玉米淀粉废水强化混凝与反硝化脱氮除磷技术研究

郭晓娅; 年跃刚; 闫海红; 殷勤; 高鹏; 陈光伟

doi:10.3969/j.issn.1674-991X.2017.01.002

玉米淀粉废水强化混凝与反硝化脱氮除磷技术研究

doi: 10.3969/j.issn.1674-991X.2017.01.002

郭晓娅^1,2,
年跃刚^1,2,*, ,,
闫海红^1,2,3,
殷勤^1,2,3,
高鹏⁴,
陈光伟⁵

1.
环境基准与风险评估国家重点实验室,中国环境科学研究院,北京 100012
2.
中国环境科学研究院水污染控制技术研究中心,北京 100012
3.
北京师范大学水科学研究院,北京 100875
4.
中蓝连海设计研究院,上海 201204
5.
中粮生化能源(公主岭)有限公司,吉林四平 136100

详细信息

作者简介:
郭晓娅(1990—),女,硕士研究生,主要从事水污染控制与资源化技术研究, xiaoyaguo1990@163.com

通讯作者:
年跃刚 E-mail: nianyg@craes.org.cn

中图分类号: X703
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出版历程
- 收稿日期: 2016-03-21
- 刊出日期: 2017-01-20

Enhanced coagulation and nitrification for nitrogen and phosphorus removal from corn starch wastewater

GUO Xiaoya^1,2,
NIAN Yuegang^{1,2,*
, ,},
YAN Haihong^1,2,3,
YIN Qin^1,2,3,
GAO Peng⁴,
CHEN Guangwei⁵

1.
State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
2.
Research Center of Water Pollution Control Technology, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
3.
College of Water Science, Beijing Normal University, Beijing 100875, China
4.
China Bluestar Lehigh Engineering Corporation, Shanghai 201204, China
5.
COFCO Bio-chemical Energy(Gongzhuling)Company Limited, Siping 136100, China

More Information

Corresponding author: Yuegang NIAN E-mail: nianyg@craes.org.cn

摘要

摘要: 针对现行玉米淀粉废水处理工艺出水氮、磷易超标的问题,提出2种提高脱氮除磷潜能的解决方案:在预处理阶段设置混凝工艺强化去除部分污染物;在反硝化阶段引入部分竖流沉淀池(初沉池)出水作为补充碳源。通过设计单因素混凝试验,对比氯化铁、硫酸铝、壳聚糖、海藻酸钠4种絮凝剂对污染物的去除效果。结果表明:氯化铁较适合作玉米淀粉废水处理絮凝剂,当氯化铁投加量为0.40 g/L,pH为4,温度为35 ℃时,TP、SS、TN和COD_Cr的去除率分别为93.5%、94.8%、10.8%和10.7%。采用序批式反应器,研究了以淀粉废水处理过程中的初沉池出水作为反硝化碳源的污染物降解特性与动力学特性;分别采用基于Monod方程的微分方程模型和分段零级反应动力学模型拟合试验数据。结果表明:反硝化过程中存在$NO_{2}^{-}$-N积累现象,$NO_{2}^{-}$-N最大积累率为61%;采用基于Monod方程的微分方程模型,能够很好地拟合水解酸化段废水作为碳源的反硝化过程中$NO_{3}^{-}$-N、$NO_{2}^{-}$-N以及$NO_{x}^{-}$-N(N$NO_{3}^{-}$-N与$NO_{2}^{-}$-N当量总和)浓度的变化趋势,$NO_{3}^{-}$-N、$NO_{2}^{-}$-N以及$NO_{x}^{-}$-N的最大降解速率分别为24.21、12.78和15.97 mg/(g·h)(以MLVSS计);分段零级动力学模型能较好拟合$NO_{x}^{-}$-N浓度随时间的变化趋势,阶段1和阶段2的反硝化速率分别为16.09和8.71 mg/(g·h)(以MLVSS计)。
- 玉米淀粉废水 /
- 混凝 /
- 反硝化碳源 /
- 动力学模型
Abstract: Considering the limit-exceeding problems of nitrogen and phosphorus in current cornstarch wastewater treatment, two solutions were put forward: one is to remove some pollutants by enhanced flocculation at the pretreatment stage; the other is to utilize the effluent of primary sedimentation tank as a carbon source for denitrification. The wastewater was treated by ferric chloride, aluminum sulfate, chitosan, and sodium alginate as flocculants, and optimum conditions were determined by single factor coagulation tests. The results showed that the ferric chloride was the suitable flocculant for treatment of cornstarch wastewater. When the dosing quantity of ferric chloride coagulant was 0.40 g/L, pH was 4, temperature was 35 ℃, the removal rates of TP, SS, TN and COD_Cr were 93.5%, 94.8%, 10.8% and 10.7%, respectively. The pollutant degradation characteristics and dynamic characteristics were studied by sequencing batch reactor with the effluent of primary sedimentation tank as the carbon source for denitrification, and Monod equation and piecewise zero-order kinetic model were used to fit the experimental data. The results showed that $NO_{2}^{-}$-N accumulation was found in the denitrification process, and the accumulation rate was 61%. The predicted values of simulation parameters using Monod equation fit well with the measured data, and the maximum degradation rates of $NO_{3}^{-}$-N、$NO_{2}^{-}$>-N and $NO_{x}^{-}$-N were 24.21, 12.78 and 15.97 mg/(g MLVSS·h) respectively. The concentrations of $NO_{x}^{-}$-N was also fit well by piecewise zero-order kinetic model and the denitrification rates of stage 1 and 2 were 16.09 and 8.71 mg/(g MLVSS·h) respectively.
- cornstarch wastewater /
- coagulation /
- carbon source for denitrification /
- kinetic model

