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This section provides an overview for sludge dehydrators as well as their applications and principles. Also, please take a look at the list of 18 sludge dehydrator manufacturers and their company rankings. Here are the top-ranked sludge dehydrator companies as of February, 2026: 1.Shanghai Qilee Environmental Protection Equipment Co., Ltd, 2.Wuxi Yosun Environmental Protection Equipment Co.,Ltd., 3.WEHA, LLC..
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Categories Related to Sludge Dehydrators
A sludge dehydrator is a device used to remove water from sludge. They are used in facilities that treat sewage using the activated sludge method to draw out excess sludge and maintain the proper amount of microorganisms.
There are various types and names for sludge dehydrators, including vacuum dehydrators, pressure dehydrators, screw press dehydrators, belt press dehydrators, centrifugal dehydrators, and multiple disk dehydrators.
Sludge dehydrators are mainly used for sludge treatment in wastewater facilities. In facilities that use the activated sludge method to treat sewage, excess activated sludge is called excess sludge, and if the excess sludge is not periodically removed from the facility, the number of microorganisms in the sludge will increase, creating an environment that makes it difficult for young microorganisms to be born in the tank, thereby reducing sewage treatment capacity.
The sludge dehydrator is a device used to remove the excess sludge from the facility. The excess sludge can be treated by using a pump to draw the sludge out from under the settling tank, which is called a sedimentation tank, and feed it to the sludge dehydrator.
Slaked lime and flocculants are used to alter the fine particles in the sludge and change their properties to make them easier to separate.
The following is a description of each type of dehydrator.
In the case of vacuum sludge dehydrators, the sludge is first mixed with a flocculant to make sludge filtrate. A rotating drum covered with filter cloth is dipped into the sludge filtrate and rotated at low speed by a motor.
Since the inside of the drum is under negative pressure by a vacuum pump, a suction force is generated to draw air from the outside of the drum. This suction force draws the sludge filtrate into the drum, but because the drum is covered with a filter cloth, only the water penetrates the filter cloth, and only the dewatered sludge sticks to the filter cloth. The water that penetrates the filter cloth is drained by the filtration pump, and the sludge stuck to the filter cloth is discharged as dehydrated cake.
The belt press dehydrator has a number of built-in rolls, between which two pieces of filter cloth are passed. Sludge filtrate mixed with a coagulant is placed in the filter cloth and pressed between the two filter cloths to squeeze out only the water from the filtrate, and only the dewatered sludge is discharged.
A screw press dehydrator consists of a cylindrical screw inside a tank called a screen, which is rotated at low speed by a motor. The closer the screen is to the discharge section, the narrower the screen becomes, and the pressure between the rotating screw and the screen gradually increases. The sludge filtrate is fed into the screen, and is then wound up by the screw, moving forward. The closer to the discharge section, the stronger the pressure becomes and the more water is dewatered.
Centrifugal dehydrators de-water sludge filtrate by centrifugal force. After the sludge filtrate is fed into the rotating cylinder, the cylinder is rotated at high speed, causing the sludge to accumulate on the inner wall of the cylinder. The sludge is then drained and discharged by the screw inside the rotating cylinder, which rotates at a slightly slower speed than the rotating cylinder.
The multiple disk dehydrator consists of many stainless steel or plastic disks, which are placed on top and bottom, and rotated to convey the sludge while dehydrating it. By rotating the filter, only the water is filtered through the gaps in the filter. Compared to other dewatering machines, it is less prone to clogging, are easier to clean, and do not require vacuum or pressurization equipment.
*Including some distributors, etc.
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WEHA, LLC., founded in 2010 and based in Charlotte, USA, is a manufacturer and distributor of products designed for the stone industry. The company provides an extensive and diverse range of products, including stone material handling equipment, granite and stone transport solutions, stone storage systems, slab and stone vacuum lifters, and scissor lifters. These products serve a wide array of applications within the construction, fabrication, and installation of stone materials, as well as in areas such as water filtration, dust collection, and the use of diamond tooling.
Franklin Miller Inc., established in 1918 and based in Livingston, New Jersey, is a manufacturer of solutions and systems for waste management, wastewater treatment, and industrial processing. Its product portfolio includes shredders, mills, and crushers, and it can also custom engineer systems for different processing tasks. The machines have applications in several industries, such as food processing, industrial treatment, and recycling. Its TASKMASTER TM8500 shredder has two intermeshing cutter stacks and cuts, shears, and slices in eight to twelve seconds. The company also provides a range of receiving and dispensing stations, such as septage receiving stations and bulk water fill stations.
Haibar Mechanical Engineering Co. Ltd., established in 2005 and headquartered in Shanghai, China, is an environmental protection equipment designer and manufacturer. The company specializes in providing equipment to compact recyclables and waste products, as well as providing technologies for smarter industrial waste systems. Its products include dissolved air flotation systems, sludge dewatering systems, and screening separation pretreatment units. It has completed projects such as textile, slaughterhouse, and food and beverage sewage treatment plants and provides consultation, equipment planning, and installation services.
