BIOMIN, INC.
State
of the art water filtration media
We will lower
operations costs by 50%, and bring them into compliance with discharge
regulations.
(248) 544-2552. Fax: (248) 544-3733
E-Mail: biomin@aol.com
Web: www.biomininc.com
Technical Advisory #13*
BIOMIN’S “TIP OF THE MONTH”
CONTINUOUS CHLORINATION KEEPS “OILSORB”
ORGANOCLAY/CARBON BEDS CLEAN
“Oilsorb” organoclay/carbon beds which are used to clean wastewater
sometimes become clogged because of the growth of algae or biomass. This
results in increased pressure drop, and forces early change out of the
“Oilsorb” organoclay and carbon beds. This can be
prevented, by applying “continuous chlorination”. The method is as follows:
Initial Preparation:
1.
Take the adsorber off line. Set up for backwash cycle.
2.
Use a
“PULSA-feeder” or similar chemical injection pump and apparatus and insert
system into line. Hardwire to system pump to allow for operation of chemical
feeder to coincide with pump operation.
3.
Use a plastic
feed tank suitable to store chlorine. Use standard hypochlorite, such as
Clorox, of 5.25% activity. Dilute as necessary to allow for dosing range of
pump to be in the 2-20ppm feed range based on pump flow rate.
4.
Feed into the adsorber some 20-25 ppm of
chlorine, no more than 30 ppm, or enough to exceed
the oxidant demand. Backwash vigorously.
5.
Turn off chemical
feed pump and rinse off excess chlorine with another backwash.
6.
Reset system to
normal cycle.
Continuous Feed
Operation
1.
Take the adsorber off line. Insert injection tee into feed side of adsorber.
2.
Use a
“PULSA-feeder” or similar chemical injection pump and apparatus and insert
system into line. Hardwire to the system pump to allow for operation of
chemical feeder to coincide with pump operation.
3.
Use a plastic
feed tank suitable to store chlorine. Use standard hypochlorite, such as
Clorox, of 5.25% activity. Dilute as necessary to allow for dosing range of
pump to be in the 2-20ppm feed range based on pump flow rate.
4.
Feed into the adsorber some 2-3 ppm of chlorine,
no more than 5 ppm, or enough to exceed the oxidant
demand.
5.
Check system
effluent for chlorine, minimize effluent chlorine to
0.5ppm.
6.
Check system
frequently for chlorine drop or rise in effluent.