英文關鍵字
acid
activated
aeration
aerator
air
alkali
alternate
anaerobic
anoxic
ball
biological
bubbles
bubbling
capacity
chloride
cleaning
closes
component
contamination
decomposition
drain
employee
engineer
facilities
faucet
feed
filtration
leakage
leaktightness
level
membrane
oil
open
overlap
pipe
pipes
plant
plastic
polypropylene
polyvinyl
polyvinylchloride
processing
pump
purification
pvc
reaction
reactor
sensor
sewage
shop
sludge
sorbent
stops
supply
supplying
tank
tap
treatment
turn
ultrafiltration
valve
valves
water
worker