CN111499041A - Novel thiophanate methyl wastewater treatment process - Google Patents
Novel thiophanate methyl wastewater treatment process Download PDFInfo
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- CN111499041A CN111499041A CN202010342066.4A CN202010342066A CN111499041A CN 111499041 A CN111499041 A CN 111499041A CN 202010342066 A CN202010342066 A CN 202010342066A CN 111499041 A CN111499041 A CN 111499041A
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- resin
- water
- adsorption
- wastewater
- thiophanate
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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
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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
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
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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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/285—Treatment of water, waste water, or sewage by sorption using synthetic organic sorbents
-
- 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
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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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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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
- C02F2001/007—Processes including a sedimentation step
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
- C02F2103/36—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the manufacture of organic compounds
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- 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)
- Water Treatment By Sorption (AREA)
- Removal Of Specific Substances (AREA)
Abstract
The invention relates to a novel thiophanate-methyl wastewater treatment process, which comprises the following steps of: the method comprises the following steps: the thiophanate-methyl wastewater passes through a wastewater collection tank, the concentrated primary washing water and the secondary washing water are uniformly mixed according to the actual water quantity proportion, and then liquid caustic soda is added to adjust the pH value to about 8; step two: conveying the clear water into a standing layering tank by a pump, removing suspended flocs by a residue scraper, and conveying the clear water into a resin adsorption system by the pump; step three: performing adsorption treatment by JD-015 adsorption resin; step four: and (3) introducing the effluent of the resin adsorption tower into an intermediate water tank, pumping the effluent into an evaporative crystallization system, introducing the evaporated condensate into a biochemical treatment unit, and extracting the salt. And (3) adsorbing macromolecular organic matters by using resin in the third step, and desorbing by using methanol after the resin is saturated, so as to remove the adsorbed organic matters. The invention has the advantages that: can remove most organic matters efficiently by adsorption, and the adsorbed water has no peculiar smell. The flow steps are simple, and the maintenance is easy.
Description
Technical Field
The invention relates to the field of thiophanate-methyl wastewater treatment, in particular to a novel thiophanate-methyl wastewater treatment process.
Background
Thiophanate methyl, also known as thiophanate methyl, is a broad-spectrum systemic low-toxicity fungicide, has systemic, prevention and treatment effects, is developed and developed by Nippon Caoda corporation initially, and can effectively prevent and treat diseases of various crops. When the thiophanate-methyl is produced, methyl chloroformate and sodium thiocyanate are first thiocyanized, the product after thiocyanization is condensed with o-phenylenediamine, and the product is washed with water, solvent recovered and catalyst recovered and separated to obtain the thiophanate-methyl product, with the organic solvent usually being methanol or dichloroethane. Translation of characters
At present, few research reports on the production wastewater of thiophanate methyl are reported, and the thiophanate methyl belongs to one of wastewater types with high toxicity, high treatment cost and unsatisfactory treatment effect for the pesticide production industry.
Disclosure of Invention
The invention aims to solve the technical problems and provides a novel thiophanate-methyl wastewater treatment process.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: a novel thiophanate-methyl wastewater treatment process comprises the following steps:
the method comprises the following steps: the thiophanate-methyl wastewater passes through a wastewater collection tank, the concentrated primary washing water and the secondary washing water are uniformly mixed according to the actual water quantity proportion, and then liquid caustic soda is added to adjust the pH value to about 8;
step two: conveying the clear water into a standing layering tank by a pump, removing suspended flocs by a residue scraper, and conveying the clear water into a resin adsorption system by the pump;
step three: performing adsorption treatment by JD-015 adsorption resin;
step four: and (3) enabling the effluent of the resin adsorption tower to enter an intermediate water tank, pumping the effluent into an evaporative crystallization system, enabling the evaporated condensate to enter a biochemical treatment unit, extracting salt, and finally discharging the wastewater which reaches the standard.
And in the third step, the resin adsorbs macromolecular organic matters, after the resin is saturated, methanol is used for desorption, the adsorbed organic matters are removed, after the desorption is finished, the resin is cleaned by clean water, the clean water is recycled, after a certain concentration is reached, the resin and desorption liquid are rectified in a rectifying tower, the methanol is recycled, and tower bottoms are treated as solid waste.
The invention has the advantages that: the process of alkali regulation filtration, resin adsorption and evaporation is adopted, wherein the core process adsorption extraction technology can adsorb and remove most organic matters with high efficiency, and the adsorbed effluent has no peculiar smell. The flow steps are simple, and the maintenance is easy;
compared with the traditional process, the operation cost can be reduced by 20-40%, the hazardous waste amount of the traditional process flow is reduced by 50-80%, the removal rate of organic pollutants is improved by 20-50%, the problem of large smell in the traditional process can be solved, and the operation environment is more environment-friendly and humanized.
