scholarly journals Temporal variability of sewage sludge heavy metal content from Greek wastewater treatment plants

2016 ◽  
Vol 23 (2) ◽  
pp. 271-283 ◽  
Author(s):  
Thomas Spanos ◽  
Antoaneta Ene ◽  
Chrysoula Styliani Patronidou ◽  
Christina Xatzixristou
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Wastewater Treatment ◽  
Sewage Sludge ◽  
Temporal Variability ◽  
Metal Content ◽  
Wastewater Treatment Plants ◽  
Chromium Species ◽  
Metal Concentrations ◽  
Metal Contents

AbstractThe aim of this study was to evaluate the temporal variations of selected heavy metals level in anaerobic fermented and dewatered sewage sludge. Sewage sludge samples were collected in different seasons and years from three municipal wastewater treatment plants (WWTPs) located in Northern Greece, in Kavala (Kavala and Palio localities) and Drama (Drama locality) Prefectures. An investigation of the potential of sludge utilization in agriculture was performed, based on the comparison of average total heavy metal concentrations and of chromium species (hexavalent, trivalent) concentrations with the allowed values according to the Council Directive 86/278/EEC and Greek national legislation (Joint Cabinet Decision 80568/4225/91) guidelines. In this regard, all the investigated heavy metals (Cd, Cr, Cu, Ni, Pb, Zn, Hg) and chromium species Cr(VI) and Cr(III) have average concentrations (dry matter weight) well below the legislated thresholds for soil application, as following: 2.12 mg kg−1Cd; 103.7 mg kg−1Cr; 136.4 mg kg−1Cu; < 0.2 mg kg−1Hg; 29.1 mg kg−1Ni; 62.0 mg kg−1Pb; 1253.2 mg kg−1Zn; 1.56 mg kg−1Cr(VI) and 115.7 mg kg−1Cr(III). Values of relative standard deviation (RSD) indicate a low or moderate temporal variability for domestic-related metals Zn (10.3-14.7%), Pb (27.9-44.5%) and Cu (33.5-34.2%), and high variability for the metals of mixed origin or predominantly resulted from commercial activities, such as Ni (42.4-50.7%), Cd (44.3-85.5%) and Cr (58.2-102.0%). For some elements the seasonal occurrence pattern is the same for Kavala and Palio sludge, as following: a) Cd and Cr: spring>summer>winter; b) Cu, Ni and Pb: winter>spring>summer. On average, in summer months (dry season) metal concentrations are lower than in spring and winter (wet seasons), with the exception of Zn. For Kavala and Palio the results demonstrate that the increased number of inhabitants (almost doubled) in summer time due to tourism does not influence the metal levels in sludge. Comparing the results obtained for similar spring-summer-winter sequences in 2007 and 2010/11 and for the spring season in 2007, 2008 and 2010, it can be noticed that, in general, the average heavy metal contents show an increasing tendency towards the last year. In all the measurement periods, the Palio sludge had the highest metal contents and Kavala sludge the lowest, leading to the conclusion that the WWTP operating process rather than population has a significant effect upon the heavy metal content of sludge. Cr(VI)/Cr(total) concentration ratios are higher for Kavala sludge in the majority of sampling campaigns, followed by Drama and Palio sludge. The metals which present moderate to strong positive correlation have common origin, which could be a domestic-commercial mixed source.

scholarly journals Pollution level and risk assessment of heavy metals in sewage sludge from eight wastewater treatment plants in Wuhu City, China

2020 ◽  
Vol 18 (2) ◽  
pp. e1103
Author(s):  
Hanwen Zhang ◽  
Yuee Huang ◽  
Shu Zhou ◽  
Liangchen Wei ◽  
Zhiyuan Guo ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Wastewater Treatment ◽  
Sewage Sludge ◽  
Correlation Analysis ◽  
Ecological Risk ◽  
Wastewater Treatment Plants ◽  
Pollution Index ◽  
Potential Ecological Risk ◽  
Potential Sources

Aim of study: To investigate the content, contamination levels and potential sources of five heavy metals (Hg, Pb, Cd, Cr, As) in sewage sludge from eight wastewater treatment plants (W1 to W8).Area of study: Wuhu, located in southeastern Anhui Province, southeastern China.Material and methods: The sewage sludge pollution assessment employed the single-factor pollution index, Nemerow’s synthetic pollution index, monomial potential ecological risk coefficient and potential ecological risk index. The potential sources among the five heavy metals were determined using the Pearson’s correlation analysis and principal component analysis (PCA).Main results: The mean concentrations of the heavy metals were 0.27 mg/kg (Hg), 70.78 mg/kg (Pb), 3.48 mg/kg (Cd), 143.65 mg/kg (Cr) and 22.17 mg/kg (As). W1, W5 and W6 sewage sludge samples showed the highest levels of heavy metal contamination, and cadmium had the highest contamination level in the study area. Pearson’s correlation analysis and PCA revealed that Pb and Cd mainly derived from traffic emissions and the manufacturing industry and that As and Cr originated from agricultural discharges.Research highlights: The pollution of cadmium in Wuhu should be controlled preferentially. The heavy metal pollution of W1, W5 and W6 sewage treatment plants is relatively high, they should be key prevention targets.

