Purification of rain water from sand filter -- 2

You can purify rainwater from sand using the following two methods; 1. Slow Sand Filters 2. Rapid Sand Filters Both of the filters have different specifications, different filtration rates. Accept my bid in order to proceed and show how you will get a complete design for your project.

I'm civil engineer and I'm working in water supply and management institute and I have well known experience to purify water and sewer system.. Relevant Skills and Experience I'm working from last two years in this project..

Hello, I have specialised environmental engineering,and graduated with civil engineering degree. Rainwater harvesting is my special interest. I would like to work on it