Zhang Dai-jun, Ai Hai-nan, Lu Pei-li, Long Teng-rui
Department of Environmental Science, Chongqing University, Chongqing 400030, China.
Huan Jing Ke Xue. 2009 Aug 15;30(8):2293-6.
Respirometry was made using wastewater and activated sludge from a WWTP of Chongqing through self-developed hybrid respirometer. And complete oxygen uptake rate (OUR) curves containing OUR of biodegradation process of RBCOD and SBCOD and endogenous process were obtained. A new method based on respirometry was proposed to characterize RBCOD and SBCOD in wastewater simultaneously, in which hydrolysis model was selected to analyze OUR curves of SBCOD according to the two-phases nature of exogenous OUR and trend-test method for endogens OUR. Compared with the traditional OUR-stages method, the new method reduces the man-made error and improves the accuracy of wastewater COD fractions characterization.
采用自行研制的混合式呼吸仪，利用重庆某污水处理厂的废水和活性污泥进行呼吸测量。获得了包含RBCOD和SBCOD生物降解过程的总氧摄取率（OUR）曲线以及内源过程的完整OUR曲线。提出了一种基于呼吸测量法的新方法，用于同时表征废水中的RBCOD和SBCOD，该方法根据外源OUR的两阶段性质选择水解模型来分析SBCOD的OUR曲线，并采用趋势检验法分析内源OUR。与传统的OUR阶段法相比，该新方法减少了人为误差，提高了废水COD组分表征的准确性。
