How are biosolids generated and processed?
Biosolids are created through the treatment of domestic wastewater generated from sewage treatment facilities. The treatment of biosolids actually begins before the wastewater reaches the sewage treatment process at such facilities. In many larger wastewater treatment systems, pre-treatment regulations require that industrial facilities pre-treat their wastewater to remove many hazardous contaminants before it is sent to a wastewater treatment facility. Wastewater treatment facilities monitor incoming wastewater streams to ensure their recyclability and compatibility with the treatment plant process. Once the wastewater enters the treatment system, it goes through physical, chemical and biological processes which clean the wastewater and remove the solids. If necessary for reuse, the solids are then digested to convert organic matter to carbon dioxide, or treated with lime to raise the pH level, to control objectionable odors. Thus the wastewater treatment system processes wastewater s
Biosolids are created through the treatment of domestic wastewater, and thus, generated from sewage treatment facilities. The treatment of biosolids can actually begin before the wastewater reaches the sewage treatment plant. In many larger wastewater treatment systems, pre-treatment regulations require that industrial facilities pre-treat their wastewater to remove many hazardous contaminants before it is sent to a wastewater treatment plant. Wastewater treatment facilities monitor incoming wastewater streams to ensure their recyclability and compatibility with in-house treatment plant processes. Once the wastewater reaches the plant, the sewage goes through physical, chemical and biological processes which clean the wastewater and remove the solids. If necessary, the solids are then treated with lime to raise pH level high enough to kill microbes and eliminate objectionable odors. Today’s wastewater treatment processes sanitize wastewater solids to control pathogens (disease-causing
Biosolids are created through the treatment of domestic wastewater generated from sewage treatment facilities. The treatment of biosolids can actually begin before the wastewater reaches the sewage treatment plant. In many larger wastewater treatment systems, pre-treatment regulations require that industrial facilities pre-treat their wastewater to remove many hazardous contaminants before it is sent to a wastewater treatment plant. Wastewater treatment facilities monitor incoming wastewater streams to ensure their recyclability and compatibility with the treatment plant process. Once the wastewater reaches the plant, the sewage goes through physical, chemical and biological processes which clean the wastewater and remove the solids. If necessary, the solids are then treated with lime to raise the pH level to eliminate objectionable odors. The wastewater treatment processes sanitize wastewater solids to control pathogens (disease-causing organisms, such as certain bacteria, viruses and
Biosolids are generated when solids accumulated during domestic sewage processing are treated further to meet regulatory requirements. Wastewater residuals are produced wherever the population is concentrated enough to require a centralized domestic wastewater treatment facility. These treatment plants continuously generate sewage sludge that must be disposed of by one of several means, including the production of biosolids. Sewage sludge becomes biosolids when it undergoes pathogen control treatment that meets federal and state sewage sludge regulatory requirements, followed by land application to beneficially recycle it. Sewage sludge that is disposed of by landfilling or incineration is not biosolids. Wastewater treatment sometimes begins before the wastewater reaches the general treatment facility. In many larger wastewater treatment systems, regulations require that industrial facilities pre-treat their wastewater to remove many hazardous contaminants (metals like lead and cadmium
