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PVA-containing desizing wastewater treatment method and treatment system

A technology for desizing wastewater and treatment methods, which is applied in textile industry wastewater treatment, water/sewage treatment, special compound water treatment, etc. It can solve the problems of high cost and complicated process, and achieve low cost, simple treatment process and uniform mixing high degree of effect

Pending Publication Date: 2018-08-17
BOTOU DAHUA ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the process of this treatment method is complicated and the cost is relatively high. At present, there is no good way to treat the desizing wastewater containing PVA.

Method used

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  • PVA-containing desizing wastewater treatment method and treatment system

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Comparison scheme
Effect test

Embodiment

[0029] This embodiment relates to a treatment method for efficient treatment of PVA-containing desizing wastewater.

[0030] A processing system such as figure 1 As shown, the PVA removal unit is included, the PVA removal unit includes an electromagnetically stirred reactor 1, the side wall of the electromagnetically stirred reactor is provided with a water inlet 11 and a water outlet 12, and the water outlet 12 is placed in the water inlet 11, in this way, after the desizing wastewater entering the electromagnetically stirred reactor 1 is reacted, the upper layer of wastewater can be discharged from the water outlet 12 of the electromagnetically stirred reactor 1. The water inlet 11 is connected with a mixing mechanism 2, the mixing mechanism 2 is provided with a desizing wastewater inlet, and the desizing wastewater inlet is connected to the desizing wastewater source through a pump; An acid conditioner dosing valve is provided for adding the acid conditioner to the mixing ...

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Abstract

The invention discloses a PVA-containing desizing wastewater treatment method. The treatment method is characterized in that an acidic regulator is used for regulating the pH value of to-be-treated desizing wastewater to be 3-5, and then, the desizing wastewater is conveyed into an electromagnetic stirring type reactor; current is controlled to be 12-14A, and frequency is controlled to be 25-35 HZ, so that PVA is gathered to form polymer; the polymer is discharged from the electromagnetic stirring type reactor, and filtration is used for completing treatment on pollutant PVA in desizing wastewater. The obtained treatment method overcomes influences of PVA on wastewater treatment, avoids the treatment effect of wastewater in the presence of PVA, remarkably improves PVA removal efficiency, and effectively avoids the invalid influences caused by follow-up treatment steps as PVA removal efficiency is insufficient. A PVA-containing desizing wastewater treatment system is simple in structure, is low in investment and operation cost, is high in desizing wastewater treatment efficiency, and has remarkable application popularization value.

Description

technical field [0001] The invention relates to the technical field of desizing wastewater treatment, in particular to a treatment method and system for desizing wastewater containing PVA. Background technique [0002] Polyvinyl alcohol (PVA) is a water-soluble high molecular polymer. Because of its excellent serosity, adhesion, wear resistance and easy compatibility with other slurries, it began to be used in the 1940s. It is used as slurry in textile, paper making, chemical industry and other industries. According to statistics, the amount of PVA consumed by textile pulp alone in my country is more than 250,000 tons. However, the size will affect the wetting and permeability of the fabric in the dyeing and finishing process, hinder the dyeing of the fabric by the dye, increase the amount of dye, increase the load of scouring and bleaching, and cause printing and dyeing defects, affecting product quality, so the fabric Before entering the dyeing and finishing process, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/12C02F101/34C02F103/30
CPCC02F9/00C02F2101/34C02F1/722C02F1/66C02F1/48C02F1/4672C02F1/001C02F2305/026C02F2103/30
Inventor 王健田英强赵静马红燕
Owner BOTOU DAHUA ENG CO LTD
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