The ELODE system utilizes a dewatering process that combines electro-osmosis, electro-permeation, and electrophoresis to effectively dry sludge, which is challenging to dewater through physical methods alone.
Electro-osmosis leverages an electric field to move moisture in the direction of the electric field. Through this process, bound water, free water, and cellular water within the sludge are pushed out, reducing the moisture content from 80% to 60%.
During this process, various forms of water within the sludge are separated and evaporated by electrical energy, achieving a significant reduction in moisture content within 1 minute and 30 seconds.
60%DS guarantee Electro Osmosis Dehydrator main drum
60%DS guarantee Electro Osmosis Dehydrator main drum
60%DS guarantee Electro Osmosis Dehydrator main drum
60%
Reducing the moisture content from
โ90%โ
Sludge Drying
02
NVD Natural Ventilation Drying Principle
The NVD cannot operate independently. it must be applied following the ELODE stage.
The dewatered sludge cake from the ELODE stage continues to evaporate moisture naturally, reaching temperatures of approximately 40โ to 80โ, depending on its organic content and conductivity.
This sludge cake, with its unique flat type and disrupted cell structure, forms numerous air gaps.
The NVD directly receives this cake and gently passes external air through a specially designed orifice line, allowing natural ventilation to remove moisture without producing flying dust, resulting in a high-calorific value cake.
Through this NVD process, the sludge’s moisture content is reduced to as low as 10%, minimizing energy consumption through natural drying.
The NVD is an advanced drying system designed to retain the internal heat of organic sludge while continuously expelling moisture through air gaps, making it highly effective at removing moisture.
03
Glue Zone Treatment
The most challenging part of sludge treatment is reducing the moisture content from 80% to 60%, known as the Glue Zone. In this phase, the sludge becomes sticky and is challenging to process using conventional dewatering methods.
The ELODE system is specifically designed to efficiently pass through the Glue Zone, utilizing electro-osmosis and electrophoresis to rapidly dewater sludge to below 60% moisture content.
Integration of Electro-Osmosis, Electro Permeation, and Electrophoresis Technologies
The ELODE system combines three advanced technologies: electro-osmosis (water movement under electric field), electro-permeation (particle separation under electric field), and electrophoresis (particle migration under electric field).
Electro-osmosis technology quickly removes moisture within the sludge, electro-permeation facilitates water movement between particles, and electrophoresis accelerates water expulsion through positive (+) and negative (-) electrodes.
This integrated technology enables effective dewatering with very low power consumption, significantly improving energy efficiency.
Close-up view of the dewatering process, showing machinery in operation, reducing moisture content in sludge
02
3-Phase Wave-Controlled High-Frequency DC Power Supply
The ELODE system adopts a technology that converts traditional AC power into 3-phase high-frequency DC through phase control. This allows for rapid electron movement within the sludge, enabling moisture separation with low energy input.
AC power alone cannot maintain stable current and voltage due to the constant change in speed, so it is converted to 3-phase phase-controlled DC.
3-phase high-frequency DC efficiently moves and expels moisture within cell membranes, which are typically difficult to dehydrate, minimizing energy consumption while maintaining high efficiency.
Specifically, when positive and negative charges are applied to the numerous electrons within the sludge, the separation of water from solids occurs. Following this separation, the electric field penetrates the bound and capillary water in the cell membranes, destroying the membranes and dewatering free water within 1 minute and 30 seconds – an innovative and efficient technology.
While the system is powered by electricity, the principle of operation is electron movement.
03
Automated Sludge Distribution System (SFD) and Optimized Sludge Feeding System
The ELODE system is equipped with an Automated Sludge Distribution (SFD) that optimizes the thickness, width, and belt speed of the sludge, adjusting automatically to the sludge’s condition.
This allows the system to achieve the most efficient electro-osmosis and electro-permeation based on sludge characteristics, enhancing dewatering rates and ensuring uniform treatment results.
04
Coulomb Heating Method
During electro-permeation and electrophoresis, rapid exchange between positive (+) and negative (-) electrons generates heat naturally, referred to as the Coulomb Heating effect.
Due to Coulomb Heating, the discharged cake from the ELODE process naturally heats up to 40โ to 80โ, depending on its organic content and conductivity.
This self-heating effect contributes to evaporating internal moisture without additional heat input, further enhancing the drying efficiency.
05
Low Energy Consumption Assurance
The ELODE+NVD system is designed to evaporate 1 liter of water with only 0.25-0.35 kWh of power consumption, making it highly energy-efficient.
This system significantly reduces energy consumption and CO2 emissions compared to traditional thermal drying methods, providing an eco-friendly solution.
We hope this summary will help you understand the principles and technical characteristics of the equipment. If you need further explanation, please feel free to contact me!
