农村牧区生活垃圾处理的清洁高温共燃炉设备研究与产业化应用

为了进一步完善农村生活垃圾处理方式,切实改善农村人居环境,助力乡村振兴,我公司研发了一种针对人口分散的农村牧区生活垃圾就地处置的清洁高温共燃炉。该设备采用下燃式焚烧工艺,有垃圾一燃室和烟气二燃室;整体工艺为“SNCR脱硝+双碱法脱硫+布袋除尘器除尘+喷淋塔+活性炭吸附”。该设备在实现烟气达标排放的同时,还具有投资费用低、选址灵活等优点,已在鄂尔多斯市多地推广使用。     

Membrane combination technic on treatment and reuse of high ammonia and salts wastewater in rare earth manufacture process

With the rapid development of rare earth industry in China,high NH3-N and high salts wastewater generated in rare earth manufacture process had caused serious environment pollution especially for surrounding water body.Traditional treatment processes were either incapable of reducing pollutants concentration to the levels regulated by law or prohibitively expensive and difficult to operate.In this paper,a hybrid process which integrated air stripping pretreatment and low pressure reverse osmosis(LPRO) was proposed to treat this wastewater containing high ammonia and salt.Mechanism of treatment and remediation of ammonia and salt polluted water body was investigated.Influences of temperature,pH,and air stripping time on removal ratio of ammonia efficiencies were also discussed.Relationship among trans-membrane pressure drop(ΔP),additions ratio,stability of membrane and the possibility of water reuse were studied.The results showed that removal ratio of ammonia after LPRO desalination process could reach up to 98%,fluoride amounted to more than 99% and desalt efficiencies reached up to 95%,and stripped gas ammonia could be effectively recovered.Water quality had been improved significantly to meet reuse or discharge standards.