Introduction
The multi-disk screw press developed by benenv follows the dewatering principles of force-water current, thin-layer dewatering, moderate pressure and extension of the sludge dewatering path. It is able to treat low concentration sludge and oily sludge effectively, with low energy consumption and easy operation. This multi-plate screw press realizes an energy-efficiently sludge dewatering.
Functional principle
Layers of spacers, fixed and moving rings construct the dewatering cylinder. Moving rings, which are slightly smaller than the outer diameter of the screw and slightly narrower than the spacers, are located between the fixed rings. Edge of the screw pushes these moving rings in continuous circular motion.
The moving rings continuously clean sludge out of the gaps, prevents clogging and reduces the use of rinsing water.
Advantages
Thickening and dewatering all in one filter drum
Applicable to sludge in various kinds of applications
Wide range of line-up/Small footprint
Easy operation/Easy maintenance
Environment friendly (power saving/low noise/water saving design
Warranty and reliable after-sales service
Applications
Municipal water and wastewater treatment plants
Agricultural/fishery community wastewater treatment plants
Industrial waste treatment plants
Food/beverage production plants
Dairy farming/meat processing plants
Chemicals manufacturing plants
Machinery manufacturing/metal processing plants
Laundry wastewater
Other (paper manufacturing, building material manufacturing, oilfield associated water accompanied with crude oil mining, etc. )
Case study
Qujing City, Yunan Province, Sludge Treatment Plant
Problem
In the wastewater treatment plant of a town in Qujing, the long-used belt press was in a time to be overhauled. The person in charge had racked his brain over the problem of huge cost required to overhaul this equipment at regular intervals. He had been seeking a solution to this problem.
In addition, he had to cope with another knotty problem that a planned new construction of sludge treatment plant cost had to be lowered as possible. Furthermore, there had been multiple problems in this town in connection with sludge treatment including odor problem generated from the Sludge Thickening Storage Tank, the employment cost of resident staff to manage the existing dewatering equipment.
Benenv's offer for a solution
The encounter with Multi-Disk Screw Press resolved all these problems in this town. The person in charge started with setting up Multi-Disk Screw Press at a cost of overhauling the existing belt press, which allowed him to avoid the burden of regular huge overhaul cost. As concerns odor problem, one of the features of Multi-Disk Screw Press (direct dewatering system from OD tank) substantially-improved the odor. Multi-Disk Screw Press also allowed him to reduce resident staff to manage the equipment and the employment cost.
The introduction of Multi-Disk Screw Press was included in a new construction of sludge treatment plant in the basic design phase. With this introduction, there were no need of Sludge Thickening Tank and Sludge Storage Tank, which resulted in about 20 million yen reduction of construction cost.
Models reference pls see the following form.
| Model |
Dried sludge
Standard capacity
(kg/h) |
Sludge treatment capacity (m 3 /h) |
|
|
Low
concentration |
High
Concentration |
2000mg/L |
5000mg/L |
10000mh/L |
20000mg/L |
25000mg/L |
50000mg/L |
| MDS101 |
~3 |
~5 |
~1.5 |
~0.6 |
~0.5 |
~0.25 |
~0.2 |
~0.1 |
| MDS131 |
~6 |
~10 |
~3 |
~1.2 |
~1 |
~0.5 |
~0.4 |
~0.2 |
| MDS132 |
~12 |
~20 |
~6 |
~2.4 |
~2 |
~1 |
~0.8 |
~0.4 |
| MDS202 |
~18 |
~30 |
~9 |
~3.6 |
~3 |
~1.5 |
~1.2 |
~0.6 |
| MDS311 |
~30 |
~50 |
~15 |
~6 |
~5 |
~2.5 |
~2 |
~1 |
| MDS312 |
~60 |
~100 |
~30 |
~12 |
~10 |
~5 |
~4 |
~2 |
| MDS313 |
~90 |
~150 |
~45 |
~18 |
~16 |
~7.5 |
~6 |
~3 |
| MDS412 |
~120 |
~200 |
~60 |
~24 |
~20 |
~10 |
~8 |
~4 |
| MDS413 |
~180 |
~300 |
~90 |
~36 |
~30 |
~15 |
~12 |
~6 |
Audited Supplier 
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