Water Treatment Plant Operation Volume 2 - CH 5 Membrane Treatment
Processes
, Who or what performs a clean- An automated system inside the pipes and other equipment
in-place process?
What can happen to an ED unit There may be chemical fouling due to scaling
if too many ion constituents
are present?
What are pumps used for in Circulating water through the stack
the ED process?
Estimate the ability of a 96%
reverse osmosis plant to
reject minerals by
calculating the mineral
rejection as a percent. The
feedwater contains 2,400
milligrams per liter (mg/L)
TDS and the product water
TDS is 100 mg/L.
How will the water flux react It will decrease
if the feedwater temperature
decreases?
What, in addition to Coagulants
constituents in the water and
membrane materials,
creates complex interactions
during source water
pretreatment and effects
membrane performance
unpredictably?
What should an operator do Inspect the intake structure and security
daily to ensure a healthy and
efficient membrane filtration
plant?
Brine disposal facilities, SCADA system
product water quality, and
mineral concentration of
feedwater are all factors in the
selection of what plant
process?
What term best describes the Product water
demineralized water produced
from the RO process?
What are the characteristics of Solids accumulate on the membrane and are removed during
a dead-end filtration system? backwash
How long does it typically 10-20 seconds
take water to pass between
the membranes of a single
stack in an ED system?
Processes
, Who or what performs a clean- An automated system inside the pipes and other equipment
in-place process?
What can happen to an ED unit There may be chemical fouling due to scaling
if too many ion constituents
are present?
What are pumps used for in Circulating water through the stack
the ED process?
Estimate the ability of a 96%
reverse osmosis plant to
reject minerals by
calculating the mineral
rejection as a percent. The
feedwater contains 2,400
milligrams per liter (mg/L)
TDS and the product water
TDS is 100 mg/L.
How will the water flux react It will decrease
if the feedwater temperature
decreases?
What, in addition to Coagulants
constituents in the water and
membrane materials,
creates complex interactions
during source water
pretreatment and effects
membrane performance
unpredictably?
What should an operator do Inspect the intake structure and security
daily to ensure a healthy and
efficient membrane filtration
plant?
Brine disposal facilities, SCADA system
product water quality, and
mineral concentration of
feedwater are all factors in the
selection of what plant
process?
What term best describes the Product water
demineralized water produced
from the RO process?
What are the characteristics of Solids accumulate on the membrane and are removed during
a dead-end filtration system? backwash
How long does it typically 10-20 seconds
take water to pass between
the membranes of a single
stack in an ED system?
