CHANGING WAY OF RO PLANT OPERATION

The DO-HS cleaning method offers a novel approach for the RO membrane reliable operation. RO membrane will be kept continuously clean by preventive, short and frequent membrane backwash. DO-HS process is the on-line technique without interruption of the operational process unlike widely used CIP technique, which requires shut-down operational train to perform membranes cleaning and disposal of aggressive solutions. The DO-HS is the environmental and membrane friendly, technique, which is performed on-line, at low cost. Process can be easily applied to the operational facility as well as to be designed for the new project.

• Operation with decline in the water production.
• Increase in power consumption, pressure drop, product conductivity, and membrane replacement rate.
• Several conventional cleanings per year, with expenses of the cleaning chemicals, production losses during cleaning time, and losses related to the disposal of the cleaning solutions.

• One or several automatic preventive DO-HS cleanings a day.
• Productivity, power consumption, product quality kept at a designed point.
• Membrane replacement rate is low.