CAJ | 학술논문

采用表面流人工湿地系统静态小试装置,考察了低、中、高3组不同进水COD/N(2,5,10)对系统中氮、磷及COD去除效果的影响.结果表明:进水C/N的变化对COD的去除率影响不大,平均去除率达到94.6%.TN的去除率随着COD/N的增大而逐渐升高,在C/N=5时达到63, 8%,继续提高COD/N,TN的去除率变化不大.NH_4~+ -N去除率随着COD/N的增加而降低.随着碳源的增加,释磷菌能够从进水中获得充足的碳源,从而可以比较充分地释磷,因此,磷的去除率随COD/N的增加而提高.
채용표면류인공습지계통정태소시장치,고찰료저、중、고3조불동진수COD/N(2,5,10)대계통중담、린급COD거제효과적영향.결과표명:진수C/N적변화대COD적거제솔영향불대,평균거제솔체도94.6%.TN적거제솔수착COD/N적증대이축점승고,재C/N=5시체도63, 8%,계속제고COD/N,TN적거제솔변화불대.NH_4~+ -N거제솔수착COD/N적증가이강저.수착탄원적증가,석린균능구종진수중획득충족적탄원,종이가이비교충분지석린,인차,린적거제솔수COD/N적증가이제고.
The effects of different influent COD/N ratios (2,5,10) on the removal efficiency of total nitrogen, phosphorus and COD were investigated in surface-flow constructed wetlands. The results showed that regardless of the COD/N ratio, excellent COD (average 94.6%) removal efficiency was maintained throughout the experiment. TN removal efficiency was enhanced as COD/N ratio increased, and reached to 63.8% when COD/N was 5. Afterwards, it increased very slowly. NH_4~+ -N removal efficiency decreased as COD/N ratio increased.With the increase of COD/N ratio, more phosphorous was removed because PAOs could get more organic carbon source from the influent to release more phosphorus.