Decentralized two-stage sewage treatment by chemical-biological flocculation combined with microalgae biofilm for nutrient immobilization in a roof installed parallel plate reactor

被引：73

作者：

Zamalloa, Carlos ^{[1
]}

Boon, Nico ^{[1
]}

Verstraete, Willy ^{[1
]}

机构：

[1] Univ Ghent, Lab Microbial Ecol & Technol LabMET, B-9000 Ghent, Belgium

来源：

BIORESOURCE TECHNOLOGY | 2013年 / 130卷

关键词：

Photobioreactor; Algae; Nutrient recovery; Municipal wastewater; Green roofs; WASTE-WATER TREATMENT; RATE ALGAL PONDS; NITRIFICATION-DENITRIFICATION; REMOVAL; NITROGEN; BIOFLOCCULATION; PHOSPHORUS; RESOURCES; RECOVERY; ENERGY;

D O I：

10.1016/j.biortech.2012.11.128

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

In this lab-scale study, domestic wastewater is subjected to a chemical biological adsorption (A-stage), followed by treatment in an innovative roof installed parallel plate microalgae biofilm reactor for nutrient immobilization (I-stage). The A-stage process was operated at a hydraulic retention time (HRT) of 1 h and a solid retention time of 1 day (FeSO4 as flocculant). The I-stage, which consequently received the effluent of the A-stage process, was operated at an HRT of 1 day and exposed to natural light. The overall system removed on average 74% of the total chemical oxygen demand, 82% of the total suspended solids, 67% of the total nitrogen and 96% of the total phosphorous in the wastewater. The design involves a relatively low capital and operating cost which is in the order of 0.5 (sic)/m(3) wastewater treated. These aspects suggest that the A/I process can be used as a decentralized domestic wastewater treatment system. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：152 / 160

页数：9