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2024 EWRI Congress

Water, Wastewater & Stormwater

Closing Loops: Adapting Wastewater Management to Circular Economies and Climate Shifts

182 - The New Intermediate Pumping Station Odor Control BioTrickling Filter Project: Operations, Maintenance, and Performance Data at Hyperion Water Reclamation Plant in City of Los Angeles, California

Tuesday, May 21, 2024

5:30 PM – 5:45 PM CT

Room: S 103 A

Author(s)

K. Majid Sadeghi, Ph.D., P.E.

Hyperion Water Reclamation Plant, LA Sanitation & Environment - City of Los Angeles

Co-Author(s)

Ali Sharbat, Ph.D., P.E.

California State Polytechnic University, Pomona
AM

Austin Milo

Hyperion Water Reclamation Plant, LA Sanitation & Environment - City of Los Angeles
Bill Hewes

Carbon Activated Corporation
DZ

Daniela Zayas

Hyperion Water Reclamation Plant, LA Sanitation & Environment - City of Los Angeles
Hugo Loáiciga, Ph.D., P.E.

Professor
University of California
Joel Jimenez

City of LA
Nicole McIntosh

Hyperion Water Reclamation Plant, LA Sanitation & Environment - City of Los Angeles
Octavio Murillo

Env. Eng Assoc.
City of LA
Shahrouzeh Saneie, Ph.D., P.E.

Sr. Env. Eng.
Hyperion Water Reclamation Plant, LA Sanitation & Environment - City of Los Angeles
Sheri Symons, P.E.

Environmental Engineer
City of Los Angeles

LA Sanitation & Environment (LASAN) operates Hyperion Water Reclamation Plant (HWRP) in the City of Los Angeles (City) with an average dry-weather capacity of 450 mg/d. The HWRP has been operating since 1892 and LASAN core mission has championed the protection of public health and the environment. Separately from the proper primary and secondary water treatment, HWRP is currently applying an advanced system with the goal to be 100% recycled water by 2035. Part of the upgrade is the new Intermediate Pumping Station (IPS) odor control Biotrickling Filter (BTF) system. At the IPS, a total of 10 Archimedes Screws (hollow cylinder and spiral) lifts an average flow of 260 mg/d wastewater from primary to secondary treatment at HWRP. The original IPS foul air treatment had two (2) chemical wet scrubbers and two (2) chemical storage tanks. This old system was replaced by the new four (4) BTFs and four (4) carbon scrubber tanks at IPS air treatment structure. The project is designed to remove hydrogen sulfide (H2S) from the IPS foul air stream. Starting on September 13, 2021, the first BTF unit was put in followed shortly thereafter by the other three BTF units. Results have been outstanding with an average of over 99% H2S removal occurring in the BTF process and design air flow rate of 40,000 scfm. The total IPS BTF project cost is $7,849,000. The operations, maintenance, and performance data at HWRP will be discussed. The performance data, air emissions measures, operations & maintenance challenges, and future BTF advancements will be presented for LASAN’s new technology IPS BTF odor control systems.