淀粉厂玉米酒精污水处理(2)

辽宁科技大学本科生毕业设计 第 IV 页

6.2.1照明··················································································································· 18 6.2.2防雷防电 ··········································································································· 18

7环境影响及保护 .................................................................................... 19 8劳动安全与卫生 .................................................................................... 20

8.1防溺水与防高空坠落····················································································· 20 8.2消防················································································································· 20 8.3节能················································································································· 20 8.4工业卫生········································································································· 20

9职工定员及附属构筑物 ........................................................................ 21 10投资建设............................................................................................... 22

10.1投资估算······································································································· 22

10.1.2 工程主要设备投资及安装费用 ······································································ 22

10.1.3 工程其它投资估算 ························································································· 23 10.1.4 工程总投资估算 ····························································································· 24

10.2 运行费用计算······························································································ 24

10.2.1 人工费 ············································································································ 24 10.2.2 电费 ················································································································ 24 10.2.3 折旧费 ············································································································ 25 10.2.4 维修费 ············································································································ 25

10.3总估算··········································································································· 25

致 谢 ........................................................................................................ 27 参考文献 .................................................................................................... 28 附录A设计计算书 ................................................................................... 29

IV

辽宁科技大学本科生毕业设计 第 1 页

1 概况

1.1项目背景

我国生物化工行业经过长期发展，已有一定的基础.特别是改革开放以后，生物化工的发展进入了一个崭新的阶段。目前生物化工产品已涉及食品、医药、保健、饲料和有机酸等几个方面。但是，随着生物化工的发展，其环境污染问题也日趋严重，已经成为我国的环境污染大户。在生物化工的各个行业中，由于淀粉、啤酒、酒精、味精、柠檬酸、抗生素的产值较大，环境污染严重，尤其引起人们重视。

食品工业是以粮食和农副产品为主要原料的加工工业。这类行业用水量大，废水排放量也大，尤其以淀粉工业废水的排放量占首位。我国淀粉行业有600多家企业。在国内，每生产1m3淀粉就要产生10～20m3废水，有的甚至更多。废水中主要含有淀粉、糖类、蛋白质、废酸和废碱等污染物，随生产工艺的不同，废水中的 COD浓度在2000～20000mg/l之间。这些淀粉废水若不经过处理直接排放，其水中所含有的有机物，进入水体后迅速消耗水中的溶解氧，造成水体缺氧而影响鱼类和其他水生动物的生存，同时废水中悬浮物易在厌氧条件下分解产生臭气，恶化水质。山东某淀粉厂生产过程中排放大量淀粉废水，影响周围环境，为适应当地环保工作的需要和工业项目应同时设计、同时施工、同时投入使用的三同时原则，也使出水水质达到相应的标准，故投资兴建此配套污水处理设施。

1.2设计依据

根据《建设项目环境保护管理条例》国务院（1998）第253号令和《关于加强工业节水工作的意见》国经贸贸源[2000]1015号及国家环保总局有关政策和规定。本污水处理设计主要执行的标准与技术规范如下：

（1）《污水综合排放标准》（GB 8978——1996）； （2）《工业废水处理工程设计与实例》；