ZHANGWen-qiang,LIULu,HUFei-chao,et al.Characteristics and Influencing Factors of Rural Domestic Sewage in Hunan Province[J].China Water & Wastewater,2023,39(21):55-60.
Characteristics and Influencing Factors of Rural Domestic Sewage in Hunan Province
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第21期
Page:
55-60
Column:
Date of publication:
2023-11-01
- Keywords:
- domestic sewage; pollution characteristics; influencing factor; Hunan Province; rural area
- Abstract:
- The field investigation of local farmers were carried out and different kinds of household sewage from 11 typical rural areas of Hunan Province with different terrains were sampled and monitored to analyze their pollution characteristics and influencing factors. The concentrations of pollutants in the wastewater from kitchen, washing and toilet were the highest from 06:00 to 10:00, 14:00 to 18:00 and 18:00 to 22:00, respectively. The maximum flow rate of household sewage was observed during the period from 18:00 to 22:00. The daily monitoring results showed that the quality of kitchen wastewater was poor in plain and hilly areas on weekends. The weighted median values of COD, SS, NH4+-N, TN and TP in mixed household sewage from kitchen, washing and toilet were 663.6 mg/L, 106.0 mg/L, 58.2 mg/L, 95.1 mg/L and 10.3 mg/L, respectively, and the C/N ratio was 7.0. The per capita daily flow rates of rural household were 77 L in plain, 53 L in mountainous area, and 50 L in hill region. The seasonal monitoring data showed that the quality of domestic sewage in hilly areas fluctuated greatly in seasons. The analysis of the influencing factors showed that terrain, season and income level were the main factors affecting the quality of rural domestic sewage in Hunan Province
Last Update:
2023-11-01