反冲洗水化学可能会产生显著影响 过滤条件下对过滤水水质的不利影响 在某些情况下。水务设施 不利的反冲洗水化学会显著降低 改善水质，保护公众健康，帮助 通过应用信息确保法规遵从性 在本文中阐述。 根据治疗条件，延迟启动 反冲洗水的化学性质可以是 对过滤后的水质没有影响的作用很大。 事实上，众所周知，延迟启动在这方面效果良好 一些地点，而不是其他地点。 在本文中 作者解释了为什么这种技术可能或可能 可能无效，如何评估哪些方法 在特定设施中最有效。用这个 根据本文的见解，一些水供应商将能够 进行微小的操作更改，这将显著提高 改善其设施的过滤水质量。包括27个参考文献、图表。

Backwash water chemistry can have significant detrimental effects on filtered water quality under some circumstances. Water utilities experiencing adverse backwash water chemistry can significantly improve water quality, protect public health, and help ensure regulatory compliance by applying the information set forth in this article. Depending on the treatment conditions, delayed start and backwash water chemistry can range from playing a large role to having no effect on filtered water quality. Indeed, delayed start has been known to work well at some locations and not at others. In this article, the authors explain the details of why this technique may or may not be effective and how to evaluate what methods are most effective at a particular facility. Using this article's insights, some water suppliers will be able to make minor operational changes that will significantly improve filtered water quality at their facilities. Includes 27 references, figures.