The Application Of A-tf-baf In Urban Sewage Treatment Plant

The background of this topic is a 30000m3/d sewage treatment plant in Longkeng of Zunyi city. The thesis studies the characteristic of the anaerobic hydrolysis tank—Ttrickling Filter—Biological Aerated Filter sewage treatment process for city living sewage treatment.This project is a pilot project of the Construction Ministry (named Wastewater Treatment Plant in Guizhou). The sewage treatment plant uses acidification—trickling biofilter process to deal with the city sewage, which takes the local geographic environment, economic conditions specific conditions and so on, into account.The thesis studies the characteristic of the anaerobic hydrolysis tank—Ttrickling Filter—Biological Aerated Filter sewage treatment process for city living sewage treatment from these five aspects:(1)The treatment results of the anaerobic hydrolysis tank,show that: the biodegradability of organic compounds have been greatly improved after anaerobic hydrolysis, so that the structure of follow-up treatment effect is more stable. Using anaerobic hydrolysis tank instead of the primary sedimentation tank of traditional municipal wastewater process is more advantageous, while the result of operation would give some evidence for the design of the future urban sewage treatment plants(2) The treatment effect of trickling bio-filter shows that: trickling bio-filter is better to control the water quality and load capacity change, and the effluent quality is more stable.(3) The sewage treatment process based A—TF is good at resisting the quality and the load capacity shock.(4) The project investment and operation costs of the process of this thesis choose are lower than traditional Urban sewage treatment process.(5) The reuse water can be used as the city miscellaneous water (such as greening, car washing, etc.).This research shows that: the acidification - trickling bio-filter process for municipal wastewater treatment has more advantages than conventional sewage treatment technology. The biodegradation of organic of anaerobic hydrolysis tank's effluent is improved. The operating characteristics would provide some reference for the future design of municipal wastewater treatment plant. The low investment, low running costs, stable treatment effect is better than the traditional domestic wastewater treatment. The treated water quality after BAF treatment, which is used as the reuse water treatment process, is better, and meets the standard of live miscellaneous and landscape water. This process has efficient, short process advantages and so on, which is an ideal reuse process of sewage treatment.