Affordable Access

deepdyve-link
Publisher Website

Membrane fouling controlled by coagulation/adsorption during direct sewage membrane filtration (DSMF) for organic matter concentration.

Authors
  • Gong, Hui
  • Jin, Zhengyu
  • Wang, Xian
  • Wang, Kaijun
Type
Published Article
Journal
Journal of Environmental Sciences
Publisher
Elsevier
Publication Date
Jun 01, 2015
Volume
32
Pages
1–7
Identifiers
DOI: 10.1016/j.jes.2015.01.002
PMID: 26040725
Source
Medline
Keywords
License
Unknown

Abstract

Unlike the role of the membrane in a membrane bioreactor, which is designed to replace a sediment tank, direct sewage membrane filtration (DSMF), with the goal of concentrating organic matters, is proposed as a pretreatment process in a novel sewage treatment concept. The concept of membrane-based pretreatment is proposed to divide raw sewage into a concentrated part retaining most organics and a filtered part with less pollutant remaining, so that energy recovery and water reuse, respectively, could be realized by post-treatment. A pilot-scale experiment was carried out to verify the feasibility of coagulant/adsorbent addition for membrane fouling control, which has been the main issue during this DSMF process. The results showed that continuous coagulant addition successfully slowed down the increase in filtration resistance, with the resistance maintained below 1.0×10(13) m(-1) in the first 70 hr before a jump occurred. Furthermore, the adsorbent addition contributed to retarding the occurrence of the filtration resistance jump, achieving simultaneous fouling control and chemical oxygen demand (COD) concentration improvement. The final concentrated COD amounted to 7500 mg/L after 6 days of operation.

Report this publication

Statistics

Seen <100 times