天堂国产午夜亚洲专区-少妇人妻综合久久蜜臀-国产成人户外露出视频在线-国产91传媒一区二区三区

當(dāng)前位置:主頁 > 科技論文 > 礦業(yè)工程論文 >

不同修復(fù)材料對鉛鋅尾砂中DTPA浸提態(tài)Pb、Zn、Cu、Cd含量的影響

發(fā)布時(shí)間:2018-05-02 22:58

  本文選題:鉛鋅尾砂 + 土壤修復(fù); 參考:《環(huán)境工程》2016年09期


【摘要】:采礦業(yè)產(chǎn)生的大量尾砂作為典型的污染源,其含有的重金屬等有害成分在雨水浸淋下會直接或間接對周邊環(huán)境造成污染。為研究尾砂中重金屬的污染修復(fù)技術(shù),以湖南郴州某廢棄礦區(qū)的尾砂為研究對象,通過添加質(zhì)量分?jǐn)?shù)為2.0%的生石灰、還原鐵粉、過磷酸鈣等廉價(jià)修復(fù)材料,對尾砂中DTPA浸提態(tài)Pb、Zn、Cu、Cd的含量變化進(jìn)行研究,并就其含量變化所體現(xiàn)的時(shí)間效應(yīng)及機(jī)理進(jìn)行探討。研究發(fā)現(xiàn),還原鐵粉對尾砂的修復(fù)作用最好,其次是過磷酸鈣。還原鐵粉使得尾砂中DTPA浸提態(tài)Pb、Zn、Cu、Cd的含量分別降低了59.91%,56.53%,75.81%,35.78%;過磷酸鈣使得尾砂DTPA浸提態(tài)Pb、Zn、Cu、Cd的含量分別降低了48.85%,44.27%,44.27%,39.23%,可為尾砂中重金屬穩(wěn)定化工程實(shí)施提供參考。
[Abstract]:A large amount of tailings produced by mining industry as a typical source of pollution, its heavy metals and other harmful components in the leaching of Rain Water will directly or indirectly cause pollution to the surrounding environment. In order to study the remediation technology of heavy metals in tailings, the tailings of an abandoned mining area in Chenzhou, Hunan Province were studied. By adding 2.0% of quicklime, reducing iron powder, superphosphate and other cheap restoration materials, The content change of DTPA extracted PbPb-ZnOCU / CD in tailings was studied, and the time effect and mechanism of the change were discussed. It was found that reducing iron powder had the best effect on tailings, followed by calcium superphosphate. The reduced iron powder reduced the content of DTPA extracted DTPA in tailing sand by 59.91% and 56.53% and 75.81% respectively, and calcium superphosphate reduced the content of DTPA extracted state Pb ~ (2 +) Zn ~ (2 +) Cu ~ (2 +) in tailings by 48.85% (44.2744.27) ~ 39.23 ~ (23), respectively, which could provide reference for the implementation of heavy metal stabilization engineering in tailings.
【作者單位】: 深圳市鐵漢生態(tài)與環(huán)境股份有限公司;
【基金】:廣東省軟科學(xué)研究計(jì)劃項(xiàng)目鐵漢生態(tài)研究院建設(shè)(2014B090903015) 深圳市科技計(jì)劃項(xiàng)目(CXZZ20140418105252027) 深圳市戰(zhàn)略性新興產(chǎn)業(yè)發(fā)展專項(xiàng)資金(發(fā)改辦高技[2012]1065號,GCZX20120618100801416)
【分類號】:X753;X53
,

本文編號:1835847

資料下載
論文發(fā)表

本文鏈接:http://sikaile.net/kejilunwen/kuangye/1835847.html


Copyright(c)文論論文網(wǎng)All Rights Reserved | 網(wǎng)站地圖 |

版權(quán)申明:資料由用戶2b034***提供,本站僅收錄摘要或目錄,作者需要刪除請E-mail郵箱bigeng88@qq.com
五月的丁香婷婷综合网| 大尺度激情福利视频在线观看| 激情偷拍一区二区三区视频| 蜜桃av人妻精品一区二区三区| 经典欧美熟女激情综合网| 日韩欧美国产三级在线观看| 黄片在线免费看日韩欧美| 殴美女美女大码性淫生活在线播放 | 日本在线 一区 二区| 日韩av亚洲一区二区三区| 成人精品日韩专区在线观看| 九九热精品视频免费在线播放| 天堂av一区一区一区| 男生和女生哪个更好色| 在线观看视频日韩精品| 欧洲日韩精品一区二区三区| 国产成人精品久久二区二区| 好吊日成人免费视频公开| 亚洲精品国产精品日韩| 色婷婷国产精品视频一区二区保健| 亚洲欧美日韩熟女第一页| 尹人大香蕉一级片免费看| 99精品国产自在现线观看| 欧美午夜一级艳片免费看| 国产伦精品一区二区三区精品视频| 久久少妇诱惑免费视频| 国产麻豆一线二线三线| 东京热加勒比一区二区三区 | 国产又粗又猛又长又大| 精品人妻一区二区三区免费看| 中国日韩一级黄色大片| 嫩草国产福利视频一区二区| 少妇视频一区二区三区| 国产一区二区三区成人精品| 我的性感妹妹在线观看| 国产欧美精品对白性色| 免费啪视频免费欧美亚洲| 国产又粗又长又大高潮视频| 男人的天堂的视频东京热| 日本午夜免费福利视频| 日本不卡一本二本三区|