Oxidization, electric osmosis and mechanical filter pressing based sewage sludge co-dehydration device

Abstract

The invention discloses an oxidization, electric osmosis and mechanical filter pressing based sewage sludge co-dehydration device, comprising a spiral filter pressing device, an oxidizing barrel body and an electric osmosis squeezing dehydration device, wherein a sewage sludge inlet is arranged at the front end of the spiral filter pressing device, the rear end of the spiral filter pressing device is connected with the oxidizing barrel body, the oxidizing barrel body is communicated with the electric osmosis squeezing dehydration device, sewage sludge enters the front end of the spiral filter pressing device from the sewage sludge inlet of the spiral filter pressing device, gravity dehydration is realized under the influence of gravity of the sewage sludge, water is removed continuously as the sewage sludge moves forward, the sewage sludge is discharged out of the spiral filter pressing device and enters the oxidizing barrel body, ozone is replenished into the oxidizing barrel body so that the sewage sludge is mixed and reacted with the ozone, the sewage sludge is discharged out of the oxidization barrel body and enters the electric osmosis squeezing dehydration device for an electric osmosis dehydration. According to the oxidization, electric osmosis and mechanical filter pressing based sewage sludge co-dehydration device, sludge of high water content can be treated directly, energy consumption for the dehydration is reduced greatly as a co-dehydration based on several means is employed, and the sludge treated according to the invention has low water content.

Description

technical field [0001] The invention relates to the field of sewage sludge treatment, in particular to a sewage sludge oxidation electroosmosis mechanical pressure filter cooperative dehydration device. Background technique [0002] The high water content of sludge is the bottleneck restricting the treatment and disposal of sludge. The sludge with high water content is not only bulky, but also contains a large amount of organic matter, heavy metals and harmful microorganisms, which are easily corrupted or released into the environment, causing secondary pollution. It will have adverse effects on the subsequent landfill, incineration and resource utilization of sludge. Therefore, sludge dehydration reduction is the primary purpose of sludge treatment, and reduction is the basis for realizing other "three modernizations" of sludge. The drier the sludge, the more beneficial the subsequent treatment and disposal. [0003] There are four forms of water in sludge, namely free wat...

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Problems solved by technology

[0010] In view of this, the present invention aims at the rapid drying of the anode layer sludge in the electroosmotic process of the above-mentioned prior art, the rapid increase of the resistance, and the rapid decrease of the current. High water conte

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