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Sanitary & Environmental Science Engineering Definitions

Sanitary engineering is the application of scientific or mathematical principles with to the field of sanitation, especially in regards to its effect on public health. Sanitation is the hygienic means of preventing human contact from the hazards of wastes to promote health. Wastewater is any water that has been adversely affected in quality by anthropogenic influence. It

Definition of various Waste Water flow rates

Qavg is the daily average flow based on yearly data.. Normally, the treatment units are designed on the basis of daily average flow while peak and minimum flows are used to check the capacities of basin and conduits in extreme flow condition. Mass Loading Factor takes care for the fluctuation in wastewater flows and the respective characteristics loading parameters.

Reactors of Waste Water Treatment

Units are the vessels or basin that holds wastewater for the treatment by chemical or biological processes. They can be of any shape. Depending upon the flow and operating conditions and the methods of mixing of the wastewater therein, the reactors have the following main types; Continuous-Flow Stirred Tank Reactor (CFSTR) or Completely-Mix Reactor:

Quality of Sewage - Chemical, Physical and Biological Characteristics

The physical characteristics of wastewater include those items that can be detected using the physical senses. They are temperature, color, odor, and solids. Sewage contains both organic and inorganic chemicals in addition to various gases like H2S, CO2, CH4, and NH3 etc that are formed due to the decomposition of sewage. The chemical characteristics of wastewater of

Design procedure for sanitary sewers

Calculate the average wastewater flow, Qavg = (70-80) % of average water consumption. Select a peak factor, PF = [(18+√P)/(4+√P)], where P = population in thousands. Calculate the peak wastewater flow, Qpeak = (PF * Qavg)

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