CaO_2不同投加方式对黑臭河道底泥内源磷释放抑制作用
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摘要
以S市某黑臭河道底泥和上覆水为研究材料,研究了CaO_2在3种不同投加方式下对内源磷释放的抑制效果.结果表明CaO_2在3种投加方式下,均导致上覆水中pH和DO有所增加.注射条件下,上覆水DO浓度明显低于覆盖,说明注射确实延缓了CaO_2的氧化速度,有利于创造底泥微氧化环境.CaO_2覆盖和注射条件下,上覆水中TP和DIP浓度以及变化趋势基本一致,均明显低于混匀条件.但是,覆盖条件下,间隙水中DIP浓度最高,达到注射条件下的120.33~142.18倍.相反,注射条件下,间隙水中DIP浓度最低,并且上覆水中DIP浓度也较低,说明注射条件下CaO_2对内源磷的释放确有抑制作用,这与其创造的微氧化环境密切相关.底泥中不同形态磷数量分布也证实了这一点.投加CaO_2加快了有机磷的矿化速度,铁铝结合态磷和钙结合态磷也明显增加,使得内源磷持留能力增强.
The inhibition of sedimentary phosphorus( P) was investigated under the CaO_2 with 3 addition ways. The overlying water and sediments came from a black-odor channel in S City. The results showed that the value of pH and DO in the overlying water increased under the 3 addition ways of CaO_2. Under the condition of injection,the DO concentration of the overlying water was lower than that of the covering condition,which indicated that the injection could delay the oxidation of CaO_2 and be favor of creating the micro-oxidation environment in the sediment. The concentrations and the trend of TP and DIP in the overlying water were similar under the injection and covering,which were lower than that in the mixing condition. However,under the covering condition,the DIP concentration in the pore water was the highest,reaching up to 120. 33-142. 18 times,compared with the injection condition. Noticeably,the DIP in the pore water and the overlying water was lower,indicating that the addition of CaO_2 could inhibit the release of sedimentary P. This was attributed to the micro-oxidation environment. The sedimentary P fractions also confirmed this. The explanation may be that the addition of CaO_2 accelerated the mineralization of organophosphate and the formation of Fe-Al/P and Ca-P,which enhanced the retention of sedimentary P.
The inhibition of sedimentary phosphorus( P) was investigated under the CaO_2 with 3 addition ways. The overlying water and sediments came from a black-odor channel in S City. The results showed that the value of pH and DO in the overlying water increased under the 3 addition ways of CaO_2. Under the condition of injection,the DO concentration of the overlying water was lower than that of the covering condition,which indicated that the injection could delay the oxidation of CaO_2 and be favor of creating the micro-oxidation environment in the sediment. The concentrations and the trend of TP and DIP in the overlying water were similar under the injection and covering,which were lower than that in the mixing condition. However,under the covering condition,the DIP concentration in the pore water was the highest,reaching up to 120. 33-142. 18 times,compared with the injection condition. Noticeably,the DIP in the pore water and the overlying water was lower,indicating that the addition of CaO_2 could inhibit the release of sedimentary P. This was attributed to the micro-oxidation environment. The sedimentary P fractions also confirmed this. The explanation may be that the addition of CaO_2 accelerated the mineralization of organophosphate and the formation of Fe-Al/P and Ca-P,which enhanced the retention of sedimentary P.
引文
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[17]Zhang A,Wang J,Li Y M.Performance of calcium peroxide for removal of endocrine-disrupting compounds in waste activated sludge and promotion of sludge solubilization[J].Water Research,2015,71:125-139.
[18]Qian Y J,Zhou X F,Zhang Y L,et al.Performance and properties of nanoscale calcium peroxide for toluene removal[J].Chemosphere,2013,91(5):717-723.
[19]Khodaveisi J,Banejad H,Afkhami A,et al.Synthesis of calcium peroxide nanoparticles as an innovative reagent for in situ chemical oxidation[J].Journal of Hazardous Materials,2011,192(3):1437-1440.
[20]Olyaie E,Banejad H,Afkhami A,et al.Development of a costeffective technique to remove the arsenic contamination from aqueous solutions by calcium peroxide nanoparticles[J].Separation and Purification Technology,2012,95:10-15.
