scholarly journals Risks of Heavy Metals Contamination of Soil-Pant System by Land Application of Sewage Sludge: A Review with Data from Brazil

10.5772/58384 ◽  
2014 ◽  
Author(s):  
Alysson Roberto Baizi e Silva ◽  
Fbio Camilotti VIII
Keyword(s):  
Heavy Metals ◽  
Sewage Sludge ◽  
Land Application ◽  
Heavy Metals Contamination

scholarly journals Effect of sewage sludge application on heavy metals contamination in soil and carrot

2020 ◽  
Vol 604 ◽  
pp. 012034
Author(s):  
N Schiptsova ◽  
G Larionov ◽  
O Vasilyev ◽  
N Fadeeva ◽  
M Terentyeva
Keyword(s):  
Heavy Metals ◽  
Sewage Sludge ◽  
Heavy Metals Contamination ◽  
Sludge Application

Effects of Land Application of Municipal Sewage Sludge on Growth, Physiology and Accumulation of Heavy Metals in Wheat (Triticum aestivum L.)

2014 ◽  
Vol 878 ◽  
pp. 647-656 ◽  
Author(s):  
Liang Dai ◽  
Biao Lin Peng ◽  
Bi Gui Wei ◽  
Gui Ma
Keyword(s):  
Heavy Metals ◽  
Sewage Sludge ◽  
Dry Weight ◽  
Land Application ◽  
Municipal Sewage ◽  
Municipal Sewage Sludge ◽  
Technical Solution ◽  
Good Growth ◽  
Growth Physiology ◽  
Sludge Application

The application of sewage sludge on agricultural soils is a promising technical solution. Pot experiments were performed to study the effect of sewage sludge application on growth, physiology and accumulation of heavy metals in three kinds of wheat. The experimental results showed soil pH decreased significantly with the increase of the application of sewage sludge. The contents of Cu, Zn and Pb in the mixed soil did not exceed the Environmental quality standards for soils in China for Grade II (GB-1518-1995).Wheat obtained good growth activities after the application of sewage sludge, however, high land application of sewage sludge (the ratio of sludge in the mixed soil of dry weight was 20% and 25%) inhibited seed emergence and root length. The content of total chlorophyll in wheat increased with the increase of sewage sludge application first and reached a maximum, and then decreased with a further increase of sewage sludge. Compared with the control, the a/b value in chlorophyll showed trace change. The content of proline in wheat increased with the increase of sewage sludge in low doses of sewage sludge (5%, 10% and 15%), while there was no significant increase in the content in high land application of sewage sludge. The physiological metabolism of wheat will exhibit abnormality as the stress of pollutants from sludge exceeded the tolerance of wheat. The content of three kinds of heavy metals in wheat grain increased obviously with sludge application increasing, indicating an increasing trend, and had the phenomenon of exceeded the safety qualification of non-environmental pollution food in china at high doses of sewage sludge. Taking account of the effects of sewage sludge application on growth,physiology and accumulation of heavy metals in wheat, the doses of sludge in the mixed soil of dry weight should be lower than 15%.

scholarly journals Characterization of an Industrial Sewage Sludge and Its Evaluation for Land Application

2018 ◽  
Vol 12 (5) ◽  
pp. 27-34
Author(s):  
Mohsen Mohammadi Galangash ◽  
◽  
Mostafa Mahdavianpour ◽  
Samira Ghafouri Safa ◽  
◽  
...  
Keyword(s):  
Heavy Metals ◽  
Organic Matter ◽  
Sewage Sludge ◽  
Organic Contaminants ◽  
Sewage Treatment ◽  
Land Application ◽  
Nutrient Contents ◽  
Microbial Contaminants ◽  
Industrial Sewage ◽  
Industrial Sewage Sludge

