MA Jun yan,WU Bi,ZHU Nan wen,et al.In Situ Remediation of Polluted River Using Combination of Calcium Nitrate and Biofilm Carrier[J].China Water & Wastewater,2018,34(21):31-36.
In Situ Remediation of Polluted River Using Combination of Calcium Nitrate and Biofilm Carrier
- Article number:
- 1000-4602(2018)21-0031-06
- Keywords:
- polluted river; in situ bioremediation; biostimulation; acid volatile sulfide; biofilm; calcium nitrate
- CLC:
- TU992
- Document code:
- A
- Abstract:
- Calcium nitrate in situ bioremediation technology can effectively inhibit the black and odor of sediment, but it may also cause the increase of organic matter and total nitrogen content in overlying water. Addition of calcium nitrate combined with biofilm carrier was applied to control the release of pollutants from sediments. The results showed that the remediation effect of combined process was better than that of dosing calcium nitrate alone. Under the condition of adding appropriate amount of carriers, the removal rates of total phosphorus, ammonia nitrogen and organic matter in the overlying water were 83.9%, 84.8% and 49.0%, respectively. The removal rate of acid volatile sulfide (AVS) was 92.7%. Compared with the blank group, the TN concentration was decreased by 50.0%. In addition, the density of biofilm carrier had a significant effect on the sediments remediation. The suitable density of biofilm carrier can be applied in the engineering.
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Memo
基金项目:国家重点研发计划项目(2016YFC0401500、2016YFC0401507);上海市科委课题(16DZ1204802)
通信作者:袁海平E-mail:hpyuan@sjtu.edu.cn
作者简介:
马君妍(1992- ),女,江苏扬州人,硕士研究生,从事河流修复研究。
E-mail:Junyeon@sjtu.edu.cn
收稿日期:2018-06-11