About Septic Tanks

There are many wastewater filtration equipment options.

There are many wastewater filtration equipment options are available to communities who wish to employ centralized wastewater treatment. Community-specific characteristics, such as land cost, availability, wastewater characteristics and flow rates, as well as desired treated wastewater effluent concentration, and solids disposal costs will affect whether a particular community can utilize a wastewater treatment facility effectively.

For the hypothetical fringe and rural communities, different treatment trains are valued based on their expected community characteristics. Due to their small wastewater flow and the relatively large amount of land available, the treatment train cost for rural community may included: a facultative oxidation pond, which requires a large amount of land but is economical and relatively maintenance free, and a chlorination/dechlorination disinfect ion unit.

For the fringe community, the treatment train consists of a grit chamber, comminutor, sequencing batch reactor, and chlorination/dechlorination disinfect ion unit. The SBR was selected for the fringe community because it is capable of handling small wastewater flows, and requires a small amount of land, which may not be readily available in a fringe area.

If removal of additional nitrogen is required for the wastewater filtration, the facultative oxidation pond in the rural community is then replaced with a SBR.
This provides nitrification and denitrification. The SBR in the fringe community is modified to provide such a treatment. Waste solids from the SBR unit are valued
for disposal of wastes via land application.

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