Activated sludge is a term used both to refer to a widely utilized wastewater treatment process, and to the solid com-pounds which result from that process.
The activated sludge technique is one of the most commonly used methods for handling human waste in municipal settings around the world, and it can also be employed in the treatment of industrial wastewater.
The goal is to remov
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
Activated sludge is a term used both to refer to a widely utilized wastewater treatment process, and to the solid com-pounds which result from that process.
The activated sludge technique is one of the most commonly used methods for handling human waste in municipal settings around the world, and it can also be employed in the treatment of industrial wastewater.
The goal is to remov
제 1장 기술혁신의 개요
Ⅰ. 기술혁신의 정의
1. 기술변화에 대한 경제학적 관점
1) 고전주의 경제에서의 기술혁신 파악(아담 스미스, 마르크스)
고전경제학자들 중에서도 기술혁신이 경제적 진보를 가져온다는 논의를 전개한 사람들이 많다. 아담 스미스는 분업은 작업자들의 전문화된 발명을 유도
Ⅰ. 개요
1978년에 발생된 「러브 캐널」사건으로 과거에 투기된 유해 폐기물에 의해 오염된 토양의 정화 책임 문제를 유효하게 대처하기 위하여 1980년에 「포괄적 환경대책 보상책임법(CERCLA, 통칭 수퍼 펀드법)」이 제정되었고, 그 후 1986년에 이 법은 대폭 개정되어 「수퍼 펀드 수정 및 재수권법(SALA