Hydro Action AP Series Page 11 Operation & Maintenance Manual Download

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SECTION 6.0: Process Description

6.1:

The

Hydro-Action

AP Series

individual wastewater treatment plant is a
self-contained, extended aeration, aerobic
treatment facility utilizing the activated
sludge process. The plant consists of a
cylindrically shaped aeration tank with an
offset service access, a unique cone
shaped clarification compartment and an
outlet tee-assembly. Three fine-bubble
Teflon diffuser assemblies and the

Hydro-

Action

air pump are combined to provide

effective, efficient, and economical aeration.

6.2:

Domestic wastewater enters the

aeration compartment and is mixed
thoroughly with the already present mixed
liquor suspended solids (MLSS) activated
sludge. The injection of air through the
porous Teflon air diffusers placed near the
bottom of the aeration chamber is
responsible for this complete mixing. The
fine-bubble diffusers and the vortex area
between diffuser assemblies produce a high
magnitude of air diffusion and therein
provide ample mixing and a more than
generous quantity of dissolved oxygen to
maintain the aerobic environment even
under extreme conditions.

6.3:

Hydraulic displacement causes the

mixed liquor to enter the clarification
compartment and move upward toward the
outlet tee-assembly. Due to the calm
conditions in the clarifier, suspended solids
settle to the bottom where they are remixed
with the Mixed Liquor Suspended Solids
(MLSS) for additional biological treatment.
The remaining clarified effluent leaves the
plant via the outlet tee assembly and
discharge line.

6.4:

The AP Series ATUs are operated by

the OPS

. The OPS

integrates the

electrical controls, visible and audible
alarms and air pump in a protective
polyethylene enclosure. The OPS

can be

either platform mounted on the plant or
remotely located. These features plus; the
offset access, flexible air hose, and Teflon
diffuser assemblies make the plant
extremely reliable and easy to service. An
optional visible and audible alarm may be
added to remotely locate to an area of your
choice.

6.5:

The technology used in the

Hydro-

Action

plant allows it to produce excellent

effluent quality, which thereby meets all
ANSI\NSF International Standard 40 class I
and the Environmental Protection Agency’s
requirements of a secondary treatment
process. NSF requires that a Class I plant
shall be shown to meet EPA secondary
treatment guidelines for CBOD5, TSS, and
pH. The

Hydro-Action

AP Series ATUs

satisfy all these requirements.

SECTION 7.0: Safety

7.1:

Safety is an important issue in our

business since we deal with one of the more
potentially health hazardous materials
known: raw sewage. Domestic wastewater
carries in it members of a specialized group
of life known as microorganisms. Such
microorganisms are bacteria, viruses, algae,
actinomycetes, protozoa, fungi, rotifers,
crustaceans, and other members of both the
plant and animal worlds. The function of a
wastewater treatment plant is to treat the
water to a degree that the effluent is
relatively free of pathogenic bacteria and
nuisance microorganisms. Until the
wastewater entering the plant has had
sufficient time for treatment and disinfection,
it may contain any number of the harmful
organisms that cause disease.

7.2:

As raw wastewater may and usually

does contain some level of unsafe
microorganisms, proper respect and care
must be given to safety. When coming into
contact with raw sewage,

do not fear

the

contact, but

do take proper precautions

avoid potential danger.

7.3:

Follow these simple safety precautions

whenever exposed to wastewater:

• Wear disposable rubber gloves when
handling wastewater contaminated items
or chlorine tablets.

• Always wash with soap and water after
handling any contaminated item. The use
of good bactericide soap is strongly
recommended.

• Always dispose of scum, rags, trash,
debris, or soiled material in a proper waste
container.