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Advanced treatment method for sewage sludge

A technology for advanced treatment and sewage sludge, which is applied in the directions of sludge treatment, dehydration/drying/thickened sludge treatment, water/sludge/sewage treatment, etc. It can solve the problem of low freezing efficiency, increased sludge treatment capacity, and inability to recycle Incineration waste heat and other issues

Active Publication Date: 2016-06-22
杭州浩斌科技有限公司
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Problems solved by technology

[0006] In view of this, the present invention aims at the problems in the above-mentioned prior art that increasing the flocculant will increase the amount of sludge treatment and the freezing efficiency is low, and the waste heat from incineration cannot be recovered. Sewage sludge advanced treatment method with high and high energy utilization rate

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  • Advanced treatment method for sewage sludge
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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0024] As shown in the figure, a sewage sludge advanced treatment method of the present invention is realized based on a sludge treatment device, which includes a filter press device 1, a crushing device 2, a drying device 3, an incineration device 16 and a waste heat boiler 17, The filter press device 1 performs pressure filtration treatment on the sludge, and then the crushing device 2 carries out the crushing treatment. After the sludge is crushed, it enters the drying device 3 for drying treatment, and the dried sludge particles are sent to the incineration device 16 for incineration (from the drying device. The feeding port enters the incineration device through the conveying mechanism 23), and the high-temperature flue gas generated by incineration enters the waste heat boiler 17;

[0025]The sewage sludge treatment device also includes a...

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Abstract

The invention discloses an advanced treatment method for sewage sludge.The method is based on a sewage sludge treatment device, and the sewage sludge treatment device comprises a sludge refrigerating container(4), a freeze drying energy-cyclic system and a waste heat recovery device, wherein the freeze drying energy-cyclic system comprises a compressor (5), an evaporator (6), a condenser (7) and a first heat exchanger (8) arranged in the sludge refrigerating container.An air outlet end of the compressor is connected with the condenser which is connected with the evaporator through restricting elements.The evaporator is connected with an air inlet end of the compressor through the first heat exchanger.The condenser is communicated with the bottom of a dryer through a gas pipeline (10), the evaporator is in through connection with the top of the dryer through the gas pipeline, and at the same time, the condenser is in through connection with the evaporator through the gas pipeline.The recovered heat is used for sludge drying of the dryer and for sludge thawing.According to the advanced treatment method, the sludge treating capacity will not be increased in the treating process, and the sludge refrigeration efficiency and heat use ratio of the sludge can be improved by the cyclic utilization of the working medium energy.

Description

[0001] This application is a divisional application with application number 201410381245.3, application date of August 4, 2014, and invention name "method for advanced treatment of sewage sludge". technical field [0002] The invention relates to the field of sewage sludge treatment, in particular to a method for advanced treatment of sewage sludge. Background technique [0003] 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%, which brings a heavy burden to sewage treatment. The key to sludge dewatering is to improve the dewatering performance of sludge. The current traditional treatment method is to condition by adding flocculant first, and then perform mechanical dehydration by filter press to form sludge with ...

Claims

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Application Information

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IPC IPC(8): C02F11/00C02F11/20C02F11/12
CPCC02F11/00C02F11/122C02F11/20C02F2303/06
Inventor 饶宾期欧阳华兵
Owner 杭州浩斌科技有限公司
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