The stacked screw type multi-disk screw press sludge dewatering machine is a water treatment system widely used in municipal sewage treatment engineering and industrial industries such as petrochemical, light industry, chemical fiber, papermaking, pharmaceutical, leather, etc. The actual operation has proven that the spiral sludge dewatering can create considerable economic and social benefits for customers.
Working Principles
The main body of the screw type sludge dewatering machine is a filtering device formed by a fixed ring and a movable ring which are overlapped with each other, and the spiral shaft penetrates through them.
The front section is the concentration section, and the rear section is the dehydration section. The filter gap formed between the fixed ring and the movable ring and the pitch of the screw shaft gradually decrease from the concentration part to the dehydration part. The rotation of the screw shaft drives the sludge to be transported from the thickening section to the dewatering section, and at the same time, it also continuously drives the traveling ring to clean the filter joint to prevent clogging.
Advantage
1、Configurating exclusive spiral plate for pre-concentration and better for treating low concentration sludge（Sludge Concentration 2000mg/L-50000mh/L）
a、Replacing gravity type dehydrator to realize efficient concentration of sludge.
b、Flocculation and concentration operating together makes dewatering easy.
c、Optimize concentration of slurry for dewatering with solenoid control valve.
2、Rings substitute filter cloth, self cleaning, no clogging, easy treatment
The traditional dewatering equipment are easily got blocked while the dewatering screw press allows continuous operation with no clogging due to the moving of the fixed rings and moving rings cleaning itself. Therefore, it’s especially good at oily sludge with excellent performance. Moreover, it doesn’t need additional water for high-pressure cleaning so that no small or secondary pollution will be produced.
3、Low speed operation,low noise,low energy consumption, only 1/8 of the belt type, 1/20 of the centrifuge
4、Reduce the cost of infrastructure investment, improved the result of treatment
a、The dewatering screw press can directly treat the sludge from the aeration tank and the sedimentation tank so that the sludge thickening tank is not needed any more. Therefore, the construction cost can be greatly reduced and well avoided the phosphorus releasing problem.
b、Saving the cost of sludge thickening tank and other equipments investment.
c、Occupy smaller area, reduce construction investment for dewatering.
5、Fully automatic control, easy operation and maintenance
The dewatering screw press has no easy-blocking components like filter cloth or filtration pore inside. Its operation is safe and easy. It also can be set to operate automatically via the electric- control cabinet.
Model & Specifications
| Model | Capacity（kg-ds/h） | Size(mm) | Weight(kg) | Power(kw) | Distance from mud cake outlet to the ground (mm) | ||||
| L | W | H | |||||||
| LD-131 | 5-8 | 2200 | 500 | 1500 | 200 | 1 | 500 | ||
| LD-132 | 10-16 | 2200 | 850 | 1500 | 300 | 1.12 | 550 | ||
| LD-201 | 8-15 | 3000 | 900 | 1700 | 400 | 1.1 | 600 | ||
| LD-202 | 18-30 | 3300 | 1200 | 1700 | 600 | 1.5 | 600 | ||
| LD-301 | 30-50 | 3200 | 800 | 1750 | 800 | 1.5 | 650 | ||
| LD-302 | 50-80 | 3350 | 1200 | 1750 | 1400 | 2.25 | 650 | ||
| LD-401 | 90-150 | 4100 | 1000 | 2100 | 1800 | 2.25 | 750 | ||
| LD-402 | 160-250 | 4300 | 1300 | 2100 | 2500 | 3.75 | 750 | ||
