Zhao Le-Le, Li Xing, Yang Yan-Ling, Huang Jing, Chen Wei-Xiong
Institute of Architectural Engineering, Beijing University of Technology, Beijing 100124, China.
Huan Jing Ke Xue. 2011 Nov;32(11):3235-9.
The red water in the drinking distribution systems of a southern city was investigated by analysing the water quality, such as DO, residual chlorine, iron, manganese, iron bacteria and ammonia-oxidizing bacteria. The objectives of this study were to identify the reasons of red water with the aim to supply the answer to this problem. The results showed that the main compositions of the deposits were iron and manganese. There were manganese overstep (the maximum of Mn could reach to 0.33 mg x L(-1)) in the plant effluent with Larson ratios > 1 and the significant difference in water quantity, sulfate and electrical conductivity among the four plants. The density of the iron bacteria and ammonia-oxidizing bacteria (10(0)-10(3) MPN x mL(-1)) was high. The potential reason for the red water was the water corrosion of plant effluent. Secondly, the red water easily occurred in the distribution systems with lower DO and residual chlorine. In addition, serious nitrification caused microbiological corrosion was another vital reason. According to the research, the primary methods for controlling red water were proposed.
通过分析溶解氧（DO）、余氯、铁、锰、铁细菌和氨氧化细菌等水质指标，对南方某城市饮用水供水系统中的红水现象进行了调查。本研究的目的是找出红水产生的原因，以便解决这一问题。结果表明，沉积物的主要成分是铁和锰。水厂出水存在锰超标现象（锰的最大值可达0.33mg·L⁻¹），拉森比值>1，且四个水厂的水量、硫酸盐和电导率存在显著差异。铁细菌和氨氧化细菌的密度较高（10⁰ - 10³MPN·mL⁻¹）。红水产生的潜在原因一是水厂出水的水质腐蚀，二是在溶解氧和余氯含量较低的供水系统中红水容易出现，此外，严重的硝化作用导致微生物腐蚀是另一个重要原因。根据研究结果，提出了控制红水的主要方法。
