공학 정수처리장(Water Treatment Plant) 설계 실습 (영문)
 [공학] 정수처리장(Water Treatment Plant) 설계 실습 (영문).pptx |
   
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목차
1. Flash Mix
The structural problem& the chemical
injection locations
Key concepts - In-Line
- Detention time < 1sec
-
Use mixer
2. Flocculation
Design impeller and tank type, diffuser
walls and baffle
Key concepts - Baffling (Diffuser wall)
- Tapered mixing
energy
(High to low to prevent floc breakage)
3.
Sedimentation
Design launder type, structure, sludge and scum model
Key
concepts –Long & Narrow
4. Filtration
Key concepts -
Constant level filtration
- Multi-media filtration
- Biologically active
filters
- Water & air backwash system
- Dual lateral underdrain
system
본문
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 biodegradable organics) -> GAC
In this
slide, I will explain 2 kinds of problems of original flash 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, using alum
may cause settling.
Alum lowered pHin localized area. To overcome this
problem, we need more alkali materials and it means lots of
cost.
본문내용
on locations
Key concepts - In-Line
- Detention
time < 1sec
- Use mixer
1. Flash Mix
Design impeller and tank type,
diffuser walls and baffle
Key concepts - Baffling (Diffuser wall)
-
Tapered mixing energy
(High to low to prevent floc breakage)
2.
Flocculation
Contents
Design launder type, structure, sludge and scum
model
Key concepts Long & Narrow
3. Sedimentation
Key concepts -
Constant level f |
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