Vacuum electroosmosis curing water supply plant sludge device and use method thereof

A water supply plant sludge and electroosmosis technology, applied in the direction of dehydration/drying/thickened sludge treatment, etc., can solve the problems of waste of power resources and human resources, reduce dehydration rate and efficiency, slow electroosmosis, etc., and achieve dehydration rate The effects of increasing slowly, increasing interface resistance, and increasing current density

Active Publication Date: 2015-04-08
江苏海壹环境科技有限公司
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

The combination of vacuum and electroosmosis to treat water supply sludge also has difficulties. First, water electrolysis will occur at both ends of the electrode, which not only changes the local pH value, but also leads to the re-complexation and precipitation of metal ions in the sludge in a free state. , and the electrolyzed hydrogen ions and hydroxide ions cannot be annihilated into water molecules under the action of the electric field force, which reduces

Method used

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  • Vacuum electroosmosis curing water supply plant sludge device and use method thereof
  • Vacuum electroosmosis curing water supply plant sludge device and use method thereof
  • Vacuum electroosmosis curing water supply plant sludge device and use method thereof

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Embodiment 1

[0040] Such as Figure 1~3 As shown, a vacuum electroosmotic solidification device for sludge in a water supply plant includes a DC power supply 1, a sludge tank 4, a timing switch 12, a vacuum tank 8 and a SPDT switch 6, and the SPDT switch 6 passes through a wire and a DC power supply 1 Connection, by changing the contact mode of the single-pole double-throw switch 6, the current direction of the DC power supply 1 can be switched, and the positive and negative electrodes can be switched. Vacuum pumps 5 are connected to timing switch 12, and AC power supply 11 is connected to control the opening and closing of timing switch 12. Timing switch 12 is used to control the opening time of vacuum pump 5 and the time interval between two openings to discharge the enriched moisture. A vacuum gauge 9 is arranged above the vacuum tank 8 , and a drain pipe 13 is provided at the bottom of the vacuum tank 8 .

[0041] The sludge tank 4 is provided with a cathode metal 2 and an anode metal...

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Abstract

The invention discloses a vacuum electroosmosis curing water supply plant sludge device and a use method thereof. The positive electrode and the negative electrode of a direct-current power supply of the device are respectively connected with negative electrode metal and positive electrode metal inside a sludge tank; the other ends of the negative electrode metal and the positive electrode metal are respectively connected with vacuum tanks through drain tubes; vacuum pumps and valve are arranged on the drain tubes; the vacuum pumps are both connected with a timing switch. According to the method, curing is performed firstly and electroosmosis is performed secondly, and the timing switch is adopted to control the vacuum pumps to be opened or closed. The vacuum electroosmosis curing water supply plant sludge device is good in water supply sludge curing effect, the sludge obtained after metal ions are removed meets the national soil reuse discharge standard, and the operation cost is low when being compared with that of a conventional vacuum combined electroosmosis device.

Description

technical field [0001] The invention relates to a water supply sludge solidification device, in particular to a vacuum electroosmosis solidification water supply plant sludge device and a use method thereof. Background technique [0002] Municipal sludge is divided into water supply plant sludge, sewage plant sludge and chemical sludge. However, in terms of output, water supply plant sludge and sewage plant sludge have a large output, which is convenient to collect and can be processed in a centralized manner. Both types of sludge have the following characteristics: [0003] (1) The moisture content is high, and the moisture content of the sludge is as high as 97%. The moisture in the sludge is divided into free water, interstitial water, surface bound water and molecular bound water. Generally, free water can evaporate through Fenghua, and interstitial water can be removed by coagulation and centrifugation, but bound water is difficult to remove. [0004] ...

Claims

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Application Information

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IPC IPC(8): C02F11/12
Inventor 许航丁同刚崔建峰申昆仑
Owner 江苏海壹环境科技有限公司
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