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Factors influencing nitrogen removal in a decentralized sewage treatment reactor
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نویسنده
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shen d.-s. ,huang b.-c. ,liu p.-q. ,han j.-x. ,feng h.-j.
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منبع
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journal of chemistry - 2013 - دوره : 2013 - شماره : 0
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چکیده
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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. © 2013 dong-sheng shen et al.
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آدرس
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college of environmental science and engineering,zhejiang gongshang university,zhejiang,hangzhou 310018,china,zhejiang provincial key laboratory of solid waste treatment and recycling,zhejiang gongshang university,zhejiang, China, college of environmental science and engineering,zhejiang gongshang university,zhejiang, China, china sinomach heavy industry corporation, China, juhua group corporation,zhejiang, China, college of environmental science and engineering,zhejiang gongshang university,zhejiang,hangzhou 310018,china,zhejiang provincial key laboratory of solid waste treatment and recycling,zhejiang gongshang university,zhejiang, China
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Authors
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