热门搜索:
污水再生利用 污水回用 再生水
  • 网站首页
  • 再生水动态
    • 再生水国内动态
    • 再生水国际动态
  • 再生水知识
    • 再生水基本知识
    • 再生水安全知识
    • 水资源与水安全
    • 再生水杂谈
  • 城镇水回用
    • 农、林、牧、渔业利用
    • 市政利用
    • 环境利用
    • 水源补给
    • 黑臭水体治理与再生水利用
    • 工业利用
    • 工程案例
  • 工业水回用
    • 造纸废水回用
    • 印染废水回用
    • 冷却与锅炉废水回用
    • 其他工业废水回用
    • 工程案例
  • 技术资料
    • 技术论文
    • 图书推荐
    • 病原微生物及其评价方法
    • 化学污染物及其评价方法
    • 再生水深度处理工艺
    • 再生水消毒工艺
    • 再生水输送与存储系统
    • 再生水利用及其风险评价
  • 政策法规
    • 技术标准和水质标准
    • 国内政策法规
    • 国际标准政策法规
  • 学术交流
    • 新观点
    • 学术会议
    • 新书抢先看
    • 第四届环境安全高端论坛
    • 2011再生水安全利用会议
    • 2010再生水安全利用会议
    • 2009再生水安全利用会议
  • English
再生水动态 > 再生水国际动态
栏目热门文章
  • 国际水协会2013年再生水相关会议(IWA events 2013)
  • 美国德州持续干旱 河流水位下降Time Lapse Image of Lake Arrowhead Shows Impact of
  • Recycled drinking water a must?
  • 美国再生水研究基金会发布再生水直接回用为饮用水项目公众沟通范本 WateReuse release
  • Dublin water agency drops logo for one with big drop
  • Nominations open for 2014 Water Awards
技术资料
  • 1水质研究方法介绍
  • 2正式发行!《中国城镇污水处理与再生利用发展报告 (1978-2020)》
  • 3水质研究方法第14章
  • 4水质研究方法第13章
您的位置:首页>>再生水动态 > 再生水国际动态
在孟买国际机场的废水再生回用研究 Wastewater Recycling Projects at Mumbai International Airport
发表时间:2016-03-14 10:57:05  编辑:管理员  来源:world online  访问量统计:179

As a part of a massive expansion plan for Chhatrapati Shivaji International Airport located in Mumbai, India, a wastewater recycle project was contracted in 2011 to cater to the growing requirements of the expanded airport.

Due to increasingly strict environmental regulations, the treatment of raw sewage wastewater is required before it is allowed to flow into the natural ecological system. As the airport has a lack of fresh water availability for its needs, it now recycles and reuses the treated sewage water for its operations, such as toilet flushing, horticulture, and HVAC cooling makeup water.

One unique and challenging aspect of the wastewater recycle plant project was that the plant must cover a very limited footprint in order to accommodate all needed components of the airport expansion project. The plant successfully met this small footprint requirement due to innovative engineering designs. QUA’s Q-SEP modules successfully fit the plant’s requirements due to their large surface area and high operating efficiency. The ultrafiltration system follows a Sequencing Batch Reactor (SBR) process and precedes a reverse osmosis treatment system for tertiary treatment. The feed and treated water quality analysis is shown below.

Location: Mumbai International Airport, Mumbai, India
Product: Q-SEP 6008
Capacity: 3 x 440 gpm (3 x 100 m³/hr)
UF Product Water: Turbidity < 0.04 NTU, SDI < 3
Application: Sewage Wastewater Recycle

Feed Water Quality
pH 6.7 – 8.1
Turbidity (NTU) Variable Up To 12
TDS (mg/l) 700
BOD (mg/l) < 20
COD (mg/l) < 60
Temp Design Max 250
UF Treated Water Quality
Flow Rate (3 Total Trains) 1320 gpm (300 m³/hr)
Turbidity (NTU) < 0.04
SDI15 <3

Process Flow Diagram

UF Solution

MIAL evaluated both UF and conventional media filtration for pretreatment to their RO system. Since the water feeding the pretreatment system was sewage wastewater, the pretreatment step needed to be designed to handle variable water qualities and extremely high turbidity levels. This required careful consideration and planning to assure the right equipment was selected.

The primary goal of the RO pretreatment system was to reduce the silt density index (SDI) and turbidity of the water feeding the RO to a point where RO cleaning would be minimized. Media filtration was unable to meet this requirement so MIAL focused their evaluation of several UF membrane suppliers.

Ultrafiltration was selected as the pretreatment of choice to the RO plant. QUA’s Q-SEP was specifically chosen as the ultrafiltration solution for the MIAL project due to its high water quality output compared to other UF membrane suppliers. The ultrafiltration system consists of three trains operating at a flow rate of 440 gpm each and with a backwash flux of 200 l/m2/hr. The chemical enhanced backwash (CEB) is designed to use sodium hypochlorite, sodium hydroxide and hydrochloric acid. The backwash and CEB system is common for all the UF streams.

Figure 1: Transmembrane Pressure (TMP) Averages Over Six Month Period

System Performance

Since its installation, the Q-SEP system at Mumbai International Airport has been running successfully and providing low turbidity water to the RO unit and meeting the requirement of the airport’s needs. The UF transmembrane pressure (TMP) has been below 0.4 bar (5.8 psi) on average; and Figure 1 shows a sample of the data over a six-month period. The average product water turbidity has been consistently very low (less than 0.04 NTU as per the instrument reading) (shown in Figure 2) and SDI has been less than 3, which meets the RO membrane inlet requirement.

The Q-SEP membrane cleaning is done by regular backwashes and CEBs. CIP has not been required since startup of the UF membranes and the RO membranes are cleaned every 3-4 months. RO cleaning is done as part of the plant operational protocoland not due to fouling of the membrane (as shown by the low TMP values). This is an improvement compared to the average CIP every 1-3 months for RO membranes following standard ultrafiltration membranes using treated sewage waste water as feed.

Due to its key membrane characteristics, QUA’s Q-SEP UF membrane system has increased reliability and quality for the MIAL wastewater recycle system. The Q-SEP UF system has successfully handled variably turbid water and exceeded the MIAL project expectations.

Figure 2: Turbidity Average Data over Six-Month Period

关键词:再生利用;孟买机场;O-SEP模块;超滤;SBR;反渗透

原文链接:http://www.wateronline.com/doc/mumbai-international-airport-case-study-0001


支持单位

清华大学环境学院 中国环境科学学会水处理与回用专业委员会

友情链接

中国环境科学学会 中国环境保护产业协会 搜狐-绿色频道 环境商会 水环境信息公开和公众参与网 水环境联合会 美国再生水协会 澳大利亚循环水 新加坡公共事业局 美国水道协会 天津中水有限公司 谷腾环保网 中华人民共和国住房和城乡建设部 中华人民共和国环境保护部 中华人民共和国水利部 Water Reuse Europe 京ICP备12006143号-1 京公网安备11010802017536号
诚征稿件| 版权声明| 主办单位| 网站宗旨| 联系我们

版权所有:中国再生水网 技术支持:北京古兰科技有限公司

京ICP备12006143号-1 京公网安备11010802017536号