[21]张亚雷,章明,李建华,等.Ca O2不同投加方式对底泥磷释放的抑制效果分析[J].环境科学,2006,27(11):2188-2193.Zhang Y L,Zhang M,Li J H,et al.Effect on different adding means of calcium peroxide to control phosphorus release from sediment[J].Environmental Science,2006,27(11):2188-2193.
[22]张静,周雪飞,钱雅洁.过氧化钙在环境修复应用中的研究进展[J].环境化学,2014,33(2):321-326.Zhang J,Zhou X F,Qian Y J.Research progress of the application of calcium peroxide in environmental remediation[J].Environmental Chemistry,2014,33(2):321-326.
[23]张丹.Ca O2对控制河道底泥磷释放效果的研究[J].环境工程,2012,30(S2):532-534.Zhang D.Research on the effect of calcium peroxide on control of sediment phosphorus release[J].Environmental Engineering,2012,30(S2):532-534.
[24]熊鑫,柯凡,李勇,等.过氧化钙对水中低浓度磷的去除性能[J].湖泊科学,2015,27(3):493-501.Xiong X,Ke F,Li Y,et al.Low concentration of phosphorus removal in waters with Ca O2[J].Journal of Lake Sciences,2015,27(3):493-501.
[25]吴昊,孙丽娜,王辉,等.Ca O2/Fe2+活化过硫酸钠对石油类污染土壤的修复效果[J].环境化学,2016,35(4):623-628.Wu H,Sun L N,Wang H,et al.Remediation of petroleum hydrocarbon-contaminated soils by Ca O2/Fe2+activatal persulfate[J].Environmental Chemistry,2016,35(4):623-628.
[26]朱培颖,李大鹏,于胜楠.灼烧净水污泥投加方式对磷吸附和磷形态的影响[J].环境科学,2017,doi:10.13227/j.hjkx.201610120.(in Press)Zhu P Y,Li D P,Yu S N.Effect of different adding means of ignited water purification sludge on phosphorus adsorption and forms[J].Environmental Science,2017,doi:10.13227/j.hjkx.201610120.(in Press)
[27]揣小明,杨柳燕,程书波,等.太湖和呼伦湖沉积物对磷的吸附特征及影响因素[J].环境科学,2014,35(3):951-957.Chuai X M,Yang L Y,Cheng S B,et al.Characteristics and influencing factors of phosphorus adsorption on sediment in Lake Taihu and Lake Hulun[J].Environmental Science,2014,35(3):951-957.
[28]李安定,张义,周北海,等.富营养化湖泊沉积物磷原位控制技术[J].水生生物学报,2014,38(2):370-374.Li A D,Zhang Y,Zhou B H,et al.In-situ control technology of phosphorus in sediment of eutrophic lake[J].Acta Hydrobiologica Sinica,2014,38(2):370-374.
[29]李思敏,白苏媛,张炜.浅水湖泊表层沉积物磷素赋存形态及其相关性分析[J].环境污染与防治,2014,36(5):9-12.Li S M,Bai S Y,Zhang W.Phosphorus forms in surface sediments of shallow lake and their correlation analysis[J].Environmental Pollution&Control,2014,36(5):9-12.
[30]冀峰,王国祥,韩睿明,等.太湖流域农村黑臭河流沉积物中磷形态的垂向分布特征[J].环境科学学报,2016,36(1):55-63.Ji F,Wang G X,Han R M,et al.Vertical distribution characteristics of phosphorus fractions in the sediments of a rural malodorous black River in Taihu Lake Area[J].Acta Scientiae Circumstantiae,2016,36(1):55-63.
[2]Jing L D,Liu X L,Bai S,et al.Effects of sediment dredging on internal phosphorus:a comparative field study focused on iron and phosphorus forms in sediments[J].Ecological Engineering,2015,82:267-271.
[3]Ellison M E,Brett M T.Particulate phosphorus bioavailability as a function of stream flow and land cover[J].Water Research,2006,40(6):1258-1268.
[4]孔明,尹洪斌,晁建颖,等.凹凸棒黏土覆盖对沉积物磷赋存形态的影响[J].中国环境科学,2015,35(7):2192-2199.Kong M,Yin H B,Chao J Y,et al.Influence of attapulgite clay capping on phosphorus forms in the sediment[J].China Environmental Science,2015,35(7):2192-2199.
