餐厨垃圾厌氧消化泡沫产生及处理的研究

Study on the Generation and Treatment of Anaerobic Digestion Foam in Kitchen Waste

对餐厨垃圾厌氧消化泡沫产生的影响因素进行了阐述,针对厌氧消化起泡后的沼液和泡沫处理提出了一种有效的应急处理措施,通过实验验证了处理措施的可行性。结果表明,在沼液和泡沫中加入一定量的絮凝剂,当过滤压力为6~6.5kg/cm2时,沼液和泡沫含水率可压缩至67.5%左右,滤液经电解氧化后污染物可得到一定的去除。该方法可以有效避免厌氧消化反应器中的沼液和泡沫溢出,防止产生二次污染。

The influencing factors of anaerobic digestion foam in kitchen waste were expounded, and an effective emergency treatment measures were proposed for the treatment of biogas slurry and foam after anaerobic digestion. The feasibility of the treatment measures was verified by experiments. The results showed that a certain amount of flocculant is added to the biogas slurry and the foam. When the filtration pressure is 6~6.5 kg/cm2, the moisture content of the biogas slurry and the foam can be compressed to about 67.5 %, and the pollutants can be removed after electrolytic oxidation. The method can effectively prevent the biogas slurry and foam overflow in the anaerobic digestion reactor and prevent secondary pollution.