물 연구재단(Water Research Foundation, WRF)이 식수에서 시아노박테리아 및 기타 유독성 조류를 효과적으로 제거하는 기술에 대한 새 연구를 발표했다. 시아노박테리아에 의한 식수자원 오염의 확장은 기후변화, 계속되는 도시화, 점차 증가하는 수원의 영양분 적재 등으로 힘을 얻어 계속해서 퍼지게 된다.

WRF가 진행한 최근 프로젝트인 ‘시아노박테리아 및 독성 조류의 제거에 대한 관습적 처리 최적화’는 시아노박테리아 및 대사산물의 최적화된 제거와 동시에 수질 목표를 충족시키고자 하는 수도 시설에 가이드를 제공한다.

 

 

 

The Water Research Foundation (WRF), a sponsor of research supporting the water community, has released new findings of a study addressing effective removal methods for cyanobacteria and other toxic algae from drinking water. The prevalence of drinking water source contamination caused by cyanobacterial blooms continues to increase -- aided by climate change, continued urbanization and increased nutrient loading of source waters (see "Increasing algal bloom toxicity tied to nutrient enrichment, climate change").

 

This latest project by WRF, "Optimizing Conventional Treatment for Removal of Cyanobacteria and Toxins" (#4315), provides guidance to water utilities on the optimization of conventional treatment for the removal of cyanobacteria and metabolites while meeting other water quality goals. The release of the report follows a February vote by the U.S. House of Representatives Energy and Commerce Committee for a bill directing the Environmental Protection Agency to develop a plan that will assess and manage risks associated with cyanotoxins in public drinking water systems.
 
Anticipating needs that may arise as utilities are faced with more questions around this issue, Project #4315 supplies water quality managers and water treatment plant operators with the knowledge and tools required to confidently apply conventional water treatment processes in the event of source water contamination with cyanobacteria.

 

The experimental work undertaken by the Australian Water Quality Centre, a business unit of the South Australian Water Corporation (SA Water), and the Metropolitan Water District of Southern California (MWDSC), have helped identify key best practices when addressing cyanotoxin cases. These best practices include:

·Understanding at what point chlorination does or does not have beneficial effects on coagulation

·What oxidant alternatives can be used in the treatment process

·The effectiveness of specific coagulants on cell and natural organic material removal

·What role turbidity can play in the treatment process

·The removal rate of specific toxin strains, such as C. raciborskii

 

"This important research will help utilities better manage contamination issues from toxic algal blooms and ensure that their communities continue to receive safe drinking water," said Rob Renner, WRF executive director. "For nearly 50 years, the Water Research Foundation has been firmly committed to not only providing solutions to current water community challenges, but continuing to identify and explore what the community might face over the next 50 years and beyond. Our long and influential history with studying cyanotoxins is a prime example of this commitment in action."

 

In addition to Project #4315, WRF is partnering with the American Water Works Association (AWWA) to develop two cyanotoxin utility action guides to be released later this year. The guides will be designed for use by water utility management and staff to help water systems recognize if cyanotoxins may be an issue for their utility and what initial steps they should take to address the matter.

 

[출처 = Water World / 2015년 2월 17일]