The effectiveness of domestic wastewater treatment technologies in the context of new constraints imposed by lifestyle changes in north american families

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Courtesy of Premier Tech Aqua

Abstract: Family lifestyles have undergone major changes over the last 10 to 20 years. People travels more, eat out more often and. in many families, both parents work outside the home. The growing divorce rate also had an impact 011 home occupancy. The occupancy of a blended family home can also vary from week to week due to shared custody arrangements. Such lifestyle changes all have an impact on the flow of wastewater from individual dwellings. Nowadays, intermittent (stop/start) and peak flows can be observed not only in secondary or seasonal dwellings, but increasingly in main residences. The testing protocols currently being used for technology certification in the U.S., Canada, and Europe include testing under stress conditions, but are not representative of the new constraints imposed by changes in family lifestyles. For example, the NSF (National Sanitation Foundation) protocol established during the 1970's does not provide for any testing during peak/overload conditions, and simulation for the two working parents' condition takes place during only one of the 26 weeks of testing (4%). In an effort to submit wastewater treatment technologies to testing that is more representative of the new constraints imposed by current lifestyles, protocols must evolve in such a way as to ensure that short-term (6- to 12-month) technology evaluations are representative of their long-term performance under actual usage conditions. This paper presents a review of the various existing standards, the performance observed 111 real-life situations, the evolution observed in the last two years 111 Europe and Canada, and the changes needed to protocols so that certified technologies can ensure protection of the environment and water resources under conditions imposed by current lifestyles.

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