Composite conditioner for plate-and-frame filter pressed sludge dewatering and preparation technology

A technology of sludge dehydration and plate-and-frame filtration, which is applied in water/sludge/sewage treatment, sludge treatment, chemical instruments and methods, etc., can solve problems such as low efficiency, and achieve improved efficiency, excellent effect, and high viscosity high effect

Pending Publication Date: 2021-01-19
德州万达环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a composite conditioner and pre

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0025]Example 1: A composite conditioner for the dehydration of plate and frame filter press sludge, comprising the following raw materials in parts by weight: 15 parts of oxidant, 20 parts of chitosan, 30 parts of zeolite powder, 25 parts of inorganic flocculant Parts, 80 parts of deionized water, 25 parts of inorganic high-priced cationic coagulant, 25 parts of quicklime, 30 parts of inorganic powder fine aggregate; add the inorganic flocculant and inorganic high-priced cationic coagulant according to the ratio into deionized water and mix uniformly , Inorganic flocculant can strongly adsorb colloidal particles, through adsorption, bridge, cross-linking, so as to agglomerate the colloid, inorganic high-valent cation coagulant, improve the dehydration speed. At the same time, physical and chemical changes occur, neutralizing the charge on the surface of the colloidal particles and suspended matter, reducing the potential, making the colloidal particles change from repulsion to attr...

Example Embodiment

[0026]Example 2: A composite conditioner for the dehydration of plate and frame filter press sludge, including the following raw materials in parts by weight: 20 parts of oxidant, 25 parts of chitosan, 35 parts of zeolite powder, and 30 parts of inorganic flocculant , 90 parts of deionized water, 37 parts of inorganic high-valent cationic coagulant, 27 parts of quicklime, 35 parts of inorganic powder fine aggregate; add the inorganic flocculant and inorganic high-valent cationic coagulant according to the ratio into deionized water and mix uniformly, Inorganic flocculants can strongly adsorb colloidal particles, through adsorption, bridges, and cross-linking, so that the colloids are coagulated, and inorganic high-valent cation coagulants can increase the dehydration speed. At the same time, physical and chemical changes occur, neutralizing the charge on the surface of the colloidal particles and suspended matter, reducing the potential, making the colloidal particles change from re...

Example Embodiment

[0027]Example 3: A composite conditioner for the dehydration of plate and frame filter press sludge, comprising the following raw materials in parts by weight: 25 parts of oxidant, 30 parts of chitosan, 40 parts of zeolite powder, 45 parts of inorganic flocculant , 100 parts of deionized water, 40 parts of inorganic high-priced cationic coagulant, 30 parts of quicklime, 40 parts of inorganic powder fine aggregate; add the inorganic flocculant and inorganic high-priced cationic coagulant according to the ratio into deionized water and mix uniformly, Inorganic flocculants can strongly adsorb colloidal particles, through adsorption, bridges, and cross-linking, so that the colloids are coagulated, and inorganic high-valent cation coagulants can increase the dehydration speed. At the same time, physical and chemical changes occur, neutralizing the charge on the surface of the colloidal particles and suspended matter, reducing the potential, making the colloidal particles change from repu...

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PUM

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Abstract

The invention discloses a composite conditioner for plate-and-frame filter pressed sludge dewatering, which comprises the following raw materials in parts by weight: 15-25 parts of an oxidant, 20-30 parts of chitosan, 30-40 parts of zeolite powder, 25-45 parts of an inorganic flocculant, 80-100 parts of deionized water, 25-40 parts of an inorganic high-valence cation coagulant, 25-30 parts of quicklime and 30-40 parts of inorganic powder fine aggregate; wherein the oxidant is one or more of sodium ferrate, potassium ferrate, sodium percarbonate, sodium hypochlorite, chlorine, sodium dichromate, potassium dichromate, potassium permanganate and nitric acid. Colloid particles can be strongly adsorbed through the inorganic flocculant, and colloid is condensed through adsorption, bridging and cross-linking effects. According to the composite conditioner for plate-and-frame filter pressed sludge dewatering and the preparation technology, physical and chemical changes occur at the same time,charges on the surfaces of colloidal particles and suspended solids are neutralized, the potential is reduced, the colloidal particles are changed from original repulsion to attraction, and the micelle stability is destroyed.

Description

technical field [0001] The invention relates to the technical field of sludge dewatering, in particular to a composite conditioner for plate and frame filter press sludge dewatering and a preparation technology. Background technique [0002] A sludge treatment method that removes water from fluidized primary, concentrated or digested sludge and converts it into semi-solid or solid sludge. After dehydration, the moisture content of the sludge can be reduced to 55% to 80%, depending on the nature of the sludge and sediment and the efficiency of the dewatering equipment. The further dehydration of sludge is called sludge drying, and the moisture content of dried sludge is less than 10%. Dehydration methods mainly include natural drying method, mechanical dehydration method and granulation method. Natural drying method and mechanical dehydration method are suitable for sewage sludge. The granulation method is suitable for coagulation and sedimentation of sludge. [0003] At ...

Claims

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Application Information

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IPC IPC(8): C02F11/122C02F11/148
CPCC02F11/122C02F11/148
Inventor 王建民
Owner 德州万达环保科技有限公司
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