The Western Riverside County Regional Wastewater Authority (WRCRWA) Plant meets effluent (wastewater) and recycled water quality standards through its primary, secondary, and tertiary treatment processes. The Plan also has solids handling processes to thicken, digest, dewater, and dispose of solids produced from the wastewater. The processes of wastewater treatment are summarized as follows:
- Primary Treatment: Wastewater flow enters the treatment facility through two force mains. Primary treatment consists of coarse screening, grit removal, flow metering, primary clarification, and flow equalization.
- Secondary Treatment: After passing through the primary treatment processes, secondary treatment occurs through conventional activated sludge in two bio-reactors. The activated sludge then passes through secondary clarification, where return activated sludge is pumped back to the bio-reactors and waste activated sludge is sent to the digestion process.
- Tertiary Treatment: Effluent from the secondary clarifiers enters the tertiary treatment processes. This treatment consists of a flash mix station, where a coagulant can be injected if high turbidity is detected upstream or downstream of the filters. Flow then passes through tertiary filters, flow metering, and chlorine disinfection.
- Recycled Water: As part of JCSD’s proposed recycled water system, treated wastewater from the chlorine disinfection will then be delivered to the proposed recycled water storage and pumping system. This system consists of lift pumps, a storage tank, and the proposed recycled water distribution pumps.
