Sediment in water not only makes it unpleasant to drink or to use; sediment also harbors potentially dangerous microorganisms and protects them from the action of chlorine or other disinfectants that may be added to the water.
The capabilities of the coagulation-filtration process for virus
removal were evaluated by constructing and operating a one step,
2 gpm coagulation-filtration pilot plant. Multi-media filters were
used without pre-coagulation and sedimentation. A T2 bacteriophage
was used as the indicator organism. The plant was operated under
a variety of conditions in...
Fishery biologists and watershed management specialists have recently begun to investigate the pollutional threat posed by organic debris left in or near the forest watercourses. Oxygen content in some streams has fallen below the limits required for fish survival. The biochemical oxygen demand exerted by the debris and the reaeration...
The cleanliness of water is a major issue with regards to humanity's continued survival. The chlorination and chloro-amination of water is essential to the creation of microbiologically clean water. However these processes also give rise to oxidative byproducts such as nitrosamines. In particular, due to its high toxicity, N-Nitrosodimethylamine (NDMA)...
A study was conducted to determine the chemical nature and
the biological treatability of log pond water. Various analyses including
total solids, volatile solids, suspended solids, dissolved
oxygen, pH, COD, BOD₅, BOD₂₀, total Kjeldahl nitrogen, nitrate
nitrogen, phosphate, and PBI were performed on water samples
from each of the four...
The methane monooxygenase (MMO) enzyme, used by methylotrophs
to oxidize methane, has been shown to possess quite broad substrate
specificity, being able to oxidize many organic compounds including
n-alkanes, n-alkenes, ethers, and aromatic, alicyclic, and
heterocyclic compounds. In this research, it was sought to
determine whether a gas-permeable-membrane-supported (GPMS) biofilm...
The effectiveness of tangential flow filtration (TFF) for
recovery of infectious hematopoietic necrosis virus (IHNV) and
infectious pancreatic necrosis virus (IPNV) from large volumes of
water was evaluated. In laboratory studies, virus recovery from
IHNV-seeded water following concentration by TFF was approximately
13%. However, addition of 0.1 and 1% FBS...