Background: Sewage treatment leads to the production of large amount of sludge, containing organic matter and nutrients and considering requirements for recycling could be used as fertilizer. The sludge may also contain various pollutants that pose serious harm to human health and the environment. This study aimed at characterizing the industrial sewage sludge and evaluating its capability as fertilizer with no or a minor pretreatment. Methods: The sludge’s organic matter and nutrient contents, heavy metals, organic and microbial contaminants were determined and compared to literature data and international guidelines. Results: The organic matter, nutrients, phosphorous, and exchangeable potassium contents of the sludge samples were significantly high as follows: 33.6 ± 2.85 %, 6.29 ± 0.16 %, 1.41± 0.01 % and 1.236 g/kg, respectively. The concentration of heavy metals was 94.3 ± 59.5 mg/kg. The concentration of heavy metals, organic contaminants, such as PCBs, BTEX, and PAHs, and microbial contents (coliforms & E. coli) were lower than those reported by other studies. Toluene concentration was high. Conclusions: All characteristics of the sludge samples, except for the toluene and microbial contaminations, were acceptable for its use as land fertilizer. Both toluene and microbial contaminants can be removed, using thermal conditioning as a pretreatment.

Effects of Sewage Sludge Application on Contents of Heavy Metals in the Soil and Growth of Maize

2013 ◽  
Vol 838-841 ◽  
pp. 2694-2700
Author(s):  
Liang Dai ◽  
Ya Mei Gao ◽  
Jun Ping Zhang
Keyword(s):  
Heavy Metals ◽  
Sewage Sludge ◽  
Root Length ◽  
Plant Root ◽  
Seedling Emergence ◽  
Land Application ◽  
Maize Root ◽  
Dose Effect ◽  
Good Growth ◽  
Sludge Application

Through pot experiments,the effects of various sludge loadings (0,40,80,120,200,280 t·ha-1) on growth of maize and sewage sludge application on contents of heavy metals in the soil were studied using sewage sludge from An-ning Plant of Wastewater Treatment of Lanzhou City. The results showed land application of sewage sludge increased significantly the contents of PbCuZn in the soil. The contents of PbCuZn in the soil did not exceed the standard of Environmental quality standards for soils for Grade II (GB-1518-1995) in china. Maize obtained good growth activities after land application of sewage sludge,maize height and biomass were increased significantly and were better than the control. Land application of sewage sludge inhibited maize seedling emergence and maize root length,showing the effects of dose-effect relationship with sludge application increasing. Maize root length was restrained significantly by heavy metals in the soil, the effects of heavy metals in the soil on plant root system should be considered with land application of sewage sludge. The optimal land application of sewage sludge is 80-120 t·ha-1.

Land application technique for the treatment and disposal of sewage sludge

2002 ◽  
Vol 46 (9) ◽  
pp. 303-308 ◽  
Author(s):  
S.M. Zain ◽  
H. Basri ◽  
F. Suja' ◽  
O. Jaafar
Keyword(s):  
Heavy Metals ◽  
Sewage Sludge ◽  
Cation Exchange ◽  
Cation Exchange Capacity ◽  
Chemical Properties ◽  
Potential Effect ◽  
Application Rate ◽  
Exchange Capacity ◽  
Land Application ◽  
Treated Soil

Some of the major concerns when applying sewage sludge to land include the potential effect on pH and cation exchange capacity; the mobility and the accumulation of heavy metals in sludge treated soil; the potential of applying too much nutrients and the problems associated with odors and insects. The main objective of this study is to identify the effects of sewage sludge application on the physical and chemical properties of sludge treated soil. Sewage sludge was applied to soil at various rates ranging from 0 L/m2 to 341 L/m2. In order to simulate the natural environment, the study was carried out at a pilot treatment site (5.2 m × 6.7 m) in an open area, covered with transparent roofing material to allow natural sunlight to pass through. Simulated rain was applied by means of a sprinkler system. Data obtained from sludge treated soil showed that the pH values decreased when the application rates were increased and the application period prolonged. The effect of sewage sludge on cation exchange capacity was not so clear; the values obtained for every application rate of sewage sludge did not indicate any consistent behaviour. The mobility of heavy metals in soils treated with sludge were described by observing the changes in the concentration of the heavy metals. The study showed that Cd has the highest mobility in sludge treated soil followed by Cu, Cr, Zn, Ni and Pb.

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