[1]邬振江,颜成,杨德坤,等.大型餐厨垃圾处理厂沼液处理工艺的运行效果分析[J].南京农业大学学报,2020,43(3):485-491.[doi:10.7685/jnau.201905028]
 WU Zhenjiang,YAN Cheng,YANG Dekun,et al.Investigation on purification efficiency of anaerobically digested slurry of restaurant food wastes from a large-scale treatment plant[J].Journal of Nanjing Agricultural University,2020,43(3):485-491.[doi:10.7685/jnau.201905028]
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大型餐厨垃圾处理厂沼液处理工艺的运行效果分析()
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《南京农业大学学报》[ISSN:1000-2030/CN:32-1148/S]

卷:
43卷
期数:
2020年3期
页码:
485-491
栏目:
生物与环境
出版日期:
2020-05-10

文章信息/Info

Title:
Investigation on purification efficiency of anaerobically digested slurry of restaurant food wastes from a large-scale treatment plant
作者:
邬振江12 颜成12 杨德坤1 梁剑茹1 王电站1 周立祥1
1. 南京农业大学资源与环境科学学院, 江苏 南京 210095;
2. 南京贝克特环保科技有限公司, 江苏 南京 211505
Author(s):
WU Zhenjiang12 YAN Cheng12 YANG Dekun1 LIANG Jianru1 WANG Dianzhan1 ZHOU Lixiang1
1. College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China;
2. Nanjing BACT Environmental Solutions Co. Ltd., Nanjing 211505, China
关键词:
餐厨沼液生化处理效果原因分析改进措施
Keywords:
anaerobically digested slurrybiochemical treatmenteffectivenesscause analysisimprovement measures
分类号:
X703
DOI:
10.7685/jnau.201905028
摘要:
[目的]本文通过现场调研代表性餐厨垃圾处理厂沼液处理工艺的生化效果,为已建成或待建的餐厨垃圾处理厂沼液达标处理工艺的选择或优化提供技术支撑。[方法]以河北省某大型餐厨垃圾处理厂沼液净化工艺"二相固液分离→气浮→混凝沉淀→生化处理→膜处理"为对象,通过测定该系统各单元出水水质指标,分析现行处理工艺存在的主要问题及其原因,在此基础上提出工艺改进建议。[结果]该餐厨沼液是一种高悬浮固体(SS)(26 400 mg·L-1)、高化学需氧量(COD)(29 440 mg·L-1)、高氨氮(3 512 mg·L-1)、高磷(433 mg·L-1)和高盐分(14 100 mg·L-1)的有机废水,由于其高浓度的污染负荷(特别是SS与NH4+-N)使现行工艺各单元对污染物(NH4+-N、TN、COD)的消减效果均很差,经过常规物化与生化处理后,NH4+-N、COD、TN、总磷(TP)和SS累积去除率分别为74.5%、89.5%、67.7%、97.7%和97.1%,其最终出水含量分别是895、3 100、1 246、9.89和760 mg·L-1,分别是设计出水标准的29.8、10.3、17.8、2.0和3.3倍,色度高达200(呈红褐色)。[结论]该工艺因生化单元内微生物活性极低甚至丧失活性,基本没有发挥正常降解COD和脱氮除磷的作用。SS和氨氮等去除不理想导致生化池进水污染负荷较高,是生化效果差的主要原因。为提高现行工艺特别是生化单元的净化效果,需彻底去除进水SS和大幅降低NH4+-N浓度,适当扩大生化池容积,提高沼液的可生化性,恢复生化池菌密度及活性。
Abstract:
[Objectives] In the study,a typical restaurant food waste(RFW)treatment plant was elaborately investigated with focus on the purification effectiveness of anaerobic digestate. The outcome of this study is conducive to developing or optimizing treatment process of digestate for RFW treatment plant. [Methods] We investigated the purification processes(solid-liquid separation→air flotation→coagulating and sedimentation→biochemical treatment→membrane treatment)of anaerobically digested slurry treatment system in a RFW treatment plant in Hebei Province,and suggested the improvement of processes based on the determination of water quality indexes of the effluent at different biochemical treatment stages. [Results] The anaerobically digested slurry was an organic wastewater with high concentration of SS(26 400 mg·L-1),COD(29 440 mg·L-1),NH4+-N(3 512 mg·L-1),TP(433 mg·L-1),and salinity(14 100 mg·L-1). Lower removal effectiveness of pollutants(NH4+-N,TN,and COD)in the present treatment system were mainly caused by high concentration of pollution load(especially SS and NH4+-N)in the influent for biochemical treatment system. It was found that the final effluent after biochemical treatment still contained 895 mg·L-1 NH4+-N,3 100 mg·L-1 COD,1 246 mg·L-1 TN,9.89 mg·L-1 TP and 760 mg·L-1 SS and with cumulative removal rate of 74.5%,89.5%,67.7%,97.7% and 97.1%,which were 29.8,10.3,17.8,2.0 and 3.3 times than those of the related designed discharge standards,respectively. The chroma was as high as 200(reddish brown). [Conclusions] The microorganisms with extremely low activity or even inactivation in biochemical pools didn’t play a role in effectively removing COD,N and P. In order to improve the purification efficiency of biochemical treatment,it’s necessary to thoroughly remove the SS and greatly reduce NH4+-N concentration of influent prior to biochemical treatment. In addition,appropriately expanding the volume of the biochemical pools,enhancing the biodegradability of anaerobically digested slurry,and increasing the microbial density and activity in biochemical pools also should be considered.

