Operation And Management Of The Micro Aeration Oxidation Ditch Sewage Treatment Plant For Low Concentration Influent

Due to the limited financial resources in Guangdong province north, The sewage pipenetwork construction lag, cause low concentration of the water. The area mostly adoptsmicroporous aeration oxidation ditch sewage plant process, In the condition of low waterconcentration, Nutritional imbalance, As a result of many micro light oxidation ditchoperation and management problems.Such as activated sludge not long, Activated sludge ispoor,Degradation of low efficiency, Sludge settleability is poor. In view of the networkconstruction will take time,so, On the low water concentrations, Ensure microporous aerationoxidation ditch normal operation and maintenance management is very urgent.This research will be based on the literature research，Reference to general activatedsludge process under low water concentration process of the sewage plant solution, Exploringmicroporous aeration oxidation ditch operation and management under the low concentrationof water solution. Clearance of aeration or Reduce the blower on the Numbers, Increasedconcentration of activated sludge, Add nutrients, Maintain active sludge concentration andactivity. The research contents of microporous aeration oxidation ditch operation management,Establish a microporous aeration oxidation ditch under low concentration of watermanagement pattern. Combining with the characteristics of Microporous aeration oxidation ditchtechnology, The running cost control method,Operating costs low.Through the project of a wastewater treatment plant in heyuan city, Confirm the actualeffect of the solutions and operation management mode of application effect. The sewagefactory adopts microporous aeration oxidation ditch process, design flow for25000m3/d,COD134mg/L,BOD585mg/L,SS104mg/L,NH3-N19.11mg/L,TN23.86mg/L,TP4.15mg/L,PH7.5,waterquality,COD19mg/L,BOD8mg/L,SS9mg/L,NH3-N4.62mg/L,TN9.09mg/L,TP0.95mg/L,PH7.1, After taking measures to improve active sludge concentration the average waterquality, COD30mg/L， BOD57mg/L， SS11mg/L， NH3-N4.86mg/L， TN9.36mg/L，TP0.85mg/L，pH7.05；In addition to the TP， Can achieve《Urban sewage treatment plantpollutant discharge standard》（GB18918-2002）level1,B standard and Local standards inguangdong provinc《eWater pollutant discharge limits（》DB44/26-2001）The second time level1standard,Relatively heavily indicators. The sewage plant stable operation, good management effect, unit processing costs0.43yuan/m3sewage, Operating costs low.The operation and management mode to a certain extent solved the microporousaeration oxidation ditch under low water concentrations of operation and managementissues,for things north region of guangdong province sewage plant to provide reference andbasis, is of great practical significance.