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Water Quality/Questions Answered by Expert Dr V N Sivasankara Pillai
| Subject | Date Asked |
| Water crisis | 1/10/2012 |
| Q: . I'm a Mass communication student from the Philippines, We are going to have an Investigative ... A: 1. Water is immediately used for drinking and and sanitation, cumulatively for food production ... | |
| water quality | 8/22/2011 |
| Q: I have noticed in my boyfriends flat lots of black marks in the bath were the water trickles from ... A: There can be three reasons. 1. Organic matter can support fungus growth, especially in poorly ... | |
| water electrical conductivity TDS | 8/17/2011 |
| Q: R/sir what is the formula for calculate EC by the water TDS. if the water TDS is 100PPM then what is ... A: The conversion is not that simple as it looks like. TDS is proportional to EC Large variations in ... | |
| pin holes in copper pipes | 7/16/2011 |
| Q: We are finding pin holes in the copper piping in our camp. Its an 80 person camp, so lots of ... A: Identifying location for sacrificial electrode needs some investigations. Based on the investigation ... | |
| pin holes in copper pipes | 7/12/2011 |
| Q: We are finding pin holes in the copper piping in our camp. Its an 80 person camp, so lots of ... A: The exact cause of corrosion of copper pipe cannot be easily determined. However, the following may ... | |
| High pH | 7/2/2011 |
| Q: Pillai We have run some water through an RO and produced water with a TDS of less than 20 ppm. ... A: There is little to worry. Probably the residual TDS is due to alkali carbonate which has a lower ... | |
| Waste water | 5/18/2011 |
| Q: Is there any aluminium content in the textile waste water sludge? and is there any aluminium content ... A: 1. The presence of aluminium in wastewater sludge occurs due to inherent presence in wastewater, and ... | |
| Rotten eggs | 4/25/2011 |
| Q: I live in the Acreage in Loxahatchee, Florida. We had a new water system installed on our home about ... A: The problem may be with the water supply or with the plumbing in or outside the machine. Have you ... | |
| Water Treatment | 3/21/2011 |
| Q: Sir, Practically it is observed that during water softening through SAC resin bed, the TDS of soft ... A: Note that sodium chloride is cheaper and economy dictates the use of NaCl for regeneration. During ... | |
| COD | 10/28/2010 |
| Q: what is the procedure of finding out COD. A: Chemical Oxygen Demand (COD) is usually determined using two procedures. One based on titrimetry ... | |
| yellow water | 10/6/2010 |
| Q: i just had a new electric hot water heater installed and my hot water is a yellow color,is this ... A: 1. Passing through a water heater will impart color to water if dissolved iron is present in raw ... | |
| Cistern water | 9/21/2010 |
| Q: We have a concrete cistern. We do not use it for drinking but for cooking. The water smells stale ... A: Water stored in the cistern for a long period (even for more than five days) with out a disinfectant ... | |
| Rust colored water | 9/13/2010 |
| Q: I just rented a house with a well that has some problems. First is the rust color. The shower/tub ... A: Your problem seems to be compounded by many factors. 1. Hot water appears red, and cold water ... | |
| Iron in water | 8/5/2010 |
| Q: We have a reverse osmosis water filter system. Normally it controls our problem with iron in the ... A: 1. It seems that the filter has failed, and you have to replace the filter element. 2. Also check ... | |
| yellow water | 7/22/2010 |
| Q: The tap water coming from the faucets in my house is yellow. It just suddenly changed color, it was ... A: There is no reason for immediate worry since you did not feel any effect till you noticed that the ... | |
| Does revverse osmosis remove most fluoride from water? | 7/6/2010 |
| Q: Unlike the EU, where fluoridation is not done and fluoride is not regarded as a health promoter, the ... A: Sorry I missed the mail, and hence delay in reply. 1. The cost depends on the quantity of water to ... | |
| Does revverse osmosis remove most fluoride from water? | 7/6/2010 |
| Q: Unlike the EU, where fluoridation is not done and fluoride is not regarded as a health promoter, the ... A: Fluoridation is a highly controversial subject, and an endless list of articles has appeared on the ... | |
| RO drinking water filter system | 6/22/2010 |
| Q: Pillai first of all, thank you for your advice and help to all people. I am Radiologist, living in ... A: Sorry that I had to keep you waiting. Regarding your questions, there are certain basic aspects of ... | |
| PH problem | 5/5/2010 |
| Q: We had a Reverse osmosis system of capacity 15000Gallons per day ,we are facing some problem with te ... A: Sorry for the delay. I was on a country tour. 1. Before deciding upon the treatment, please send a ... | |
| Water treatment for ag use | 4/15/2010 |
| Q: There is this company, ECO1st, that has a water treatment device that they claim uses a process of ... A: I have gone thru the site of www.Eco1st.net. They do not reveal the scientific principle behind the ... | |
