In our boiler drum, saturated steam contains 0.01 silica but in super heated steam silica increases up to 0.52 ppm. Personally, I think the return on the solar panels, being cost savings on electricity over time, is a better one than not having streaky dishes, but that's just the opinion of someone who drinks my wine out of coffee mugs anyway so the dog doesn't knock them over... If you read earlier discussion in this thread, one of the things you might notice is that with water purification there is an efficiency of scale (oh no did I just make a bad mineral deposits pun? This causes loss in efficiency to the extent of about 10 per cent in a week’s time. "palette": { Sir, Water and chemicals enter the top of the unit and flow to the bottom of the softener through a downcomer. When a person uses silica supplements to detox, the Aluminum and the other heavy metals present in the body are passed in the urine and eliminated with it. I'm afraid this isn't going to be the news you want to hear. For high silica waters as seen in Mexico, Hawaii or other sandy areas where levels are 50-60 ppm or higher, the ion exchange and RO options are more troublesome because you may exceed solubility limits for one, and also you are more likely to have significant levels or non-ionic colloidal silica. You'd have a contractor set up a system that includes a pump, a prefilter, one or more ion-exchange canisters full of resin, a postfilter, a holding tank, various pressure monitoring gauges, pipes, hoses, and a conductivity sensor that will indicate when the system is not able to process your incoming water any more due to the resin being saturated or 'spent'. There are multiple treatment options available for removing silica from water. What about just a water softener? Reverse osmosis will also remove silica by 90-98%. Mg : 910 In Arizona this presents a problem of course; the cycling up of silica often limits the capacity to produce power. Thank you again, Colloidal silica has no ionic properties, but has a relatively large size and can be effectively removed by fine mechanical methods like Ultrafiltration (UF). How can I go about removing the Silica? We developed a product to remove silica from geothermal brine. 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? Silica in bore well is 110 ppm, T. Alkalinity is 415 ppm, Total hardness is 150 ppm. Conventional precipitation technologies are reasonably cost efficient to achieve partial … We are using FeCl3 as coagulant of 25 ppm and Poly electrolyte of 1 ppm. elements_selector: "iframe" plant treatment water We are consuming high ppm of lime and dolomite in the range of 950 ppm each to reduce the level up to 50 - 60 ppm. Besides having a flat, awful taste, you actually are better off with a certain level of minerals in your drinking water. [last name deleted for privacy by Editor], -- this entry appended to this thread by editor in lieu of spawning a duplicative thread, Thirumalai Chemicals Ltd - Ranipet, Tamilnadu, India, Boiler Water Treatment Chemist - Brisbane QLD Australia, ©1995-2021 finishing.com, Inc., Pine Beach, NJ, How Google uses data when you visit this site. The second method is known as colloidal silica. Silica carry over by steam is believed to la dot to carry one of taller drops containing dissolved silica along with steam (i.e., priming). At a concentration of < 1 mg/L, I doubt that it is colloidal silica. Please reply at the earliest. Speaking from experience here; do not recommend. Thanks for taking the time to respond. Osmosis membranes, using water collected from the Mint Farm, and their abilities to remove Silica are discussed below. Buildup can disrupt equipment function, but current silica removal methods can cost 1.5–2 times more than simply using fresh water. A. PAC (Poly aluminium chloride) is not approved. <1 mg/L should be possible. The previous forum questions/answers, while interesting, relate mainly to treatment of large water treatment systems or for industrial use. This characteristic of silicon is beneficial to the silicon chip! In silica gel, the physically adsorbed water can easily be removed when kept in an air oven at temperature around 150 degree centigrade temperature for 2-3 … Q. Hi This paper concerns simultaneous removal of fluoride and hydrated silica from groundwater (4.08 mg L −1 fluoride, 90 mg L −1 hydrated silica, 50 mg L −1 sulfate, 0.23 mg L −1 phosphate, pH 7.38 and 450 μS cm −1 conductivity) by electrocoagulation (EC), using an up-flow EC reactor, with a six-cell stack in a serpentine array, opened at the top of the cell to favor gas release. Silica gel extracts water vapor from the air as it is drawn through a silica gel bed, as well as covering a wide range of temperatures. Silica is also called silicon and is a … Info was published in one of the Power Generation publications. There is no cheap whole-house solution to your problem. 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. The most common approach is lime softening, which is a process where calcium hydroxide (lime) is added to water to remove hardness. Nor shower in it, or use it in a fish tank. I mean by distillation method can we reduce reactive silica from 2 ppm to below 0.02 ppm. Can anybody tell me about silica removal process? Thanks A. Dear All...for all of you who work in Industries. When questions are presented as requests for clarification of suggestions that have been offered, they usually elicit enthusiastic response; but if earlier answers are just blown off, and questions are posed as "start over for me because I can't be bothered putting in any work to try to appreciate what you wrote", the thread often dies). Silica is a hard, ceramic/sand like mineral formed from Silicon and Oxygen. SiOs +  6NaF + 3RH2   —-> 3Na2R  + H2SiF6 +2H20. Water Treatment But this "invisible" silica leaves white deposits on surfaces. If you use it to water your houseplants, you must add CalMag to about 100ppm or the plants will soon show signs of multiple nutrient deficiency as the purified water leaches nutrients from the soil and roots. RO is an option but to centrally treat the water will cost over $15,000. Check silica in reject water. Lime softening utilizes the addition of lime (calcium hydroxide) to remove hardness (calcium carbonate … Any other good ideas for dealing with this? Our main shower is travertine and the silica deposits aren't noticeable there like they are on the dark granite around the sinks. Thanks. Silica Source of Silica Silica (SiO 2) is an oxide of silicon, and is present in almost all minerals: It is found in surface and well water in the range of 1 - 100 mg/i.Silica is considered to be colloidal in nature because of the way it reacts with adsorbents. Your operating cost per gallon of water produced on a homeowner sized system is going to be higher than what we pull off out here in the industrial settings, where we have large purchase contracts for consumables (resin) that we get on bulk pricing, and run in facilities that already have means to legally dispose of this type of waste, and skilled labor to operate it. Waste Water Treatment A. And I assume a reverse osmosis system for the whole house would be no better? 