NaikEnviro
recommends on-line equalization to blend various streams
of wastewater and to attenuate hourly variations. Equalization
systems are designed by computer simulations using input
flows and characteristics. NaikEnviro software generates
expected outflow parameters and their variations, which
are used as inputs for design of downstream processes.
NaikEnviro takes full cognizance of the need to conserve
neutralizing chemicals through self or auto neutralization.
OFF-LINE
equalization is provided for highly toxic or concentrated
streams to further dampen variability of on-line equalized
effluent.
For
sewage treatment systems, equalization is provided to cover
morning and evening peak discharges and to provide a steady
flow to the plant.
Screening
and other essential pre-treatments are provided upstream
of the
equalization tank.
NEUTRALIZATION AND/OR CHEMICAL COAGULATION AND PRECIPITATION
Provided
for industrial effluents in which chemical solutions are
injected into a static mixer which is a Stainless steel
or HDPE tube with a static mixing element.
A
mix of chemicals is injected by a set of metering pumps
into the static mixer to enable vigourous mixing with the
incoming effluent.
The
mix de-stabilizes color and suspended colloids and renders
the same amenable to flocculation.
Dissolved
colour producing compounds are adsorbed on the active floc
formed by the chemicals injected.
Heavy
metals are precipitated by the maintaining the pH in the
optimal range.
Advantages
of the static mixer:
Static
mixer utilizes residual head of the raw effluent pump thereby
saving power.
Elimination
of moving parts simplifies maintenance.
