국가지하수정보센터
빅데이터플랫폼기술동향
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[기술동향] [Xylem] 새로운 폐수 처리 기술 공개
물 기술 회사인 Xylem이 오존 처리 방식과 생물활성 여과 시스템을 결합한 새로운 폐수 처리 기술을 발표했다. 이 기술은 제약 물질과 호르몬 합성 물질을 포함하는 처리하기 어려운 오염원을 제거하는데 효과를 보였다.
Xylem은 개인 미용 및 위생 용품, 의약용 활성 성분, 호르몬 방해 합성물 같은 오염물질을 저렴한 비용으로 효과적으로 제거할 수 있다고 밝혔다. 신기술의 다양한 장애물 제거는 산업 사용, 지하수 충전, 농업과 마실 수 있는 물 재사용을 포함하는 전체적인 물 재사용을 가능하게 하며 여과 시스템에서 오존을 사용하여 미생물의 소화를 통해 유기 오염물을 산화시킨다.
강화된 오존과 생물 활성 여과는 운영이 간단하고 보다 비용 효율적이며 다른 처리에서 요구되는 폐기물질을 생산하지 않기 때문에 역삼투압 기반의 시스템보다 자본비용이 적게 든다. 또한, 민감한 수생태로 물을 방출하는데 적합하며 강화된 새로운 규제를 충족시킨다.
[원문내용]
Ozone-boosted wastewater treatment clears tough pollutants
Water technology company, Xylem, has launched wastewater treatment technology that combines ozone-treatment and a biologically active filtration system. The company claims it removes currently difficult-to-treat pollutants including pharmaceuticals and hormonally active compounds.
Xylem\'s Leopold Oxelia optimises wastewater treatment for discharge into sensitive waters and direct potable reuse according to the Switzerland-based company. Xylem claims pollutants like personal care products, active pharmaceuticals and hormone disrupting compounds can be removed cost effectively from a water stream using Xylem\'s Leopold Oxelia.
The company says this multi-barrier removal opens up more options for water reuse, including industrial use, groundwater recharge, agriculture and even direct potable reuse. The system uses ozone to oxidise organic pollutants to be digested by microorganisms in the filtration system. "Unlike other treatment systems, the compounds are not just concentrated in another waste stream - they are destroyed," said product manager with Xylem Anton Callery.
Xylem claims the new system makes effluent suitable for direct discharge into the most sensitive aquatic ecosystems.
It claims also that ozone-enhanced, biologically active filtration has lower capital costs than reverse osmosis-based systems and, because the ozone technology do not produce another waste stream requiring further treatment, operations are simpler and more cost efficient.
Tightened regulations, such as Switzerland\'s, recently imposed requirement through federal water protection laws of treatment of "contaminants of emerging concern" require advanced systems to reduce trace organics. Xylem says its latest product "can be used to upgrade existing wastewater treatment plants to meet new regulations."
It says Leopold Oxelia is suitable for municipal wastewater tertiary applications of more than 5 Ml/d.
[출처 = Desalination & Water Reuse / 2014년 8월 19일] -
[기술동향] [뉴저지] 독성물질 폐기지역(Superfund site) 매립지를 덮는 계획 종결
뉴저지 주의 행정구역들인 Cinnaminson와 Delran에 있으며 Cinnaminson 지하수 오염 독성물질 폐기지역에 속한 폐쇄된 2개의 매립지를 덮기 위해 추가 초치가 필요 없다고 환경보호청(EPA)이 결정했다.이미 취한 조치들이 유효하므로 이 매립지들을 덮기 위해 추가 조치가 필요 없다는 것이다. 환경보호청은 이 지역들의 상태를 검토했는데, 이 매립지들로부터 지하수로 유출되는 오염물들로 인한 위험이 잘 처리되었다는 결론을 내렸다. 지난 26년간 지하수를 감시한 결과, 이전에 이 매립지들을 덮었던 공사가 여전히 효과를 나타내고 있음이 확인됐다.[원문내용]Plan addressing capping of landfills at NJ Superfund site concludedThe Environmental Protection Agency (EPA) has determined that no further action is needed to address the capping of two closed landfills at the Cinnaminson Groundwater Contamination Superfund site in the townships of Cinnaminson and Delran, N.J.No further actions with respect to the capping of the landfills are needed because the actions already taken are effective. The EPA reviewed conditions at the site and has determined that the threat of further release of contaminants from the landfills to the groundwater has been addressed. Groundwater monitoring conducted over the past 26 years confirms the effectiveness of the previous capping of the landfills.
