Improving biodegradability of naphthalene refinery wastewater by preozonation

被引：10

作者：

Shin, HS

Lim, JL

机构：

[1] Dept. of Civil Engineering, Korea Advanced Institute of Science and Technology, Yusong-Gu, Taejon 305-701, 373-1, Kusong-dong

来源：

JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-ENVIRONMENTAL SCIENCE AND ENGINEERING & TOXIC AND HAZARDOUS SUBSTANCE CONTROL | 1996年 / 31卷 / 05期

关键词：

ozonation; naphthalene sulfonic acid (NSA); BODS/COD; biodegradability;

D O I：

10.1080/10934529609376403

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Ozone pretreatment studies of naphthalene sulfonic acid(NSA) were conducted to evaluate the effects of ozonation on the biodegradability of the oxidation products. Ozonation of NSA was carried out under different condition of initial concentration, pH, and ozone dose. Depending upon the initial concentration of NSA a 20-84% reduction of COD and 7-50% reduction of TOC lead to biodegradable products(BOD5/COD = 0.27-0.48). While biodegradability increased depending upon COD reduction, changes of pH and ozone dose had a few effects on improvement of biodegradability. The treatment efficiency of naphthalene refinery wastewater containing NSA was evaluated with and without preozonation in the activated sludge system. Considering the result of earlier ozonation, preozonation conditions were determined. The results showed that preozonation significantly improved treatment efficiency.

引用

页码：1009 / 1024

页数：16

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