CN114249452A - Method for recovering phosphoric acid from quinacridone production wastewater - Google Patents
Method for recovering phosphoric acid from quinacridone production wastewater Download PDFInfo
- Publication number
- CN114249452A CN114249452A CN202011021803.7A CN202011021803A CN114249452A CN 114249452 A CN114249452 A CN 114249452A CN 202011021803 A CN202011021803 A CN 202011021803A CN 114249452 A CN114249452 A CN 114249452A
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- Prior art keywords
- phosphoric acid
- stirring
- production wastewater
- filtering
- chemical reaction
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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
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/16—Oxyacids of phosphorus; Salts thereof
- C01B25/18—Phosphoric acid
- C01B25/234—Purification; Stabilisation; Concentration
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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
- C02F1/00—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
- C02F2001/007—Processes including a sedimentation step
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Fertilizers (AREA)
Abstract
The invention discloses a method for recovering phosphoric acid from quinacridone production wastewater, which comprises the following steps: primary stirring; primary filtration; carrying out primary chemical reaction; carrying out secondary chemical reaction; and drying and analyzing the secondary chemical reaction to obtain the phosphoric acid. The invention has the following advantages: the method is carried out at normal temperature and normal pressure, the quantity of the produced and recovered fertilizer phosphorus, total phosphorus and available phosphorus are good in stability, and the recovery rate is high; the recovered waste water contains a small amount of phosphoric acid which can be recycled, the Ca (OH)2 suspension is prepared, secondary pollution is not caused, closed circulation is realized, waste water is not discharged, resources are utilized, comprehensive treatment is carried out, wastes are changed into valuables, the environment is protected, and agriculture is supported; the process steps are simple and easy to realize, and the produced phosphoric acid does not contain toxic elements and can be used as feed.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of recycling of quinacridone production wastewater, in particular to a method for recovering phosphoric acid from quinacridone production wastewater.
[ background of the invention ]
At present, phosphoric acid-containing wastewater discharged in the production process of quinacridone high-grade organic pigments runs off, so that serious pollution is caused on one hand, and effective components of the wastewater are not comprehensively utilized, so that resources are wasted.
The invention aims to provide a method for recovering phosphoric acid from quinacridone production wastewater. The phosphate fertilizer product is prepared by recycling the phosphoric acid, the fertilizer efficiency of the phosphate fertilizer exceeds or is equivalent to that of other phosphate fertilizers, and the waste water is recycled for closed circulation.
[ summary of the invention ]
The present invention aims to provide a method for recovering phosphoric acid from quinacridone production wastewater, which can solve the technical problems involved in the background art.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a method for recovering phosphoric acid from quinacridone production wastewater comprises the following steps:
stirring for the first time, inputting the plant ash and the quinacridone production wastewater into a stirring tank according to the mass ratio of 1:3-4, and stirring to obtain a mixed solution, wherein the stirring speed is 60-80 circles/minute and lasts for 30-40 minutes;
filtering for the first time, filtering the mixed solution obtained after the first stirring by using a screen separator to obtain filtered liquid, and filtering out plant ash and solid impurities;
precipitating, precipitating the filtered liquid obtained after primary filtration, and extracting supernatant;
performing primary chemical reaction, adding Ca (OH)2 and an auxiliary agent into the obtained supernatant, performing precipitation separation and spin-drying after the reaction, and obtaining filtrate;
secondary chemical reaction, adding Ca (OH)2 and auxiliary agent into the filtrate again;
and drying and analyzing the secondary chemical reaction to obtain the phosphoric acid.
Preferably: in the primary stirring step, the temperature in the stirring tank is 80-120 ℃.
Preferably: in the primary filtering step, the reverse osmosis membrane is used for filtering, and the filtering is carried out under the environment of 4-5MPa of pressure.
Preferably: the auxiliary agent is calcium monohydrogen phosphate.
Compared with the prior art, the method for recovering phosphoric acid from quinacridone production wastewater provided by the invention has the following advantages:
1. the method is carried out at normal temperature and normal pressure, the quantity of the produced and recovered fertilizer phosphorus, total phosphorus and available phosphorus are good in stability, and the recovery rate is high;
2. the recovered waste water contains a small amount of phosphoric acid which can be recycled, the Ca (OH)2 suspension is prepared, secondary pollution is not caused, closed circulation is realized, waste water is not discharged, resources are utilized, comprehensive treatment is carried out, wastes are changed into valuables, the environment is protected, and agriculture is supported;
3. the process steps are simple and easy to realize, and the produced phosphoric acid does not contain toxic elements and can be used as feed.
