Presentation Title

Purified Water Replenishment Brine Concentration Pilot Project

Faculty Mentor

Dr. Simeng Li, Dr. Ali Sharbat, Dr. Xudong Jia

Start Date

23-11-2019 12:45 PM

End Date

23-11-2019 1:00 PM

Location

Markstein 102

Session

oral 3

Type of Presentation

Oral Talk

Subject Area

engineering_computer_science

Abstract

Although the concept of harvesting potable water from unconventional sources such as storm water, gray water, wastewater and saline water, is not new, its feasibility has become a significant undertaking for users in the last decade. Inland communities are especially interested in indirect potable reuse (IPR) as a strategy in their future water supply portfolio and as a promising solution to their brine disposal limitation. Moreover, the challenge of energy efficiency has played a major role in the applicability of novel processes such as reverse osmosis (RO) in the advancement of IPR. As interest in IPR increases, new technology development and pilot testing become more critical. In this study, closed-circuit reverse osmosis (CCROTM) is tested as the main RO process at the San Jacinto Valley Regional Water Reclamation Facility (SJVRWRF). Through a partnership between Cal Poly Pomona students and the Eastern Municipal Water District (EMWD), the CCRO pilot is operated for brine concentration and minimization with the purpose of determining the maximum sustainable recovery achievable on tertiary effluent. The pilot plant process includes ultra-filtration (UF) membranes for pretreatment, an equalization tank, and EMWD’s existing Desalitech Reflex R5 CCRO system. Based on recovery results from CCRO application on brine concentration generated from groundwater RO treatment, CCRO is expected to achieve at least 98% recovery when applied to tertiary effluent. Other parameters to consider will include total organic carbon (TOC), turbidity, total suspended solids (TSS) and energy savings as compared to conventional or semi-batch RO processes. The results of this CCRO pilot test are expected to support its large-scale application in IPR by overcoming the brine disposal limitation of inland water treatment agencies.

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Nov 23rd, 12:45 PM Nov 23rd, 1:00 PM

Purified Water Replenishment Brine Concentration Pilot Project

Markstein 102

Although the concept of harvesting potable water from unconventional sources such as storm water, gray water, wastewater and saline water, is not new, its feasibility has become a significant undertaking for users in the last decade. Inland communities are especially interested in indirect potable reuse (IPR) as a strategy in their future water supply portfolio and as a promising solution to their brine disposal limitation. Moreover, the challenge of energy efficiency has played a major role in the applicability of novel processes such as reverse osmosis (RO) in the advancement of IPR. As interest in IPR increases, new technology development and pilot testing become more critical. In this study, closed-circuit reverse osmosis (CCROTM) is tested as the main RO process at the San Jacinto Valley Regional Water Reclamation Facility (SJVRWRF). Through a partnership between Cal Poly Pomona students and the Eastern Municipal Water District (EMWD), the CCRO pilot is operated for brine concentration and minimization with the purpose of determining the maximum sustainable recovery achievable on tertiary effluent. The pilot plant process includes ultra-filtration (UF) membranes for pretreatment, an equalization tank, and EMWD’s existing Desalitech Reflex R5 CCRO system. Based on recovery results from CCRO application on brine concentration generated from groundwater RO treatment, CCRO is expected to achieve at least 98% recovery when applied to tertiary effluent. Other parameters to consider will include total organic carbon (TOC), turbidity, total suspended solids (TSS) and energy savings as compared to conventional or semi-batch RO processes. The results of this CCRO pilot test are expected to support its large-scale application in IPR by overcoming the brine disposal limitation of inland water treatment agencies.