Comparative investigation on integrated vertical-flow biofilters applying sulfur-based and pyrite-based autotrophic denitrification for domestic wastewater treatment

被引：106

作者：

Kong, Zhe ^{[1
,2
]}

Li, Lu ^{[1
,2
]}

Feng, Chuanping ^{[1
,2
]}

Dong, Shanshan ^{[1
,2
]}

Chen, Nan ^{[1
,2
]}

机构：

[1] China Univ Geosci, Minist Educ, Key Lab Groundwater & Evolut, 29 Xueyuan Rd, Beijing 100083, Peoples R China

[2] China Univ Geosci, Sch Water Resources & Environm, 29 Xueyuan Rd, Beijing 100083, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2016年 / 211卷

基金：

中国国家自然科学基金;

关键词：

Integrated biofilter; Sulfur; Pyrite; Autotrophic denitrification; Clone library; Microbial diversity; DRINKING-WATER; HETEROTROPHIC DENITRIFICATION; CONSTRUCTED WETLANDS; INFILTRATION SYSTEM; NITROGEN REMOVAL; CARBON; NITRATE; PERFORMANCE; ADSORPTION; SEWAGE;

D O I：

10.1016/j.biortech.2016.03.083

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Two parallel biofilters applying sulfur/pyrite-based autotrophic denitrification were investigated for removing COD, TP and TN by a coordinated process. Results demonstrated good performance by removing 86.32% vs 87.14% COD and 92.56% vs 89.65% NH4+-N. Biofilter with sulfur (BS) was superior on nitrate (89.74% vs 80.72%) and TN removal (83.18% vs 70.42%) while biofilter with pyrite (BP) was better on TP removal (82.58% vs 77.40%) and maintaining sulfate (27.56 mg L-1 vs 41.55 mg L-1) and pH (7.13 vs 6.31). Water-permeable adsorbents lowered clogging risk and buffered loading. Clone library revealed reasons of diversities, pH variation and sulfate accumulation of both biofilters. Sulfur was efficient on denitrification but whose byproducts were troublesome, pyrite produced less byproduct but which was sensitive to organics. This research was the first attempt to systematically compare two promising alternatives and their merits/demerits for rural wastewater on-site treatment. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：125 / 135

页数：11

共 35 条

[1] ADP sulfurylase from Thiobacillus denitrificans is an adenylylsulfate:phosphate adenylyltransferase and belongs to a new family of nucleotidyltransferases [J].