SAND SPECIFICATIONS 1

[yulinios]

Hi There

Our Waste Water Treatment Plant recollect all drains from coal power plant incluiding septics, the treatment is coagulation, floculation, clarification and finally continuos sand filter, lately we have a lot of shut-downs of our sand filter, sand specification says 0.8 to 1.2 mm in size of grains, analisis of our sand is 30% less than 0.6 mm, another quality of sand was refilled into the filter, I would like to know what is the quality beside of the size of the sand? (this kind of sand filters is commonly known like Dynasand filter).

Bye

 

[misterd]

What about the uniformity coefficient (Cu)? It would indicate on average how uniform is your sand-. Have you tried with anthracite or another medium? What about the filtration rate? Are you sure that physical-chemical treatment is efficient?...

 

[yulinios]

Mistered
Thanks for your answer, we will change all the sand of the filter for another kind, answering your questions is that all parameters are inside of specifications, but I need to check CU too, it was really nice information to me.