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특허 상세정보

Methods for reducing nitrate demands in the reduction of dissolved and/or atmospheric sulfides in wastewater

특허상세정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) C02F-003/00   
미국특허분류(USC) 210/610; 210/739; 210/743
출원번호 US-0700381 (2003-11-04)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 7  인용 특허 : 41
초록

A method and apparatus for treating wastewater streams by adding, either separately or as a mixture, a nitrate containing compound and an alkaline material in an amount sufficient to achieve a lower concentration of atmospheric hydrogen sulfide and dissolved sulfides downstream of the addition as compared to the atmospheric hydrogen sulfide and dissolved sulfides present in the wastewater stream prior to the addition. By adding alkaline material in addition to a nitrate containing compounds, the amount of nitrate containing compound added can be reduced ...

대표
청구항

What is claimed is: 1. A method of treating a wastewater stream, comprising acts of: (a) adding a nitrate-containing compound at a first position in the wastewater stream; (b) adding an alkaline material at a second position in the wastewater stream; (c) sensing a level of at least one of atmospheric hydrogen sulfide, dissolved sulfide, and residual nitrate in the wastewater stream downstream of the first and second positions; and (d) adjusting an amount of at least one of the nitrate-containing compound and the alkaline material added to the wastewater...

이 특허에 인용된 특허 (41)

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