This slide presentation outlines a project to treat waste filter backwash and sedimentation/coagulation sludges to meet NPDES permit limits at one of Detroit's water treatment plants (WTPs). Project drivers included:
need to increase state approved plant
capacity rating from 300 mgd to 400
mgd; change to Modified Direct Filtration
Operation;
MDEQ concerns over recycle of
contaminants through waste backwash water; and,
improved raw water quality by
eliminating recycled filter backwash
water. Design challenges included:
meet DWSD's requirements for fail safe
operation/redundancy;
design and construct a low maintenance
facility that essentially runs itself, so staff can
focus more on treating drinking water than
wastewater; and,
regulatory agency reviewing project as a
drinking water facility rather than the
wastewater project. Beneficial features included:
reduced solids loading to
sedimentation basins resulting in less
material to manually clean (O&M Cost
Savings);
simple, easy to operate system;
redundancy; and,
fail safe operation. Includes figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 10 MB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 24 |
| Published : | 06/01/2006 |
