Distribution Characteristics of Typical Heavy Metals in Sludge from Wastewater Plants in Jiangsu Province (China) and Their Potential Risks
Recently, increasing attention has been paid to heavy metals in sludge. However, limited literature could be found on the distribution characteristics of heavy metals in sludge and their potential risks. In this study, sludges from wastewater plants in Jiangsu Province (China) were selected for the...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-01-01
|
| Series: | Water |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4441/15/2/313 |
| _version_ | 1797436338116493312 |
|---|---|
| author | Dandan Xiao He Li Yizhuo Wang Guixin Wen Chencheng Wang |
| author_facet | Dandan Xiao He Li Yizhuo Wang Guixin Wen Chencheng Wang |
| author_sort | Dandan Xiao |
| collection | DOAJ |
| description | Recently, increasing attention has been paid to heavy metals in sludge. However, limited literature could be found on the distribution characteristics of heavy metals in sludge and their potential risks. In this study, sludges from wastewater plants in Jiangsu Province (China) were selected for the investigation of heavy metal loadings, showing that typical heavy metal levels were in the order of Zn > Cu > Cr > Ni > Pb > As > Hg > Cd, ranging from 154 to 2970 mg/kg, 28 to 1150 mg/kg, 10 to 136 mg/kg, 9 to 262 mg/kg, 0 to 79 mg/kg, 12.1 to 41.6 mg/kg, 0.67 to 19.50 mg/kg and 0.21 to 2.77 mg/kg, respectively. Analysis of the typical heavy metal distribution in sludge indicated that Hg, Zn and Cu were obviously influenced by the degree of industrial intensity and exploitation of human activities, while Ni, Cd, Pb, As and Cr were more evenly distributed. Effects of sewage sources and wastewater-treatment processes on heavy metal levels implied that different industrial wastewaters resulted in different metal contents, but the distribution of Ni, Cd, Pb, As and Cr in different treatment processes was similar. Furthermore, Hg and Cd had the strongest ecological risk, with their levels reaching severe, suggesting that sludge was not recommended for agricultural reuse in this study. |
| first_indexed | 2024-03-09T11:01:11Z |
| format | Article |
| id | doaj.art-6dd34785c3f7439eb7402da91a8dc2c4 |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-09T11:01:11Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Water |
| spelling | doaj.art-6dd34785c3f7439eb7402da91a8dc2c42023-12-01T01:17:03ZengMDPI AGWater2073-44412023-01-0115231310.3390/w15020313Distribution Characteristics of Typical Heavy Metals in Sludge from Wastewater Plants in Jiangsu Province (China) and Their Potential RisksDandan Xiao0He Li1Yizhuo Wang2Guixin Wen3Chencheng Wang4School of Civil Engineering, Southeast University, Nanjing 211189, ChinaSchool of Civil Engineering, Southeast University, Nanjing 211189, ChinaSchool of Civil Engineering, Southeast University, Nanjing 211189, ChinaSchool of Civil Engineering, Southeast University, Nanjing 211189, ChinaSchool of Environmental and Safety Engineering, Jiangsu University, Zhenjiang 212013, ChinaRecently, increasing attention has been paid to heavy metals in sludge. However, limited literature could be found on the distribution characteristics of heavy metals in sludge and their potential risks. In this study, sludges from wastewater plants in Jiangsu Province (China) were selected for the investigation of heavy metal loadings, showing that typical heavy metal levels were in the order of Zn > Cu > Cr > Ni > Pb > As > Hg > Cd, ranging from 154 to 2970 mg/kg, 28 to 1150 mg/kg, 10 to 136 mg/kg, 9 to 262 mg/kg, 0 to 79 mg/kg, 12.1 to 41.6 mg/kg, 0.67 to 19.50 mg/kg and 0.21 to 2.77 mg/kg, respectively. Analysis of the typical heavy metal distribution in sludge indicated that Hg, Zn and Cu were obviously influenced by the degree of industrial intensity and exploitation of human activities, while Ni, Cd, Pb, As and Cr were more evenly distributed. Effects of sewage sources and wastewater-treatment processes on heavy metal levels implied that different industrial wastewaters resulted in different metal contents, but the distribution of Ni, Cd, Pb, As and Cr in different treatment processes was similar. Furthermore, Hg and Cd had the strongest ecological risk, with their levels reaching severe, suggesting that sludge was not recommended for agricultural reuse in this study.https://www.mdpi.com/2073-4441/15/2/313ecological risksheavy metalspollutant distributionsewage plantssludge |
| spellingShingle | Dandan Xiao He Li Yizhuo Wang Guixin Wen Chencheng Wang Distribution Characteristics of Typical Heavy Metals in Sludge from Wastewater Plants in Jiangsu Province (China) and Their Potential Risks Water ecological risks heavy metals pollutant distribution sewage plants sludge |
| title | Distribution Characteristics of Typical Heavy Metals in Sludge from Wastewater Plants in Jiangsu Province (China) and Their Potential Risks |
| title_full | Distribution Characteristics of Typical Heavy Metals in Sludge from Wastewater Plants in Jiangsu Province (China) and Their Potential Risks |
| title_fullStr | Distribution Characteristics of Typical Heavy Metals in Sludge from Wastewater Plants in Jiangsu Province (China) and Their Potential Risks |
| title_full_unstemmed | Distribution Characteristics of Typical Heavy Metals in Sludge from Wastewater Plants in Jiangsu Province (China) and Their Potential Risks |
| title_short | Distribution Characteristics of Typical Heavy Metals in Sludge from Wastewater Plants in Jiangsu Province (China) and Their Potential Risks |
| title_sort | distribution characteristics of typical heavy metals in sludge from wastewater plants in jiangsu province china and their potential risks |
| topic | ecological risks heavy metals pollutant distribution sewage plants sludge |
| url | https://www.mdpi.com/2073-4441/15/2/313 |
| work_keys_str_mv | AT dandanxiao distributioncharacteristicsoftypicalheavymetalsinsludgefromwastewaterplantsinjiangsuprovincechinaandtheirpotentialrisks AT heli distributioncharacteristicsoftypicalheavymetalsinsludgefromwastewaterplantsinjiangsuprovincechinaandtheirpotentialrisks AT yizhuowang distributioncharacteristicsoftypicalheavymetalsinsludgefromwastewaterplantsinjiangsuprovincechinaandtheirpotentialrisks AT guixinwen distributioncharacteristicsoftypicalheavymetalsinsludgefromwastewaterplantsinjiangsuprovincechinaandtheirpotentialrisks AT chenchengwang distributioncharacteristicsoftypicalheavymetalsinsludgefromwastewaterplantsinjiangsuprovincechinaandtheirpotentialrisks |