Treatment of high-concentration ammonia-nitrogen tungsten smelting wastewater by struvite precipitation method

doi:10.19965/j.cnki.iwt.2025-0247

Abstract

Abstract:

Eutrophication of water bodies threatens the balance of ecosystems and poses potential environmental risks. Therefore, strengthening the control of water eutrophication is of great practical significance. In view of the high ammonia-nitrogen concentration and the difficulty in treating tungsten smelting wastewater, this study adopted the struvite precipitation method to conduct experiments on ammonia-nitrogen removal and resource recovery, aiming to explore the optimal reaction conditions. Through single-factor and orthogonal experiments, the effects of temperature, pH, n(Mg)∶n(N), n(P)∶n(N), reaction time and initial ammonia-nitrogen concentration in wastewater on the ammonia-nitrogen removal rate were systematically investigated. The results showed that pH was the most critical factor affecting the ammonia-nitrogen removal rate. Under the experimental conditions of pH=10.5, temperature of 30 ℃, molar ratio of magnesium, nitrogen and phosphorus of 1.2∶1∶1.2 and reaction time of 20 min, the ammonia-nitrogen(initial concentration of 9 850 mg/L) removal rate was over 90%, and the synchronous COD removal rate was over 40%, creating conditions for the subsequent treatment of wastewater. The struvite purity of the reaction precipitate was detected and analyzed to be over 85%, with rich nitrogen and phosphorus content, indicating that it was an efficient compound fertilizer. This experiment confirmed that the struvite precipitation method was suitable for the pretreatment of high-concentration ammonia-nitrogen tungsten smelting wastewater. Compared with other technologies, it had dual economic and environmental benefits and broad prospects for engineering application.

Key words: tungsten smelting wastewater, high-concentration ammonia-nitrogen, struvite, precipitation

摘要：

水体富营养化威胁生态系统的平衡，构成潜在的环境风险，加强水体富营养化问题的治理具有重要的现实意义。针对钨冶炼废水氨氮浓度高、处理难度大的特点，采用鸟粪石沉淀法进行氨氮去除与资源化回收实验，旨在探索最优反应条件。通过单因素及正交实验系统考察了温度、pH、n（Mg）∶n（N）、n（P）∶n（N）、反应时间和废水中氨氮初始浓度对氨氮去除率的影响。结果表明，pH是影响氨氮去除率的最关键因素，在pH=10.5，温度30 ℃，n（Mg）∶n（N）∶n（P）=1.2∶1∶1.2以及反应时间20 min条件下，氨氮（初始质量浓度为9 850 mg/L）去除率达90%以上，COD同步去除率达40%以上，为废水的后续处理创造了条件。检测分析表明，反应沉淀物中鸟粪石质量分数超过85%，其氮、磷含量丰富，是一种高效的复合肥。鸟粪石沉淀法适用于高浓度氨氮钨冶炼废水的预处理，与其他技术相比，具有经济和环境双重效益，工程化应用前景广阔。

关键词: 钨冶炼废水, 高氨氮, 鸟粪石, 沉淀

CLC Number:

X703.1

Jun LUO, Shaolang HE, Xin YIN. Treatment of high-concentration ammonia-nitrogen tungsten smelting wastewater by struvite precipitation method[J]. Industrial Water Treatment, 2026, 46(2): 85-90.

罗军, 何绍浪, 尹鑫. 鸟粪石沉淀法处理高浓度氨氮钨冶炼废水[J]. 工业水处理, 2026, 46(2): 85-90.

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URL: https://www.iwt.cn/EN/10.19965/j.cnki.iwt.2025-0247

