柠檬酸-微波联合对污泥破解的研究
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摘要
对比研究了单独微波和柠檬酸-微波联合处理对污泥破解的影响。以微波辐射时间和微波功率为控制参数,研究了不同条件下污泥有机物溶出的情况和污泥沉降性能的变化。研究结果表明,在微波功率为616 W、辐射时间为150 s、投加0. 05g/g·SS柠檬酸处理污泥时,样品的溶出率为24. 66%,对比单独微波法作用,污泥有机物溶出明显增加;使用柠檬酸-微波联合破解污泥,可使污泥SV30降至21. 22%,SVI降至27. 99 m L/g,较单独微波法效果显著,可有效改善污泥沉降性能。
The effects of microwave alone and citric acid-microwave combining treatments on sludge disintegration are compared and studied.Taking microwave irradiation time and microwave power as control parameters,the dissolution of sludge organic matters and the change of sludge sedimentation performance under different conditions are studied.The research shows that the dissolution rate of organic matters can achieve 24. 66% when the microwave power is 616 W,the irradiation time is 150 s,and 0. 05 g·g-1·SS citric acid is added to treat the sludge.Compared with the microwave-alone method,the citric acid-microwave combining method can gain a significant higher dissolution of sludge organic matters.Using citric acid-microwave to disintegrate sludge,sludge SV30 can reduce to 21. 22% and SVI can drop to 27. 99 m L·g-1,which is more effective than using the microwave-alone method and can improve effectively the sludge settling performance.
The effects of microwave alone and citric acid-microwave combining treatments on sludge disintegration are compared and studied.Taking microwave irradiation time and microwave power as control parameters,the dissolution of sludge organic matters and the change of sludge sedimentation performance under different conditions are studied.The research shows that the dissolution rate of organic matters can achieve 24. 66% when the microwave power is 616 W,the irradiation time is 150 s,and 0. 05 g·g-1·SS citric acid is added to treat the sludge.Compared with the microwave-alone method,the citric acid-microwave combining method can gain a significant higher dissolution of sludge organic matters.Using citric acid-microwave to disintegrate sludge,sludge SV30 can reduce to 21. 22% and SVI can drop to 27. 99 m L·g-1,which is more effective than using the microwave-alone method and can improve effectively the sludge settling performance.
引文
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[11]Chang C J,Tyagi V K,Lo S L. Effects of microwave and alkali induced pretreatment onsludge solubilization and subsequent aerobic digestion[J]. Bioresource Technology,2011,102(17):7633-7640.
[12]Kavitha S,Adish K S,Yogalakshmi K N,et al.Effect of enzyme secreting bacterialpretreatment on enhancement of aerobic digestion potential of waste activated sludgeinterceded through EDTA[J].Bioresource Technology,2013,150(3):210-219.
[2]班福忱,刘明秀,李亚峰,等.城市污水处理厂污泥资源化研究探讨[J].环境科学与管理,2006,31(8):45-47.
[3]温超,曹珊珊,蒋雪,等.微波法处理污泥的研究进展[J].广州化工,2016,(3):8-10.
[4]闵甜,王林,曹珂,等.微波-柠檬酸浸出剩余污泥中重金属[J].应用化工,2012,41(12):2081-2084.
[5]Wawrzynczyk J,Recktenwald M,W O N,et al. Solubilisation of sludge by combined chemical and enzymatic treatment[J]. African Journal of Biotechnology,2007,6(17):1994-1999.
[6]Chen Y,Yang H,Gu G.Effect of acid and surfactant treatment on activated sludge watering and settling[J].Water Research,2001,35(11):2615-2620.
[7]Hii K,Baroutian S,Parthasarathy R,et al.A review of wet air oxidation and ThermalHydrolysis technologies in sludge treatment[J].Bioresource Technology,2014,155(4):289-299.
[8]国家环境保护总局《水和废水监测分析方法》编委会.水和废水监测分析方法(第四版)[S].北京:中国环境科学出版社,2002.
[9]Eskicioglu C,Kennedy K J,Droste R L. Enhancement of batch waste activated sludge digestion by microwave pretreatment[J].Water Environment Research A Research Publication of the Water Environment Federation,2007,79(11):2304-2317.
[10]梁仁礼,雷恒毅,俞强,等.微波辐射对污泥性质及脱水性能的影响[J].环境工程学报,2012,6(6):2087-2092.
[11]Chang C J,Tyagi V K,Lo S L. Effects of microwave and alkali induced pretreatment onsludge solubilization and subsequent aerobic digestion[J]. Bioresource Technology,2011,102(17):7633-7640.
[12]Kavitha S,Adish K S,Yogalakshmi K N,et al.Effect of enzyme secreting bacterialpretreatment on enhancement of aerobic digestion potential of waste activated sludgeinterceded through EDTA[J].Bioresource Technology,2013,150(3):210-219.