利用H+浓度变化控制含Cl-的氨氮废水的电解时间

莫恒亮; 陈亦力; 文剑平; 俞开昌; 吴文辉; 万平玉; 唐阳; 李锁定

PDF(582 KB)

中国环境科学 ›› 2020, Vol. 40 ›› Issue (12) : 5325-5330.

水污染与控制

利用H⁺浓度变化控制含Cl^-的氨氮废水的电解时间

莫恒亮¹, 陈亦力¹, 文剑平², 俞开昌², 吴文辉¹, 万平玉³, 唐阳³, 李锁定¹

作者信息 +

Control of electrolysis time of ammonia nitrogen wastewater containing Cl^- by H⁺ concentration change

MO Heng-liang¹, CHEN Yi-li¹, WEN Jian-ping², YU Kai-chang², WU Wen-hui¹, WAN Ping-yu³, TANG Yang³, LI Suo-ding¹

Author information +

文章历史 +

摘要

采用电化学间接氧化法处理含Cl^-的中高浓度氨氮废水，针对不同浓度的氨氮废水的电解时间的控制，提出利用废水的H⁺浓度变化控制氨氮废水实际处理时间.从理论计算及对模拟和实际氨氮废水进行电解分析发现：当废水氨氮还没有完全降解时，每一个NH₄⁺降解的过程中会生成一个H⁺，c（H⁺）随着时间线性上升；当氨氮刚好完全降解时，c（H⁺）达到最大值；此后继续电解且废水pH＜7时，电解过程形成的OH^-会持续消耗H⁺，c（H⁺）随着时间线性下降.利用pH计实时监测废水的pH值，通过程控信号转换器进行c（H⁺）与pH值的换算，将pH值信号转化为c（H⁺）信号，可提高决策的准确性和灵敏度.

Abstract

The indirect electrochemical oxidation method was used to treat high or medium concentration ammonia nitrogen wastewater containing Cl^-. The change of H⁺ concentration of wastewater was used to control the electrolysis time of different concentration ammonia nitrogen wastewater. Based on theoretical calculation and electrolytic analysis of simulated and actual ammonia nitrogen wastewater, it was found that when the ammonia nitrogen in wastewater had not been completely degraded, one H⁺ would be generated in the degradation process of each NH₄⁺, c(H⁺) would rise linearly with time; when the ammonia nitrogen just completely degraded, c(H⁺) would reach the maximum value; after that, when the electrolysis continued and the pH of wastewater was less than 7, the OH^- formed in the electrolysis process would continue to consume H⁺, and c(H⁺) declined linearly with time. Using pH meter to monitor the pH of waste water in real time, and through the program-controlled signal converter, the pH value signal was converted into c(H⁺) signal, which could improve the accuracy and sensitivity of decision-making.

导出引用

莫恒亮, 陈亦力, 文剑平, 俞开昌, 吴文辉, 万平玉, 唐阳, 李锁定. 利用H⁺浓度变化控制含Cl^-的氨氮废水的电解时间[J]. 中国环境科学. 2020, 40(12): 5325-5330

MO Heng-liang, CHEN Yi-li, WEN Jian-ping, YU Kai-chang, WU Wen-hui, WAN Ping-yu, TANG Yang, LI Suo-ding. Control of electrolysis time of ammonia nitrogen wastewater containing Cl^- by H⁺ concentration change[J]. China Environmental Science. 2020, 40(12): 5325-5330

