两相一体式污泥浓缩消化反应器的性能研究

Performance of Two-phase Integrated Sludge Thickening and Digestion Reactor

在中温条件下，对两相一体式污泥浓缩消化反应器（TISTD）处理污泥的性能进行了深入的研究。当投配率为30％、进泥含水率为99．2％-99．8％、VS／TS为0．55～0．61时，排泥的含水率为93．5％～95．5％，VS／TS为0．33～0．40，产气量为18～24．5L／d。经TISTD处理后，污泥的脱氢酶活性大大降低；18．6％～32．6％的总氮进入到上清液中，64．6％～81．0％的总氮在排出的厌氧污泥中；23．5％一28．3％的总磷进入到上清液中，70．7％～75．1％的总磷在排出的厌氧污泥中。

The performance of two-phase integrated sludge thickening and digestion reactor for sludge treatment was investigated at mesophilic temperature. When the feeding rate is 30%, the incoming sludge moisture content is 99.2% to 99.8% and VS/TS is 0.55 to 0.61, the discharged sludge moisture content reaches 93.5% to 95.5%, VS/TS becomes 0.33 to 0. 40 and the gas production rate is 18 to 24.5 L/d. There is a significant reduction in dehydrogenase activity of the treated sludge. 18.6% to 32.6% of total nitrogen goes back to the supernatant, while 64.6% to 81.0% of total nitrogen is discharged with anaerobic sludge. 23.5% to 28.3% of total phosphorus goes back to the supernatant, while 70.7% to 75.1% of total phosphorus is discharged with anaerobic sludge