Factors Influencing Nitrogen Removal in a Decentralized Sewage Treatment Reactor

被引：0
|
作者：
Shen, Dong-Sheng [1 ,2 ]
Huang, Bao-Cheng [1 ,2 ]
Liu, Pei-Qing [3 ]
Han, Jian-Xun [4 ]
Feng, Hua-Jun [1 ,2 ]
机构：
[1] Zhejiang Gongshang Univ, Coll Environm Sci & Engn, Hangzhou 310018, Zhejiang, Peoples R China
[2] Zhejiang Gongshang Univ, Zhejiang Prov Key Lab Solid Waste Treatment & Rec, Hangzhou 310018, Zhejiang, Peoples R China
[3] China SINOMACH Heavy Ind Corp, Beijing 100102, Peoples R China
[4] Juhua Grp Corp, Zhejiang 324004, Quzhou, Peoples R China
来源：
JOURNAL OF CHEMISTRY | 2013年 / 2013卷
关键词：
NUTRIENT REMOVAL; SLUDGE; TECHNOLOGY; EFFICIENCY;
D O I：
10.1155/2013/296312
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A decentralized sewage treatment reactor was designed to treat wastewater in rural areas. To examine the factors influencing nitrogen removal, experiments were carried out at three levels of hydraulic surface load, three sludge concentrations, and three environment temperatures at low dissolved oxygen concentrations. The rate of denitrification decreased, and the rate of nitrification increased as the surface load rose. The maximum, denitrification rate was 20.01 +/- 3.02 g/(m(3).d) at a surface load of 1.11 +/- 0.13 m(3)/(m(2).h). The total nitrogen (TN) removal, efficiency initially increased and then decreased as the sludge concentration rose. When the sludge concentration increased to 3.5 +/- 0.3 g/L, the system showed a good level of TN removal and a denitrification rate of 28.58 +/- 1.22 g/(m(3).d) was achieved. Low temperature had a negative effect on the removal and transformation of nitrogenous pollutants.
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页数：6
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