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Yarn-dyed fabric yarn dyeing waste water treatment and online recycling method and device

A wastewater treatment and recovery method technology, which is applied in textile industry wastewater treatment, multi-stage water treatment, water/sewage treatment, etc., can solve the problems of high treatment cost, difficult to meet the discharge standard, and difficult treatment, so as to reduce the cost of pollution control , reduce the content, reduce the effect of production cost

Pending Publication Date: 2017-02-22
TIANJIN UNITED ENVIRONMENTAL ENG DESIGN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to propose a method and device for efficient treatment and online recovery of yarn-dyed wastewater from yarn-dyed fabrics, which can treat yarn-dyed wastewater separately , and recycle the anhydrous sodium sulfate in it, which can effectively reduce the content of refractory organic matter and salt in the comprehensive wastewater, and improve the utilization rate of raw materials, control the generation of pollutants from the source, and fully reflect the clean production philosophy

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Yarn-dyed fabric yarn dyeing waste water treatment and online recycling method and device
  • Yarn-dyed fabric yarn dyeing waste water treatment and online recycling method and device
  • Yarn-dyed fabric yarn dyeing waste water treatment and online recycling method and device

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Embodiment 1

[0042] Such as figure 1 As shown, an efficient treatment and on-line recovery system for yarn-dyed fabric dyeing wastewater mainly includes self-cleaning filter 1, regulating tank 2, heterogeneous Fenton oxidation tank 3, air flotation tank 4, CMF5, RO6, and MVR7. Use sequential connection structure;

[0043] The self-cleaning filter 1 filters the wool, particles, flocs, etc. in the yarn dyeing wastewater. Through the intelligent (PLC) design, the system can automatically identify the impurity deposition speed, automatically discharge the sewage valve signal, and self-clean and filter The water from the device 1 enters the regulating tank 2;

[0044] The adjusting tank 2 homogenizes the water quality and quantity of the yarn dyeing wastewater, according to the Na in the wastewater 2 CO 3 Add appropriate amount of sulfuric acid to make Na in wastewater 2 CO 3 Fully converted to Na 2 SO 4 And continue to add sulfuric acid to adjust the pH value to a pH value range of 5~6 suitable for...

Embodiment 2

[0051] A high-efficiency treatment and online recovery method for yarn-dyed fabric dyeing wastewater:

[0052] (1) The self-cleaning filter filters the wool, particles and flocs in the dyeing wastewater to reduce turbidity, purify water quality and protect the normal operation of other equipment in the system;

[0053] (2) The adjustment tank homogenizes the water quality and quantity of the dyeing wastewater, adding sulfuric acid according to the content of Na2CO3 in the dyeing wastewater to make the Na in the wastewater 2 CO 3 Fully converted to Na 2 SO 4 And continue to add sulfuric acid to adjust the pH to a pH range of 5 suitable for Fenton reaction;

[0054] (3) The heterogeneous Fenton oxidation tank is filled with a new type of ternary supported activated carbon catalyst CuO-MnO 2 -ZnO / AC, the total filling volume is 1 / 3 of the effective volume of the heterogeneous Fenton oxidation tank. At the same time, 30% hydrogen peroxide is added to the heterogeneous Fenton oxidation tan...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention discloses a yarn-dyed fabric yarn dyeing waste water treatment and online recycling method and device. The device mainly comprises a self-cleaning filter, an adjusting pond, a heterogeneous Fenton oxidation pond, an air flotation pond, a double membrane system and an MVR system which are connected in sequence. The method comprises the steps that yarn dyeing waste water is independently treated, anhydrous sodium sulfate in the yarn dyeing waste water is subjected to resource recycling, the content of refractory organics and salt in the comprehensive waste water can be effectively reduced, and the utilization rate of raw materials is increased. The experiment result shows that the whole device can recycle 90% or above of the yarn dyeing waste water, the salt in the waste water can be effectively removed, the salt removing rate is larger than 99%, distillate generated by an RO water producing and MVR system can be recycled to be used for various production links, the new water use amount is replaced, the generation amount of pollutants is controlled from the source, and the idea of cleaner production is fully embodied.

Description

Technical field [0001] The invention belongs to the field of wastewater treatment and resource recovery in the textile printing and dyeing industry, and particularly relates to a method and device for efficient treatment of high-salt-content yarn dyeing wastewater and online recovery of anhydrous sodium sulfate for yarn-dyed enterprises. Background technique [0002] Yarn-dyed fabric production includes desizing, mercerizing, yarn dyeing and other processes. Among them, the dyeing wastewater is generated in the yarn dyeing process during the production of yarn-dyed fabrics, and the water volume is relatively large. Because different fiber raw materials and products require different dyes, auxiliaries and dyeing methods, and the different coloring rates of various dyes and different concentrations of dyeing liquors, the quality of dyeing wastewater varies greatly, including slurry and dyes. , Additives, surfactants, etc., generally strongly alkaline, high color, COD is much highe...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/10C02F103/30
CPCC02F9/00C02F2301/08C02F2103/30C02F2201/007C02F1/722C02F1/725C02F1/441C02F1/04C02F1/24C02F1/001Y02A20/131
Inventor 石岩岳金强段云霞荆建刚刘京伟霍永青侯霙孙凯赵晓丽许丹宇赵金国段晓雨
Owner TIANJIN UNITED ENVIRONMENTAL ENG DESIGN
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