水性涂料及相关产品行业废水的混凝絮凝及其对惰性化学需氧量的影响。
Coagulation-flocculation of wastewaters from a water-based paint and allied products industry and its effect on inert COD.
作者信息
Eremektar Gulen, Goksen Serdar, Babuna Fatos Germirli, Dogruel Serdar
机构信息
Istanbul Technical University, Faculty of Civil Engineering, Environmental Engineering Department, Maslak, Istanbul, Turkey.
出版信息
J Environ Sci Health A Tox Hazard Subst Environ Eng. 2006;41(9):1843-52. doi: 10.1080/10934520600779018.
In this study, treatability of wastewaters generated from a water-based paint and allied products industry has been investigated. As the industry already houses a treatment facility that consists of a coagulation-flocculation unit followed by an activated sludge process, the experimental study focuses on using the existing treatment plant in the most efficient way. In this context the COD removal efficiencies and operating costs of different coagulants i.e., sodium bentonite, alum, FeCl(3) and FeSO(4) have been evaluated. By assessing the refractory COD content of the subsequent activated sludge system outlet, the coagulant yielding the optimal output has been addressed. The outcomes reveal that the optimum result can be obtained by applying 50 mg L(-1) of FeCl(3) coagulant at the original pH of the effluent.
在本研究中，对水性涂料及相关产品行业产生的废水的可处理性进行了调查。由于该行业已有一个处理设施，该设施由一个混凝 - 絮凝单元和随后的活性污泥工艺组成，因此实验研究集中于以最有效的方式使用现有的处理厂。在此背景下，评估了不同混凝剂（即膨润土钠、明矾、FeCl₃和FeSO₄）的化学需氧量（COD）去除效率和运行成本。通过评估后续活性污泥系统出口的难降解COD含量，确定了产生最佳输出的混凝剂。结果表明，在废水原始pH值下投加50 mg L⁻¹的FeCl₃混凝剂可获得最佳效果。
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