WU Xue,ZHANG Ying,HE Jia,et al.Characteristics of Urban Residents Domestic Sewage in Dianchi Lake Watershed[J].China Water & Wastewater,2021,37(11 11):89-95.
Characteristics of Urban Residents Domestic Sewage in Dianchi Lake Watershed
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第37卷
Number:
11 11
Page:
89-95
Column:
Date of publication:
2021-06-01
- Keywords:
- Dianchi Lake Watershed; domestic sewage; domestic pollution load; phosphorus; per capital pollution coefficient
- Abstract:
- Domestic sewage is one of the main sources of pollution load in Dianchi Lake Watershed, and domestic sewage characteristics are the basis of taking specific measures to control the pollution. Phosphorus is the most common factor exceeding the water quality standard in Dianchi Lake Watershed and also one of the important causes for eutrophication of Dianchi Lake. Water quality and quantity of urban sewage and phosphorus content of common household washing products in Dianchi Lake Watershed were monitored. Average COD, TP, NH3-N and TN of domestic sewage were 527 mg/L, 13.586 mg/L, 53.825 mg/L and 82.47 mg/L, respectively, and the per capita pollution coefficients were 70.12 g/(person·d), 1.80 g/(person·d), 7.17 g/(person·d) and 10.97 g/(person·d),respectively. TP from household accounted for 60.0% of the total TP generation in the watershed and 65.6% of TP discharged into the lake. In Dianchi Lake Watershed, the per capita TP production of domestic detergents and toiletries was 1.93 g/(person·a), and the TP contribution from domestic detergents and toiletries was 7.9 tons in 2018, accounting for 0.3% of the TP production from urban living sources. The “phosphorus prohibition” in Dianchi Lake Watershed had achieved remarkable performance. The per capita pollution coefficient is an important parameter to determine the total pollution load, which may change with improving living standard. Establishing a long-term and continuous tracking system is necessary to promote accurate pollution control in the watershed. Comprehensive measures should be taken for phosphorus control, and non-point source pollution control should be strengthened while domestic sewage collection and treatment rate in the watershed is continuously improved.
Last Update:
2021-06-01