Novel sludge deep dehydration rinsing agent

A technology of deep dewatering and sludge conditioning, applied in the direction of dewatering/drying/concentrating sludge treatment, etc., can solve the problems of large corrosion of ferric chloride, increase and enlargement of sludge filtrate treatment, etc., to improve the effect and increase the strength and combustion value, the effect of reducing cost

Inactive Publication Date: 2013-10-02
KANGTAI JIANGSU ENVIRONMENTAL PROTECTION LTD BY SHARE LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the conventional sludge conditioners are ferric chloride + lime. This method can achieve a certain effect of sludge modification, but ferric chloride is more corrosive to the equipment, and the dosage of the agent is large. A large amount of chloride ions increase in the filtrate, which makes it very difficult to treat the sludge filtrate
There is also the addition of dry solids to the sludge to increase the solid content of the sludge. This method does not change the characteristics of the sludge, but also increases the volume of the sludge and the difficulty of treatment.

Method used

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  • Novel sludge deep dehydration rinsing agent

Examples

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Effect test

Embodiment 1

[0015] A sludge deep dehydration conditioner is composed of the following components: 30kg of activated carbon powder, 30kg of fly ash, 30kg of quicklime powder, and 10kg of polyaluminum ferric chloride.

[0016] A method for deep dewatering of sludge (equipment used such as figure 1 shown), follow the steps below:

[0017] (1) Add 30kg of activated carbon powder, 30kg of fly ash, and 30kg of quicklime powder into premixer 1 and mix uniformly to make sludge conditioner A;

[0018] (2) 10kg of polyaluminum ferric chloride is added to the dispensing tank 2, and water is added to form a solution with a mass fraction of 100g / L to make sludge conditioner B;

[0019] (3) Add the sludge conditioner A into 1000kg of water-containing sludge through the premixer and stir evenly, then the sludge conditioner B is pumped into the premixer 1 through the booster pump 3 for mechanical mixing, and then passed through the sludge pump 5 Pump into the sludge deep dehydration equipment 4 for mec...

Embodiment 2

[0021] A sludge deep dehydration conditioner is composed of the following components: 5kg of activated carbon powder, 70kg of fly ash, 5kg of quicklime powder, and 20kg of polyaluminum ferric chloride.

[0022] A method for deep dewatering of sludge (equipment used such as figure 1 shown), follow the steps below:

[0023] (1) Add 5 kg of activated carbon powder, 70 kg of fly ash, and 5 kg of quicklime powder into premixer 1 and mix uniformly to make sludge conditioner A;

[0024] (2) 20kg of polyaluminum ferric chloride is added to the dispensing tank 2, and water is added to form a solution with a mass fraction of 50g / L to make sludge conditioner B;

[0025] (3) Add the sludge conditioner A into 1500kg of water-containing sludge through the premixer and stir evenly, then the sludge conditioner B is pumped into the premixer 1 through the booster pump 3 for mechanical mixing, and then through the sludge pump 5 Pump into the sludge deep dehydration equipment 4 for mechanical d...

Embodiment 3

[0027] A sludge deep dehydration conditioner is composed of the following components: 15kg of activated carbon powder, 62kg of fly ash, 15kg of quicklime powder, and 8kg of polyaluminum ferric chloride.

[0028] A method for deep dewatering of sludge (equipment used such as figure 1 shown), follow the steps below:

[0029] (1) Add 15kg of activated carbon powder, 62kg of fly ash, and 15kg of quicklime powder into premixer 1 and mix uniformly to make sludge conditioner A;

[0030] (2) 8kg of polyaluminum ferric chloride is added to the dispensing tank 2, and water is added to form a solution with a mass fraction of 200g / L to make sludge conditioner B;

[0031] (3) Add the sludge conditioner A into 1500kg of water-containing sludge through the premixer and stir evenly, then the sludge conditioner B is pumped into the premixer 1 through the booster pump 3 for mechanical mixing, and then through the sludge pump 5 Pump into the sludge deep dehydration equipment 4 for mechanical d...

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Abstract

The invention discloses belongs to the technical field of sludge deep dehydration and relates to a novel sludge deep dehydration rinsing agent. The rinsing agent comprises the following substance according to weight percentage: 5 to 30 percent of activated charcoal powder, 30 to 70 percent of fly ash, 5 to 30 percent of quicklime powder, and 1 to 20 percent of polyaluminum ferric chloride. The invention further discloses a using method of the rinsing agent. In the invention, the rinsing agent added is cheap material, and replaces rinsing agents such as conventional polyacrylamide flocculating agent, iron trichloride, calcium oxide and the like, and after dehydration, sludge cakes can be used as raw material for building material and fuel.

Description

technical field [0001] The invention belongs to the technical field of sludge deep dehydration, and in particular relates to a novel sludge deep dehydration conditioner. Background technique [0002] Sludge dewatering is one of the most expensive but critical processes in sludge treatment. The performance of sludge dewatering is directly related to the quality of the entire sludge treatment system. At present, most of the conventional sludge conditioners are ferric chloride + lime. This method can achieve a certain effect of sludge modification, but ferric chloride is more corrosive to the equipment, and the dosage of the agent is large. A large amount of chloride ions increase in the filtrate, which makes the treatment of the sludge filtrate very difficult. There is also the addition of dry solids to the sludge to increase the solid content of the sludge. This method does not change the characteristics of the sludge, but also increases the volume of the sludge and the diff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/14
Inventor 花成巍贾少伟
Owner KANGTAI JIANGSU ENVIRONMENTAL PROTECTION LTD BY SHARE LTD
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