Toro Equipment, founded in 1990, is a Spanish manufacturer of tanks and equipment for treating wastewater, urban and industrial water. The company's products find applications in water supply, water processing, water reuse, and sludge treatment, allowing both the public and private sectors to enjoy having custom water treatment solutions whle protecting the environment. The company’s products are available in more than 70 countries globally, with international sales accounting for over 80 percent of its revenue.
Estruagua, founded in 1977 and headquartered in Barcelona, Spain, is a manufacturer of wastewater treatment equipment and plants. The company's products include overflow screens, compactors, and grease, oil, and scum separator skimmers. It also provides custom construction of complete plants and has completed projects that include the delivery of eight water treatment plants in the Middle East, the installation of a hydraulic automatic screen in the wastewater treatment plant in Lleida, Spain, and the delivery of tertiary treatment Rotadiscs in North Africa.
Martin Lohse GmbH, established in 1908 and headquartered in Baden-Württemberg, Germany, is a manufacturer of steel and stainless steel products for the paper, chemical, and waste disposal industries. The company’s products include shut-off valves, regulating and reject valves, and mechanical engineering solutions. It offers valves with a service-friendly design for easy maintenance and low life cycle costs. The company's products find application in handling various materials, including pulp, granulate, and viscous media. It also provides spare parts, repairs, and test plant provision services.
Bellmer GmbH, established in 1824 and headquartered in Niefern-Öschelbronn, Germany, is a manufacturer and supplier developing paper and separation technology. The company’s portfolio includes paper and board machines, notably the TurboLine series, producing mass, fine, and specialty papers, along with packaging boards. It also offers separation technology to separate solids from liquids, catering to diverse applications such as process water, sludge, and wastewater treatment. The company further provides food processing equipment, including the WinklePress belt press for fruit juice extraction, as well as screw presses for coconut milk production.
Ranking as of February 2026
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Shanghai Qilee Environmental Protection Equipment Co., Ltd |
17.4%
|
| 2 | Wuxi Yosun Environmental Protection Equipment Co.,Ltd. |
17.4%
|
| 3 | WEHA, LLC. |
10.9%
|
| 4 | Toro Equipment |
8.7%
|
| 5 | DELUMPER Div., Franklin Miller Inc. |
8.7%
|
| 6 | BELLMER GmbH |
6.5%
|
| 7 | BLUEWIN Co., Ltd. |
6.5%
|
| 8 | Avalon Separation |
6.5%
|
| 9 | MARTIN LOHSE GmbH |
4.3%
|
| 10 | HAIBAR Mechanical Engineering Co., Ltd. |
4.3%
|
Derivation Method
The ranking is calculated based on the click share within the sludge dehydrator page as of February 2026. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
China
|
3 | 42.9% |
|
United States of America
|
1 | 14.3% |
|
Republic of Korea
|
1 | 14.3% |
|
Australia
|
1 | 14.3% |
|
India
|
1 | 14.3% |
147 products found
147 products
Amcon
680+ people viewing
Last viewed: 15 hours ago
Water treatment and sludge treatment products "Slut Dehydration Machine Valut ™ ES-051" ■ Ideal for small drainage treatment equipment. The world'...
Xebioplast Co., Ltd.
320+ people viewing
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Features ■Compact design + energy saving It is a compact unit with related equipment and a power control panel mounted on an integrated base, makin...
Kansai Sangyo Co., Ltd.
390+ people viewing
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■Summary This is a system that dries wastewater sludge from agricultural communities and industrial wastewater to reduce its volume and utilize it ...
Amcon
480+ people viewing
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Water treatment and sludge treatment products "Slut Mud dehydrator Valut ™ EC Series" ■ Surprising product recovery rate 95%or more Long -selling ...
9 models listed
Toyo Screen Industry Co., Ltd.
280+ people viewing
Last viewed: 2 hours ago
Developed as a compact dewatering device for livestock wastewater. The pollutants (SS) in the wastewater are made into flocs using a polymer floccu...
Yanagawa Engineering Co., Ltd.
440+ people viewing
Last viewed: 57 minutes ago
■Summary ・The endless filter cloth filter removes oil and water from chips and discharges them to the chip box. ・Water-insoluble (35 cst or less)...
Japan Temporary Co., Ltd.
420+ people viewing
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■Summary Sludge (sludge) immediately after generation is compressed and dehydrated on a two-layer belt conveyor to reduce its volume. The reduced v...
Amcon
410+ people viewing
Last viewed: 29 seconds ago
Water treatment and sludge treatment products "Slut Dehydrator Valut ™ FS Series" ■ Easy operation basic model with a simple structure In addition...
