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Flocculating agent for printing and dyeing wastewater treatment and application of flocculating agent

A technology for printing and dyeing wastewater and flocculant, which is used in textile industry wastewater treatment, water/sewage treatment, water treatment parameter control, etc. The effect of excellent flocculation effect

Pending Publication Date: 2019-02-15
方期洲
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When chitosan is added in excess, the positive charge repulsion effect between protonated amino groups will hinder the aggregation of flocs and reduce the flocculation effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A flocculant for printing and dyeing wastewater treatment, which consists of the following components by weight: 65 parts of glutaraldehyde cross-linked chitosan, 28 parts of inorganic flocculant, 9 parts of plant extract flocculant, cationic collagen polypeptide base Surfactant C-CBS 5.5 parts.

[0023] The inorganic flocculant is composed of aluminum sulfate, polyaluminum chloride, and polyferric chloride in a mass ratio of 1:3:0.5. The plant extract flocculant is composed of ammoniated lignin and Enteromorpha polysaccharide in a mass ratio of 1:0.1.

[0024] The preparation method of the flocculant is as follows: put glutaraldehyde cross-linked chitosan, inorganic flocculant, plant extract flocculant, cationic collagen polypeptide-based surfactant C-CBS in a stirring tank, and stir for 40 minutes at room temperature, that is, have to.

Embodiment 2

[0026] A flocculant for printing and dyeing wastewater treatment, which consists of the following components in parts by weight: 70 parts of glutaraldehyde cross-linked chitosan, 25 parts of inorganic flocculant, 12 parts of plant extract flocculant, cationic collagen polypeptide base Surfactant C-CBS 4 parts.

[0027] The inorganic flocculant is composed of aluminum sulfate, polyaluminum chloride, and polyferric chloride in a mass ratio of 1:2:0.8. The plant extract flocculant is composed of enteromorpha polysaccharide and wintergreen leaf extract in a mass ratio of 1:10.

[0028] The preparation method of the flocculant is as follows: put glutaraldehyde cross-linked chitosan, inorganic flocculant, plant extract flocculant, cationic collagen polypeptide-based surfactant C-CBS agent in a stirring tank, stir at room temperature for 50min, Instantly.

Embodiment 3

[0030] A flocculant for printing and dyeing wastewater treatment, which consists of the following components by weight: 54 parts of glutaraldehyde cross-linked chitosan, 35 parts of inorganic flocculant, 3 parts of plant extract flocculant, cationic collagen polypeptide base Surfactant C-CBS 7 parts.

[0031] The inorganic flocculant is composed of aluminum chloride and polyaluminum sulfate in a mass ratio of 1:5. The plant extract flocculant is composed of ammoniated lignin and wintergreen leaf extract in a mass ratio of 1:0.2.

[0032]The preparation method of the flocculant is as follows: put glutaraldehyde cross-linked chitosan, inorganic flocculant, plant extract flocculant, cationic collagen polypeptide-based surfactant C-CBS in a stirring tank, and stir at room temperature for 35 minutes, that is, have to.

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PUM

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Abstract

The invention provides a flocculating agent for printing and dyeing wastewater treatment and an application of the flocculating agent, and relates to the technical field of wastewater treatment. The flocculating agent is prepared from components in parts by weight as follows: 50-70 parts of glutaraldehyde crosslinked chitosan, 25-35 parts of an inorganic flocculant, 3-15 parts of a plant extract flocculant and 3-7 parts of a collagen polypeptide based surfactant. Glutaraldehyde crosslinked chitosan has a quite good synthetic function with the inorganic flocculant, the plant extract flocculantand the collagen polypeptide based surfactant, so that the obtained flocculating agent has an excellent flocculation effect and has excellent COD removal rate and color removal rate.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a flocculant for printing and dyeing wastewater treatment and its application. Background technique [0002] During the dyeing process of textiles, about 10-20% of the dyes are discharged with wastewater to form printing and dyeing wastewater. Due to the characteristics of large discharge volume, complex composition, high organic content and chroma, and poor biodegradability of printing and dyeing wastewater, its treatment has always been the focus and difficulty of industrial wastewater treatment in my country. In particular, the emergence and use of some new durable dyes in recent years has increased the difficulty of wastewater treatment while improving the dyeing effect, posing new challenges to the recycling and "zero discharge" of printing and dyeing wastewater in my country. [0003] Flocculation and sedimentation are one of the most basic unit operations in ...

Claims

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Application Information

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IPC IPC(8): C02F1/52C02F103/30C02F101/30
CPCC02F1/52C02F1/5236C02F1/5245C02F1/5263C02F2101/308C02F2103/30C02F2209/08C02F2305/04
Inventor 方期洲
Owner 方期洲
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