In other parts of the world, biosolids are a popular choice as sustainable agricultural fertilizer. Biosolids, also called treated sludge are organic materials that are rich in nutrients resulting from the treatment of domestic sewage in a treatment facility. When treated and processed, these residuals can be recycled and applied as fertilizer to improve and sustain productive soils and stimulate plant growth.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 parasites) and other organisms capable of transporting disease. (EPA)
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- improves crop production
- reduce soil erosion
- protects water quality
- reclaims strip-mined lands
- enrich forest land
- conserve landfill space
- provide economic incentives
When there are advantages there are disadvantages. Here are some of the disadvantages of biosolids:
- potential health hazard
- effects irreversible
- contamination resulting from industrial waste
- its true composition is unknown
- odor
The advantages and disadvantages make people have second thoughts about using biosolids. In my opinion biosolids are a legitimate kind and can be used as fertilizer. Biosolids have more advantages than disadvantages. Most, if not all of the Biosolids' disadvantages can be fixed or corrected through more research on the subject. Manure being used as a fertilizer and energy source is not new to us. Biosolids through research may also become a good alternative energy source because of its common properties with cow dung. If Biosolids were indeed an energy source, it would provide the world with the cheapest and most abundant energy source and with a number of energy sources becoming depleted, all the more do we need this source. We, the people can be the potential stakeholders of this resource.
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