摘 要: 本设计是对生活小区中水回用系统的设计。该小区是淮安市某高级商住小区，地理条件优越，占地2.5万m2 ，经过监测，小区的设计处理水量为1200m3/d。

中水的水源是经过CASS工艺处理过的小区污水。小区的进水水质为COD:100mg/L, SS：10 mg/L，BOD5：20 mg/L，色度：50。本着技术先进成熟、运行可靠、切合实际、降低运行费用、操作管理简单、占地少的原则，通过对该小区的水量水质等特点的分析，结合生活小区污水的处理工艺，对小区环境卫生要求及本工程的具体要求采用絮凝-沉淀-过滤-消毒为核心的处理工艺。本工艺是物化法深度处理，具有费用低、占地少的优点，是一种高效、经济、灵活的污水处理技术。  60018

毕业论文关键词：生活小区，中水回用，CASS工艺

Abstract: The design is with the small area water return to use the system. The small area is high-placed in Huaian City, the condition of geography is ascendant, with the square is 25.000m2, and from monitor, the fluid matter of the design is 1200m3/d.

The source of the middle water is from the dirty water of the small area disposed by CASS  

technique. The quality of the plant influent is CODcr: 100mg/L, SS: 10mg/L, BOD5: 20mg/L, chroma: 50. In the light of the technique forerunner mature, circulate dependable, slice to match actual, lower the movement expenses and operate the management simple, cover the little principle, pass the analysis to measure fluid matter etc. characteristics to the water of that small area, combinative live the small area dirty handles aqueously craft, request to the small area environmental hygiene and this engineering of concrete the request adopt the grounds - precipitate- filter- disinfect handles for the core craft. It has the expenses low, cover the less area. It’s a kind of efficiently, the economy, vivid and dirty water handles physics-chemistry technique.

Keywords: living quarters, water reuse, cass technics  

1  前言 5

1.1  中水处理的现状 5

1.2  中水的利用 6

2  项目介绍 6

2.1  项目概述 6

2.2  设计原则 7

2.3  污水来源 7

2.4  水量、水质资料 8

3.工艺方案的比较和确定 8

3.1  工艺方案的比较 9

3.2  工艺方案的确定 12

4  构筑物的计算 12

4.1  曝气塘的计算 12

4.2  隔离反应池的计算 15

4.3  斜管沉淀池的设计 16

4.4  虹吸滤池的计算 17

4.5  消毒滤池的计算 18

4.6  中水池的计算 19

4.7  重力浓缩池的设计 20

5  平面布置 21

6  高程布置 21

7  工程建设总投资估算 22

7.1  土建部分 22

7.2  设备部分 23

7.3  其他费用