Sources of Industrial Wastes

Assessment report of 1 selected options y previous option  

FEASIBILITY AN Technical evalu Economic evatu Select options fc ALYSIS PHASE ttion ation r implementation  

IMPLEMENTATION Justify projects and obtain funding Installation (equipment) Implementation (procedure) Evaluate performance Repeat the procee  

Once management has made a commitment to the program and goals have been set, a program task force is established. The selection of a team leader will be dependent upon many factors including the ability to effectively interface with both the assessment team and management staff. 

The task force must be capable of identifying pollution reduction alternatives as well as be cognizant of inherent obstacles to the 

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Sources of Industrial Wastes Knowledge of the sources and types of sohd wastes, along with data on the composition and rates of generation, is basic to the design and operation of the functional elements associated with the management of sohd wastes. 

Fig. 1.7 Reconstructed ion chromatography of industrial waste sample Source Own files...

Phenolic wastes are one of the most prevalent forms of chemical pollutants in industry today. The major sources of phenolic waste are insulation fiberglass manufacturing, petroleum refineries, textile mills, steel making, plywood, hardboard production, manufacture of organic chemicals, paint stripping, and wood preservatives. Eisenhauer (1964) first studied oxidation of phenolic wastes with Fenton s reagent. It has been demonstrated that the oxidation of phenol involves the intermediate formation of catechol and hydroquinone (Merz and Waters, 1949 Stein and Weiss, 1951 Wieland and... 

A flow chart of a generic SCWO process is shown in Figure 10.4. It illustrates the feed stream of a typical aqueous waste. Oxidants such as air, oxygen, or hydrogen peroxide must be provided unless the waste itself is an oxidant. A supplemental fuel source should also be available for low-heat-content wastes. The streams entering the SCWO reactor must be heated and pressurized to supercritical conditions. Influent streams are frequently heated by thermal contact with the hot effluent. Both influent pressure and back pressure must be provided. The influent streams are then combined under supercritical conditions where oxidation occurs. Certain properties of supercritical water make it an excellent medium for oxidation. Acetic acid is generally considered one of the most refractory by-products of the SCWO process of industrial waste. 

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