This powerpoint presentation begins by providing a brief overview of the city of Houston, Texas, water utilities and its use of polymers for water coagulation,
flocculation, filtration, and for sludge dewatering
processes. Best value techniques used in
federal procurements are presented, along with the process of selecting a supplier, and testing polymers for performance and cost effectiveness. Presentation conclusions indicate the following: different
brands of the anionic and nonionic polymers
have little impact on flocculation and filtration
processes; the performance of cationic polymers
is related to coagulant dosages; with
higher coagulants dosages, the effects of the
polymers on solids and total organic carbon (TOC) removal are
relatively negligent; with a
low dose of the coagulant, the polymers make
much impact on water treatment processes; and, Houston has successfully
reduced the cationic polymer dosage up to 30%
at the SEWPP,
reduced primary coagulant polymer at EWPP
from 70 to 60 mg/L, and
maintained the water quality at the same level. Includes tables.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 1.2 MB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 17 |
| Published : | 11/01/2008 |
