Manufacturing activities at Army Ammunition Plants ( A A P s ) result in the pro CDNT and 2, respectively). The studies concluded that removal of explosives from groundwater using continuous flow GAC is feasible.
In five species of teleost from the Swan-Avon river system (Mugil cephalus, Aldrichetta forsteri, Amniataba caudavittatus, Acanthopagrus butcheri and Nematalosa vlaminghi), the concentration of nine different heavy metals in muscle tissue either declined or remained relatively constant with increasing body weight. The data for the biologically important iron, zinc, copper and manganese were almost invariably represented better by a logarithmic rather than a linear regression. The concentration of these four metals generally ceased to change markedly with body size at weights above approximately 50 g. The mean concentrations of all nine heavy metals in those individuals heavier than 50 g were very low in every species and are probably close to the minimum levels found in these fish in unpolluted environments. The concentrations of heavy metals were greater in fish which ingested bottom material than in those which fed on organisms such as polychaetes. molluscs and crustaceans, and on various forms of plant.
The Microbiological Inhibition Testing Procedure was developed to determine the possible adverse effects of specific compounds or waste waters on biological treatment processes. The test procedure consists of monitoring the oxidation rate of a biological seed at various dilutions of the waste water in BOD bottles. The threshold inhibition level of a compound or waste water is defined as the lowest concentration of the compound or waste water which causes a reduction in the biological oxidation rate.
The objective of the activated sludge process, as with other biological treatment processes, is the removal of organic and select inorganic compounds from wastewaters. With ever-increasing treatment requirements, it will become necessary for treatment facilities to be operated more effectively to meet the stringent effluent quality while continuing to treat varying wastewater flows and contaminant loads. Biological systems should be monitored continuously be analytical measurements, visual observations, and operational tests, and proper responses should be made to maximize the performance of the systems to achieve the required effluent quality.
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