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CHAPTER 6 WASTEWATER TREATMENT PROCESSES

TM 5 - 8 1 4 - 8. CHAPTER 6. WASTEWATER TREATMENT PROCESSES . 6-1. Preliminary and Primary Waste- further classified as manually or mechanically water TREATMENT PROCESSES cleaned. Coarse screens are used in preliminary TREATMENT , while fine screens are used in lieu of a. Introduction. Preliminary TREATMENT of sedimentation preceding secondary TREATMENT or WASTEWATER generally includes those PROCESSES as a step in advanced WASTEWATER TREATMENT . Fine that remove debris and coarse biodegradable screens as a preliminary or primary TREATMENT are material from the waste stream and/or stabilize more applicable to process or industrial wastes.

removal of all particles of about 0.011 inch or larger (65 mesh). For some sludge handling pro-cesses, it may be necessary to remove, as a minimum, grit of 0.007 inch or larger (100 mesh). Grit removal, compared to other unit treatment processes, is quite economical and employed to achieve the following results:

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