In other words, it must meet strict quality criteria and be used so that it will benefit the environment. Thermophilic digested biosolids ready to spread as a fertilizer Biosolids is the treated organic residue or sludge from municipal wastewater treatment.
Raw sludge is separated from the wastewater and treated in digesters.
The resulting biosolids is an excellent soil conditioner and organic fertilizer. The first three options do not allow the recovery and use of organic matter, valuable nutrients, and essential elements from the solids. Land application involves recycling biosolids to soil at rates that will benefit the soil, and avoids the environmental and economic costs of the first three options. The GVRD has adopted a policy of beneficial reuse for biosolids produced in the region. This page was last updated on 15 June 2000.