残留兽药添加剂磺胺喹噁啉钠和3,5-二硝基苯甲酰胺对畜禽粪便中温厌氧消化的影响

摘要

In order to investigate the effect of feed additives sodium sulfaquinoxaline and 3,5-dinitrobenza-mide on mesophilic anaerobic digestion of animal manure, the production of volatile fatty acids(VFAs), cumulative gas and cumulative methane at different concentrations of sodium sulfaquinoxaline and 3,5-dinitrobenzamide was studied under mesophilic anaerobic condition (35 ℃) using simulated manure as object. The results of the test showed that, acetate and n-butyrate were the main VFAs, and the availability of VFAs for methanogen were in an order of acetate > n-butyrate > propionate. The said two kinds of veterinary drug additives both inhibted VFAs generation, but the inhibition effect was not affected by the increasing drugs concentration. Methane pro-duction was not inhibited by the two kinds of drug additives; on the contrary, it was promoted in certain degree. The wastewater containing residual sodium sulfaquinoxaline and 3,5-dinitrobenzamide and manure of livestock could be treated by anaerobic digestion.%为研究饲料添加剂磺胺喹噁啉钠和3,5-二硝基苯甲酰胺对畜禽粪便中温厌氧消化的影响,以模拟畜禽粪便为对象,在中温(35℃)厌氧发酵条件下,考察了磺胺喹噁啉钠和3,5-二硝基苯甲酰胺的添加量对VFAs的生成、累积产气量和累积甲烷产量的影响。试验结果表明：在厌氧发酵过程中,产生的VFAs以乙酸和正丁酸为主,产甲烷菌对VFAs的利用顺序为乙酸>正丁酸>丙酸。2种兽药添加剂均抑制VFAs的生成,但添加剂浓度的增加对抑制效果影响不明显。2种兽药添加剂对产甲烷均没有抑制作用,反而具有一定的促进作用。含有残留磺胺喹噁啉钠和3,5-二硝基苯甲酰胺的养殖废水和畜禽粪便可以进行厌氧消化处理。