New insight into the effect of mixed liquor properties changed by pre-ozonation on ceramic UF membrane fouling in wastewater treatment

化学 膜污染 结垢 超滤(肾) 废水 混合液悬浮物 制浆造纸工业 色谱法 陶瓷膜 粉末活性炭处理 过滤(数学) 活性污泥 臭氧 化学工程 活性炭 废物管理 有机化学 吸附 生物化学 工程类 统计 数学
作者
Shengyin Tang,Zhenghua Zhang,Xihui Zhang
出处
期刊:Chemical Engineering Journal [Elsevier BV]
卷期号:314: 670-680 被引量:52
标识
DOI:10.1016/j.cej.2016.12.032
摘要

The effect of mixed liquor properties changed by ozonation especially with high dosages on membrane fouling is very complex and remains unclear. In this study, the effect of mixed liquor properties changed by ozonation especially with high dosages on ceramic ultrafiltration (UF) membrane fouling in wastewater treatment and the corresponding mechanism were systematically studied by characterization of the mixed liquor properties, hydraulic performance, the fouling layers and modeling at different ozone dosages (0, 2, 5, 10 mg/L). The membrane filterability of the mixed liquor after pre-ozonation (⩽5 mg/L) was enhanced and the corresponding membrane fouling was mitigated. After pre-ozonation, activated sludge had the better settleability and larger floc size. Meanwhile, there was a remarkable reduction of dissolved organic carbon (DOC), soluble microbial products (SMP) and extractable extra-cellular polymeric substances (EPS) after pre-ozonation and the removed organics were mainly belonged to the high molecular weight (MW) (1–10 kDa) and very high MW (10–200 kDa) substances. Intermediate blocking was the main membrane fouling during the mixed liquor filtration process and the best fouling mitigation performance was achieved for the sample with an intermediate ozone dosage of 5 mg/L (1.7 mg-ozone/g-mixed liquor suspended solids (MLSS)). Meanwhile, the water quality of permeate was even better after pre-ozonation (⩽5 mg/L) with the lower DOC and total nitrogen (TN) concentrations. Severe cell lysis occurred with the significant increase of the released organics in the mixed liquor and the activated sludge had smaller floc size and worse settleability when the pre-ozonation dosage was above 10 mg/L, which in turn resulted in the deteriorated membrane fouling control performance.

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
领导范儿应助威武的元冬采纳,获得30
3秒前
3秒前
junjun2011完成签到,获得积分10
5秒前
Dasha完成签到,获得积分10
5秒前
充电宝应助puzi采纳,获得10
7秒前
LiuLiu发布了新的文献求助10
8秒前
深情安青应助昏睡的绿海采纳,获得10
8秒前
9秒前
大大的西瓜完成签到 ,获得积分10
13秒前
华仔应助XYN1采纳,获得10
14秒前
14秒前
A阿澍发布了新的文献求助30
14秒前
丘比特应助TMX采纳,获得10
16秒前
18秒前
量子星尘发布了新的文献求助10
19秒前
21秒前
无奈满天发布了新的文献求助10
24秒前
24秒前
24秒前
25秒前
26秒前
27秒前
zhou269完成签到,获得积分10
29秒前
在逃公主许翠花完成签到,获得积分10
29秒前
littleblack发布了新的文献求助10
30秒前
TMX发布了新的文献求助10
30秒前
30秒前
DaiTing发布了新的文献求助10
30秒前
31秒前
简单点发布了新的文献求助10
31秒前
华仔应助无奈满天采纳,获得10
31秒前
fjejj发布了新的文献求助10
32秒前
sisi发布了新的文献求助10
33秒前
华仔完成签到,获得积分10
35秒前
华仔应助特梅头采纳,获得10
37秒前
38秒前
无奈满天完成签到,获得积分10
39秒前
yyuu完成签到,获得积分10
42秒前
43秒前
44秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
‘Unruly’ Children: Historical Fieldnotes and Learning Morality in a Taiwan Village (New Departures in Anthropology) 400
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 350
Robot-supported joining of reinforcement textiles with one-sided sewing heads 320
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3988920
求助须知:如何正确求助?哪些是违规求助? 3531290
关于积分的说明 11253247
捐赠科研通 3269903
什么是DOI,文献DOI怎么找? 1804830
邀请新用户注册赠送积分活动 882027
科研通“疑难数据库(出版商)”最低求助积分说明 809052