Sludge Dewatering Wastewater Treatment Machine LW Decanter
Centrifuge
Product Description:
Horizontal spiral centrifuge is one of our company main products.
According to the requirement of the material used, we design the
horizontal spiral centrifuge with one motor, two motors driving. At
the same time, we design two motors separately on both sides of the
machine and motors on the same place of the machine. We also
develop three column horizontal spiral centrifuge, used in the
separation of coal tar oil, water, slag in the industry, in
petrochemical in the separation of oil, water, slag.
Main motor drive at full speed rotating drum, material put into
spiral continuously by feed tube, evenly distributed to the spiral
discharging port. Under centrifugal force, solid content settles to
the drum wall and is pushed out cone drum slag notch by the spiral
pusher. Liquid is overflow along the spiral to the drum big end. It
form big end set out liquid and small end set out solid.
The process of sludge dewatering :
The sludge dewatering system consists of five parts:
(1) Sludge feeding system, (2) Flocculant dosing system, 3)
Thickening and dewatering system,
(4) Mud cake delivery system, (5) Electronic control device of sets
of system;
Tenchical parameters:
| Type | Bowl diameter(mm) | Bowl length/ Bowl diameter | Bowl speed (r/min) | Main Power(Kw) |
| LW180 | 180 | 2.5-720 | 6000 | 3-5.5 |
| LW260 | 260 | 3.0-4 | 5000 | 7.5-11 |
| LW355 | 355 | 2-4.5 | 4000 | 11-30 |
| LW420 | 420 | 3-4.1 | 3600 | 18.5-37 |
| LW450 | 450 | 2-4.4 | 3600 | 18.5-37 |
| LW480 | 480 | 2-4.2 | 3200 | 18.5-45 |
| LW500 | 500 | 2-4.2 | 3200 | 18.5-55 |
| LW530 | 530 | 2-4 | 3200 | 22-55 |
| LW580 | 580 | 2-4 | 2800 | 30-55 |
| LW620 | 620 | 2-4 | 2800 | 37-110 |
| LW760 | 760 | 2-3.5 | 2500 | 55-132 |
| Note: In case of differences between the table and the user manual,
the latter shall prevail. |
working principle:
Basic principle of horizontalscroll discharge centrifuges (namely
decanter centrifuges): the light liquid, heavy liquid and solid
(dregs) in the mixed
liquid (suspension) have different densities and are immiscible,
and any two or three phases therein are then under different
centrifugal forces in
the centrifugal force field, resulting in different settling
velocities, then achieving thepurpose of separation, layering or
settling the
solid-phase particles in the liquid.
After entering into the high-speed turning drum,the solid-phase
particles in the mixed liquid run and settle on the drum wallunder
the action of
greatest centrifugal force; the light liquid settles at the
innermost place of the drum under minimum centrifugal force; and
the heavy liquid settles
in the middle (this phase exists in case of three-phase separation
or does not exists in case of two phases); same as the drum’s
turning direction, a screw feeder also turns at a high speed, and a
constant speed difference is generated by the differential
mechanism; the solid-
phase particles settled on the drum wall are then fed by the screw
feeder to the solid outletof the drum, and the light phase and
heavy phase (this
phase exists in case of three-phase separation or does not exists
in case of two phases) are then separated out of different outlets.
When used for two-phase separation, the machine is called two-phase
decanter centrifuge (also called horizontal scroll centrifuge), and
the
machine used for three-phase separation is called three-phase
decanter centrifuge. In our decanter centrifuges, the light liquid
is exhausted by
gravity force, and the heavy liquid is discharged by the
centrifugal force
Application:
Our centrifugal sludge dewatering machines can achieve sludge
thickening, sludge dewatering as well as thickening and dewatering
integration.
Thickening and dewatering of sludge arising from urban life, power
plant, petrochemical refinery, coking as well as from industries.
