这次毕业设计的题目广州市某城镇污水处理工程初步设计,采用倒置A2O工艺。设计主要任务是依据该市污水的性质、规模的要求来对污水处理厂进行初步设计。
污水处理厂初步设计要求完成设计说明书一份、污水处理厂总平面图一张及污水处理厂污水与污泥高程图一张,筑物图一张;单项处理构筑物设计中,主要是完成主体处理构筑物的选型以及平面图的绘制。
本次设计的污水处理厂处规模为60000m3/d。
这次设计的污水处理的构筑物计算主要有:格栅、沉砂池、倒置 A2O反应池、二沉池、接触消毒池、污泥浓缩池的设计计算的设计计算,其中倒置A2O反应池包括缺氧池、厌氧池、好氧池的设计计算。最后进行污水处理厂平面以及高程的设计。污水处理厂处理后的出水要求达到国家污水综合排放标准中的二级标准。
关键词:生活污水;倒置A2O工艺;脱氮除磷
Preliminary design of a municipal sewage treatment project in Guangzhou, using inverted A _ 2O process. The main task of the design is to design the sewage treatment plant according to the quality and scale of the sewage treatment plant.
The preliminary design of the sewage treatment plant requires a copy of the design specification, a total plan of the sewage treatment plant and a sewage and sludge elevation map of the sewage treatment plant, and a building plan; In the design of single treatment structure, it mainly completes the selection of the main treatment structure and the drawing of the plan.
The size of the sewage treatment plant designed this time is 60000m3 / d.
The calculation of the sewage treatment structures designed this time mainly includes: grille, sand settling tank, inverted A2O reactor, secondary settling tank, contact sterilizing tank, sludge thickening tank. The inverted A2O reactor includes anoxic tank and anaerobic tank. Design and calculation of aerobic tank. At last, the plane and height of the sewage treatment plant are designed. The effluent of the wastewater treatment plant is up to the second class standard of the national wastewater comprehensive discharge standard.
Keywords: domestic sewage; inverted A2O process; nitrogen and phosphorus removal
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