碱性发酵污泥脱水性能的变化及其原因分析

doi:10.3969/j.issn.0438-1157.2013.11.044

CIESC Journal ›› 2013, Vol. 64 ›› Issue (11): 4210-4215.DOI: 10.3969/j.issn.0438-1157.2013.11.044

碱性发酵污泥脱水性能的变化及其原因分析

朱建平¹, 彭永臻^1,2, 李晓玲¹, 苏高强², 王淑莹²

1. 哈尔滨工业大学城市水资源与水环境国家重点实验室, 黑龙江哈尔滨 150090;
2. 北京工业大学北京市水质科学与水环境恢复工程重点实验室, 北京 100022

收稿日期:2013-03-22 修回日期:2013-06-05 出版日期:2013-11-05 发布日期:2013-11-05
通讯作者: 彭永臻
作者简介:朱建平(1987-),男,硕士研究生。
基金资助:
国家自然科学基金项目(51178007)。

Change and mechanism of sludge dewaterability during alkaline fermentation

ZHU Jianping¹, PENG Yongzhen^1,2, LI Xiaoling¹, SU Gaoqiang², WANG Shuying²

1. State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, Heilongjiang, China;
2. Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing Institute of Technology, Beijing 100022, China

Received:2013-03-22 Revised:2013-06-05 Online:2013-11-05 Published:2013-11-05
Supported by:
supported by the National Natural Science Foundation of China(51178007).

摘要/Abstract

摘要： 通过控制温度在25℃和35℃,利用Ca(OH)₂和NaOH调节碱性发酵过程中pH至10,研究了碱性产酸发酵过程中碱性发酵液脱水性能的变化,并且分析了影响碱性发酵液脱水性能的因素。研究发现NaOH条件下得到的发酵污泥的脱水性能比Ca(OH)₂条件下得到的发酵污泥的脱水性能差,同种碱试剂条件下,35℃条件下的发酵污泥脱水性能比25℃条件下差。通过对溶解的蛋白和多糖含量的分析,得出在一定范围内,两者的含量与标准化CST(毛细吸水时间)存在较好的线性关系,并且单位多糖比单位蛋白更能引起发酵污泥脱水性能的恶化。通过对溶解的蛋白多糖结合Zeta电位、平均粒径分析,得出温度和Ca²⁺可能是引起碱性发酵污泥脱水性能差异的根本原因,Ca²⁺能中和胶体表面较多的负电荷,在污泥絮体之间起到良好的吸附架桥作用,从而不利于污泥的水解,抑制有机物的溶出,而有利于污泥的脱水。从脱水成本和产酸量综合分析,Ca(OH)₂比NaOH更适合作为碱试剂调节pH,25℃条件下更适合作为碱性发酵的温度。

关键词: 碱试剂, 脱水性能, 碱性发酵, Ca²⁺, 温度, 吸附架桥

Abstract: Change of sludge dewaterability during alkaline fermentation was investigated by controlling temperature at 25℃ and 35℃ and using Ca(OH)₂ and NaOH to adjust the pH of reactor.The factors influencing dewaterability of alkline fermentation sludge were analyzed.Alkaline fermentation sludge with pH adjusted by NaOH had poorer dewaterability than that with pH adjusted by Ca(OH)₂.Dewaterability of the sludge fermented at 35℃ was worse than the sludge fermented at 25℃ using the same alkaline fermentation.The CST(capillary suction time)correlated with the soluble proteins concentration in alkaline fermentation sludge within a certain range and the change of soluble carbohydrates concentration had a more remarkable influence on the CST than proteins.The analysis combining Zeta potential,particle size with soluble carbohydrates and proteins indicated that temperature and concentration of Ca²⁺ may be the cause for dewaterability difference of the sludge using different alkaline reagents.Ca²⁺ could neutralize more negative charge and act as a better bridging agent between flocs,which may inhibit sludge hydrolysis and dissolution of organics,but improve dewaterability of the sludge.From the angle of dewatering cost and SCFAs(short chain fatty acids)products,Ca(OH)₂ is a better alkaline reagent than NaOH to adjust the pH of sludge during alkaline fermentation.

Key words: alkaline reagent, dewaterability, alkaline fermentation, Ca²⁺, temperature, bridging agent

中图分类号:

X703

朱建平, 彭永臻, 李晓玲, 苏高强, 王淑莹. 碱性发酵污泥脱水性能的变化及其原因分析[J]. CIESC Journal, 2013, 64(11): 4210-4215.

ZHU Jianping, PENG Yongzhen, LI Xiaoling, SU Gaoqiang, WANG Shuying. Change and mechanism of sludge dewaterability during alkaline fermentation[J]. , 2013, 64(11): 4210-4215.

