Embedding constructed wetland in sequencing batch reactor for enhancing nutrients removal: A comparative evaluation

被引：22

作者：

Liu, Ranbin ^{[1
]}

Zhao, Yaqian ^{[1
,2
]}

Zhao, Jinhui ^{[3
]}

Xu, Lei ^{[1
]}

Sibille, Caroline ^{[4
]}

机构：

[1] Univ Coll Dublin, Sch Civil Engn, UCD Dooge Ctr Water Resources Res, Dublin 4, Ireland

[2] Xian Univ Technol, Sch Civil Engn & Architecture, Xian 710048, Shaanxi, Peoples R China

[3] Nanjing Tech Univ, Coll Urban Construct, Nanjing 211816, Jiangsu, Peoples R China

[4] Ecole Mines Nantes, Energy Syst Environm Dept, 4 Rue Afred Kastler,BP 20722, F-44307 Nantes 3, France

来源：

JOURNAL OF ENVIRONMENTAL MANAGEMENT | 2017年 / 192卷

关键词：

Green bio-sorption reactor (GBR); Alum sludge; Constructed wetland; Activated sludge; Aesthetic value; Simultaneous nitrification and denitrification (SND); BED BIOFILM REACTOR; WASTE-WATER TREATMENT; NITROGEN REMOVAL; ALUM SLUDGE; INTERMITTENT AERATION; PHOSPHORUS REMOVAL; TREATMENT PLANTS; PERFORMANCE; SYSTEMS; CHINA;

D O I：

10.1016/j.jenvman.2017.01.080

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

In the present study, a novel green bio-sorption reactor (GBR) was firstly proposed and preliminarily investigated by embedding constructed wetland (CW) into the aeration tank of the conventional activated sludge (CAS). This integrated novel system owns the striking features of adding carriers of wetland substrate (i.e. the dewatered alum sludge in this case) in CAS for robust phosphorus adsorption and enriching the biomass. Meanwhile, the "green" feature of this GBR imparted aesthetic value of CW to the CAS system. The preliminary 3-month trial of GBR based on a sequencing batch reactor (GB-SBR) with diluted piggery wastewater demonstrated an average removal of 96%, 99% and 90% for BOD, TP and TN, respectively. The comparison with moving bed biofilm reactor (MBBR) and integrated fixed-film activated sludge (IFAS) reflected the advantages of GBR over purification performance, aesthetic value and potential carbon sink. Moreover, the carriers used in the GBR are dewatered alum sludge which is in line with the policy of "recycle, reuse and reduce". Overall, this GBR undoubtedly offered a more sustainable and economical solution for retrofitting the aging CAS. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：302 / 308

页数：7

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