87
B.)
Object-specific dimensioning of systems with local tanks
For systems with local tanks, INTEWA is entitled to issue an NSF Declaration of Conformity which
entitles the user to carry the NSF certificate. For this purpose, INTEWA performs a plant-specific
verification of compliance with the specifications of the INTEWA NSF report. See the confirmation of
the official NSF listing (s. section 2.4). In case of using local tanks, the systems are linearly upscaled.
Confirmation Checklist
Inlet greywater water
Daily flow rate must be within the operating range of
estimated average daily supply.
Inlet water quality must meet the NSF definition of
greywater from bathing and laundry or better in
terms of BOD, TSS, and other parameters listed
previously.
Confirmation:
PURAIN Pre-Filter
Based on 40% of average flow to the system within a
3 hour time period.
Confirmation:
Bioreactor Working Capacity
Working volume between AQUALOOP minimum
(700mm) and maximum treatment tank level (max. 2
m) , min. 1/2 daily flow and max. twice daily average
flow.
Confirmation:
AQUALOOP Filtration Units
Based on NSF 350 certification testing, up to 5400
LPD (1428 GPD) can be treated on average per
GW5400L filtration commercial scale unit.
Confirmation:
AQUALOOP Growth Media
Growth media design regarding NSF certification: 1 x
AL-FK 30 per 300 L daily treatment volume at 180
PPM BOD.
Confirmation:
AQUALOOP Blower and Aeration
Blower size regarding NSF certification requires 200
LPM per membrane station. Additional aeration is
required for systems exceeding 1800 liters per day per
station. This is done through diffusors which require
a flow of 0.33 LPD per liter of average daily greywater
flow.
Confirmation:
AQUALOOP Sludge Pump
Based on recommended 25% of bioreactor volume
draw down on a weekly basis as by NSF 350 testing.
Confirmation:
AQUALOOP Controller
Confirmation:
Summary of Contents for AQUALOOP GW 10800
Page 12: ...11 Fig AQUALOOP System 1200 L day 317 GPD Fig AQUALOOP System 1800 L day 476 GPD...
Page 13: ...12 Fig AQUALOOP System 3600 L day 952GPD Fig AQUALOOP System 5400 L day 1428 GPD...
Page 37: ...36 Fig Electrical connection plan upper pump lower pump...
Page 39: ...38 Fig Control cabinet of multiple membrane station controller...
Page 42: ...41 7 1 3 Expansion membrane station controller Fig Control cabinet of expansion controller...
Page 89: ...88 Designed and provided by INTEWA GmbH or to be separately approved alternative...
Page 90: ...89 INTEWA GmbH Version 1 1 a Subject to technical changes...