The site, which covers approximately 400 acres, includes residential and industrial properties and the two landfills. As a result of historic operations throughout the site, the groundwater and soil were contaminated with volatile organic compounds and heavy metals, which can have serious health effects. The EPA will require that the groundwater associated with the landfills continues to be monitored and treated, if necessary.
To date, the landfills have been covered with protective caps to prevent water from flowing through them, and a system has been constructed to collect gas generated from the landfills. In addition, contaminated groundwater in the area had been pumped and then treated to prevent contaminants from spreading. An assessment regarding the continued operation of the groundwater extraction and treatment system is ongoing. The local drinking water supply is monitored regularly to ensure that water meets drinking water standards and is safe to consume, which it currently is.
The landfill property on the site was originally a sand and gravel mining operation. Later, solid waste including hazardous substances were dumped in the mining pits. Sanitary Landfill, Inc. operated the landfills from 1970 until they closed in the 1980s. The site was first addressed by the New Jersey Department of Environmental Protection, with the EPA taking over when the site was added to the federal Superfund list in 1986.
The EPA\''s remediation of the site has been conducted in phases to facilitate the long-term restoration of the area. In 1987, Sanitary Landfill covered the landfills with a clay cap to keep water from mixing with the contaminants and spreading the groundwater contamination. A landfill gas management system to collect and control landfill gas was expanded in 1996.
In the first phase of the EPA cleanup in 2000, SC Holdings, Inc., successor to Sanitary Landfill, constructed a groundwater extraction and treatment system to clean the polluted groundwater and installed wells to measure and monitor groundwater contamination. The groundwater monitoring for volatile organic compounds and metals is ongoing and performed twice a year.
In the second phase of the project, announced on Wednesday, Aug. 6, SC Holdings will continue to monitor the groundwater and the landfill caps to ensure that people\''s health and the environment are protected. The landfill caps are working well, and the EPA will continue to monitor the site and can require more actions if site conditions should change. The EPA is currently assessing the need for continued operation of the groundwater extraction and treatment system.[출처 = WaterWorld / 2014년 8월 12일] -
[기술동향] [도쿄전력] 후쿠시마 원전 오염수 해양배출 추진
일본 후쿠시마 원전을 운영하는 도쿄전력은 방사성 물질에 오염된 지하수를 바다에 배출하는 방안을 추진 중이라고 밝혔다.
도쿄전력은 12일 방사성 물질로 오염된 후쿠시마 제1원전의 지하수를 일정 수준으로 정화한 후, 바다에 배출하는 배관 설치 계획을 일본 원자력규제위원회에 제출했다. 그러나 정화 작업을 거쳐도 방사성 물질인 트리튬을 완전히 제거할 수 없어, 저농도의 방사성 물질이 바다에 방출된다.
이에 대해 도쿄전력은 오염수 저장 방식으로는 탱크 용량에 한계가 있다는 입장이다. 도쿄전력은 시험적으로 지하수 정화 작업에 나서며, 정화된 지하수에서 방사성 물질 농도가 얼마나 낮아지는지 확인할 예정이다.
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[기술동향] [호주] CH2M HILL, 대규모 지하수 보충 플랜트 수주
웨스턴 오스트레일리아의 수자원 공사가 퍼스에 건설될 대규모 물 보충 플랜트(AWRP)의 설계·건설을 위해 CH2M HILL과 계약을 체결했다고 밝혔다. 이 플랜트는 호주의 첫 폐수 재활용 프로젝트이며 기후회복을 위한 수자원 공사의 전략적인 과정의 일환이다.
플랜트의 초기 단계의 건설은 다음달에 시작될 예정이며 플랜트는 고품질로 처리된 폐수를 퍼스의 지하수 대수층에 주입한다. 또한, 초기에 140억 리터의 수용량을 갖고 점차 280억 리터로 확장할 계획이다.