[ detailed description ] embodiments
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a method for recovering phosphoric acid from quinacridone production wastewater, which comprises the following steps:
stirring for the first time, inputting the plant ash and the quinacridone production wastewater into a stirring tank according to the mass ratio of 1:3-4, and stirring to obtain a mixed solution, wherein the stirring speed is 60-80 circles/minute and lasts for 30-40 minutes;
it is further noted that the temperature in the stirred tank is 80-120 ℃.
Filtering for the first time, filtering the mixed solution obtained after the first stirring by using a screen separator to obtain filtered liquid, and filtering out plant ash and solid impurities;
it is further noted that the filtration by the reverse osmosis membrane is performed under the pressure of 4-5 MPa.
Precipitating, precipitating the filtered liquid obtained after primary filtration, and extracting supernatant;
performing primary chemical reaction, adding Ca (OH)2 and an auxiliary agent into the obtained supernatant, performing precipitation separation and spin-drying after the reaction, and obtaining filtrate;
secondary chemical reaction, adding Ca (OH)2 and auxiliary agent into the filtrate again;
it is further noted that the auxiliary agent is calcium monohydrogen phosphate.
And drying and analyzing the secondary chemical reaction to obtain the phosphoric acid.
Compared with the prior art, the method for recovering phosphoric acid from quinacridone production wastewater provided by the invention has the following advantages:
1. the method is carried out at normal temperature and normal pressure, the quantity of the produced and recovered fertilizer phosphorus, total phosphorus and available phosphorus are good in stability, and the recovery rate is high;
2. the recovered waste water contains a small amount of phosphoric acid which can be recycled, the Ca (OH)2 suspension is prepared, secondary pollution is not caused, closed circulation is realized, waste water is not discharged, resources are utilized, comprehensive treatment is carried out, wastes are changed into valuables, the environment is protected, and agriculture is supported;
3. the process steps are simple and easy to realize, and the produced phosphoric acid does not contain toxic elements and can be used as feed.
While embodiments of the invention have been disclosed above, it is not limited to the applications set forth in the description and embodiments, which are fully applicable to various fields of endeavor for which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described without departing from the generic concept as defined by the claims and the equivalents thereof.
Claims (4)
1. A method for recovering phosphoric acid from quinacridone production wastewater is characterized by comprising the following steps:
stirring for the first time, inputting the plant ash and the quinacridone production wastewater into a stirring tank according to the mass ratio of 1:3-4, and stirring to obtain a mixed solution, wherein the stirring speed is 60-80 circles/minute and lasts for 30-40 minutes;
filtering for the first time, filtering the mixed solution obtained after the first stirring by using a screen separator to obtain filtered liquid, and filtering out plant ash and solid impurities;
precipitating, precipitating the filtered liquid obtained after primary filtration, and extracting supernatant;
performing primary chemical reaction, adding Ca (OH)2 and an auxiliary agent into the obtained supernatant, performing precipitation separation and spin-drying after the reaction, and obtaining filtrate;
secondary chemical reaction, adding Ca (OH)2 and auxiliary agent into the filtrate again;
and drying and analyzing the secondary chemical reaction to obtain the phosphoric acid.
2. A process for recovering phosphoric acid from quinacridone production wastewater according to claim 1, characterized in that: in the primary stirring step, the temperature in the stirring tank is 80-120 ℃.
3. A process for recovering phosphoric acid from quinacridone production wastewater according to claim 1, characterized in that: in the primary filtering step, the reverse osmosis membrane is used for filtering, and the filtering is carried out under the environment of 4-5MPa of pressure.
