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Sludge ozonization dehydration treatment method and device

A treatment method and technology of treatment device, which are applied in dewatering/drying/concentrating sludge treatment, oxidation treatment of sludge, etc., can solve the problems of unstable dewatering effect of filter press, inability to obtain dewatering effect, and easy failure, and achieve saving The effect of chemical stirring device, saving equipment investment and reducing processing load

Inactive Publication Date: 2014-06-04
HANGZHOU QINGSE ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method directly sends the sludge with a moisture content of 99% to the chamber diaphragm filter press without any pre-dehydration, and the dehydration capacity is large, so that the filter press maintains a huge workload, and the filter press works under a long-term heavy load. , easy to break down, and also make the dehydration effect of the filter press unstable
In addition, this method can only basically meet the above-mentioned national standards, and cannot obtain a better dehydration effect

Method used

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  • Sludge ozonization dehydration treatment method and device
  • Sludge ozonization dehydration treatment method and device
  • Sludge ozonization dehydration treatment method and device

Examples

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Embodiment 1

[0035] A sludge ozonation dehydration treatment method, comprising the following steps in sequence:

[0036] A. The raw sludge with a water content of 99% is pumped into the sludge ozonation reaction tank, and the raw sludge flows through a tortuous channel in the sludge ozonation reaction tank, where it is fully contacted with ozone for ozonation, The interstitial water and cell water in the original sludge are released, and the ozone intake concentration and intake flow rate are as shown in Table 1;

[0037] B. Mechanically thicken the sludge after ozonation;

[0038] C. Pump the mechanically concentrated sludge to the chamber diaphragm filter press, and add polymer flocculant at the outlet of the pump. The polymer flocculant is mixed evenly with the sludge by means of the rapid rotation of the sludge pump. , so that the sludge is adsorbed and aggregated, and then coagulated and precipitated;

[0039] D. The sludge after flocculation is pumped into the compartment memb...

Embodiment 2

[0048] A sludge ozonation dehydration treatment method, comprising the following steps in sequence:

[0049] A. The raw sludge with a water content of 99% is pumped into the sludge ozonation reaction tank, where it is stirred and fully contacted with ozone for ozonation, so that the interstitial water and cell water in the raw sludge Released, the ozone intake concentration and intake flow are shown in Table 2;

[0050] B. Mechanically thicken the sludge after ozonation;

[0051] C. Pump the mechanically concentrated sludge to the chamber diaphragm filter press, and add polymer flocculant at the outlet of the pump. The polymer flocculant is mixed evenly with the sludge by means of the rapid rotation of the sludge pump. , so that the sludge is adsorbed and aggregated, and then coagulated and precipitated;

[0052] D. The sludge after flocculation is pumped into the compartment membrane filter press for pressure filtration;

[0053] E. After pressing the filter, the gas ...

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Abstract

The invention relates to a sludge ozonization dehydration treatment method and a sludge ozonization dehydration treatment device. The method comprises the following steps in sequence: A, pumping original sludge into a sludge ozonization reaction device for ozonization so as to release interstitial water and cell water in the original sludge; B, mechanically concentrating; C, pumping the sludge into a box-type diaphragm filter press, and adding a macromolecule flocculant at an outlet of a pump; and D, filter-pressing; E, blowing the residual sludge in a sludge feeding tube towards the sludge feeding direction, and subsequently discharging the sludge. The device comprises an original sludge conveying pump, a sludge ozonization reaction device, an after-ozonization sludge conveying pump, a mechanical concentration device, an after-mechanical concentration sludge conveying pump and the box-type diaphragm filter press which are connected in sequence through pipelines, wherein an air conveying pipeline is arranged at the tail end of the sludge feeding tube of the box-type diaphragm filter press. By adopting the method and the device, the moisture content of the sludge is stably reduced to be less than 50%, the treatment burden of the box-type diaphragm filter press is alleviated, the working efficiency is remarkably improved, and the purposes of lightening, harmlessness and resourceful treatment on the sludge are ultimately achieved.

Description

technical field [0001] The invention relates to a sludge ozonation dehydration treatment method and device. Background technique [0002] The national standard "Sludge Disposal of Municipal Sewage Treatment Plants for Mixed Landfill Mud" (GB / T 23485-2009) stipulates that when sludge and domestic waste are mixed for landfill, the moisture content of the sludge should be less than 60%. In the existing sludge dewatering process, it is a better way to filter and dewater the sludge with a water content of 99% directly from the sewage treatment plant using a chamber diaphragm filter press, which can basically meet the requirements of the above standards. However, this method directly sends the sludge with a moisture content of 99% to the chamber diaphragm filter press without any pre-dehydration, and the dehydration capacity is large, so that the filter press maintains a huge workload, and the filter press works under a long-term heavy load. , is prone to failure, and also makes ...

Claims

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Application Information

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IPC IPC(8): C02F11/06C02F11/14
Inventor 陈文虎曹焕亚李晓寒
Owner HANGZHOU QINGSE ENVIRONMENTAL PROTECTION TECH
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