High TDS Water

[Yogendra Mohan Chaudhary]

Hi,

Can anyone tell me about how to reduce the high TDS (12000 PPM) water from the final discharge of ETP.

Thanks

[Jaideep]

Yogendra, is this waste water or from some other source? Typically you will need to use membrane based RO process.However RO also ggenerates a small reject stream with very high TDS concentration. This also needs to be handled differently as per local requirements. Trust this helps. Dr JD.

[Dibya Ranjan Dash]

Yes. RO seems to be only option. But RO reject has to be dealt with separatly

[Rajesh Kumar Garg]

Since its from ETP you have to mention the source of generation, qnty generated everyday, weather the treated ETP is to be reused or its discharged, coz' without knowing other parameters like BOD, COD, silica, etc we cannot just say RO system is the only solution, RO system maybe a part of the process.

Stand to be corrected.

[Sanjay Namdeorao Gulhane]

Use RO with pump pressure 600 psi and use forced evaporation followed by solar evaporation for reject. I had designed and using this system succesfully for one of our client having TDS 7000 to 14000 mg/l.

[Sumeet Mohanty]

Well what is the composition of the TDS? And the flow rate? We have installed a non-ro, non-mee based solution for 40kld in chennai. 30000 ppm TDS. Mail me for additional details at [e-mail]

[Durga venkata prasad.G]

Kindly give all the parameters(Ph,tds,tss,oil and grees bod,cod) then only we get clear answer you only mentioned TDS based on this no body can tell  exact answer.

Regards,

GDVPrasad

[Dr. PAWAN KR. SINGH]

All above mention responses are solutions for the mention problem.........but before reach to any solution it will be better to analyze the possibility of the following..

1. is this high TDS water can be diluted by other emanating waste water (domestic / other) from idustry

2. is  this high TDS water can be utilized in other process

3. Degree of dilution in other process use

4. possibility to send the same in cooling tower reservoir

5. and many other way to.... this help you adopt suitable capacity of RO / Volume

it is not always necessary to install RO unit for entire high TD water if we can reduce the volume of High TDS water..it will help in cost reduction/ life of RO and many other benefits

[Sireesha Patnaik]

Can any one guide me. What with domestic water with TDS 440? I was using UV and UF Protection, though there is still problem with bacteria leading to health issues! 

[Dr. PAWAN KR. SINGH]

Mam

as we know the problem associated with UV is regeneration of bacteria and efficiency depends up on clarity of water, it may be the possible cause of health issues.

the other solution you may adopt use Chlorine disinfection (hypo chlorate / other salts) followed by ACF and then UF.

i am sure you will get desire results. i also mention that the TDS is not higher because the limit is 500ppm...it is suitable for drinking.(UF can be remove).......now its up to you what TDS level you desired..

[Sandeep Tomar]

UV and UF is the good combination to avoid bacteria & viruses

1. UV will fail if water is turbid & life/make of UV bulb is important

2. UF may fail if regularly chlorinated water is fed ( or contain other oxidizing agents) which is the case with municipal supply. This happens because ACF will exhaust faster in chlorinated water.

As mentioned by Dr Pawan following combination is good for 440 TDS

Micron Cartridge filter (MCF)--->Activated carbon filter(ACF)----> UF----> UV---. end use. 

Do not store water for longer times instead fill new container for usages. For few hours storage, on safer side copper jug can be used which minimizes regeneration of bacteria. Do change the MCF regularly  if raw water is contaminated & ACF if  water is chlorinated.

Do check & clean the storage vessels as it is the most important and neglected factor in water treatment and usage

[Rajesh Kumar Garg]

Since its for domestic use pl. go for RO system, further TDS 440ppm is not an issue. RO sys wd give a better life with low maintenance with only drawback being reject water being generated. The reject water TDS will be approx 650 - 700ppm & this can be reused for other domestic use. 

To prevent scales formation with both feed water & with reject water use, you can use Electromagnetic Water Conditioner (EWC), this wd prevent scale formation & wd remove existing scales formed. It is very much cheaper than softener with almost nil maintenance. If interested mail us & we wd send you product brochure & application pics.

Email: [e-mail]

Sireesha Patnaik said:

Can any one guide me. What with domestic water with TDS 440? I was using UV and UF Protection, though there is still problem with bacteria leading to health issues! 

[DAMODAR]

pl clear other data like ph, color of water, bod, cod  etc ....

we have a project of zero discharge,,, i think it will useful to you