andredd
Chemical
- Apr 21, 2010
- 11
hello everybody...!
i m asked by a client to recover with RO 80% of a water coming from DMF backwash + demi plant regeneration effluents (after neutralization). This water has a lot of sulphates (5000 ppm) and calcium (1250 ppm), some magnesium (550 ppm) and barium (0,5 ppm).
The RO design guy said that scaling is a big issue and that recovery can not be achieved even using the best antiscalant in the RO membranes. My question is: if the solubility constants Kps are so exceeded, so there is tendency for "self - precipitation" would it not be possible to precipitate (also adding chemicals etc) in same pre-treatment TSS clarifier the calcium sulphates, barium sulphates and then going to RO plant? any of you experienced this? or is it theory hard to put in practice? thanks a lot since now ! have a nice day !
Andrea
i m asked by a client to recover with RO 80% of a water coming from DMF backwash + demi plant regeneration effluents (after neutralization). This water has a lot of sulphates (5000 ppm) and calcium (1250 ppm), some magnesium (550 ppm) and barium (0,5 ppm).
The RO design guy said that scaling is a big issue and that recovery can not be achieved even using the best antiscalant in the RO membranes. My question is: if the solubility constants Kps are so exceeded, so there is tendency for "self - precipitation" would it not be possible to precipitate (also adding chemicals etc) in same pre-treatment TSS clarifier the calcium sulphates, barium sulphates and then going to RO plant? any of you experienced this? or is it theory hard to put in practice? thanks a lot since now ! have a nice day !
Andrea
