改进的二相厌氧消化系统的特性研究

Study on the Operation Characters of a Modifed Two Phase Anaerobic Digestion System.

研究填充床酸化反应器及其与ＵＡＳＢ甲烷化反应器组成的二相厌氧消化系统的运行特性．填充床酸化反应器启动方便，酸化速率高、抗水力冲击和ｐＨ波动的能力强、ＣＯＤ容积负荷达２００ｋｇ／（ｍ３ｄ）．采用预调碱工艺，二相消化系统运行正常，可高效地处理酿酒废水．在进料ＣＯＤ浓度１０００—７０００ｍｇ／Ｌ、ＣＯＤ负荷４０ｋｇ／（ｍ３ｄ）时，出料ＣＯＤ浓度小于２００ｍｇ／Ｌ．

In this work the operation characters of the two phase anaerobic digestion system incorporated by a packed bed acidification reactor and an UASB methanorization reactor were studied.The packed bed acidification reactor started up easily and possesed of a high acidification rate and a good resistence against hydraulic impulsion and pH fluctuation.The COD volume charge was higher than 200 kg/(m 3·d). Adopting a preadjusting alkality technology,the two phase system could operate normally and effectively for treating brewing wastewater.Under the conditions of COD concentration 1000—7000 mg/L in the feed and COD charge 40 kg/(m 3·d), the COD concentration was less than 200 mg/L in the effluent. The system possesed also a rather good capacity for treating antibiotics wastewater.