参考文献 23

[1]	Yuan Hongying,Chen Yinguang,Zhang Huaxing,Jiang Su,Zhou Qi,Gu Guowei.Improved bioproduction of short-chain fatty acids(SCFAs)from excess sludge under alkaline conditions[J].Environ.Sci.Technol.,2006,40(6):2025-2029
[2]	Zhang Dong,Chen Yinguang,Zhou Qi,Zheng Xiong. Understanding short-chain fatty acids accumulation enhanced in waste activated sludge alkaline fermentation:kinetics and microbiology[J].Environ.Sci.Technol.,2010,43(22):1867-1875
[3]	Feng Leiyu,Wang Hua,Chen Yinguang,Wang Qin. Effect of solids retention time and temperature on waste activated hydrolysis and short-chain fatty acids accumulation under alkaline conditions in continuous-flow reactors[J].Bioresource Technology,2009,100(1):44-49
[4]	Zheng Xiong,Chen Yinguang,Liu Chenchen.Waste activated sludge alkaline fermentation liquid as carbon source for biological nutrients removal in anaerobic followed by alternating aerobic-anoxic sequencing batch reactors[J].Chinese Journal of Chemical Engineering,2010,18(3):478-485
[5]	Ji Zhouying,Chen Yinguang.Using sludge fermentation liquid to improve wastewater short-cut nitrification denitrification and denitrifying phosphorus removal via nitrite[J].Environ.Sci.Technol.,2010,44(23):8957-8963
[6]	Zhu Xiaoyu,Chen Yinguang.Reduction of N2O and NO generation in anaerobic-aerobic(low dissolved oxygen)biological wastewater treatment process by using sludge alkaline fermentation liquid[J].Environ.Sci.Technol.,2011,45(6):2137-2143
[7]	Zhang Dong,Chen Yinguang.New sludge pretreatment method to improve methane production in waste activated sludge digestion[J].Environ.Sci.Technol.,2010,44(12):4802-4808
[8]	Zhang Dong,Chen Yinguang.A new process for efficiently producing methane from waste activated sludge:alkaline pretreatment of sludge followed by treatment of fermentation liquid in an EGSB reactor[J].Environ. Sci. Technol.,2011,45(2):803-808
[9]	Li Xiang,Chen Hong,Chen Yinguang.Pilot-scale waste activated sludge alkaline fermentation,fermentation liquid separation,and application of fermentation liquid to improve biological nutrient removal[J].Environ. Sci. Technol.,2011,45(5):1834-1839
[10]	Su Gaoqiang(苏高强),Huo Mingxin(霍明昕),Wang Chuanxin(汪传新),Zheng Bingyu(郑冰玉),Wang Shuying(王淑莹),Peng Yongzhen(彭永臻).Effects of base types on waste activated sludge alkline fermentation and dewaterability[J].Journal of Cival,Architectural & Environmental Engineering(土木建筑与环境工程),2013,35(1):140-146
[11]	Cao Yanxiao(曹艳晓),Long Tengrui(龙腾锐),Fu Chanyuan(付婵媛),Gong Zheng(龚正).Recycling dosage analysis of alkaline-hydrolysis supernatant of WAS as carbon source for denitrification[J].Journal of Civil,Architectural & Environmental Engineering(土木建筑与环境工程),2010,32(1):125-130
[12]	Yan Yuanyuan,Feng Leiyu,Zhang Chaojie,Christelle Wisniewski,Zhou Qi.Ultrasonic enhancement of waste activated sludge hydrolysis and volatile fatty acids accumulation at pH 10.0[J].Water Research,2010,44(11):3329-3336
[13]	State Environmental Protection Administration(国家环保总局).Water and Wastewater Monitoring and Analysis Methods(水和废水监测分析方法)[M].4th ed.Beijing:China Environmental Science Press,2002:200-284
[14]	Lowry O H,Rosebrough N J,Farr A L,et al.Protein measurement with the folin phenol reagent[J].Journal of Biological Chemistry,1951,193:265-275
[15]	Novak J T,Muller C D,Murthy S N.Floc structure and the role of cations[J].Water Science and Techmology,2001,44(10):354-359
[16]	Murthy S N,Novak J T.Factors affecting floc properties during aerobic digestion:implications for dewatering[J].Water Environment Research,1999,71(2):197-202
[17]	Zhu Rui(朱睿),Wu Min(吴敏),Yang Jian(杨健),Wei Chuanyin(魏传银),Zhang Bin(张滨).Influences of extracellular polymeric substances(EPS)on dewaterability of thickened sludge[J].Acta Scientiarum Naturalium Universitatis Pekinensis(北京大学学报:自然科学版),2010,46(3):385-388
[18]	Zhang Chao(张超),Li Bengao(李本高),Chen Yinguang(陈银广).Advance in the key factors affecting the dewaterability of waste activated sludge[J].Environmental Science & Technology(环境科学与技术),2011,34(6G):152-156
[19]	Yu Guanghui,He Pinjing,Shao Liming,He Peipei. Stratification structure of sludge flocs with implications to dewaterability[J].Environ.Sci.Technol.,2008,42(21):7944-7949
[20]	Guan Baohong,Yu Jie,Fu Hailu,Guo Minhui,Xu Xinhua. Improvement of activated sludge dewaterability by mild thermal treatment in CaCl2 solution[J].Water Research,2012,46(2):425-432
[21]	Bougrier Claire,Delgenes Jean Philippe,Carrere Helene. Effects of thermal treatments on five different waste activated sludge samples solubilisation,physical properties and anaerobic digestion[J].Chemical Engineering Journal,2008,139(2):236-244
[22]	Elisabeth Neyens,Jan Baeyens,Raf Dewil,Bart Deheyder. Advanced sludge treatment affects extracellular polymeric substances to improve activated sludge dewatering[J].Journal of Hazardous Materials,2004,106(2/3):83-92
[23]	Chen Yinguang,Jiang Su,Yuan Hongying.Hydrolysis and acidification of waste activated sludge at different pHs[J].Water Research,2007,41(3):683-689

碱性发酵污泥脱水性能的变化及其原因分析

Change and mechanism of sludge dewaterability during alkaline fermentation

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