RO Membrane – Reverse Osmosis Membrane Materials, Types and Structures Reverse osmosis RO membrane differs by the material of the membrane polymer and by structure and configuration. Based on its structure, RO membrane can be divided into two groups: conventional thin-film composite and thin-film nanocomposite. Based on the thin-film material, conventional reverse osmosis RO membrane
- Published in Seawater Desalination, Technology, Water Treatment
A clean in place CIP system is effectively used to preserve & clean fouled/scaled reverse osmosis system RO membranes using chemicals & following procedures.
- Published in Technology, Water Treatment
What is Dissolved Air Flotation Definition – DAF Unit Dissolved air flotation (DAF) technology is very suitable for removal of floating particulate foulants such as algal cells, oil, grease or other contaminants that cannot be effectively removed by sedimentation or filtration. Dissolved Air Flotation DAF system can typically produce effluent turbidity of <0.5 NTU and
- Published in Technology, Water Treatment
What is a Reverse Osmosis System – RO System Definition A Reverse Osmosis System is basically the application of the reverse of the Osmosis process. Where pure water is produced out of brackish or seawater by applying a pressure to the concentrated salt solution above the applied and osmotic back pressures. An Industrial Reverse Osmosis System works
- Published in Technology, Water Treatment
What is a Cartridge Filter Definition A Cartridge filter is a fine microfilter of nominal size from 1 to 25 um (micron) made of thin plastic fibers or other fine filtration media that is installed around a central tube to form a standard-size cartridge. Cartridge Filters are often used as the only screening device between
- Published in Technology, Water Treatment
What is Reverse Osmosis (RO) Definition Reverse osmosis (RO) is basially the reverse of the osmosis process. Scientists found that all that is required to reverse the process of osmosis is a suitable semipermeable membrane and applying a pressure to the concentrated salt solution above the applied and osmotic back-pressures, thereby forcing pure water through the
- Published in Technology, Water Treatment
What is Sedimentation ? After coagulation occurs followed by a flocculation process before entering a sedimentation basin / clarifier. Flocculated particles enter a sedimentation basin and begin to settle. Particles also referred to as sediments agglomerate to form larger flocs. This process is called sedimentation. When flocs / particles enter a basin and then start
- Published in Technology
What is Clarification ? Clarification has more than one application in water treatment. Its usual purpose in a conventional treatment process is to reduce the solids load after coagulation and flocculation. A second application, a process called plain sedimentation, is removal of heavy settleable solids from turbid water sources to lessen the solids on treatment
- Published in Technology
Semipermeable Membrane Definition Semipermeable membrane is a thin, soft, pliable sheet of material that allows certain substances to freely pass through it while restricting the passage of other substances. In the water treatment field, a semipermeable membrane allows water to pass freely while restricts the passing of dissolved materials. Water passes through a semipermeable membrane
- Published in Technology, Water Treatment
What is Bioflocculation Bioflocculation is marked as an advanced, non-chemical, microbial based pre-treatment technology. The technology of bioflocculation uses a novel Rapid Sand Filters RSF configuration together with an extremely porous volcanic Tuff filtration medium. This provides an enlarged surface area for microbial development and biofilm reproduction and propagation. In the majority of large scale seawater
- Published in Technology, Water Treatment
What is Continuous Electrodeionization (CEDI) The continuous electrodeionization is a recent invention that was brought by a water treatment company which patented the CEDI technology. CEDI which is the abbreviation for the continuous electrodeionzation is considered as a smart evolution to conventional Electrodialysis Reversal (EDR) technology. It is introduced as a blend of ion exchange membranes, ion exchange
- Published in Technology, Water Treatment
What is a Pressure Membrane / Pressure-Driven Membrane The pressure membrane processes are: – Reverse osmosis (RO) – Nanofiltration (NF) – Ultrafiltration (UF) – Microfiltration (MF) A pressure membrane is a membrane that functions by applying a pressure. A pressure membrane is permeable to water but not to substances which are rejected and removed. All membranes including any pressure-driven
- Published in Technology, Water Treatment
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