A段工艺处理城市-工业混合废水的性能

Performance of A-stage process treating combined municipal-industrial wastewater.

作者信息

Trzcinski Antoine Prandota, Wang Chong, Zhang Dongqing, Ang Wui Seng, Lin Li Leonard, Niwa Terutake, Fukuzaki Yasuhiro, Ng Wun Jern

机构信息

School of Civil Engineering & Surveying, Faculty of Health, Engineering and Sciences, University of Southern Queensland, Toowoomba, 4350 QLD, Australia E-mail:

Advanced Environmental Biotechnology Centre (AEBC), Nanyang Environment and Water Research Institute (NEWRI), Nanyang Technological University, 1 Cleantech Loop, CleanTech One, #06-10, Singapore 637141, Singapore.

出版信息

Water Sci Technol. 2017 Jan;75(1-2):228-238. doi: 10.2166/wst.2016.511.

DOI:10.2166/wst.2016.511

PMID:28067663

Abstract

A biosorption column and a settling tank were operated for 6 months with combined municipal and industrial wastewaters (1 m/hr) to study the effect of dissolved oxygen (DO) levels and Fe dosage on removal efficiency of dissolved and suspended organics prior to biological treatment. High DO (>0.4 mg/L) were found to be detrimental for soluble chemical oxygen demand (COD) removals and iron dosing (up to 20 ppm) did not improve the overall performance. The system performed significantly better at high loading rate (>20 kg COD.m.d) where suspended solids and COD removals were greater than 80% and 60%, respectively. This is a significant improvement compared to the conventional primary sedimentation tank, and the process is a promising alternative for the pre-treatment of industrial wastewater.

摘要

运行一个生物吸附柱和一个沉淀池6个月，处理城市和工业混合废水（流速1米/小时），以研究溶解氧（DO）水平和铁投加量对生物处理前溶解有机物和悬浮有机物去除效率的影响。发现高溶解氧（>0.4毫克/升）不利于可溶性化学需氧量（COD）的去除，并且铁投加量（高达20 ppm）并未改善整体性能。该系统在高负荷率（>20千克COD·米⁻²·天⁻¹）下表现明显更好，此时悬浮固体和COD的去除率分别大于80%和60%。与传统的初沉池相比，这是一个显著的改进，并且该工艺是工业废水预处理的一个有前景的替代方案。