Effluent concentration, long term

To determine the electrosorption capacity of this ACF, a long-term test was conducted with a 3S0mg/L U(VI) feed at - 0.9V. As shown in Fig. 2, the effluent concentration is rapidly reached at less than Img/L and it corresponds to a specific sorption rate of 662/IB/(g min). The cumulative amount of uranium within ISh is about 5 32mggnniunySaCF ... 

A battery of aquatic biological tests has been developed to evaluate the toxic effects elicited from effluents. For all the types of toxicity tests, selection of exposure concentration and duration, test species and strains, and monitored water quality parameters are critical. The short- and long-term methods for... 

Limestone Long-Term Tests with Two Scrubber Loops and Forced Oxidation. The venturi/spray tower system was modified for two-scrubber-loop operation with forced oxidation as shown in Figure 2. Two tanks were used in the oxidation loop (venturi loop) air was injected to the first of these tanks through a simple 3-inch diameter pipe below the agitator. Adipic acid was dry-fed to the spray tower effluent hold tank. This was accomplished by manually adding one-pound increments hourly to maintain specified concentration, usually totaling only a few pounds per hour. A small screw feeder would serve the purpose in a full-scale plant. 

The ocx umption of sodium hydroxide and sodium orthosilicate in reservoir sand is a long term iencmenon. The number of pore voluones required for the concentration of effluent alkaline solution to reach the concentration of the injected solution ranges from 10 to 33 pore volume (or 30 to 99 days). On reducing the flow rate from 1/3 pore volumes per day to 1/10 pore volume per day after the effluent appeared to have reached the concentration level of the injected solution the concentration level of the effluent dropped to a lower valuer indicating the... 

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