ISO 18749:2004 水质-活性污泥吸附物质-使用特定分析方法一批试验
标准编号：ISO 18749:2004
中文名称：水质-活性污泥吸附物质-使用特定分析方法一批试验
英文名称：Water quality — Adsorption of substances on activated sludge — Batch test using specific analytical methods
发布日期：2004-02
标准范围
ISO 18749:2004规定了一种筛选试验方法，用于测定废水处理厂中活性污泥或初级污泥上物质的吸附程度。本国际标准中描述的条件通常对应于在试验期间在选定的活性污泥浓度和水硬度下发生吸附的最佳条件。该方法适用于具有足够准确度的分析方法的物质，并且在所用的试验条件和试验浓度下，是水溶性的；或者，如果仅微溶于水，则允许制备足够稳定的悬浮液、分散体或乳液；在测试过程中，通过已知的非生物过程如剥离或发泡从测试溶液中没有显著去除；不对活性污泥进行反絮凝；不易生物降解。
ISO 18749:2004 specifies a screening test method for the determination of the degree of adsorption of substances on to the activated sludge or primary sludge in a waste water treatment plant.The conditions described in this International Standard normally correspond to the optimum conditions for the adsorption to occur at the chosen activated-sludge concentration and water hardness during the test period.The method applies to substances for which an analytical method with sufficient accuracy is available and which, under the conditions of the test and at the test concentration used,
- are water-soluble;
- or, if only slightly water-soluble, allow sufficiently stable suspensions, dispersions or emulsions to be prepared;
- are not significantly removed from the test solution during the test by known abiotic processes such as stripping or foaming;
- do not deflocculate activated sludge;
- are not readily biodegradable.
标准预览图
