Multi Disc Screw Press

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The screw stacker is another name for the multi-disc screw press. A new kind of sludge dewatering machine, it achieves sludge extrusion and dehydration by the strong extrusion force produced by the variation in screw diameter and pitch, as well as the minute space between the moving ring and the fixed ring. Equipment for solid-liquid separation.

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BIOETP

Jiangsu, China

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Working principle of Multi Disc Screw Press:

The screw shaft travels through a filtering mechanism that is constructed by stacking a fixed ring and a moving ring in the stacked screw dehydrator. The concentration area is in the front, while the dehydration section is at the back. From the thickening section to the dehydrating part, the filter gap that formed between the fixed ring and the moving ring and the pitch of the screw shaft steadily shrank. The swimming ring is continuously driven by the rotation of the screw shaft, which also cleans the filter joints to prevent clogging as the sludge is pushed from the thickening to the dehydrating portion.

Different processing capacity can be modified based on needs thanks to modular design:
The capacity of the QY-SPD series screw press sludge dewatering machine can be readily enlarged through parallel operation system due to its modular design and compact structure to satisfy the treatment of diverse sludges with variable capacities. The treatment capacity ranges from 1.5 m3/h to 180 m3/h for sludge concentrations of 0.2% and from 0.3 m3/h to 28 m3/h for concentrations of 2%.

Application of Multi Disc Screw Press:
employed extensively in the dehydration of sludge and solid-liquid separation of municipal and industrial wastewater in the petroleum, food and beverage, animal husbandry, feed, pharmaceutical, chemical, machinery manufacture, metal processing, printing and dyeing, papermaking, and paint sectors.

Benefits of Multi Disc Screw Press

Small footprint, cheap investment costs, and dramatically improved treatment results:

The multi disc screw press can directly treat the sludge in the aeration tank and the secondary sedimentation tank without the need to set up a sludge thickening tank and a sludge storage tank due to its small footprint, which can reduce the civil construction investment of the dehydration machine room. Cost, avoiding the issue of phosphorus release in the conventional sludge thickening tank, and enhancing the dephosphorization process of the sewage treatment system are all advantages.

Fully automatic, unsupervised, straightforward, and user-friendly:

The multi disc screw press's operation is straightforward and secure because it lacks filter cloths, filter holes, and other easily clogged parts. The program can be configured to achieve fully automatic, unattended operation in accordance with the operational time period specified by the customer and in conjunction with the automatic control system.

Guaranteed after-sale service: Our team of knowledgeable engineers will assist you with installation, operation, and maintenance training.

FEATURES

INDIVIDUAL PRE-CONCENTRATION DEVICE

Sludge with low concentrations can be handled more effectively by the designed rotary disc pre-thickening device.
Improve the drawbacks of the current gravity thickening, achieve high-efficiency concentration of low-concentration sludge, integrate flocculation and concentration, lower the pressure of subsequent dehydration. Combined with the adjustment of the telescopic valve, the concentration of the incoming sludge can be adjusted to an optimal state for dehydration, suitable for sludge dehydration treatment with a concentration of 2000mg/L–50000mg/L.

HIGH-EFFICIENCY DOUBLE-LOOP CONCEPT

The filter screen, filter cloth, etc. are replaced with the movable and fixed ring, which is self-cleaning, non-clogging, and simpler to manage oily sludge.
The movable plate of the multi-disc screw press is continuously moved relative to the fixed plate while the screw shaft rotates, realizing a continuous self-cleaning operation and avoiding the typical clogging issue of conventional dehydrators. As a result, it is straightforward to separate and does not block, and it has a high ability to resist oily dirt. Additionally, high-pressure washing is clean and environmentally friendly, requires no additional water, has no odor, and produces no secondary pollutants.
Low speed, minimal noise, and minimal energy use
Energy conservation, emission reduction, and noise reduction
Without the need for a huge BODy like a drum and with a modest running speed of approximately 2-4 rotations per minute, the multi-disc screw press dehydrates using volumetric internal pressure while producing little noise. The belt machine uses 1 watts of energy on average. Its unit power consumption is only 0.01-0.1kwh/kg-DS, which can lower the cost of operating the sewage treatment system. /8, 1/20 of the centrifuge.