CAJ | 학술논문

针对污泥减量技术中对氮、磷去除能力低的问题,开发了一种具有强化脱氮除磷功能、污泥减量化的HA-A/A-MCO工艺,其通过回流释磷污泥的水解酸化来刺激磷的厌氧释放并辅以外排富磷污水进行化学固定的方式除磷.研究发现:当进入水解酸化池的厌氧释磷污泥量为进水量的2%时,水解产生的VFA导致释磷量达57 mg/L,聚磷菌的生长得到促进而聚糖菌则受到抑制;当控制侧流除磷液量为进水量的13%、化学除磷池出水磷为5 mg/L时,系统处理出水TP<0.5 mg/L;提高厌氧释磷浓度并控制化学除磷池的出水磷浓度为5 mg/L,可以提高化学药剂利用率、减少药剂用量并提高化学污泥的含磷量,HA-A/A-MCO系统产生的化学污泥含磷率高达18%,接近纯含磷化合物的含磷率,可直接用作生产磷肥的原料.
침대오니감량기술중대담、린거제능력저적문제,개발료일충구유강화탈담제린공능、오니감양화적HA-A/A-MCO공예,기통과회류석린오니적수해산화래자격린적염양석방병보이외배부린오수진행화학고정적방식제린.연구발현:당진입수해산화지적염양석린오니량위진수량적2%시,수해산생적VFA도치석린량체57 mg/L,취린균적생장득도촉진이취당균칙수도억제;당공제측류제린액량위진수량적13%、화학제린지출수린위5 mg/L시,계통처리출수TP<0.5 mg/L;제고염양석린농도병공제화학제린지적출수린농도위5 mg/L,가이제고화학약제이용솔、감소약제용량병제고화학오니적함린량,HA-A/A-MCO계통산생적화학오니함린솔고체18%,접근순함린화합물적함린솔,가직접용작생산린비적원료.
In order to improve phosphorous and nitrogen removal in sludge reduction technologies, an advanced process combining excess sludge reduction and phosphorous and nitrogen removal was devel-oped. It is the hydrolysis acidification-anaerobic/anoxic-muhistep continuous oxic (HA-A/A-MCO) process. It realizes phosphorous removal through the hydrolysis acidification of returned P-release sludge, which improves anaerobic P-release level, and through discharging phosphorus-rich sewage. The results show that when the amount of anaerobic P-release sludge entering the hydrolysis acidification tank is about 2% of the total influent flow, VFA from hydrolysis acidification process is able to induce phosphorus con-tent reaching 57 mg/L from anaerobic release. Meanwhile, the growth of phosphate-accumulating organ-isms (PAOs) in the system is improved greatly while that of glycogen-accumulating organisms (GAOs) is inhibited. When the amount of side-stream phosphorus removal sewage is 13% of the total influent flow, and the effluent phosphorus content of the chemical phosphorus removal tank is 5 mg/L, the effluent TP of the system is less than 0.5 mg/L. Moreover, increasing the phosphorus content from anaerobic release and controlling the effluent phosphorus content of the chemical phosphorus removal tank to 5 mg/L can improve the efficiency of chemicals, reduce the amount of chemicals required and increase the phosphor-us content in chemical sludge. The phosphorus content in chemical sludge in the HA-A/A-MCO system reaches up to 18%, which is equivalent to the content in the phosphorus compound. The phosphorus can be recycled as raw material for production of phosphorus fertilizer.