Different level should apply with different standards单位:mg/L表1地表水环境质量标准基本项目标准限值分类标准值N类V类序号1类I类■类项目人为造成的环境水温变化应限制在:周平均最大温升≤11水温(℃)周平均最大温降<226~9pH值(无量纲)饱和率90%36532溶解氧>(或7.5)4<2461015高锰酸盐指数<51515203040化学需氧量(COD)6≤363410五日生化需氧量(BOD,)70.52.0氨氮(NH.-N)0.151. 01.50.10.20.30.40.028总磷(以P计)≤(湖、库0.1)(湖、库0.2)(潮、库0.01)(湖、库0.025)(湖、库0.05)9总氮(湖、库,以N计)M0.51.01.50. 22.0《Waterquality standardfor surfacewater》(GB3838-2002)
《Water quality standard for surface water》 (GB3838-2002) Different level should apply with different standards
3 《Integrated wastewater discharge standard》(GB8978—1996)According to the acceptance of receiving environmental forwastewater, there were maximal emission concentrationstandards for 69 kind of pollutants and pollutants also hasmaximalallowabledischargevolume
3《Integrated wastewater discharge standard》 (GB8978-1996) According to the acceptance of receiving environmental for wastewater, there were maximal emission concentration standards for 69 kind of pollutants and pollutants also has maximal allowable discharge volume
最高允许排放浓度单位:mg/L(1998年1月1日后建设的单位)序污染物适用范围一级标准二级标准三级标准号1pH一切排污单位6~96~96~92 50 80一切排污单位-色度(稀释倍数)70-300采矿、选矿、选煤工业70-脉金选矿4003悬浮物70800一边远地区砂金选矿2030-城镇二级污水处理(ss)70150400其他排污单位甘蔗制糖、苎麻脱胶、湿法纤维板、染260 600料、洗毛工业五日生化需氧量甜菜制糖、酒精、味精、皮革、化纤浆粘20 100600 4工业(BOD:)-2030 城镇二级污水处理厂30 20 300 其他排污单位
最高允许排放浓度 (1998年1月1日后建设的单位) 单位:mg/L