Why is it important to treat Wastewater from Slaughterhouses?
The meat processing sector is one of the world's leading user of total freshwater used in agriculture and livestock. Because of the slaughtering process and the facility cleaning, meat processing plants (MPPs) generate enormous volumes of slaughterhouse wastewater (SWW).
Because of their high organics and nutritional content, SWWs require extensive treatment before they can be discharged into the environment in a sustainable and safe manner. As a result, SWW treatment and disposal are a public health need.
Slaughterhouse Wastewater treatment
The organic matter content in meat processing plant (MPP) effluents is typically high, and the residues are somewhat solubilized, resulting in a polluting impact owing to the high levels of organics and pathogens found in SWW, as well as cleaning detergents. Because of the varying pollutant loads resulting from the kind and quantity of animals slaughtered in the meat business, SWWs are normally analysed using bulk criteria.
Because of its efficiency in treating high-strength wastewater such as SWW while requiring less sophisticated equipment’s, anaerobic treatment is the recommended biological treatment. Although anaerobic treatment is effective, anaerobically treated effluents requires post-treatment to meet mandated discharge limits because anaerobic treatment alone cannot achieve total organic matter stabilization.
Anaerobically treated effluents include solubilized organic matter, which is more suited for aerobic treatment.
As a result, aerobic treatment systems run at greater rates than traditional anaerobic treatment methods. They are more commonly utilized in wastewater treatment systems.Given that oxygen needs and treatment time are directly proportional to wastewater strength, aerobic treatment is widely used as a post-treatment of anaerobic effluents as well as for nutrient removal.
However, when treating high-organic-strength wastewaters, biological processes alone do not yield effluents that meet current effluent discharge restrictions. The utilization of combination anaerobic and aerobic procedures is advantageous because of the possible resource recovery and high treatment efficiency.
Some slaughterhouse effluents, on the other hand, contain hazardous, bio-resistant, recalcitrant, and non-biodegradable chemicals. Thus, advanced oxidation processes (AOPs) might be employed to increase SWW biodegradability and inactivate dangerous bacteria and viruses that remain after biological wastewater treatment. As a result, AOPs, particularly as a post-treatment approach, are an appealing alternative and supplementary treatment options to biological processes for the treatment of slaughterhouse effluents.
Adopting a combination of biological treatment and AOPs for the treatment of slaughterhouse effluents is seen to be both operationally and economically advantageous. Combined procedures combine the benefits of several technologies to produce high-quality effluents from industrial and high-strength wastewaters for reuse and resource recovery.
A cost-effectiveness analysis is utilized to reduce treatment time and overall treatment costs for the efficient treatment of slaughterhouse effluents.
Conclusion
Unsanitary conditions at certain slaughterhouses cause infections to spread to the final meat product to be ingested. People from Africa, Asia, and South America have reported significant gastrointestinal disorders, bloody diarrhoea, liver malfunctions, and, in some cases, death as a result of the presence of viruses, protozoa, helminthic eggs, and bacteria in SWW.
Moreover, the presence of hepatitis A and E viruses in sewage of animal origin has been documented in Spain. As a result, SWW must be properly treated before discharge into water bodies in order to minimize environmental contamination and adverse impacts on human health.
What can Netsol Water provide?
Netsol Water is a significant water and wastewater treatment firm in India, offering WTP, WWTP, STP, and ETP manufacture, among other services. The company creates equipment’s and is committed to providing practical solutions that help businesses flourish.
Flotation, coagulation, sedimentation, filtration, adsorption, membranes, initial settling, secondary activated sludge, anaerobic digestion, Odour control techniques and even carbon dioxide or methane recovery for further uses are just a few of them. We are committed to providing our valued customers with hands-on service, expert counselling, and training.
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