Denitrification Based On Sieve Tray Tower Biofilm Reactor

At present,China's water resources are gradually becoming increasingly tense,and we must pay more attention to water resources waste and sewage treatment.As we all know,high-efficiency sewage recycling is of great significance for reducing water pollution and protecting water resources.Minimizing water waste and pollution can promote the coordinated development of resources and environment as much as possible,and can realize the current social economy to the maximum extent.Benefits,social benefits and environmental benefits that cannot be ignored.Therefore,reclaimed water reuse is one of the important means to solve the water shortage.The research on the advanced treatment process of the tail water of the urban sewage treatment plant is effective in alleviating the increasingly tight water resources in China and promoting the rapid development of the economy.means.This study combines knowledge of chemical engineering,microbiology,and environmental science to develop a sieve tray biofilm reactor that integrates technologies,with short start-up times and high carbon source utilization.Low energy consumption,efficient use of carbon sources for denitrification,and efficient removal of NO₃^--N,TOC or COD under different C/N ratio conditions.At the same time,the pilot test is carried out on the basis of the small test,in order to effectively use the advanced treatment of the tail water of the sewage treatment plant,which will provide a better practical basis for the development and utilization of the reactor in the future.Promote the rapid development of the economy.The results of this study are as follows:?1?The sieve tray reactor has a good denitrification function,which lays a good practical foundation for the advanced treatment of sewage,and has great potential value and research and development value.?2?The sieve tray bioreactor has a high utilization rate of carbon sources.At a lower C/N ratio,effective removal of NO3--N can also be achieved,but the same degree of denitrification is achieved,and the time is longer.The carbon source utilization rate is higher at low C/N ratios,but the relative rate is slower.If the C/N ratio is increased,the utilization of the carbon source is lowered.?3?In the sieved tower biofilm reactor under the pilot test,the average removal load of TN reached 2.9(mgL^–1h^–1)during the denitrification process.The carbon source utilization rate is high,and the TN removal rate in the tail water can be increased by 25%to 40%based on the prior art treatment effect,and the reactor still has a high denitrification efficiency under low temperature conditions.?4?The sieve tray biofilm reactor operating in the actual project can achieve a stable anoxic process.The preliminary pilot test results show that the removal of TN is achieved in the sieve tray bioreactor.At the same time,partial denitrification and anaerobic ammonium oxidation occurred.Compared with the traditional denitrification filter,the reactor has no backwashing process,and there is no filter consumption and subsequent processing of the filter material.In this process,the organic matter dosage is C/N1,and the tail water is treated by the reactor,and the effluent is clear and the operation is stable.?5?The reactor is easy to operate and manage,and it can be managed daily without special technical training.