WASTEWATER TREATMENT SYSTEM
TANK PUMPING INSTRUCTIONS
These instructions provide a general guideline concerning when and how to pump out the Singulair system. This literaturesupplements other instructional materials included in the Singulair Bio-Kinetic System Service Manual.
In order to maximize performance, protect system components and insure protection of the surrounding environment, theSingulair system should be thoroughly checked every six months by a factory-trained Norweco service technician. Aninitial service program that provides a minimum of four service inspections during the first two years of system operationis included in the system purchase price. Renewable service contracts to extend these routine inspections after the initialprogram expires are available from the local licensed Norweco distributor.
The pretreatment chamber of the Singulair system will periodically require pumping. Because the Singulair system is abiological treatment device, the time frames listed within these instructions are estimates. Actual pumping frequency willdepend on the amount and strength of the wastewater being treated.
Handling and disposal of pretreatment chamber contents, referred to as septage, or the contents of the aeration andclarification chambers, referred to as biosolids, are regulated by local, state and federal authorities. Disposal options mayinclude land application, lagoon treatment, municipal wastewater treatment or landfill disposal. Prior to arranging for tankpumping, contact the Norweco distributor to obtain complete information on access to chambers, removing equipment,coordination of services and disposal of tank contents.
During Singulair system installation and backfilling, do not allow dirt or mud to enter the system. Once in the system, dirtor mud will form a heavy sludge which will affect settling characteristics, interfere with filtration and degrade effluent quality.
If dirt or mud enters the system, it must be removed to insure proper system operation. Removing the dirt or mud mayrequire repeated flushing and tank pumping. For additional details refer to Singulair Tank Delivery and Setting instructions.
WHEN TO PUMP
The Singulair system is a biological treatment device and
Norweco distributors provide maintenance and service
should not require pumping as frequently as a septic tank.
inspections free of charge at regular six month intervals
Septic tanks are designed to store solids and perform
during the initial warranty period. These routine service
limited biological treatment. Frequent pumping of a
inspections will determine if a pretreatment chamber
septic tank is mandatory to remove and dispose of these
evaluation is necessary. The pretreatment chamber
solids before they discharge from the tank. The Singulair
should be evaluated by a factory-trained technician at
system is designed to biologically treat all incoming
least every three years to determine if pumping is
wastewater and return only a high quality effluent to the
required. Pumping of this chamber by a licensed tank
environment. The multiple operating processes contained
pumping and disposal service will likely be necessary at
within the plant accomplish primary, secondary and
3 to 5 year intervals, based on variations in system
tertiary treatment in each Singulair system. The
pretreatment chamber of the Singulair system is designedto retain non-biodegradable solids and allow
ROUTINE SERVICE INSPECTIONS
biodegradable solids to flow into the aeration chamber.
The aerobic treatment process in the Singulair system
Semi-annual service inspection procedures are outlined
utilizes these biodegradable solids to convert the
in detail in the Singulair Bio-Kinetic System Service
wastewater into carbon dioxide and water. This natural
Manual. These routine service procedures include
biological process minimizes the accumulation of solids
inspection of the aeration chamber, clarification chamber
and eliminates the need to pump the system as frequently
and effluent line to determine if the pretreatment chamber
as a septic tank. Because the Singulair system utilizes
should be evaluated. A brief outline of these routine
the biodegradable material found in wastewater to perform
service procedures, as well as the detailed steps required
biological treatment, pumping the system more often than
to perform a comprehensive pretreatment chamber
needed will not improve operational performance.
evaluation, are listed here. The results of the routine
Removal of the solids in the Singulair system will be
service inspection, pretreatment chamber evaluation and
required when indicated by an inspection or evaluation
tank pumping (when performed) should be noted on the
AERATION CHAMBER INSPECTION
SETTLEABLE SOLIDS TEST
A summary of the aeration chamber inspection procedure
A settleable solids test should be conducted as part of the
is listed below. For complete details on aeration chamber
aeration chamber evaluation during each routine service
service, refer to the Singulair Service Manual.
inspection to monitor system performance.
CAUTION: Any time an aerator or service pump is
To insure a well mixed sample is collected for the settleable
connected or disconnected, first shut off the selector
solids test, make sure the aerator has been running for at
switch in each Singulair control center. Failure to do
least 10 minutes. Collect the sample immediately after
so could result in personal injury or equipment damage.
turning off and removing the aerator and before the aerationchamber contents begin to settle. Using a graduated cone
1. Remove the vented concrete aeration chamber access
or other clear container, dip the container into the aeration
chamber to a depth of 21/2 feet. Set the container on a levelsurface and allow the solids to “settle” for 30 minutes while
2. Unplug the aerator and secure the closure cap in
you complete the service inspection. Do not disturb the
position to protect the electrical connector.
