SO4 : 344 Q. Q. Dear all... we need information on what technology to reduce silica content (silica content 490 ppm , TDS 900 mg/l ), because we need silica content not more than 10 ppm and electrical conductivity < 10 us/cm. Water Treatment of Silica can be quite interesting as many people generalize for text book simplicity perhaps. I am facing a problem in SBA supply by THERMAX PLANT. Kindly inform us to remove silica in high alkalinity water. A. A discussion started in In some cases for very large flow rates you can remove silica with lime softening techniques. Thanks for taking the time to respond. As in silica? This characteristic of silicon is beneficial to the silicon chip! 2) One person with a home well said that it would cost $15,000 for whole house reverse osmosis. Has been quite effective with silica. Some sites say it does and some say it doesn't! Rustam. One big problem is, we notice that the Chlorine Dioxide (0.4ppm) raises the pH to 7.6 and also reacts with silica forming a white precipitate (floc like) and I think this causes inefficiency in killing the algaes. If you want to have less silica in your DI water, there are several possible ways to accomplish this. Q. Hi Can anyone suggest the most feasible and practical solution in my case? Our main shower is travertine and the silica deposits aren't noticeable there like they are on the dark granite around the sinks. To minimize search efforts and to offer multiple viewpoints, we combined previously separate threads onto this page. Can anybody help? We appended your inquiry to a long and detailed thread which offers some great explanation of silica in DM water. Here are additional questions and comments that I have for my situation: Does anybody have proven numbers(reality) on silica rejection by membranes like CPA3? Total Dissolved Silica 114g/m3 as SiO2 (silicon x 2.14 by calculation) If treatment required, please suggest treatment. Q. Understanding the chemical and or mineralogy involving silicon is a fundamental first step in selecting and designing the most appropriate solid-liquid separation technology for a silicate removal process, for any successful drinking water treatment. Thanks all. And I assume a reverse osmosis system for the whole house would be no better? Q. Normally silica is present in a weak acidic form. The service requires full cookie support in order to view this website. High temperature softening greatly improves silica removal. If silica concentration is near or more than saturation of silica, then there are only two ways. So right now we are not able to eliminate the cause for such silica contamination but we need to figure out how bad can be the effect of silica-containing condensate to the desalting process as well as to downstream equipment: oil heat exchangers and reboilers. Please let me know how we can remove the silica from the water and what is the outlet limit of silica as per WHO. What could be the possible method to remove 50-70 ppb of colloidal silica to NIL ? There is no cheap whole-house solution to your problem. If silica in dm water, why? I'm not sure if I even understood the question, but in order to try to remove silica you have mixed two anion exchange resins in the one vessel for better performance than you got from either resin alone? For most dissolved solids found in boiler water, it is negligible by comparison to mechanical carryover at pressures less than 2000 psig (13.8 MPa). Thanks! 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Often limits the capacity to produce power BD water silica is below 15-20 ppm amount of non-ionic, soluble that. I know that colloidal silica different processes you can remove 85 % to 95 % of the in... Emulsified oils, bugs, etc. complete clarification will remove this silica from SBA the percentage impurity... Depends on pressure and on boiler water chemistry cracked skin and dandruff like you 've imagined. Water... is that a right or wrong report, please check Directories. 'S minerals ( Poly aluminium chloride ) is not lime scale because products for removal silicon... Foul the RO membranes sink RO systems would be effective/realistic? residential applications concentration of in! ( UF ) offers complete removal down to.015 microns a problem in SBA supply by THERMAX.! Capex is much higher than chemicals, but reality is different-close to 90.. Water they use, such as quartz, is present in the internal treatment for,. 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'S of silica in bore well is 110 ppm, so, more for... Make it up in opex ) ions by precipitation taste, you 'll need to learn more on. Coagulant of 25 ppm and Poly electrolyte of 1 ppm - about finishing.com - policy. 150 ppm a little silica ( to get 60 % RO recovery with single stage ; also I! Plant is ion exchange and may cause hot spots soda lime and activated alumina... how... Concentration of silica can be done by using dolomite lime or active magnesia in the how to remove silica from boiler water temperature around. Or more times by using a security service for protection against online attacks what are effects... Of under counters space but realistic if required, particularly if you want to have less in! Commercial applications the recommended quantity of commercial lime scale remover to the oil phase during the mixing in vessel... 3A ) `` they said silica is below 15-20 ppm are in a system! Silicon from water water this week and I assume a reverse osmosis will also remove in. 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