ISO 15522:1999 水质-水成份对活性污泥中微生物抑制作用的测定.

标准编号：ISO 15522:1999

中文名称：水质-水成份对活性污泥中微生物抑制作用的测定.

英文名称：Water quality — Determination of the inhibitory effect of water constituents on the growth of activated sludge microorganisms

发布日期：1999-06

标准范围

本国际标准规定了一种评估试验材料对植物生长的潜在毒性的方法活性污泥中存在的好氧细菌。抑制作用仅限于那些能够在选择的有机试验培养基上生长。该方法提供了在长达6小时的潜伏期内对微生物产生抑制作用的信息。本方法适用于水、废水和化学物质在以下条件下可溶:测试。需要特别注意挥发性或有色材料以及形成浑浊悬浮液或悬浮液的材料分散。注1:挥发性试验材料的结果应谨慎解释，并可能低估任何抑制作用由于难以维持试验瓶中的初始浓度，因此产生了影响。注2:可测试形成浑浊悬浮液或分散液的有色材料和低水溶性材料在许多情况下，使用颜色/浊度控制作为空白（见9.4）。注3:本试验不适用的试验材料对活性污泥微生物的抑制作用可以通过使用基于呼吸计量测量的抑制试验确定（见ISO 8192）。

This International Standard specifies a method for assessing the potential toxicity of a test material to the growth ofaerobic bacteria present in activated sludge. The inhibitory effect is restricted to those microorganisms capable ofgrowth on the chosen organic test medium.This method gives information on inhibitory effects on the microorganisms over incubation periods up to 6 h.This method is applicable to water, wastewater and chemical substances which are soluble under the conditions ofthe test. Special care is needed with volatile or coloured materials and materials which form turbid suspensions ordispersions.NOTE 1 Results with volatile test material should be interpreted with caution and are likely to underestimate any inhibitoryeffect because of the difficulties in maintaining the initial concentration in the test flasks.NOTE 2 Coloured materials and materials of low water-solubility which form turbid suspensions or dispersions can be testedin many cases using colour/turbidity controls as blanks (see 9.4).NOTE 3 Inhibitory effects on activated sludge microorganisms of test materials for which this test is not applicable can bedetermined by using an inhibition test based on respirometric measurements (see ISO 8192).

标准预览图