IronHouse Sanitary District 2018 Outstanding Capital Project скачать в хорошем качестве

IronHouse Sanitary District 2018 Outstanding Capital Project

Aluminum Sulfate Storage and Feed Station In the winter of 2016/17, the District’s collection system and Water Recycling Facility (WRF) received a significant increase in storm flows and illegal surface water flows from surface drainage. These increased flows resulted in the need for aluminum sulfate (alum) addition to increase ultraviolet light (UV) transmittance and reduce suspended solids. From October 2016 to March 2017, the District spent $122,700 on alum. The current alum feed system has inadequate secondary containment and relies on chemical storage totes. The District was forced to purchase alum at a premium price due to inadequate on-site chemical storage facilities. The District contracted with an engineering firm to design a permanent alum storage and feed facility for the WRF. The design was expected to be complete by December 2017. A temporary solution was implemented to take advantage of bulk chemical deliveries until the final design was constructed.