Home / Standards / GB/T 37528-2019 GB/T 37528-2019 Active General technical specification for biological filter for nitrogen removal 脱氮生物滤池通用技术规范 Standard Type GBT ICS 13.020 CCS J88 Status 现行 Issue Date 2019-06-04 Implementation 2020-01-01 Responsible Dept 国家发展改革委 Drafting Unit N/A