一种适用于高悬浮物有机废水处理的新型厌氧装置

An Anaerobic Reactor for the treatment of Organic Wastewater Containing High Suspended solids.

本研究的厌氧反应器具有UASB工艺与两相消化装置的特点,将发酸酵、甲烷发酵、沉淀分离3个工艺过程有效地组合成一体,并利用所产生的沼气及水位变化控制进行无需外加动力与设备的自动回流搅拌,以适应于处理高悬浮物的废水,并避免堵塞、短流与浮渣板结等问题。120L反应器在35℃下处理好氧剩余污泥的试验表明,在HRT3.53—8.57d条件下,其有机物去除率达51.4％—58.6％,在HRT为7.5d时,其有机负荷为2.97kgSS/(m^3·d),COD负荷为3.89kgCOD/(m^3·d),平均有机物去除率为55.3％,所产沼气含甲烷60％以上。

The reactor used in this study combined the features of UASB and two-phase digestion reactors. Acidification, methanogenesis digestion and settling clarification are effectively integrated in One reactor. The return mixing by produced biogas and the liquid is achieved and no energy and equipment are needed. The problems of sludge clogging , liquid shortcuting and aggregation of scum have been solved. The exeperiment of treating aerobic excess sludge studied in 120 liter reactor at 35℃ shows that the organic pollutant removal efficiency of 51. 4%-58% is reached corresponding to HRT=3. 53-8. 57 days. When HRT is fixed at 7. 5 days,the organic loading rate,COD loading rate and average organic removal efficiency are 2. 97KgSS/(m3. d), 3. 89 kgCOD/(m3. d) and 55.3%. respectively. The methane content of biogas is more than 66%.