Transcription of Water Treatment’s ‘Gordian Knot’ - University of Crete
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Water Treatment’s ‘Gordian Knot’ - University of Crete
May 2003 | solubility of amorphous silicais important to the operation ofwater-dominated productionprocesses. In areas such as Texas, NewMexico, Arizona, parts of California,southern Europe, the Pacific Rim andLatin America, the Water used for indus-trial applications contains high silica con-centrations (50 parts per million [ppm]to 100 ppm, expressed as silicon dioxide[SiO2]). These concentrations result fromquartz (crystalline SiO2) dissolution fromrock formations into the potential for silica -scale deposi-tion poses serious problems in waterwith a high dissolved silica content. Infact, silica -scale problems could betermed the Gordian Knot of Water treat-ment such problems are extremelydifficult to resolve. Personnel responsi-ble for power plants, evaporative coolingsystems, semiconductor manufacturingand geothermal systems must monitorwater silica levels very precipitation/deposition fre-quently is encountered in evaporativecooling systems, where salt concentra-tions increase through partial evapora-tion of the cooling Water .
product (colloidal silica) — a compli-cated mixture of the above components. Operation in a high-pH regime is not necessarily a solution for combating silica
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