不同原位处理对黑臭底泥污染物抑制效果分析
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摘要
为掌握不同原位处理对黑臭底泥污染物释放抑制效果的差异从而指导工程实践,于2015年12月11日—2016年1月28日采用室外模拟实验,研究了硝酸钙(Ca(NO_3)_2)、过氧化钙(CaO_2)及沸石3种材料以5种不同原位处理方式对黑臭底泥污染物释放的抑制效果。实验期间,各处理对COD_(Mn)抑制效果顺序为:沸石+CaO_2>CaO_2>空白>沸石+Ca(NO_3)_2>Ca(NO_3)_2,对TP抑制效果顺序为:沸石+Ca(NO_3)_2>Ca(NO_3)_2>沸石+CaO_2>CaO_2>沸石>空白,对NH_3-N抑制效果顺序为:沸石+Ca(NO_3)_2>沸石+CaO_2>沸石>CaO_2>Ca(NO_3)_2>空白。研究结果表明:上述实验材料均可抑制底泥污染物释放但效果不一,且同种处理对不同污染物抑制效果也不尽相同。沸石覆盖的加入大大加强了单一材料对黑臭底泥污染物抑制的效果,但各实验材料对污染物抑制效果均具有时效性,随着药效衰退抑制效果会逐渐减弱,因此在工程实践中应根据需要选择合适处理方式及定期补充材料以持续发挥抑制作用。
In order to know the pollutant release inhibition effect of different in-situ treatments on black-odor sediment and guide the engineering practice,from December 11,2015 to January 28,2016,outdoor large glass cylinder simulation experiment was conducted. The inhibition effects of five different in-situ treatment methods of calcium nitrate( Ca(NO_3)_2),calcium peroxide( CaO_2) and zeolite on the black-odor sediment pollutants were studied. The inhibition effect of each treatment method on COD_(Mn) in the experimental period was in the order of zeolite +calcium peroxide >calcium peroxide >blank >zeolite +calcium nitrate >calcium nitrate,and the inhibition effect on TP was in the order: zeolite+calcium nitrate>calcium nitrate> zeolite+calcium peroxide>calcium peroxide>zeolite>blank,the inhibition effect on NH_3-N was in the order of zeolite+calcium nitrate>zeolite+calcium peroxide>zeolite>calcium peroxide>calcium nitrate>blank. The results showed that: the experimental materials above all could inhibit the release of sediment pollutants,but they had different effect,and the same treatment method had different inhibition effects on different pollutants. The addition of zeolite capping greatly enhanced the inhibition effect of single material on black-odor sediment pollutants,the inhibition effect of each experimental material on pollutants had time-effectiveness,and with the decline in efficacy of materials,the inhibition effect would be weakened. Therefore,it was required to choose appropriate treatment method according to the needs and supplement materials regularly to continue to play the role of inhibition.
In order to know the pollutant release inhibition effect of different in-situ treatments on black-odor sediment and guide the engineering practice,from December 11,2015 to January 28,2016,outdoor large glass cylinder simulation experiment was conducted. The inhibition effects of five different in-situ treatment methods of calcium nitrate( Ca(NO_3)_2),calcium peroxide( CaO_2) and zeolite on the black-odor sediment pollutants were studied. The inhibition effect of each treatment method on COD_(Mn) in the experimental period was in the order of zeolite +calcium peroxide >calcium peroxide >blank >zeolite +calcium nitrate >calcium nitrate,and the inhibition effect on TP was in the order: zeolite+calcium nitrate>calcium nitrate> zeolite+calcium peroxide>calcium peroxide>zeolite>blank,the inhibition effect on NH_3-N was in the order of zeolite+calcium nitrate>zeolite+calcium peroxide>zeolite>calcium peroxide>calcium nitrate>blank. The results showed that: the experimental materials above all could inhibit the release of sediment pollutants,but they had different effect,and the same treatment method had different inhibition effects on different pollutants. The addition of zeolite capping greatly enhanced the inhibition effect of single material on black-odor sediment pollutants,the inhibition effect of each experimental material on pollutants had time-effectiveness,and with the decline in efficacy of materials,the inhibition effect would be weakened. Therefore,it was required to choose appropriate treatment method according to the needs and supplement materials regularly to continue to play the role of inhibition.
引文
[1]张启超,杨鑫,孙淑雲,等.过氧化钙在处理厌氧底泥中的应用初探[J].湖泊科学,2015,27(6):1087-1092.
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[3]刘军,刘彤宙,赵达.原位注射硝酸钙技术修复污染底泥操作对底泥中硝态氮和氨氮释放的影响[J].水利水电技术,2015,46(2):23-27.
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[8]王霖,种云霄,余光伟,等.黑臭底泥硝酸钙原位氧化的温度影响及微生物群落结构全过程分析[J].农业环境科学学报,2015,34(6):1187-1195.
[9]赵振.氧化试剂(硝酸钙)控制黑臭底泥营养盐释放的效果研究[J].环境科技,2010,23(4):17-19.
[10]宗栋良,张光明.硝酸钙在底泥修复中的作用机理及应用现状[J].中国农村水利水电,2006(4):52-54.
[11]路斌,魏南,余德光,等.添加硝酸钙对池塘沉积物中理化因子的影响研究[J].中国农学通报,2015,31(26):51-55.
