Effects of Self-purification of River Water on Laundry Wastewater  

作　　者：Liya TAN Yili CHEN Liuying CHEN Linghan ZENG Yujie CAI Bingbing FENG Hai WANG 

机构地区：[1]School of Life Sciences, Shaoxing University

出　　处：《Agricultural Science & Technology》2017年第6期1023-1028,共6页农业科学与技术（英文版）

基　　金：Supported by Natural Science Foundation of China(31500321);Scientific Research Foundation of Shaoxing University(20145024)

摘　　要：[Objective] This study was conducted to investigate the effect of laundry wastewater on the quality of river water and the dilution purification effect of river water on laundry wastewater. [Method] The effects of laundry wastewater on the contents of total nitrogen(TN), total phosphorus(TP), suspended solids(SS), chemical oxygen demand(COD) and linear alkylbenzene sulfonic acid(LAS) were studied in 7 rivers of Shaoxing City. [Result](1) The contents of TN, TP, SS, COD and LAS increased by 92%, 99%, 340%, 351% and 923%, respectively, at the discharging moment of laundry wastewater; and(2) the five pollutional indexes significantly decreased over time, and especially 2 h after the discharge of laundry wastewater, compared with former the discharge of laundry wastewater, the contents of TN, TP, COD and LAS increased by 6%, 11%, 9% and13%, respectively,while the contents of SS still increased by 76%, i.e., SS required a longer time to achieve self-purification. [Conclusion] Laundry wastewater has some influence on thequality of river water, and the self-purification function of river water could effectively remove pollutants.[Objective] This study was conducted to investigate the effect of laundry wastewater on the quality of river water and the dilution purification effect of river water on laundry wastewater. [Method] The effects of laundry wastewater on the contents of total nitrogen （TN）, total phosphorus （TP）, suspended solids （SS）, chemical oxygen demand （COD） and linear alkylbenzene sulfonic acid （LAS） were studied in 7 rivers of Shaoxing City. [Result] （1） The contents of TN, TP, SS, COD and LAS increased by 92%, 99%, 340%, 351% and 923%, respectively, at the discharging moment of laundry wastewater; and （2） the five pollution- al indexes significantly decreased over time, and especially 2 h after the discharge of laundry wastewater, compared with former the discharge of laundry wastewater, the contents of TN, TP, COD and LAS increased by 6%, 11%, 9% and13%, respectively, while the contents of SS still increased by 76%, ie., SS required a longer time to achieve self-purification. [Conclusion] Laundry wastewater has some influence on thequality of river water, and the self-purification function of river water could effectively re- move pollutants.

关 键 词：Laundry wastewater SELF-PURIFICATION Total nitrogen Total phosphorus Linear alkylbenzene sulphonic acid 

分 类 号：X52[环境科学与工程—环境工程] X703