中图分类号： X703.1

参考文献

[1] 刘思远,郝瑞霞,王丽沙,等.分子筛脱硅对其结构与吸附氨氮性能的影响[J]. 中国环境科学, 2019,39(12):5029-5039. Liu S Y, Hao R X, Wang L S, et al. Effect of molecular sieve desilication on its structure and adsorption of ammonia nitrogen[J]. China Environmental Science, 2019,39(12):5029-5039.
[2] 孙彤,郝瑞霞,武旭源,等.天然沸石定向合成A型分子筛及其脱氮性能[J]. 中国环境科学, 2020,40(2):623-630. Sun T, Hao R X, Wu X Y, et al. Targeted synthesis of type-A molecular sieve based on natural zeolite and its denitrification performance[J]. China Environmental Science, 2020,40(2):623-630.
[3] 李文静,李军,张彦灼,等.NaCl改性沸石对水中氨氮的吸附机制[J]. 中国环境科学, 2016,36(12):3567-3575. Li W J, Li J, Zhang Y Z, et al. Adsorption mechanism of ammonium from aqueous solutions by NaCl modified zeolite[J]. China Environmental Science, 2016,36(12):3567-3575.
[4] 孙彤,郝瑞霞,武旭源,等.天然沸石合成A型分子筛的吸附与再生特性[J]. 中国环境科学, 2020,40(7):2926-2933. Sun T, Hao R X, Wu X Y, et al. Adsorption and regeneration characteristics of type-A molecular sieve synthesized from natural zeolite[J]. China Environmental Science, 2020,40(7):2926-2933.
[5] 李晓,刘碧武,郭军.折点加氯法去除生活污水氨氮的试验研究[J]. 能源环境保护, 2019,33(5):32-35. Li X, Liu B W, Guo J. Experimental study on ammonia removal from domestic sewage by breakpoint chlorination[J]. Energy Environmental Protection, 2019,33(5):32-35.
[6] 李柏林,任晓玲,李晔,等.溶解氧对单级颗粒污泥自养脱氮系统影响的模拟[J]. 中国环境科学, 2019,39(12):5126-5133. Li B L, Ren X L, Li Y, et al. Simulation study on the effect of dissolved oxygenon single-stage granular sludge autotrophic nitrogen removal system[J]. China Environmental Science, 2019,39(12):5126-5133.
[7] 李海鑫,刘秀红,杨忠启,等.调整气水比优化高氨氮废水BAF一体化脱氮[J]. 中国环境科学, 2019,39(9):3807-3813. Li H X, Liu X H, Yang Z Q, et al. Optimization of the integrated nitrogen removal process of high ammonia nitrogen wastewater in BAF by adjusting the gas water ratio[J]. China Environmental Science, 2019,39(9):3807-3813.
[8] 郑照明,李军,马静,等.SNAD生物膜厌氧氨氧化活性的氨氮抑制动力学研究[J]. 中国环境科学, 2016,36(10):2957-2963. Zheng Z M, Li J, Ma J, et al. The kinetic coefficients of ammonium inhibition on the Anammox activity of SNAD biofilm[J]. China Environmental Science, 2016,36(10):2957-2963.
[9] 杨美娟,刘祥,王凯军,等.固定化微藻流化床反应器去除低碳污水中氨氮的潜力[J]. 中国环境科学, 2020,40(5):2040-2046. Yang M J, Liu X, Wang K J, et al. The potential of immobilized microalgae fluidized bed reactor for removing ammonium from low carbon wastewater[J]. China Environmental Science, 2020,40(5):2040-2046.
[10] 李冬,曹瑞华,杨航,等.生物净化低温高铁锰氨氮地下水氨氮去除机制[J]. 中国环境科学, 2017,37(7):2623-2632. Li D, Cao R H, Yang H, et al. Removal mechanism of ammonia nitrogen in bio-purification process for high iron and manganese removal from low temperature groundwater[J]. China Environmental Science, 2017,37(7):2623-2632.
[11] 邓凯文,李建政,赵博玮.WFSI处理低C/N比养猪废水的效果及脱氮机制[J]. 中国环境科学, 2016,36(1):87-91. Deng K W, Li J Z, Zhao B W. Efficiency and denitrification mechanism in a wood-chip-framework soil infiltrator treating piggery wastewater with low C/N ratio[J]. China Environmental Science, 2016,36(1):87-91.
[12] 王鹏,刘伟藻,方汉平.垃圾渗沥液中氨氮的电化学氧化[J]. 中国环境科学, 2000,20(4):289-291. Wang P, Liu W Z, Fang H P. Electrochemical oxidation of landfill leachate[J]. China Environmental Science, 2000,20(4):289-291.
