污水处理毕业设计

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1、武汉工程大学本科毕业设计论文 I 摘 要 锰是环境水质污染物的重要重金属监测指标之一，由于我国锰矿床多为中小型矿床，制约了锰矿山建设的规模，现有锰矿山生产能力普遍较小。全国年消耗1000 万 吨 以上，居世界首位，但我国锰矿资源相对缺乏，富矿较少，在大量锰矿的开采和深加工过程中由于设备和处理技术等各方面的制约，使我国的含锰废料和含锰废水污染较为严重。 本设计含锰废水污水处理站日处理量为 1200m3/d，进水的 CODCr 为 200mg/L， pH 为 9.5， SS 为 150mg/L，出水 CODCr 为 100mg/L，pH 为 6-9， SS 为 70mg/L。 本设计采用石灰乳沉淀

2、锰离子，先将石灰乳和废水混合 使废水的 pH 到达 9.5以上 ， 2Mn 在水中溶解氧的作用下迅速氧化为 2MnO 析出 ，加入絮凝剂，通过初沉池、二沉池 絮凝 沉淀 2MnO ，锰离子的去除率为 94.3%。 该工艺处理过的出水可以达到污水综合排放标准 GB8978-1996的一级标准。 武汉工程大学本科毕业设计论文 II Abtract Manganese is one of the important indicators of heavy metal monitoring pollutants in water environment, because our country man

3、ganese deposit more for small and medium-sized deposits, restricted the construction scale of the manganese ore mountain, mountain existing manganese ore production capacity is generally small. National consumption of 10 million t, the highest in the world, but the relative lack of manganese ore res

4、ources in our country, the rich or less, due to in the process of large amounts of manganese ore mining and processing equipment and processing technology and so on various aspects, make our countrys waste and manganese content in manganese wastewater pollution is more serious. The author elaborates

5、 the manganese wastewater pollution control, and analysis has been made in research on governance, so as to provide reference for related research. This design contains manganese wastewater sewage treatment station, capacity is 3600m3/d, CODCr is 200 mg/L water, pH 9.5, SS is 150 mg/L, effluent CODC

6、r is 100 mg/L, pH for 6 9,SS is 70 mg/L. This design USES lime precipitation manganeseion, mix lime milk and the waste water first, join flocculating agent, through the heavy precipitation pool, pond, at the beginning of the manganese ion removal rate was 94.3%. The processes treated effluent can meet the integrated wastewater discharge standard GB8978-1996 level standard.