Pan Zengrui, Sheng Jianlong, Qiu Chong, Wei Hongtang, Yang Qianjin, Pan Jinbo, Li Jun
Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou 310014, China.
Zhejiang Shuanglin Environment Co., Ltd., Hangzhou 311100, China.
Polymers (Basel). 2022 Mar 30;14(7):1410. doi: 10.3390/polym14071410.
Integrated sewage treatment equipment has been widely used, but the commonly used fillers for wastewater treatment are not suitable in rural areas due to their price and performance issues. In this study, an integrated magic filter filled with waste fillers was proposed and established for wastewater treatment. The filter was composed of functional modules and an equipment room, and the fillers in each module can be taken out separately and changed arbitrarily according to the needs of specific treatment conditions. The fillers used include waste plastic shavings, loofah, and waste iron shavings, generated during the processing of plastic, crop, and steel. At the same time, a 91 d experiment was performed for real wastewater treatment, and a satisfactory removal performance was obtained, with average removal rates of COD, TP, NH-N, TN, and SS being 83.3%, 89.6%, 93.8%, 74.7%, and 94.0%, respectively. Through microscope observation, a large number of microorganisms were attached to the surface of the fillers, which was conducive to the simultaneous removal of nitrogen and phosphorus. The micro-electrolysis of waste iron shavings can produce Fe and Fe, which would combine with PO to form Fe(PO) and FePO precipitates, enhancing the removal of phosphorus. In addition, the filled fillers have an excellent physical filtering effect, which can reduce the effluent SS. The magic filter achieves both the recycling of wastes and the treatment of wastewater.
一体化污水处理设备已得到广泛应用，但常用的污水处理填料因价格和性能问题在农村地区并不适用。本研究提出并构建了一种填充废弃填料的一体化神奇滤池用于污水处理。该滤池由功能模块和设备间组成，每个模块中的填料可单独取出，并可根据具体处理条件的需要任意更换。所用填料包括塑料加工、农作物加工和钢铁加工过程中产生的废塑料屑、丝瓜络和废铁屑。同时，进行了为期91天的实际污水处理实验，获得了满意的去除效果，COD、TP、NH-N、TN和SS的平均去除率分别为83.3%、89.6%、93.8%、74.7%和94.0%。通过显微镜观察，大量微生物附着在填料表面，有利于氮磷的同步去除。废铁屑的微电解可产生Fe²⁺和Fe³⁺，它们会与PO₄³⁻结合形成Fe₃(PO₄)₂和FePO₄沉淀，增强了磷的去除效果。此外，填充的填料具有优异的物理过滤效果，可降低出水SS。该神奇滤池实现了废物的回收利用和废水的处理。