[5]武晓飞,李大鹏,汪明,等.反复扰动下加藻对不同形态磷相互转化的影响[J].中国环境科学,2015,35(4):1187-1196.Wu X F,Li D P,Wang M,et al.Migration and transformation of phosphorus forms under dual effect of sediment resuspension and the addition of algae[J].China Environmental Science,2015,35(4):1187-1196.
[6]李大鹏,黄勇,李祥.底泥加入铁盐对水体磷的吸收和固定[J].环境化学,2013,32(5):797-802.Li D P,Huang Y,Li X.Phosphorus adsorption and immobility by sediments with ferric salt addition[J].Environmental Chemistry,2013,32(5):797-802.
[7]李大鹏,黄勇.太湖梅梁湾和月亮湾春夏两季沉积物扰动下BAPP的转化规律[J].环境科学学报,2013,33(10):2766-2773.Li D P,Huang Y.Transformation of BAPP under sediment disturbance of Meiliang Bay and Moon Bay in Lake Tai during spring and summer[J].Acta Scientiae Circumstantiae,2013,33(10):2766-2773.
[8]李飞鹏,张海平,陈玲.小型封闭水体环境因子与叶绿素a的时空分布及相关性研究[J].环境科学,2013,34(10):3854-3861.Li F P,Zhang H P,Chen L.Temporal and spatial distribution of environmental factors and chlorophyll-a and their correlation analysis in a small enclosed lake[J].Environmental Science,2013,34(10):3854-3861.
[9]李大鹏,黄勇,袁砚,等.城市重污染河道底泥对外源磷的吸附和固定机制[J].环境科学,2011,32(1):96-101.Li D P,Huang Y,Yuan Y,et al.Mechanism of phosphorus adsorption and immobility by sediments in inner-city heavily polluted canal[J].Environmental Science,2011,32(1):96-101.
[10]O'Neal J A,Boyer T H.Phosphorus recovery from urine and anaerobic digester filtrate:comparison of adsorption-precipitation with direct precipitation[J].Environmental Science:Water Research&Technology,2015,1(4):481-492.
[11]王忍,李大鹏,黄勇,等.物理和生物组合扰动对底泥微界面过程的影响[J].环境科学,2015,36(11):4112-4120.Wang R,Li D P,Huang Y,et al.Development of sediment micro-interface under physical and Chironomus plumosus combination disturbance[J].Environmental Science,2015,36(11):4112-4120.
[12]史晓丹,李勇,李大鹏,等.摇蚊幼虫扰动下沉积物微环境和微界面对物理扰动强度的响应[J].环境科学,2015,36(5):1622-1629.Shi X D,Li Y,Li D P,et al.Response of sediment micro environment and micro interface to physical disturbance intensity under the disturbance of Chironomus plumosus[J].Environmental Science,2015,36(5):1622-1629.
[13]李大鹏,黄勇.底泥扰动在水体富营养化发展进程中的作用[J].中国给水排水,2009,25(14):10-16.Li D P,Huang Y.Effect of sediment disturbance on development of water eutrophication[J].China Water&Wastewater,2009,25(14):10-16.
[14]李大鹏,黄勇,李伟光.底泥预处理对磷等温吸附特征及磷形态的影响[J].中国环境科学,2007,27(3):346-351.Li D P,Huang Y,Li W G.Influence of different sediments pretreatment on phosphorus adsorption characteristics and phosphorus forms[J].China Environmental Science,2007,27(3):346-351.
[15]Dittrich M,Chesnyuk A,Gudimov A,et al.Phosphorus retention in a mesotrophic lake under transient loading conditions:insights from a sediment phosphorus binding form study[J].Water Research,2013,47(3):1433-1447.
[16]李大鹏,黄勇,李伟光.河道底泥再悬浮状态对磷平衡浓度的影响[J].中国环境科学,2008,28(5):476-480.Li D P,Huang Y,Li W G.Influence of sediment re-suspension on the equilibrium phosphate concentration(EPC0)of river course sediments[J].China Environmental Science,2008,28(5):476-480.
[17]Zhang A,Wang J,Li Y M.Performance of calcium peroxide for removal of endocrine-disrupting compounds in waste activated sludge and promotion of sludge solubilization[J].Water Research,2015,71:125-139.
