1.1 本规程涵盖了水动力分离器（HDS）的实验室验证标准，因为它与雨水径流中悬浮固体的去除有关。 1.2 HDS制造的处理设备作为离线或在线处理设备沿着雨水排放管道放置，以去除雨水径流中的悬浮固体和相关污染物。这些装置可用于去除本标准未涵盖的其他污染物。本标准中的标准特别涉及在受控实验室条件下去除二氧化硅颗粒，这被认为是预测实际雨水径流中雨水固体去除的适当替代品。 1.3 此做法为独立监管实体（统称为具有管辖权的机构（AHJ））提供了指导方针，以简化其管辖范围内HDS设备认证的数据要求。 对于任何给定的AHJ，也可能适用其他标准。 1.4 单位-- 以英寸磅为单位的数值应视为标准，但建立和报告沉积物浓度和颗粒尺寸的方法除外。按照惯例，仅以mg/L为单位描述沉积物浓度，以mm或μm为单位描述颗粒尺寸，这两种单位均为国际单位制。括号中给出的国际单位制是数学转换，仅供参考，不被视为标准单位。以英寸磅单位以外的单位报告试验结果不应被视为不符合本试验方法。 1.5 根据本规范获得的测试结果的验收可能符合质量保证项目计划（QAPP）、特定验证协议或AHJ设定的特定要求。 建议对上述一项或全部内容进行审查，以确保合规性。 1.6 本标准并不旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 注1: 本规程还旨在确保根据本文引用的ASTM测试方法完成测试所产生的数据可用于满足新泽西州环境保护部制造的处理装置（MTD）认证程序的要求。 1.7 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 ====意义和用途====== 4.1 本规程为验证水力分离器的二氧化硅沉积物去除效率提供了标准。 4.2 验证可用于支持不同AHJ内的技术认证，前提是: 4.2.1 HDS装置的大小使用最终的性能数据来处理规定的水质流速或年质量负荷要求，达到认证实体所需的性能水平。 4.2.2 将结果缩放到不同的MTD模型大小符合本标准。 4.2.3 该技术的设计与测试单元一致，从而使其在验证确定的特定限制以及认证实体施加的其他限制范围内运行。

1.1 This practice covers the criteria for the laboratory verification of Hydrodynamic Separators (HDS) as it relates to the removal of suspended solids in stormwater runoff. 1.2 HDS manufactured treatment devices are placed as offline or online treatment devices along storm drain pipe lines to remove suspended solids and associated pollutants from stormwater runoff. These devices may be used to target removal of other pollutants which are not covered in this standard. The criteria in this standard specifically relate to the removal of silica particles in controlled laboratory conditions, which is considered an appropriate surrogate for predicting the removal of stormwater solids from actual stormwater runoff. 1.3 This practice provides guidelines for independent regulatory entities, collectively referred to as Authority Having Jurisdictions (AHJs), to streamline data requirements for the certification of HDS devices within their jurisdiction. For any given AHJ, additional criteria may also apply. 1.4 Units— The values stated in inch-pound units are to be regarded as standard, except for methods to establish and report sediment concentration and particle size. It is convention to exclusively describe sediment concentration in mg/L and particle size in mm or μm, both of which are SI units. The SI units given in parentheses are mathematical conversions, which are provided for information purposes only and are not considered standard. Reporting of test results in units other than inch-pound units shall not be regarded as non-conformance with this test method. 1.5 Acceptance of test results attained according to this specification may be subject to specific requirements set by a Quality Assurance Project Plan (QAPP), a specific verification protocol, or AHJ. It is advised to review one or all of the above to ensure compliance. 1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Note 1: This practice is also intended to ensure that the data resulting from completion of testing in accordance with the ASTM test methods referenced herein can be utilized to satisfy the requirements of the New Jersey Department of Environmental Protection’s manufactured treatment device (MTD) certification process. 1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 4.1 This practice provides criteria for the verification of the silica sediment removal efficiency of hydrodynamic separators. 4.2 Verification can be used to support certification of the technology within different AHJs provided that: 4.2.1 HDS units are sized using the resulting performance data to treat the prescribed water quality flow rate or annual mass load requirement at the level of performance desired by the certifying entity. 4.2.2 Scaling of results to different MTD model sizes is in accordance with this standard. 4.2.3 The technology is designed consistently with the tested unit such that it operates within the specified limits determined by the verification as well as other restrictions placed by the certification entity.