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Composite filter-pressing centrifugal dehydrant

A technology of centrifugal dehydration and foaming agent, which is applied in the direction of dehydration/drying/concentrated sludge treatment, etc., and can solve the problems of poor separation and dehydration of urban waste mud and water

Inactive Publication Date: 2013-04-24
WENZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The traditional dehydrating agent is generally polyacrylamide, which acts as a flocculant. When using it, polyacrylamide is added to the sludge or sewage to make the particles in the sludge or sewage aggregate to form flocs, which is convenient for the next step of pressure filtration treatment, but This dehydrating agent has poor effect on the separation and dehydration of urban waste mud mud and water

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Embodiment 1, the mass mixing ratio is 0.06 of lime 1.4, gypsum 0.8, fly ash 2.0, and PAM0.2 foaming agent. The above materials can be mixed. In the experiment, the mud is 500 milliliters, and the unit pressure is 0.1 MPa According to the experiment, the water output at each time period is a, the press filter time is 5 minutes, and the water output is 73 milliliters; b, the press filter time is 10 minutes, and the water output is 106 ml; c, the press filter time is 15 minutes, The water output is 131 ml, d, the pressure filtration time is 20 minutes, the water output is 153 ml, e, the pressure filtration time is 25 minutes, the water output is 177 ml, f, the pressure filtration time is 30 minutes, the water output is 194 ml, g, the pressure filtration time is 35 Minutes, water output 207 ml, h, pressure filtration time 75 minutes, water output 280 ml. In this embodiment, if no gypsum is added and the proportions of other materials are the same, the water output in each ...

Embodiment 2

[0011] Embodiment 2, the mass mixing ratio is 0.08 of lime 1.2, gypsum 1.0, fly ash 2.0, and PAM0.1 foaming agent. The above materials can be mixed. In the experiment, the mud is 500 milliliters, and the unit pressure is 0.1 MPa According to the experiment, the water output in each time period is a, the press filter time is 5 minutes, and the water output is 74 ml; b, the press filter time is 10 minutes, and the water output is 104 ml; c, the press filter time is 15 minutes, The water output is 128 ml, d, the pressure filtration time is 20 minutes, the water output is 148 ml, e, the pressure filtration time is 25 minutes, the water output is 165 ml, f, the pressure filtration time is 30 minutes, the water output is 180 ml, g, the pressure filtration time is 35 Minutes, water output 194 ml, h, pressure filtration time 75 minutes, water output 272 ml. In this embodiment, if no gypsum is added and the proportions of other materials are the same, the water output in each time peri...

Embodiment 3

[0012] Embodiment 3, the mass mixing ratio is lime 1.0, gypsum 1.0, fly ash 1.5, PAM0.2, foaming agent 0.09, the above materials can be mixed, the mud in the experiment is 500 milliliters, and the unit pressure is 0.1 million Pa filter press filter mud, after experiments, the water output at each time period is a, the filter press time is 5 minutes, the water output is 75 ml, b, the filter press time is 10 minutes, the water output is 103 ml, c, the filter press time is 15 minutes 134 milliliters of water output, d, 20 minutes of press filtration time, 152 milliliters of water output, e, 25 minutes of press filtration time, 169 milliliters of water output, f, 30 minutes of press filtration time, 192 milliliters of water output, g, press filtration time 35 minutes, the water output is 206 ml, h, the pressure filtration time is 75 minutes, the water output is 268 ml. In this embodiment, if no gypsum is added and the proportions of other materials are the same, the water output i...

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PUM

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Abstract

The invention discloses a composite filter-pressing centrifugal dehydrant, which comprises lime, PAM and a foaming agent, wherein the mass ratio of the lime, the PAM and the foaming agent is (1.0-1.4):(1-0.3):( 0.05-0.1). The composite filter-pressing centrifugal dehydrant disclosed by the invention is high in dehydrating efficiency.

Description

technical field [0001] The invention relates to a composite filter press centrifugal dehydrating agent used in the construction industry, which can cooperate with filter press centrifugal equipment to perform mud-water separation and solidification treatment on urban waste mud, silt and sludge. Background technique [0002] The traditional dehydrating agent is generally polyacrylamide, which acts as a flocculant. When using it, polyacrylamide is added to the sludge or sewage to make the particles in the sludge or sewage aggregate to form flocs, which is beneficial to the next step of filter press treatment, but This dehydrating agent is less effective for the separation and dehydration of urban waste mud mud and water. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a composite press filter centrifugal dehydrating agent with higher dehydration efficiency. [0004] For this reason, the composite press filter cent...

Claims

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Application Information

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IPC IPC(8): C02F11/14
Inventor 孙林柱杨芳
Owner WENZHOU UNIVERSITY
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