The ECOCLEAN 211 alkaline liquid reagent based on alkaline agents, complexing agents and surfactants is intended to remove colloidal deposits, organic impurities, silicon deposits and biological slime from thin film membrane elements of reverse osmosis and nanofiltration.
It provides effective cleaning of membranes over a wide temperature range.
The reagent is manufactured according to the Ukrainian technical standards 20.5–31749798‐004:2013.
contains complexing agents and the buffer system to provide effective removal of various kinds of deposits from the surface of the membranes
high efficiency in removal of biological, organic and colloidal impurities compared to regular alkaline solutions
highly buffered to resist pH changes during the cleaning process
cost-efficient: quality cleaning guarantees long service life of the membrane elements
compatibility with the Dow™ Filmtec™ and Dow™ Ultrafiltration™ membrane elements attested by the manufacturer
Form for application
2% solution pH
Impurities to be removed
colloidal deposits and suspended particles, silicates, organic impurities, biological slime
colorless or yellowish solution
Density at 20°C
10 kg pail
Contains alkaline reagents and surfactants intended to dissolve and separate colloidal particles, organic impurities, silicon deposits and biological slime from the surface of membrane.
The buffer system of the reagent provides maintenance of required pH value during cleaning, as well as temperature compensation of pH for the most effective removal of deposits over a wide temperature range.
The complexing agents significantly increase efficacy of silicon, iron, manganese and aluminium compounds removal, and prevent recurrent formation of the deposits of the dissolved impurities.
For detailed guidance related to chemical cleaning of the membrane elements, please contact a representative of the Ecosoft company in your area.
Fill the tank of the chemical cleaning installation with required volume of reverse osmosis permeate or deionized water. Add sufficient volume of the reagent to create 2% solution. Mix the blend until the reagent is completely dissolved.
Recirculate the cleaning solution through each reverse osmosis system stage, one at a time, for a minimum of 60 minutes at the flowrate recommended by the membrane elements manufacturer.
The heavily fouled membrane elements have to be soaked in the cleaning solution beforehand.
It is recommended to monitor the pH of the solution during the cleaning process. If the pH level is remaining at the level of 10.5-11.5, and the solution isn’t growing turbid, you can use it for the cleaning of the following elements. But if during the cleaning the solution pH is dropping 9.5 and lower, it is recommended to prepare a new solution and repeat the cleaning.
When the cleaning is completed, wash the membrane elements with recirculation of the reverse osmosis permeate until the constant pH level of the wash water is reached.