GUOChao,PENGYan,XIEQiong,et al.Al-modified Zeolite Loaded with Oxygen Nanobubbles for Remediation of Black and Odorous Water[J].China Water & Wastewater,2024,40(19):102-108.
Al-modified Zeolite Loaded with Oxygen Nanobubbles for Remediation of Black and Odorous Water
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第40卷
Number:
第19期
Page:
102-108
Column:
Date of publication:
2024-10-01
- Abstract:
- The effects of various treatment approaches on black and odorous water bodies were explored by establishing three sets of experimental apparatuses: adding Al-modified zeolite loaded with oxygen nanobubbles and cultivating aquatic plants (plant and passivator group), cultivating aquatic plants solely (pure plant group), and neither cultivating aquatic plants nor applying passivator (control group). The release of nitrogen and phosphorus in the sediment was effectively inhibited through the addition of Al-modified zeolite loaded with oxygen nanobubbles. On Day 70, the TP in the control group and the pure plant group showed the most significant difference from the plant and passivator group, and increased by 260.14% and 218.23%, respectively, compared with the plant and passivator group. On Day 40, the concentration of dissolved active phosphorus (SRP) in the control group and the pure plant group exhibited the most significant difference from that in the plant and passivator group, being 122.97% and 74.32% higher respectively than that in the plant and passivator group. After Day 70, the average TP in the plant and passivator group decreased by 71.23% compared with the control group and by 58.40% compared with the pure plant group, respectively. After Day 40, the average concentration of SRP in the plant and passivator group was reduced by 54.40% compared with the control group and by 38.71% compared with the pure plant group, respectively. On Day 70, TN in the control group and the pure plant group showed the most significant difference from the plant and passivator group, and increased by 41.42% and 65.29%, respectively, compared with the plant and passivator group. On Day 60, the concentration of NH4+-N in the control group and the pure plant group exhibited the most significant difference from that in the plant and passivator group, being 96.17% and 83.82% higher respectively than that in the plant and passivator group. The addition of Al-modified zeolite loaded with oxygen nanobubbles conspicuously enhanced the transparency of overlying water, decreased the content of chlorophyll a, and marginally reduced the concentration of nitrogen and phosphorus in overlying water. The water transparency of the plant and passivator group was 130.77% higher than that of the control group and 58.73% higher than that of the pure plant group. The concentration of chlorophyll a in the plant and passivator group was decreased by 55.56% compared with the control group and by 50% compared with the pure plant group.
Last Update:
2024-10-01