SCH Number 2024120578

Project Info

Title

Sidestream Treatment System Project at the Fresno-Clovis Regional Wastewater Reclamation Facility

Description

The City of Fresno owns the Fresno-Clovis Regional Wastewater Reclamation Facility (RWRF). The City has a land-based disposal permit operating under Waste Discharge Requirements (WDR) R5-2018-0080.In 2018, the Central Valley Regional Water Quality Control Board (Regional Board) amended the Water Quality Control Plan for the San Joaquin River Basin (Basin Plan) to incorporate a Central Valley-wide Salt and Nutrient Management Planning. As a result, the City is expected to receive a new WDR in the next few years that will limit effluent nitrate concentrations to 10 milligrams per liter (mg/L) nitrate nitrogen (NO3-N), with an Action Plan required at an effluent nitrate concentration of 7.5 mg/L NO3-N. While the RWRF does remove some nitrogen, performance upgrades are needed to progress towards meeting these anticipated nitrate targets. The City proposes upgrades to the RWRF which include a biological process on the dewatering sidestream that converts ammonia to nitrogen gas, which will reduce the total nitrogen discharged from the plant (Proposed Project).

2 documents in project