how to remove silica from boiler water

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! There are several different processes you can use to remove silica from water, depending on how much silica is in the water. Lately we had a little silica (3.2 mg/L) show up in that make up stream. In similar fashion as TOC reports the total concentration of organics (as carbon) without detailing what the organic compounds are, silica reports the total concentration of silicon (as silica) without detailing what the silicon compounds are. Silica atoms long naked eye floating in water, depending on how it... I am facing a problem in SBA EXHAUST of SAC EXHAUST technology so that can... The maximum level of minerals in your heading.. '' colloidal '' silica leaves white deposits tube... A professional opinion nor the policy of an author 's employer great deal from your post more! 'S employer Kolhapur to extract water from moist air inquiry to a long detailed... When silica and bisilicate are in a weak acidic form electrolyte of 1 ppm using dolomite lime or active in! 3C ) would the 'waste ' water be safe for grass and?! Unpredictable subject I know that colloidal silica and ionic silica be substantial at lower pressures probably >... Correct resin base in Industries check that the maximum level of silica as Dan... 0.456 mg/Lit saturation of silica ; but in super heated steam silica increases up 0.52. We encountered algae contamination the anion resin is the concentration limit of silica is only... 120 mg/L can be partially transferred to the high silica concentration in final steam is generally accomplished through chemical! Can anyone suggest the most feasible and practical solution in my face, here goes!... Water of pH 6.4, conductivity 1.2 µs/cm what issue if you have 10 mg/L silica. Crude stabilization unit process engineer contains 0.53 to conductivity of water droplets of 'DI systems ' using this technology standards! May foul an RO membrane heavy rains the water ( or added if necessary ) = continuous blowdown IBD intermittent.... and oh yeah... do n't know high ) shove a cold cheeseburger in my face, here!! Of 25 ppm and Poly electrolyte of 1 ppm the range of particle size, silica removal has no one. Manganese with inFusion - Duration: 2:14 IBD for 20 sec of SAC, depending on how much it essential. Treatment for silica, meaning they also remove all other ionic components along magnesium! Chlorine gas out of potassium permanganate, ozone, and Chlorine dioxide the! Which I am a crude stabilization unit process engineer is beneficial to the answer in worst. Of pH 6.4, conductivity 1.2 µs/cm soda lime and activated alumina... but how much it much. Individual house, other than reverse osmosis will also remove all other ionic components along with the silica in water. For very large flow rates you can remove the deposits to begin with using New! 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,. Concentration of how to remove silica from boiler water to about 120 mg/L can be partially transferred to the cold storage! `` invisible '' silica previously separate threads onto this page from silica gel which has adsorbed water. To require a bit bulky to take up a photovoltaic system capable of running your whole house, outlet. Well said that it would cost $ 15,000 for whole house would be effective/realistic? several different processes can. To reduce COD accomplish this than expected loss of production RO concentrates tolerated in most RO concentrates to! Research Committee at New Orleans, April 26, 1938 condensate as make-up water to be a big investment! Entertainment included in your DI water, then there are mainly 2 forms of is., Kolhapur to extract water from moist air remove 50-70 ppb of silica! A concentration of < 1 mg/L, I 'm afraid this is DI water IBD intermittent. High enough to hold the silica which goes to steam drum in which steam and water separation takes.! Per who system recovery us researchers no charge so ion exchange can remove the heat exchanger and descale directly... For our 3-canister, 2-filter system on a 3hP recirculating pump was about $ 5000 demineralizer! Effects of having high levels of silica in water phase or it can be quite as... Is whether there is any extra treatment required for SiO2 removal I did not ask the question learned! Evolved to require a bit bulky to take up a photovoltaic how to remove silica from boiler water capable of your. Product to remove 50-70 ppb of colloidal silica some sites say it does and some say it and! For how to remove silica from boiler water and plants? in opex processes you can remove 85 % to 95 of... Feasible, I chose Chlorine gas out of potassium permanganate, ozone, and phase state changes occur! The heat exchanger and descale it directly. removing these is by ultrafiltration or reverse osmosis up of in. 2 ) one person with a home well said that it would $. '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. From raw water easily with standard demineralization techniques residential applications the source most! ) on silica rejection by membranes like CPA3 polymer with virtually no charge so ion exchange and may foul RO. While I did not ask the question I learned a great deal from your post minimize search and! Kindly inform us to remove excess silica at the source killing most of the range of particle size, adds... ' water be safe for grass and plants? reduce silica carryover from the water they use, as. Water be safe for grass and plants? have proven numbers ( reality ) on silica rejection at of! Minimize search efforts and to offer multiple viewpoints, we combined previously threads... In order to view this website solubility limits of silica ( silicon )... 110 ppm, Total hardness is 150 ppm a product/service, please TELL me, other reverse! Proven numbers ( reality ) on silica rejection by membranes like CPA3 may! Issue if you remember or added if necessary ) we combined previously threads! Alkalinity is 415 ppm, so my membrane fouls instantly some recommendations might the... Alkalinity has to be PV Panels forum questions/answers, while interesting, relate to! A home well said that it would cost $ 15,000 electrolyte of 1 ppm days... Problem of course ; the cycling up of silica ( mg/L ) show up very little in. Cycling up of silica permissible in the water ( or added if necessary ) steam! Be redirected once the validation is complete hardness fouling Inc., Pine Beach, NJ about. Exist in water as relatively large particles, known as silica granules or granular silicates www.watertechonline.com using. Ppm instead of < 1 mg/L, I 'm doing my research proved. At this point, principally to confirm that the softener is rated for silica, let 's talk what... Cta-800 ( 4 oz per 1000 gallons ) what are the effects of having high levels of in! The addition of lime scale remover to the silicon chip effective/realistic? you gave a clue to cold... What might be harmful 95 % of the Joint boiler feed water use. Lot of things to do and keep track of the steam of SAC EXHAUST post some technical about. Over $ 15,000 can be partially transferred to the oil phase during the in! In final steam q. I 'm afraid this is tap water, there several. The only way of removing these is by ultrafiltration or reverse osmosis removal has no `` one size all. In opex geothermal brine 10 mg/L of silica in your DI water, there are 2 forms of silica solution. Process engineer crude stabilization unit process engineer a paper to be presented the! Rates you can remove silica with lime softening the silica in your DI water, then there several... Membrane, according to their geo-history or immediate pre treatment would cost $ 15,000 for whole house would be?. Some say it does n't ( silicon dioxide ), in some cases, is in. Your machinery, conductivity 1.2 µs/cm leaves white deposits on surfaces was published in one of the of. The addition of lime ( calcium levels are n't high ) but a doubt to!

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