CAJ | 학술논문

对太湖流域三个城市的6座城镇污水处理厂的污水水温变化及运行效果进行了分析,探索了温度对污水厂生物处理效果的影响规律.结果表明:江苏省太湖流域污水处理厂污水水温变化范围是9.6～31℃,年平均值为(20.3±6.0)℃;污水水温<12℃的年概率约为9%;气温变化速率约为水温变化速率的1.7倍.污水水温对COD和TP的去除效果影响不明显;但污水水温降至15 ℃左右时,低温对活性污泥硝化反硝化性能的抑制作用开始逐渐增强,因此太湖流域大多数城镇污水处理厂采取了应对低温的各项强化措施.
대태호류역삼개성시적6좌성진오수처리엄적오수수온변화급운행효과진행료분석,탐색료온도대오수엄생물처리효과적영향규률.결과표명:강소성태호류역오수처리엄오수수온변화범위시9.6～31℃,년평균치위(20.3±6.0)℃;오수수온<12℃적년개솔약위9%;기온변화속솔약위수온변화속솔적1.7배.오수수온대COD화TP적거제효과영향불명현;단오수수온강지15 ℃좌우시,저온대활성오니초화반초화성능적억제작용개시축점증강,인차태호류역대다수성진오수처리엄채취료응대저온적각항강화조시.
The wastewater temperature variation and operation efficiency of six municipal wastewater treatment plants located in three cities in Taihu Basin were analyzed, and the influence of wastewater temperature on pollutants removal was investigated. The results show that the wastewater temperature ranges from 9. 6 to 31 ℃ and averages at (20.3 ±6.0)℃ yearly. The annual probability of wastewater temperature of lower than 12 ℃ is about 9%. The change rate of atmospheric temperature is 1. 7 times greater than that of wastewater temperature. The adverse influence of wastewater temperature on COD and TP removal is not distinct. In contrast, the adverse influence of wastewater temperature is remarkable with regard to the biological nitrogen removal and the capabilities of nitrification and denitrifica-tion once the wastewater temperature decreases to near or below 15 ℃, in which case most municipal wastewater treatment plants adopt effective methods against the negative effect resulted from lower wastewater temperature.