salt and organic rejections
Pressure compaction resistance
Wider operating temperature range (0 C–45 C) and pH range (from 1 to 11)
Higher stability to biological attack
Chlorine and fouling susceptibility
The key point of the RO membrane
Flux
Salt rejection
※ Problems
- fouling
- permeability
- energy consumption
Fouling
Main cause
- algae, microorganism, cationic
salt?
- Respect your granma!
You my father?
What about Dad?
You my mother now?
Go to school!
It burned down.
Burned down! Savages!
Start that way and soon
youll skip temple!
- Granma!
- What?
I didnt burn the school!
And you dont go to temple!
You win! I surrender!
If everyone ran from an argument,
thered be a stampede, already!
But wed all be going
the same way!
Mazeltov!
You talkin to me?
You t
Q=SA(ΔP – Δπ)
Q:permeate flow, S:wet area, A:membrane coeffi.
NA=B(Cfc-Cp)
NA:salt passage, B:diffusion coefficient
Cfc:feedconcentrate-
ave concentration,
Cp:permeate-
concentration
RO 시스템은 시간이 지나면서
운전 성능과 membrane의 성능이 조금씩 저하된다
1) Scaling
2) Fouling
3) chemical attack
일반적으로 me
saltpeter (sodium nitrate, or NaNO3), which is mined in South American deserts. Around the turn of the twentieth century, Sir William Crookes predicted that the world would soon run short of Chile saltpeter. Scientists feared that without nitrogen-based fertilizers to increase crop yields, the growing world population would starve. Thus began the search for an alternative source of ammonia. Altho
attacked by a creature we
cant quite see, due to fast camera cuts. The creature and human
roll around in combat, the creature slashing the man until he kills him.
The mans friend appears and stabs the creature with something
(looks like a stake, maybe his comrades torch?) and the creature
disappears into the darkness of the cave. The man looks down at his
friends lifeless form, then starts to loo