1. 内蒙古蒙牛乳业 (集团) 股份有限公司, 内蒙古和林格尔 011500
2. 蒙牛乳业 (马鞍山) 有限公司, 安徽马鞍山 243000
| 摘 要: | 乳制品行业废水中98%属于含乳清洗废水,废水中主要成分为蛋白质、脂肪、干物质等,生化性能较好,乳制品污水处理工艺为水解酸化+厌氧+好养工艺,一般乳品生产企业废水进水COD平均2000-2500mg/l,污水处理工艺中厌氧环节可产生大量沼气。早期乳品污水处理设计多数通过火炬直接燃烧排放,不仅浪费资源,而且存在生态环境和安全生产风险。本文认为可设计一套沼气回收处理系统和沼气锅炉系统,实现资源回收利用,不仅可节约能源,而且减低企业碳排放总量。本文对蒙牛乳业(马鞍山)有限公司污水指标进行分析后,决定先使用沼气回收系统对厌氧环节产生的气体进行收集,再采用沼气脱硫装置对气体中的硫进行脱出,最后进入沼气锅炉燃烧,并输出蒸汽进行利用。上述处理工艺能够有效利用沼气,实现节能降耗。 |
| 关 键 词: | 乳制品废水; 生化处理; 沼气回收利用 |
| DOI: | 10.57237/j.res.2024.02.001 |
1. Inner Mongolia Mengniu Dairy (Group) Co., Ltd., Helingeer 011500, China
2. Mengniu Dairy (Maanshan) Co., Ltd., Maanshan 243000, China
| Abstract: | 98% of the wastewater in the dairy industry belongs to the whey washing wastewater, the main components of the wastewater are protein, fat, dry matter, etc., and the biochemical performance is particularly good. The wastewater treatment process of dairy products is hydrolytic acidification + anaerobic + good nutrition process. In general dairy production enterprises, the average COD of wastewater inlet is 2000-2500mg/l, and the anaerobic part of the wastewater treatment process can produce a large amount of biogas. In the early design of wastewater treatment of dairy products, most of them were discharged by direct combustion of the torch, which not only wastes resources, but also has ecological environment and safety production risks. This paper considers that a set of biogas recovery and treatment system and biogas boiler system can be designed to realize resource recovery and utilization, which can not only save energy, but also reduce the total carbon emission of enterprises. After analyzing the sewage index of Mengniu Dairy (Maanshan) Co., LTD., this paper decided to first collect the gas generated in the anaerobic stage by using biogas recovery system, then use biogas desulfurization device to remove the sulfur in the gas, and finally enter the biogas boiler for combustion and output steam for utilization. The above treatment process can effectively utilize biogas and achieve energy saving and consumption reduction. |
| Keywords: | Dairy Wastewater; Biochemical Treatment; Biogas Recycling |
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