甘蔗糖厂废醪液的综合治理

甘蔗制糖废醪液的排放严重污染环境。比较目前采用的几种治理方案，提出一种以多级闪蒸技术为中心的综合治理方案。与目前常用的垂直列管强制循环式多效蒸发方案相比，可提高造水比，减缓结垢。用新方案处理日榨１５００吨甘蔗糖厂的酒精废醪液，工程总投资约６２３１万元，日产有机混合肥１２０吨，年净利３３３７万元。可实现废醪液、滤泥、炉灰的零排放。

Complex Treatment of Organic Discharge Liquor Discharged from Sugar Mill

Organic discharge liquor discharged from sugar mill leads to serious pollution of environment.This paper reviewed several treatment schemes used nowadays for such pollution, and presented a new scheme which multi-stage flash evaporation technology used.Compared with multi-effect evaporation treatment scheme used today,the new scheme increased the ratio of evaporation gain / steam and alleviated dirt forming in the process.For a sugar mill that processes 1 500 tons sugarcane every day,the total investment of the new scheme is about RMB 6 231 million yuan, 120 tons of mixed organic fertilizer can be produced per day,and net profit of RMB 3 337 million yuan can be obtained per year.The new scheme can achieve nondischarge of organic waste liquor, filter sludge and stove ash.