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Preparation method of polymeric aluminum magnesium chloride flocculating agent for treatment of printing and dyeing waste water

A technology of polyaluminium-magnesium chloride and printing and dyeing wastewater, which is applied in the direction of processing wastewater treatment, textile industry wastewater treatment, food industry wastewater treatment, etc. It can solve the problems of limited alkaline wastewater treatment effect and inability to meet printing and dyeing wastewater treatment requirements, etc. To achieve the effects of rich varieties, lower water treatment costs, and easy access to raw materials

Inactive Publication Date: 2017-06-23
营口镁质材料研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The flocculation process is affected by the type of dye and the pH of printing and dyeing wastewater, and the effect of direct use in alkaline wastewater treatment is often limited
A single treatment method can no longer meet the treatment requirements of printing and dyeing wastewater

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0016] The invention provides a preparation method of polyaluminum magnesium chloride flocculant used for printing and dyeing wastewater treatment, which comprises the following steps in turn: adding an appropriate amount of hydrochloric acid and distilled water into a three-necked flask equipped with a reflux condenser, heating and reacting to a certain temperature, and Add crushed (200 mesh) roasted bauxite and an appropriate amount of distilled water, and continue to stir the reaction. During this process, the aluminum ions in the bauxite are continuously dissolved. After a certain period of reaction, add an appropriate amount of Magnesium oxide powder and distilled water, continue to heat and stir to react for a period of time, stop heating, cool, and sink for 24 hours, and the reaction solution is the prepared polyaluminum magnesium chloride flocculant.

[0017] Further, the mesh size of the bauxite is 0-200 mesh.

[0018] Further, the bauxite roasting process is that the...

Embodiment

[0023] Weigh 50g of bauxite produced in Liaoning that has been crushed to 200 meshes, roast at 800°C for 2 hours, add 180ml of 20% hydrochloric acid to the reflux device, heat up to 80°C, add roasted activated bauxite, continue React for 3 hours, then add 10 g of light-burned magnesium oxide powder, continue to stir and react for 1 hour, stop the reaction, cool, and settle for 24 hours to obtain polyaluminum magnesium chloride flocculant.

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PUM

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Abstract

The invention discloses a preparation method of a polyaluminum magnesium chloride flocculant used for the treatment of printing and dyeing wastewater, which comprises the following steps in sequence: adding an appropriate amount of hydrochloric acid and distilled water into a three-necked flask equipped with a reflux condenser, heating and reacting to a certain temperature, Add crushed (200 mesh) roasted bauxite and appropriate amount of distilled water, and continue to stir the reaction. During this process, the aluminum ions in the bauxite are continuously dissolved. After a certain period of reaction, add Appropriate amount of magnesium oxide powder and distilled water, continue to heat and stir to react for a period of time, stop heating, cool, and sink for 24 hours, the reaction liquid is the prepared polyaluminum magnesium chloride flocculant. The polyaluminium-magnesium chloride flocculant product obtained by the invention has simple process, low cost and good performance, rationally utilizes resources, creates objective profit margins, and has good industrial prospects.

Description

technical field [0001] The invention relates to the field of wastewater treatment, in particular to a preparation method of a polyaluminum magnesium chloride flocculant used for the treatment of printing and dyeing wastewater. Background technique [0002] Bauxite, also known as aluminum ore, is a sedimentary rock rich in aluminum minerals. In terms of origin, there are two types of bauxite: sedimentation and weathering. Bauxite in most areas of my country belongs to monohydrate bauxite. Bauxite has large reserves and wide distribution in my country, and has good resource advantages. The research and development of bauxite as the main raw material to prepare polyaluminum flocculants has the advantages of easy availability of raw materials, low cost, and broad application prospects. [0003] In my country, bauxite is mainly of medium and low grade (aluminum-silicon ratio is less than 7). At present, Bayer method and sintering method are commonly used to extract alumina fro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52C02F103/30C02F103/24C02F103/28C02F103/32
CPCC02F1/5236C02F2103/24C02F2103/28C02F2103/30C02F2103/32
Inventor 林宇王福明崔薇薇曾凡东
Owner 营口镁质材料研究院有限公司
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