城市生活垃圾填埋场渗沥液处理的试验研究

STUDY ON TREATMENT OF INFILTRATION LIQUID OF DOMESTIC REFUSE FILLING-UP FIELD

垃圾渗沥液特点是COD、BOD_5、NH_3—N浓度高,但生化性较好.本试验采用复合式厌氧反应器→鼓风吹脱塔→淹没式生物膜A/O池→二沉池→混凝沉淀流程处理深圳市玉龙坑生活垃圾填埋场渗沥液,当进水COD=25000mg/L,BOD_5=15000mg/L,NH_3—N=1000mg/L左右时,处理后出水COD<500mg/L,BOD_5<300mg/L,NH_3—N<25mg/L,达到了排放标准,为工程设计提供了必要的设计参数.

The refuse infiltration liquid with high COD, BOD and NH3 -N content is well bio-chemically treatable. The urban refuse infiltration liquid of Yulongkeng refuse field in Shenzhen city, Guangdong province was treated by composite process consisting of Anaerobic reactor-Air Stripping tower-submerged A/O bio-film reactor-secondary sedimentation tank-Coagulating sedimentation. When the influent COD = 25000mg/l, BOD=15000mg/l and NH3 -N = 1000mg/l, those of effluent are <500mg/ 1, <300mg/l and <25mg/l respectively to meet the requirement of wastewater discharge. The necessary parameters for engineering design have been recommended.