To better understand the importance of biosolids and proper waste management, there is a need to recognize the unique process that goes through for the generation of biosolids. In general, biosolids are produced when solids resulting from the treatment of wastewater are treated further to meet the regulatory requirements of the government.
Pre-treatment of wastewater
Before biosolids are generated, the wastewater materials that will be turned into organic materials will undergo quality control. This will take place before the wastewater reaches the Water Pollution Control facility. The reason for this is to eliminate contaminants from the wastewater and make it easier for the treatment facility to turn these into biosolids.
The sewer system is a sanitized facility, so when the wastewater reaches it, the contaminants have been removed already. It is important that the sewer system remains free from all hazardous materials that might derive from industrial plants, households, hospitals, and other establishments. At the pre-treatment plants, the water is tested to make sure that all contaminants and hazardous wastes have been removed already.
Separation of solids and water
At the wastewater treatment facility, the water is tested and monitored to make sure it is free from materials that could otherwise harm the biosolids to be produced. The facility must also ensure that the wastewater from the stream is compatible with the treatment process.
After the confirmation that there is no conflict between the wastewater and the treatment process, it will undergo through a series of biological, physical, and chemical process that will separate the water from the solid materials.
In the digestion phase, the solids that have already been separated from the water will heated through to kill any microorganisms, bacteria, and contaminants that could prove to be hazardous to the ultimate output–biosolids. After this process has been completed in treatment facilities, the biosolids can now be used as fertilizers in agricultural fields or be thrown in landfills without the risk of contamination.
Part of the duty of each municipality is to educate households on how to separate their garbage and how to dispose them properly. The education of households is important to make sure that it will be easier for the pre-treatment facilities to decontaminate the water and for the water treatment facility to separate the water from the solids and eventually turn these into biosolids. There are also established local depots to reduce the discharge of hazardous chemicals to the wastewater stream.