Sludge dewatering technology

Summarize

The belt sludge thickening and dewatering machine is an efficient solid-liquid separation equipment with continuous operation, which integrates sludge thickening and dewatering. The whole dehydration system implements mud feeding, dosing, mixing and reaction, and carries out flow line operation such as dehydration and mud cake output under laminar flow condition. It is suitable for continuous concentration and dehydration of sludge with different properties. The sludge retention time of the equipment is short and the treatment efficiency is high.

The belt thickening dehydration machine adopts the fully enclosed belt thickening dehydration machine. An integrated system of sludge thickener and filter press.

Operating principle

Flocculants flocculating agent in the preparation of device pumped to the static mixer, the mixer is small in size, good mixing effect), mixes with sufficient material, enter the condensed section, under the effect of flocculant and gravity, the enrichment Duan Youxiao off most of the free water, and then sent to filter by discharging period after gravity dehydration, the material is flip agencies discharge between two closed belt, squeeze dewatering by a pair of main dehydration roller and the series from big to small diameter of roller, arranged in an s-shaped to filter cake from small to large extrusion, shear force, to remove most of the free water from the material and parts of the purpose of the capillary water. The whole dehydration process of the belt concentrating filter press is continuous, and its working process is generally: flocculation - feed - concentration section gravity dehydration - concentration section unloading - pressure filter section gravity dehydration - pressure filter section prepressure dehydration - pressure filter section press dehydration - discharge.

Performance characteristics

The belt type concentration dehydrator is mainly composed of concentration section (feeding device, tensioning device, distributing device, chassis, rectifying device, detection and protection device, washing device, transmission device, unloading device, etc.). Press and filter section (bracket and shield, transmission device, tensioning device, rectifying device, detection and protection device, filter belt washing device, series press and guide roller and filter cake unloading device) and control system are composed of three parts. The auxiliary equipment is mainly composed of mud pump, flocculant preparation and feeding system, horizontal and inclined shaft-less screw conveyor, etc.

The operation mode of dehydrator and supporting equipment is manual/automatic.

The belt dehydrator runs smoothly and normally, without impact, vibration or abnormal sound.

The belt thickening dehydration all-in-one machine has the characteristics of automatic deviation correction, sensitivity and reliability. Automatic cleaning filter belt, good filtering effect; With automatic protection shutdown function; Low energy consumption and obvious energy saving effect. All the other equipments which are matched with the belt concentration dehydration machine have good working performance and qualified quality assurance.

With the function of limiting and adjusting the thickness of mud layer, the filter cake moisture content of the dehydrated sludge is ≤77%.