[18]Qian Y J,Zhou X F,Zhang Y L,et al.Performance and properties of nanoscale calcium peroxide for toluene removal[J].Chemosphere,2013,91(5):717-723.
[19]Khodaveisi J,Banejad H,Afkhami A,et al.Synthesis of calcium peroxide nanoparticles as an innovative reagent for in situ chemical oxidation[J].Journal of Hazardous Materials,2011,192(3):1437-1440.
[20]Olyaie E,Banejad H,Afkhami A,et al.Development of a costeffective technique to remove the arsenic contamination from aqueous solutions by calcium peroxide nanoparticles[J].Separation and Purification Technology,2012,95:10-15.
[21]张亚雷,章明,李建华,等.Ca O2不同投加方式对底泥磷释放的抑制效果分析[J].环境科学,2006,27(11):2188-2193.Zhang Y L,Zhang M,Li J H,et al.Effect on different adding means of calcium peroxide to control phosphorus release from sediment[J].Environmental Science,2006,27(11):2188-2193.
[22]张静,周雪飞,钱雅洁.过氧化钙在环境修复应用中的研究进展[J].环境化学,2014,33(2):321-326.Zhang J,Zhou X F,Qian Y J.Research progress of the application of calcium peroxide in environmental remediation[J].Environmental Chemistry,2014,33(2):321-326.
[23]张丹.Ca O2对控制河道底泥磷释放效果的研究[J].环境工程,2012,30(S2):532-534.Zhang D.Research on the effect of calcium peroxide on control of sediment phosphorus release[J].Environmental Engineering,2012,30(S2):532-534.
[24]熊鑫,柯凡,李勇,等.过氧化钙对水中低浓度磷的去除性能[J].湖泊科学,2015,27(3):493-501.Xiong X,Ke F,Li Y,et al.Low concentration of phosphorus removal in waters with Ca O2[J].Journal of Lake Sciences,2015,27(3):493-501.
[25]吴昊,孙丽娜,王辉,等.Ca O2/Fe2+活化过硫酸钠对石油类污染土壤的修复效果[J].环境化学,2016,35(4):623-628.Wu H,Sun L N,Wang H,et al.Remediation of petroleum hydrocarbon-contaminated soils by Ca O2/Fe2+activatal persulfate[J].Environmental Chemistry,2016,35(4):623-628.
[26]朱培颖,李大鹏,于胜楠.灼烧净水污泥投加方式对磷吸附和磷形态的影响[J].环境科学,2017,doi:10.13227/j.hjkx.201610120.(in Press)Zhu P Y,Li D P,Yu S N.Effect of different adding means of ignited water purification sludge on phosphorus adsorption and forms[J].Environmental Science,2017,doi:10.13227/j.hjkx.201610120.(in Press)
[27]揣小明,杨柳燕,程书波,等.太湖和呼伦湖沉积物对磷的吸附特征及影响因素[J].环境科学,2014,35(3):951-957.Chuai X M,Yang L Y,Cheng S B,et al.Characteristics and influencing factors of phosphorus adsorption on sediment in Lake Taihu and Lake Hulun[J].Environmental Science,2014,35(3):951-957.
[28]李安定,张义,周北海,等.富营养化湖泊沉积物磷原位控制技术[J].水生生物学报,2014,38(2):370-374.Li A D,Zhang Y,Zhou B H,et al.In-situ control technology of phosphorus in sediment of eutrophic lake[J].Acta Hydrobiologica Sinica,2014,38(2):370-374.
[29]李思敏,白苏媛,张炜.浅水湖泊表层沉积物磷素赋存形态及其相关性分析[J].环境污染与防治,2014,36(5):9-12.Li S M,Bai S Y,Zhang W.Phosphorus forms in surface sediments of shallow lake and their correlation analysis[J].Environmental Pollution&Control,2014,36(5):9-12.
[30]冀峰,王国祥,韩睿明,等.太湖流域农村黑臭河流沉积物中磷形态的垂向分布特征[J].环境科学学报,2016,36(1):55-63.Ji F,Wang G X,Han R M,et al.Vertical distribution characteristics of phosphorus fractions in the sediments of a rural malodorous black River in Taihu Lake Area[J].Acta Scientiae Circumstantiae,2016,36(1):55-63.