| High pH well water | 4/8/2010 |
| Q: As a mission project I want to improve a well water supply in Kenya. The water test shows a ... A: Please send the full water analysis report, geochemical details and activities around the well. Have ... | |
| TDS Swimming Pool Levels | 3/23/2010 |
| Q: My TDS reading in my pool was 5900. It is a liner pool (concrete aquakit skin) and a low salt ... A: There is no specified level for TDS in pool water. Higher TDS gives a taste, and many may not like ... | |
| Water Treatment | 3/4/2010 |
| Q: Sir, Practically it is observed that during water softening through SAC resin bed, the TDS of soft ... A: Note that during softening, hardness-causing Ca % Mg ions are replaced with Na+ ions. 2 R-Na + ... | |
| yellowcolour water | 2/21/2010 |
| Q: our water has an yellow colour, no particles. After filteration through whatman filter paper the ... A: In the absence of odor, organic matter or industrial pollutant, the color seems to be due to iron. ... | |
| yellowcolour water | 2/17/2010 |
| Q: our water has an yellow colour, no particles. After filteration through whatman filter paper the ... A: Please name the source of water. Yellow color may be associated with Natural Organic Matter (NOM), ... | |
| pinhole leaks in my 3/4 inch copper recirculating line | 1/22/2010 |
| Q: I have experianced pin hole leaks in my 3/4 in copper recirculating line. Our water Dept. calims the ... A: The problem needs detailed investigation of water quality and corrosion potential. A visual ... | |
| Alum used for water treatment | 1/19/2010 |
| Q: i am currently doing a research on Aluminum sulphate and found that its major use is for water ... A: 1. Alum (filter alum) is the most widely used coagulant in water treatment, especially in drinking ... | |
| electrolyte water quality | 11/1/2009 |
| Q: pillai, i have see some drinking water bottle for rehydrate marked electrolyte,contain calcium ... A: Oral Rehydration solutions are given when there is loss of electrolyte leading to a dangerous fall ... | |
| health issue of sulphur smell | 10/20/2009 |
| Q: My daughter is trying to sell their house. There neighbor uses well water for landscape watering. ... A: Your question relates to use of poor quality water by neighbor, which affects you. The issue can be ... | |
| Usage of ReverseOsmosis | 10/14/2009 |
| Q: We have a STP plant of capacity 1000 kld & presently we are using the plant to capacity of 20% only. ... A: 1. Have you got alternate source of chiller cooling water? 2. Are you permitted to discharge treated ... | |
| water odor | 10/13/2009 |
| Q: I have a 2 year old home with well water. We use a whole house filter and the water is fine except ... A: Depending on geochemical origin, groundwater may contain low concentration of gases. In cold water ... | |
| water odor | 10/12/2009 |
| Q: I have a 2 year old home with well water. We use a whole house filter and the water is fine except ... A: 1. Have you checked raw water quality recently? Your raw water probably contains odor producing ... | |
| water project | 10/8/2009 |
| Q: as a class project i have been asked to visit a river and do a project as a follow up to the visit. ... A: You can have two types of studies. 1. Related to river flow and physical and chemical nature of ... | |
| water project | 10/8/2009 |
| Q: as a class project i have been asked to visit a river and do a project as a follow up to the visit. ... A: 1. I would like to know your class level. This is to suggest a method that you can easily handle. 2. ... | |
| orange water right out of the ground | 9/8/2009 |
| Q: I have a dug well that is 40ft into the ground. Since I moved in, 2yrs ago the water right out of ... A: Your problem relates the very source. It is not clear whether you have analyzed water and identified ... | |
| Swimming pool sanitation | 6/30/2009 |
| Q: I currently have a chlorine pool. I have been reading about pool maintenance and came across ... A: 1. DBP compounds formed are tested by Gas Liquid Chromatography. You have to approach a laboratory ... | |
| cooling tower circulating water | 6/25/2009 |
| Q: if the TDS of the circulation water of the cooling tower is 1500.shall we use this type of water in ... A: Could you please give some more details? 1. What about pH, alkalinity and hardness? 2. Are there ... | |
| Yellow well water | 6/12/2009 |
| Q: Recently, especially after a rain, my water is pale yellow. Had tested and is iron. Had the pump ... A: There are two reasons for well water to appear yellow. 1. Groundwater contains iron 2. Corroded iron ... | |
Water Quality
Answers by Expert:
Dr V N Sivasankara Pillai
Top Expert on this page
Expertise
Chemical quality, water treatment
Experience
24 years in teaching Chemistry of Water Treatment
Publications
Water Research, Polymer Internation, The Analyst, Talanta
Education/Credentials
Ph.D.
Awards and Honors
Cochin University (Retd)
Past/Present Clients
Chemical and water treatment industries
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