[1]闻学政,宋伟,张迎颖,等.凤眼莲深度净化污水处理厂尾水的效果[J].江苏农业学报,2018,(05):1072-1080.[doi:doi:10.3969/j.issn.1000-4440.2018.05.015]
　WEN Xue-zheng,SONG Wei,ZHANG Ying-ying,et al.Effects of Eichhornia crassipes on advanced treatment of tail water in domestic sewage plant[J].,2018,(05):1072-1080.[doi:doi:10.3969/j.issn.1000-4440.2018.05.015]
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凤眼莲深度净化污水处理厂尾水的效果()
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江苏农业学报[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2018年05期
页码:
1072-1080
栏目:
耕作栽培·资源环境
出版日期:
2018-10-25

文章信息/Info

Title:
Effects of Eichhornia crassipes on advanced treatment of tail water in domestic sewage plant
作者:
闻学政; 宋伟; 张迎颖; 王岩; 秦红杰; 刘海琴; 邱园园; 严少华; 张志勇
(江苏省农业科学院农业资源与环境研究所,江苏南京210014)
Author(s):
WEN Xue-zheng; SONG Wei; ZHANG Ying-ying; WANG Yan; QIN Hong-jie; LIU Hai-qin; QIU Yuan-yuan; YAN Shao-hua; ZHANG Zhi-yong
(Institute of Agricultural Resource and Environmental Sciences,Jiangsu Academy of Agricultural Sciences,Nanjing 210014,China)
关键词:
凤眼莲; 污水处理厂尾水; 深度净化
Keywords:
Eichhornia crassipes; tail water in domestic sewage plant; advanced treatment
分类号:
X52
DOI:
doi:10.3969/j.issn.1000-4440.2018.05.015
文献标志码:
A
摘要:
通过构建三级凤眼莲深度净化塘,对村镇生活污水处理厂尾水进行深度净化。凤眼莲种苗初始投放量为0.60 kg/m2,三级凤眼莲深度净化塘总有效容积为7 500 m3,三级凤眼莲深度净化塘运行期间日均接纳一级A标准生活污水处理厂尾水1 024.50 t。在2015年6月至2015年10月的运行期间,凤眼莲总生物量增加了36.06倍,凤眼莲植株氮、磷累积总量分别增加了44.45倍、55.38倍；三级凤眼莲净化塘处理尾水效果显著,尾水总氮(TN)、总磷(TP)、铵态氮(NH+4-N)和硝态氮(NO-3-N)平均质量浓度分别由 (9.86±3.51) mg/L、(0.38±0.07) mg/L、(0.49±0.09) mg/L和 (7.91±2.27) mg/L降低至 (2.51±1.52) mg/L、(0.10±0.06) mg/L、(0.20±0.08) mg/L和 (1.90±1.46) mg/L,其中TN质量浓度下降值超过7.0 mg/L,各污染物去除率分别为 75.04%±9.02%、68.76%±15.81%、59.12%±13.37%、79.21%±13.91%。三级凤眼莲深度净化塘对尾水氮、磷的平均削减速率分别为 (1 004.01±471.68) mg/(m2·d)和(38.25±9.56) mg/(m2·d),其中,第一、第二级净化塘对总氮的总削减速率分别高达 (1 069.99±276.94) mg/(m2·d)、(1 374.11±1 089.69) mg/(m2·d)，对总磷的削减速率分别高达 (74.93±15.99) mg/(m2·d)、(30.65±25.01) mg/(m2·d)。运行期间,深度净化塘去除尾水氮、磷总量累计分别为1100.02 kg、40.36 kg,其中凤眼莲通过同化作用共吸收污水处理厂尾水中氮218.52 kg、磷20.22 kg,约占尾水氮、磷总削减量的19.78%、50.10%。利用综合水质标识指数对污水处理厂尾水和深度净化塘出水进行计算,结果表明污水处理厂尾水由5.322类降至3.410类,达到地表水环境质量标准Ⅲ类标准。
Abstract:
An ecological wastewater purifying project consisting of three ponds with Eichhornia crassipes was constructed for in-depth purifying tail water from a town-run wastewater treatment plant. The initial seedling quantity of Eichhornia crassipes was 0.60 kg/m2,and total effective volume of three stage purification pond was 7 500 m3. During operation of the deep purification pond,the acceptance for the first class of A standard of tail water from wastewater treatment plant was 1 024.50 t per day. During the execution of the project (June 2015 to October 2015),total biomass of Eichhornia crassipes increased 36.06 times. Nitrogen and phosphorus concentrations in Eichhornia crassipes increased 44.45 and 55.38 times,respectively. As the result showed,the ecological engineering could effectively remove nitrogen and phosphorus in the tail water. The concentrations of total nitrogen (TN),total phosphorus (TP),ammonium nitrogen (NH+4-N) and nitrate nitrogen (NO-3-N) of the tail water were reduced from (9.86±3.51) mg/L,(0.38±0.07) mg/L,(0.49±0.09) mg/L and (7.91±2.27) mg/L to (2.51±1.52) mg/L,(0.10±0.06) mg/L,(0.20±0.08) mg/L and (1.90±1.46) mg/L,respectively. TN concentration declined over 7.0 mg/L. The removal rates of TN,TP,NH+4-N,NO-3-N were 75.04%±9.02%,68.76%±15.81%,59.12%±13.37%,79.21%±13.91%,respectively. The average deceleration rates of nitrogen and phosphorus in the tailwater of three stage purification pond were (1 004.01±471.68) mg/(m2·d) and (38.25±9.56) mg/(m2·d),respectively. The nitrogen average deceleration rates in the tailwater of the first and second purification ponds were (1 069.99±276.94) mg/(m2·d) and (1 374.11±1 089.69) mg/(m2·d),respectively. And the phosphorus average deceleration rates in the tailwater of the first and second purification ponds were (74.93±15.99) mg/(m2·d) and (30.65±25.01) mg/(m2·d),respectively. The cumulative removal amount of nitrogen and phosphorus in the tail water by the purification pond was 1 100.02 kg and 40.36 kg. Nitrogen 218.52 kg and phosphorus 20.22 kg in the tailwater of sewage treatment plant were absorbed by Eichhornia crassipes through assimilation,accounting for 19.78% and 50.10% of total reduction of nitrogen and phosphorus in tail water. The comprehensive water quality identification index was used to calculate the effluent of the tail water from the sewage treatment plant and the deep purification pond. After deep purified by Eichhornia crassipes,the tail water reduced from class 5.322 to class 3.410,and reached the standard value of class Ⅲ of surface water.

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备注/Memo

备注/Memo:
收稿日期：2017-11-21 基金项目：江苏省农业科技自主创新基金项目[CX（16）1003-3]; 江苏省重点研发专项（BE2016338） 作者简介：闻学政(1986-),男,安徽天长人,硕士,助理研究员,主要从事污染水体生态修复研究,(E-mail)wenxuezheng1@163.com，宋伟为共同第一作者。 通讯作者：张志勇，(E-mail)jaaszyzhang@126.com
更新日期/Last Update: 2018-11-05