基于活性污泥模型的废水特性中化学需氧量（COD）的分级

[Activated sludge model based COD fractionation in wastewater characterization].

作者信息

Zhou Zhen, Wu Zhi-Chao, Wang Zhi-Wei, Tang Shu-Juan, Gu Guo-Wei

机构信息

School of Energy and Environmental Engineering, Shanghai University of Electric Power, Shanghai 200090, China.

出版信息

Huan Jing Ke Xue. 2010 Jun;31(6):1478-82.

PMID:20698259

Abstract

The successful application of activated sludge model (ASM) in wastewater treatment plant mainly depends on the correctness of wastewater fractionation. Based on three batch oxygen uptake rate (OUR) tests, a COD fractionation protocol and the corresponding Matlab program were developed to aid the standardization of COD fractionation in wastewater. COD fractionation results of two wastewater treatment plants (WWTP) in Shanghai show that COD in wastewater of the Quyang WWTP is composed of 8.1% +/- 1.6% readily biodegradable COD (S(s)), 6.3% +/- 2.2% soluble inert COD (S(I)), 45.5% +/- 3.5% slowly biodegradable COD (X(S)), 31.1% +/- 2.1% particulate inert COD (X(I)) and 9.0% +/- 1.1% heterotrophic biomass (X(H)), and those fractions in wastewater of the Bailonggang WWTP are 11.1% +/- 2.2%, 9.9% +/- 2.0%, 38.9% +/- 10.7%, 23.3% +/- 9.8% and 16.9% +/- 1.8%, respectively. Compared to the Quyang WWTP, wastewater of the Bailonggang WWTP showed lower X(S) and X(I) contents in COD, but greatly higher X(H)/COD value, indicating that long pipeline transportation could significantly influence the concentration of COD fractions.

摘要

活性污泥模型（ASM）在污水处理厂中的成功应用主要取决于废水组分划分的正确性。基于三次间歇式耗氧速率（OUR）测试，开发了一种化学需氧量（COD）组分划分方案及相应的Matlab程序，以助力废水中COD组分划分的标准化。上海两座污水处理厂（WWTP）的COD组分划分结果表明，曲阳污水处理厂废水中的COD由8.1%±1.6%的易生物降解COD（S(s)）、6.3%±2.2%的可溶性惰性COD（S(I)）、45.5%±3.5%的缓慢生物降解COD（X(S)）、31.1%±2.1%的颗粒态惰性COD（X(I)）和9.0%±1.1%的异养生物量（X(H)）组成，而白龙港污水处理厂废水中这些组分的占比分别为11.1%±2.2%、9.9%±2.0%、38.9%±10.7%、23.3%±9.8%和16.9%±1.8%。与曲阳污水处理厂相比，白龙港污水处理厂废水中COD的X(S)和X(I)含量较低，但X(H)/COD值显著更高，这表明长距离管道输送会对COD组分的浓度产生显著影响。