4. A process for recovering phosphoric acid from quinacridone production wastewater according to claim 1, characterized in that: the auxiliary agent is calcium monohydrogen phosphate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011021803.7A CN114249452A (en) | 2020-09-25 | 2020-09-25 | Method for recovering phosphoric acid from quinacridone production wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011021803.7A CN114249452A (en) | 2020-09-25 | 2020-09-25 | Method for recovering phosphoric acid from quinacridone production wastewater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114249452A true CN114249452A (en) | 2022-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011021803.7A Pending CN114249452A (en) | 2020-09-25 | 2020-09-25 | Method for recovering phosphoric acid from quinacridone production wastewater |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4988489A (en) * | 1989-01-25 | 1991-01-29 | Todd Lanny E | Recovery of phosphorus values from waste phosphoric acid liquors |
| CN1212962A (en) * | 1997-09-29 | 1999-04-07 | 湘潭市环境保护科学研究所 | Method for producing calcium hydrogen phosphate by recovery and using waste water containing phosphate of quinacridineone serial pigment |
| CN101456547A (en) * | 2008-12-19 | 2009-06-17 | 深圳市危险废物处理站有限公司 | Comprehensive utilization method of chemical polishing waste phosphoric acid |
| CN101864453A (en) * | 2009-04-14 | 2010-10-20 | 李泽唐 | Pool-stove-kang-kitchen-toilet five-in-one biogas production method for rural houses in cold areas |
| US20110309017A1 (en) * | 2010-04-13 | 2011-12-22 | Molycorp Minerals, Llc | Methods and devices for enhancing contaminant removal by rare earths |
| CN102633384A (en) * | 2012-04-20 | 2012-08-15 | 瓮福（集团）有限责任公司 | Method for preparing phosphoric acid by recycling phosphorus from phosphorus-containing wastewater |
| JP2013043800A (en) * | 2011-08-24 | 2013-03-04 | Kazumi Shibata | Liquid fertilizer and method for producing the same |
| CN103964602A (en) * | 2013-02-06 | 2014-08-06 | 成都天马微电子有限公司 | Phosphorus-containing wastewater treatment system and treatment method |
| CN106276837A (en) * | 2016-08-15 | 2017-01-04 | 东江环保股份有限公司 | Phosphoric acid waste liquid prepares the method for calcium hydrophosphate fodder |
| CN206457344U (en) * | 2017-01-22 | 2017-09-01 | 宁波公源生态建设有限公司 | A kind of Simple sewage processing neutralizes device |
| CN110885122A (en) * | 2019-11-30 | 2020-03-17 | 怀化恒一颜料化学有限公司 | Process for treating waste water from quinacridone production |
-
2020
- 2020-09-25 CN CN202011021803.7A patent/CN114249452A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4988489A (en) * | 1989-01-25 | 1991-01-29 | Todd Lanny E | Recovery of phosphorus values from waste phosphoric acid liquors |
| CN1212962A (en) * | 1997-09-29 | 1999-04-07 | 湘潭市环境保护科学研究所 | Method for producing calcium hydrogen phosphate by recovery and using waste water containing phosphate of quinacridineone serial pigment |
| CN101456547A (en) * | 2008-12-19 | 2009-06-17 | 深圳市危险废物处理站有限公司 | Comprehensive utilization method of chemical polishing waste phosphoric acid |
| CN101864453A (en) * | 2009-04-14 | 2010-10-20 | 李泽唐 | Pool-stove-kang-kitchen-toilet five-in-one biogas production method for rural houses in cold areas |
| US20110309017A1 (en) * | 2010-04-13 | 2011-12-22 | Molycorp Minerals, Llc | Methods and devices for enhancing contaminant removal by rare earths |
| JP2013043800A (en) * | 2011-08-24 | 2013-03-04 | Kazumi Shibata | Liquid fertilizer and method for producing the same |
| CN102633384A (en) * | 2012-04-20 | 2012-08-15 | 瓮福（集团）有限责任公司 | Method for preparing phosphoric acid by recycling phosphorus from phosphorus-containing wastewater |
| CN103964602A (en) * | 2013-02-06 | 2014-08-06 | 成都天马微电子有限公司 | Phosphorus-containing wastewater treatment system and treatment method |
| CN106276837A (en) * | 2016-08-15 | 2017-01-04 | 东江环保股份有限公司 | Phosphoric acid waste liquid prepares the method for calcium hydrophosphate fodder |
| CN206457344U (en) * | 2017-01-22 | 2017-09-01 | 宁波公源生态建设有限公司 | A kind of Simple sewage processing neutralizes device |
| CN110885122A (en) * | 2019-11-30 | 2020-03-17 | 怀化恒一颜料化学有限公司 | Process for treating waste water from quinacridone production |
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