Deep dewatering equipment and method for electrochemical sludge

A deep dehydration and electrochemical technology, applied in electrochemical sludge treatment, chemical instruments and methods, fixed/solidified sludge treatment, etc., can solve the problems of sludge increment, inability to remove heavy metals, high transportation costs, etc.

Pending Publication Date: 2018-02-13
SHANGHAI TECHASE ENVIRONMENT PROTECTION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The moisture content of the sludge is 78% to 85%. Due to the large volume and high moisture content of the sludge, it will occupy a large area, high transportation costs, low calorific value, and any kind of mechanical dehydration cannot remove Remo

Method used

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  • Deep dewatering equipment and method for electrochemical sludge
  • Deep dewatering equipment and method for electrochemical sludge
  • Deep dewatering equipment and method for electrochemical sludge

Examples

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Embodiment 1

[0036] Such as Figure 1-Figure 5 As shown, the present invention is an electrochemical sludge deep dewatering device, which includes: a main frame 1, a feeder 2, a sludge conveyor belt 3, a conveyor belt driving mechanism 4, and a plurality of electrochemical sludge deep dewatering mechanisms connected in series 5. Mud cake separation mechanism 6. Sludge conveyor belt descaling and cleaning system 7. Special DC power supply 8. Power hydraulic station 9. Shell 10. Electrical control system 11.

[0037] The host frame 1 supports and fixes the entire device.

[0038] The feeder 2 is horizontally arranged directly above the front of the sludge conveyor belt 3, and is mainly composed of a drive motor 21, a silo 22, a screw 23, a blocking plate 24, a bearing 25, an adjustable stroke cylinder 26, and a valve 27. The feeder 2 has a cavity, the upper part of the front end of the cavity is provided with a feed bin 22, the screw rod 23 with blades is installed in the cavity through a b...

Embodiment 2

[0053] Such as Image 6 The shown electrochemical sludge deep dewatering equipment of the present invention adopts an upper and lower two-layer structure, that is, in order to increase the processing capacity and save space, an upper and lower layer as described in Example 1 is arranged in the same shell. A complete set of electrochemical sludge deep dewatering equipment (including: main frame 1, feeder 2, sludge conveyor belt 3, conveyor belt drive mechanism 4, two sets of electrochemical sludge deep dewatering mechanism 5 connected in series, mud cake separation mechanism 6 ), that is, each layer is equipped with two sets of electrochemical sludge deep dewatering mechanisms 5 connected in series. The upper layer is arranged on the lower layer through the supporting frame 12 . The parallel connection mode is adopted between the layers.

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PUM

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Abstract

The invention discloses an electrochemical sludge deep dewatering device and a sludge deep dewatering method. The equipment includes mainframe support, feeder, sludge conveyor belt, conveyor belt drive mechanism, one or more series-connected electrochemical sludge deep dewatering mechanisms, mud cake separation mechanism, sludge conveyor belt descaling and cleaning system; The deep mud dewatering mechanism is composed of lower plate, lower plate electrode, upper plate, upper plate electrode, electrode insulation plate, upper plate sealing cover, sealing spring, spring pull rod, pressurized hydraulic oil cylinder, and beam. The present invention utilizes the electrochemical phenomena and mechanical pressure after the sludge is added to the DC electric field for dehydration; it can reduce the moisture content of the activated excess sludge from 85% to below 40% at one time without adding any conditioning measures , to reduce the volume of the remaining sludge by more than 2/3, and through electrochemical action, it can destroy the microbial cell membrane in the sludge, kill roundworm eggs and pathogenic microorganisms in the sludge, and remove some heavy metals.

Description

technical field [0001] The invention belongs to the technical field of sludge deep dewatering, and relates to an electrochemical sludge deep dewatering device and a sludge deep dewatering method. Background technique [0002] In recent years, my country's sludge treatment industry has developed rapidly. Benefiting from the continuous improvement of the production technology of the sludge treatment industry and the continuous expansion of the downstream demand market, the development situation of the sludge treatment industry in the domestic and international markets is very optimistic. According to the statistics of the Ministry of Housing and Urban-Rural Development, the national urban sludge treatment and disposal scale will reach 25,000kt / a (80% water content) during the "Twelfth Five-Year Plan" period. Sludge dewatering is an important unit operation in the sewage treatment process, and its dehydration degree is directly related to the subsequent disposal cost and resour...

Claims

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Application Information

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IPC IPC(8): C02F11/00C02F11/12
CPCC02F11/006C02F11/008C02F11/12C02F11/121C02F2303/06
Inventor 刘道广孙刚范张文标
Owner SHANGHAI TECHASE ENVIRONMENT PROTECTION
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