[미국] 앵글리안워터 렛포드 WTW서 수질 향상 위한 질산염 플랜트 신축

ACWA 서비스는 이스트 미들랜드(East Midlands)에 위치한 앵글리안 워터(Anglian Water)의 렛포드(Retford) 수처리 시설에 대한 질산염 제거 플랜트의 설계·시공 계약을 체결했다.

질산염 취약지대 내의 식수수질은 식수시찰단(Drinking Water Inspectorate)의 수질 목표를 달성하기 위해 다른 수자원과 혼합함으로써 처리되어 왔으나, 강과 대수층의 질산염 농도가 지속적으로 증가하면서 많은 물기업들이 수질을 유지하는 데 문제가 되었다.

 

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New nitrate removal plant to improve water quality for Anglian Water’s Retford WTW

 

ACWA Services has been contracted to design and build a nitrate removal plant for Anglian Water’s Retford Water Treatment Works (WTW) in the East Midlands.

 

Drinking water quality in Nitrate Vulnerable Zones (NVZ) has traditionally been achieved by blending water from different sources to achieve Drinking Water Inspectorate (DWI) quality targets.

 

But as nitrate levels in rivers and underground aquifers continue to rise, this has become increasingly problematic for a number of water companies to maintain.

 

ACWA’s solution included design, installation and commissioning for all process, mechanical, electrical and instrumentation works and is based on the company’s Nitreat Ion Exchange process.

 

Once operational this will treat a total works flow of 12,900, m3/day, drawn from Retford’s existing boreholes.

 

Treated water from the process will be blended to meet DWI target nitrate concentrations of less than 50 mg per litre. The ten month project is expected to be completed by the end of 2016.

 

The Nitreat system is a counter current continuous Ion Exchange process for nitrate removal utilising a patented multi-port distribution valve. This distributes the feed and regeneration flows to multiple resin pressure vessels, with process flows including absorption, displacement, brine regeneration and regeneration rinse, all cycled by the distribution valve.

 

This is our 17th Nitreat project for Anglian Water. Other UK utilities using the technology include Cambridge Water, Severn Trent, Thames Water and Yorkshire Water.

 

[출처 = Water World / 2016년 5월 11일]