EXPERIMENTAL STUDY ON REMEDIATION OF SEDIMENTS IN URBAN BLACK-ODOROUS
RIVERS BY DENITRIFYING BACTERIA

Tu Weiling; Hu Zhanbo; Liang Yicong; Lu Hui; Liu Kaihua; Jiang Zhe

doi:10.13205/j.hjgc.201510002

Volume 33 Issue 10

Jun. 2016

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Tu Weiling, Hu Zhanbo, Liang Yicong, Lu Hui, Liu Kaihua, Jiang Zhe. EXPERIMENTAL STUDY ON REMEDIATION OF SEDIMENTS IN URBAN BLACK-ODOROUSRIVERS BY DENITRIFYING BACTERIA[J]. ENVIRONMENTAL ENGINEERING , 2015, 33(10): 5-9. doi: 10.13205/j.hjgc.201510002

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Tu Weiling, Hu Zhanbo, Liang Yicong, Lu Hui, Liu Kaihua, Jiang Zhe. EXPERIMENTAL STUDY ON REMEDIATION OF SEDIMENTS IN URBAN BLACK-ODOROUS RIVERS BY DENITRIFYING BACTERIA[J]. ENVIRONMENTAL ENGINEERING , 2015, 33(10): 5-9. doi: 10.13205/j.hjgc.201510002

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EXPERIMENTAL STUDY ON REMEDIATION OF SEDIMENTS IN URBAN BLACK-ODOROUS RIVERS BY DENITRIFYING BACTERIA

doi: 10.13205/j.hjgc.201510002

Publish Date: 2015-10-22

Abstract

Abstract

The effects of denitrifying bacteria dosage on the bioremediation of sediments were explored． The sediments，as well as water samples，taken from Chaoyang Creek in Nanning with four different dosages of denitrifying bacteria were studied under laboratory conditions． The results showed that the dosage of denitrifying bacteria at 0. 5 g /m3 had better bioremediation effect of sediments than other three dosages after 6 weeks，the sediment thickness decreased 3. 43 cm，removal efficiency of organic matters was 13. 6%，growth rate of G was 280. 8%，the oxide layer was about 0. 7 cm，every indexes achieved stability after 25 days． The dosage of denitrifying bacteria at 0. 25 g /m3 was better than others to improve water quality，the removal rates of COD，NH3－N，TN and TP in overlying water reached 76. 5%，94. 4%，87. 8% and 79. 4% respectively after 6 weeks．
- denitrifying bacteria,
- black-odorous river,
- sediments,
- in-situ remediation

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