Construction and operation characteristics of countercurrent-cocurrent dissolved air flotation

doi:10.11949/j.issn.0438-1157.20160917

CIESC Journal ›› 2016, Vol. 67 ›› Issue (12): 5252-5258.DOI: 10.11949/j.issn.0438-1157.20160917

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Construction and operation characteristics of countercurrent-cocurrent dissolved air flotation

WANG Yonglei^1,2, LIU Baozhen^1,2, ZHANG Kefeng^1,2, LI Mei^1,2, JIA Ruibao³, SONG Wuchang³, LI Jun⁴

1 College of Environmental and Municipal Engineering, Shandong Jianzhu University, Jinan 250100, Shandong, China;
2 Shandong Province Co-Innovation Center of Green Building, Jinan 250100, Shandong, China;
3 Shandong Province City Water Supply and Drainage Water Quality Monitoring Center, Jinan 250021, Shandong, China;
4 Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China

Received:2016-07-04 Revised:2016-08-28 Online:2016-12-05 Published:2016-12-05
Supported by:
supported by the Shandong Province Science and Technology Development Projects(2014GSF120003), Ministry of Housing and Urban-Rural Development Technology Projects(2014-K5-026), the Natural Science Foundation of Shandong Province(ZR2016EEM32) the Doctoral Fund of Shandong Jianzhu University in 2015(XNBS1511).

逆向-同向流气浮工艺构建与运行特性

王永磊^1,2, 刘宝震^1,2, 张克峰^1,2, 李梅^1,2, 贾瑞宝³, 宋武昌³, 李军⁴

1 山东建筑大学市政与环境工程学院, 山东济南 250100;
2 山东省绿色建筑协同创新中心, 山东济南 250100;
3 山东省城市供排水水质监测中心, 山东济南 250021;
4 北京工业大学建筑工程学院北京市水质科学与水环境恢复工程重点实验室, 北京 100124

通讯作者: 王永磊(1977-),男,博士,副教授。wyl1016@sina.com
基金资助:
山东省科技发展计划项目（2014GSF120003）；住房和城乡建设部科学技术项目计划项目（2014-K5-026）；山东省自然科学基金项目（ZR2016EEM32）；山东建筑大学博士基金项目（XNBS1511）。

Abstract

Abstract:

Conventional dissolved air flotation(DAF) has the problems of low efficiency for microbubble meshing and particle adhesion, and unstability of the adhesion between microbubbles and particles. In this work, a novel countercurrent-cocurrent dissolved air flotation(CCDAF) was developed, of which the contact room was consisted of collision and adhesion contact room, and each room was introduced dissolved air water. The results showed that the CCDAF significantly enhanced the adhesion efficiency of microbubbles-floc. The average removal efficiency of turbidity and algae were 96.4% and 96.50%, respectively. The diameter of particles for effluent was mainly ranged in 2-7 μm. Most of the removed substance was macromolecules and hydrophobic organic compounds. COD_Mn, UV₂₅₄, DOC had achieved 37.6%, 46.3% and 32.11%, respectively, indicating the significantly higher removal efficiency of CCDAF than the traditional DAF. The analysis of the removal mechanism between microbubbles and particles showed that the collision, adhesion and copolymerization in countercurrent room and collision, adhesion, wrapped, meshing and adsorption-bridging in cocurrent-contact room were probably the reasons to enhance the removal efficiency of this CCDAF.

Key words: coagulation, flotation, CCDAF, adsorption, microbubbles-floc collision and adhesion, DAF process

摘要：

针对传统溶气气浮（DAF）工艺中气泡对絮体颗粒捕集、黏附效率低，泡絮体黏附不稳定等问题，基于泡絮碰撞黏附理论，研发了集逆向流与同向流于一体的DAF工艺（CCDAF）。该工艺溶气水分两次投加，接触室分为碰撞接触室和黏附接触室。试验结果表明，CCDAF工艺显著提高了泡絮黏附效率和泡絮体稳定性，对浊度、藻类平均去除率达到96.4%、96.50%，出水颗粒物以2~7 μm粒径为主。工艺主要去除大分子、疏水性有机物，COD_Mn、UV₂₅₄、DOC平均去除率分别达到37.6%、46.3%和32.11%，CCDAF比同向流及逆向流DAF除污染效能更加显著。泡絮黏附机理分析表明，CCDAF工艺逆向流碰撞区主导作用机制为碰撞黏附及共聚作用，同向流接触区为碰撞黏附及网捕、包卷和架桥作用。

关键词: 混凝, 浮选, CCDAF, 吸附, 泡絮碰撞黏附, 溶气气浮

CLC Number:

TU991

WANG Yonglei, LIU Baozhen, ZHANG Kefeng, LI Mei, JIA Ruibao, SONG Wuchang, LI Jun. Construction and operation characteristics of countercurrent-cocurrent dissolved air flotation[J]. CIESC Journal, 2016, 67(12): 5252-5258.

