Tweets by 2023 EWRI Congress

304 Views

Oral

Emerging & Innovative Technologies (Interdisciplinary)

Emerging and Innovative Technologies in Water Treatment and Energy Infrastructure

The New Headworks Odor Control BioTrickling Filter Project: Performance Data and Operations & Maintenance Challenges at Hyperion Water Reclamation Plant in City of Los Angeles, California

Wednesday, May 24, 2023

1:45 PM – 2:00 PM PDT

Room: La Sirena I

Author(s)

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

Env. Eng
City of Los Angeles

Co-Author (not attending)(s)

Sheri Symons, P.E.

Environmental Engineer
City of Los Angeles
Shahrouzeh Saneie, Ph.D., P.E.

Sr. Env. Eng.
City of LA
Nicole McIntosh

City of LA
Joel Jimenez

City of LA
Octavio Murillo

Env. Eng Assoc.
City of LA
Steve Gonzales

Murray Company
Mohamadali Sharbatmaleki, Ph.D., P.E.

Professor
CPP
Hugo Loáiciga, Ph.D., P.E.

Professor
University of California

Within the City of Los Angeles, the Hyperion Water Reclamation Plant (HWRP), operated by LA Sanitation & Environment (LASAN) with an average dry weather capacity of 450 mg/d, has gone through upgrades & phases to protect the environment through sustainable practices while meeting stringent permit regulations. 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. One such upgrade is the new Headworks Odor Control Biotrickling Filter (BTF) system. This upgrade will replace the existing five (5) chemical wet scrubbers, three (3) carbon towers, and two (2) chemical storage tanks. In its place, four (4) BTFs and eight (8) carbon scrubber tanks have been designed to remove hydrogen sulfide (H2S) from the Influent and Headworks foul air stream. Starting on December 21, 2021, the first BTF unit was put in operation with the other three BTF units following shortly thereafter. Results have been outstanding with an average of over 99% H2S removal occurring in the BTF process and design air flow rate of 66,000 scfm. Currently, temporary carbon towers are being used until the permanent carbon towers can be placed and put into operation. It is estimated that sometime in Q4 of 2022 that the permanent carbon towers will be installed and in operation. The performance data and Operations & Maintenance (O&M) challenges at HWRP will be discussed and the total project cost is just over $14M. The performance data, air emissions measures, O&M challenges, and future BTF advancements will be presented for LASAN’s new technology BTF odor control systems.