EcoWater CHC Series, Service And Troubleshooting Manual, Page: 19 / 130

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3.0 THEORY OF OPERATION
EcoWater CHC supplies both water treatment and filtration systems.
CHC Water Treatment System-
The CHC Water Treatment System consists of a pump and treatment chamber. As water enters into the
main suction pipe it passes through the basket strainer. The basket strainer is designed to remove any
large particles from the water before it enters the CHC pump. Isolation valves are located at both the
inlet and outlet of the basket strainer and are used to isolate the basket strainer from the water flow
during servicing. The pump utilizes a centrifugal pump to pressurize the water to the required pressure
for the Hydrodynamic Cavitation to occur in the CHC treatment chamber. The CHC treatment
chamber consists of two proprietary nozzles that create a high speed water stream that are aimed
directly at the opposing water stream. As these two streams collide, a vortex is created, it is within this
vortex that the Hydrodynamic Cavitation cloud is created. The pressure regulation valve located on the
discharge of the CHC chamber is used to control the required 2-5 psi back pressure for appropriate
operation of the chamber. As water leaves the chamber it then passes through the discharge pipe and
back to the tower’s sump. A vent may be provided at the top of the discharge pipe, to break any
vacuum that could be created as the water suddenly drops into the sump.
CHC
CHC
C H C
Refer to the CHC web site (www.ecowaterchc.com) for more information regarding the CHC
chamber’s configuration and the technology behind its operation.
Filtration System-
As water is drawn in from the basin it passes through the main suction pipe and passes through the
basket strainer. The basket strainer is designed to remove any large particles from the water before the
water passes to the pump. Isolation valves are placed on both the inlet and outlet of the basket strainer
to allow for isolation of the basket strainer during the required servicing. The water then enters the
skid pump. The skid pump utilizes a centrifugal pump that delivers water to the filtration system. As
the water leaves the pump it passes through a centrifugal separator that removes all heavier than water
particles. A timed purge cycle, removes the debris from the separator and passes it to the drain as
needed. Once past the separator, water then flows back towards the tower while a portion is pulled
through a side stream, automated screen filtration unit. This second stage filter, utilizes a fine screen to
filter out any particulate out of the water stream that may be lighter than water. As the filter’s screen
becomes clogged, the differential pressure between Inlet and Outlet increases causing the PLC to
initiate a back wash of the filter. When a back wash is initiated, water is driven into the rinse piston at
the end of the filter. The rinse piston opens the back wash drain valve, and as water passes out of the
drain it crease a Venturi effect that is used to suck off any debris from the filter’s screen. Once the