The Technical Study Of Garbage Leachates With Blowing-Coagulance-SBR Method

The concentration of the pollution in garbage leachates is high, the virulence is great and the component is complex , which harms the biological environment and people' s health very seriously. It is a kind of tyapical highly polluted organic effluent which is dealt with difficulty.The laboratory test on blowing , coagulance , sequencing batch reactor process method in series. Blowing can take off the ammonic nitrogen efficiently, the rate of removing the ammonic nitrogen reaches 90%. Before the sequencing batch reactor, coagulance can take off virulence and decrease the pollution. As the reactor' s PH is 7. 5 and the process time is 24 hour , the sequencing batch reactorcan take off COD and the ammonic nitrogen efficiently. The mire pollution concentration, the quickly the sequencing batch reactor rate. At last, the doublecoagulance can get the water out well.In this experiment, we adopt the Blowing-Coagulance- Sequencing BatchReactor Process method and perform theoretical analyse and experimental study to the disposing technology of the leachates of the landfill ground in Chengdu. The study shows, the blowing-coagulance-SBR method used in disposing of garbage .Leachates is reasonable and feasible and we can obtain favourable result. Among them the rate of removing COD, NH₃-N and colour degree respectively reach 93. 05%, 98. 8%, 96. 67%. The COD, NH₃-N SS and colour degree in the water out all reach the "terminal value of discharging life garbage leachates standard" in the Controlling Standard of Sanitary Landfill Garbage (GB16899-1997) and the second standard of the water quality in the standard of Comprehensive Discharging the Polluted Water (GB8979-96).