Colloide Awarded Contract to Upgrade Dundrum WwTW
Dundrum WwTW Award Received
Colloide’s latest waste water treatment project awarding encompasses upgrading Dundrum WwTW, in County Down. Colloide were awarded the project earlier this month which entails the design, installation and commission of an MBR system in order to achieve a higher throughput and more efficient plant to serve an approximate population of 2000 people.
Working alongside NI Water, works on the project are to begin in early 2018 with installation expected to take place in August 2018. Colloide most recently have completed refurbishment works at Bellek WwTW, and are delighted to be adding Dundrum WwTW to our portfolio of water treatment projects.
Project Update
Colloide replaced the existing membranes at Dundrum WwTW with new MBR cartridges in the existing tanks. This achieved a higher throughput and a more efficient plant. The scope also included a full backwash and chemical cleaning facility, plus the option of filtering using pumps or gravity. There were 8 No MBR modules in total, each module identical and served from a common aeration system. The new membrane system was designed for 2600pe. This requires a peak flow of 15.5l/s and an average flow of 6.8l/s. The new modules 8no. replaces the existing modules and gave a total area of 3,840m2 .
Colloide received the following key performance figures with all membranes on line:
• net flux of 14.53 LMH at the maximum flow of 15.5l/s.
• net flux of 6.38 LMH at the average flow of 6.8l/s.
With the requirement to treat flows with one of the MBR tanks off line, the following figures represent the
resultant flows with three out of four tanks on line (i.e.75% membranes on line):
• net flux of 19.38 LMH at the maximum flow of 15.5l/s.
• net flux of 8.50 LMH at the average flow of 6.8l/s.
The function of MBR System
The MBR discharge permeate either by gravity or pumped discharge via positive cavity pumps. The modules within each of the cell have a backwashing facility which maintains membrane cleanliness with the aid of sodium hypochlorite chemical dosing.
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Colloide’s submerged membrane bioreactor (‘MBR’) is the most technically advanced product in its field, giving unparalleled performance in wastewater treatment. Learn more about our MBR technology here.
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