Sewage sludge treatment device

A treatment device and technology for sewage sludge, applied in sludge treatment, dehydration/drying/concentrated sludge treatment, water/sludge/sewage treatment, etc., can solve the problem of increasing sludge treatment volume, high cost and low freezing efficiency And other issues

Inactive Publication Date: 2014-10-15
CHINA JILIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, the present invention aims at the problems in the above-mentioned prior art that increasing the flocculant will increase the sludge treatment capacity, low freezing efficie...

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  • Sewage sludge treatment device
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Embodiment Construction

[0015] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0016] As shown in the figure, a sewage sludge treatment device of the present invention includes a filter press device 1, a crushing device 2 and a drying device 3. The filter press device 1 carries out pressure filtration treatment on the sludge and is crushed by the crushing device 2. After the sludge is crushed, it enters the drying device 3 for drying treatment;

[0017] The sewage sludge treatment device also includes a sludge freezing container 4 and a freeze-drying energy circulation system, and the freeze-drying energy circulation system includes a compressor 5, a first evaporator 6, a condenser 7 and a sludge freezer. The second evaporator 8 in the container 4, the gas outlet end of the compressor 5 is connected with the condenser 6, the condenser 7 is connected with the first evaporator 6 through the throttling element 9, and the fir...

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Abstract

The invention discloses a sewage sludge treatment device which comprises a filter pressing device 1, a crushing device 2 and a drying device 3. The sewage sludge treatment device further comprises a sludge freezing container 4 and a freeze drying energy circulating system. The freeze drying energy circulating system comprises a compressor 5, a first evaporator 6, a condenser 7 and a second evaporator 8 arranged in the sludge freezing container. The air outlet end of the compressor is connected with the condenser, the condenser is connected with the first evaporator through a throttling element, the first evaporator is connected with the air inlet end of the compressor through the second evaporator, the condenser is communicated with the bottom of the drying device through a gas pipeline 10, the first evaporator is communicated with the top of the drying device through a gas pipeline, and the condenser is communicated with the first evaporator through a gas pipeline. According to the sewage sludge treatment device, chemical agents do not need to be added to sludge, the sludge treatment amount is not increased in the treatment process, and recycling of working medium energy greatly improves sludge freezing efficiency and heat utilization rate.

Description

technical field [0001] The invention relates to the field of sewage sludge treatment, in particular to a sewage sludge treatment device. Background technique [0002] A large amount of sludge is produced in the process of sewage treatment, which accounts for about 0.3%-0.5% of the treated water. The investment and operation cost of sludge treatment are very huge, and the cost of sludge treatment generally accounts for 20% of the operating cost of sewage treatment plants. %-50%, bringing a heavy burden to sewage treatment. Sludge dehydration is a key link in sludge treatment, and it is of great significance to the subsequent drying, transportation, landfill, and resource utilization of sludge. The key to sludge dewatering is to improve the dewatering performance of sludge. The current traditional treatment method is to condition it first by adding flocculant, and then perform mechanical dehydration by filter press to form sludge with a moisture content of about 60% and trans...

Claims

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Application Information

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IPC IPC(8): C02F11/00C02F11/20C02F11/12
Inventor 饶宾期周玲
Owner CHINA JILIANG UNIV
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