The tidal phenomenon of population in tourist villages is serious,the domestic sewage discharge law is complex,the environmental sensitivity is high,and the treatment mode is immature.Taking a tourist village in Fujian Province as an example,the study shows that the diurnal variation coefficient of discharge is uneven which of domestic sewage in tourist villages is as high as 3.3.Among them,the average daily inflow during the May Day,National Day and New Year's Day is 1.32times,1.53times and 2.67times of the annual average inflow respectively,which exceeds the designed treatment capacity of sewage treatment facilities in some periods;when the duration of holiday is short and there ara many single-day tourist,the COD concentration is stable at a high level,the average value is about 116.1mg/L,while the ammonia nitrogen concentration is stable at a low level,about 7.4mg/L;when the number of multi-day tourists and returnees increased at the end of the year,the lowest value of COD concentration decreased to 41mg/L,and the highest value of ammonia nitrogen concentration was about 69.1mg/L,the TP concentration increased significantly around the Spring Festival.In addition,when the wastewater treatment facilities utilize the A/O process,the COD concentration of the effluent consistently meets emission standards,but both the ammonia nitrogen and TP concentrations exceed the allowable limits.
tourist villagedomestic sewagedischarge lawtreatment model
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