利用可生物降解聚合物同时作为反硝化微生物的碳源和附着载体研究

Nitrate Removal Using Biodegradable Polymers (DBPs) as Carbon Source and Biofilm Carrier of Denitrifying Microorganisms

饮用水源水中硝酸盐污染已引起世界各国的普遍关注,异养反硝化是去除水中硝酸盐的主要技术之一。利用可生物降解聚合物(biodegradable polymers,BDPs)同时作为反硝化微生物的碳源和附着生长的载体,近年来受到了人们的关注。该系统对进水水质的波动具有良好的适应能力;BDPs对人体无毒无害,不会污染出水水质。随着各种新型BDPs材料的不断涌现以及BDPs材料生产成本的降低,BDPs材料在饮用水源水生物脱氮中会得到越来越广泛的应用。对利用可生物降解聚合物进行反硝化的研究进展进行了综述。

Raw waters contaminated with nitrate present a serious problems to drinking water source in many countries. Heterotrophic denitrification is one of the main techniques to remove nitrate from water. Adopting economical solid organic carbon sources, such as cotton, wheat straw and so on, can simplify the treatment process and cut down the operational cost. However, it may deteriorate the effluent water quality when used for removing nitrate from drinking water. Denitriflcation system using biodegradable polymers （BDPs） as both carbon sources and biofilm carriers is capable of adapting to the loading shock of influent water quality and it will not contaminate the effluent water because they have no harmful impact to human health. With the development of new kinds of BDPs material and the reduction of BDPs production cost, BDPs may receive more and more attention in nitrate removal for drinking water source.