Has the inlet SS ...
Published by Jose Martinez, Director Técnico y Administrador en A-was Depuración y Tratamiento de Aguas, S.L.
Has the inlet SS concentration changed?
You must open the filter and take a look about the sand. Microbiological developments can foul the sand. In this case you must make a strong backwash with hipoclorite to remove the biofilm.
In some cases the sand acts like a nucleation agent and a mineral scale could be seen.
1 Comment
I suppose this can be the potential reason of Filter clogging.
Actually, because of algae mass pH of raw water (river water) has increased to a large (pH About 8.2-8.4). Coagulant PAC (Poly Aluminium Chloride) does not work efficiently in this pH range. Nor high Chlorination was giving good results.
So, we Applied Alum as Coagulant with high dose.
However, turbidity of water is between 20-26 NTU Low.
Now, it is working well better than before.
Thanks for your comments Sir
Regards