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参考文献(28)

[1]	高鹏, 年跃刚, 闫海红 , 等. 玉米深加工清洁生产技术的应用对废水处理效果的影响[J]. 环境工程技术学报, 2014,4(3):181-186. GAO P, NIAN Y G, YAN H H , et al. Effect of cleaner production of a corn starch enterprise on wastewater treatment effectiveness[J]. Journal of Environmental Engineering Technology, 2014,4(3):181-186.
[2]	MU T H, LIU Y, ZHANG M , et al. Protein recovery from sweet potato starch wastewater by foam separation[J]. Separation Science and Technology, 2014,49(14):2255-2260.
[3]	TIAN X, SHI Y X, LIN G L, et al. Study on environmental materials with treatment of sweet potato starch wastewater by hydrolysis acidification sedimentation process [C]//Advanced materials research.Switzerland:Trans Tech Publications, 2013: 49-52.
[4]	PU S Y, QIN L L, CHE J P , et al. Preparation and application of a novel bioflocculant by two strains of Rhizopus sp. using potato starch wastewater as nutrilite[J]. Bioresource Technology, 2014,162:184-191. doi: 10.1016/j.biortech.2014.03.124 pmid: 24747673
[5]	GAO Y, PENG Y, ZHANG J , et al. Biological sludge reduction and enhanced nutrient removal in a pilot-scale system with 2-step sludge alkaline fermentation and A ²/O process [J]. Bioresource Technology, 2011,102(5):4091-4097. doi: 10.1016/j.biortech.2010.12.051 pmid: 21232933
[6]	ZHANG L, ZHANG S, WANG S , et al. Enhanced biological nutrient removal in a simultaneous fermentation,denitrification and phosphate removal reactor using primary sludge as internal carbon source[J]. Chemosphere, 2013,91(5):635-640. doi: 10.1016/j.chemosphere.2012.12.071 pmid: 23411089
[7]	文辉, 陈云峰, 高良敏 . 不同碳源材料用于污水厂尾水生物反硝化碳源的效果研究[J]. 环境科学学报, 2011,31(3):499-504. WEN H, CHEN Y F, GAO L M . The effect of bio-denitrification of sewage plant wastewater using different carbon source materials[J]. Acta Scientiae Circumstantiae, 2011,31(3):499-504.
[8]	OVEZ B, OZGEN S, YUKSEL M . Biological denitrification in drinking water using Glycyrrhiza glabra and Arunda donax as the carbon source[J]. Process Biochemistry, 2006,41(7):1539-1544.
[9]	FERNÁNDEZ-NAVA Y, MARAÑÓN E, SOONS J , et al. Denitrification of high nitrate concentration wastewater using alternative carbon sources[J]. Journal of Hazardous Materials, 2010,173(1):682-688.
[10]	BERNET N, HABOUZIT F, MOLETTA R . Use of an industrial effluent as a carbon source for denitrification of a high-strength wastewater[J]. Applied Microbiology and Biotechnology, 1996,46(1):92-97.
[11]	郭晓娅, 年跃刚, 闫海红 , 等. 以玉米淀粉废水为反硝化碳源的污染物降解特征与微生物群落结构研究[J]. 环境工程技术学报, 2016,6(5):427-433. GUO X Y, NIAN Y G, YAN H H , et al. Pollutants degradation characteristics and microbial community structure using cornstarch wastewater as denitrification carbon source[J]. Journal of Environmental Engineering Technology, 2016,6(5):427-433.
[12]	国家环境保护总局. 水和废水监测分析方法[M]. 4版.北京: 中国环境科学出版社, 2002.
[13]	ÇOKGÖR E U, SÖZEN S, ORHON D , et al. Respirometric analysis of activated sludge behaviour:I.assessment of the readily biodegradable substrate[J]. Water Research, 1998,32(2):461-475.
[14]	WILDERER P A, JONES W L, DAU U . Competition in denitrification systems affecting reduction rate and accumulation of nitrite[J]. Water Research, 1987,21(2):239-245.
