dear sharma

Spiral wound means you are going to treat waste water through R.O spiral wound membrane. as you are going to treat so before R.O you have to install Ultrafiltration unit before it. No one can design spiral wound membrane for waste water only knowing about TDS. you have to provide SDI, either any oxidizing agent present in water or not etc.

Dear Muqeet!!

Nice to hear back from you!

I know feed flow rate, initial and final TDS I wish to design the Microfilter in spiral wound module I will be thankful if you can suggest some book or literature 

Dear Shailendra,

The following link contains a publication which describes a design of Spiral-Wound Modules.

http://infohouse.p2ric.org/ref/39/38864.pdf

Hoping this will be helpful,

Rafik

Dear Dr Rafik,

Thanks for your help about. 

The link you suggested has little bit information about the design strategies I will be thankful if you can help in providing little bit more information and help.

Thanks in advances.