Pl. share full lab report for both physical & chemical. Personally i prefer to even have a biological test too. Your water doesn't seem to be that bad with TDS 1200ppm.
Good Morning. In addition to the excellent responses below for obtaining a water analysis, many parts of India have high silica content. Include silica in your water testing.
Warmest regards,
FOR THE BEST TASTE IN LIFE &
37 Years Pure Excellence
...into another Quarter Century re-inventing the water industry !
clogging of pipe is due deposition of the calcium and magnesium salt inside the wall of the pipe. To avoid this use water softner method i.e use of ion exchange resin
Hi Moorthy!, Nice to meet you. Are you sure the clogging is due to TDS? Generally the clogging by TDS is due to the crystallization of calcium and magnesium salts in the internal walls of pipes and equipment. If that is the problem the best easiest and cheapest way to overcome it is by installing a water softener (with an ion exchange resin) before the water entrance to the piping you want to protect. But before that, you have to be sure that the clogging is not because of suspended solids because to use water softener method, the water must be perfectly clear with very low TSS, and if you are adding chlorine to the water you must do it after the water pass the resin. Another option is reverse osmosis but is much more expensive and you waste a lot of useful water in the process. I think use of chemicals is not a safe option at all, as you told they are using this water for day to day use. To determine the size of the water softener you have to analyze the water in order to know the real composition of the TDS and mostly the real amount of calcium and magnesium.
TDS = Total Dissolved Solids , and it does not say anything about the perticipation tendency or scaling formation. So, you have to find the water analysis in order to verify the reason of scaling formation.
Usually (as LSI index informs) scaling is due to high Calcium and Magnesium concentration (water hardness). These ion salts are forming unsoluble salts which perticipate when the water temperature rises (during summer mainly).
Concerning that, in order to avoid pipe clogging, you could install the water pipe lines much deeper into the ground, where the temperature is more stable and lower .
Clogging of pipes does not result from the TDS. You need to check the real reasons, namely the turbidity. With such high TDS value water must be desalinated before circulation.
The best way to determine whether the TDS have a tendency to precipitate inside the pipeline is by calculating the so-called LANGELIER's INDEX. If this index is positive then the water has the tendency to precipitate.
In order to calculate this index you need to have a complete chemical analysis. There are sites in the web that can calculate the index automatically provided you have input the required values.
....in addition to what already told; temperature is another important factor to predict aggressive or scaling behaviour of the water, along with - as told- a complete water analysis (TH, M-alk, SO4, Cl, pH..). TSS value (along with TDS) could help: sometimes settling of TSS is caused by weak hydraulic design and TSS settling confused with TDS deposition... but this is another story!
Hi Moorthy, It depends on the actual ions making up the TDS. It sounds as if their water is hard (has a high calcium and magnesium content). During the treatment process the water should be stabilised (i.e. ensure the Langelier index is correct to give a pHs that is just slightly over-saturated). This is done through the use of lime and/or carbon dioxide or another acid. If the water is from a borehole with no prior treatment, they can test the hardness and if necessary adjust the pH to make it less scale forming. Using plastic pipes also helps to reduce scaling, or regular flushes with an acidic water. If the clogging is from gypsum scale (calcium sulphate), this is more difficult to prevent and may require either a reduction in the calcium or the sulphate levels. Best wishes in dealing with this.
However, if the high TDS water has a high pH, then depending on the constituency of the salts, some may precipitate out and attach to the inside of the pipe.
One way to counter this is to raise the pH of the water continuously with an acid injection and that's costly!
Another less effective method is to dose the pipe with hydrochloric acid solution overnight and "pig" the pipe next day, then flush. This is not totally effective, and needs to be done regularly.
Neither option is pleasant!
I know of a golf course which uses recycled water with high TDS and high pH. Its got to the point of abandoning the irrigation system as its totally blocked from salt deposits. The cost to acid inject continuously is too high. Total disaster.
The right approach is to determine the composition of water. TDS is not that high. But it may be having ions that are exceeding the solubility limit and forming scale inside the pipes.
Analyze the solid scale sample, it also guide you to find out which scale is formed and choose the proper treatment.