3. Lift the aerator straight up out of the access opening
After 30 minutes, read the level of solids and compare it
and lay it flat on the vented cover. DO NOT bump the
with the total liquid volume in the container. Calculate the
50%). If the settled materialcontains large pockets of clear
The solids should settle
with no clear separation. Thisshould not be interpreted as having
A settled solids level greater than 75% indicates excessive
6. Clean any debris from the aspirator shaft and flush the
solids in the aeration chamber and that the pretreatment
chamber may need to be pumped. In this case, apretreatment chamber evaluation must be performed. Refer
7. Visually check the aeration chamber surface for the
to the “Pretreatment Chamber Evaluation” section of these
presence of grease or oil. An accumulation of these
instructions for more details. If the pretreatment chamber
materials indicates the pretreatment chamber should
evaluation indicates pumping is not required, the aerator
operating cycle should be increased. Consult the localregulatory agency and the Singulair Time Clock Setting
8. Check the aeration chamber contents for the presence
instructions before adjusting the aerator operating cycle.
of non-biodegradable materials, paper, mop fibers,hair, grease or oil. A significant accumulation of these
In Singulair systems with more than one aerator, the
materials in the aeration chamber indicates the
settleable solids test should be conducted for each aeration
pretreatment chamber should be evaluated.
chamber. The results of all tests should be averaged todetermine the appropriate action. If test results indicate an
Repeat steps 1-8 for Singulair systems with multiple
aerator time cycle adjustment is necessary, adjust each
time clock to operate on identical run cycles.
Do not replace the aerator(s) until the Bio-Kinetic
The results of the settleable solids test, and any
system(s) have been removed from the clarification
adjustment made to the system time cycle, should be
recorded on the Service Inspection Card.
CLARIFICATION CHAMBER INSPECTION
EFFLUENT LINE INSPECTION
A summary of the clarification chamber and Bio-Kinetic
Check the groundwater relief point installed in the effluent
service inspection procedure is listed below. For complete
line to make sure it is free of obstruction. An
details on clarification chamber service, refer to the
accumulation of paper, fibers, hair or grease indicates that
Singulair Bio-Kinetic System Service Manual.
the Singulair system needs to be pumped. If there is asurface discharge point, make sure that it is free of debris,
Remove the system access cover and set aside.
foam, mud, etc. Make appropriate notations on theService Inspection Card.
Remove the optional Blue Crystal and Bio-Neutralizerfeed tubes. Do not allow the tubes to touch.
PRETREATMENT CHAMBER EVALUATION
Install the Outlet Sealing Tool into the receiving flange
The pretreatment chamber must be evaluated within three
to prevent loss of liquid from the Singulair system during
years of system start-up or the most recent tank pumping.
An evaluation must also take place any time a routineservice inspection indicates the chamber may be
Remove the Singulair aerator and place the service funnel
discharging excessive solids. This evaluation includes
measuring the depth of the floating scum and settledsludge layers to determine if pumping is required. If the
Using the universal tool, remove the flow deck and
pretreatment chamber evaluation indicates the chamber
chamber plate assembly from the Bio-Kinetic system.
does not require pumping, these evaluations should be
Place the assembly on the service funnel for cleaning.
repeated annually until pumping is necessary.
Using the universal tool, disengage all four black locking
PRETREATMENT CHAMBER INSPECTION
lugs to allow for removal of the outer chamber.
A complete pretreatment chamber inspection procedure
Lower the fixed handle of the universal tool into the upper
is listed below. The results of the inspection should be
lip of the Bio-Kinetic system outer chamber . Turn the
noted on the Service Inspection Card.
handle until the lifting tool is engaged into the lifting rib.
1. If the pretreatment chamber access opening is not
The outer chamber is equipped with a drain valve and fill
equipped with a riser and cover at grade, dig down to
valve to allow for easy removal and reinstallation during
the access opening in the top of the tank. The opening
service. Begin lifting the outer chamber from the tank.
is in line with the access opening for the aeration
The drain valve will automatically open as the outer
chamber and the system outlet. The access cover
chamber is lifted out of the clarification chamber.
should not be more than 12" below grade.
Remove the outer chamber from the mounting castingand set it on the upside down lid of the service container.
2. Remove the cover(s) and be careful not to allow dirt or
Repeat steps 1-8 for clarification chambers with
multiple Bio-Kinetic systems.
