【摘 要】
：
Coke plant wastewater was treated by an anaerobic-aerobic (A/O) biofilm system. A lab-scale experiment, during which semi-soft media were packed in both the ana
【机 构】
：
Department of Chemistry
论文部分内容阅读
Coke plant wastewater was treated by an anaerobic-aerobic (A/O) biofilm system. A lab-scale experiment, during which semi-soft media were packed in both the anaerobic and the aerobic reactors, was carried out. The influence parameters, such as HRT, C/N ratio, OLR, and the recycling flow rate on the performance of the system, were studied. The results showed that a sufficient carbon source was important to the performance of bio-degradation system. The COD removal rate increased from 64.15% to 83.28% by raising C/N in wastewater from 2.5 (no external carbon source) to 5. But the effluent COD concentration was still a little higher than the discharge standard. In order to make it meet the discharge standard, a deep treatment, coagulation, was applied, which was proved as an effective method. Then the effluent COD concentration can be brought to lower than 200 mg·L-1. The NH4-N removal rate in this system was satisfactory, being higher than 99%. In addition, it was almost not affected by both C/N ratio and coagulation treatment. The results show that the system is feasible to treat coke plant wastewater.
其他文献
By bianalytic functions, the boundary integral formula of the stress function for the elastic problem in a circle plane is developed. But this integral formula
在信息概念的基础上,讨论了信息的多样性问题;对最常见的符号信息从基本理论层次进行了分析,澄清了一些容易混淆的概念;也讨论了信息数字化碰到的问题.
Based on the conc
Vanadium pentoxide xerogel(VXG) films were prepared by rapid quenching, then coin type 2016 size lithium rechargeable batteries were assembled and tested with t
A series of mesoporous nano-TiO2 material doped with Sn are synthesized by a homogenous precipitation method aided by microwave heating, using TiCl4 and SnCl4 a
Based on a stochastic mesoscopic model, the influence of internal noise on the oscillatory kinetics of the catalytic oxidation of CO on nm-sized palladium parti
The volatile and semi-volatile components in tobacco flavor additives were extracted by both simultaneous distillation extraction and solid-phase micro-extracti
110 atmospheric aerosol samples collected from November 1997 to October 1998 at two monitoring sites (Ming Tomb and Temple Heaven) in Beijing were analyzed for
The new orthogonal relationship is generalized for orthotropic elasticity of threedimensions. The thought of how dual vectors are constructed in a new orthogona
The study of constraints on the constitutive relationships of electromagnetic media is of great importance in the aspects of the medium characteristics analysis
Carbon fiber-reinforced SiC composites were prepared by precursor pyrolysis-hot pressing (PP-HP) and precursor impreg- nation-pyrolysis (PIP), respectively. The