张代钧
(1)废水生物脱氮除磷的新理论与新技术;(2)废水生物处理过程检测仪表与调控方法;(3)环境污染及其控制化学;(4)环境规划与环境管理
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- 姓名:张代钧
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学术头衔:
博士生导师
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学科领域:
环境科学技术
- 研究兴趣:(1)废水生物脱氮除磷的新理论与新技术;(2)废水生物处理过程检测仪表与调控方法;(3)环境污染及其控制化学;(4)环境规划与环境管理
张代钧, 1963年生于重庆. 1983年重庆大学本科毕业, 1990年获博士学位. 比利时根特大学微生物生态学与技术实验室(Laboratory of Microbial Ecology and Technology, University of Ghent, Belgium, 1999.10 -2000.10)访问学者, 美国普林斯顿大学土木与环境工程系(Department of Civil and Environmental Engineering, Princeton University, USA, 2012.01-06)高级研究学者. 1997年晋升为教授, 2001年起担任博士生导师. 曾任重庆大学环境科学系副主任(1995-2002), 系主任(2003-2012); 现任重庆大学教授(2级), 工学部学术委员. 担任多个国际刊物(Water Res, Bioresource Technol, J Chem Technol Biotechnol, Water Sci Technol, etc.)审稿人, 国际水协会(International Water Association)会员, 重庆市环境科学学科学术带头人. 主持完成国家和省(部)级重点科技攻关等科研课题20余项; 获得国家科技进步3等奖1项, 省(部)级科技进步1等奖2项, 2等奖3项和3等奖2项; 授权发明专利5项; 公开发表学术论文180余篇, 出版专著2部. 从事研究与开发的主题包括: (1)废水生物脱氮除磷新理论与新技术; (2)水污染控制与水环境修复; (3)环境污染及其控制化学; (4)环境规划与管理.
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9
【期刊论文】An experimental study of low concentration sludge settling velocity under turbulent condition
张代钧, Lisha Guo a, Daijun Zhang a, c, *, Danyu Xu b, Yuan Chen a
WATER RESEARCH 43 (2009) 2383-2390,-0001,():
-1年11月30日
Particle Image Velocimetry (PIV) was used to study the settling of activated sludge flocs under turbulent flow conditions. Experimental results showed that a larger particle diameter led to a higher settling velocity while the higher turbulence intensity led to lower settling velocity. Based on the measurements a mathematical relation has been derived which correlates the settling velocity for individual sludge flocs under turbulent conditions through a modified Vesilind equation. Settling velocity shows a power-type relation to sludge particle diameter and an exponential-type relation with turbulence intensity and sludge concentration.
Low concentration sludge, PIV, Sludge settling velocity, Turbulence intensity
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张代钧
,-0001,():
-1年11月30日
The aim of this paper is to realize fully the hybrid respirometric measurement principle with high accuracy and measuring frequency. Based on the knowledge of the difficulty in implementing “ultimate” hybrid respirometer and the drawbacks of the simpler hybrid respirometer, a novel implementation of the hybrid respirometric measurement principle was developed. It was verified that the new hybrid respirometer possessed the advantage of “ultimate” hybrid respirometer while its DO electrodes suffered no effect of flow rate change. Also the accurate and constant temperature of the whole set-up was solved. For the purpose of enhancing the availability of the respirometer proposed in this paper, software with friendly user interface was developed, in which advanced arithmetic and median filter were adopted. Finally the new hybrid respirometer system was evaluated and the accuracy and reliability were satisfied.
Hybrid respirometric measurement principle, Respirometer, Software, Development
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【期刊论文】A method for characterizing the complete settling process of activated sludge
张代钧
,-0001,():
-1年11月30日
Based on batch settling tests, a model describing the compression settling process of activated sludge was developed and validated by experiments. Furthermore, a theoretical equation for determining the critical point when the compression settling stage commences, and a new velocity function for the compression settling were deduced from the model. By combining the new model and the conservation of mass, it was proved that the Vesilind function was also capable of describing the compression settling velocity on condition that the appropriate parameters were estimated. Dividing the complete settling process of activated sludge into the zone settling and compression settling stages, and describing them by the Vesilind function with different parameter sets was more reasonable for characterizing the complete settling process of activated sludge. The method was applied to predict the sludge blanket height during batch settling tests, and the results showed that the settling processes could be simulated well.