https://www.iwt.cn/EN/Y2026/V46/I2/85

Figures/Tables 9

References 20

[1]	XIANG Shuyu， LIU Yuhuan， ZHANG Guangming，et al. New progress of ammonia recovery during ammonia nitrogen removal from various wastewaters［J］. World Journal of Microbiology and Biotechnology，2020，36（10）：144. doi:10.1007/s11274-020-02921-3
[2]	HAN Bing， BUTTERLY C， ZHANG Wei，et al. Adsorbent materials for ammonium and ammonia removal：A review［J］. Journal of Cleaner Production，2021，283：124611. doi:10.1016/j.jclepro.2020.124611
[3]	MENG Fangang， WANG Yuan， HUANG Linan，et al. A novel nonwoven hybrid bioreactor（NWHBR） for enhancing simultaneous nitrification and denitrification［J］. Biotechnology and Bioengineering，2013，110（7）：1903-1912.
[4]	CIUDAD G， RUBILAR O， MUÑOZ P，et al. Partial nitrification of high ammonia concentration wastewater as a part of a shortcut biological nitrogen removal process［J］. Process Biochemistry，2005，40（5）：1715-1719. doi:10.1016/j.procbio.2004.06.058
[5]	STRATFUL I， SCRIMSHAW M D， LESTER J N. Conditions influencing the precipitation of magnesium ammonium phosphate［J］. Water Research，2001，35（17）：4191-4199.
[6]	白晓凤，李子富，闫园园，等. 吹脱与鸟粪石沉淀组合工艺处理中温厌氧发酵沼液研究［J］. 农业机械学报，2015，46（12）：218-225.
	BAI Xiaofeng， LI Zifu， YAN Yuanyuan，et al. Treatment of liquid digestate by stripping combined with struvite precipitation［J］. Transactions of the Chinese Society for Agricultural Machinery，2015，46（12）：218-225.
[7]	殷若愚，陈云嫩，何彩庆，等. 载铜树脂处理高含盐氨氮废水的性能［J］. 过程工程学报，2020，20（11）：1289-1295.
	YIN Ruoyu， CHEN Yunnen， HE Caiqing，et al. Treatment performance of ammonia-nitrogen wastewater containing high salt by copper-loaded resin［J］. The Chinese Journal of Process Engineering，2020，20（11）：1289-1295.
[8]	丁鑫，高克昌，郝二国，等. 超重力强化折点氯化法处理低浓度氨氮废水［J］. 化工进展，2021，40（7）：4083-4090.
	DING Xin， GAO Kechang， HAO Erguo，et al. Treatment of low concentration ammonia nitrogen wastewater by high gravity enhanced breakpoint chlorination［J］. Chemical Industry and Engineering Progress，2021，40（7）：4083-4090.
[9]	徐浩然，冯向东，封立林，等. 连续型电化学氧化系统处理电厂含氨废水的研究［J］. 工业水处理，2020，40（9）：35-39.
	XU Haoran， FENG Xiangdong， FENG Lilin，et al. Treatment of ammonia-containing wastewater in power plant by continuous electrochemical oxidation system［J］. Industrial Water Treatment，2020，40（9）：35-39.
[10]	李洪刚，陈玉成，肖广全，等. 鸟粪石结晶法处理牛场沼液过程中磷形态转化［J］. 农业工程学报，2016，32（3）：228-233.
	LI Honggang， CHEN Yucheng， XIAO Guangquan，et al. Phosphorous transformation during cattle farm biogas slurry treatment using struvite crystallization［J］. Transactions of the Chinese Society of Agricultural Engineering，2016，32（3）：228-233.
[11]	唐登勇，张聪，徐建强，等. 鸟粪石沉淀法预处理中等浓度氨氮废水研究［J］. 应用化工，2018，47（2）：258-261.
	TANG Dengyong， ZHANG Cong， XU Jianqiang，et al. Research of medium concentration ammonia nitrogen wastewater pretreatment by struvite precipitation［J］. Applied Chemical Industry，2018，47（2）：258-261.
[12]	AAGE H K， ANDERSEN B L， BLOM A，et al. The solubility of struvite［J］. Journal of Radioanalytical and Nuclear Chemistry，1997，223（1）：213-215. doi:10.1007/bf02223387
[13]	李爱秀，翟中葳，丁飞飞，等. 鸟粪石沉淀法回收猪场沼液氮磷工艺参数优化模拟研究［J］. 农业环境科学学报，2018，37（6）：1270-1276.
	LI Aixiu， ZHAI Zhongwei， DING Feifei，et al. Simulation of optimization of process parameters of nitrogen and phosphorus recovery in biogas slurry derived from swine manure by struvite precipitation method［J］. Journal of Agro-Environment Science，2018，37（6）：1270-1276.
[14]	WANG C C， HAO X D， GUO G S，et al. Formation of pure struvite at neutral pH by electrochemical deposition［J］. Chemical Engineering Journal，2010，159（1/2/3）：280-283. doi:10.1016/j.cej.2010.02.026
[15]	LI Wei， DING Xiaowen， LIU Min，et al. Optimization of process parameters for mature landfill leachate pretreatment using MAP precipitation［J］. Frontiers of Environmental Science & Engineering，2012，6（6）：892-900. doi:10.1007/s11783-012-0440-9
[16]	段鲁娟，曹井国，熊发，等. 鸟粪石沉淀法处理鸡粪发酵沼液的实验研究［J］. 环境工程，2015，33（7）：66-71.
	DUAN Lujuan， CAO Jingguo， XIONG Fa，et al. Experimental study of chicken manure fermentation liquid treatment by struvite precipitation［J］. Environmental Engineering，2015，33（7）：66-71.
[17]	员建，苑宏英，陈轶，等. 化学沉淀法回收污泥中氮磷的影响因素研究［J］. 环境科学与技术，2011，34（6）：148-151.
	YUAN Jian， YUAN Hongying， CHEN Yi，et al. Impact factors on recovery of nitrogen and phosphorus by chemical precipitation in sludge［J］. Environmental Science & Technology，2011，34（6）：148-151.
[18]	曾庆玲，沈春花. 鸟粪石结晶法回收氨氮影响因素的研究［J］. 环境科学与技术，2012，35（1）：80-83，98.
	ZENG Qingling， SHEN Chunhua. Experimental study on recovery of ammonia-nitrogen by struvite precipitation method［J］. Environmental Science & Technology，2012，35（1）：80-83，98.
[19]	肖艳. 透析橡胶助剂工业废水的环保治理新途径［J］. 染整技术，2015，37（9）：47-52.
	XIAO Yan. Analysis of new method for environmental protection and control of industrial wastewater from rubber additive［J］. Textile Dyeing and Finishing Journal，2015，37（9）：47-52.
[20]	宁桂兴，高良敏，程家迪，等. 甲胺生产废水中氨氮资源化的实验研究［J］. 环境污染与防治，2008，30（3）：43-46.
	NING Guixing， GAO Liangmin， CHENG Jiadi，et al. Experimental study on reutilization of ammonia nitrogen from methylamine manufacturing wastewater［J］. Environmental Pollution & Control，2008，30（3）：43-46.

