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Treatment process for textile wastewater

A technology for textile wastewater and treatment process, applied in textile industry wastewater treatment, water/sewage treatment, special compound water treatment, etc., can solve the problems of complex dyeing wastewater composition, difficult degradation of dyes, environmental threats, etc., and achieve good oil removal effect. , the effect of strong aggregates and a wide pH range

Active Publication Date: 2015-01-21
浙江腾马纺织有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, the composition of dyeing wastewater is complex, and the various organic dyes contained are difficult to degrade and have deep color, which poses a very serious threat to the environment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment １

[0018] A textile wastewater treatment process of the present invention, the steps are:

[0019] (1) Filter the textile wastewater through a grid;

[0020] (2) Enter the first sedimentation tank for 5 hours of treatment and filter;

[0021] (3) Enter the second sedimentation tank for 3 hours of treatment and filter;

[0022] (4) The sludge is transported away after dehydration.

[0023] Coagulant is put into the first sedimentation tank and the second sedimentation tank,

[0024] The coagulant includes the following components by weight: 18 parts of ferric chloride, 20 parts of ferrous sulfate, 7 parts of polyvinylamine, 12 parts of calcium oxide, and 10 parts of attapulgite.

[0025] Put 400mg of coagulant per 1L of sewage.

Embodiment 2

[0027] The technical scheme of a textile wastewater treatment process of the present invention is that the steps are:

[0028] (1) Filter the textile wastewater through a grid;

[0029] (2) Enter the first sedimentation tank for 6 hours of treatment and filter;

[0030] (3) Enter the second sedimentation tank for 2 hours of treatment and filter;

[0031] (4) The sludge is transported away after dehydration.

[0032] A coagulant is put into the first sedimentation tank and the second sedimentation tank, and the coagulant includes the following components by weight: 20 parts of ferric chloride, 25 parts of ferrous sulfate, 10 parts of polyvinylamine, and 5 parts of calcium oxide. , Attapulgite 15 parts.

[0033] Put 500mg of coagulant per 1L of sewage.

Embodiment 3

[0035] The technical scheme of a textile wastewater treatment process of the present invention is that the steps are:

[0036] (1) Filter the textile wastewater through a grid;

[0037] (2) Enter the first sedimentation tank for 4 hours of treatment and filter;

[0038] (3) Enter the second sedimentation tank for 4 hours of treatment and filter;

[0039] (4) The sludge is transported away after dehydration.

[0040] A coagulant is put into the first sedimentation tank and the second sedimentation tank, and the coagulant includes the following components by weight: 10 parts of ferric chloride, 25 parts of ferrous sulfate, 5 parts of polyvinylamine, and 20 parts of calcium oxide. , Attapulgite 5 parts.

[0041] Put 200mg of coagulant per 1L of sewage.

[0042] The coagulant in the above embodiment is used for the treatment of textile waste water. The textile waste water is first filtered through a grid and then enters a sedimentation tank, and the coagulant is put into the t...

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Abstract

The invention discloses a treatment process for textile wastewater. The treatment process for the textile wastewater comprises the following steps: after textile wastewater is filtered via a grizzly screen, the textile wastewater sequentially enters a first sedimentation tank and a second sedimentation tank; the textile wastewater is treated by coagulants and is filtered. According to the treatment process for the textile wastewater provided by the invention, only the coagulant is adopted to treat the textile wastewater and a favorable wastewater treatment effect can be reached; generated condensation objects are solid and less prone to damages; the precipitation performance is good; the decolorizing effect and oil removing effect are good; moreover, the coagulant provided by the invention is adapted to large range of PH values; the thermal stability is high and the effect is stable.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a textile wastewater treatment process. Background technique [0002] The textile printing and dyeing industry is a large discharge of industrial wastewater. Textile wastewater has the characteristics of large water volume, high content of organic pollutants, deep color, large pH changes, and large changes in water quality. It is a difficult industrial wastewater to treat. Cotton textile industry wastewater mainly comes from the dyeing and finishing process, including desizing, scouring, bleaching, mercerizing, dyeing, printing and finishing. [0003] As a mid-stream industry in the textile industry, the dyeing industry plays a linking role in the textile industry, that is, gray fabrics manufactured from various types of fibers are produced through dyeing and printing processes to produce various types of fabrics with colors and patterns. In the dyeing industry, the cot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F1/52C02F1/56
CPCC02F1/004C02F1/52C02F1/56C02F9/00C02F2001/007C02F2103/30C02F2201/002C02F2301/00C02F2305/04
Inventor 牟军平朱娜刘晓于春光
Owner 浙江腾马纺织有限公司
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