The 5-day biochemical oxygen demand (BOD5) test has been used for over a century to evaluate the concentration of biodegradable organic matter in wastewater effluents. The BOD test is a simple batch test, but it is also time consuming, labor intensive, imprecise, and, due to the dilution of the wastewater, takes a relatively long time to complete. Advances in laboratory instruments and lab ware...

Vermifilter is a greywater waste treatment by utilizing the symbiosis of earthworms with microbes. more efficient, simple in design, and easy to maintain. The purpose this study was determine effect vermibed material on concentration BOD5, NH3-N, DO using vermifilter. used four vermifilter reactors (VF) filtration media for gravel, coconut fiber, rough sand, vermibed. Reactor VF1 uses mixture m...

Population growth and industrialization have caused serious environmental pollution. Environmental pollution has become global issues beyond a region or a country, and is the introduction of contaminants, which are synthetic chemicals, pesticides, and heavy metals etc, into environmental system. Biopersistent organic chemicals of them particularly cause instability, disorder, harm or discomfort...

The anaerobic treatment of wastewater from the household and personal products industry was studied using a 16.3 L hybrid reactor (UASB and biofilter). The top of the UASB reactor was filled with coconut shells to act as the support material for the biofilter. The wastewater was characterized in terms of pH (1.0 – 12.0), COD (1,000 – 5,000 mg/L), BOD5 (700 – 1,500 mg/L), chloride (55 – 850 mg/L...

This paper refers to a way of proposing the optimal sequence of treatments that should be applied to wastewater by using a hybrid model. It combines cases-based reasoning and artificial neural networks, getting the best of both approaches. Preliminary results demonstrate that it is a feasible model. 1. Domain Description The hydric resources of our country have been affected for the industrial ...