A kind of sludge wall breaking treatment agent, method and deep dehydration method

A treatment method and sludge technology, applied in sludge treatment, water/sludge/sewage treatment, multi-stage water treatment, etc., can solve problems such as low treatment efficiency, decreased sludge combustion value, increased environmental pollution, etc., to achieve Reduce transportation costs, low investment costs, and good treatment effects

Active Publication Date: 2021-02-12
深圳瑞新达生态科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The most conventional chemical method is to use ferric chloride combined with calcium oxide polymer flocculant treatment, which can achieve a good effect on sludge solids, but the biggest drawback is that the addition of calcium oxide artificially increases the weight of sludge, which brings additional sludge. In addition, the production of calcium oxide is a high-carbon emission industry. The total environmental pollution brought by the entire industrial chain will not decrease but will increase. At the same time, the inert characteristics of calcium oxide have caused pollution. The decrease in sludge combustion value is not conducive to the subsequent treatment of sludge, so some areas have begun to limit the addition of calcium oxide in the sludge treatment process
In the application of biological method, acidophilic Thiobacillus ferrooxidans is used to leach sludge, but due to the characteristics of biological method, the treatment time is too long in actual application, resulting in low treatment efficiency

Method used

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  • A kind of sludge wall breaking treatment agent, method and deep dehydration method
  • A kind of sludge wall breaking treatment agent, method and deep dehydration method
  • A kind of sludge wall breaking treatment agent, method and deep dehydration method

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Embodiment 1

[0037] A sludge wall breaking treatment method, comprising:

[0038] S10. Add the first conditioner to the sludge after gravity concentration, the first conditioner is OH-containing - Inorganic alkali, present embodiment adopts sodium hydroxide solution, concentration 40%, the consumption of described first conditioner is 3% of described sludge; Quickly stir 1.5min, adjust sludge pH8~11, slowly stir 4min ;

[0039] S20. Add the second conditioning agent and the third conditioning agent, the second conditioning agent is hydrogen peroxide, the amount of hydrogen peroxide is 2% of the sludge; the third conditioning agent is organic high Molecule, the organic polymer is hydroxyethylidene diphosphonic acid; the dosage of the third conditioner is 0.5% of the sludge; stir rapidly for 1.5min and then stir slowly for 8min to obtain the sludge after wall breaking.

Embodiment 2

[0041] A sludge wall breaking treatment method, comprising:

[0042] S10. Add the first conditioner to the sludge after gravity concentration, the first conditioner is OH-containing - The inorganic alkali, the present embodiment adopts sodium hydroxide solution, concentration 30%, the consumption of described first conditioning agent is 4% of described sludge; Quickly stir 2min, adjust sludge pH8~11, slowly stir 5min;

[0043] S20. Add the second conditioner and the third conditioner again, the second conditioner is hydrogen peroxide, and the amount of hydrogen peroxide is 4% of the sludge; the third conditioner is an inorganic salt , the inorganic salt is sodium silicate; the amount of the third conditioning agent is 1% of the sludge; after stirring rapidly for 2 minutes, stir slowly for 10 minutes to obtain the sludge after wall breaking.

Embodiment 3

[0045] A sludge wall breaking treatment method, comprising:

[0046] S10. Add the first conditioner to the sludge after gravity concentration, the first conditioner is OH-containing -Inorganic alkali, present embodiment adopts sodium hydroxide solution, concentration 50%, the consumption of described first conditioner is 2% of described sludge; Quickly stir 1min, adjust sludge pH8~11, slowly stir 3min;

[0047] S20. Add the second conditioning agent and the third conditioning agent, the second conditioning agent is hydrogen peroxide, the amount of hydrogen peroxide is 1% of the sludge; the third conditioning agent is organic high molecule, the organic polymer is aminotrimethylene phosphonic acid; the dosage of the third conditioner is 0.2% of the sludge; stir rapidly for 1 minute and then stir slowly for 6 minutes to obtain the sludge after wall breaking.

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Abstract

The invention relates to the field of sludge treatment, and provides a sludge wall-breaking treatment agent, a method and a deep dewatering method, which are used to solve the problem that the sludge moisture content is difficult to further reduce. A sludge wall-breaking treatment agent provided by the present invention comprises a first conditioning agent, a second conditioning agent and a third conditioning agent; the first conditioning agent, the second conditioning agent, and the third conditioning agent are respectively Independent packaging; the first conditioning agent is an inorganic base; the second conditioning agent is hydrogen peroxide; the third conditioning agent is one of organic polymers or inorganic salts. The wall breaking method and dewatering process have low investment cost, simple operation, good treatment effect, no addition of calcium oxide and calcium hydroxide, no reduction of the calorific value of sludge, and no impact on subsequent treatment.

Description

technical field [0001] The invention relates to the field of sludge treatment, in particular to a sludge wall-breaking treatment agent, method and deep dehydration method. Background technique [0002] Sludge is a derivative of urban sewage treatment, heavy industry, and non-ferrous metal smelting enterprises. It usually contains pathogenic microorganisms, parasitic eggs, harmful heavy metals, and a large number of refractory substances. If the treatment is not thorough, it will cause secondary pollution to the environment. Therefore, there is a saying in the industry that "water control does not control mud, and pollution transfers greatly". [0003] Sludge is a combination of organic and inorganic substances containing a large amount of water. The most basic and important step in the "harmless, stabilized, reduced, and resourceful" treatment of sludge is dehydration. Due to the moisture contained in sludge It is mainly divided into four types: interstitial water, surface...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F11/143C02F11/147C02F11/122
CPCC02F11/122C02F2301/08C02F11/143C02F11/147
Inventor 全军
Owner 深圳瑞新达生态科技有限公司
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