1. Justifications of the proposed schemes -the structural problem& the chemical injection locations
2. Design impeller and tank type affecting energy efficiency, cost, flocculation size. Design Diffuser Walls and Baffles used for Minimizing Short Circuiting
3. Design launder type, structure, sludge and scum model
Filtration의 세번째 key concept 이유: (to promote readily biodegradabl
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
2-4. Song jeon Water treatment plant
- Korea’s first Advanced Water Treatment Process
- Living water supply (200,000 tons)
- Improved health , sanitation, culture level
- Local economy development
3. Factors of DAF efficiency
Ozone concentration
Temperature
Bubble Size
droplet size)이 있다고 결론내릴수 있다.중력분무탑(gravititationnal spray tower)의 경우 2g/(2000kg/)의 밀도를 가진 입자에 대하여 Langmuir 근사법과 위그림 5-18을 이용한 결과를 그림5-19에 나타내었다.
예를들어,액적의 직경에 600이하이면, 집진율이 급속히 감소하며, 액적의 직경에 클수록 충돌효과가 증가한다.