Study on Variation Trends of Heavy Metals Contents in Process of Sludge Energy Utilization

2012 ◽  
Vol 610-613 ◽  
pp. 198-202
Author(s):  
Ying Xie ◽  
Tao Zhang ◽  
Chong Li Xu ◽  
Yuan Feng Hui ◽  
Wen Jing Ou Yang
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Wastewater Treatment ◽  
Municipal Wastewater ◽  
Wastewater Treatment Plants ◽  
Municipal Wastewater Treatment ◽  
Digested Sludge ◽  
Metal Contents ◽  
The Mean ◽  
Municipal Wastewater Treatment Plants

Application of sludge-to-energy is an important direction for disposal of sludge, and it is necessary to provide the contents change of heavy metals in sludge. Through sampling in situ and analysis in laboratory, distributions of seven heavy metals in five kinds of sludge, which were come from wastewater treatment plant of Jilin Petrochemical Company of Petro China, were studied, and contents change of heavy metals in the course of sludge-to-energy were analyzed. The results were compared with the other sludge in the factory and municipal wastewater treatment plants and the national standard. The results showed that the heavy metal contents are different in the different sludge, and the mean is Fe>Cu>Zn>Mn>Pb >Cr>Cd, the total content distributions from high to low is incinerated sludge, chemical sludge, activated sludge, neutralization sludge, digested sludge. Contents of Cu and Zn exceeded the the mean of 44 municipal wastewater treatment plants and GB18918-2002. After biogas of digested sludge and energy of incinerated sludge were recovered, heavy metal contents exceeded in varying degrees, which were paid more attention for treatment and utilization.

scholarly journals The Assessment of Using the Sewage Sludge in Agriculture in Romania

2018 ◽  
Vol 55 (4) ◽  
pp. 700-703
Author(s):  
Carmelia Mariana Dragomir Balanica ◽  
Aurel Gabriel Simionescu ◽  
Iulian Gabriel Birsan ◽  
Cezar Ionut Bichescu ◽  
Cristian Muntenita
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Wastewater Treatment ◽  
Sewage Sludge ◽  
Urban Area ◽  
Metal Toxicity ◽  
Wastewater Treatment Plants ◽  
Urban Wastewater ◽  
Usage Analysis ◽  
Urban Wastewater Treatment

Sewage sludge resulted from urban wastewater treatment plants is generally accepted as a valuable source of nutrient and soil conditioner for agricultural usage. Analysis of amount of heavy metals in sewage sludge is essential previous to utilization of the sludge to agriculture considering the inevitable risk of heavy metal toxicity to soil, vegetation and humans. The present paper aims to analyse the characteristics of the sewage sludge resulted in an urban area for 5 years. Sewage sludge generated from five wastewater treatment plants in the South and South Est part of Romania were analysed.

PCDD/F, PAH and heavy metals in the sewage sludge from six wastewater treatment plants in Beijing, China

Chemosphere ◽  
2007 ◽  
Vol 66 (2) ◽  
pp. 353-361 ◽  
Author(s):  
Jiayin Dai ◽  
Muqi Xu ◽  
Jiping Chen ◽  
Xiangping Yang ◽  
Zhenshan Ke
Keyword(s):  
Heavy Metals ◽  
Wastewater Treatment ◽  
Sewage Sludge ◽  
Wastewater Treatment Plants ◽  
Beijing China

scholarly journals Use of Sewage Sludge in Agriculture

2011 ◽  
Vol 68 (2) ◽  
Author(s):  
Daniela CIUPEANU CĂLUGĂRU
Keyword(s):  
Waste Water ◽  
Heavy Metals ◽  
Wastewater Treatment ◽  
Sewage Sludge ◽  
Environmental Protection ◽  
Environmental Quality ◽  
Wastewater Treatment Plants ◽  
Biological Sludge ◽  
The Law ◽  
High Degree

For turning to a high degree of favorability of sludge from wastewater treatment plants, currently the reintroduction in the natural circuit of this waste is an urgent priority. Knowing precisely the composition of chemical and biological sludge from waste water in accordance with the law and the rules of their application, along with modern wastewater treatment appropriate technologies play a key role on environmental protection. Involvement by precise rules, the content of heavy metals in relation to the maximum permitted by law, translate in to particularly advantageous results in terms of environmental quality.

