摘要
为研究生物接触氧化技术处理河道污水的能力,实验室采用砾石和火山岩填料作为微生物载体,并利用稀释后的生活污水模拟河道污水。通过调控反应器的运行方式和运行条件来降低出水COD和TN的质量浓度,实现同时去除有机物和TN的目的。结果表明,在温度为12.8～24℃和DO质量浓度为2.9～6.3 mg.L-1的条件下,当进水COD为80～150 mg.L-1、TN质量浓度为25～55 mg.L-1、水力负荷为5～7 m3.m-3.d-1的条件下,采用分段进水前后的COD平均去除率均维持在75%,出水COD均小于50 mg.L-1,TN的平均去除率由分段进水前的40%提高到70%,且TN质量浓度降低至15 mg.L-1,均达到污水综合排放标准(GB 8798-1996)中的一级A标准,说明接触氧化工艺能同时有效的去除COD为代表的有机物和TN。
In order to study the ability of bio-contact oxidization process, diluted domestic wastewater was taken as the influent to simulate urban rivers and using gravel and lava as the carrier of microorganism to design the reactors. The reactor operation mode and operating conditions was regulated to remove the organic matter COD and TN at the same time. The results showed that when the temperature was12.8-24 ℃, DO was 2.9-6.3 mg·L^-1 , the average influent COD was 80-150 mg·L^-1 , the average influent TN was 25 -55 mg .L~ and the hydraulic load was 5 -7 m^3 ·m^3 .d^-1, the average removal rates of COD was stable at 75% and the effluent COD are less than 50 mg·L^-1 , and the average removal rates of TN was increased from 40% to 70% after step-feeding, and average effluent TN were less than 15 mg·L^-1 , which can achieve the first class of Integrated Waste water Discharge standard（GB8978- 1996）. It showed that the contact oxidation process can efficiently remove the organic matter and TN at the same time.
出处
《水处理技术》
CAS
CSCD
北大核心
2012年第1期51-54,共4页
Technology of Water Treatment
基金
国家科技重大专项水专项资助课题(2008ZX07208-003
2008ZX07420-004-BJUT001
2008ZX07208-005-003
2009 ZX07424-001)
城市水资源与水环境国家重点实验室开放基金(QAK201005)
国家自然科学基金(50878003)
北京市自然科学基金(8092006)
