Three-Dimensional Fluorescence Characteristics of HA-A/A-MCO Sludge Reduction Process

Abstract

In order to explore methods of improving the removal of phosphorous and nitrogen in sludge reduction technologies, an advanced process combining sludge reduction and the removal of phosphorous and nitrogen was developed, for short, HA-A/A-MCO process (hydrolysis-acidogenosis-anaerobic/anoxic-multistep continuous oxic tank). Under the condition of this process achieving favorable effect of phosphorous and nitrogen removal and sludge reduction. The test results of the process treating campus wastewater showed that when influent COD was 316-407 mg/L, effluent COD was lower than 18 mg/L and COD removal rate exceeded 96 %. Through investigating three-dimensional excitation emission matrix fluorescence characteristics of each tank, the results indicated that each tank of HA-A/A-MCO system was provided with significant degradation to the dissolved organic matter in original sewage.