3. Visually examine the surface of the pretreatment
chamber for a significant accumulation of grease, oil or
Reinstall the Singulair aerator(s) as outlined in the
Singulair Aerator Service Instructions. The aerator(s)must be in operation while the remaining clarification
4. Using the hopper scraping tool, gently probe the
surface of the chamber to determine the thickness ofthe scum mat. Force the tool down through the scum
10. Check the surface of the clarification chamber for
mat, rotate the tool one quarter turn, then raise it until
the presence of grease or biologically untreatable
the bottom of the mat is felt. If the depth of the floating
material. A significant accumulation of these
scum layer has reached the bottom of the discharge
materials would indicate that the pretreatment
5. To check the depth of the settled sludge layer, secure
11. With the aerator running, use the hopper scraping tool
a rough white towel to the handle of the hopper
to gently scrape all areas of the clarification chamber
scraping tool and lower it to the bottom of the chamber.
Lower the tool behind the discharge tee (baffle) to avoid
12. Complete the clarification chamber service as
floating particles. Push the tool through the settled sludge
outlined in the “Clarification Chamber” section of the
layer to the bottom of the tank. Wait several minutes and
Singulair Bio-Kinetic System Service Manual.
carefully remove the tool. The depth of the settled sludgelayer will be shown by a dark line on the towel. If the
13. Make appropriate notations on the Singulair Service
settled sludge layer has accumulated to the bottom of the
Inspection Card and on the Owner’s Manual.
discharge tee, the chamber should be pumped.
Review the “Operational Requirements” section of the
2. Refer to the “System Capacity” table and advise the
Owner’s Manual with the owner. If lint, grease, scouring
pumping service what volume of liquid is to be
pads, diapers, sanitary napkins, cotton balls, cotton
swabs, cleaning rags, dental floss, strings, cigarette filters,rubber or plastic products, paints, thinning agents or other
3. For pumping the pretreatment chamber only, remove
harsh chemicals are discovered in the system, the owner
the pretreatment chamber access cover and insert a
should be cautioned regarding proper use of the system.
suction hose into the chamber. Lower the hose until itcontacts the bottom of the tank. Withdraw the hose
WHAT TO PUMP
approximately 2" and connect the opposite end to thepump being used to evacuate the chamber.
When pumping is required, normally it is necessary topump only the pretreatment chamber if the Singulair
4. Break up the scum mat to facilitate pumping. Activate
system has been serviced at regular 6-month intervals. If
the pump and remove the pretreatment chamber
service has been interrupted for an extended period of
contents. It is not necessary to wash down the
time, or if mud or toxic material is present, it may be
necessary to pump out the entire system. When pumping,it is not necessary to wash down the compartments unless
5. If the solids in the chamber are so concentrated that
significant quantities of grease, hair, fibers, mud, toxic
the suction hose cannot withdraw them, tank contents
substances or biologically untreatable materials are
may be back-flushed to break up the solid matter.
present. The following chart provides volumetriccapacities within each Singulair system:
6. If special circumstances require the total system to be
pumped, contact the local Norweco Singulairdistributor. Each aerator and Bio-Kinetic system must
be removed for full access to all chambers and toprevent damage to components.
Access to the contents of the aeration and
clarification chambers of Singulair systems should be
made only through an aerator mounting casting. Neverinsert the hose through the Bio-Kinetic system
7. A Singulair system that has been inactive
extended period of time or that has accumulated mud
or dirt during installation may have to be washed downwith fresh water and pumped out. This process may
have to be repeated for proper system operation.
HOW TO PUMP THE SINGULAIR SYSTEM
8. After pumping, fill all chambers to capacity with water.
Return all aerators, Bio-Kinetic systems and access
A complete Singulair system pumping procedure is listed
covers to their proper locations, as outlined in the
below. Prior to tank pumping, contact the Norweco
Singulair Service Manual. Be sure each control center
distributor to obtain complete information on equipment
selector switch is in the “automatic” position, and each
enclosure is secured with a tamper evident seal.
1. If any portion of the Singulair system requires pumping,
Following tank pumping, no other system adjustments are
contact a tank pumping service licensed by the local
necessary for proper biological treatment to continue.
regulatory agency. The septage or biosolids from the
Semi-annual service inspections by a factory-trained
system must be removed and disposed of in a manner
Norweco service technician should be conducted to insure
consistent with federal, state and local regulations.
DISTRIBUTED LOCALLY BY:
220 REPUBLIC STREET
NORWALK, OHIO, USA 44857-1156
TELEPHONE (419) 668-4471
FAX (419) 663-5440
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Bio-Static®, Bio-Gem®, Bio-Regeneration®, Bio-Perc®, Blue Crystal®, ClearCheck®, ChemCheck®, Service Pro®, Grease Buster® and “BUSTER”
logo® are registered trademarks of Norwalk Wastewater Equipment Company, Inc.
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