SRCSD - Biosolids Management Program

Biosolids Management Program

Sacramento Regional Wastewater Treatment Plant (SRWTP)

Water Recycling Program

Wastewater Source Control Section

Biosolids Management
Program Overview

Intro | Biosolids Recycling Facility
Solids Too Valuable To Waste | Contact Info

Sacramento Regional County Sanitation District has developed a diversified biosolids management program that is both environmentally friendly and of high value to ratepayers. This program is two-pronged, consisting of both recycling biosolids into environmentally beneficial products and applying biosolids to land disposal units. (Click here to see Processing Split Diagram.)

Each year the Sacramento Regional Wastewater Treatment Plant processes 26,000 dry tons of biosolids, making the program one of the largest producers of biosolids in California. Approximately 70 percent of those biosolids are treated and then injected into on-site land disposal units. The remainder are beneficially recycled at the District's Biosolids Recycling Facility (BRF).

Photo: Solid Storage Basin - 15 feet of solids with two feet of water on top to contain odor

Solid Storage Basin - 15 foot deep pond where biosolids are further stabilized for 3 to 5 years before being applied to land disposal units.

Biosolids are rich in nitrogen and contain phosphorus, potassium and micro-nutrients, all necessary to the growth process. As a fertilizer, biosolids retain soil moisture, helping to reduce soil erosion. As a soil enhancer, biosolids can be marketed as dry, pelletized, odorless fertilizer; as green waste compost in which the biosolids are mixed with natural plant materials; or as the garden-variety compost.

A continuing component of the District's Biosolids Management Program includes ongoing community outreach. The District is continuing its efforts to educate the public, farmers, and community leaders on the benefits of biosolids recycling, which can be done safely and effectively.

Mudcat" pumping solids from bottom of pond into pipes leading to the hydrants on the DLDs

Injector at land disposal unit injecting solids into ground

See Biosolids Fact Sheet* for more details.

*Requires Adobe Acrobat's
free reader, available here:
If you have problems with PDF files on this site, please read this.