参考文献/References:

[1] 吴健. A-A-O-MBR组合工艺对餐厨废水深度脱氮的应用研究[D]. 无锡:江南大学,2014. Wu J. Application study of depth denitriifcation in food wastewater by A-A-O-MBR combined process[D]. Wuxi:Jiangnan University,2014(in Chinese with English abstract).
[2] 周立祥,颜成. 一种快速处理餐厨垃圾废水的生物聚沉氧化工艺:中国,CN105621806A[P]. 2016-06-01. Zhou L X,Yan C. A biological coagulation oxidation process for rapidly treating food waste wastewater:China,CN105621806A[P]. 2016-06-01(in Chinese).
[3] Sang H K,Hang S S. Effects of base-pretreatment on continuous enriched culture for hydrogen production from food waste[J]. International Journal of Hydrogen Energy,2008,33(19):5266-5274.
[4] 朱芸,王丹阳,弓爱君,等. 餐厨垃圾的处理方法综述[J]. 环境卫生工程,2011,19(3):50-52. Zhu Y,Wang D Y,Gong A J,et al. Overview of food residue treatment methods[J]. Environmental Sanitation Engineering,2011,19(3):50-52(in Chinese with English abstract).
[5] Dennehy C,Lawlor P G,McCabe M S,et al. Anaerobic co-digestion of pig manure and food waste;effects on digestate biosafety,dewaterability,and microbial community dynamics[J]. Waste Management,2018,71:532-541.
[6] 王佳君. 餐厨垃圾的厌氧发酵及资源化利用[D]. 哈尔滨:哈尔滨工程大学,2016. Wang J J. Anaerobic digestion and resource utilization for food waste[D]. Harbin:Harbin Engineering University,2016(in Chinese with English abstract).
[7] Lü F,Zhou Q,Wu D,et al. Dewaterability of anaerobic digestate from food waste:relationship with extracellular polymeric substances[J]. Chemical Engineering Journal,2015,262:932-938.
[8] 郭新愿,祁光霞,王永京,等. 餐厨垃圾废水制备液态固氮菌肥[J]. 环境工程学报,2017,11(9):4978-4984. Guo X Y,Qi G X,Wang Y J,et al. Preparation of liquid bacterial fertilizer of nitrogen-fixing bacteria from food waste-recycling wastewater[J]. Chinese Journal of Environmental Engineering,2017,11(9):4978-4984(in Chinese with English abstract).
[9] 赵凤敏,梅帅,曹有福,等. 基于沼液的培养基及产油小球藻藻种选育[J]. 环境科学,2014,35(6):2300-2304. Zhao F M,Mei S,Cao Y F,et al. Culture medium based on biogas slurry and breeding of oil Chlorella[J]. Environmental Science,2014,35(6):2300-2304(in Chinese with English abstract).
[10] 孙月驰,叶雅丽,肖宁,等. MBR工艺处理垃圾渗滤液几种典型工艺流程分析[J]. 中国给水排水,2014,30(12):5-8. Sun Y C,Ye Y L,Xiao N,et al. Analysis of several typical landfill leachate treatment methods using MBR process[J]. China Water & Wastewater,2014,30(12):5-8(in Chinese with English abstract).
[11] 郑俊,张德伟,冯晓明,等. 餐厨废水强化EGSB反应器处理焦化废水的启动[J]. 中国给水排水,2016,32(19):84-88. Zheng J,Zhang D W,Feng X M,et al. Start-up of EGSB reactor with addition of kitchen wastewater for treatment of coking wastewater[J]. China Water & Wastewater,2016,32(19):84-88(in Chinese with English abstract).
[12] 张周,赵明星,阮文权. 不同碳源对餐厨废水短程硝化反硝化处理效果的影响研究[J]. 环境工程,2018,36(7):46-50. Zhang Z,Zhao M X,Ruan W Q. Effect of different carbon sources on short-cut nitrification and denitrification treatment efficiency for food wastewater[J]. Environmental Engineering,2018,36(7):46-50(in Chinese with English abstract).
[13] 鞠晓丹,张云,李季,等. 餐厨垃圾废水与垃圾渗沥液混合生化预处理技术研究[J]. 环境卫生工程,2013,21(1):63-64. Ju X D,Zhang Y,Li J,et al. Biochemical pretreatment technology of wastewater from food waste and waste leachate[J]. Environmental Sanitation Engineering,2013,21(1):63-64(in Chinese with English abstract).
[14] 韩伟铖,颜成,周立祥. 规模化猪场废水常规生化处理的效果及原因剖析[J]. 农业环境科学学报,2017,36(5):989-995. Han W C,Yan C,Zhou L X. Investigation on water quality of the effluent of large-scale swine wastewater treatment plant[J]. Journal of Agro-Environment Science,2017,36(5):989-995(in Chinese with English abstract).
