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Practitioner's Tool / Costs for Sanitation Options - Markets

155 bytes added, 21:08, 22 November 2016
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There are three categories of disinfection that are suitable for market wastewater flows:
*''[[Chlorination_(Chemical_Disinfection)Practitioner's Tool / Chemical Disinfection|Chemical]]:'' Chlorine is a common chemical disinfectant for wastewater effluent. Erosion style chlorinators use the chlorine in solid form as chlorine blocks or tablets. Similar to swimming pool chlorinators, the wastewater effluent flows over the solid chlorine tablets and dissolves or erodes the chlorine, delivering the chemical to the effluent. This is an effective method for small flows. Also popular are liquid chlorinators where chlorine bleach (sodium hypochlorite) is added to water and pumped into the wastewater stream by a small metering pump. These are easy and inexpensive to operate.*''[[UV_Light_Practitioner's Tool / UV Light (Natural_DisinfectionNatural Disinfection)|Radiation]]:'' Ultraviolet light is a strong disinfectant and can kill most bacteria found in wastewater. While initially more expensive than chlorinators, these methods save in the long run as they require much less operation.
*''[[Ozonation_(Physical_Disinfection)|Physical]]:'' Ozone is a highly reactive gas that kills pathogens on contact. Ozone generators are simple devices that produce the gas and then bubble it through the effluent to react with and kill pathogens. Ozonated effluent is especially clear and ideal for use in toilet flushing as the process also helps eliminate odors typically associated with treated wastewater effluent.
=== Conclusion ===
Wastewater treatment systems for public markets are within the means of most local government units as financing models for full cost recovery . For planning purposes, consider the average cost of a treatment system at between 2,700 and 4,100 pesos per stall, where the higher number is for more mechanized systems and the lower number for passive technologies. For sewer line expenses, add an additional 20% to 25%, or double this if pump stations will be required. Remember, a full engineering study with detailed architectural designs is necessary to determine actual costs.
 
 
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