing waste water | |
| CN107698059A (en) | A kind of phosphorus-containing wastewater contamination precipitation processing method | |
| CN112573720A (en) | Thermal power plant desulfurization wastewater zero-discharge system and method | |
| CN204529534U (en) | The treatment system of a kind of lead, Acid Production Wastewater from Zn Smelting Fume | |
| JP5217883B2 (en) | Method and apparatus for treating phosphoric acid, nitric acid and water containing organic acid | |
| CN108483724B (en) | Electroplating wastewater three-level dosing treatment device and method thereof | |
| CN103848512B (en) | A kind of based on KMnO 4the change gold waste water of advanced oxidation removes total phosphorus method and device thereof | |
| JP6078345B2 (en) | Wastewater treatment method and apparatus | |
| CN109626638A (en) | A kind for the treatment of process of high P content waste water Zero-discharge reuse | |
| CN204569602U (en) | Phosphorized waste water treatment system | |
| JP2006263553A (en) | Method for treating anionic organic material-containing waste water | |
| JP2007090266A (en) | Water treatment method and water treatment apparatus | |
| JP7149129B2 (en) | Silica-containing water treatment method and treatment apparatus | |
| JP7137393B2 (en) | Method and apparatus for treating water containing silica/hardness components |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160302 |