AGRU America Water & Waste Water Solutions by AGRU - Page 11

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 .
11