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为研究酸化处理对猪场原水以及沼液存储过程中温室气体的影响,利用浓硫酸对猪场污水进行处理,利用动态箱法对75d内各类气体的实际排放量进行合理检测。根据CH4以及N2O在温室效应中的综合影响,猪场的原水在经过酸化处理后,CO2-eq的含量维持在90%~91%,沼液酸化后温室气体的增加是原来5~10倍。本次研究发现:酸化处理原水可以对温室气体进行有效的抑制,酸化处理沼液导致温室气体排放增加,但对于NH3排放可以有效抑制,同时对于沼液的氮含量可以适当保存。
In order to study the effect of acidification on the greenhouse gas in the storage of raw water and biogas slurry in pig farms, the sewage of pig farms was treated with concentrated sulfuric acid, and the actual discharge of all kinds of gases within 75d was detected by dynamic box method. According to the combined effects of CH4 and N2O in the greenhouse effect, the CO2-eq content of the raw water of pig farms is maintained at 90% -91% after acidification, and the increase of greenhouse gas after the acidification of biogas slurry is 5 to 10 times of the original. The study found: acidification of raw water can effectively inhibit greenhouse gases, acidification of biogas slurry led to increased greenhouse gas emissions, but for NH3 emissions can be effectively inhibited, while the nitrogen content of biogas slurry can be properly preserved.