王永磊, 刘宝震, 张克峰, 李梅, 贾瑞宝, 宋武昌, 李军. 逆向-同向流气浮工艺构建与运行特性[J]. 化工学报, 2016, 67(12): 5252-5258.

References 30

[1]	ZHANG X, HEWSON J C, AMENDOLA P, et al. Critical evaluation and modeling of algal harvesting using dissolved air flotation[J]. Biotechnology and Bioengineering, 2014, 111(12):2477-2485.
[2]	ZHU I X, BATES B J, ANDERSON D M. Removal of Prorocentrum minimum from seawater using dissolved air flotation[J]. Journal of Applied Water Engineering and Research, 2014, 2(1):47-56.
[3]	胡辉.低温低浊黄河水强化混凝研究[D]. 郑州:郑州大学, 2013. HU H. Enhanced coagulation of Yellow River water at low temperature and turbidity[D]. Zhengzhou:Zhengzhou University, 2013.
[4]	YANG R Q, WANG H F, LIU J C. Jet flotation column system structure design and numerical simulation of two-phase flow[J]. Advanced Materials Research, 2013, 616:655-661.
[5]	AHMAD K D. Flotation of chalcopyrite fine particles in the presence of hydrodynamic cavitation nanobubbles[J]. Nashrieh Shimi Va Mohandesi Shimi Iran, 2014, 32(4):81-91.
[6]	YU H W, QI S W, SHENG G Z, et al. Improvement of operational mode of counter-current dissolved air flotation process[C]//Digital Manufacturing and Automation(ICDMA), 2010 International Conference on. IEEE, 2010:838-841.
[7]	FIROUZIM, NGUYEN A V, HASHEMABADI S H. The effect of microhydrodynamics on bubble-particle collision interaction[J]. Minerals Engineering, 2011, 24(9):973-986.
[8]	KIM M S, KWAK D H. Evaluation of initial collision-attachment efficiency between carbon dioxide bubbles and algae particles for separation and harvesting[J]. Water Science & Technology, 2014, 69(12):2482-2491.
[9]	桑义敏, 陈家庆, 韩严和, 等. 气浮工艺中气泡-颗粒碰撞效率和理论计算模型研究[J]. 工业水处理, 2014, 34(2):5-10. SANG Y M, CHEN J Q, HAN Y H, et al. Bubble-particle collision efficiency in flotation and its theoretical model[J]. Industrial Water Treatment, 2014, 34(2):5-10.
[10]	LAKGHOMI B, LAWRYSHYN Y, HOFMANN R. A model of particle removal in a dissolved air flotation tank:importance of stratified flow and bubble size[J]. Water Research, 2015, 68:262-272.
[11]	EDZWALD J K. Dissolved air flotation and me[J]. Water Research, 2010, 44(7):2077-2106.
[12]	RAELI M, MARCHETTO M. High-rate dissolved air flotation for water treatment[J]. Water Science & Technology, 2001, 43(8):43-49.
[13]	郭瑾珑, 王毅力. 逆流共聚气浮水处理工艺研究[J]. 中国给水排水, 2002, 18(7):12-16. GUO J L, WANG Y L. Countercurrent co-flocculation flotation-new water treatment method[J]. China Water & Wastewater, 2002, 18(7):12-16.
[14]	GUO J, WANG Y, LI D, et al. Counterflow co-flocculation flotation for water purification[J]. Journal of Environmental Science and Health, Part A, 2003, 38(5):923-934.
[15]	ZHANG H, LIU J, CAO Y, et al. Effects of particle size on lignite reverse flotation kinetics in the presence of sodium chloride[J]. Powder Technology, 2013, 246:658-663.
[16]	LI Y, ZHAO W, GUI X, et al. Flotation kinetics and separation selectivity of coal size fractions[J]. Physicochemical Problems of Mineral Processing, 2013, 49(2):387-395.
[17]	贾瑞宝, 孙韶华, 宋武昌, 等. 受污染引黄水库水净化技术研究与工艺优化[M]. 北京:中国建筑工业出版社, 2015:41-151. JIA R B, SUN S H, SONG W C, et al. Purification Technology and Optimization of Polluted Yellow River Reservoir Water[M]. Beijing:China Architecture and Technology Press, 2015:41-151.
