Groundwater nanofiltration process efficiency improvement with additional concentrate membrane treatment

Nanofiltration (NF) membrane process with pre-ozonation for brine treatment

Nanofiltration Process Efficiency in Liquid Dyes Desalination

Membrane science and technology has led to significant innovation in both processes and products over the last few decades, offering interesting opportunities in the design, rational‐ ization, and optimization of innovative production processes. The most interesting develop‐ ment for industrial membrane technology depends on the capability to integrate various membrane operations in the same in...

Chitosan/Polyethersulfone Composite Nanofiltration Membrane for Industrial Wastewater Treatment

Chitosan/polyethersulfone (CS/PES) composite membrane was prepared from casting chitosan solution on polyethersulfone substrate membrane. The Substrate membrane was prepared by phase inversion technique using polyethersulfone (PES) and dimethylacetamide (DMAc) as solvent with and without the addition of polyvinylpyrrolidone (PVP) as pore-forming agent. The effects of the composition of the c...

Treatment of Trace Organics in Membrane Concentrate

Removal of pesticides from membrane system concentrates is studied. Our aim was to obtain a concentrate composition similar to its source by removing mainly the pesticides and natur al organic matter by 75 to 85%. Conventional processes used for surface water treatment; i.e. oxidation by ozone, adsorption and clarification, were tested for this purpose. Several experiments, using batch systems ...

An Autopsy of Nanofiltration Membrane Used for Landfill Leachate Treatment

Komurcuoda leachate treatment plant, Istanbul, which consists of membrane bioreactor (MBR) and nanofiltration (NF) system, faced rapid flux decline in membranes after 3-year successful operation. To compensate rapid flux decline in membranes, the fouled membranes were renewed but replacement of the membranes did not solve the problem. To find the reasons and make a comprehensive analysis, membr...