华东师范大学学报（自然科学版） ›› 2020, Vol. 2020 ›› Issue (1): 103-109.doi: 10.3969/j.issn.1000-5641.201831012

• 生态与环境科学 • 上一篇    下一篇

城市景观水体石灰控藻效应研究

周运昌1,2,3, 何岩1,2,3, 陈静涵1,2,3, 黄民生1,2,3   

  1. 1. 华东师范大学 生态与环境科学学院, 上海 200241;
    2. 华东师范大学 上海市城市化生态过程与生态恢复重点实验室, 上海 200241;
    3. 华东师范大学 崇明生态研究院, 上海 200241
  • 收稿日期:2018-12-29 发布日期:2020-01-13
  • 通讯作者: 何岩,女,副教授,硕士生导师,研究方向为水环境治理与修复.E-mail:yhe@des.ecnu.edu.cn E-mail:yhe@des.ecnu.edu.cn
  • 基金资助:
    国家科技重大专项（2018ZX07208008）；国家自然科学基金（41877477）；上海市科技创新重点项目（18DZ1203806）；上海市自然科学基金（16ZR1408800）；上海市浦江人才计划（16PJD023）

Performance of lime-based algae control in urban landscape water

ZHOU Yunchang1,2,3, HE Yan1,2,3, CHEN Jinghan1,2,3, HUANG Minsheng1,2,3   

  1. 1. School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China;
    2. Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, East China Normal University, Shanghai 200241, China;
    3. Institute of Eco-Chongming, East China Normal University, Shanghai 200241, China
  • Received:2018-12-29 Published:2020-01-13

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摘要： 以上海市古华园人工湖为研究对象，通过研究其藻华消长规律，考察了不同石灰投加量对城市景观水体的控藻效应及其氮磷营养盐变化.结果表明：古华园水体中藻类生物量呈明显季节性变化.投加石灰能够抑制藻类的生长，并且藻类生长的抑制效应随石灰的投加剂量增加而增强，其中当石灰投加量由0.02 g/L增加至0.2 g/L时，藻类生长抑制率由20%提升至45%.然而，当投加剂量由0.2 g/L增至0.5 g/L时，抑制率没有明显增加.因此，综合考虑石灰的抑藻效应以及经济成本等因素，最优的石灰投加剂量为0.2 g/L.不同石灰投加剂量下水体氮磷营养盐含量整体先增加后下降，最终达到动态平衡.该研究可为城市景观水体藻类控制提供新的思路.

关键词: 城市景观水体, 富营养化, 石灰, 控藻

Abstract: In this research, we studied the effect of lime dosages on algae control as well as the dynamic changes in nitrogen and phosphorus nutrients in urban landscape water based on the growth and decline of algae blooms at Guhua Park in Shanghai. The results showed clear seasonal variations in algae biomass in Guhua Park. The growth of algae could be inhibited by the addition of lime, and the inhibition performance improved with increases in lime dosage. Specifically, the algal inhibition rate ranged from 20% to 46% when the applied lime dosage increased from 0.02 g/L to 0.2 g/L. When the lime dosage increased from 0.2 g/L to 0.5 g/L, however, there was no significant increase in inhibition efficiency observed. Therefore, considering both algal inhibition efficiency and economic cost, the optimum dosage of lime is 0.2 g/L. Meanwhile, nitrogen and phosphorus nutrients in water initially increased and then decreased, reaching a final dynamic equilibrium. This study offers a new approach for algae control of urban landscape water.

Key words: urban landscape water, eutrophication, lime, algae control

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