Compression settling, Settling velocity, Activated sludge, Parameter estimation
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张代钧, , 许丹宇, 任宏洋, 曹海彬, 郑敏, 刘惠强
长江流域资源与环境,2005,14(5):001~007,-0001,():
-1年11月30日
论述了三峡水库几个重要水环境问题。对近年来三峡水库水污染控制科学研究工作进行回顾,评述了一些重要研究成果。就三峡水库水质模拟、水体富营养化、水库泥沙截留淤积和重金属污染等问题进行了深入探讨。基于国际水协会最新推出的河流水质模型,提出了三峡水库水环境模拟研究的观点和方法;基于湖泊(水库)生态动力学模型原理,在对水体中磷元素预测的基础上,从营养盐含量、水深、流速、温度因素等与富营养化非线性映射关系出,初步建立三峡水库水体富营养化人工神经网络模型,对三峡水库水体富营养化潜势进行研究,分析讨论了一些初步结果;论述了水库泥沙截留淤积及其与水体中污染物,特别是重金属污染的相互作用;建议了近期内应予以重视的一些三峡水库重要水环境科学问题。
三峡水库, 水环境容量, 富营养化, 水环境模拟, 水污染控制, 泥沙沉积
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张代钧, ZHANG Dai-jun,
Journal of Environmental Sciences Vol. 15, No.3, pp. 423-432, 2003,-0001,():
-1年11月30日
The integration of methanogenesis with denitrification and anaerobic ammoniumoxidation (ANAMMOX) was studied in an expanded granular sludge bed (EGSB) reactor in this work. Experimental results from the continuous treatment of wastewater with nitrite and ammonium, which lasted for 107 days, emonstrated that wastewater with high nitrite and ammonium could be anaerobically treated in an expanded granular sludge bed reactor. More than 91% to 97% of COD were removed at up to about 3.9g CODP (L
methanogenesis, denitrification, ANAMMOX, EGSB reactor
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张代钧, Daijun Zhang a, b, *, Peili Lu a, Tengrui Long c, Willy Verstraeted
Process Biochemistry 40 (2005) 541-547,-0001,():
-1年11月30日
A staged anaerobic and aerobic membrane bioreactor (MBR) was constructed. The membrane module was submerged in the aerobic zone of the reactor, and was operated under the mode of alternative suction and air backwash. Air backwash and aeration around the membrane module served as the cleaning of the membrane, resulted in the steady operation of the reactor at the flux of 5-14lm−2 h−1 for up to 200h without any additional cleaning. The efficiency of COD removal was more than 99% at up to 10.08g CODl−1 per day of the volumetric loading rate (VLR). The efficiency of ammonium removal was 100% at a VLR of 0.18g NH4+-N l−1 per day. Sixty to 80% of COD was anaerobically biodegraded in the anaerobic zone of the reactor and this produced a great amount of methane. Methane passed to the aerobic zone of the reactor and could serve as a carbon source for denitrification. Intermittent aeration allowed nitrification and denitrification to occur simultaneously in the aerobic zone of the reactor. The capacity for ammonium removal reached up to 0.5g NH4+-N l−1 per day. Eighty-four to 94% of the total oxidised nitrogen converted from the oxidisation of ammonium was denitrified.
Methanogensis, Simultaneous nitrification and denitrification, Methanotrophic denitrification, Air backwash MBR
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【期刊论文】活性污泥2号模型用于城市污水处理厂脱氮除磷改造的研究
张代钧, , 卢培利, 严晨敏, 龙腾锐
环境科学学报,2003,23(3):332~337,-0001,():
-1年11月30日
利用自行开发的活性污泥2号模型ASMNO.2计算机模拟程序对重庆市某污水厂三种脱氮除磷改造方案(APO,A2PO,倒置A2PO)进行了模拟研究,寻求了每一种方案的最佳运行控制参数。结果表明:(1)将现有曝气池前端1P4控制为缺氧而形成APO工艺,缺氧区溶解氧浓度为0.10mgPL,混合液内回流比为100%,可以使TN去除率达到58.6%,提高24个百分点,TP基本不受影响;(2)将现有曝气池前端12%控制为厌氧区,24%控制为缺氧区,缺氧区溶解氧浓度为0.10mgPL,混合液内回流比为100%,可以使TN去除率达到62.1%,提高约28个百分点,TP去除率达到78.3%,提高37个百分点;(3)倒置A2PO工艺与常规A2PO工艺的出水水质基本相当,但倒置A2PO工艺在工程实践中更易于实现;(4)三种工艺出水COD和氨氮均能达到国家规定的一级排放标准。
活性污泥2号模型, 活性污泥法, 生物脱氮除磷改造
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张代钧, *, 卢培利, 李小鹏, 祖波
中国环境科学,2005,25 (3):,-0001,():
-1年11月30日
用普通活性污泥经120d富集,得到氨氧化菌混培物,氨氧化菌浓度提高300倍。在NO2/O2混合气氛下进行氨氧化试验,结果表明,无分子氧时,氨氧化菌能以NO2为电子受体氧化氨,并产生NO;加入氧气后,氨氧化速率明显提高,最高速率[33µmol NH4+-N/(gMLSSh)]发生在混合气体中NO2和O2浓度分别为1.79µmol/L和9.38mmol/L时;在NO2浓度为0.89-1.79µmol/L范围内,O2能够强化基于NO2的氨氧化反应,但随着NO2浓度增大至6.71µmol/L,氨氧化速率却降低。部分NO被O2氧化,使得反应器出口气体中NO2浓度高于进口。试验过程中产生了最大约20%氮损失,这与氨氧化和厌氧氨氧化相互耦合产生气态含氮产物(N2、NO、N2O)有关。
氨氧化菌混培物, 微量NO2, 氨氧化, 厌氧氨氧化
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张代钧, *, 曹琳, 严晨敏, 龙腾锐
中国环境科学,2005,25(2):231~235,-0001,():
-1年11月30日
将简化的活性污泥模型ASM3与传质反应方程相耦合,建立了生物膜多基质模型(BMSM),在其基础上,运用均相生物膜反应单元概念,导出了曝气生物滤池(BAF)反应器一维模型,模型方程表明,出水基质浓度与生物膜表面积相关,与反应器体积无关;灵敏度分析结果表明,出水水质对大部分动力学参数灵敏度较低,对生物膜参数如表面积、膜厚、活性附着生物量等灵敏度较高,进行了以陶球为滤料的BAF处理合成生活污水实验,测定了生物膜膜厚、生物膜干密度、生物膜面积。用Matlab语言对BAF的稳态运行进行模拟,考察了COD、NH4+-N、NO3--N沿填料高度浓度上的变化。结果表明,建立的BMSM能较好地模拟BAF的稳态运行。
曝气生物滤池, 生物膜多基质模型, BAF反应器, 一维模型, 稳态模拟
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