序号	pH	n（P）∶n（N）	n（Mg）∶n（N）	T/℃	氨氮去除率/%
1	9.5	1.0	1.0	15	72.26
2	9.5	1.1	1.1	20	73.58
3	9.5	1.2	1.2	30	74.34
4	10.0	1.0	1.1	30	82.92
5	10.0	1.1	1.2	15	83.37
6	10.0	1.2	1.0	20	83.14
7	10.5	1.0	1.2	20	84.68
8	10.5	1.1	1.0	30	84.95
9	10.5	1.2	1.1	15	85.22
K ₁	73.39	79.95	80.12	80.28
K ₂	83.31	80.63	80.57	80.47
K ₃	84.78	80.90	80.80	80.74
R	11.39	0.95	0.68	0.46

序号	pH	n（P）∶n（N）	n（Mg）∶n（N）	T/℃	氨氮去除率/%
1	9.5	1.0	1.0	15	72.26
2	9.5	1.1	1.1	20	73.58
3	9.5	1.2	1.2	30	74.34
4	10.0	1.0	1.1	30	82.92
5	10.0	1.1	1.2	15	83.37
6	10.0	1.2	1.0	20	83.14
7	10.5	1.0	1.2	20	84.68
8	10.5	1.1	1.0	30	84.95
9	10.5	1.2	1.1	15	85.22
K ₁	73.39	79.95	80.12	80.28
K ₂	83.31	80.63	80.57	80.47
K ₃	84.78	80.90	80.80	80.74
R	11.39	0.95	0.68	0.46

序号	剩余氨氮/（mg·L^-1）	氨氮去除率/%	COD去除率/%
1	928	90.6	42.5
2	809	91.8	41.6
3	849	91.4	42.3

序号	剩余氨氮/（mg·L^-1）	氨氮去除率/%	COD去除率/%
1	928	90.6	42.5
2	809	91.8	41.6
3	849	91.4	42.3

样品（序号）	N质量分数/%	P₂O₅质量分数/%	Mg质量分数/%	MgNH₄PO₄·6H₂O/g	MgNH₄PO₄·6H₂O质量分数/%
纯鸟粪石	5.70	28.90	9.90	1.000 0	100.00
1	5.01	29.13	10.92	0.866 5	86.65
2	5.02	29.14	10.94	0.857 6	85.76
3	5.06	29.16	10.95	0.856 4	85.64

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