后置沉淀化学除磷工艺的优化控制研究  

Optimal Control of Post-precipitation Chemical Phosphorus Removal Process

作　　者：庞洪涛[1,2] 邱勇[1] 薛晓飞 邵彦青 王佳伟[3] 施汉昌[1] 

机构地区：[1]清华大学环境学院环境模拟与污染控制国家重点联合实验室,北京100084 [2]北控水务<中国>投资有限公司,北京100124 [3]北京城市排水集团有限公司,北京100022

出　　处：《中国给水排水》2013年第13期38-41,共4页China Water & Wastewater

基　　金：国家水体污染控制与治理科技重大专项(2011ZX07316-001);国家高技术研究发展计划(863)项目(2012AA063406)

摘　　要：目前,化学除磷在污水处理厂被广泛采用。通过小试和中试,对后置沉淀化学除磷工艺的优化控制进行研究。首先通过烧杯试验考察了加药量、加药位置和不同药剂对除磷效果的影响,为优化控制设定工艺参数,然后采用中试AAO系统对比了恒量加药和优化控制的除磷效果。中试结果表明,恒量加药的出水磷浓度波动较大,而经优化控制后的出水正磷浓度稳定维持在0.3mg/L以下,并减少药剂用量约18.9%。因此,对后置沉淀化学除磷工艺进行优化控制,能够在保证出水总磷浓度稳定达标的同时减少加药量。At present, the chemical phosphorus removal process is widely used in WWTP. Based on laboratory and pilot-scale tests, the optimal control of post-precipitation chemical phosphorous removal process was studied. In order to set process parameters, factors such as dosage, dosage points and different chemicals were investigated in jar tests. The phosphorus removal efficiencies with constant dosage and optimal control were compared in a pilot scale AAO system. The results showed that ortho-phosphate （OP） concentration in the effluent varied largely by constant dosing. Dynamic control could maintain OP at less than 0. 3 mg,/L and save 18.9% of dosage. Optimal control of the post-precipitation process can satisfy the discharge standard stably and save chemicals cost.

关 键 词：化学除磷 后置沉淀 优化控制 

分 类 号：X703[环境科学与工程—环境工程]