摘要
对传统升流式固体反应器(USR)进行改进,反应器内设置专用搅拌器,搅拌器间歇开启,在保留USR各项优势的前提下,使料液与厌氧微生物接触更充分,反应温度更均匀,提高产气率,同时还解决了传统USR的"结壳"问题,提高了反应器的传质效率、甲烷产气率和COD去除效果。进料含固量在12.1%时,水利停留时间为17 d,反应器最高容积负荷达到4.9 kg COD/(m3.d),产气速率为2.55 m3/(m3.d),产气率达到0.359 m3/kg干猪粪。
Improved USR reactor contains a newly dedicated blender which is intermittently operated. Keeping the advantages of traditional USR, a better feed-in material and micro-organisms mixing was obtained and the problem of crust in USR was solved in the improved reactor. The biogas production, biomass conversion efficiency, and COD removal efficiency, were all increased in the improved USR. With 12. 1% of TS feed-in material, 17 days HRT, the maximum load capacity reached 4.9 kg COD/（m^3·d） , the biogas production rate was 2.55 m3/（m^3·d） , and the material biogas productivity reached 0. 359 m^3/kg dry manure.
出处
《环境工程学报》
CAS
CSCD
北大核心
2009年第5期919-922,共4页
Chinese Journal of Environmental Engineering
