Sludge Dewatering Machine

In the process of wastewater treatment, water-content sludge of different nature is generated. The main purpose of sludge dewatering equipment is to reduce the water content of sludge and reduce the volume of sludge, thus facilitating the subsequent treatment or disposal of sludge. Its compact structure and low energy consumption are increasingly accepted by wastewater treatment contractors. Choosing a better quality and reasonably priced sludge dewatering machine will bring the user a good profit.

In the wastewater treatment industry, the commonly used dewatering equipment can generally be divided into filter presses, decanter centrifuges and screw presses. The operation of filter presses is more demanding, and a large amount of water is required to flush the filter cloth, but the discharged mud cake is relatively dry. When the labor cost is high, the site is limited, and the solid content of the material is high, a dewatering decanter centrifuge can be used as the ideal equipment. Screw press sludge dewatering machine, also known as multi-disc dewatering machine, has the advantages of energy saving, stability and high degree of automation. It is widely used in municipal wastewater treatment projects and water treatment systems in the food, petroleum, pharmaceutical, chemical, paper, leather and other industries.

Sludge dewatering is the process of separating solid and liquid sludge components to minimize sludge disposal. Often polymer flocculants are also added prior to sludge dewatering (using powder dosing system) to help the solid-liquid separation process.

Instead of treating sludge or liquids, the sludge dewatering facility will separate liquid and solid components, making it easier and cost effective to treat the different treatment stages. After final sludge dewatering, the liquid is treated in ETP/STP and the solid sludge is disposed of.

The main purpose of sludge dehydrators is to minimize treatment and disposal. Sludge dehydrators are the most cost-effective method of dehydration and therefore help to maintain the company’s environmental objectives.

KUOSI is a manufacturer and supplier of sludge dewatering equipment and systems. Mainly offering filter presses and screw press machines, contact us to select or customize the most suitable sludge dewatering machine for your application.



A sludge treatment process in which the fluid form of primary, concentrated or digested sludge is dehydrated and converted into semi-solid or solid mud blocks. After dewatering, the moisture content of the sludge can be reduced to 55 to 80 percent, depending on the nature of the sludge and sediment and the efficiency of the dewatering equipment. The further dewatering of sludge is called sludge desiccation, and the moisture content of desiccation sludge is less than 10 percent. Dehydration methods, mainly natural drying method, mechanical dehydration method and granulation method. Natural drying and mechanical dewatering are suitable for sewage sludge. The granulation method is suitable for sludge with coagulation and sedimentation.

After the sludge is fed into the drum by the hollow shaft, it is immediately thrown into the drum cavity under the action of centrifugal force generated by high-speed rotation. Because the density of sludge particles is larger, the centrifugal force is also large, so it is thrown on the inner wall of the drum, forming a solid ring layer; Because the density of water is small, the centrifugal force is small, so it can only form the liquid ring layer inside the solid ring layer. The sludge of solid ring layer is slowly promoted by the screw conveyor, which is transported to the cone end of the drum, and discharged continuously through the outlet around the drum. Liquid ring layer of liquid by Yan kou continuous “overflow” discharged to the drum, the formation of separation liquid, and then together, by gravity discharge dehydrator.

Dehydrator generally refers to centrifugal dehydrator used in coal mine in the field. Vibration centrifugal dehydrator and scraper unloading centrifugal dehydrator are two kinds of centrifugal dehydrator commonly used in coal mine.

In the design of coal preparation plant, the use of mine centrifuge can realize the automation of feeding and discharging, which is beneficial to realize the automatic control of the whole coal preparation plant. Vibrating discharge centrifugal dehydrator and scraper discharge centrifugal dehydrator are two common centrifugal equipment in mine centrifuge. The purpose of their work is to use the water from the coal surface by centrifugal force from the coal surface, and then use different methods to dehydrate the material into the discharge port. An important component in a centrifuge is the sieve blue. Machines with large diameter sieve baskets are often used in order to handle more material. The loss in filtrate is greatly influenced by the size of sieve seam.

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