A quantitative determination was made every 2 months for a year of the microflora of beef cattle waste and runoff at a medium-sized midwestern feedlot. Counts were obtained for selected groups of organisms in waste taken from paved areas of pens cleaned daily and, therefore, reflect the flora of raw waste. Overall, in terms of viable count per gram dry weight, the feedlot waste contained 10 tot...

Small communities in the primeval societies used to bury solid waste just outside their settlement, discharge aqueous waste into the local water bodies and release gaseous pollutants into the atmosphere. The increase in community size necessitated a more organised form of waste management to minimize the environmental impacts as the quantity of pollutants exceeded the system’s threshold. The st...

In this paper a parametric study was undertaken to quantify the sensitivity Abstract to a wide range of coastal detention pond systems dealing with tidal influence to store surface flood water so as to produce general guidance on the importance of the catchment and pond variables. In this process a specified pond design return period was selected for which the system was to be designed. The pon...

and ROWE, ]. A. 1960. Sewage lagoons and mosquito problems. Proc. Symposium on Waste Stabilization Lagoons. U.S. Public Health Service, Kansas City, Mo. p. 101. EADS, R. B., and MENGIES, G. C. 1956. Texas mosquito problems from a species standpoint. Mosq. News i6(3):i87. MVKI.KBUST, R. ]., and HARMSTON, F. C. 1962. Mosquito production in stabilization ponds. Water [•’ollut. ConL Fed. ). 34(3):3...

The globally growing demand of cement results in towering collection of kiln dust from cement plants. The disposal of this fine dust is very difficult and poses an environmental threat. To overcome this problem, research is being carried out in different parts of the world to find out economical and efficient ways and means of using cement kiln dust (CKD) in various applications like soil stabi...

A relevant and current aspect of wastewater treatment systems is related to the processes nitrogen cycle that results in its elimination gaseous forms. In present study, we report first measurements nitrate-reducing rate (NRR) at lab-scale, using flow-through reactor technique with sludge a sewage stabilization pond system located Patagonia (Argentina). Sludge was collected from Inlet Outlet ar...

A preliminary survey of an arsenic contaminated site from an abandoned copper smelting facility and feasibility study of using solidification/stabilization (S/S) process to treat the contaminant waste were undertaken. It was found that the waste, located in the three-flue gas discharge tunnels, contained 2-40% arsenic. The pH of the contaminated waste is extremely low (ranging from 1.8 to 3.6)....

Carbon dioxide production during composting of agro-waste can be taken as the indicator of rate, progress and termination of compost phenomenon and stabilization of organic matter, leading to a balanced compromise between complexity of mathematical model and extensive experimentation. Modeling and simulation of composting of agro-wastes based on experimentally measured carbon dioxide production...

During biogas production, the rate-determining step for the conversion of complex organic matter is the hydrolysis. Different pretreatment methods aid in facilitating the anaerobic digestion by increasing the rate of organic matter hydrolysis. This in effect results in enhanced production of biogas and aids in waste stabilization as well as disposal. This review gives an overview of the methods...