Sand - Grit Separator wwtp CLS
This equipment is separates sands by extraction, in wastewater treatment of various sector municipal or industrial. It is also called sand classifier or sand washer.
Composition of Grit removal:
– a decantation hopper
– U-section through
– A shaftless screw conveyor, conveniently go into proportion, for extraction, transport and unloading sands
The wastewater (water + sands / grit) enters the hopper through a flanged inlet: here, decantation and settling of the solid particles takes place on the bottom of the tank. The special screw conveys the separated material toward the discharging spout.
The clean water comes out of the hopper thanks to an overflow system linked to a flanged outlet. The low rotational speed and the special anti-wear covering fixed on the transport section assure an high efficiency and a low wearing of the machine’s internal parts.
Advantages of Grit separator:
– Design and manufacture customized
– No mechanical parts in contact with the sewage
– Low erection and maintenance costs
– Possibility of sand washing before discharging
– Completely close machine
Sand - Grit Separator "Coanda" Washer CLS/LC
Grit – sand washing CLS / LC separate and wash sand from wastewater of various nature: municipal and industrial of different types. It consist of a large conical hopper for sand setting, sedimentation and washing, and a tubular screw for conveying and dehydration the collected material.
The conical shape of the hopper, the special counter-washing system and the low rotational internal stirrer allow the machinery to wash the sands and separate the organic matter. This equipment is completely enclosed by sealing and cover in order to avoid the odours and contamining matter outcoming.
Functions of Grit Washer:
On the upper part of the hopper there is a flanged inlet introducing the material to be treated in the machine. The conical shape of the hopper and the movement system through the low rotational stirrer make a twirl enabling the sand washing and setting. The heavier sand particles settled on the bottom of the hopper where a counter-current system allows the washing; therefore the washed material reaches the coupling linking to the screw.
On the side of the hopper there is a proper outlet allowing the outcoming of the lightest material. The screw on the bottom of the machine is able to extract the collected material, dehydrating it and uplifting it towards the outlet in order to convey it in a container.
