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Pre-Delivery Tank Preparation
The Hydro-Kinetic tank equipment package contains some components that are cast-in the tank during the manufacturing
process, and other components that are installed after the casting process is complete. Some components of the intermediate
recirculation assembly provided in the equipment package must be installed in the tank prior to delivery. In addition, the
distributor will need to provide a pretreatment outlet tee, an aeration chamber inlet elbow and Bio-Film Reactor outlet tees
if these components have not been cast in place. Norweco recommends assembling all of these components, as well as
the Bio-Film Reactor elements, before the tanks are delivered to the installation site. Install components according to the
following steps:
1.
For a one-piece tank, solvent weld the 4" Schedule 40 PVC pretreatment outlet tee to the coupling that was cast-in the
outlet of the pretreatment chamber (distributor to provide). Solvent weld the 4" Schedule 40 PVC aeration chamber
transfer elbow into the coupling cast-in the inlet of the first aeration chamber (distributor to provide).
2.
For all systems, begin in the external anoxic chamber and solvent weld subassembly S1 into the pipe provided with
subassembly S11 that does not have a coupling glued onto one end. Dry fit the coupling on the second section of pipe
in subassembly S11 to the first pipe. Do not glue subassembly S11 at this time. The pipes in this subassembly will
need to be trimmed to length when the tanks are set.
3.
Slide the first subassembly S2 through the opening cast in the wall between the first and second aeration chambers.
The coupling side of this subassembly S2 should be oriented towards the outlet side of the tank. Lower the second
subassembly S2 into the first aeration chamber and solvent weld the pipe side of the subassembly into the coupling
cast into the inlet of the first aeration chamber. Solvent weld the pipe from the second subassembly S2 into the
coupling from the first subassembly S2.
4.
Starting in the second aeration chamber, pass subassembly S3 through the wall into the clarification chamber. Solvent
weld the coupling on subassembly S2 to subassembly S3. See Figure 2.
5.
Inside the clarification chamber, solvent weld the elbow from subassembly S4 to the pipe from subassembly S3. The
elbow from subassembly S4 should be oriented as shown in Figure 2, with the short stub of pipe parallel to the floor
and ceiling of the tank.
6.
Place the Bio-Film Reactor elements into the media chamber of the Bio-Film Reactor tanks. They will rest on the
support rib cast into the media chamber. The Bio-Film Reactor elements should be installed with the media service
hatch oriented toward the middle of the tank and facing up. See Figure 3.
S11 S12 S2
S1
AERATION
ANOXIC
CHAMBER
CHAMBER
FIGURE 2
7.
Using the universal tool, rotate the two slide locks on each Bio-Film Reactor element so that they lock into the recesses
cast into the tank.
Tank Delivery and Setting
1.
When installing a Hydro-Kinetic system, first check the length, width and depth of the excavation. Insure the excavation is
long enough to allow at least 1' between the pretreatment and anoxic tanks, at least 1' between the anoxic and treatment
tanks, and at least 2' between the treatment tank and the Bio-Film Reactors for installation of the interconnect plumbing
and backfill between the tanks. The excavation should have sufficient overdig to allow for a minimum of 6" clearance
around the entire perimeter of the system. Additional overdig will be required on deep installations or where unstable soil
conditions exist. Safe working conditions must be established and maintained during the entire installation procedure.
S2
S3
S4
AERATION
CLARIFICATION
CHAMBER
CHAMBER
INLET
BIO-FILM REACTOR
ELEMENTS
INFLUENT
CHAMBER
Page 2
ROTATE SLIDE
BIO-FILM REACTOR
TANK
FIGURE 3
OUTLET
LOCKS
MEDIA
CHAMBER
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