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Oxyozosynthesis is a pressurized ozone–oxygen oxidation flotation process, which involves the use of ozone and oxygen as the oxidation agents for stabilization of wastes in a pressurized reactor to expedite the oxidation process. The wastes can be either a wastewater stream or a sludge stream (biosolids stream). Since the oxidation reactions occur under high pressure, the ozone and oxygen gases are...
In any effort to improve the quality of the wastewaters from a meat-processing plant, the first step must be a complete evaluation of in-plant waste-conservation opportunities. The cost of purchased water, the cost of waste treatment, and possibly the value of recoverable byproducts offer economic incentives for waste conservation. After all feasible steps in waste conservation have been taken, the...
Experimental procedures are developed for simulation and evaluation of various air flotation and associated treatment processes, including mixing, flocculation, sedimentation, dissolved air flotation, induced air flotation, and filtration. These experimental procedures are useful for determination of chemical types, dosages, chemical reaction time, mixing intensity, pH condition, solids concentration,...
The main focus of this chapter is the scientific analysis of flotation for wastewater treatment. The analysis includes a brief description of where and why flotation is used and with what intent. The physical and chemical theories of flotation as they pertain to wastewater flotation, such as characteristic bubble size and its modification, specific contact angles and their control, reactor flow-through...
The steps leading to the demise of a lake are discussed. One of the primary causes of the death of a lake is excessive biological growth, called eutrophication. Biological growth is limited primarily by the availability of the nutrients necessary for growth. It has been shown that phosphorus is most frequently the limiting nutrient to control biological growth in a lake, but nitrogen is also commonly...
Dissolved air flotation (DAF) has been widely used for the pre-treatment or the primary treatment of seafood processing wastes. Screening for removal of large particles (bones, shells, etc.) prior to DAF is recommended. Suspended solids are readily removed in a DAF unit that requires less space than an equivalent standard sedimentation basin. A DAF system can be started and shut down easily to accommodate...
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