[12]林建伟,朱志良,赵建夫.硝酸钙对底泥有机物及氮磷迁移循环的影响[J].农业环境科学学报,2007,26(1):58-63.
[13] Arienzo M. Degradation of 2,4,6-trinitrotoluene in water and soil slurry utilizing a calcium peroxide compound[J]. Chemosphere,2000,40(4):331-337.
[14]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.
[15]杨华,席劲瑛,胡洪营,等.投加化学药剂改善城市黑臭河流水质的研究[J].环境科学与技术,2012,35(增刊1):295-298.
[16]张丹. CaO2对控制河道底泥磷释放效果的研究[J].环境工程,2012,30(增刊2):532-534.
[17]张亚雷,章明,李建华,等. CaO2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.
[18]孙远军,李小平,黄廷林.稳定剂控制底泥中磷元素释放的机理性研究[J].中国环境科学,2008,28(8):764-768.
[19]孙远军,卢士强,邵一平,等.几种不同稳定剂抑制河流底泥释磷效果的初步研究[J].上海环境科学,2014,33(1):1-10.
[20]余光伟,余绵梓,种云霄,等.投加硝酸钙对城市黑臭河道底泥氮迁移转化的影响[J].环境工程学报,2015,9(8):3625-3632.
[21] S■ndergaard M,Jeppesen E,Jensen J P. Hypolimnetic nitrate treatment to reduce internal phosphorus loading in a stratified lake[J]. Lake and Reservoir management,2000,16(3):195-204.
[22]林建伟,朱志良,赵建夫,等.无机盐改性对沸石覆盖技术控制底泥氮磷释放的影响研究[J].湖泊科学,2007,19(1):52-57.
[23]张卫,熊邦,林匡飞,等.不同覆盖方式对底泥内源营养盐释放的控制效果[J].应用生态学报,2012,23(6):1677-1681.
[2]孙士权,邱媛,蒋昌波,等.原位技术控制湖泊沉积物中磷释放的研究[J].中国环境科学,2011,31(5):845-851.
[3]刘军,刘彤宙,赵达.原位注射硝酸钙技术修复污染底泥操作对底泥中硝态氮和氨氮释放的影响[J].水利水电技术,2015,46(2):23-27.
[4]叶恒朋,陈繁忠,盛彦清,等.覆盖法控制城市河涌底泥磷释放研究[J].环境科学学报,2006,26(2):262-268.
[5]徐丽花,周琪.沸石去除废水中氨氮及其再生[J].中国给水排水,2003,19(3):24-26.
[6]刘启明,成路,沈冰心,等.沸石覆盖层控制水库底泥氮磷释放的影响因素[J].集美大学学报(自然科学版),2010,15(5):338-341.
[7]王熙,孙飞云,董文艺.用过氧化钙控制城市河道底泥嗅味物质及氮磷释放试验研究[J].水利水电技术,2012,43(8):66-69.
[8]王霖,种云霄,余光伟,等.黑臭底泥硝酸钙原位氧化的温度影响及微生物群落结构全过程分析[J].农业环境科学学报,2015,34(6):1187-1195.
[9]赵振.氧化试剂(硝酸钙)控制黑臭底泥营养盐释放的效果研究[J].环境科技,2010,23(4):17-19.
[10]宗栋良,张光明.硝酸钙在底泥修复中的作用机理及应用现状[J].中国农村水利水电,2006(4):52-54.
[11]路斌,魏南,余德光,等.添加硝酸钙对池塘沉积物中理化因子的影响研究[J].中国农学通报,2015,31(26):51-55.
[12]林建伟,朱志良,赵建夫.硝酸钙对底泥有机物及氮磷迁移循环的影响[J].农业环境科学学报,2007,26(1):58-63.
[13] Arienzo M. Degradation of 2,4,6-trinitrotoluene in water and soil slurry utilizing a calcium peroxide compound[J]. Chemosphere,2000,40(4):331-337.
[14]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.
[15]杨华,席劲瑛,胡洪营,等.投加化学药剂改善城市黑臭河流水质的研究[J].环境科学与技术,2012,35(增刊1):295-298.
[16]张丹. CaO2对控制河道底泥磷释放效果的研究[J].环境工程,2012,30(增刊2):532-534.
[17]张亚雷,章明,李建华,等. CaO2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.
[18]孙远军,李小平,黄廷林.稳定剂控制底泥中磷元素释放的机理性研究[J].中国环境科学,2008,28(8):764-768.
[19]孙远军,卢士强,邵一平,等.几种不同稳定剂抑制河流底泥释磷效果的初步研究[J].上海环境科学,2014,33(1):1-10.
[20]余光伟,余绵梓,种云霄,等.投加硝酸钙对城市黑臭河道底泥氮迁移转化的影响[J].环境工程学报,2015,9(8):3625-3632.
[21] S■ndergaard M,Jeppesen E,Jensen J P. Hypolimnetic nitrate treatment to reduce internal phosphorus loading in a stratified lake[J]. Lake and Reservoir management,2000,16(3):195-204.
[22]林建伟,朱志良,赵建夫,等.无机盐改性对沸石覆盖技术控制底泥氮磷释放的影响研究[J].湖泊科学,2007,19(1):52-57.
[23]张卫,熊邦,林匡飞,等.不同覆盖方式对底泥内源营养盐释放的控制效果[J].应用生态学报,2012,23(6):1677-1681.
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