零价铁-磷酸盐还原污泥体系除磷效果的研究  

Study on Phosphorus Removal Effect of Zero-valent Iron-phosphate Reduction Sludge System

作　　者：刘云龙 王冰[1] 孙冰 杨琳 Liu Yunlong;Wang Bing;Sun Bing;Yang Lin(College of Municipal and Environmental Engineering, Shenyang Jianzhu University, Shenyang 110000, China)

机构地区：[1]沈阳建筑大学市政与环境工程学院,辽宁沈阳110000

出　　处：《环境科学与管理》2022年第6期105-108,113,共5页Environmental Science and Management

摘　　要：磷酸盐还原污泥可以通过微生物作用将磷酸盐还原污泥为磷化氢气体,具有产物便于分离回收的优点,但由于磷化氢产量少,除磷效果较差所以难以投入实际应用。研究发现加入零价铁粉后的磷酸盐还原污泥的除磷效果与磷化氢产量都有较大的提高,磷最大去除率为39%,磷最大去除量为24 mg/L,磷化氢的累计产量为20 mg,相较于原污泥平均产量提高了1倍左右,并且发现在热力学上有零价铁参与的磷化氢产生途径有可能是一个放能反应。研究验证了零价铁粉-磷酸盐还原污泥联用体系的可行性,同时也提出了在热力学上合理的反应途径。Phosphate reduction sludge can be converted into hydrogen phosphate gas by microbial action,which has the advantage of easy separation and recovery of products.However,it is difficult to put into practical applicationdue to the low yield of hydrogen phosphate and poor phosphorus removal effect.The experimental study found that the phosphorus removal efficiency and hydrogen phosphate production of phosphate reduction sludge after adding zero-valent iron powder were greatly improved.The maximum removal rate of phosphorus was 39%,the maximum removal amount of phosphorus was 24 mg/L,and the cumulative production of hydrogen phosphate was 20 mg,which was about doubled compared with the average production of the original sludge.It was also found that the hydrogen phosphate production pathway involving zero-valent iron in thermodynamics might be an energy release reaction.This study verified the feasibility of the combined system of zero-valent iron powder and phosphate reduction sludge,and also proposed a reasonable thermodynamic reaction pathway.

关 键 词：磷酸还原污泥 磷化氢 零价铁 磷去除率 

分 类 号：X703.1[环境科学与工程—环境工程]