[15] 汪文强. 规模化猪场粪污废水常规生化/物化组合处理工艺的效果及存在问题[D]. 南京:南京农业大学,2018. Wang W Q. Effect and problems of conventional biochemical/physicochemical combined treatment process for manure wastewater in a large-scale swine wastewater treatment plant[D]. Nanjing:Nanjing Agricultural University,2018(in Chinese with English abstract).
[16] 邵一奇. 猪场废水厌氧消化液难以生化处理达标的成因探究[D]. 南京:南京农业大学,2018. Shao Y Q. Study on the causes of difficult biochemical treatment of anaerobic digestion of swine wastewater.[D]. Nanjing:Nanjing Agricultural University,2018(in Chinese with English abstract).
[17] Kalyuzhnyi S,Gladchenko M,Mulder A,et al. DEAMOX:new biological nitrogen removal process based on anaerobic Ammonia oxidation coupled to sulphide-driven conversion of nitrate into nitrite[J]. Water Research,2006,40(19):3637-3645.
[18] 祝超伟,毛金炼,何磊,等. A/O-MBR处理餐饮废水过程中DOM特性解析[J]. 环境科学与技术,2012,35(12):224-229. Zhu C W,Mao J L,He L,et al. Analysis of dissolved organic matter in restaurant wastewater during its treatment process by A/O-MBR[J]. Environmental Science & Technology,2012,35(12):224-229(in Chinese with English abstract).
[19] Quan Z X,Jin Y S,Yin C R,et al. Hydrolyzed molasses as an external carbon source in biological nitrogen removal[J]. Bioresource Technology,2005,96(15):1690-1695.
[20] Seviour R J,Mino T,Onuki M. The microbiology of biological phosphorus removal in activated sludge systems[J]. FEMS Microbiology Reviews,2003,27(1):99-127.
[21] 张自杰. 排水工程[M]. 北京:中国建筑工业出版社,2000. Zhang Z J. Drainage Engineering[M]. Beijing:China Building Industry Press,2000(in Chinese).
[22] Puig S,Corominas L,Balaguer M D,et al. Biological nutrient removal by applying SBR technology in small wastewater treatment plants:carbon source and C/N/P ratio effects[J]. Water Science and Technology,2007,55(7):135-141.
[23] 马东兵,岳峥,刘斌,等. MBR+NF/RO工艺处理垃圾渗滤液[J]. 中国给水排水,2014,30(12):9-11. Ma D B,Yue Z,Liu B,et al. MBR+NF/RO process for treatment of landfill leachate[J]. China Water & Wastewater,2014,30(12):9-11(in Chinese with English abstract).
[24] 中华人民共和国住房和城乡建设部. 室外排水设计规范:GB 50014-2006[S]. 北京:中国计划出版社,2016. Ministry of Housing and Urban-Rural Development of the People’s Republic of China. Outdoor drainage design specification:GB 50014-2006[S]. Beijing:China Planning Press,2016(in Chinese).
[25] Uygur A,Karg? F. Salt inhibition on biological nutrient removal from saline wastewater in a sequencing batch reactor[J]. Enzyme and Microbial Technology,2004,34(3/4):313-318.
[26] 叶韬,颜成,王电站,等. 规模化猪场粪污废水生物聚沉氧化新工艺及其生产性实验效果研究[J]. 环境工程学报,2018,12(9):2521-2529. Ye T,Yan C,Wang D Z,et al. A case study on effectiveness of a novel treatment process for purifying swine wastewater from large-scale piggery by using bio-coagulation dewatering followed by bio-oxidation[J]. Chinese Journal of Environmental Engineering,2018,12(9):2521-2529(in Chinese with English abstract).
[27] 张华生,邵一奇,颜成,等. 厌氧消化时间对猪场粪污废水理化性质及其生物沥浸效果的影响[J]. 南京农业大学学报,2019,42(1):124-129. DOI:10.7685/jnau.201804021. Zhang H S,Shao Y Q,Yan C,et al. Effect of anaerobic digestion time on physicochemical properties of swine wastewater and its bioleaching effectiveness[J]. Journal of Nanjing Agricultural University,2019,42(1):124-129(in Chinese with English abstract).

备注/Memo

备注/Memo:
收稿日期:2019-05-17。
基金项目:国家自然科学基金项目(21637003)
作者简介:邬振江,硕士研究生。
通信作者:周立祥,教授,研究方向为污水、污泥处理与处置研究,E-mail:lxzhou@njau.edu.cn。
更新日期/Last Update: 1900-01-01