Sample Requirements - Delta Environmental Products ECOPOD-N Series Safety Instructions Installation And Service Manual

Seasonal Use Guidelines Of ECOPOD-N
Fixed Film Wastewater Treatment System
These guidelines are for conditions as outlined below and apply
for systems that are not in use for periods of time indicated. Site
conditions not covered by the following must be forwarded to
Delta for recommended guidelines to meet the particular site
conditions.
1. System is not in use for more than one month and less than
three months. Electrical power is left on and there are no
frost conditions.
• Leave air pump on and system running.
2. System is not in use for more than three months. Electrical
power is turned off and there are not frost conditions.
• Remove all materials and liquid from tank.
• Refill with clean water.
• Turn off air pump.
3. System is not in use for more than three months. Electrical
power is on and there are no frost conditions.
Leave air pump on and system running; OR
•
• Remove all material and liquid from tank.
• Refill with clean water.
• Turn off air pump.
4. System is not in use. Electrical power is turned off and there
are frost conditions.
• Remove all material and liquid from tank.
• Turn off air pump.
• If high ground water is present, fill with clean water.
• If no ground water is present, leave tank empty.
UNDER NO CIRCUMSTANCES SHOULD THE AIR PUMP BE
TURNED OFF FOR MORE THAN A FEW DAYS WITHOUT
REMOVING TANK CONTENTS.

Sample Requirements

An ECOPOD-N Fixed Film Wastewater Treatment System
™
properly operated and maintained should provide the following
effluent quality as determined through the analytical methods
described in NSF/ANSI 245:
Biological Oxygen Demand 5 day average (BOD
30 mg/1 (or ppm);
Suspended Solids (SS of less than 30 mg/1 (or ppm);
Volatile suspended solids of less than 30 mg/1 (or ppm);
PH of 6.0 to 9.0;
Total Nitrogen reduction of 50% (Minimum) of influent TN
Dissolved oxygen 1.5 to 3.0 mg/1 (or ppm).
Taking Effluent Samples
Samples must be taken in the effluent discharge line or an effluent
pump or after the disinfection device. We recommend allowing
the effluent to flow through the discharge pipe for a minimum of
two minutes before taking the sample. This will allow any solids to
be flushed out that might have accumulated in the discharge pipe.
Please find attached drawings of a Sample Port.
SAMPLING SHOULD BE TAKEN BY A LOCAL CERTIFIED
TESTING LABORATORY OR BY FOLLOWING THEIR
PROCEDURES. THE FOLLOWING RECOMMENDED
GUIDELINES MAY BE USED IF LOCAL PROCEDURES ARE
NOT AVAILABLE.
™ 1. Biochemical Oxygen Demand (BOD)
Samples for BOD analysis may degrade significantly during
storage between collection and analysis, resulting in low BOD
values. Minimize reduction of BOD by analyzing the sample
promptly or by cooling it to near freezing temperature during
storage. However, even at low temperature, keep the holding
time to a minimum. Warm the chilled samples to 20° C be-
fore analysis; some storage time can be used to accomplish
this conveniently.
a. Grab Samples: If analysis is begun within two hours of
2. Total Suspended Solids (TSS)
Use resistant-glass or plastic bottles, provided that the mate-
rial is suspension does not adhere to container walls. Begin
analysis as soon as possible, because of the impracticality of
preserving the sample. Refrigerate sample at 4° C to mini-
mize microbiological decomposition of solids.
3. Phosphorous
If phosphorus forms are to be differentiated, filter samples
immediately after collection. Preserve by freezing at or below
-10° C. Add 40 mg/HgCl
they are to be stored for long periods. Do not add either
acid or 2CHCI
to be determined. If total phosphorus alone is to be deter-
mined, add 1 ml concentration HCL or freeze without any
additions.
Do not store samples containing low concentrations of phos-
phorus in plastic bottles unless kept in a frozen state because
phosphates may be absorbed onto the walls of plastic bottles.
Rinse all glass containers with hot diluted HCL, then rinse
several times in distilled water. Never use commercial deter-
gents containing phosphate for cleaning glassware used in
phosphate analysis.
4. Ammonia Nitrogen
) of less than
5
Most reliable results are obtained on fresh samples. Destroy
residual chlorine immediately after sample collection to pre-
vent its reaction with ammonia. If prompt analysis is impos-
sible, preserve samples with 0.8-ml concentration H
samples and store at 4° C. The PH of the acid-preserved
samples should be between 1.5 and 2. Some wastewater
may require more concentration H
acid preservation is used, neutralize samples with NaOH or
KOH immediately before making the determination.
5
collection, cooling is unnecessary. If analysis is not started
within two hours of sample collection, keep sample at or
below 4° C from the time of collection. Begin analysis
within six hours of collection; when this is not possible
because the sampling site is distant from the laboratory,
store at or below 4° C and report length and temperature
of storage to the Lab. In no case, start analysis more than
24 hours after grab sample collection. When samples are
to be used for regulatory purposes, make every effort to
deliver samples for analysis within six hours of collection.
/L to the samples, especially when
2
as a preservative when phosphorus forms are
3
SO /L
2 4
SO to achieve this pH. If
2 4