Aerobic treatment of dairy wastewater with sequencing batch reactor systems

被引：0

作者：

Xiujin Li

Ruihong Zhang

机构：

[1] Department of Environmental Engineering,

[2] Beijing University of Chemical Technology,undefined

[3] 100029,undefined

[4] Beijing,undefined

[5] China,undefined

[6] Biological and Agricultural Engineering Department,undefined

[7] University of California at Davis,undefined

[8] CA 95616,undefined

[9] USA,undefined

来源：

Bioprocess and Biosystems Engineering | 2002年 / 25卷

关键词：

Aerobic dairy wastewater sequencing batch reactor;

D O I：

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学科分类号：

摘要：

Performances of single-stage and two-stage sequencing batch reactor (SBR) systems were investigated for treating dairy wastewater. A single-stage SBR system was tested with 10,000 mg/l chemical oxygen demand (COD) influent at three hydraulic retention times (HRTs) of 1, 2, and 3 days and 20,000 mg/l COD influent at four HRTs of 1, 2, 3, and 4 days. A 1-day HRT was found sufficient for treating 10,000-mg/l COD wastewater, with the removal efficiency of 80.2% COD, 63.4% total solids, 66.2% volatile solids, 75% total Kjeldahl nitrogen, and 38.3% total nitrogen from the liquid effluent. Two-day HRT was believed sufficient for treating 20,000-mg/l COD dairy wastewater if complete ammonia oxidation is not desired. However, 4-day HRT needs to be used for achieving complete ammonia oxidation. A two-stage system consisting of an SBR and a complete-mix biofilm reactor was capable of achieving complete ammonia oxidation and comparable carbon, solids, and nitrogen removal while using at least 1/3 less HRT as compared to the single SBR system.

引用

页码：103 / 109

页数：6