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High Pressure Dewatering Belt
BNSD Continuous Sludge
Deep Dewatering Machine
BNSD High Pressure Belt For
Continuous Sludge Deep Dewatering
BNSD High Pressure Belt For Continuous Sludge Deep Dewatering
Introduction
The high pressure belt BNSD, continuous sludge deep dewatering technology, treats sludge cake (with average moisture content of 80%), with the addition of sludge stabilizer. After deep dewatering, the sludge moisture is reduced to below 60%, to meet landfill standards of sludge disposal. Also it can be used as extra treatment for drying, incineration, bricks making, cement kiln processing, or other treatment technologies to improve the overall dewatering process in an economic way.
High Stability
Low Power
Small footprint
Odor Control
Easy Installation
Automatic Operation
Working Principle
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Step One:
The sludge cake, with ~80% moisture, is mixed with sludge stabilizer to reach a uniform texture.
Under the high efficiency mixer effect, the bonds between the sludge particles is destroyed, increasing the porosity, and then discharged in form ofgranules, to improve the deep dewatering effect. -
Step Two:
The granulated sludge enters the continuous sludge deep dewatering machine, to achieve the extra dewatering effect under the high pressure & the intensive force of the double belts.
According to the theory of filtration and squeezing, the thinner the sludge cake, the larger of the cake pores, the smaller moisture resistance, the better pressing & filtering effects. The secondary dewatered sludge cake is shaped like ~10mm flakes size, with moisture content below 60%, easy to crush and to dry. -
Step Three:
The discharged cake moisture is greatly reduced, and ready for final disposal.
Process Flow
Process Characteristics
| Process | Process advantages and characteristics |
| Odor control | Fully enclosed design, suitable for odor collection |
| Installed power | The installed power of the complete system cannot exceed 35 Kw, around 2 % of ancient similar system |
| Footprint | Small footprint and same level installation, generally installed after the first dewatering process |
| Operation | Automatic and continuous simple operation, from sludge loading to discharge |
| Safety | Highly safe, no high pressure media, safety enclosures for the belts and the granulating system |
| Implementation in existing dewatering facility | Seamless and easy installation of the units. No extra works to be done, same connection of the filtrate. No dewatering room expansion as the system has small footprint and flexible installation |
| Technology type | High pressure belt dehydration technology | High pressure plate & frame dehydration technology |
| Foot print | Small footprint | Large footprint |
| Civil works | Can be installed without any changes, or may need slight civil modification | Need large civil modification |
| Operation | Continuous operation | Intermittent operation |
| Installed power | Around 30 kW (based on 50 Ton/day processing) | About 250 kW (based on 50 Ton/day processing) |
| Operational Performance | Automatic operation, less interventions | Need manpower to shovel the sludge, heavy workload |
| Sealing efficiency | Fully sealed covers | Opened equipment, poor sanitary conditions |
| Existing sludge dewatering unit | Compatible, easy to install, no modifications needed | Need equipment dismantling. Mechanical, electrical and plumbing modifications needed |
High Pressure Belt Dewatering Machine
Top inlet horizontal high pressure belt type BNSD continuous sludge deep dewatering machine
Top inlet horizontal high pressure belt type BNSD continuous sludge deep dewatering machine
Top inlet horizontal high pressure belt type BNSD continuous sludge deep dewatering machine
Low inlet vertical type
high pressure belt type
BNSD continuous sludge
deep dewatering machine
Skid mounted dewatering
screw press with
integrated BNSD deep
dewatering machine
Skid Mounted
continuous sludge
dewatering machine
BNAD High Pressure belt
sludge deep
dewatering machine
Sludge Stabilizers Preparation & Mixing Systems
BNDM sludge stabilization mixer
BNPT sludge stabilizer dosing system
Specifications
| Model | Processing Capacity | Outline Dimensions / mm | Belt Width (mm) | Sewage Treatment Plant Scale (m3/day) | Installed Power (kw) | ||
| L | W | H | |||||
| BNSD-0.5 | 0.15-0.35 | 4320 | 1200 | 2330 | 500 | 10,000 | 10 |
| BNSD-1.0 | 0.3-0.8 | 4320 | 1400 | 2330 | 750 | 10,000-30,000 | 15 |
| BNSD-2.0 | 0.75-1.5 | 4320 | 1700 | 2330 | 1000 | 30,000-50,000 | 20 |
| BNSD-3.5 | 1.5-3.0 | 4320 | 2200 | 2330 | 1500 | 50,000-100,000 | 25 |
| BNSD-5.0 | 2.5-5.0 | 4320 | 2700 | 2330 | 2000 | ＞100000 | 35 |
Benefit the Environment
Beneny Group has more than 10 subsidiaries, with total assets of morel than 80 million USD. Benenv has more than 60 national patents and a number of international certifications, such as ISO9001 international quality system certification, CE EU certification, Ecovadis certification, etc.