tkn

The removal rate of T-N trends decline with BOD_5 / TKN decreasing .

随BOD5/TKN的降低TN去除率有降低的趋势。

That is because COD / TKN ratio determines the coefficient of influent flow distribution in multi-stage influent with optimal distribution .

这是由于采用优化流量分配的多段进水中，COD/TKN值决定流量分配系数。

The biological treatment processes are dominating for the removal efficiencies of BOD , COD , NH-N and TKN .

在渗出水的处理方面发现，场内对BOD、COD、氨氮与TKN之去除主要是靠生物处理；

The contents of total Kelvin-nitrogen ( TKN ) and TP of harvested algal biomass were ( 5.75 ±) 0.20 % and 1.56 ± 0.22 % .

藻体总凯氏氮（TKN）和TP含量分别为5.75±0.20%和1.5±0.22%。

The results of the investigation were as follows : 1 . The Mlss , Mlvss , cell density , size distribution , zeta potential , toxicity , TKN and protein content of marine denitrobacteria were determined respectively .

通过研究得到如下结论：（1）测定了海水反硝化细菌制剂的MLSS、MLVSS、细胞密度、粒径分布、Zeta电位、生物毒性、TKN和蛋白质含量等理化指标。

Three recycle to influent ratios from 1 to 3 were tested . Average performance of the overall process , in the different conditions tested , were a TOC removal of 81 to 91 % and 85 to 91 % of TKN .

测试了从1到3的3个循环比条件下的出水情况，在不同的测试条件下整个过程的平均表现为：TOC去除81-91%，TKN去除85-91%。

Tests showed that wastewater discharge affected water quality and soil quality , especially on NH_4 ~ + - N concentration of the water , TKN and TP concentration of the soil , in a wastewater treatment wetland ecosystem at Nanhui beach , estuary of Yangtze River .

试验结果表明，排污影响了南汇边滩湿地污水处理系统的水质和土质，尤其是对水体中的NH4+-N含量、土壤中的TKN和TP含量影响最大，对植物生长状况未造成明显影响。

The denitrifying results showed that the biofilm A / O / O system was capable of achieving in 30-50 percent TN removal efficiency and excess of 70 percent TKN removal efficiency to treat such low C / N ration municipal wastewater under the condition of no external carbon source .

研究表明，在无外加碳源的条件下，膜法A／O／O系统对该城市污水的TN去除率为30～50%、TKN去除率为70%以上。