Benenv details stainless-steel multi-disk screw press line for continuous sludge dewatering

JIANGSU BENENV ENVIRONMENTAL TECHNOLOGIES CO., LTD has published engineering and certification details for its MDS series of multi-disk screw press sludge dewatering machines, which target 24/7 continuous operation across municipal, industrial and agricultural wastewater uses. The release highlights stainless-steel construction, a wide model range, and CE and ISO 9001 documentation as demand for lower-energy sludge dewatering systems grows.

Why it matters: - The MDS line is aimed at plants that need continuous sludge dewatering with lower energy use, less manual oversight and simpler maintenance. - Buyers comparing dewatering equipment are increasingly looking at screw press systems as an alternative to centrifuges because of lower power demand and steady operation. - The published model data gives engineers a single reference set for matching throughput, dry-solids output, wash-water use and motor size to a specific site.

What happened: - JIANGSU BENENV ENVIRONMENTAL TECHNOLOGIES CO., LTD published details on its MDS series of multi-disk screw press sludge dewatering machines from Yixing, Jiangsu, China. - The company says the line is built for factory-oriented automation and 24/7 unattended operation. - The MDS range runs from the compact MDS101 to the high-throughput MDS404. - Benenv also posted product, compliance and company information at company documentation.

The details: - The MDS architecture uses a cylindrical dewatering zone made of fixed and moving rings, with a rotating screw moving sludge through the chamber. - As the screw advances, chamber volume shrinks, pressure rises and water exits through gaps between the rings. - The design relies on slow mechanical compression rather than high-speed centrifugation. - Documented operating benefits include stable continuous performance, low energy consumption, low noise and vibration, simple maintenance and a self-cleaning mechanism. - Benenv specifies SS304 or SS316L stainless steel for the MDS series. - The stainless-steel construction and absence of filter cloth reduce reliance on common wear parts seen in belt-filter systems. - The operating mode is fully automatic continuous operation, and the process train typically includes a sludge feed pump, polymer dosing system, PLC control panel and cake conveying system. - The company lists 16 MDS configurations, with published flow capacity from 0.12 to 200 m³/h and dry-solids capacity from 3 to 680 kg/h. - Motor power in the catalog ranges from 0.2 kW to 8.2 kW. - Published model data also includes machine weight and wash-water demand for each unit. - Benenv says the MDS101 can handle 0.12–1.5 m³/h and 3–6 kg/h of dry solids at 0.2 kW, while the MDS404 reaches 13.6–200 m³/h and 400–680 kg/h at 8.2 kW. - Other listed models include the MDS201 at 12–20 kg/h DS, the MDS353 at 180–360 kg/h DS and the MDS354 at 240–480 kg/h DS. - The company positions the series for municipal, industrial, food-processing, pharmaceutical and agricultural wastewater applications. - Benenv reports more than 4,500 project references in more than 60 countries. - In Oman, an MDS202 unit was used for industrial sludge dewatering at a major shipyard and was reported in stable operation after one year. - In Indonesia, MDS403 units were used for palm oil mill sludge dewatering, with references reporting stable operation after three years and two years. - In Portugal, an MDS303 unit was installed at a meat processing plant to reduce DAF sludge volume and was reported in stable operation after two years. - In the United States, three MDS353 units were supplied for DAF sludge dewatering and volume reduction at a farm-based municipal-type treatment site.

Between the lines: - The release is trying to frame the MDS series as a specification-ready product line rather than a single machine. - The breadth of model sizes, power ratings and dry-solids ranges suggests Benenv is targeting both smaller distributed sites and larger municipal plants. - Material choice matters because sludge can carry abrasive particles, chlorides and low-pH compounds that drive corrosion and wear. - The CE and ISO 9001 paperwork reduces friction for procurement teams that need documentation during tender review. - Benenv is positioning the MDS line against established separation brands by emphasizing continuous screw-press operation, lower power use and a broad catalog. - The company says its operating model combines Japanese technology, Chinese manufacturing and global sales. - Benenv reports a manufacturing base of about 20,000 m², nearly 200 staff, about 500 units of annual output and a 50-engineer team. - The company says approximately 70% of output is exported.

What's next: - Engineering contractors and plant operators will likely compare MDS models against sludge type, required dry-solids throughput, wash-water availability and automation needs. - Procurement teams evaluating new dewatering systems will continue to weigh screw-press units against centrifuge-based systems on energy use and operating simplicity. - Future buying decisions will likely hinge on whether the selected MDS model matches site-specific sludge chemistry and capacity demand.

The bottom line: - Benenv is using the MDS series to stake out a standardized, stainless-steel, continuous dewatering platform with enough published performance data to support early-stage equipment selection.