Drawings
FIG. 1 is a process flow diagram of a novel thiophanate-methyl wastewater treatment process of the invention.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
With the attached figure 1, a novel thiophanate-methyl wastewater treatment process comprises the following steps:
the method comprises the following steps: the thiophanate-methyl wastewater passes through a wastewater collection tank, the concentrated primary washing water and the secondary washing water are uniformly mixed according to the actual water quantity proportion, and then liquid caustic soda is added to adjust the pH value to about 8;
step two: conveying the clear water into a standing layering tank by a pump, removing suspended flocs by a residue scraper, and conveying the clear water into a resin adsorption system by the pump;
step three: performing adsorption treatment by JD-015 adsorption resin;
step four: and (3) enabling the effluent of the resin adsorption tower to enter an intermediate water tank, pumping the effluent into an evaporative crystallization system, enabling the evaporated condensate to enter a biochemical treatment unit, extracting salt, and finally discharging the wastewater which reaches the standard.
And in the third step, the resin adsorbs macromolecular organic matters, after the resin is saturated, methanol is used for desorption, the adsorbed organic matters are removed, after the desorption is finished, the resin is cleaned by clean water, the clean water is recycled, after a certain concentration is reached, the resin and desorption liquid are rectified in a rectifying tower, the methanol is recycled, and tower bottoms are treated as solid waste.
The core process of the process is resin adsorption, compared with the traditional micro-electrolysis and Fenton oxidation processes, the process can thoroughly remove organic pollutants in wastewater, the whole process is operated in a closed space, and the problem of large smell in the traditional process flow is effectively solved.
The present invention and its embodiments have been described above, and the description is not intended to be limiting, and the drawings are only one embodiment of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (2)
1. A novel thiophanate-methyl wastewater treatment process is characterized in that: it comprises the following steps:
the method comprises the following steps: the thiophanate-methyl wastewater passes through a wastewater collection tank, the concentrated primary washing water and the secondary washing water are uniformly mixed according to the actual water quantity proportion, and then liquid caustic soda is added to adjust the pH value to about 8;
step two: conveying the clear water into a standing layering tank by a pump, removing suspended flocs by a residue scraper, and conveying the clear water into a resin adsorption system by the pump;
step three: performing adsorption treatment by JD-015 adsorption resin;
step four: and (3) enabling the effluent of the resin adsorption tower to enter an intermediate water tank, pumping the effluent into an evaporative crystallization system, enabling the evaporated condensate to enter a biochemical treatment unit, extracting salt, and finally discharging the wastewater which reaches the standard.
2. The novel thiophanate-methyl wastewater treatment process according to claim 1, characterized in that: and in the third step, the resin adsorbs macromolecular organic matters, after the resin is saturated, methanol is used for desorption, the adsorbed organic matters are removed, after the desorption is finished, the resin is cleaned by clean water, the clean water is recycled, after a certain concentration is reached, the resin and desorption liquid are rectified in a rectifying tower, the methanol is recycled, and tower bottoms are treated as solid waste.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010342066.4A CN111499041A (en) | 2020-04-27 | 2020-04-27 | Novel thiophanate methyl wastewater treatment process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010342066.4A CN111499041A (en) | 2020-04-27 | 2020-04-27 | Novel thiophanate methyl wastewater treatment process |
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| Publication Number | Publication Date |
|---|---|
| CN111499041A true CN111499041A (en) | 2020-08-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010342066.4A Withdrawn CN111499041A (en) | 2020-04-27 | 2020-04-27 | Novel thiophanate methyl wastewater treatment process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111908690A (en) * | 2020-08-10 | 2020-11-10 | 常熟理工学院 | Treatment method of methyl carbamate wastewater |
| CN114380440A (en) * | 2021-12-16 | 2022-04-22 | 湖南海利化工股份有限公司 | Method for pretreating thiophanate methyl production wastewater through multi-unit cooperation |
-
2020
- 2020-04-27 CN CN202010342066.4A patent/CN111499041A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111908690A (en) * | 2020-08-10 | 2020-11-10 | 常熟理工学院 | Treatment method of methyl carbamate wastewater |
| CN114380440A (en) * | 2021-12-16 | 2022-04-22 | 湖南海利化工股份有限公司 | Method for pretreating thiophanate methyl production wastewater through multi-unit cooperation |
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Application publication date: 20200807 |