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Circulating municipal sludge treatment system and method thereof

An urban sludge and treatment system technology, applied in the fields of sludge treatment, water/sludge/sewage treatment, dehydration/drying/concentrated sludge treatment, etc. To achieve the effect of improving efficiency and pertinence, improving efficiency and effect, and improving efficiency

Inactive Publication Date: 2017-12-19
安吉晨源环保资源再生利用有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Traditional sludge treatment and concentration methods can be divided into three methods: gravity concentration, air flotation concentration and centrifugal concentration. In the actual sludge treatment process, most of the sludge is concentrated by a single concentration method. Poor, and further affect the drying efficiency
Municipal sludge includes solid particles such as mud sand, fibers, animal and plant residues and coagulated flocs mixed into domestic sewage or industrial wastewater. Due to the presence of impurities such as large animal and plant residues, the drying process takes a long time. Thus affecting the drying effect and reducing the efficiency of sludge treatment
In addition, the traditional sludge treatment process is cumbersome, and the recycling of water resources cannot be realized in the sludge treatment process, resulting in waste of resources

Method used

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  • Circulating municipal sludge treatment system and method thereof
  • Circulating municipal sludge treatment system and method thereof
  • Circulating municipal sludge treatment system and method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Such as Figure 1-5 As shown, a recyclable municipal sludge treatment system includes a passivation kettle 2 connected with a sludge discharge pipe 1, a high-temperature hydrolysis acidification reaction tank 3, a gravity concentration tank 4, a crusher 5, and a dehydration filter press 6. And drier 7, and desulfurization tower 8 and water collection tank 9, described high-temperature hydrolysis acidification reaction tank 3 and drier 7 are respectively connected with the air inlet of desulfurization tower 8 by waste gas pipe 10, and described drier 7 is provided with A steam heating mechanism, the steam heating mechanism is connected to the water inlet of the water collecting tank 9 , and the water outlet of the water collecting tank 9 is connected to the water inlet of the desulfurization tower 8 .

[0034] The passivation kettle 2 is provided with a stirrer, which can fully contact the heavy metal passivation material with the heavy metal in the sludge, and improve t...

Embodiment 2

[0053] A recyclable municipal sludge treatment method is characterized in that: comprising the following specific steps:

[0054] (1) Heavy metal passivation: Pour the sludge into the passivation kettle, then add the passivation agent into the passivation kettle 2, start the agitator, and fully mix the passivation agent and the sludge;

[0055] The passivation agent is quicklime, fly ash or clay, which can be added to the passivation tank to increase the pH value of the sludge, convert heavy metals into hydroxides and other precipitates, and achieve the effect of passivating metals and killing the original bacteria.

[0056] (2) Hydrolytic acidification: Add the sludge after the reaction in (1) into the high-temperature hydrolytic acidification reaction tank, and heat it with an electric heater at a temperature of 35-55°C for 3-5 days;

[0057] High-temperature hydrolytic acidification can increase the wall breaking rate of microbial cell walls in sludge, so as to fully releas...

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Abstract

The invention discloses a circulating municipal sludge treatment system and a method thereof. The system comprises a passivation kettle connected by a mud pipe, a high-temperature hydrolytic acidification reaction tank, a gravity concentration box, a crusher, a dehydration press filter and a dryer which are connected in sequence, and further comprises a desulfurizing tower and a water collection tank, wherein the high-temperature hydrolytic acidification reaction tank and the dryer are respectively connected with the air inlet of the desulfurizing tower through a waste gas pipe; a steam heating mechanism is arranged inside the dryer and is connected with a water inlet of the water collection tank; and the water outlet of the water collection tank is connected with the water inlet of the desulfurizing tower. According to the system disclosed by the invention, with the adoption of sludge thickening twice, and due to the grinding treatment of solid sludge impurities increased between the sludge thickening twice, the drying effect and overall treatment efficiency of the sludge can be improved, and waste of resources is reduced.

Description

technical field [0001] The invention relates to a recyclable municipal sludge treatment system and a method thereof, and is applicable to the technical field of municipal sludge treatment. Background technique [0002] With the increasing construction of urban sewage treatment plants in my country, the rate of urban sewage treatment has increased rapidly, the generation of urban sludge has increased sharply, and the problems of sludge treatment and disposal have become increasingly prominent. At present, most of the urban sewage treatment plants in our country use concentrated and dehydrated sludge to transport to landfill or use it as agricultural fertilizer. [0003] Traditional sludge treatment and concentration methods can be divided into three methods: gravity concentration, air flotation concentration and centrifugal concentration. In the actual sludge treatment process, most of the sludge is concentrated by a single concentration method. Poor, and further affect the ...

Claims

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Application Information

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IPC IPC(8): C02F11/00C02F11/12B01D53/48B01D53/78
CPCB01D53/48B01D53/78C02F11/004C02F11/12C02F11/121C02F11/122
Inventor 杨宇清杨诚朱蕾谊
Owner 安吉晨源环保资源再生利用有限公司
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