本文選題：原位處理 + 沉積物��； 參考：《環(huán)境科學(xué)與技術(shù)》2016年S2期

【摘要】：為研究原位處理技術(shù)對沉積物-水系統(tǒng)中氮磷元素的影響,采用了硝酸鈣、硫酸鋁、硫酸鐵和鎖磷劑4種原位處理劑處理底泥,測定了沉積物-水系統(tǒng)中氮磷的形態(tài)和含量。結(jié)果表明:4種原位處理劑都使間隙水中總磷和溶解性磷濃度顯著降低;硫酸鋁使上覆水中總磷和溶解性磷濃度降低,硝酸鈣使上覆水中磷含量升高;4種處理劑對沉積物中磷形態(tài)變化影響顯著,硝酸鈣使松散態(tài)磷和氧化還原敏感磷含量升高,硫酸鋁和硫酸鐵分別增加了金屬氧化物結(jié)合磷和氧化還原敏感磷含量,鎖磷劑使較易釋放的磷轉(zhuǎn)變?yōu)檩^穩(wěn)定的形態(tài);硫酸鐵和硫酸鋁的使用使上覆水中pH降低,這幾種處理劑都會使沉積物-水系統(tǒng)中氨氮和總氮含量有所升高。綜合以上結(jié)果,硫酸鋁原位處理效果最好,鎖磷劑可降低沉積物中磷釋放的風(fēng)險,但只有在劑量足夠時,才具有去除上覆水中磷的能力。
[Abstract]:In order to study the effect of in-situ treatment on nitrogen and phosphorus in sediment-water system, calcium nitrate, aluminum sulfate, ferric sulfate and phosphorus-locking agent were used to treat sediment. The forms and contents of nitrogen and phosphorus in sediment water system were determined. The results showed that the concentrations of total phosphorus and dissolved phosphorus in interstitial water were significantly decreased by in situ treatment of%, and the concentrations of total phosphorus and dissolved phosphorus in overlying water were decreased by aluminum sulfate. The phosphorus content in overlying water was increased by calcium nitrate. Four treatments had a significant effect on the change of phosphorus forms in sediments. Calcium nitrate increased the contents of loose phosphorus and redox sensitive phosphorus. Aluminum sulfate and ferric sulfate increased the content of metal oxide bound phosphorus and redox sensitive phosphorus respectively, and phosphorus locking agent changed the easily released phosphorus into a more stable form, while the use of ferric sulfate and aluminum sulfate reduced the pH of the overlying water. These treatments can increase ammonia nitrogen and total nitrogen content in sediment-water system. Combined with the above results, aluminum sulfate in situ treatment is the best, phosphorus locking agent can reduce the risk of phosphorus release in sediment, but only when the dosage is sufficient, can remove phosphorus from overlying water.
【作者單位】： 中國科學(xué)院水生生物研究所;杭州市市區(qū)河道監(jiān)管中心;
【基金】：杭州市重大科技創(chuàng)新項(xiàng)目(20131813A04) 住房和城鄉(xiāng)建設(shè)部科學(xué)技術(shù)項(xiàng)目(2014-K7-014)
【分類號】：X524

【相似文獻(xiàn)】

相關(guān)期刊論文 前8條

1 李甲亮;胡相明;董小娜;邱楊玉;朱金方;趙洪陽;;高校優(yōu)質(zhì)中水原位處理系統(tǒng)及實(shí)驗(yàn)研究[J];山東科技大學(xué)學(xué)報(自然科學(xué)版);2008年01期

2 許柱;榮露;朱榮衛(wèi);;填埋場滲濾液原位處理綜述[J];廣西輕工業(yè);2010年04期

3 李甲亮;王琳;陸兆華;陳平;董曉娜;;用于高校優(yōu)質(zhì)中水原位處理的設(shè)備研究[J];環(huán)境工程學(xué)報;2007年11期

4 ;城市公共衛(wèi)生間(WC)糞便原位處理生態(tài)反應(yīng)器[J];中國環(huán)保產(chǎn)業(yè);2006年09期

5 韓炳泉;郭志濤;蔣磊;;移動床生物膜變形工藝原位處理水產(chǎn)養(yǎng)殖廢水的研究[J];安徽農(nóng)業(yè)科學(xué);2011年12期

6 狄軍貞;江富;馬龍;李愛華;;礦井水井下原位處理的PRB活性材料組合修復(fù)能力研究[J];煤炭學(xué)報;2013年10期

7 董軍,趙勇勝,趙曉波,王蕾,肖艷波,趙U，

本文編號：1971228