High-Efficiency Screw Press Sludge Dewatering Machine for Petroleum and Chemical Industries
Product Overview
The Longdai screw press sludge dewatering machine is a non-clogging spiral filter press designed for high-performance sludge treatment in demanding industrial environments. By efficiently reducing sludge volume, it eliminates the need for additional sedimentation and concentration tanks, significantly cutting construction and operational costs for wastewater treatment plants. Equipped with a unique self-cleaning mechanism using screws and moving rings, and fully automated PLC control, this machine offers a modern, reliable alternative to conventional dewatering equipment such as belt filter presses and chamber filter presses. Its low rotational speed ensures minimal power and water consumption, outperforming centrifuges in efficiency and establishing it as a leading solution in sludge dewatering technology.
Working Principle
Flocculated sludge enters the filtration zone from the mixing tank and is conveyed toward the discharge end by the rotating screw. As the pitch between the screw flights gradually decreases, mechanical pressure on the sludge increases, effectively squeezing out moisture. The released water escapes through gaps between the moving and fixed rings, while the continuous movement of the rings prevents clogging by self-cleaning the filter gaps, ensuring uninterrupted operation.
Applications
This dewatering screw press is suitable for a wide range of applications, including:
Municipal wastewater treatment plants
Industrial effluent treatment systems within petroleum, chemical, fiber, papermaking, pharmaceutical, and leather industries
Agricultural and organic waste treatment such as dairy manure, palm oil sludge, and septic tank sludge
Practical operations demonstrate that this system delivers significant economic and environmental benefits.
Key Advantages
Closed Design: Minimizes odor and noise emissions; reduces wash water consumption to 1/8 of that required by belt presses
Energy Efficiency: Very low power consumption—only 1/20 of that of centrifugal dewaterers
High Solids Capture: Produces cake with high solid content, reducing disposal costs
Minimal Operator Intervention: Automated operation lowers labor requirements
Ease of Operation and Maintenance: User-friendly design simplifies daily handling and upkeep
Full Automation: Supports automatic start-up, operation, and shutdown
Touch Screen Interface: Optional intuitive control for enhanced usability
Monitoring System: Integrated sensors for sludge flow and cake consistency monitoring
Versatile Configuration: Customizable options available for specific applications including dairy, palm oil, and other industrial sectors
Parameters
| Specification and dimension Model | DL-101 | DL-102 | DL-201 | DL-202 | DL-301 | DL-302 | DL-303 | |
|
Handling capacity (m3／h) |
Ind concentration S．S．0.2～0.5％) |
0.6~1.5 | 1.2~3.0 | 1.8~4.5 | 3.6~9.0 | 6.0~15 | 12~30 | 18~45 |
|
Ind concentration (S．S．0.5～2.0％) |
0.25~0.6 | 0.5~1.2 | 0.75~1.8 | 1.5~3.6 | 2.5~6.0 | 5.0~12 | 7.5~18 | |
|
Ind concentration (S．S．2.0～5.0％) |
0.1~0.25 | 0.2~0.5 | 0.3~0.75 | 0.6~1.5 | 1.0~2.5 | 2.0~5.0 | 3.0~7.5 | |
|
Exdry amount (kg／h) |
Ind concentration (S．S．0.2～0.5％) |
0~3.0 | 2.4~6.0 | 3.6~9.0 | 7.2~18 | 12~30 | 24~60 | 36~90 |
|
Ind concentration (S．S．0.5～2.0％) |
0~5.0 | 5.0~10 | 9.0~15 | 18~30 | 30~50 | 50~100 | 90~150 | |
|
Ind concentration (S．S．2.0～5.0％) |
0~5.0 | 5.0~10 | 9.0~15 | 18~30 | 30~50 | 50~100 | 90~150 | |
| Water content of mud cake (％) | 75~85 | 75~85 | 75~85 | 75~85 | 75~85 | 75~85 | 75~85 | |
| Spirical Didiameter (mm)x Quantity (root) | 100x1 | 100x2 | 200x1 | 200x2 | 300x1 | 300x2 | 300x3 | |
| Power (KW) | 0.2 | 0.3 | 0.6 | 0.8 | 0.8 | 1.2 | 1.95 | |
|
contour size of the unit(s) (ww) |
L | 1816 | 1816 | 2500 | 2500 | 3255 | 3455 | 3605 |
| W | 756 | 910 | 850 | 935 | 985 | 1295 | 1690 | |
| H | 1040 | 1040 | 1270 | 1270 | 1600 | 1600 | 1600 | |
| Reference Weight(kg) | 190 | 275 | 360 | 470 | 820 | 1350 | 1820 | |
Real picture
Company Profile
Jiangsu Longdai Environmental Technology Co., Ltd. is an environmental protection equipment manufacturer with 11 years of experience. It has provided a large number of sophisticated environmental protection equipment at home and abroad, established three branches in China, and cooperated with many universities to build Longdai R&D center. There are 4 middle doctors, 10 masters, and 25 senior engineers.