Element Content (Cu, Fe, Mn, Ni, Pb, and Zn) of the Ruderal Plant Verbascum olympicum Boiss. from East Mediterranean

2006 ◽  
Vol 61 (5-6) ◽  
pp. 357-362 ◽  
Author(s):  
Gürcan Güleryüz ◽  
Hülya Arslan ◽  
Belgin İzgi ◽  
Şeref Güçer
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Atomic Absorption ◽  
Metal Content ◽  
Element Content ◽  
East Mediterranean ◽  
Metal Contents ◽  
Accumulation Capacity ◽  
Highly Correlated ◽  
Ruderal Plant

In this study, heavy metal content (Cu, Fe, Mn, Ni, Pb, Zn) was determined in soils and different organs of Verbascum olympicum Boiss. This species is endemic to Uludağ and spreads on destroyed areas such as: roadsides, developed building areas, ski lift stations and sheep folds. Soils and different organs (roots, stems, leaves and flowers) of plant samples were analyzed using an atomic absorption spectrophotometer for determining the element content. Heavy metal contents in soils and different organs in this species were highly correlated (P < 0.05). However, the contribution of plant organs to the accumulation capacity varied according to the metal. These results suggest that this species may be useful as a bioindicator for heavy metals.

scholarly journals Biomass yields of shoots and roots of plants cultivated in soil amended by vermicomposts based on tannery sludge and content of heavy metals in plant tissues

2011 ◽  
Vol 49 (No. 9) ◽  
pp. 402-409 ◽  
Author(s):  
K. Gondek ◽  
B. Filipek-Mazur
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Sewage Sludge ◽  
Farmyard Manure ◽  
Cultivated Plants ◽  
Tannery Sludge ◽  
Mineral Fertilization ◽  
Metal Concentrations ◽  
Heavy Metal Concentrations ◽  
Manure Treatment

Sewage sludge application in agriculture is the simplest method of its management. Its content of organic and inorganic toxic components is a&nbsp;barrier to such management. Particular attention should be paid to the content of heavy metals whose presence in sewage sludge and later in soil poses hazard for plants, animals and people. The investigations aimed to determine the effect of vermicomposts obtained from tannery sludge on development of the root system and biomass of shoots as well as heavy metal concentrations in these organs. In the first year after the vermicomposts application their effect on the maize biomass increase was equal to the farmyard manure treatment but significantly worse than the mineral fertilization. The consecutive fertilizer effect of vermicomposts of tannery sludge ted on the increase in biomass of the shoots and roots of winter rape, sunflower and oats was comparable with the farmyard manure effect but notably better than the mineral fertilization. Heavy metal concentrations in individual plants were diversified; in the plants from vermicompost treatment they were as a&nbsp;rule lower than in the plants from mineral or farmyard manure treatment. Absorbed heavy metals accumulated primarily in the root systems, whereas the extremely high chromium content in vermicomposts did not cause its excessive accumulation in the cultivated plants.

scholarly journals Heavy metal contents of Hg, Cd, Pb, and Cu in splendid ponyfish Eubleekeria splendens (Cuvier, 1829) meat in Banten Bay, Indonesia

2021 ◽  
Vol 322 ◽  
pp. 01022
Author(s):  
Lisbet Sagala ◽  
Sulistiono ◽  
Djamar T.F.L. Batu
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Atomic Absorption ◽  
Metal Content ◽  
Accumulation Rate ◽  
Aquatic Organisms ◽  
The Body ◽  
Heavy Metal Content ◽  
Metal Contents ◽  
Observation Period

Banten Bay is an area affected by industrial, shipping, and domestic activities. These have the potential to produce wastes in the form of heavy metals and can accumulate in the body of aquatic organisms such as the splendid ponyfish Eubleekeria splendens (Cuvier, 1829). This study aimed to determine the accumulation of heavy metals Hg, Cd, Pb, and Cu in splendid ponyfish Eubleekeria splendens (Cuvier, 1829) meat in Banten Bay, Serang Regency, Banten Province. Sampling was carried out for three months, from August to October 2020. Analysis of heavy metal content was carried out using AAS (Atomic Absorption Spectrophotometer). The content of heavy metals Hg, Cd, Pb, and Cu in splendid ponyfish meat were <0.030 mg/kg, <0.001 mg/kg, <0.005 mg/kg, and 0.224-0.437 mg/kg. Bioaccumulation of heavy metals Hg, Cd, Pb, and Cu in small and big splendid ponyfish meat has a low accumulation rate. During the observation period, the heavy metal content of Hg, Cd, Pb, and Cu in small and big splendid ponyfish meat was not significantly different.

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