[13] 赵贤广,杨世慧,邱明建,等.负压蒸发-吹脱组合新技术处理垃圾沥滤液高浓度氨氮实验研究[J]. 现代化工, 2020,40(2):187-190,195. Zhao X G, Yang S H, Qiu M J, et al. Experimental study on treatment of high concentration ammoniacal nitrogen in landfill leachate by negative pressure evaporation-stripping combined technology[J]. Modern Chemical Industry, 2020,40(2):187-190,195.
[14] Yin S H, Chen K H, Srinivasakannan C, et al. Enhancing recovery of ammonia from rare earth wastewater by air stripping combination of microwave heating and high gravity technology[J]. Chemical Engineering Journal, 2018,337:515-521.
[15] Zhang C Y, Ma J X, He D, et al. Capacitive membrane stripping for ammonia recovery (CapAmm) from dilute wastewaters[J]. Environmental Science & Technology Letters, 2018,5(1):43-49.
[16] 王春荣,李炟,胡建龙,等.电化学氧化除氨氮过程中羟基自由基及中间产物定量分析[J]. 中国环境科学, 2012,32(2):238-241. Wang C Y, Li D, Hu J L, et al. The quantitative analysis of hydroxyl radical produced and intermediate products in the process of electrochemical oxidation for ammonia removal[J]. China Environmental Science, 2012,32(2):238-241.
[17] 姜辉,周德鸿,陈卫国,等.三维电极处理氨氮废水的电化学反应特性[J]. 中国环境科学, 2014,34(10):2551-2555. Jiang H, Zhou D H, Chen W G, et al. Preliminary exploration of electrochemical reaction characteristics in three-dimensional electrode treatment ammonia wastewater[J]. China Environmental Science, 2014,34(10):2551-2555.
[18] 陈金銮,施汉昌,徐丽丽.pH值对氨氮电化学氧化产物与氧化途径的影响[J]. 环境科学, 2008,29(8):2277-2281. Chen J L, Shi H C, Xu L L. Effect of pH for the electrochemical oxidation products and oxidation pathways of ammonia[J]. Environmental Science, 2008,29(8):2277-2281.
[19] Kim K W, Kim Y J, Kim I T, et al. Electrolytic decomposition mechanism of ammonia to nitrogen at IrO₂ anode[J]. Electrochimica Acta, 2005,50(22):4356-4364.
[20] Laisa C, José Antonio C, Ponciano G. Evaluation of anode materials for the electro-oxidation of ammonia and ammonium ions[J]. Materials Chemistry and Physics, 2011,129(3):1146-1151.
[21] 朱艳,汪家权,陈少华,等.氯离子对氨氮电化学氧化的影响[J]. 环境工程学报, 2013,7(7):2619-2623. Zhu Y, Wang J Q, Chen S H, et al. Effect of chloride ion on ammonia electrochemical oxidation[J]. Chinese Journal of Environmental Engineering, 2013,7(7):2619-2623.
[22] Chen J L, Shi H C, Lu J H. Electrochemical treatment of ammonia in wastewater by RuO₂-IrO₂-TiO₂/Ti electrodes[J]. Journal of Applied Electrochemistry, 2007,37(10):1137-1144.
[23] Kapalka A, Joss L, Anglada A, et al. Direct and mediated electrochemical oxidation of ammonia on boron-doped diamond electrode[J]. Electrochemistry Communications, 2010,12(12):1714-1717.
[24] Steven L V, Lionel R, Daniel B. Study of the electrochemical oxidation of ammonia on platinum in alkaline solution:Effect of electrodeposition potential on the activity of platinum[J]. Journal of Electroanalytical Chemistry, 2013,691:18-27.
[25] 马小霞,袁玉南,唐金晶,等.电化学氧化法去除电解锰渣中的氨氮[J]. 环境化学, 2016,35(12):2592-2598. Ma X X, Yuan Y N, Tang J J, et al. Removal of ammonia nitrogen from electrolytic manganese residue by electrochemical oxidation[J]. Environmental Chemistry, 2016,35(12):2592-2598.