Home / Standards / GB/T 22597-2014 GB/T 22597-2014 Active Determination of chemical oxygen demand of reclaimed wastewater―Potassium dichromate method 再生水中化学需氧量的测定 重铬酸钾法 Standard Type GBT ICS 71.040.40 CCS G76 Status 现行 Issue Date 2014-12-05 Implementation 2015-05-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A