Practice of Technical Renovation Project for Hospital Sewage Treatment Station
Taking a large-scale comprehensive hospital sewage treatment station in Anhui Province as an example,in response to the problems of substandard ammonia nitrogen in its effluent,poor sedimentation effect,and unstable operation of the biological treatment system,the original"biological contact oxidation method"treatment process was technically modified by using"A/O+inclined tube sedimentation"technology and replacing the original suspended packing with composite packing,while fully utilizing the original tank structure to reduce the transformation cost.The operation results show that the effluent quality has significantly improved after the technological transformation,and key indicators such as ammonia nitrogen meet the requirements of pre-treatment and sewage treatment plant pipeline standards.The efficient removal of major pollutants such as COD has also been achieved simultaneously,and the system process is running stably.
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