降解畜禽养殖废水污泥的优势菌株筛选及其性能研究
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摘要
为了实现畜禽养殖废水处理过程中污泥的减量化,从不同样品中筛选得到8株污泥降解菌。以污泥作为唯一的碳源和能源来验证8株菌的污泥降解效果,最终得到3株污泥降解优势菌株,分别为嗜线虫沙雷氏菌Serratia nematodiphila H1、产吲哚金黄杆菌Chryseobacterium indologenes B4和苍白杆菌Ochrobactrum thiophenivorans D7。其中嗜线虫沙雷氏菌H1对污泥的可挥发性悬浮固体(volatile suspended solids,VSS)去除率最高,达52. 9%,比对照组的41. 6%提高27. 2%;产吲哚金黄杆菌B4和苍白杆菌D7对污泥的VSS去除率次之,分别为48. 6%和47. 5%,比对照组提高16. 8%和14. 2%,均有显著的污泥降解效果。
In order to achieve the reduction of sludge during the livestock and poultry breeding wastewater treatment,8 strains of sludge degradation were screened from different samples,and the effects of the sludge degradation were verified with sludge as the sole carbon and energy source. Three dominant strains of sludge degradation were obtained and were identified as Serratia nematodiphila H1,Chryseobacterium indologenes B4 and Ochrobactrum thiophenivorans D7. Among them,the VSS removal rate of strain H1 was the highest,reaching 52. 9%,which was 27. 2% higher than that of the control 41. 6%. The VSS removal rate of the strains Chryseobacterium indologenes B4 and Ochrobactrum thiophenivorans D7,in order,were 48. 6% and 47. 5%,which were 16. 8% and 14. 2% higher than those of the control,respectively.These results showed that the three strains all had the significant effects of sludge degradation.
In order to achieve the reduction of sludge during the livestock and poultry breeding wastewater treatment,8 strains of sludge degradation were screened from different samples,and the effects of the sludge degradation were verified with sludge as the sole carbon and energy source. Three dominant strains of sludge degradation were obtained and were identified as Serratia nematodiphila H1,Chryseobacterium indologenes B4 and Ochrobactrum thiophenivorans D7. Among them,the VSS removal rate of strain H1 was the highest,reaching 52. 9%,which was 27. 2% higher than that of the control 41. 6%. The VSS removal rate of the strains Chryseobacterium indologenes B4 and Ochrobactrum thiophenivorans D7,in order,were 48. 6% and 47. 5%,which were 16. 8% and 14. 2% higher than those of the control,respectively.These results showed that the three strains all had the significant effects of sludge degradation.
引文
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[15]杨悦,王云龙,杨尚源,等.嗜热微生物及其降解剩余污泥的机理[J].应用生态学报,2012,(7):2026-2030.
[2]肖鸿,樊明灏,彭宏,等.处理畜禽废水的序批式生物膜反应器中的细菌多样性[J].环境工程学报,2012,6(7):2333-2338.
[3]周立平,高程达,刘克锋.畜禽养殖废水处理技术的研究探讨[J].湖南饲料,2017,(2):28-30.
[4]高雅彬,丁红,申鹏.畜禽养殖废水处理技术研究进展[J].山西农经,2017,(12):34-35.
[5]赵思琪,任勇翔,杨垒,等.异养硝化复合菌强化处理含氮废水脱氮性能研究[J].工业微生物,2018,48(1):22-29.
[6]任皓甜,袁林江.磷酸盐浓度及p H对聚磷菌吸磷能力的影响[J].工业微生物,2018,48(4):17-23.
[7] ZHANG Z Q,ZHOU Y,ZHANG J,et al. Effects of short-time aerobic digestion on extracellular polymeric substances and sludge features of waste activated sludge[J]. Chem Eng J,2016,299:177-183.
[8]李航,吕利平,江波.污泥减量化技术研究进展及趋势[J].绿色科技,2016,(18):34-36.
[9]杨悦.污泥消化优势嗜热菌筛选及其作用效果研究[D].浙江大学,2012.
[10] LI X S,MA H,WANG Q,et al. Isolation,identification of sludge-lysing strain and its utilization in thermophilic aerobic digestion for waste activated sludge[J]. Bioresour Technol,2009,100(9):2475-2481.
[11]乔长晟,王羿超,任友花.筛选制备微生物菌剂降解剩余污泥[J].环境工程学报,2017,(3):1842-1850.
[12] LIU Y J,GAO M,ZHANG A N,et al. Strengthen effects of dominant strains on aerobic digestion and stabilization of the residual sludge[J]. Bioresour Technol,2017,235:202-210.
[13] MOHD YASIN N H,SANCHEZ-TORRES V,MAEDA T. Enhanced reduction of waste activated sludge at a low temperature by locally isolated strains Pseudomonas sp. VNT and Aeromonas sp.VNT[J]. Bioresour Technol,2014,174:134-141.
[14]夏汝飞,刘永军.剩余活性污泥好氧消化优势菌株筛选及污泥稳定化效果分析[J].环境工程学报,2017,(3):1941-1946.
[15]杨悦,王云龙,杨尚源,等.嗜热微生物及其降解剩余污泥的机理[J].应用生态学报,2012,(7):2026-2030.