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. Water Analysis Your best approach depends upon what else is in the water and what quality you want the treated water to be. Now simply pour the water on the corals to remove the silica. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. My concern is whether there is any extra treatment required for SiO2 removal? operation It can also be reduced by coagulation method such as in a clarifier system. A. Hi Chirag, The initial investment will be high but it will help those dealing in HP Boilers. The best way to improve your RO recovery, is to go for Lime soda softening and bring down silica level to about 10-12 ppm. Reactive silica is what it is called when silica and bisilicate are in equilibrium with each other. Needless to say, silica removal is not as easy as it appears. JUST the materials/components. While I did not ask the question I learned a great deal from your post. In some cases for very large flow rates you can remove silica with lime softening techniques. IBD = intermittent blowdown. Ved. Thanks for the responses. The cost of materials for our 3-canister, 2-filter system on a 3hP recirculating pump was about $5000. Thanks. As per Dan Cooper, Mg helps in removal of silica; but in my research it proved wrong. A. Silica can be removed from raw water easily with standard demineralization techniques. A. Hi Musa. If silica concentration is near or more than saturation of silica, then there are only two ways. Normally silica is present in a weak acidic form. This is not lime scale because products for removal of lime scale have no effect. Water Purification & Install'n Chemicals & Consumables Still, if you don't trust your lab analysis, you'll have to have some other person or service re-do it -- you can't possibly rely on an internet vote to override an actual chemical analysis :-). Q. A canister return/regenerate contract can cost thousands per year. It's going to be a big initial investment. Do you think under sink RO systems would be effective/realistic? Please keep on posting on this topic. This is only about 60% recovery. Analysis. Any questions please feel free to ask me about this. Disinfection remove colloidal and dissolved silica, which can be found in high concentrations in brackish water. Quick notes on what it is and how it works: 3b) I wash glassware and flatware by hand. Q. In super-heaters, water dries up and dry steam carries forward the silica. }); Automatic dishwasher chemicals include a serious dose of surfactants to help rinse clean. We want to decrease the chemical consumption. The silica will condense at the first big pressure drop, which is invariably, across your turbine, leaving silica deposits and consequent loss of balance, vibration, and eventual catastrophe! I am not educated in the 'hard' sciences so most of the information provided in this thread for water experts over the many years is above me. })}); Not a lecture hall but a roundtable with a seat for you! Can anybody help? The main concern is the use of membrane filters after chemical oxidation using Chlorine gas and pH and alkalinity adjustment using Calcite Filters. More likely it is reactive, soluble silica. Tina Nenoff, a chemist at Sandia National Laboratories, said: “When you have silica buildup, heat transfer is a problem, clogging is a problem and corrosion is a problem. Q. I have a well, used for our house, that has high level's of silica (103 mg/L). That's why the water purification companies whose marketing is aimed at the retail/residential market can get away with charging what they do for basically taking on all the headaches themselves! Another important source of silica in water is the sand watertreatments  filter. If this is tap water, then 5 mg/L of silica is a relatively low number. It is very possible that you have 10 mg/L of silica in your DI water. MY PLANT WAS RUNNING SMOOTHLY BEFORE THAT. One of the most common methods of removing silica from drinking water is lime softening. What is the most efficient process to remove 180 ppm of silica (reactive or colloidal) to Please forgive any resultant repetition, failures of chronological order, or what may look like readers disrespecting previous responses -- those other responses may not have been on the page at the time :-), Q. I am experiencing problem with Silica rejection by RO membranes. If you suspect that silica is present in your household water supply, it is always best to contact a water professional for an evaluation. This will not ion exchange and may foul an RO membrane. Q. Hi there, If you're talking about the concentrated water from the other side of the membrane, I wouldn't put it on any plantings I care about, although a controlled application of Silica is indeed very good for a plant's immune system- this could be scorch-level concentrated, including with other stuff like Sodium, though so no. NOT including labor or resin matrix. Thank you. I have come across the same problem to remove Silica (approximately 30 mg/L) in bore water to drinking water standard. Sir, Total Dissolved Silica 114g/m3 as SiO2 (silicon x 2.14 by calculation) in bore well water analysis (in ppm): water treatment plant Q. Silica present in water, tests say Silica (mg/L) 5.72 If silica in dm water, why? Q. Silica value is coming very high in dm plant. Can anyone explain why did this happen and is there anything where alkalinity comes into picture? water plant Q. I understand that Total Silica = reactive silica + unreactive silica, so does the lab result give me unreactive silica? In lime softening the silica is co-precipitated along with magnesium present in the water (or added if necessary). Please give a solution, Since silica can accumulate on machinery surfaces and cause hard mineral deposits known as scale, many facilities work to remove this contaminant before it causes production issues. watertreatment Dissolved silica is best removed through reverse osmosis, while colloidal silica is best removed through ultrafiltration. A quick perusal of sales of these suggests that using them for all water obtained at our bathroom and kitchen sinks would be quite affordable. 4)" Is it healthier to drink our minimally treated spring water which always passes the utility's required testing or to drink RO water from which minerals are removed?" H2SiF6 (which is strongly ionized), by adding calculated quantity of sodium fluoride ( NaF ). , Inc., Pine Beach silica removal from water NJ - about finishing.com - Privacy how. Not very good rejection is reactive silica of 2 ppm in RO2 treated water silica removal from water treatment with sludge! 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