Vol. 28 No. 2 (2022)

CV C-Maxi Alloycast is a company engaged in the casting of household appliances and manufacture of precision products made from aluminum. So it is possible in every activity there is a potential danger. The objectives of this study were to identify potential hazards and assess safety and health risks and to evaluate risk control techniques. This research was conducted on 4 divisions ie warehouse division, casting division, technician division and finishing division. Thus, it can reduce the number of work accident. This research refers to AZ / NZS 4360: 2004 standard using descriptive study…

Pollution of organic compounds in rivers is generally contributed by wastewater discharge from human activities e.g. untreated black- & greywater, livestock farming, and industry. Without proper control of this waste generation, the river ecosystem will suffer if just rely on its self-purification and dilution by natural runoff to reduce the downstream effect. This research aimed to treat organic wastewater with an immobilized mixed bacterial culture. Immobilization was carried out using calcium alginate in a form of macrocapsule/beads, allowing the degrader microbe to be entrapped in its…

Air Conditioning (AC) waste water has quite a lot of quantity, but usually AC waste water is directly discharged into the surrounding environment through AC waste water pipes. The objectives of the study were (1) to determine the discharge of AC waste water produced within 30 minutes and (2) to determine the effectiveness of the filter in reducing the pollutant content of AC waste water so that it is good for plant irrigation. The research was conducted by analyzing the quantity and quality of AC waste water in the CC Building, Muhammadiyah University of Jember. Parameters analyzed include…

Hospital wastewater contains various substances that are used for medical, laboratory, research purposes, feces from patients, and also including pharmaceutically active compounds (PhACs). Environmental problems can arise due to the presence of PhAC in water bodies. The active pharmaceutical compounds themselves were originally designed to affect humans and animals physiologically even at low concentrations. These compounds remain in the environment for a long time and are not degraded biologically or naturally. Therefore, to design an WWTP system in hospitals that is able to treat medical…