新华社北京８月１日电（记者张淼淼）经环境保护部污染减排工作核查组核定，２０１２年上半年与２０１１年上半年相比，北京市主要污染物二氧化硫、氮氧化物、化学需氧量和氨氮排放量分别下降了９．３６％、７．６３％、３．４７％和２．９２％，在全国处于较好水平。

    Beijing August 01 dec（Reporter ZhangMiaoMiao）The environmental protection department pollution reduction work inspectors for approval，In the first half of 2012 compared with the first half of 2011，The main pollutants sulfur dioxide、Nitrogen oxides、Chemical oxygen demand (cod) and ammonia nitrogen emissions were down 9.36%、7.63%、3.47% and 2.92%，In the national at a good level。

    据北京市环保局１日介绍，今年上半年国华、华能、京能、高井４大热电厂综合脱硝效率提高到５０％，对氮氧化物减排发挥了重要作用，占此项污染物减排量的９０％。

    According to the Beijing environment protection bureau 1 is introduced，In the first half of this year guohua、huaneng、Beijing can、Four thermal power plant takai has retired comprehensive denitration efficiency increased from 50% to，Emissions of nitrogen oxides has played an important role，Accounting for 90% of the pollutant emission reductions。

    另外，北京市不断推进清洁能源改造，对二氧化硫、氮氧化物这两项大气污染物的减排持续发挥了作用。监测数据显示，去年北京市完成的１２１８蒸吨燃煤锅炉清洁能源改造在今年发挥了效益，削减二氧化硫、氮氧化物１５９吨和１１７吨；推进结构调整和加大老旧机动车淘汰，也对大气污染物减排发挥了作用，去年底前北京关停了双山水泥等一批“三高”企业，今年上半年淘汰老旧机动车１７．５万辆。

    In addition，Beijing continue to promote clean energy transformation，so2、Nitrogen oxides that two of the atmospheric pollutants emission reduction continuous play a role。Monitoring data shows，Beijing last year of 1218 ZhengDun finish burning coal boiler clean energy transformation in play this year the benefits，Cut sulfur dioxide、The nitrogen oxide 159 tons and 117 tons；Advance structural adjustment and increase the old motor vehicle eliminated，Also of air pollutants emission reduction play a role，Before the end of Beijing eliminated cement and a number of shuangshan mountain“Three tenors”enterprise，In the first half of this year old motor vehicles out 175000 cars。

    在化学需氧量和氨氮两项“水污染物”减排方面，北京加快推进新建城镇污水处理设施投运、完善污水管网建设、增加污水处理量、促进水污染物农业源减排等，取得了明显成效。目前，北京中心城区新增日污水处理能力分别为４万吨、１５万吨和１０万吨的污水和再生水处理厂；中心城区高碑店污水处理厂、通州碧水污水处理厂分别日增加处理水量２．７３万吨和２．４５万吨，占生活源减排量的３０％；此外，２３个规模化养殖场开展了粪污治理工程。

    In the chemical oxygen demand (cod) and ammonia nitrogen two“Water pollutants”Reduction has，Beijing accelerating new urban wastewater treatment facilities are put into operation、Perfect the sewage pipe network construction、Increase the sewage process、Promote agricultural source water pollutants emission reduction, etc，Made outstanding achievements。At present，Beijing city center, new sewage treatment capacity for 40000 tons, respectively、150000 tons and 100000 tons of sewage and reclaimed water treatment plant；The city centre gaobeidian wastewater treatment plant、Tongzhou clear water sewage treatment plant, increase water respectively deal with 27300 tons and 24500 tons，Accounting for 30% of the life source reduction；In addition，23 scale farms in the dung and treatment project。

    北京市环保局相关负责人表示，尽管今年上半年北京市污染减排工作取得进展，但北京城镇人口增长带来的能源消耗和污染物排放量的增加，加重了污染减排工作压力。据环保部门分析，今年上半年北京污染减排量中的８５％只能用于抵消城镇人口带来的水污染物新增量；此外，虽然北京市加大了机动车淘汰力度，但上半年新增机动车带来的氮氧化物增量略高于淘汰老旧车的减排量，与削减量基本持平，减排形势依然严峻。 

    The Beijing environment protection bureau officials say，Although in the first half of this year the Beijing pollution reduction work progress，But Beijing urban population growth brings energy consumption and pollutant emissions increase，Increased pollution reduction work pressure。According to the environmental protection department analysis，In the first half of this year 85% of Beijing's pollution emission reductions can only be used to offset the urban population brought new increment water pollutants；In addition，Although Beijing increased the motor vehicle eliminated strength，But in the first half of the new vehicle bring nitrogen oxides slightly higher than the old old car out incremental emissions reductions，And cut is flat，Emission reduction is still serious situation。