Description: An Indirect Route with Direct Results
The use of recycled water for IPR is regulated in California to ensure protection of public health and water quality. IPR refers to the augmentation of groundwater or surface water with highly treated recycled water. IPR through groundwater replenishment, which is the focus of the program, has been conducted for decades in California.
PublisherWater Environment Federation
206
Description: An Indirect Route with Direct Results
A significant first step for this program is the construction of a 1.9 million L/d (0.5 mgd) AWT demonstration facility, located within the Sanitation Districts’ JWPCP, as shown in the photo on p. 34. The process train consists of a membrane bioreactor (MBR), a reverse osmosis (RO) system, and an ultraviolet light with an advanced oxidation process (UV/AOP) for disinfection and organic...
PublisherWater Environment Federation
362
Description: An Indirect Route with Direct Results
Metropolitan and the Sanitation Districts are collaborating on treatment technology acceptance with regulatory agencies, including DDW and the Los Angeles and the Santa Ana RWQCBs, concurrent with the development and operation of the demonstration facility.
PublisherWater Environment Federation
517
Description: An Indirect Route with Direct Results
While the primary objective of the testing and monitoring plan is to obtain technology acceptance for the MBR process, additional objectives are to ensure that the final product water would meet all regulatory requirements. Metropolitan will routinely monitor numerous locations throughout the demonstration facility treatment train to assess the efficacy of the proposed unit processes.
PublisherWater Environment Federation
680
Description: An Indirect Route with Direct Results
During the pretesting phase starting in October 2019 through May 2020, the demonstration facility operated in a process acclimation mode to establish NdN. The goal during NdN operations was to achieve complete nitrification resulting in an ammonia concentration of less than 0.5 mg/L, followed by partial denitrification resulting in MBR filtrate nitrate of 10 to 12 mg/L. After startup at the...
PublisherWater Environment Federation
646
Description: An Indirect Route with Direct Results
Secondary MBR testing. Following completion of testing according to the testing and monitoring plan for tertiary MBR treating non-nitrified secondary wastewater effluent, the demonstration facility will transition to treatment of primary wastewater effluent with a secondary MBR for another approximately 14 months. The plan for secondary MBR testing would be patterned after the tertiary MBR...
PublisherWater Environment Federation
544
An Indirect Route with Direct Results