Mixotrophic Denitrification of Glucose Polymer-Based Pyrite Tailings for Enhanced Nitrogen and Phosphorus Removal of Municipal Tailwater

Water

Shuguang Zhu¹  Jie Mao¹  Bai Sun¹  Mengqi He²  Haojie Che²  Chun Cheng²  Xinyu Wang³  Meng Wang⁴ 

[1] Engineering Research Center of Ministry of Education, Anhui Jianzhu University, Hefei 230601, China;Key Laboratory of Water Pollution Control and Wastewater Recycling of Anhui Province, Hefei 230601, China;Nanjing University Environmental Planning and Design Research Institute Group Co., Nanjing 211500, China;School of Environmental and Energy Engineering, Anhui Jianzhu University, Hefei 230601, China;

关键词: pyrite tailings;    autotrophic denitrification;    heterotrophic denitrification;   

DOI  :  10.3390/w14121868

来源: DOAJ

【 摘 要 】

In order to improve the removal ability of nitrogen and phosphorus pollutants from sewage with low C/N ratio, this study prepared the glucose polymer-based pyrite tailings with core-shell structure through glucose polymerizing on the surface of pyrite tailings particles and constructed a heterotrophic-sulfur autotrophic mixed-denitrification system. The experimental results show that compared with ordinary pyrite tailings, pyrite tailings modified by glucose polymer can improve the water quality of pH, enhance the ability to remove NO₃⁻ in water, and prolong the ability of mineral to continuously treat sewage, which also has a good removal effect on PO₄³⁻ in water. The results of this study are of great significance to solve the excessive nitrogen and phosphorus in the secondary effluent and alleviate the eutrophication of the natural water.

【 授权许可】

Unknown