Waste deep shaft

Source Adapted from Daly, P.G. and Shen, C.C., The deep shaft biological treatment process, in Proceedings of the 43rd Purdue Industrial Waste Conference, May 1988. With permission. BOD, biochemical oxygen demand COD, chemical oxygen demand TSS, total suspended solids. 

Deep Shaft process, in biological waste treatment, 25 905 Deep shaft reactor, 15 713, 714 Deep tank aeration, in biological waste treatment, 25 905... 

The deep shaft reactor is a very tall IL airlift reactor that has vertical partitions, and is built underground for the treatment of biological waste water. This reactor is quite different in its construction and performance from the simple IL airlift reactor with a vertical partition. In the deep-shaft reactor, air is injected into the downcomer and carried down with the flowing liquid. A very large liquid depth is required in order to achieve a sufficiently large driving force for liquid circulation. 

A new process configuration, that for deep-shaft wet-air oxidation, is available as a more satisfactory and economical engineering approach to the application of the wet-oxidation concept (see Figure 9.4-10). The deep-shaft wet-air oxidation reactor is unique to its purpose. The tube-diameter and length are designed so that sufficient reaction time and the desired pressure can be attained during fluid-waste oxidation. The pressure is developed naturally by... 

J.M Smith, Deep-Shaft Wet-air Oxidation, Standard Handbook of Hazardous Waste Treatment and Disposal, H.M. Freeman Ed., 8.137, Me Graw Hill (1988). 

Otto Aqua-Tech HCR [High-Capacity Reactor] A high-intensity biological treatment process for purifying effluents from food processing, certain industrial processes, and landfill leachate. The waste is circulated rapidly through a vertical loop reactor, and air is injected at the top. Invented at the Technical University of Clausthal-Zellerfeld developed and commercialized by Otto Oeko-Tech. Eleven plants had been installed in Germany and Italy by 1991. See also Deep Shaft, Biobor HSR. 

Aqueous waste streams with BODs of 5,000 to 20,000, which are essentially nontoxic may be produced by a food processing industry or by a distillery, may be efficiently treated by extended aeration in lagoons, or in deep shaft... 

Production of power from nuclear reactors involves uranium mining, fuel fabrication, the reactor operations, and storage of wastes. All of these processes may expose humans and the environment to radiation. Uranium production in the United States was 12,300 tons of U3O8 in 1977, primarily from western states, Texas, and Florida. Mining from deep shafts or open pits is the preferred method of uranium extraction, although in Florida it is produced as... 

Deep shaft, tower loop, has been used for SCP from n-paraffins and for waste water treatment ... 

Waste material from deep mines derives from the sinking of shafts, roadways, and ventilation tunnels, and extraction of the coal seam. This is then hauled to the surface and dumped locally. Previously, when coal was dug by hand, much of the waste was stored underground in voids. However, the implementation of modern mechanical techniques, particularly with the introduction of coal cutting machines on the coal faces, has dramatically increased the proportion of waste material. 

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