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| 生物倍增工艺实际生产运行工况优化探讨 | |
| 作者姓名： | 田海宁 周成金 何文杰 |
| 作者单位： | 1. 天津城市建设学院环境与市政工程系,天津,300384 2. 哈尔滨工业大学市政环境工程学院,黑龙江哈尔滨,150090 3. 天津市自来水集团有限公司,天津,300040 |
| 摘 要： | 考察了生物倍增工艺处理城市污水的实际效能。结果表明,0.02～0.05kgCOD/(kgMLSS.d)的低负荷运行工况不利于对有机物的稳定去除,出水CODCr为69.8 mg/L,平均去除率仅为65.9%,若要满足有机物的排放标准要求,污泥负荷至少要维持在0.06kgCOD/(kgMLSS.d)以上;系统对氨氮的去除效果很好,氨氮去除率可达到100%;污泥沉降性能较好,SVI稳定在50～70;过低的进水C/N是同步脱氮除磷的制约因素,建议采用补充碳源和辅助化学除磷的方式来满足氮磷排放标准限值要求。 |
| 关 键 词： | 生物倍增工艺 城市污水 污泥负荷 C/N |
Discussion on operation optimization of bio-doubling process for practical application |
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| Authors: | Tian Haining Zhou Chengjin He Wenjie |
| Affiliation: | 1. Department of Environmental and Municipal Engineering, Tianjin Institute of Urban Construction, Tianjin 300384, China; 2. School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China; 3. Tianfin Waterworks Croup Co. Ltd.,Tianjin 300040, China) |
| Abstract: | The practical efficiency to treat urban sewage was investigated by bio-doubling process. The results showed that the low sludge loading operation of 0.02 to 0.05 kgCOD/（kgMLSS ·d） was not beneficial to the stable removal of organics. The effluent CODcr was 69.8 mg/L with the average removal rate of 65.9% only. Sludge loading should be maintained greater than 0.06 kgCOD/（kgMLSS · d） at least in order to fit the discharge standard requirement. The removal rate of ammonia nitrogen was 100%. Sludge settleability was good and SVI value was kept stably from 50 to 70. However, low C/N ratio of influent formed the major constraint for simultaneous removal of nitrogen and phosphorus. Measures of adding carbon source and auxiliary chemical removal of phosphorus were proposed for improving the removal of nitrogen and phosphorus to fit the discharge standards. |
| Keywords: | bio-doubling process（BDP） urban sewage sludge loading C/N |
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