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Preparation method for organic polymer-diatomaceous soil composite coagulating agent

A diatomite and polymer technology, used in flocculation/sedimentation water/sewage treatment, processing wastewater treatment, textile industry wastewater treatment, etc., to achieve the effects of low production cost, increased contact position, and improved surface activity

Inactive Publication Date: 2009-01-21
浙江三鼎科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, diatomite is often used alone for the treatment of drinking water, swimming pool water, industrial water, boiler circulating water and other wastewater, and organic polymers are combined with activated diatomite to make use of the synergistic effect of the two to prepare a composite mixture. The coagulant method has not been reported

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] After the diatomite raw material is calcined and activated at 500°C for 3 hours, add 0.1wt% polydimethyldiallyl ammonium chloride by diatomite weight to the activated diatomite, stir well in the aqueous solution to make it uniformly dispersed , dried, crushed and ground to obtain the finished product.

Embodiment 2

[0018] The diatomite raw material is soaked in 10% sulfuric acid solution for 4 hours, washed with water, and filtered to obtain activated diatomite, and 20 wt% polydicyandiamide formaldehyde of diatomite weight is added to the above-mentioned activated diatomite, and in the aqueous solution Stir fully to disperse evenly, dry, pulverize and finely grind to obtain the finished product.

Embodiment 3

[0020] The diatomite raw material is soaked in 5% nitric acid solution for 8 hours, washed with water, and filtered to obtain activated diatomite. After activation, anionic polyacrylamide of 10 wt% diatomite weight is added to the diatomite, and fully stirred in the aqueous solution Disperse it evenly, dry it, crush it and grind it finely to get the finished product.

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PUM

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Abstract

The invention discloses a preparing method of organic polymer-diatom earth composite coagulant, which comprises the following steps: pre-proceeding diatom earth raw material firstly; compositing with organic macromolecular flocculant; getting the organic polymer-diatom earth composite coagulant.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a preparation method of an organic polymer-diatomite composite coagulant. Background technique [0002] Wastewater from textile printing and dyeing or papermaking industries has a large amount of water, high chroma, large changes in water quality, high content of organic pollutants, and complex components. In recent years, the use of PVA slurry and new additives has made organic pollutants that are difficult to biodegrade The content in the wastewater increases substantially. It is difficult and costly to treat with a single agent or process. It is necessary to develop efficient and economical printing and dyeing wastewater treatment agents on the basis of combining different agents. Diatomaceous earth is a non-metallic mineral that is gradually formed by the natural environment from the remains of diatoms that grow in oceans or lakes and are deposited on the bottom...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/28C02F1/52C02F103/28C02F103/30
Inventor 詹树林方明晖林俊雄吕大丰杨建秀王乐平
Owner 浙江三鼎科技有限公司
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