本文選題：土壤氟污染 + 水溶態(tài)氟��； 參考：《環(huán)境科學(xué)與技術(shù)》2016年S2期

【摘要】：以貴州省開陽縣金中鎮(zhèn)境內(nèi)某磷肥廠周邊的氟污染土壤為研究對象,通過添加改良劑并于室溫條件下養(yǎng)護(hù)穩(wěn)定進(jìn)行修復(fù)研究,并分析生石灰(CaO)與鈣鎂磷肥(FCMP)聯(lián)用對土壤pH和土壤水溶態(tài)氟含量的影響,探討其影響土壤水溶態(tài)氟含量的機(jī)理和對氟污染土壤的修復(fù)效果。實(shí)驗(yàn)共設(shè)置了7個CaO與FCMP質(zhì)量比水平和4個添加量水平,在一致養(yǎng)護(hù)條件下,分析不同處理的土壤pH及水溶態(tài)氟含量變化。結(jié)果表明:CaO與FCMP聯(lián)用,可以與土壤中氟生成氟化鈣、氟磷酸鈣等沉淀,并影響土壤膠體、有機(jī)基團(tuán)等對F~-的吸附能力;與CaO、FCMP單獨(dú)添加相比較,二者聯(lián)用可以增強(qiáng)改良劑對土壤水溶態(tài)氟的抑制效果;綜合考慮土壤pH對植物生長的影響、實(shí)際應(yīng)用性價比等因素,CaO與FCMP質(zhì)量比為3∶1,添加量為土壤質(zhì)量的0.5%~1.0%時,改良劑對供試氟污染土壤的修復(fù)效果最優(yōu),可以使土壤水溶態(tài)氟含量下降82.94%~86.45%,土壤pH值則由3.94上升至5.71~7.00。
[Abstract]:Using fluorine contaminated soil around a phosphate fertilizer plant in Jinzhong Town, Kaiyang County, Guizhou Province as the research object, the remediation of fluorine contaminated soil was studied by adding modifier and maintaining and stabilizing at room temperature. The effects of calcium hydroxide (Cao) combined with FCMP on soil pH and soluble fluorine content in soil water were analyzed, and the mechanism of influencing soil water soluble fluorine content and the remediation effect of fluorine contaminated soil were discussed. Seven Cao / FCMP mass ratio levels and four additive levels were set up in the experiment. Under the same curing conditions, the changes of soil pH and water-soluble fluorine content in different treatments were analyzed. The results showed that the combination of FCMP and Cao could produce calcium fluoride, calcium fluoride phosphate and other precipitates in soil, and affect the adsorption ability of soil colloids and organic groups to FC-, which was compared with that of CaOG FCMP alone. The combined use of the two modifiers can enhance the inhibition effect of the modifier on the soluble fluorine in soil water. Considering the effect of soil pH on plant growth, the practical application of such factors as the ratio of Cao to FCMP mass is 3: 1, and the addition amount is 0.5 ~ 1.0% of the soil quality. The soil water soluble fluorine content decreased 82.94 and 86.45, and the soil pH increased from 3.94 to 5.71 to 7.00.
【作者單位】： 深圳市鐵漢生態(tài)與環(huán)境股份有限公司;
【基金】：廣東省省級科技計劃項(xiàng)目(2015B090904008) 深圳市科技計劃項(xiàng)目(CXZZ20140418105252027) 廣東省生態(tài)環(huán)境建設(shè)與保護(hù)(鐵漢)工程技術(shù)研究中心(粵科函政字[2013]1589號)
【分類號】：X53

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