devonshire bermuda

EDR Replacement with Brackish Water Reverse Osmosis Plant in Devonshire, Bermuda



An 80 year old private water utility located in Devonshire, Bermuda set out to upgrade its equipment and infrastructure. Due to the high cost associated with the power required to operate the existing treatment equipment, which was near the end of its useful life, 一个可靠的, 完全冗余, 效率高, high recovery reverse osmosis treatment plant was sought.

Bermuda Desalination Water Treatment Plant Seawater RO
Bermuda Desalination Water Plant Reverse Osmosis Seawater
Bermuda Seawater Treatment Plant RO Desalination


In 2012 低质粗支亚麻纱 was contracted to supply a pilot plant, operated by the utility, to conduct a proof of concept pilot study. In June 2013 低质粗支亚麻纱 R/O Systems was selected to supply the reverseosmosis treatment equipment. Major design points for this system included high feed water recovery, premium efficiency low head boost and high pressure feed pumps, piping designed for minimal head loss, low membrane element flux design, a space saving frame design ‐ where both trains were mirrored on one frame, and supply and installation of a fully integrated plant SCADA system.


A 完全冗余 5:2 ‐ seven element brackish water RO system designed and built by 低质粗支亚麻纱 R/O has been in operation since July of 2014. The utility demanded quality materials and a system designed with low O&M costs and ease of operation as a basis of design.



百慕大4Seawater Treatment Plant SCADA Overview Control Screen

Brief R/O System Specification

老板:  私营公用事业
应用程序:  Brackish 'lens' water
启动:  2014年7月
容量:  Two (2) 300,000 gallons per day systems at 85% recovery
数组:  Two stage 5:2 array; pressure vessels contain 7 elements per vessel
预处理:  Clarification, MMF, Scale inhibitor, cartridge filter
Low Pressure Piping:  原理图. 80年聚氯乙烯
High Pressure Piping:  316 Stainless Steel
膜类型:  道琼斯指数440
Frame Material:  Fiberglass reinforced polymer (pultruded)

Feed Conductivity:  2,974 μS/cm (at start‐up)
Feed Temperature:  74 °F
给水压力:  106 psig
SDI:  3.40
Permeate Conductivity:  199 μS/cm (93.3%被拒绝)
渗透流:   173 Imperial gpm (85% recovery)
System Features: 
  • Corrosion Proof FRP frame
  • 316SS premium efficiency low head boost pumps (Grundfos, VFD)
  • 316SS cartridge filter
  • scale inhibitor system
  • 316SS premium efficiency high pressure feed pumps (Grundfos, VFD)
  • CIP system (Grundfos, VFD)
  • PLC Ethernet based control system with HMI interface.

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