Award Date

1-1-1994

Degree Type

Thesis

Degree Name

Master of Science (MS)

Department

Civil and Environmental Engineering

Number of Pages

135

Abstract

Wastewater often creates nuisance odors. Effectiveness of Calcium Nitrate (trade name Bioxide) to control odors was investigated in the collection system of Clark County Sanitation District over a three month period in the summer of 1993. Bioxide feed stations were set up on the nine sewer lines which exhibited highest sulfide concentrations, several miles from the treatment plant. Total sulfide, free sulfide, residual nitrate concentrations, pH and temperature were measured at manholes on each sewer line before reaching the treatment plant and also at the headworks in the treatment plant at various times of the day. Sulfide concentrations were generally reduced to less than 0.1 ppm in all Bioxide-treated sewer lines and also at the headworks. Odor complaint frequency went down with Bioxide treatment. Bioxide is non-hazardous and easier to handle when compared to other chemical oxidizers used to control H{dollar}\sb2{dollar}S.

Keywords

Calcium Control; Nitrate; Odor; Sewers

Controlled Subject

Civil engineering; Municipal engineering; Sanitary engineering

File Format

pdf

File Size

4321.28 KB

Degree Grantor

University of Nevada, Las Vegas

Language

English

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