3000m3-d印染废水处理厂设计

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本印染废水处理厂设计规模 3000m 3/d ，设计水质水量为：Q=3000m 3/d ，COD cr =700～1000mg/L ， PH=7.5~10.0，SS=500～800 ㎎/l ，色度400～600 倍。

经处理后，应达到下列出水水质：COD ≤100mg/L ，色度≤40倍，SS ≤50mg/L, 要求处理后水质达到《山东省地方标准 纺织染整工业水污染物排放标准》 ( DB37/ 533－2005) 标准中B 级标准：

COD ≤60mg/l ，SS ≤30mg/l ，色度≤30倍。

印染废水的特征可概括为：有机物浓度高、成分复杂、可生化性较差、色度深、碱性大、PH 高、水质变化大。

本工程方案设计依据有关环境保护在污水中的要求，采用混凝沉淀—水解酸化—接触氧化工艺处理纺织印染废水，在详细方案比较的基础上，选择了如下处理工艺流程：

经设计可知 COD=94.0%, ηSS=96.2%,色度95%。

经技术经济分析，此方案投资总额869万元，废水处理成本为2.8元/ m 3。 关键词： 纺织印染废水 混凝 水解酸化 接触氧化

废水 调节池 格栅 混凝沉淀池

水解酸化池

接触氧化池 二沉池 出水 浓缩池

脱水间 污泥外运

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The designing scale of waste water treatment plant is3000 m 3/d, the

designing quality and quantity of water are: Q=3000m 3/d ，COD=700～

1000mg/L ,PH=7.5～10 ,SS=500～800 ㎎/l ,Color degree=400～600 times. After disposing of it, the quality of water should attain the following standards: COD≤60mg/L ，SS≤30mg/L ，Chroma ≤ 30 times ，reaching the B standard of (DB37/533-2005）of local standards of Shandong Province Textile industrial water pollutant discharge standards.

The design of this project is in accordance with requirements of the

environmental protection in the wastewater. It uses the coagulation- sedimentation -hydrolytic acidification – contact oxidation process to deal with the wastewater in textile printing. Based on comparison of the detailed program, we select the following processes:

Through designing, we can know that the result of COD is 94%,ηSS is 96.2%,color degree is 95%. Printing and dyeing

wastewater R egulating pond Grids Coagulation sedimentation tanks Hydrolytic acidification Contact

oxidation pond Secondary sedimentation tank

Drainage Pool enrichment

Dehydrate

Sludge

Carry out Sludge

After technical and economic analyzing, the investment amount of this project is 8.69million Yuan, and the cost of disposal of waste water is 2.8 Yuan/ t. It not only gains good economic and social benefits, but also fully puts the ideas of saving land economically, improving virescence and reducing energy consuming into the practice while designing, which is in conformity with new era environmental needs.

KEY WORDS: Textile printing and dyeing wastewater; Coagulation sedimentation; Hydrolytic acidification ;Contact oxidation

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目录

目录 (4)

前言 (10)

第一章综述 (11)

1.1印染废水的产生及特点 (11)

1.2印染废水的处理 (13)

1.2.1印染废水处理的通用方法 (13)

1.2.2针织印染废水的产生与处理 (15)

1.3设计依据和原则 (16)

1.3.1设计依据 (16)

1.3.2设计原则 (16)

第二章工艺流程的选择 (17)

2.1悬浮物的去除 (17)

2.2 碱度的去除 (17)

2.3有机物的去除 (17)

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