Sewage sludge dewatering device based on cooperation of oxidization, electroosmosis and mechanical filter pressing

Abstract

The invention discloses a sewage sludge dewatering device based on cooperation of oxidization, electroosmosis and mechanical filter pressing. The sewage sludge dewatering device comprises a spiral filter pressing device, an oxidation cylinder and an electroosmosis extrusion dewatering device, wherein a sewage sludge inlet is formed in the front end of the spiral filter pressing device; the rear end of the spiral filter pressing device is connected with the oxidation cylinder; the oxidation cylinder is communicated with the electroosmosis extrusion dewatering device; the electroosmosis extrusion dewatering device comprises an electroosmosis extrusion container, an anode plate, a cathode plate and a hydraulic system; the anode plate and the cathode plate are arranged in the electroosmosis extrusion container; after electroosmosis dewatering is completed by the electroosmosis extrusion dewatering device, the sludge water content of the anode plate is low, electroosmosis dewatering can be stopped, and pressure between the anode plate and the cathode plate is enlarged, so that ultrahigh pressure filter pressing dewatering is realized; the hydraulic system is connected with the anode plate, and the hydraulic system comprises a hydraulic oil cylinder and a high-low pressure regulating device. According to the sewage sludge dewatering device disclosed by the invention, high-water content sludge can be directly treated, and the dewatering energy consumption and the sludge water content are reduced through a multi-cooperation dewatering mode.

Description

technical field [0001] The invention relates to the field of sewage sludge treatment, in particular to a sewage sludge dewatering device based on oxidation, electroosmosis and mechanical pressure filtration. 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 fre...

AI Technical Summary

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 content and uneven water content, etc., propose a sewage sludge dewatering device based on oxidation, electroosmosis and mechanical pressure filtration, which can directly treat sludge with high water content, low energy consumption, and low water content after dehydration

Images