酱香型白酒废水典型处理工艺全流程分析OA

[Objective]In view of the large fluctuation of wastewater quality and quantity,complex wastewater quality components and difficult treatment of jiangxiangxing baijiu,a wastewater treatment project of a jiangxiangxing baijiu industry in Guizhou is taken as an example.The wastewater treatment process,main design parameters and operation effects are discussed.A refined control strategy for operation processes is proposed.On this basis,the characteristics and removal effects of pollutants such as chemical oxygen demand(COD),ammonia nitrogen,total nitrogen(TN),total phosphorus(TP)and suspend solid(SS)are analyzed and summarized,providing technical support for the construction and optimized operation of jiangxiangxing baijiu industry.[Methods]This paper focused on the actual project of jiangxiangxing baijiu wastewater,carried out sampling and analysis of the entire process,and studied in detail the water quality characteristics of wastewater from different brewing cycles.Standard test sieves and three-dimensional fluorescence spectroscopy were used to analyze the changes in total suspended solids(TSS)and dissolved organic matter(DOM)in jiangxiangxing baijiu wastewater.The efficiency of pollutant removal along the process was discussed.A refined control strategy for operation processes was proposed,and optimization suggestions were proposed for pretreatment,upflow anaerobic sludge bed(UASB),and deep treatment process units.[Results]The wastewater quality concentration of the waste water gradually increased with the increase of brewing rounds.In the sixth round of brewing,the concentration of each pollutant reached its maximum.The TSS of baijiu wastewater was dominated by impurities with particle size of 2-5 mm and 0.3-2.0 mm,and the DOM of baijiu wastewater was dominated by humic acids,microbial soluble metabolites,and fulvic acids.The combined process removed more than 95％of COD,ammonia nitrogen,TN,TP,SS and the total fluorescence intensity of the effluent DOM from the biochemical processing section was reduced by 47.26％.[Conclusion]The combined process has a good removal effect.However,the drum screen,UASB and deep treatment unit can be further optimized to achieve a more stable effluent.