Design for Wuhan Green sewage treatment plant using SBR activated sludge process

Abstract

The objective of the thesis project was to design a sewage treatment plant using Sequencing Batch Reactor(SBR) activated sludge process based on the requirements of Wuhan green sewage treatment plant. The main contents of the thesis are process comparison and selection,structure selection and plant layout arrangement. SBR process includes five phases,charging,aeration,sedimentation,discharge and standby process.SBR reactors treat the sewage from mechanical biological treatment facilities in batches.Then,oxygen pumped into the mixture of sewage and activated sludge to reduce the organic matter.After sedimentation, separate the mixture of mud and water.Remove the supernatant produced after the aeration precipitation and leave part of the activated sludge from the reactor as seed sludge.The purified water will be discharge to the river or sea if the quality meets the standard published by government