Acquire Basic Understanding About Wastewater Treatment Systems

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Task 1. Acquire basic understanding about wastewater treatment systems. Dr. Choudhury pointed me into the right direction. I conducted my own literature review. Most of the research I studied fell into one of the following categories: • Different groundwater supply systems such as dug wells, driven wells, bored wells, and drilled wells. • There are two different types of pumps. Dynamic pump and the positive displacement. Each of these major pumps has little pumps. The positive displacement pump has the rotary and reciprocating pump. The dynamic pump has the centrifugal and het pump. • The water quality of the water used for consumption must be potable and must meet the minimum standards of qualities. The different aspects of water …show more content…

Waste sludge drawn from these operations is thickened and processed for ultimate disposal, usually either land application or landfilling. Preliminary treatment processes include coarse screening, medium screening, shredding of solids, flow measuring, pumping, grit removal, and pre-aeration. Chlorination of raw wastewater sometimes is used for odor control and to improve settling characteristics of the solids. Primary treatment involves sedimentation, and is the process by which about 30 to 50 percent of the suspended solid materials in raw wastewater are removed. Sedimentation must precede all biological filtration operations. The organic matter that remains after primary treatment is extracted by biological secondary treatment process to meet effluent standards. Secondary treatment commonly is carried out using activated-sludge processes, trickling filters, or rotating biological contactors. Tertiary wastewater treatment is additional treatment that follows primary and secondary treatment processes. It is employed when primary and secondary treatment cannot accomplish all that is required. For example, phosphorus removal may be needed for wastewaters that are discharged to receiving waters that are likely to become eutrophic, or enriched with nutrients.

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