多级内循环生物脱氮工艺试验研究的中期报告.docx

多级内循环生物脱氮工艺试验研究的中期报告

摘要：

本研究旨在探究多级内循环生物脱氮工艺的适用性及其处理效果。本中期报告主要介绍实验设计、实验过程及初步结果。

实验采用三组反应罐进行生物脱氮处理，分别为控制组、一级内循环组和两级内循环组。控制组采用传统的生物脱氮工艺，一级内循环组和两级内循环组分别增加了内循环系统。

实验结果显示，与控制组相比，加入内循环系统的一级和两级内循环组对氮的去除率均有所提高。其中，两级内循环组的去除效果最好，处理效率提高了5%。此外，在一级和两级内循环组中，硝化作用和反硝化作用在不同程度上得到了提高。

综上所述，多级内循环生物脱氮工艺能够有效提高脱氮效率，优化中小型生物脱氮工艺设计，对于生物脱氮技术的研究和应用具有重要意义。

关键词：多级内循环、生物脱氮、氮的去除率、硝化反硝化作用

Abstract：

Thepurposeofthisstudyistoexploretheapplicabilityandtreatmenteffectofmulti-stageinternalcirculationbiologicaldenitrificationprocess.Thismidtermreportmainlyintroducestheexperimentaldesign,experimentalprocessandpreliminaryresults.

Threereactiontankswereusedforbiologicaldenitrificationtreatmentinthisexperiment,namelythecontrolgroup,thefirst-stageinternalcirculationgroup,andthetwo-stageinternalcirculationgroup.Thecontrolgroupadoptedthetraditionalbiologicaldenitrificationprocess,andthefirst-stageandtwo-stageinternalcirculationgroupsrespectivelyaddedaninternalcirculationsystem.

Theexperimentalresultsshowedthatcomparedwiththecontrolgroup,thefirst-stageandtwo-stageinternalcirculationgroupswithinternalcirculationsystemsaddedimprovedthenitrogenremovalrate.Amongthem,thetwo-stageinternalcirculationgrouphadthebestremovaleffect,andthetreatmentefficiencywasincreasedby5%.Inaddition,inthefirst-stageandtwo-stageinternalcirculationgroups,thenitrificationanddenitrificationreactionswereimprovedtovaryingdegrees.

Inconclusion,multi-stageinternalcirculationbiologicaldenitrificationprocesscaneffectivelyimprovethedenitrificationefficiency,optimizethedesignofsmallandmedium-sizedbiologicaldenitrificationprocesses,andhasimportantsignificancefortheresearchandapplicationofbiologicaldenitrificationtechnology.

Keywords:multi-stageinternalcirculation,biologicaldenitrification,nitrogenremovalrate,nitrificationanddenitrificationreactions