Ⅰ.설계의 이론적 배경
정수 처리 흐름도
취수장(한강) → (전처리) → 약품투입실 → 혼화지 → 응집지 → 침전지 → 여과지 → 염소 투입실 → 정수지 → 배수지 → 가정급수
1.급속혼화지(Rapid Mixing basins)
물속에 넣은 약품과 물이 잘 섞이도록 응집제를 섞는 과정.
정수장에서는 보통 알류미늄계
Rapid Expansion of Supercritical Solution), SAS(Supercritical Anti Solvent) 등이 있다.
1) RESS(Rapid Expansion of Supercritical Solution)
RESS는 입자로 제조할 물질을 초임계유체에 용해시킨 후 미세한 노즐을 통하여 급속히 팽창시킨다<그림3>. 이때, 초임계유체가 gas로 되는 과정에서 용질이 빠른 시간에 과포화 되고 용해되어
Rapid Growth
“The middle-aged mother buys clothes at Zara because they are cheap, while her dauthter aged in the 20s buys Zara because it is fashionable.” -By Devanhshu Dutta-
Among many competitors, Zara’s products and brand image are characterized by high-fashion and low-medium price. (Exhibit 3) Generally, these two characteristics couldn’t be easily achieved at the same time. How
rapidly, so that countries are very attractive market. But that market encountered control already to some local company. So Google has to gain competitive advantage to beat local brand in that market. Second one is economic recession. From 2007, world economy fell in to the deep slackness because of the Subprime mortgage crisis. At this event was joined together with Google’s revenue declined.