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Comprehensive treatment system for dicamba high-salt-content wastewater

A comprehensive treatment, high-salt technology, applied in multi-stage water treatment, water/sewage treatment, special compound water treatment, etc., can solve the problems of high salt content of dicamba wastewater and secondary pollution of receiving environment, and achieve The effect of fully and thoroughly degrading wastewater, saving the dosage of chemicals, and improving biodegradability

Inactive Publication Date: 2018-06-22
NANJING UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to overcome the above shortcomings and deficiencies, one of the objectives of the present invention is to provide a comprehensive treatment system for dicamba high-salt wastewater, which improves the problem of secondary pollution to the receiving environment due to the high salt content of dicamba wastewater

Method used

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  • Comprehensive treatment system for dicamba high-salt-content wastewater
  • Comprehensive treatment system for dicamba high-salt-content wastewater
  • Comprehensive treatment system for dicamba high-salt-content wastewater

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Embodiment 1

[0025] see figure 1 , a comprehensive treatment system for dicamba high-salt wastewater, including a coagulation reaction unit, an air flotation sedimentation unit, a composite filtration unit, a pH adjustment unit, an evaporation crystallization unit, a neutralization unit, a micro-electrolysis unit, A Fenton reaction unit and a membrane separation unit, the treatment system also includes pipelines and lift pumps for transporting wastewater between the units.

[0026] Using the above-mentioned treatment system to treat dicamba high-salt wastewater, the treatment process includes the following steps:

[0027] S1, coagulation reaction: the coagulation reaction unit includes a coagulation reactor, and PAC and PAM are added in the coagulation reactor, and the waste water is lifted into the coagulation reactor of the coagulation reaction unit by a pump, and is discharged in the agent PAC and PAM Under the action, the coagulation reaction is carried out for 10 minutes, so that som...

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Abstract

The invention discloses a comprehensive treatment system for dicamba high-salt-content wastewater. The system comprises a coagulation reaction unit, an air flotation sedimentation unit, a composite filtration unit, a pH adjustment unit, an evaporation crystallization unit, a neutralization unit, a micro-electrolysis unit, and a Fenton reaction unit and a membrane separation unit which communicatethrough a pipeline in sequence. According to the system provided by the invention, a micro-electrolysis reaction device, an MVR evaporator and a Fenton reaction device are adopted together, so that the problem that the dicamba wastewater has a high salt content, thereby having secondary pollution to the receiving environment is improved, and the system not only has the effects of making the wastewater degraded more fully and thoroughly and recovering useful matter, but also has the effects of being capable of reducing energy consumption and reducing operating costs and wastewater treating time.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a comprehensive treatment system for dicamba high-salt wastewater. Background technique [0002] Dicamba, also known as Baicaodi, is used for post-emergence spraying. The drug can be quickly absorbed by the leaves, stems, and roots of weeds, conduct upward and downward through the phloem and xylem, and mostly concentrate in the meristems and parts with strong metabolic activities. Hinder the normal activity of plant hormones and kill weeds. Dicamba decomposes at about 200°C, is stable under normal conditions, and has anti-oxidation and anti-hydrolysis capabilities. Dicamba wastewater has a high salt content, generally 3% to 5%, and is currently diluted with a large amount of water and then treated by contact oxidation. , the waste of water resources is serious, the process operation is extremely unstable, the effluent is difficult to meet the standard, and the salts...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/10C02F101/30
CPCC02F9/00C02F1/56C02F1/66C02F1/5236C02F1/722C02F1/46104C02F1/444C02F1/442C02F1/441C02F2101/306C02F1/24C02F1/283C02F1/001C02F1/04C02F2305/026C02F2301/08
Inventor 朱明新王朋储海蓉徐炎华
Owner NANJING UNIV OF TECH
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