设计总说明:本设计是处理量为5000m3/d的生物制药废水工艺设计,其废水主要是来自某制药厂的制药污水,其制药废水的有机物浓度较高,成分复杂,含有石油类、胺类、酸类、破乳剂等污染物。其中,污水水质CODcr:11000mg/L、BOD5:4000mg/L、pH:6.5-8、SS:2000mg/L。21948
经过对各生物方法处理工艺的研究比较,确定采用厌氧一好氧联合处理工艺工艺,用以处理废水的目的,并且到达规定处理后达到《制药工业污染物排放标准 混装制剂类》(GB18918-2002)一级标准的B标准。
本设计拥有技术上可行、经济上合理的效果。由于A/O工艺拥有以下特点:(a)流程简单,无需外加碳源与后曝气池,以原污水为碳源。(b)反硝化在前,硝化在后,设中循环,以原污水中的有机底物作为碳源,效果好,反硝化反应充分。UASB工艺拥有以下特点:(a)污泥床中生物量多,折合浓度计算可以达到20~30g/L。(b)容积的负荷率高,在中温发酵条件下,一般可以达到10kgCOD/d上下,甚至能高达15~40kgCOD/d,废水在反应器中的水力停留时间短,因此,所需池容大大缩小。整个工艺流程拥有总投资少,运行稳定、二次污染少、处理效果好、能耗少等优点,并确保废水处理达标排放。
设计中,利用UASB与A/O组合工艺的处理可以达到去除该废水中有机物的目的。本生物制药废水处理设计流程为:废水经过格栅去除浮渣,出水收集到集水井,通过调节池的出水经泵提升进入竖流式沉淀池,在UASB反应器进行厌氧处理,再经A/O反应池,在A/O反应池中进行好氧处理。
通过确定的工艺流程,本设计完成对构筑物(包括格栅、竖流沉淀池、UASB反应器、A/O反应池、二沉池、污泥浓缩池等)主要尺寸的设计计算、水力损失及管路计算,完成了设计工艺说明、工艺流程图(含高层布置)、厂区平面布置图和主体构筑物单体图。
本设计以节约动力消耗,降低废水处理费用,方便操作管理为主。本工程投资费用277.7万元,污水处理费用0.53元/ 。
废水经处理后,经该工艺处理后的出水水质为CODcr:100 mg/L,BOD5 :20 mg/L,SS:70 mg/L,pH :6-9,达到国家《制药工业污染物排放标准 混装制剂类》(GB21908-2008)生物制药废水排放的二级标准,以此使受污染的水质得到极大的改进,达到降低污染、保护环境的目的。
毕业论文关键词: UASB+A/O工艺;生物制药污水;好氧厌氧联合处理
A design of pharmaceutical wastewater treatment
General Information of Design:The amount of pharmaceutical wastewater is 5000 m3 / d.The sewage is manly from pharmaceutical plant,,including: high organic concentration of pharmaceutical wastewater, complex composition, containing petroleum, amines , acids, demulsifiers and other pollutants. The indicator of waste water quality standard is: CODcr: 11000mg / L, BOD5: 4000mg / L, pH :6.5-8, SS: 2000mg / L.
By comparing the research of several biology treating processes, the design uses the Anaerobic - aerobic treatment process to remove the nitrogen and TP,and the water which are treated should meet the standards of urban sewage treatment plant emission standards(GB18918-2002), emission standards at the B level.
The design is technically feasible and economically reasonable results. Since the A / O process has the following characteristics: (A) the process is simple, do not need external carbon source and the aeration tank, with raw sewage as carbon source. (B) the former denitrification, nitrification in the post, located inside the loop to raw sewage in organic substrates as a carbon source, the effect is good, denitrification sufficient.
In this design, the use of UASB and A / O combined process can achieve the purpose of removing organic matter . The bio-pharmaceutical wastewater treatment design process: wastewater through the grille to remove the scum, the water collected in the sump, effluent by adjusting the tank through the pump ascend into vertical flow sedimentation tank, in the UASB reactor for anaerobic treatment, and then by A/ O reaction cell, the A / O reactor pool aerobic treatment. 每天5000立米生物制药废水的处理工艺设计+CAD图纸:http://www.youerw.com/huaxue/lunwen_14381.html