Belt filter press/belt concentration dewatering

Belt type concentration and dehydration integrated machine

Belt type thickening and dewatering integrated machine and belt filter press are commonly used sludge dewatering machines in sewage treatment. Belt filter press is divided into gravity thickening sludge dewatering zone, wedge-shaped pressing zone, low-pressure sludge dewatering zone, and high-pressure sludge dewatering zone. After being automatically mixed with flocculants in a static mixer, the sludge enters the gravity concentration zone for sludge dewatering, and then undergoes compression in the wedge-shaped pressing zone, transforming from a semi-solid state. After being pressed in the low-pressure zone, the sludge enters the high-pressure zone, where it is subjected to repeated four pole pressing and shear forces. The moisture content of the sludge cake can reach 75% -70%, and is scraped off by a wear-resistant scraper driven by a guide wheel. Dingyu Environmental Protection Company can also provide you with sludge dosing systems, sludge and flocculant mixing systems, flocculant dosing equipment, dosing devices, and dissolution system equipment that are compatible with belt dewatering machines/belt filter presses.
Belt dewatering machine/belt filter press is suitable for various sewage treatments such as domestic sewage treatment, electroplating sewage treatment, textile printing and dyeing sewage treatment, papermaking sewage treatment, etc., with a wide range of applications. This sludge dewatering machine has a unique multi-stage sludge dewatering design, with high sludge dewatering efficiency and low water content in the filter cake. The belt type concentration and dewatering machine is capable of continuous operation with low speed and high efficiency. It is equipped with a fully automatic anti deviation belt device and a pressure increasing and reducing device, making it an easy to operate, highly reliable, and safe belt type sludge dewatering machine.
Working principle of belt filter press
1. Pre treatment stage - using gravity settling concentration method to concentrate the raw slurry, forming sludge with higher concentration and smaller volume. Then, the concentrated sludge is mixed with polymer flocculants. Under the action of the flocculants, fine particles aggregate into flocs and preliminarily precipitate into sludge, preparing conditions for sludge dewatering.
2. Gravity dewatering - The pre treated sludge is sent to the filter belt of a belt filter press. Under the action of the self weight of the sludge, free water outside the flocs is filtered out of the filter belt, reducing the water content of the sludge.
3. Wedge pre pressure dewatering - After gravity sludge dewatering, the fluidity of the sludge is almost completely lost after pre pressure dewatering in the wedge section, ensuring that the sludge will not be squeezed out in the press dewatering section of the belt filter press under normal circumstances.
4. Roll dewatering - Under the repeated squeezing and shearing action of multiple reasonably arranged roller shafts in the belt filter press, a large amount of capillary water is removed from the sludge, gradually reducing its moisture content. Then, it is squeezed by precision rollers to form block shaped sludge cakes with extremely low moisture content. The belt concentration filter press integrates concentration, pressure filtration, and dewatering, making it easy to use and highly effective in treatment.
[Purpose]
Belt dewatering machine/belt filter press is widely used for sludge dewatering in urban domestic sewage, printing and dyeing, textile, papermaking, food, pharmaceutical, chemical, metallurgical, petroleum and other fields.
Composition of Belt Dehydrator/Belt Filter Press
The composition mechanism of the belt filter press environmental protection equipment mainly consists of the following eight parts.
1. Sludge mixing and feeding device. It consists of a sludge mixer or static mixer and a feeding hopper. The material and flocculant are fully mixed and reacted by the mixer before flowing to the feeding hopper, which then spreads the material flat on the filter belt.
2. Tensioning device. The tensioning device of the belt type concentration and dehydration integrated machine is composed of upper and lower tensioning rollers, tensioning cylinders, pressure regulating valves, etc. The tension of the filter belt can be adjusted within the range of 50-78N/cm, and the tension of the upper and lower filter belts can be adjusted separately.
3. Transmission device. The filter belt drive of this sludge dewatering machine adopts a stepless reducer, which is manually controlled to adjust the speed of the filter belt travel from 0.8-8m/min, and the normal speed is 2.0-3.0m/min.
4. Deviation adjustment device. The adjustment device of this belt type concentration filter press is composed of an adjustment roller, a calibration cylinder, a pressure gauge, a valve, and a control valve for the filter belt calibration machine.
5. Filtering and pressing device. It consists of upper and lower filter belts, gravity sludge dewatering section, "Qi" - shaped pressing section, "S" - shaped pressing section, etc. The "S" - shaped pressing section is composed of several dewatering rollers of different diameters. Under the tension of the filter belt, they are wrapped and squeezed in an "S" shape. The diameter of the rollers gradually decreases from large to small, forming a certain pressure gradient, which causes the sludge to undergo a pressing process from small to large pressure.
6. The flushing device of the belt dewatering machine consists of nozzles, drainage boxes, water blocking rubber plates, etc. Connect the flushing water pump to continuously flush the filter belt. When the nozzle is blocked by suspended solids and dirt in the water, the dirt on the nozzle should be removed in a timely manner.
7. The unloading device of this sludge dewatering machine consists of a knife holder, scraper plate, unloading roller, tension spring, etc.
8. The frame of this sludge dewatering machine is welded from various types of steel and coated with anti-corrosion paint.
Main features of belt filter press
1. Belt type concentration and dehydration integrated machine, integrating concentration, pressure filtration, and dehydration, with small volume, light weight, small footprint, low power consumption, and high sludge cake efficiency.
2. Bridge type double pivot fully automatic pneumatic tensioning mechanism.
3. The belt type concentration and dehydration integrated machine adopts mechanical continuously variable speed to adjust the running speed of the filter belt.
4. The press roller and guide roller are made of stainless steel material, which is corrosion-resistant and has a long service life.
5. The belt type concentration filter press adopts pneumatic correction and is equipped with an alarm and emergency shutdown system.

Performance parameters of belt type concentration and dehydration integrated machine

model	External dimensions (L)x(W)x(H)mm	bandwidth (mm)	Processing capacity (M3/h)	power (Kw)	Belt speed (M/min)	Rinse consumption (M3/h)	Rinse water pressure (Mpa)	air pressure (Kpa)	Mud cake with water filtration (%)
REH-500	4000x836(1240)x1500(1950)	500	2.5-5	1.1	1.5-7	6	0.3-0.7	≥0.4	70-80
REH-600	4000x936(1340)x1500(1950)	600	3-5.5	1.1	1.5-7	6	0.3-0.7	≥0.4	70-80
REH-750	4000x1086(1490) x1500(1950)	750	3.5-6	1.1	1.5-7	6	0.3-0.7	≥0.4	70-80
REH-800	4000x1136(1540)x1500(1950)	800	4-7	1.1	1.5-7	6	0.3-0.7	≥0.4	70-80
RXF-1000	4000x1336(1740)x1500(1950)	1000	5-8	1.1	1.5-7	14	0.3-0.7	≥0.4	70-80
RXF-1200	4000x1536(1940)x1500(1950)	1200	6-10	1.1	1.5-7	14	0.3-0.7	≥0.4	70-80
RXF-1500	4000x1536(1940)x1500(1950)	1500	6-10	1.1	1.5-7	14	0.3-0.7	≥0.4	70-80
RXF-2000	4500x2370(2700)x1900(2400)	2000	10-16	2.2	1.5-7	18	0.3-0.7	≥0.4	70-80