镧改性吸附剂废水除磷技术研究进展

磷是水体富营养化的重要限制性因子,也是废水中难以去除的物质。当前世界水体富营养化形势十分严峻,部分地区出现的水质性缺水已经影响到人们的生活和健康。随着社会对水体富营养化的关注不断提高和国家对水体富营养化的治理不断加强,排放废水中的磷含量控制越来越严格。因此,寻找高效、廉价、可行的废水除磷方法显得尤为重要。镧改性吸附剂除磷在费用投入和除磷效果等方面都具有明显优势,应用前景十分广阔。为进一步促进镧改性吸附剂除磷研究的深入开展,文章综述了镧改性吸附剂除磷的原理、常用镧改性吸附剂的种类及其研究现状、镧改性吸附剂除磷的影响因素等,展望了镧改性吸附剂除磷的应用前景,并指出了镧改性吸附剂除磷的不足和今后需要重点研究的方向。

The Research Process of Lanthanum-modified Adsorbents in Phosphorus Removal in Wastewater

Phosphorus is an important restrictive element for the eutrophication of water bodies and it is very hard to remove phosphorus from wastewater.Nowadays,the eutrophication of water bodies is very seriously in China and the world and the water quality-induced water shortage in some area had influenced people`s lives and health.More and more attention has been paid to water body eutrophication and the treatment on water body eutrophication is gradually strengthened simultaneously.And the requirement on the restriction of the phosphorus concentration in waste effluent will be more and more strict.Therefore,it is a very important task to find effective,cheap and feasible methods to remove phosphorus from waste water.Lanthanum-modified adsorbents have lots of advantages in phosphorus removal and fund input,and its application perspective is very great.In order to promote the development of the research on the lanthanum-modified adsorbents method in phosphorus removal,the principle of lanthanum-modified adsorbents in phosphorus removal,the species of lanthanum-modified adsorbents and its research process,the influence factors of lanthanum-modified adsorbents in phosphorus removal were reviewed,and the application perspective of lanthanum-modified adsorbents in phosphorus removal was looked into,the shortcomings and development trends of lanthanum-modified adsorbents were pointed out simultaneously.