AGRU America Water & Waste Water Solutions by AGRU - Page 20

Wastewater Collection Systems
One of the biggest sources of inefficiencies in wastewater collection is having to treat clean water that gets mixed into the system . Commonly referred to as wastewater infiltration , the problem stems from water entering wastewater collection systems via manholes , pumping stations , wet wells , and lift stations . These access points used to service or support the wastewater collection system , also presents opportunities for groundwater or rain to enter the system .
The problem is significant . AGRU estimates a municipality with 1,000 access point and an average infiltration leakage rate of 10 gallons per minute , per structure , will spend about $ 4.4 million a year in to treat water infiltration . Solving this problem requires rethinking access point architecture and implementing tested products in innovative new ways .
Concrete Protection Concrete protection is necessary to help prevent inflow and infiltration as well as concrete corrosion . Due to high backpressure in some systems , spray-on concrete protection tend to lose their effectiveness over time . In its place , concrete protective liners ( CPL ) can offer a more long-term solution . For areas that experience significant backpressure — which significantly reduces the service life of spray-on coatings — Ultra-Grip offers an even stronger anchor to the underlying concrete .
See page 14 for more information about Ultra-Grip .
Exposed Structures Structures like lift stations and manholes are typically made with concrete . Over time , these structures can experience wear and tear due to water infiltration and MIC . Replacing these concrete structures with high-density polyethylene pipes and fittings offers a watertight solution thanks to the weldability of these products . Large diameter HDPE pipes can be used in place of exposed concrete structures .
Citations 1. “Water Facts.” United Nations. Accessed online 17 October 2019. 2.  “Advanced Guidelines for Preparing Water Conservation Plans.” EPA. documents/part-5-advanced-guidelines.pdf. 3. “Drinking Water Infrastructure Report Card.” ASCE. (2017). Drinking-Water-Final.pdf. 4. “Leakage Management and Control - A Best Practice Training Manual.” WHO. Accessed online 17 October 2019. https://www. 5. M. Najafi, A. Habibian, and V. F. Sever, “Durability and Reliability of Large Diameter HDPE Pipe for Water Main Applications.” Water Research Foundation. (2015). Accessed online 17 October 2019. pdf. Requires login. 6. “2.1 billion people lack safe drinking water at home, more than twice as many lack safe sanitation.” WHO. news-room/detail/12-07-2017-2-1-billion-people-lack-safe-drinking-water-at-home-more-than-twice-as-many-lack-safe-sanitation. 7. “State of the Water Industry.” AWWA. Accessed online 11 November 2019. Utility-Managers/State-of-the-Water-Industry. 8. “Center for Sustainable Systems, University of Michigan. 2019. “U.S. Wastewater Treatment Factsheet.” Pub. No. CSS04-14. http:// The Plastics Experts. 20 21