When the waste water flows through the grille, the large suspended substance is removed first, and then enters the water collecting well, and the waste water of the water collecting well is pumped into the air flotation tank to extract protein feed, and the dried protein feed is dried by drying the wet protein feed. Air flotation wastewater flows into the settling tank to regulate water quantity and precipitate to remove some suspended solids. Anaerobic biological treatment using UASB technology, adjust the pump pressure into the sedimentation tank wastewater with UASB anaerobic treatment, the degradation of most organic compounds in the UASB reactor, the methane produced during the reaction with water sealing, three-phase separator, desulfurizer after processing into biogas storage cabinets were used. The UASB water flow into the preaeration sedimentation tank, preAeration Sedimentation Tank anaerobic treatment and aerobic treatment unit are important structures between the units, its main function is to remove the anaerobic effluent suspended solids and H2S and other harmful gases, increase dissolved oxygen in water, and create favorable conditions for aerobic treatment. Aerobic biological treatment adopts SBR technology, and the effluent of preexposure sedimentation tank flows into SBR for aerobic biological treatment, so as to further degrade organic substances in water. Regulation of sludge discharged into the sedimentation tank, UASB, preexposure sedimentation tank, SBR processing unit generates the set of mud mud wells, wells sludge pump to enhance sludge thickening tank, sludge concentration in sludge dewatering by mechanical dewatering of the sludge cake Sinotrans as organic manure. The liquid in the sludge thickener and the filter press between the sludge dewatering are discharged into the water collecting tank for reprocessing.

Because this kind of waste water is very harmful to the environment, it can not be discharged directly, so it must be treated after concentration of each process wastewater, and then can be discharged after reaching the two level of the national standard.

Key words: corn starch wastewater,、SBR、biological treatment

目 录

摘  要 1

Abstract 2

目 录 3

第一章 引言 6

1.1课题名称 6

1.2设计目的 6

1.3设计范围 6

第二章 设计依据和设计原则 7

    2.1设计依据 7

2.2设计原则 7

第三章 设计规模、废水水质参数的确定 8

3.1设计规模 8

3.2废水水质 8

第四章  玉米淀粉废水处理工艺流程的确定 8

4.1各工艺比较 11

4.1.1 A2/O工艺 11

4.1.2 氧化沟 11

4.1.3 A/O工艺 12

4.1.4 SBR工艺 13

4.1.5 UASB工艺 13

4.2 工艺流程的初步拟定 14

4.3 拟定工艺流程说明 15

4.3.1 水解酸化池 15

4.3.2  池 15

4.3.3  池 16

第五章 玉米淀粉废水处理构筑物设计和计算