A, sludge dewatering machine introduction
Sewage after precipitation process produces a large amount of sludge, even after enrichment and digestion process, the moisture content is still as high as 96%, volume is very big, difficult to given disposal, must through dehydration processing, increase the fixed rate of mud cake, in order to reduce sludge stacking area.
Second, the classification of sludge dewatering machine
Generally large and medium-sized sewage treatment plant adopts mechanical dehydration. Many different kinds of dewatering machine, according to the principle of dehydration can be divided into vacuum filtration dehydration, pressure filtration dehydration and three types of centrifugal dehydration.
1. The belt filter sludge dewatering machine
Belt filter dewatering machine is composed of upper and lower two tension belt with sludge layer, from a series of regularly arranged roller pressure in the cylinder is S form, rely on the tension of belt itself form a crushing and shearing force of the sludge layer, the layer of sludge water capillary extrusion, obtain higher solid content of mud cake, so as to realize sludge dewatering.
2. The centrifugal sludge dewatering machine
Centrifugal dewatering machine is mainly composed of reproduced with hollow rotor of screw conveyor, sludge by hollow shaft into the drum, under the effects of the centrifugal force at high speed, people turn to the hub cavity was immediately. Sludge particles larger proportion, making centrifugal force is bigger also, was dumped on the hub on the inner wall, form a solid layer; Water density is small, centrifugal force is small, only produce liquid layer in solid layer inside. Solid layer of sludge in the spiral conveyor, driven by slow to reprint, on the tip of the cone to be delivered by the reprint export around the continuous eduction, liquid is composed by four overflow weir platoon to reprint, assemble the back out of the dryer.
3. The plate and frame type filter sludge dewatering machine
Plate and frame filter press is by extrusion plate and frame, make the sludge water through the filter cloth, the purpose of dehydration. It is mainly composed of concave type filter plate and frame, automatic, pneumatic loop system board suspension system, filter plate vibration measurement and control system, air compressor, filter cloth washing device of high pressure and the fuselage side photoelectric protection device, etc.
Three, the sludge dewatering machine features:
1. The automatic operation of the sludge dewatering machine, the most save manpower, maintain management easy.
2. Good mechanical performance is excellent durability, and covers an area of the province.
3. The sludge dewatering machine suitable for all kinds of sludge dewatering, high efficiency, large quantity.
4. Multiple dehydration, dehydration capability, low moisture content of sludge cake.
5. The sludge dewatering machine to save energy, low power consumption, low speed, no vibration noise.
6. Belt type filter cloth continuous operation, automatic washing, easy to operate.
7. The sludge dewatering machine filter cloth sinusoidal automatic correction, smooth operation.
8. Installing filter cloth, for easy, maintenance simple.
9. The sludge dewatering machine agents added quantity is little, operation cost is low, the price is reasonable.
The technical parameters of sludge dryers:
|
Product specification
|
Production capacity(t/h)
|
power(kw)
|
Cylinder speed(r/min)
|
|
Φ0.6×8 m
|
1.5-2.8
|
4
|
8
|
|
Φ0.8×10 m
|
3.0
|
4
|
7.5
|
|
Φ10×10 m
|
3.3-4.9
|
5.5
|
5.8
|
|
Φ1.2×10 m
|
4-6
|
7.5
|
4.8
|
|
Φ1.5×12 m
|
4-6
|
10
|
4.8
|
|
Φ1.5×15 m
|
7-12
|
18.5
|
4.8
|
|
Φ1.8×12 m
|
7-12
|
18.5
|
4.1
|
|
Φ2.2×12 m
|
12
|
18.5
|
3.2
|
|
Φ2.2×14 m
|
12
|
22
|
3.2
|
|
Φ2.2×16 m
|
10-13
|
30
|
3.2
|
|
Φ2.4×14 m
|
10-14
|
30
|
3
|
|
Φ2.4×18 m
|
25
|
37
|
3
|
|
Φ2.4×20 m
|
32-36
|
37
|
3
|
|
Φ3×20 m
|
40-50
|
55
|
2.59
|
|
Φ3×25 m
|
45-58
|
75
|
2
|
|
Vegetable mesh belt ...
