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A fiber-based sewage decolorization and purification material and its preparation method

A purification material and fiber-based technology, which is applied in the field of sewage treatment material preparation, can solve the problems of no breakthrough in biological decolorization and high treatment cost of advanced oxidation method, achieve high decolorization rate and COD removal rate, reduce sludge transportation costs, The effect of improving the flocculation ability

Inactive Publication Date: 2015-09-16
合肥市东方美捷分子材料技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] A serious disadvantage of the advanced oxidation method is the high processing cost
On the whole, biological decolorization has not yet made a breakthrough and must be used in combination with other treatments

Method used

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  • A fiber-based sewage decolorization and purification material and its preparation method
  • A fiber-based sewage decolorization and purification material and its preparation method
  • A fiber-based sewage decolorization and purification material and its preparation method

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Embodiment Construction

[0051] Non-limiting examples are described below. For the convenience of description, hereinafter referred to as parts by mass.

[0052] (1) Preparation of Modified Additive A

[0053] Take 275 parts of magnesium sulfate and 725 parts of magnesium chloride and mix them uniformly.

[0054] (2) Preparation of modified fibers

[0055] 1. Preparation of modified cellulose plant fiber

[0056] The cellulose is grafted with cationic groups to make it positively charged, which can significantly improve the rapid combination of negatively charged dyes in sewage with adsorbent cellulose, and achieve the purpose of decolorization from water.

[0057] Preparation of modified cellulose plant fibers: The graft copolymerization of cellulose can be divided into three categories: free radical polymerization, ionic polymerization and condensation or addition polymerization. Graft copolymerization can improve the structure and properties of cellulose and its derivatives. The invention can b...

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PUM

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Abstract

The invention discloses a fiber radical sewage decoloration and purification material which is characterized by comprising a component (I) and a component (II). The component (II) occupies 5%-10% of the total mass. The component (1) is a product obtained by reaction of 36% formaldehyde solutions, dicyandiamide, ammonium chloride and property-modifying additives A, wherein the mass ratios of the 36% formaldehyde solutions, the dicyandiamide, the ammonium chloride and the property-modifying additives A are sequentially 1.0-1.3:0.50-0.65:0.60-0.70:0.06-0.09. The property-modifying additives A are a mixture obtained by mixing magnesium sulfate and magnesium chloride according to a proportion, wherein the mass ratio of the magnesium sulfate and the magnesium chloride is 2.0-3.5:8.0-6.5. The component (II) is a natural fiber (plant and / or animal) which is modified by cation modifiers. The fiber radical sewage decoloration and purification material integrates multiple functions such as decoloration, flocculation, entanglement and COD removing. The decoloration ratio of sewage can reach more than 93%, the COD value removing rate is higher than that of the prior art by more than 10%, reclaimed water reusing can be achieved, and sewage discharging is reduced.

Description

1. Technical field [0001] The invention relates to the preparation of sewage treatment materials, in particular to a preparation method for fiber-based sewage decolorization and purification materials for printing and dyeing sewage decolorization. 2. Background technology [0002] Due to the accelerated process of industrialization and urbanization, my country's water resources are in short supply, the distribution is extremely unbalanced, and the pollution of surface water and groundwater is becoming more and more serious. The shortage of heavy water resources. China is the world's largest textile printing and dyeing processing base, with an annual processing fiber volume of more than 20 million tons, involving cotton, linen, silk, wool, chemical fibers, etc., and the discharge of colored sewage from textile printing and dyeing is increasing. [0003] Among them, printing and dyeing sewage dye pollution is the most serious. The annual consumption of dyes in China is more th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/00C02F1/28C02F1/56B01J20/24C08G12/16C02F103/30
Inventor 朱守诚褚维发刘国庆陆明红漆静秋汪洋喻学林陈方文刘焕霞
Owner 合肥市东方美捷分子材料技术有限公司
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