| Water is the basic element for life and health. Although78%of the Eatrh iscovered by water; the freshwater resource is very limited. The healthy and high-speeddevelopment for our society is deeply influenced by the lack of water resource andpollution of water environment. Consider the current situation for our country waterresource; particularly under the premise of the increasing demand for water resourcewhich is limited, people need to pay more attention to control pollution of water en?vironment in the process of water resource exploitation. The treatment and reuse orinnocent emission of waste water is a top priority. Even though the pollutant con?centration which is in polluted rivers and lakes or in regular waste water from lifeand production is not high, the huge pending handling capacity for it which is relatedto all respects of concerned fields such as life and production have been attached greatattentions by the concerned department. From sustainable development of society andpeople’s health, it’s imperative to repair surface water.This subject is to exploit one internal circulation balffed biofilm reactor frommany fields such as Physics, chemistry, materials science, microbiology andenvironmental science. This reactor uses various technologies to bring out the com?bination of nitrification and denitrification. It can effectively remove COD and TNunder the condition of lower C/N ratio. At the same time, the reactor can effectivelyrepair polluted surface water by different experiments which are the basis for thedevelopment and utilization of reactor later.Below are the results for this expeirment: 1. Porous ceramics carrier we used has good microbial adhesion ability. It caneffectively form a better Microbial community which is a good direction for Biofilmcarrier.1, ICBBR has a higher handling capacity for nitriifcation and denitriif-cation andlower cost than internal circulation gas litf type biofilm reactor before. It has a goodmarket prospect,3.This reactor shows N03~-N removal rate reached at5mg/(L*h) at which C/Nwas20:1. TN removal rate reached at4.35mg/(L*h). Because it has nitrifying bacteriaand denitrifying bacteria in the process of domestication for incompletely anaerobicenvironment, it can’t reach the best removal rate for anaerobic environment. Note: thebest removal rate is that NO3-N removal rate can reach at9.26mg/(L-h) at which C/Nwas6:1.4.It can remove NH+4-N and TN effectively in which C/N was5:1,NC>2~-N andNO3-N are not increased. It means that this reactor has a good capacity ofsimultaneous nitriifcation and denitrifi cation.5.Anammox and SND coexisted in ICBBR together because NH+4-N is removedeffectively and N02_-N and NO3-N are not increased in which C/N was2:1or1:1.According to the related document, from the perspective of electronic balance, it need2.38mgC/L to remove every1mgN/L from the perspective of electronic balance. Infact，C is not only the electron donor to provide electron for denitrification, but alsothe energy for metabolism and growth of microorganism.6.The combination of ICBBR and internal circulation gas lift type biofilm reactorcan repair surface water better. Ammonia removal percentage reached at90%whichcan improve the water environment and change seriously polluted bad category Vsurface water to category III water body for landscape. It provided the experimentaldata for surface water restoration and changed bad characters for water treatment. Itcan improve and beautify the environment. |
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