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
Grit chamber
Definition
Remove the grit and inorganic matter over 0.2mm in waste water
[ Function ]
Prevent abrasiona and damage of machine equipment
Prevent Piping system blockage
Prevent adverse effect by deposits
Gravity type chamber
Using the gravity and velocity of waste water
Take the deposits to sludge facility, using sand pump
Aeration type chamber
Using centri
Abstract
Bioethanol is one of the alternative sources of oil resources which received attention with biodiesel. Many countries produce bioethanol from food sources such as corn and sugarcane, but it causes food-energy conflicts and farmland problem. So it needs to focus on new biomass which is sustainable, renewable, cost-effective and do not occurred any conflicts. Algae are one of the bioma
Shortcomings of current process
1. Activated carbon adsorption
2. Direct combustion
3. Catalytic oxidation
4. Ozone oxidation
1. Inconsistent efficiency
Efficiency sharply drops when it works for long time.
It happens as nutrients for microorganisms are insufficient.
2. Unequal growth of microorganisms
Efficiency decreases, hard to handle when factors change suddenly
preservation technologies. Various modern technologies are applied to inhibit the growth of micro-organisms in food product as various food-spoilage micro-organisms are exit. Consequently, the techniques are so complicated and diverse to state in one paragraph. This report divides the methods into several categories, physical, biological, and chemical, and introduces each technology briefly.
I. What is drug
When an individual persists in use of alcohol or other drugs despite problems related to use of the substance, substance dependence may be diagnosed. Compulsive and repetitive use may result in tolerance to the effect of the drug and withdrawal symptoms when use is reduced or stopped. This, along with Substance Abuse is considered Substance Use Disorders.
II. Varieties of
Ⅰ. 개요
경제협력개발기구(Organization for Economic Cooperation and Development, OECD)는 세계경제의 지속적인 성장과 복지증진을 목표로 1961년 9월에 설립된 국제기구이다. 이 기구는 회원국들 상호간의 관심분야인 무역, 통화, 환경, 개발, 과학기술 등에 대하여 정부차원의 토의, 협조 및 조정역할을 수행하고
The Importance of notes
노트를 하는 주요 이유는 우리가 들은 것을 글로 기록하여 기억하기 쉽게 하는 위함이다.
우리는 이야기나 강좌를 들으면 누구나 내용을 쉽게 잊어 버린다. 여러 가지 연구들이 우리의 짧은 기억력에 대해서 설명하고 뒷받침 해왔다.
P.235의 인간의 짧은 기억력에 대한 사례
- 한
1. 들어가는 말
일전에 우리나라 60년대 30대 기업과 90년대 초반의 30대 기업을 비교해 보았을 때, 과연 얼마의 기업이 오늘날까지 그 명맥을 유지하고 있을 것 같냐고 질문을 받은 적이 있다. 대다수의 사람들이 아무리 못해도 5개 정도는 살아 남았을 것이라고 대답했지만, 실제로는 하나도 없다는 것