Purifying Urban Polluted Rainwater with Fibre Bundle-Activated Carbon-Zeolite Coupled System

化学工业与工程

Chemcial Industry and Engineering

2019, Vol. 36

Issue (5) :43-51 DOI: 10.13353/j.issn.1004.9533.20181053

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Purifying Urban Polluted Rainwater with Fibre Bundle-Activated Carbon-Zeolite Coupled System

Cao Junrui, Wang Xunliang, Ma Yuhui, Wang Shuxun, Zhao Jin, Wang Wenhua, Jiang Tianxiang

Tianjin Institute of Seawater Desalination and Multipurpose Utilization, State Oceanic Administration, Tianjin 300192, China

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Abstract In order to control the rainwater pollution from road runoff effectively, a fibre bundle-activated carbon-zeolite system was designed to remove a variety of pollutants such as turbidity, TOC, NH₄⁺-N and PO₄^3-. The results showed that when the concentration of turbidity, TOC, NH₄⁺-N and PO₄^3- were in the range of 3.85 NTU to 25.60 NTU, 4.58 mg/L to 17.80 mg/L, 0.31 mg/L to 1.42 mg/L and 0.05 mg/L to 0.36 mg/L respectively, the removal rates were 79.2% to 96.9%, 82.7% to 87.2%, 87.5% to 94.0% and 52.9% to 65.6%, respectively. Activated carbon has an excellent adsorption capacity for TOC, and the adsorption process conformed to Langmuir adsorption isotherm model. The maximum adsorption capacity of monomolecular layer was 41.70 mg/g. While zeolite has a better adsorption capacity for NH₄⁺-N and PO₄^3- than the activated carbon, and the adsorption process also conformed to Langmuir adsorption isotherm model. The maximum adsorption capacity of monomolecular layer was 12.31 mg/g and 0.64 mg/g respectively. The combined process was an ideal method to purify the urban polluted rainwater.

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	Cao Junrui
	Wang Xunliang
	Ma Yuhui
	Wang Shuxun
	Zhao Jin
	Wang Wenhua
	Jiang Tianxiang

Keywords： rainwater； filtration； fibre bundle； activated carbon； zeolite

Received 2018-09-18;

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Cao Junrui, Wang Xunliang, Ma Yuhui, Wang Shuxun, Zhao Jin, Wang Wenhua, Jiang Tianxiang.Purifying Urban Polluted Rainwater with Fibre Bundle-Activated Carbon-Zeolite Coupled System[J] Chemcial Industry and Engineering, 2019,V36(5): 43-51

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