Municipal Sewage Treatment Plant Upgrading Of Technology

Many wastewater treatment plants which is built many years ago were adopted theadvanced design theories at that time. But with the development of the urban rapid，many wastewater treatment plants can not meet the new national discharging standard.So，many of them would be upgraded and renovated．The requirement of the treatedwater increased as the country is paying more and more attention to environmentalproblems. In China， the standards of many wastewater treatment plants increased form1B to1A based on the"Municipal Wastewater Treatment Plant Pollutant EmissionStandards"(GB18918-2002). Thus require CODcr， BOD5， TN， TP， NH3-N sethigher standards， not only from the selection process， but also from the stableoperation of wastewater treatment plant. In the other hand， most of the wastewatertreatment plants can not meet the requirement. So the upgrading of them is one of themost important things. The writer analized the operation of JIANXI wastewatertreatment plants and reformed it to increase the quality of the water.In order to makesure that the quality of the water treated by it could meet the standard of1A.This paper concerns about the upgrading of JIANXI wastewater treatment plants，the emphases of which is on the comparison and determination of the treatmentprocess．Through the adjusting of the process， the writer dicide to use improved A2/Onitrogen phosphorus removal process to upgrade the quality of the water from JIANXIwastewater treatment plants. At the same time writer use clarifier with high efficiency，Chlorine disinfection（now）to upgrade the depth treatment. The way of upgrading thetreatment palnts which improved water quality under the lack of the space is themainstream way.