中文摘要：

采用＂甲烷化＋半亚硝化＋厌氧氨氧化自养脱氮＂新工艺,实现了生活污水能源质回收及氮素低碳化去除.结果表明,联合工艺出水NH4＋-N≈0,NO2--N≤0.5 mg.L-1,NO3--N平均为3.6 mg.L-1,溶解性COD〈10 mg.L-1,去除率高达98%.其中采用升流式厌氧污泥固定床（UAFB）实现甲烷化,能去除80%以上的进水溶解性COD,甲烷平均日产气量为3.3 L,产气量与COD去除量之间的关系为0.3 L.g-1,39.2%的进水溶解性COD转化为CODCH4,只有6.52%转化为CODVFAs.采用序批式反应器（SBR）实现半亚硝化,亚硝化累积率达到97%,出水基本达到厌氧氨氧化进水基质配比（NH4＋-N∶NO2--N=1∶1.13）,半亚硝化的主要作用是转化NH4＋-N,转化率为36.59%.厌氧氨氧化（ANAMMOX）反应器氨氮去除量、亚硝态氮去除量和硝态氮生成量之比为1∶1.18∶1.25,总氮容积去除负荷为0.62 kg.（m3.d）-1,对氮素去除的贡献率为56.91%,为氮素脱除的主导工艺环节.新工艺通过厌氧产甲烷实现能源质回收,并通过亚硝化-厌氧氨氧化实现自养脱氮,为现有城市污水处理厂工艺改造提供了一种新的思路和技术.

英文摘要：

Using a innovative system consisted of methanogenesis,partial nitritation and anaerobic ammonium oxidation（ANAMMOX） reactors,simultaneous methane production and autotrophic nitrogen removal from domestic sewage was successfully achieved.The results showed that the effluent NH＋4-N of the combined treatment process was below the detection limit.The effluent NO-3-N and NO-2-N were less than 0.5 mg·L-1 and 3.6 mg·L-1,respectively.The effluent COD of the combined treatment process was 10 mg·L-1 and a COD removal rate of 98% was achieved.More than 80% COD was removed by the up-flow anaerobic sludge fixed bed（UAFB） and the anaerobic gas production was 3.3 L·d-1 with a methane yield of 0.3 L·g-1.About 39.2% of influent COD was removed in form of methane and about 6.52% was transferred to VFAs.Partial nitritation with high nitrite accumulation efficiency of 97% was realized in a Sequencing Batch Reactor（SBR）.Ammonium was partly oxidized to nitrite with an ammonium∶nitrite ratio of 1∶1.13,which was suitable for the sub-sequent ANAMMOX reaction.In terms of N balance,the N conversion rate of SBR was 36.59% while the anaerobic ammonium oxidation（ANAMMOX） reactor,which was the major system in nitrogen removal,removed 56.91% of N.The TN removal rate of the ANAMMOX reactor was 0.62 kg·（m3·d）-1 and the ratio of NH＋4-N removal∶NO-2-N removal∶NO-3-N generation was 1∶1.18∶1.25.The new process achieves energy recovery by reclaiming methane and autotrophic nitrogen removal by the partial nitritation-ANAMMOX process,and provides a new approach and technology for reforming of domestic wastewater treatment plants.