기관의장 설계 편
A. 기장설계의 정의
조선소에서 하는 선박의 기관부(機關部) 관계의 설계와 공작. 기관의장 설계라고 하면 일반적으로 배관설계를 말하는 것인다. 구체적으로 기관배관SYSTEM, 기관배관, 기장철의장, 기장 축타 설계로 구분이 된다.
B. 기장설계 업무
기장설계는 “기관실에 대한 의
sewage)란 오수(汚水, sanitary sewage), 우수(雨水, storm sewage) 및 공장폐수(工場廢水, industrial waste) 등으로 구성된다. 하수도(下水道, sewerage)는 오수, 우수를 배제 또는 처리하기 위하여 설치되는 도관(道管), 기타 공작물과 시설의 총체를 말한다. 여기서 도관이란 하수관거(sewer)를, 기타의 공작물과 시설이란
Digestion tank production gas is a biogas produced by artificial anaerobic digestion of organic wastes with bacteria in the digestion tank. This can be divided into mergence gas which produce bio-gas by putting more than two of them together, among the organic waste gas, waste water gas, livestock· sewage gas, sewage sludge gas, depending on the type of organic waste. Because they are artificial
Nowadays, ‘eutrophication’ presents as one of the most serious ecological problems of open water sources such as lakes, oceans and reservoirs. It can be occurs naturally over centuries as lakes age and filled in with sediments, or acid rain. However, it has been rapidly increasing caused by human activities like fertilizers, municipal sewage, and wastewater from the factory. The Baltic Sea is
As in many parts of the world, pollution is a serious issue. Many early industrial projects were built quickly, without concern for the environment. Polluted air and water are some of the effects of these projects. Also, about 80% of all Koreans live in cities. As a result, there is great overcrowding of both people and cars. Services like sewage and public transportation are often overwhelmed, w