This powerpoint presentation outlines the concentrate management process of zero liquid discharge (ZLD). Topics outlined include: established ZLD technologies; energy required for water phase changes; energy required for desalination; evaporation ponds can be expensive; technical approach; sparingly soluble salts; processes evaluated for concentrate treatment; summary of precipitation; effect of seeding; Fluidized Bed Crystallizer (Crystalactor); advantages of crystallization; water sources tested; research approach; Fluidized Bed Crystallizer vs. Chemical
Softening; Barium was removed in proportion to calcium
removal; high pH required for silica removal; Silica removed with precipitation of Mg(OH)<sub>2</sub>; Silica effectively removed with alum or
sodium aluminate; comparison of costs and energy consumption; treatment cost $/kgal concentrate recovered; energy reduction; and, comparison of energy consumption by
process.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 2.8 MB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 34 |
| Published : | 06/01/2007 |