[15]	谢丽, 蔡碧婧, 杨殿海 , 等. 亚硝酸积累条件下反硝化脱氮过程动力学模型[J]. 同济大学学报(自然科学版), 2009,37(2):224-228. XIE L, CAI B J, YANG D H , et al. Kinetic model of denitrification process with nitrite accumulation[J]. Journal of Tongji University(Natural Science), 2009,37(2):224-228.
[16]	白凡玉, 岳秀萍, 段燕青 , 等. 以吡啶、喹啉和吲哚为单一碳源时反硝化过程中亚硝酸盐积累及动力学研究[J]. 环境工程学报, 2015,9(2):665-669. BAI F Y, YUE X P, DUAN Y Q , et al. Nitrite accumulation and kinetic study of denitrification with pyridine,quinolone and indole as sole carbon source[J]. Chinese Journal of Environmental Engineering, 2015,9(2):665-669.
[17]	KUJAWA K, KLAPWIJK B . A method to estimate denitrification potential for predenitrification systems using NUR batch test[J]. Water Research, 1999,33(10):2291-2300.
[18]	吴昊, 黄进刚, 陈建军 . 不同絮凝剂对淀粉废水除磷效果的研究[J]. 工业水处理, 2014(10):56-59. WU H, HUANG J G, CHEN J J . Research on the removing effect of phosphorus from starch wastewater by using different flocculants[J]. Industrial Water Treatment, 2014(10):56-59.
[19]	郭晓娅, 年跃刚, 闫海红 , 等. 水解酸化废水作为反硝化碳源的过程特征及其动力学分析[J]. 环境工程技术学报, 2016,6(6):539-546. GUO X Y, NIAN Y G, YAN H H , et al. Kinetics and process characteristics of hydrolysis-acidogenosis wastewater as denitrification carbon source[J]. Journal of Environmental Engineering Technology, 2016,6(6):539-546.
[20]	王少坡, 彭永臻, 王淑莹 , 等. 不同硝态氮组成下反硝化过程控制参数pH变化规律[J]. 高技术通讯, 2005,15(8):91-95. WANG S P, PENG Y Z, WANG S Y , et al. Effect of proportion of nitrate and nitrite on pH profiles during denitrification[J]. High Technology Letters, 2005,15(8):91-95.
[21]	付昆明, 曹相生, 孟雪征 , 等. 污水反硝化过程中亚硝酸盐的积累规律[J]. 环境科学, 2011,32(6):1660-1664. FU K M, CAO X S, MENG X Z , et al. Characteristics of nitrite accumulation during wastewater denitrification[J]. Environmental Science, 2011,32(6):1660-1664.
[22]	LI J M, LI J, ZHENG G H , et al. Effects of the COD/$NO_{3}^{-}$-N ratio and pH on the accumulation of denitrification intermediates with available pyridine as a sole electron donor and carbon source .[J]. Environmental Technology, 2008,29(12):1297-1306. doi: 10.1080/09593330802379672 pmid: 19149351
[23]	GLASS C, SILVERSTEIN J A . Denitrification kinetics of high nitrate concentration water:pH effect on inhibition and nitrite accumulation[J]. Water Research, 1998,32(3):831-839.
[24]	LI W, SHAN X Y, WANG Z Y , et al. Effect of self-alkalization on nitrite accumulation in a high-rate denitrification system:performance,microflora and enzymatic activities[J]. Water Research, 2016,88:758-765. doi: 10.1016/j.watres.2015.11.003 pmid: 26595097
[25]	VINCENT R, LAVERMAN A M, JOHNNY G , et al. Nitrite accumulation during denitrification depends on the carbon quality and quantity in wastewater treatment with biofilters.[J]. Environmental Science & Pollution Research International, 2015,22(13):10179-10188. doi: 10.1007/s11356-015-4196-1 pmid: 25693829
[26]	袁怡, 黄勇, 邓慧萍 , 等. C/N比对反硝化过程中亚硝酸盐积累的影响分析[J]. 环境科学, 2013,34(4):1416-1420. YUAN Y, HUANG Y, DENG H P , et al. Effect of C/N ratio on nitrite accumulation during denitrification process[J]. Environmental Science, 2013,34(4):1416-1420.
[27]	LEE N M, WELANDER T . The effect of different carbon sources on respiratory denitrification in biological wastewater treatment[J]. Journal of Fermentation and Bioengineering, 1996,82(3):277-285. doi: 10.1016/0922-338X(96)88820-9
[28]	HENZE M . Capabilities of biological nitrogen removal processes from wastewater[J]. Water Science & Technology, 1991,23(4/5/6):669-679.