10 models listed
Yanagawa Engineering Co., Ltd.
290+ people viewing
Last viewed: 5 hours ago
■Space saving By using a continuous processing device, we have achieved a smaller size of the device. ■High quality drying Because it dries instan...
Amcon
440+ people viewing
Last viewed: 2 hours ago
Water treatment and sludge treatment products "Slut Dehydration Machine Valut ™ GS Series" ■ With the previous stage concentration function High -...
10 models listed
Water Cycle Engineering Co., Ltd.
410+ people viewing
Last viewed: 4 hours ago
At decontamination work sites, the amount of radiation exposure that workers are exposed to due to the highly radioactive sludge is a problem, but ...
Toyo Screen Industry Co., Ltd.
250+ people viewing
It consists of an upper roll (rubber-coated) and a lower roll made of our unique looped wedge wire in the form of a drum. Pressure is applied using...
Kikosha Co., Ltd.
340+ people viewing
Last viewed: 15 hours ago
The filter press is equipped as standard with a fully automatic filter cloth washer called ``RoFresh,'' which not only saves labor but also perform...
Amcon
430+ people viewing
Last viewed: 5 hours ago
Water treatment / sludge treatment product "Slut Dehydration Valut Duo ™ HR Series" ■ Organic, inorganic, multiple fiber sludge compatible Valuto ...
6 models listed
Amcon
290+ people viewing
Last viewed: 6 hours ago
Water treatment / sludge treatment product "Slud Mud concentration machine Valut ™ VT Series" ■ Stable sludge concentration is possible without in...
6 models listed
Yanagawa Engineering Co., Ltd.
250+ people viewing
Last viewed: 5 hours ago
■Uses high-precision, high-performance precision cylindrical filter media It has excellent filtration accuracy, separation, and dehydration capabil...
Kikosha Co., Ltd.
340+ people viewing
Last viewed: 15 hours ago
The filter press is equipped as standard with a fully automatic filter cloth washer called ``RoFresh,'' which not only saves labor but also perform...
Wintec Co., Ltd.
270+ people viewing
Last viewed: 15 hours ago
Reduces the moisture content of various sludges. Dry in low/medium temperature range and carbonize in high temperature range. ■By-products Deodori...
Amcon
400+ people viewing
Last viewed: 15 hours ago
Water treatment and sludge treatment products "Mobile dehydration car Valut ™ MV Series" ■ Multiple sludge treatment with this one unit. Correspon...
2 models listed
Wintec Co., Ltd.
350+ people viewing
Last viewed: 15 hours ago
The simple structure of the filter plate and filter cloth means that there are almost no breakdowns and maintenance and inspection are easy. ■Appl...
Wintec Co., Ltd.
340+ people viewing
Last viewed: 15 hours ago
A tilted solid-liquid separator using a wedge wire screen. It is also used in production processes for purposes such as concentration, recovery, an...
Kikosha Co., Ltd.
440+ people viewing
Last viewed: 15 hours ago
The filter press is equipped as standard with a fully automatic filter cloth washer called ``RoFresh,'' which not only saves labor but also perform...
Yanagawa Engineering Co., Ltd.
290+ people viewing
Last viewed: 8 hours ago
■Equipped with a double flocculation reaction tank as standard. It is built into the main body of the dehydrator, so it does not take up space. Add...
Wintec Co., Ltd.
410+ people viewing
Last viewed: 15 hours ago
Since it has a simple structure with only a bag filter (filtration bag), there is almost no failure and easy maintenance and inspection. This is a ...
Gordo Shoji Co., Ltd.
420+ people viewing
Last viewed: 15 hours ago
The DM series, which achieves overwhelming separation performance, achieves weight loss and volume reduction through outstanding dehydration effici...
Yanagawa Engineering Co., Ltd.
350+ people viewing
Last viewed: 15 hours ago
■Equipped with a double flocculation reaction tank as standard. It is built into the main body of the dehydrator, so it does not take up space. Add...
Yanagawa Engineering Co., Ltd.
400+ people viewing
Last viewed: 15 hours ago
■Equipped with a concentrator as standard It can also handle low concentration sludge. ■Reducing additional costs The equipment necessary for dehy...
Kikosha Co., Ltd.
420+ people viewing
Last viewed: 15 hours ago
The filter press is equipped as standard with a fully automatic filter cloth washer called ``RoFresh,'' which not only saves labor but also perform...
Gordo Shoji Co., Ltd.
370+ people viewing
Last viewed: 15 hours ago
The DM series, which achieves overwhelming separation performance, achieves weight loss and volume reduction through outstanding dehydration effici...
Wintec Co., Ltd.
400+ people viewing
Last viewed: 15 hours ago
While removing liquid with a screen, solids are moved to the discharge side using an internal low-rotation screw blade and dehydrated by applying p...
