HERO is a registered trade marked acronym for High Efficiency Reverse Osmosis. The internationally patented HERO process involves operating an RO system(s) at the highest pH level acceptable to RO element manufacturers (typically a pH level of up to 11 in RO reject stream) in conjunction with hardness removal, alkalinity removal, and/or dissolved gas (CO2) …
Things to Consider The feed water quality that you are starting with – Surface water, well water, suspended solids, dissolved solids The quality that you need – dissolved solids, TOC, turbidity Reverse Osmosis Equipment RO will typically give you rejections in the range of 96 – 99+% on dissolved solids. Nanofiltration (NF) will typically give …
Three Indications of Fouling Permeate Rate Conductivity Final pressure Foulant Composition Knowing the nature of the membrane foulants is necessary to select cleaners. Foulants are typically mixtures of two or more of the following: scale, organic debris, metal hydroxides, bacteria, colloids, and chemical properties. Determining When to Clean Cleaning is recommended when: there is a …
Electrodeionization (EDI) process removes ionizable species from liquids using electrically active media and using an electrical potential to influence ion transport. Why EDI? Continuous water purification without regeneration chemicals, Reverse Osmosis replaces primary cation/anion exchange, and Electrodeionization replaces mixed bed ion exchange Proven in a wide range of demanding applications: Power, Utilities, and boiler feed …
Why use Pre-treatment Equipment? RO is designed to filter out dissolved solids not suspended solids. Colloidal materials, bacteria and suspended solids will block the feed channels of an RO membrane and cause fouling. Pre-treating with equipment and chemicals will increase the life of membranes. In the long run, pretreatment will save money and ensure RO …
