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Deep dewatering conditioning method of colistin sulfate residues

A technology of Myxobacterium sulfate and deep dehydration, which is applied in chemical instruments and methods, multi-stage water/sewage treatment, water/sludge/sewage treatment, etc. The bacillus slag has difficulty in moisture and other problems, and achieves the effects of secondary drying, low cost, and avoiding secondary pollution

Active Publication Date: 2013-04-03
SHANDONG LUKANG ZHONGHE ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a deep dehydration conditioning method for Myxobacterium sulfate slag, which overcomes the problem that the moisture content of Myxobacterium sulfate slag is too high to be dehydrated by conventional methods and the problem of high energy consumption caused by thermal drying and dehydration

Method used

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Examples

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Effect test

Embodiment 1

[0021] Take 10L of the bacterial residue stock solution, check the moisture content of the bacterial residue is 95%, pH=6.0, add 2mol / L hydrochloric acid solution and stir while checking the pH value to pH=4.8, add 50ml of polyamine solution with a concentration of 5‰, and stir for 10min , the viscosity of the solution decreases under the action of polyamine, add 50ml of 10% PAC solution, stir for 10min, because PAC and polyamine have the same charge, the viscosity of the solution continues to decrease under the action of charge, slowly add 1‰ concentration of CPAM until flocs appear in the bacterial residue liquid, the floc particles are 2-4mm, the dosage is 100ml, continue to stir for 2 minutes and then stop stirring. The conditioned bacteria residue enters the 250-type small plate and frame machine, and the feeding pressure is 1.0MPa. When the filtrate is discontinuous, stop the pressure filtration. After the discontinuity, stop the filter press, unload to get two complete ...

Embodiment 2

[0023] 150M 2 Plate and frame filter press equipment, equipped with a 20-ton fungal residue conditioning tank (including PH online detection), an acid-base and other pharmaceutical preparation tank with the function of quantitatively adding medicine to the conditioning tank, and pouring 20m into the conditioning tank 3 Bacteria slag stock solution, test the moisture content of the slag to be 95%, pH=6.3, start the conditioning tank to stir, add 2mol / L hydrochloric acid to pH=4.7, stop adding acid, add 100L of 5‰polyamine quantitatively after stirring for 5min, continue Add 10% PAC100L quantitatively, stir for 10 minutes, until the fungus residue is evenly mixed, add 1‰ CPAM until the fungus residue forms stable flocs, the floc particles are 2-4mm, continue to stir for 5 minutes, stop stirring after the flocs are stable. The conditioned bacterial residue liquid enters the plate and frame filter press through a large-flow low-pressure pump, and the feeding force is 1.0MPa. After...

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PUM

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Abstract

The invention discloses a deep dewatering conditioning method of colistin sulfate residues. Acid is added for reducing the pH value at normal temperature, so that the liquidity is enhanced; a polyamine serves as a dispersant to reduce the viscosity of colistin sulfate residues; PAC and the polyamine are used together so as to reduce the application amount of polyamine, and the PAC also serves as a floc skeleton to improve the hardness of filter residues; due to the purging and trapping functions of CPAM, tiny flocs in colistin sulfate residues can be condensed to carry out effective solid-liquid separation, so that the filtration velocity of residue dewatering is improved, filter liquor enters a filter-press device for filter-pressing, then the filter liquor is introduced into a biochemical treating pond to be treated, filter residues are discharged, and the water content is detected. The water content of dry colistin sulfate residues treated by using the method disclosed by the invention is not higher than 60%; because the water content is low, the secondary drying is facilitated, and the water content of colistin sulfate residues can be reduced to 45-50% after the colistin sulfate residues are naturally dried with air for 1-2 days, therefore, the method is applicable to the large-scale production of low-cost minimization treatment of colistin sulfate residues.

Description

technical field [0001] The invention relates to a deep dehydration conditioning technology of myxobacterium sulfate slag, which is a method for deep water removal of fermentation slag at normal temperature. Background technique [0002] Colistin Sulfate, also known as Colistin Sulfate, Colistin, Polymyxin E (Polymyxin E), Antiene, etc., is a white or near-white powder, odorless, bitter and hygroscopic, and easily soluble In water, slightly soluble in methanol, ethanol, soluble in acetone, ether, etc., free alkali is slightly soluble in water. It is stable in the range of pH3-7.5. [0003] Myxobacterium sulfate slag is a by-product produced during the production of colistin sulfate. It is a viscous solid-liquid mixture with a pH of 5.5-6.5, a water content of 90-95% by mass, an oil content of 1%, and a protein content of 2%. The organic matter content is 4%, light yellow or yellow viscous liquid, after a certain period of time, it will thicken and deteriorate due to anaerob...

Claims

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Application Information

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IPC IPC(8): C02F9/04
Inventor 王国庆
Owner SHANDONG LUKANG ZHONGHE ENVIRONMENTAL PROTECTION TECH
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