本文件规定了工业废水分类的原则、类别和代码，适用于所有类型和来源的工业废水。它提供了一个广泛的框架，根据行业类型和相关水质成分（即物理、化学和生物特征）将工业废水分为不同的类别，并根据行业类型和废物流分类指定了特定代码。

This document specifies the principles, categories, and codes for the classification of industrial wastewater and is applicable to all types and sources of industrial wastewater. It provides a broad framework classifying industrial wastewater into different categories based on industry type and the associated water quality constituents, namely physical, chemical and biological characteristics with a specific code assigned based on both industry type and waste-stream classification.