Wastewater sludge electroosmotic dehydration-ECOPOLYMER

Wastewater sludge electroosmotic dehydration

ELODE^®- is the first industrial electroosmotic dehydrator in the world, which is able to accomplish deep dehydration of practically all types of wastewater sludge and liquid wastes such as:

Municipal wastewater sludge

Industrial wastewater sludge

PPI wastewater sludge

Agricultural wastewater sludge

Foodstuff and beverage industry wastewater sludge etc.

Electroosmotic dehydration methods:

Combined electrophoresis and electroosmotic action;
Initial sludge passes between the drum (anode) and the track chain (cathode)
Pressure is supplied between two electrodes; sludge particles (-) are directed to anode and water (+) – to cathode.

The main stages of ELODE^® process:

1. Initial electroosmosis, electrophoresis

Upon the electric potential drop sludge solid phase particles (-) press themselves to anode (+).

2. Intermediate electroosmosis

Dehydration due to water (-) motion to cathode (+);
Interelectrode sludge thickness layer decrease, electric resistance decrease.

3. Final electroosmosis

Capillary pressure;
Local heating;
Adsorbed water flow is directed to cathode (-) through sludge layer pores;
Cellular membrane destruction;
Due to cellular membrane destruction adsorbed water is released;

Equipment operation description

The main ELODE^® structural elements are the drum (anode) and the track chain (cathode), between which preliminarily dehydrated sludge is settled along the ringed filter cloth.

Initial sludge is spread along the mesh and enters the interelectrodes space. 50-90 V direct voltage from the rectifier, located in a control cabinet is supplied to the electrodes. Voltage and current are adjustable, which allows matching of the most favorable sludge treatment mode.

Afterdehydrated sludge is scraped from the mesh and directed to the transporter.

Afterdehydrated sludge transportation is followed by mesh washing; water is supplied through self-cleaning nozzles by high-pressure pump. Within clogging each separate nozzle becomes automatically opened, releases all the obstructions and returns to operating position.

The electroosmotic dehydration process is uninterrupted. It is controlled by the control cabinet, which includes rectifier, control, signaling and display elements.

Sludge heating up to 60 - 65 С is occurred in the interelectrodes space. Sludge thermal treatment time period is sufficient for its disinfection. Discharged filtrated is collected into the pan and released from the device. Fumes are discharged from the device through the air-intake hood and directed for treatment.

Mechanical dehydration	ELODE^®
75-80% moisture	45-60% moisture
2-3 times sludge volume decrease

2-3 times sludge weight decrease

Municipal enterprises