Comparative Study on Sludge Production in SBBR System Under OSA Operational Process

2008 2nd International Conference on Bioinformatics and Biomedical Engineering Pub Date : 2008-05-16 DOI:10.1109/ICBBE.2008.346

Meng Yao, Ye Li, Zhaoling Zhang, Siqing Wang

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引用次数: 1

Abstract

Two metabolic uncoupling processes of sequencing batch bifilm reactor (SBBR) and conventional activate system (CAS) were carried out under consecutive aerobic-setting-anaerobic (OSA) operational process at the SRT of 70 days. The yield and characteristics of sludge and wastewater treatment effects in the two reactors were analyzed in parallel. And the sludge observed yield coefficient (Yobs) were 0.0932 kgCOD/kgMLSS and 0.248 kgCOD/kgMLSS respectively. The maximal minus sludge production reached -0.244 kgCOD/kgMLSS for the grazing effect of metazoan in SBBR. The excess sludge yield was correlated with the metazoan growth status, and the breeding of metazoan would accelerate flocculation capability of bacteria and improve the performance of the sludge sedimentation apparently. The metabolism of metazoan would not influence the nitrification processes of wastewater treatment and the TN of effluent wouldn't increase. While due to the carbon source shortage of nitration, the reaction of metabolic uncoupling and the grazing of metazoan deduced the releasing of phosphate obviously.

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OSA运行过程下SBBR系统污泥产量的比较研究

在连续好氧-设置-厌氧(OSA)操作过程中，在SRT为70 d的条件下，进行了顺序间歇式双膜反应器(SBBR)和常规活化系统(CAS)的两个代谢解耦过程。并对两个反应器的污泥产率、特性及废水处理效果进行了分析。污泥观测产率系数(Yobs)分别为0.0932 kgCOD/kgMLSS和0.248 kgCOD/kgMLSS。由于后生动物在SBBR中的放牧作用，最大负污泥产生量达到-0.244 kgCOD/kgMLSS。剩余污泥产出量与后生动物的生长状况有关，后生动物的繁殖可以明显加快细菌的絮凝能力，提高污泥的沉降性能。后生动物的代谢不影响废水处理的硝化过程，出水TN不增加。而由于氮化碳源的缺乏，代谢解耦和后生动物的放牧反应明显地促进了磷酸盐的释放。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2008 2nd International Conference on Bioinformatics and Biomedical Engineering

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