Sludge Dewatering Equipments 404

During operation, sludge enters the filter cartridge from the feed port and is propelled towards the discharge port by the rotating screw shaft. As the pitch between the screw shaft’s rotations gradually decreases, the pressure on the sludge continuously increases, and dewatering begins under the pressure difference. Water flows out through the filtration gap between the fixed and movable rings. Simultaneously, the equipment utilizes the self-cleaning function between the fixed and movable plates to clean the filtration gaps and prevent clogging. After thorough dewatering, the sludge cake is discharged from the discharge port under the propulsion of the screw shaft. Our company has developed targeted machines based on different sludge properties, resulting in more practical structures and lower operating costs.

Product Descriptions

Operating Principle

Metering Tank
Sludge is pumped into the metering tank via a sludge transfer pump. Excess sludge is returned to the sludge storage tank via a return pipe.

Flocculation Mixing Tank
The metered sludge is thoroughly mixed with injected high-molecular-weight flocculant in the flocculation mixing tank to form good flocs.

Dewatering Unit
After entering the dewatering unit through the sludge inlet, the sludge undergoes gravity concentration in the initial thickening section, with most of the liquid being discharged. In the dewatering section, the continuous increase in internal pressure ensures thorough dewatering. “The dewatering body of the sludge thickener does not include a dewatering section.

Sludge Discharge Point/Concentrated Sludge Discharge Point
A back pressure plate installed at the discharge point generates a reverse blocking force, thereby further increasing the pressure within the body cavity, allowing the sludge to be dewatered more thoroughly and discharged from the discharge point in the form of a sludge cake. The sludge thickener discharges concentrated sludge from its discharge point.” The sludge thickener’s discharge point does not typically have a back pressure plate.

Features

  • Screw presses are suitable for dewatering high- and low-concentration sludge. When dewatering low-concentration (2000 mg/L) sludge, there is no need to construct thickening tanks or storage tanks, reducing construction costs and minimizing phosphorus release and anaerobic odor generation.
  • It does not clog, reducing flushing water consumption, saving water costs, and reducing the burden on the internal circulation caused by backflow of washing water.
  • The electrical control cabinet, flocculation mixing tank, and dewatering unit are integrated, reducing floor space and simplifying installation.
  • The dewatering machine operates in a largely closed system, providing stable and timely processing, minimizing on-site odor and improving the working environment for operators.
  • It enables fully automatic 24-hour operation, reducing the labor intensity of operators.
  • The screw shaft operates at a low speed, only 2-3 revolutions per minute, resulting in low power consumption and virtually no vibration or noise on-site.
  • The machine body is almost entirely made of stainless steel, maximizing its service life. Only the screw shaft and moving ring need replacement, ensuring a long service life.
  • Daily maintenance is quick and simple.

Basic Parameters

ModelDimensionsSingle Unit PowerSludge InflowDS Processing Capacity
AODL-101L2100*W760*1350[mm]0.37+0.2=0.57[kW]0.1-0.3m³/h4-10kg/h
AODL-201L2900*W800*1500[mm]0.55+0.2=0.75[kW]0.4-1m³/h9-20kg/h
AODL-202L3000*W960*1500[mm]0.55*2+0.55=1.1[kW]1-2m³/h18-40kg/h
AODL-301L3300*W900*1720[mm]0.55+1.1=1.65[kW]1-3m³/h30-60kg/h
AODL-302L3500*W1200*1720[mm]0.55*2+1.1=2.2[kW]2-6m³/h60-120kg/h
AODL-303L3700*W1600*1800[mm]0.55*3+1.1=2.75[kW]3-9m³/h90-180kg/h
AODL-401L4300*W1100*1900[mm]1.1+1.1=2.2[kW]1.5-6.5m³/h80-200kg/h
AODL-402L4400*W1400*1900[mm]1.1*2+1.1=3.3[kW]3-13m³/h160-380kg/h
AODL-403L4400*W2000*1900[mm]1.1*3+1.1=3.3[kW]4.5-19.5m³/h240-550kg/h
AODL-404L4500*W2400*1900[mm]1.1*4+1.1*2=6.6[kW]6-26m³/h320-750kg/h