한편, 수자원공사는 기술적·사회적 시행할 수 있는 지하수 보충방법을 위한 지속가능한 물을 생산을 위해 폐수 재활용에 대해 2010~2012년 복잡한 지하수 보충 시험(GRT)를 실시해 왔다.[원문내용]
Western Australia to receive first full-scale groundwater replenishment plant
Western Australia\'s Water Corporation has awarded CH2M HILL, as part of a joint venture with Thiess, a contract to design, construct and commission a full-scale advanced water replenishment plant (AWRP) in the city of Perth. The plant is the first wastewater recycling project of its kind in Australia and is a major step in progressing the Water Corporation\'s strategy for climate resiliency.
Construction on the first stage of the plant will begin later this month. The plant, which will inject highly-treated wastewater into Perth\'s underground aquifers, will have an initial capacity of 14 billion liters -- double the project\'s original capacity, with an option to expand to 28 billion liters in the future.
"With Australia\'s dry climate, groundwater replenishment provides a secure, rainfall-independent water source and will be an integral part of northern Perth\'s future water security," said Chris Morris, CH2M HILL Australia and New Zealand geography manager.
The Water Corporation undertook a complex groundwater replenishment trial (GRT) from 2010 to 2012 at the Beenyup wastewater treatment plant site to assess the technical and social feasibility of constructing such an advanced wastewater recycling plant for producing water that is suitable for replenishing groundwater.
The trial -- which involved treating approximately 3.5 billion liters of treated effluent from Beenyup using ultrafiltration, reverse osmosis (RO) and ultraviolet (UV) disinfection, as well as storing the water in an underground aquifer where it can be further filtered by natural processes -- was successful.
The new AWRP will be built on the same site as the trial, in Craigie. Construction of the project is expected to be in commission by October 2016. When commissioned, the plant will help Perth meet its future drinking water needs through 2060. For more information, visit http://www.watercorporation.com.au/gwr.
[출처 = Water World / 2014년 8월 8일]
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[기술동향] [미국] 지질연구소, NM 공국기지에 감시우물 건설
미국 지질연구소 과학자들이 지하수 오염에 대한 초기경보를 제공하기 위해 뉴멕시코 도시 인근 Trumbull 마을의 세 곳에 감시우물을 건설할 예정이라고 밝혔다.
감시 우물은 지하수 모니터링 우물로써 지하수 오염 장소와 식수 제공 우물사이에 위치한다. 감시우물의 목적은 지하수 오염이 식수 제공 우물에 미치는 영향을 모니터링하고 강화된 경보를 제공하는 것이다.
[원문내용]
USGS to start drilling \'sentinel\' wells near NM Air Force base
Starting today, scientists from the U.S. Geological Survey (USGS) will be drilling "sentinel" wells at the first of three locations in the Trumbull Village neighborhood in the city of Albuquerque, N.M., to provide early alerts for groundwater contamination.
These new sentinel wells will provide early warning if there is a northeastward movement of the Kirtland Air Force Base Bulk Fuels Facility plume and would provide Albuquerque Bernalillo County Water Utility Authority (ABCWUA) and Air Force officials lead time to implement plans to protect nearby groundwater drinking water supply wells.
A sentinel well is a groundwater-monitoring well located between a known area of groundwater contamination and drinking-water supply wells. The purpose of a sentinel well is to provide advanced warning of movement of groundwater contamination towards the drinking water supply wells.
During March and April 2013, the USGS drilled a similar sentinel well, funded by the ABCWUA, near the corner of Trumbull Avenue SE and Mesilla Street SE. This year, the organization will be drilling at three locations in the Trumbull Village neighborhood: On the north side of the Cesar Chavez Community Center; near the eastern end of Phil Chacon Park; and in the parking lot at Trumbull Park. This work is being funded by the Air Force.
"USGS scientists will be drilling for approximately 12 hours a day; from about 7 a.m. to about 7 p.m. We expect to be done with the drilling in late December 2014 or early January, 2015," said Nathan Myers, USGS scientist in charge of the project. "Although the drinking water supply wells are not in imminent danger of being contaminated, the sentinel wells are being installed as a precautionary measure to provide early warning if the plume does move towards drinking water supply wells."
The equipment includes a drill rig, two large trailers, a water truck, and smaller vehicles. At each drill site, the drilling equipment and supplies will temporarily occupy a space that is 60 to 100 feet wide and 120 to 150 feet long. After the drilling is complete, wells at each site will be enclosed below ground in locked steel vaults.
[출처 = Water World / 2014년 8월 7일]
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