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Advanced treatment and decoloration method for printing and dyeing wastewater

A printing and dyeing wastewater and advanced treatment technology, applied in the field of water treatment, can solve the problems of substandard effluent water quality, achieve the effect of increasing the reaction rate and increasing the specific surface area

Inactive Publication Date: 2016-12-07
百诺纳米科技(苏州)有限公司
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Problems solved by technology

[0008] In order to overcome the above problems in the prior art, the present invention aims to provide a method for advanced treatment and decolorization of printing and dyeing wastewater, so as to more effectively remove the remaining chroma and CODcr in the water, and prevent the water quality from fluctuating or the treatment effect in winter is poor. The situation where the effluent water quality is not up to standard

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  • Advanced treatment and decoloration method for printing and dyeing wastewater
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  • Advanced treatment and decoloration method for printing and dyeing wastewater

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Embodiment Construction

[0033] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0034] refer to figure 1 As shown, a printing and dyeing wastewater advanced treatment and decolorization method, comprising the following steps:

[0035] Step 1) Pass the printing and dyeing wastewater to be treated through the grid to filter out large impurities;

[0036] Step 2) Send the filtered printing and dyeing wastewater into the adjustment tank for equalization and adjustment treatment;

[0037] Step 3) Send the printing and dyeing wastewater in the regulating tank to the MBBR nano-bubble biological reaction tank for biochemical reaction, ammonification reaction and nitrification reaction to reduce CODcr, NH 4 -N, TP, concentration of odorous substances and reduction of water color and turbidity;

[0038] A certain amount of MBBR biofilm fillers with high specific surface area suitable for the attachment and reproduction...

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Abstract

The invention discloses an advanced treatment and decoloration method for printing and dyeing wastewater. The method comprises that steps that printing and dyeing wastewater to be treated passes through a grille, an adjusting tank, an MBBR nano bubble biological reaction tank and a secondary sedimentation tank in sequence, the concentrations of CODcr, NH4-N, TP and smelly substances are decreased, and water chromaticity and turbidity are reduced; the printing and dyeing wastewater is sent into an ozone nano bubble advanced oxidation system, residual chromaticity and CODcr in the water are effectively removed, and the effluent quality dissatisfaction caused by water quality fluctuation or a poor winter treatment effect is prevented; the printing and dyeing wastewater subjected to decoloration is sent into an efficient sedimentation tank and an active sand filter in sequence; and the printing and dyeing wastewater is subjected to emission up to the national standard finally.

Description

technical field [0001] The invention relates to the field of water treatment, in particular to a method for advanced treatment and decolorization of printing and dyeing wastewater. Background technique [0002] At present, the proportion of industrial wastewater in the actual influent water of many sewage treatment plants is often relatively large, even about 70%, and printing and dyeing wastewater is the main one. [0003] Printing and dyeing wastewater has the following characteristics: [0004] (1) Large water volume, high content of organic pollutants, deep color, large changes in alkalinity and pH value, and drastic changes in water quality. Due to the development of chemical fiber fabrics and the progress of printing and dyeing finishing technology, a large amount of organic substances that are difficult to biodegrade, such as PVA size and new additives, enter the printing and dyeing wastewater, which increases the difficulty of treatment. [0005] (2) Another charac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F1/78C02F3/08C02F103/30
CPCC02F1/001C02F1/78C02F3/08C02F9/00C02F2103/30C02F2201/782C02F2203/006Y02W10/10
Inventor 许福山张斌林涌泉
Owner 百诺纳米科技(苏州)有限公司
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