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.
硝酸鈣輔助生物膜法用于污染河道原位修復
- Title:
- In Situ Remediation of Polluted River Using Combination of Calcium Nitrate and Biofilm Carrier
- 文章編號:
- 1000-4602(2018)21-0031-06
- Keywords:
- polluted river; in situ bioremediation; biostimulation; acid volatile sulfide; biofilm; calcium nitrate
分類號:- TU992
文獻標志碼:- A
摘要:- 硝酸鈣原位修復技術可有效抑制底泥黑臭現象，但也存在引發(fā)上覆水體有機物和TN濃度升高的可能。為此，在投加硝酸鈣削減底泥污染物的同時，利用生物膜法控制底泥污染物的釋放對上覆水體的影響。結果表明，聯合修復的效果優(yōu)于硝酸鈣單獨處理效果。在投加適量的生物填料條件下，上覆水體總磷的去除率為83.9%，氨氮的去除率可達84.8%，有機物的去除率為49.0%，底泥酸揮發(fā)性硫化物(AVS)的去除率達92.7%。聯合修復對水體總氮濃度的控制也有積極的效果，相比單獨投加硝酸鈣，上覆水體總氮的含量降低了50.0%。另外，生物填料密度對污染河道上覆水體修復效果有明顯的影響。
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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備注/Memo
基金項目：國家重點研發(fā)計劃項目(2016YFC0401500、2016YFC0401507)；上海市科委課題(16DZ1204802)
通信作者：袁海平E-mail:hpyuan@sjtu.edu.cn
作者簡介： 馬君妍（1992- ），女，江蘇揚州人，碩士研究生，從事河流修復研究。
E-mail：Junyeon@sjtu.edu.cn
收稿日期：2018-06-11
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