毕业论文：《屠宰废水处理进行初步设计》.docVIP

l 摘 要 本次设计的目的是对屠宰废水处理进行初步设计，针对其废水量较大，且水质、水量在一天内的变化比较大，有机污染物含量高等特点，分析与本工程相关的资料，经过多种处理方案的比较，最终选定水解—接触氧化为主体的处理工艺。 本流程首先设有格栅、隔油池、调节池，对污水进行预处理，去除水中的悬浮颗粒、泥沙和油污, 并使处理的水质均匀, 水量稳定。水解作为整个废水处理流程的前处理单元, 目的在于使屠宰废水中复杂大分子有机物被降解成小分子溶解性有机物和有机酸，为后续好氧反应器提供优质的底物。在接触氧化池中主要存在好氧微生物及自氧型细菌(硝化菌)，好氧微生物可将有机物分解成CO2和H2O，大幅度降解废水中的BOD5、CODCr、SS等污染负荷。 经过本工艺处理的出水水质能达到《肉类加工业水污染排放标准》一级标准。通过初步预算，该工艺也将带来比较可观的经济效益和良好的环境效益。 本设计对隔油池、调节池、污泥池、二沉池等主要构筑物进行计算，编制设计说明书，并绘制工艺流程、构筑物平面及高程、主要构筑物共五张图纸。 关键词： 屠宰废水；有机污染物；水解酸化；生物接触氧化 Abstract The purpose of this paper is to design a treatment process for dealing with slaughtering wastewater.In view of its wastewater quantity is bigger, and water quality and quantity of within a day change is bigger, organic pollutant content is high, analysing the related material about engineering ,eventually I selected the combined technological process consisting of hydrolysis and contact oxidation after many kinds of processing scheme comparison. The pre-treatment process is composed by grille,regulating pond and the grease separation, its purpose is to remove larger suspended particulate matter and the oil substances. Hydrolysis is a treatment unit that degrade Complex organic molecules into small molecule soluble organic matter and organic acid and provide quality gelatins for subsequent aerobic reactors.There exists mainly aerobic microorganisms and autotroph in biological contact oxidation pool organic matter be decomposed into CO2 and H2O by Aerobic microbes. The quality of output water can meet the design requirements if use the process to treat slaughtering wastewater.Through the initial budget, this process will bring considerable economic benefit and good environmental benefits. This design calculate main structures such as the oil pool, regulation ponds and sludge pond, the second pond,compile the design specification and draw five blueprint that include process flow ,construction plan, elevation plan and the main Structures Key words: Slaughtering was