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ijetjournal.org

Publish your paper fast with IJET – a peer-reviewed journal with 8.301 impact factor. Fast-track publication, free DOI, global indexing, and UGC approved.

gjesm.net

BACKGROUND AND OBJECTIVES: The increasing need for efficient wastewater treatment solutions has driven research toward the development of integrated processes capable of addressing complex contaminant compositions. Standard single-stage treatment approaches frequently do not effectively remove a variety of pollutants, including organic compounds, heavy metals, and pathogenic microorganisms. Furthermore, information on the integration of coagulation-flocculation, biofiltration, and advanced oxidation processes within a cohesive treatment system. This study aimed to develop and evaluate a multi-stage wastewater treatment system that combines coagulation-flocculation, biofiltration, and advanced oxidation processes to enhance pollutant removal efficiency and improve effluent quality.METHODS: The experimental setup consisted of three sequential treatment units. In the first stage, coagulation-flocculation was employed to aggregate and remove suspended solids and colloidal matter. Coagulant dosages of 20, 40, 60, and 100 milligrams per liter were tested to determine the optimal chemical requirement. The second phase employed biofiltration to enhance the biological breakdown of dissolved organic substances, with the hydraulic retention time fine-tuned for optimal microbial activity. The final stage applied ultraviolet light and hydrogen peroxide oxidation to degrade residual organic pollutants and ensure microbial disinfection. FINDINGS: As the dosage of coagulant was raised, the coagulation-flocculation performance showed improvement. At 20 milligrams per liter, total suspended solids removal was 52.3 percent and chemical oxygen demand reduction was 15.7 percent. At 40 milligrams per liter, these values increased to 72.8 percent and 28.4 percent, respectively. The optimal dosage of 60 milligrams per liter achieved 88.5 percent removal of total suspended solids and 39.6 percent reduction in chemical oxygen demand, while at 100 milligrams per liter, the efficiency reached

lupinepublishers.com

lupine publishers is is an online publishing house, which has multidisciplinary, scholarly open access journals promoting scientific research via its peer reviewed articles and by archiving highly standard articles in respective journals.

ijobas.pelnus.ac.id

international journal of basic and applied science

enggjournals.com

engg journals publications, international journal on computer sciences and engineering

jelsciences.com

Acceleration of worldwide infection with mutant of coronavirus SARS CoV-19 require new paradigmatic of human activity based on negative feed-back system following basic mechanism of Homeostasis of all living organisms and ecosystems. Condition of efficient primary prevention is better integration of cooperation of interdisciplinary teams of experts, knowledge-based society and decision-makers on local scale with working global network focused on common action for efficient protection against contamination of the Human environment with mutagens for reduction risk of incidence new mutants [Ex: Coronaviruses and new pandemics]. Key factor for primary prevention is reduction at the sources emission of immune suppressors, carcinogens and teratogens. Efficient prevention is depended on without delay worldwide introduction of complementary good practice in innovative environmental biotechnology integrated with ecological engineering and circular bioeconomy-driven sustainable development adopted to different kind of regions. Let us recommend heuristic approach, better financial support of transdisciplinary innovative basic and research-developing studies, improvement application of new IT tools for speed dissemination of scientific and technical progress, elimination of bureaucratic barriers and progress in distance problem-solving training and lifelong learning focused on sustainable, knowledge-based society selecting decision-makers with proper imagination and responsibility. Introduction on wider scale innovative biotechnologies [Ex: Recommended by our team modern environmental ecological engineering integrated with renewable sources of energy, laser biotechnology for better adaptation to climate change, aquaculture, apiculture etc.] focused on better prevention against contamination of the air, water and food; would be beneficial for environmental health. It would be also useful for creation in the near future many green jobs all over the world and for reduction risk of