If possible, remove the trickling
filters for cleaning.
In the design of south Tehran sewerage treatment plant efforts have been made to design nitrifying trickling
filter to the extent that oxygen transfer through the media be maximum Qiao, et al, , to control formation of biofilm patchiness by complete carbon removal through aeration tank, to provide ammonia to even out diurnal ammonia loads by returning supernatant from sludge storage Chang, at al, [4,6,7], and controlling the levels of nuisance organisms by the following processes:
Existing civil works in the form of the old trickling
filters' superstructures were rejuvenated to house the new generation treatment process.
The outlet of the trickling
filters will also be transferred into the inlet channels of the aeration tanks.
Aid was trickling
in Thursday to Indonesia's Mentawai islands three days after a powerful earthquake-triggered tsunami devastated the area leaving over 300 dead, officials said.
"A little later the blood dried but it soon started trickling
down from the hands and heart of another portrait."
The floor was covered with plain black carpet, four speakers were placed in the gallery's ceiling corners, and an antiquated but functioning flip-dot signboard was inset in the wall, an apparently random scattering of yellow dots slowly trickling
down its surface.
It would still have been a very good article if you had used "sulfuric acid" instead of "odorless hydrogen sulfate" and admitted that the process still required a little alkali to neutralize this waste stream that is "carried away by water trickling
over the foam."
The only thing that's actually trickling
down--and will become a torrent in the future--is the pain of severe cuts in social services that working people and the poor rely on.
Third quarter earnings--which were trickling
in as of last week--were mainly down.
At times, the river does not appear to be much more than a stream, often trickling
along a concrete path.
But as the absentee votes began trickling
in, the tide slowly but surely began to turn.