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A kind of uf film-making wastewater treatment process and its circulation treatment device

A wastewater treatment and process technology, which is applied in the field of UF membrane-making wastewater treatment process and its circulating treatment device, can solve the problem that additive pollutants cannot be removed, and achieve the effect of convenient and fast equipment operation and use.

Active Publication Date: 2020-03-20
浙江东洋环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the wastewater treatment method in this invention patent can only remove solvent pollutants, and cannot achieve the removal effect on additive pollutants, so it cannot be well used in the UF membrane wastewater treatment process

Method used

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  • A kind of uf film-making wastewater treatment process and its circulation treatment device
  • A kind of uf film-making wastewater treatment process and its circulation treatment device
  • A kind of uf film-making wastewater treatment process and its circulation treatment device

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Experimental program
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Effect test

Embodiment 1

[0030] Embodiment 1: as attached figure 1 , 2 and attached image 3 Shown, a kind of UF film making wastewater treatment process comprises the following steps successively:

[0031] S1, UF membrane-making water, that is, ultrafiltration membrane-making water is subjected to ultrafiltration membrane filtration and reflux treatment, and the solvent and additives in the UF membrane-making wastewater are removed to ensure the total amount of gel liquid in the gel tank. amount, and prolong the waste water replacement cycle of the gel liquid, wherein the gel liquid filtered by the ultrafiltration membrane is returned to the gel tank, and the gel liquid is guaranteed to be higher than the minimum liquid level for membrane making, and the gel tank is equipped with a condensation Glue replenishment tank, wherein the ultrafiltration membrane is a polysulfone ultrafiltration membrane with a molecular weight cut-off of 5500, which is used to intercept PEG and PVP, and the pressurized me...

Embodiment 2

[0051] Embodiment 2: as attached figure 1 , 2 and attached image 3 Shown, a kind of UF film making wastewater treatment process comprises the following steps successively:

[0052] S1. Perform ultrafiltration membrane filtration and reflux treatment on the UF membrane-making water, and remove the solvent and additives in the UF membrane-making wastewater to ensure the total amount of gel liquid in the gel tank and prolong the condensation process. The waste water replacement cycle of the glue solution, in which the gel solution filtered by the ultrafiltration membrane is returned to the gel tank, and the gel solution is guaranteed to be higher than the minimum liquid level for membrane production. The gel tank is equipped with a gel solution supplement tank, of which the ultrafiltration The filter membrane is a polysulfone ultrafiltration membrane with a molecular weight cut-off of 5500, which is used to intercept PEG and PVP, and the pressurized membrane flow rate J of the...

Embodiment 3

[0072] Embodiment 3: as attached figure 1 , 2 and attached image 3 Shown, a kind of UF film making wastewater treatment process comprises the following steps successively:

[0073] S1. Perform ultrafiltration membrane filtration and reflux treatment on the UF membrane-making water, and remove the solvent and additives in the UF membrane-making wastewater to ensure the total amount of gel liquid in the gel tank and prolong the condensation process. The waste water replacement cycle of the glue solution, in which the gel solution filtered by the ultrafiltration membrane is returned to the gel tank, and the gel solution is guaranteed to be higher than the minimum liquid level for membrane production. The gel tank is equipped with a gel solution supplement tank, of which the ultrafiltration The filter membrane is a polysulfone ultrafiltration membrane with a molecular weight cut-off of 5500, which is used to intercept PEG and PVP, and the pressurized membrane flow rate J of the...

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Abstract

The invention belongs to the technical field of organic wastewater treating technologies and especially relates to a UF membrane making wastewater treating technology and a circular treating device thereof. The UF membrane making wastewater treating technology comprises 7 treating steps: ultrafiltration membrane filtering, ferric-carbon micro-electrolysis technical treatment, ultrasonic ordinary-pressure plasma treatment, MBR treatment and the like. The circular treating device comprises a first diaphragm pump arranged on the bottom surface of a gel tank, an ultrafiltration membrane and a first valve, wherein the ultrafiltration membrane is connected with the first diaphragm pump and is used for filtering a solvent and an additive, the first valve is arranged between the ultrafitration membrane and the gel tank and is used for controlling filtered gel liquid to flow back into the gel tank, and a liquid level detection controller is arranged in the gel tank. The UF membrane making wastewater treating technology disclosed by the invention has the advantages of convenience and quickness in wastewater treating technology and equipment operation use; all items of pollutant indexes, especially PVP and PEC, of the treated UF membrane making wastewater both can be effectively degraded; standardized emission of COD is achieved.

Description

technical field [0001] The invention belongs to the technical field of organic wastewater treatment technology, and in particular relates to a UF membrane-making wastewater treatment technology and a circulation treatment device thereof. Background technique [0002] The UF membrane-making process generally adopts the non-solvent-induced phase separation method, in which there are a large number of solvent pollutants in the membrane-making wastewater, including DMAc and DMF, namely dimethylacetamide and dimethylformamide; and additive pollutants , including PVP and PEG, that is, polyvinylpyrrolidone and polyethylene glycol, the above two types need to be removed before the membrane-making wastewater can meet the discharge standards. [0003] The existing traditional treatment methods for solvent pollutants such as DMAc and DMF mainly include steps such as electrolysis, catalysis, oxidation, adsorption and coagulation, which also have a good removal effect, but for difficult ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F101/34C02F101/38C02F103/34
CPCC02F1/36C02F1/444C02F1/46176C02F1/52C02F1/722C02F3/1268C02F3/2846C02F9/00C02F2101/34C02F2101/38C02F2103/34C02F2209/08C02F2301/08C02F2305/026
Inventor 钟卫权周钱华秦小伟冯林铭
Owner 浙江东洋环境科技有限公司