norweco BIO-DYNAMIC 4000 Series Installation And Operation Manual

INSTALLATION AND OPERATION MANUAL
INTRODUCTION
The Bio-Dynamic Series 4000 tablet feeder is a complete dry
chemical dosing system for water or wastewater treatment.
It is designed to provide precise control over chemical
application and to maximize installation flexibility. All five
(5) models of the Series 4000 will treat liquid flows from
20,000 gallons per day (GPD) to 200,000 GPD. For non-flow
equalized wastewater applications, a peak flow factor of four
will allow the feeder to be used in treatment plants with a
design flow of up to 50,000 GPD. Constructed of heavy duty,
UV rated polyethylene for maximum strength and durability,
the feeder is entirely gravity
fed with no electro-mechanical
components. The feeder has
a variable dosage capability
depending upon general
component configuration,
the flow rate and the type of
chemical tablets used. The
Series 4000 tablet feeder is
designed to provide long-term,
unattended operation.
insure proper performance
and maximize operational
life, please take the time to
familiarize yourself with the
contents of this manual.
SYSTEM APPLICATION
The Series 4000 tablet
feeder is designed
treatment systems
utilize 2 / " diameter molded
5
8
chemical tablets. Applications
include potable water, process
water, wastewater, irrigation,
municipal, reservoirs, water towers, cooling towers, as well as
swimming pool backflush dechlorination. The system may be
installed and adjusted for long-term chemical dosage in any
of these applications. Each Bio-Dynamic has an internal fall
of 1" to insure complete drainage of liquid from the flow deck.
A built-in hydrodynamic mixing chamber provides maximum
contact between the applied chemical and the liquid. This
additional treatment step permits the Bio-Dynamic to be
installed without secondary tankage where regulations allow.
SERIES 4000 TABLET FEEDER
To
for
that
SERIES 4000 TABLET FEEDER
HOW THE SERIES 4000 WORKS
Each model of the Series 4000 is a flow rated proportional
feeder designed to safely apply chemicals into the flow of
any treatment system. Flow enters through the integral 6"
inlet hub and is channeled under an adjustable inlet baffle.
Liquid proceeds to the flow deck where the chemicals are
contained in four feed tubes. The flow deck has three
levels (tiers) which accommodate varying hydraulic loading
rates and channel liquid to the chemical tablets. Due to the
configuration of the flow deck, the tablet feeder can effectively
treat low, sustained, variable, intermittent and surge flows.
applies only to secondary effluent from residential wastewater
treatment systems up to 1,500 GPD. Certification requires
the use of Blue Crystal residential disinfecting tablets or Bio-
Sanitizer disinfecting tablets and a chlorine contact tank of
at least 11 / gallons. Contact tank retention time should be
1
2
sufficient to comply with the controlling regulatory jurisdiction.
USEPA guidelines state "On the average, satisfactory
disinfection of secondary wastewater effluent can be obtained
when the chlorine residual is 0.5 ppm after 15 minutes contact."
Active chemicals are released
as the liquid erodes the tablets.
As the flow rate increases,
the liquid level rises and
contacts more tablets, thereby
providing additional chemical
release. The liquid is then
channeled through an outlet
weir or optional sluice to further
regulate chemical application
by controlling the liquid depth
within the system. Properly
treated liquid then flows out of
the tablet feeder through the
integral 6" outlet hub.
SYSTEM PERFORMANCE
A proven disinfection device for
use with any treatment system,
the Bio-Dynamic is listed as
a certified chlorine dispenser
under NSF/ANSI Standard 46.
The Series 4000 tablet feeder
is rated for flows up to 200,000
GPD, however, Standard 46