[18]	KHIADANI M, KOLIVAND R, AHOOGHALANDARI M, et al. Removal of turbidity from water by dissolved air flotation and conventional sedimentation systems using poly aluminum chloride as coagulant[J]. Desalination and Water Treatment, 2014, 52(4/5/6):985-989.
[19]	徐江宁. 微泡气浮对水处理的作用机理和实验研究[D]. 昆明:昆明理工大学, 2013. XU J N. Mechanism of micro-bubble air flotation in water treatment process and flotation experiment[D]. Kunming:Kunming University of Science and Technology, 2013.
[20]	刘晓聪, 邓慧萍, 潘若平, 等. 混凝/PAC/超滤工艺去除水中天然有机物的研究[J]. 中国给水排水, 2012, 28(9):59-61. LIU X C, DENG H P, PAN R P, et al. Removal of natural organic matter in water by coagulation/PAC/ultrafiltration process[J]. China Water & Wastewater, 2012, 28(9):59-61.
[21]	SANTO C E, VILAR V J P, BOTELHO C M S, et al. Optimization of coagulation-flocculation and flotation parameters for the treatment of a petroleum refinery effluent from a Portuguese plant[J]. Chemical Engineering Journal, 2012, 183:117-123.
[22]	VIZCARRA T G, HARMER S L, WIGHTMAN E M, et al. The influence of particle shape properties and associated surface chemistry on the flotation kinetics of chalcopyrite[J]. Minerals Engineering, 2011, 24(8):807-816.
[23]	THORNTON A J. The application and future development of adaptive control to the froth flotation process[J]. Tetrahedron, 2015, 67(42):8195-8203.
[24]	方晶云. 蓝藻细胞及藻类有机物在氯化消毒中副产物的形成机理与控制[D]. 哈尔滨:哈尔滨工业大学, 2010. FANG J Y. Cyanobacteria algae cells and the formation mechanism of the organic matter in the chlorination by-products and control[D]. Herbin:Harbin Institute of Technology, 2010.
[25]	张声, 刘洋, 张晓健, 等. 活性炭石英砂双层深床滤料浮滤池处理高藻水源水的研究[J]. 环境科学, 2004, 25(5):52-56. ZHANG S, LIU Y, ZHANG X J, et al. Treating of algae-laden raw water with GAC-sand dual media deep bed dissolved air flotation/filtration[J]. Chinese Journal of Environmental Science, 2004, 25(5):52-56.
[26]	刘善培,王启山,何文杰,等.混凝/气浮与混凝/沉淀工艺处理微污染原水的对比[J]. 中国给水排水, 2007, 23(9):89-91. LIU S P, WANG Q S, HE W J, et al. Comparison between coagulation/DAF and coagulation/sedimentation processes for treatment of micropolluted raw water[J]. China Water & Wastewater, 2007, 23(9):89-91.
[27]	贾伟建, 张克峰, 王永磊,等. 混凝-气浮处理低浊高藻水库水的试验研究[J]. 山东建筑大学学报, 2015,(1):41-46. JIA W J, ZHANG K F, WANG Y L, et al. Study on the treatment of low turbidity and high algal reservoir water by coagulation-floatation process[J]. Journal of Shandong Jianzhu University, 2015,(1):41-46.
[28]	刘善培. 强化混凝气浮工艺处理微污染原水的中试研究[D]. 天津:南开大学, 2007. LIU S P. Pilot test of enhanced coagulation-dissolved air flotation treating micro-polluted source water[D]. Tianjin:Nankai University, 2007.
[29]	吴玉宝, 王启山, 王玉恒, 等. 混凝-气浮除藻工艺中各参数的优化[J]. 中国给水排水, 2008, 24(3):95-99. WU Y B, WANG Q S, WANG Y H, et al. Optimization of parameters in coagulation/flotation process for algae removal[J]. China Water & Wastewater, 2008, 24(3):95-99.
[30]	EDZWALD J, HAARHOF J. Dissolved Air Flotation for Water Clarification[M]. McGraw Hill Professional, 2011.

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Construction and operation characteristics of countercurrent-cocurrent dissolved air flotation

逆向-同向流气浮工艺构建与运行特性

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