In a BOD test, the amount of organic matter remaining in the wastewater was measured at certain time intervals, instead of measuring the dissolved oxygen content. The amount of organic matter remaining after 4 and 9 d was measured as 52.86 mg/L and 8.11 mg/L, respectively. Calculate the ultimate BOD and BOD rate constant k for the wastewater.

Q: After three days, the BOD concentration in a water sample was determined to be 75 mg/lt with a…

A: BOD after 3 days,L3 = 75 mg/lt Reaction rate constant, k = 0.345per day

Q: The BODs of a domestic wastewater sample is considered to be about 200 mg/l and the DO in it is…

A:

Biological Processes

Biological solid waste includes bacterial and contaminated waste produced by living individuals. Its treatment is essential to prevent the spread of any air-borne or water-borne diseases or diseases transmitted from one organism to another in a food chain. There are many benefits of the biological solid waste treatment and some of them are: the minimized quantity of waste substance, waste control, eradicating any disease-causing pathogens, generation of biogas, composting, anaerobic digestion, bio drying, mechanical biological treatment, microbial fuel cell, phytoremediation, and biofiltration. The final products of the biological solid waste treatment may be recycled to obtain organic fertilizers or disposed of in SWDS (Solid Waste Disposal Site) after proper treatment.