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RIVERSIDE REGIONAL WATER QUALITY TREATMENT PLANT
Protecting Water Quality 24 Hours a Day
The plant is dedicated to providing sanitary sewer service for 280,000 residents in the City of Riverside and Jurupa, Edgemont, and Rubidoux communities. Our goal is to provide clean, pure water to protect the sensitive Santa Ana River environment. A team of 100 people operate the plant 24-hours a day, 365 days a year.
Wastewater from Riverside's residential, commercial and industrial contributors is collected through over 1,100 miles of sewer pipeline from 5 locations that flow into the plant. There are two speparate wastewater treatment plants and one common tertiary filtration plant.
 
RIVERSIDE REGIONAL WATER QUALITY TREATMENT FACTS
  
  Plant Location: Plant Processing:
  5950 Acorn Street Screening, Grit Removal  
  Riverside, California Primary Sedimentation  
    Biological Treatment  
  Treatment Capacity: Clarification  
  Design Capacity - 40 MGD Filtration  
  Average Daily Flow - 32 MGD Chlorination and Dechlorination  
  Average Peak Flow - 36 MGD Sludge Thickening  
    Anaerobic Sludge Digestion  
  Effluent Quality: Biosolids Dewatering and Drying  
  Nitrified Title 22 Standards Biosolids Disposal and Recycling  
    Constructed Wetlands  
  Sludge Generated:    
  20 dry tons per day (Current) Removal of Pollutants:  
  28 dry tons per day (40 MGD) Biochemical Oxygen Demand - 99%  
    Suspended Solids - 99%  
 
Primary Treatment Plant The first wastewater treatment involves several steps from screening out larger objects through the grit screen chambers to allowing the solids from the water to settle to the bottom of a primary sedimentation tank.
 
Secondary Treatment Plant The second treatment consists of biological treatment. Air is injected into the water to encourage microorganisms growth that consumes hazardous waste suspended in the water. The microorganisims eventually settle to the bottom of the secondary sedimnetation tank and are removed.
  
 

Tertiary Treatment Plant The final step in the process. Wastewater is passed through a filter to remove viruses and minute suspended particles. Chlorine is injected to the wastewater to disinfect bacteria. The final water product is then "dechlorinated" to protect the habitat in the receiving Santa Ana River.

Sludge Disposal Sludge produced during various treatment steps, is thickened and pumped to the digesters. The digested sludge is dewatered, dried and transported off-site for disposal.
 
 
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