3000吨每天的造纸废水的工程设计.doc
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- 3000 每天 造纸 废水 工程设计
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1、摘要本设计为3000m3/d的造纸废水的工程设计。根据该造纸废水的水质特点和水量,参考造纸废水处理的经验资料,采用较新的DAF气浮法UASB生物接触氧化工艺,并进行经济、技术及环境效益的对比。DAF气浮法适合用于处理造纸纸浆,悬浮物去除率为90%以上,工艺流程和设备结构比较简单;UASB有机容积负荷高,占地面积小,能耗低,可以回收沼气,剩余污泥量少,污泥脱水容易,运行管理简单;生物接触氧化池具有较高的容积负荷,污泥产量较低,颗粒较大,易于沉淀,无需污泥回流,不存在污泥膨胀问题,也不产生滤池蝇。本工程采用的DAF气浮法UASB生物接触氧化工艺,具有技术成熟、稳定、节能、占地少且效率高等特点,建设
2、投资成本为两百五十多万元,成本合理,平均吨水运行费为0.558元/吨,费用低廉。采用该工艺处理造纸废水后,能使出水水质达到广东省造纸废水污染物排放标准的要求。关键词:造纸废水,DAF气浮法,UASB,接触氧化法AbstractPresent is the design of the treatment project of paper wastewater with the amount of 3000m3/d. Distinguishing feature on the basis of former experience and statistics ,and through the co
3、mparison on the economic,technologic and environmental benefit,chose Pressure Dissolved Air Flotation UASBbiological contact oxidation technology.Pressure Dissolved Air Flotation is suitable for dealing with paper pulp. The removal rate of suspended solids is above 90%. Technics process and equipmen
4、t structures are relatively simple. UASB have a high organic volume load it occupies small area and has low energy consumption. Gas can be recovered Also. UASB produce little residual sludge. The sludge dewatering is easy.The operation and management are simple.Biological contact oxidation has a hig
5、her volume load, low sludge production, large particles and precipitating easily. It doesnt need sludge returning, and there is no sludge bulking problem and does not produce filter flies. Pressure Dissolved Air FlotationUASBbiological contact oxidation technology is ripe, steady, less energy consum
6、ption,taking less area and high efficiency. The investment cost is about 2.5 million yuan,whith is reasonable. The average water running cost is 0.558 yuan / ton, whith is low. the discharged water can meet the emission limits of paper wastewater in Guangdong province.Key words: Paper wastewater Pre
7、ssure Dissolved Air Flotation UASB Contact oxidation method目 录1 项目概述12 设计规模和目标22.1 设计处理废水水量22.2 设计进水水质和出水水质22.3 设计依据22.4 设计原则33 处理工艺的确定43.1 本设计采用的工艺处理方法43.2 工艺概述及选择理由43.2.1 气浮法43.2.2 生物接触氧化法43.2.3 UASB法53.3 工艺流程简图64 主要设备的设计计算与设备选型74.1 格栅74.1.1 设计说明74.1.2 设计计算74.1. 设备选型94.2 调节池104.2.1 设计说明104.2.2 设计计
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