The Deep Aquifer Treatment System (DATS) is an 8-million gallon per day (mgd)
nanofiltration (NF) color removal treatment plant that has operated for the past six years. When the
plant was initially put in operation monthly membrane profiles for conductivity (EC) and UV<sub>254</sub>
absorbance were routinely conducted on permeate samples from each of the three treatment trains
pressure vessels to monitor for potential membrane system integrity including permeate water
quality degradation due to compromised interconnectors, brine seals, end adaptors, o-rings and the
membranes.
A reduced membrane integrity sampling regime was adopted in 2004 based upon the excellent
performance of the membrane system. Towards the end of 2006 and through the spring of 2008
membrane performance had degraded and it appeared that membrane replacement in several
pressure vessels may have been warranted. Staff then renewed its membrane profiling to identify the
apparent membrane performance "breeches" that resulted in significant savings over the membrane
replacement option. This paper reviews and demonstrates the importance of implementing
standardized membrane profiles and profiling as troubleshooting tools, and presents results of the findings at
the DATS facility that assisted operators in correcting "breeches" in membrane system integrity
that are consistent with what are considered the standards for the industry. Includes 3 references, tables, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 950 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 14 |
| Published : | 11/01/2009 |
