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특허 상세정보

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Controlled denitrification process and system

특허상세정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) C02F-003/30   
미국특허분류(USC) 210/605 ; 210/614 ; 210/143 ; 210/150
출원번호 US-0263656 (1994-06-20)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 78  인용 특허 : 0
초록

A process and system for the reduction of nitrate to nitrogen in a fluid medium. Anaerobic bacteria fed by a carbon source are used for nitrate reduction. The addition rate of the carbon source and process residence time are controlled using the oxidation-reduction potential of the fluid medium to achieve a desired level of nitrate reduction. An industrial process control system may be used to monitor inputs and control outputs. A column of suspended beads may be used as the anaerobic bacterial bed for denitrification.

대표
청구항
▼

A process for the reduction of nitrate to nitrogen in a fluid medium, comprising the steps of: providing an anaerobic or partially anaerobic fluid medium containing nitrate and having a variable oxidation-reduction potential; exposing the fluid medium to anaerobic bacteria for a process residence time; adding a fluid-miscible carbon source to the fluid medium whereby the anaerobic bacteria reduces at least some of the nitrate to nitrogen; measuring an oxidation-reduction potential in the fluid medium downstream from the anaerobic bacteria; and controllin...

이 특허를 인용한 특허 피인용횟수: 78

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