Ⅰ. Hotel structure
1. Chain hotel
Hong kong-based Mandarin Oriental traces its history from 1926 when its first owner, Hong kong Land, acquired the Gloucester Hotel in Hong Kong. In 1974, the group expressed its intention to expand into the rest of Asia with hotels that reflected the Hong Kong Mandarin Oriental's standard. The group went though various corporate changes. Eventually part o
mix. Structural and chemicals.
First, It has structural problems. As you can see the water flow direction, inlet locates downside and outlet locates upside.
Through this, we can know that axial impeller is not suitable. Also, because of wide width of tank, it has poor mixing.
Second, there is a problem with chemicals. PAC is injected with Cl2, so activation of Cl2 must be restricted.
Also,
Sewage that has been aerated
and agitated in order to promote the growth of beneficial microorganisms that break down organic matter.
The activated-sludge process is a
biological method of wastewater treat-ment that is performed by a variable and mixed community of microorganis-ms in an aerobic aquatic environment.
Purpose: to remove settleable organics and floating scum (gr
Ⅲ Flocculation
The purpose of flocculation is to uniformly mix coagulated water to produce either settleable or filterable floc and accelerate the rate of particle collisions, causing the agglomeration of electrolytically destabilized colloidal particles into settleable and filterable sizes.
Considerations of flocculation are:
1. Baffling to prevent of flow short-circuiting
2. Tapered
1. 설계 개요
1-1. 설계 배경
우리나라에서 발생하는 닭 깃털은 연간 4만여 톤 정도이며 거의 전부 토양에 매립하고 있다. 가금육 생성공정에서 발생되는 닭의 깃털은 케라틴(keratin)이라는 단백질 성분이 주를 이루고 있는데 일반적인 단백질 효소로 쉽게 분해되지 않기 때문에 농업 폐기물 문제의 하