The feces discharged by large scale pig farm were sold and used by themselves as organic fertilizer, and the waste water treated by traditional anaerobic fermentation process.
规模化猪场的粪渣主要作为有机肥外卖或自用处理，而污水主要采用传统厌氧发酵工艺处理。
The technique of fermentation of uncooked starch for producing alcohol was hard to spread in large-scale distilleries because of the excessive use level of saccharifying enzyme.
糖化酶用量过大是淀粉质原料无蒸煮酒精发酵在大厂的实际应用中难于推广的重要原因之一。
Methane, which can be produced on a large scale by fermentation of algae, is a biomass energy source and a carbon-neutral clean energy source.
大型海藻发酵生产甲烷属生物质能，是一种碳中性的清洁能源，是重要的海洋生物碳汇。
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