Reverse Osmosis Specialist Reading
Introduction
I am a reverse osmosis specialist covering the Reading, UK area. My name is Rami Elias Kremesti, I am a CIWEM chartered water treatment specialist with a passion for Reverse Osmosis technology. I am based in High Wycombe, UK and I help engineers design better RO systems.
History
I started working with RO technology on a coal fired power station in Bulgaria in 2007. The membranes lasted ten years with a good CIP system and trained operators. The pretreatment consisted of a Densadeg high rate compact clarifier followed by chlorination and active carbon filtration-dechlorination. The system was connected to a static CIP (Clean In Place) system and regular disinfections and cleanings were done. Acid, base and a Biocide IBC provided the needed chemicals. An antisalant was dosed too.
RO Training
I teach an RO course with CIWEM. In this course we cover basic topics such as design, operations and maintenance and membrane autopsies. RO systems are used on power stations to produce demineralized water. They can also be used to recycle cooling tower blowdown water. Seawater RO systems are used to turn sea water into drinking water in countries such as Saudi Arabia and Israel. RO systems are much more efficient that Multiple Effect Evaporation desalination systems which require a lot of energy to distil the water. However, RO systems are vulnerable to scaling and biofouling. Therefore a good understanding of RO operations and regular testing and continuous monitoring of parameters such as flow, conductivity and feed pressure are necessary.
RO systems have been used successfully in Singapore to transform tertiary sewage effluent into drinking water using the Newater technology. They can also be used to remove PFAS from waste water. After removal, A C-F bond breaking process is needed for total destruction and mineralization of PFAS.
Problems
If you have an RO system in which you are replacing membranes too often then something is wrong with your pre-treatment system or the way you are operating the system. Kremesti Enviuronmental Consulting Ltd can help.
Have a look at our RO Cleaning Chemicals and Best Practices white paper. We also have a presentation on Reverse Osmosis which you can download here. Also look at our RO System Troubleshooting Guide.
Picture Above: Three Stage Brackish RO System in a Power Station in Bulgaria
Thank you for visiting our website. We look forward to helping you with your RO system.
Kind regards,
Rami Elias Kremesti M.Sc., CSci, CEnv, CWEM
Biography of the Author
Rami Elias Kremesti is a water treatment specialist with over 20 years of experience. He holds an M.Sc. degree in chemistry from the USA and is chartered in the UK.
With Dr Boris Liberman CTO of IDE