scholarly journals Sugarcane grown in an oxisol amended with sewage sludge and vinasse: nitrogen contents in soil and plant

2008 ◽  
Vol 65 (4) ◽  
pp. 408-414 ◽  
Author(s):  
Ademir Franco ◽  
Marcos Omir Marques ◽  
Wanderley José de Melo
Keyword(s):  
Sewage Sludge ◽  
Waste Water Treatment ◽  
Control Treatment ◽  
Mineral Fertilization ◽  
Soil System ◽  
Sugarcane Cultivar ◽  
Plant Soil ◽  
Water Treatment Plants ◽  
Residual N ◽  
Nitrogen Contents

Sewage sludge is a residue from waste water treatment plants and vinasse is a main effluent from alcohol distilleries. The main differences between them are observed in the nitrogen (N) and potassium (K) contents. Sewage sludge is poor in K, and the vinasse in N. This research was carried out to evaluate sewage sludge and vinasse effects on the nitrogen contents of the plant-soil system and the effects of their application on planted-cane and 1st. ratoon-cane under field conditions, on a Typic Haplustox, in Pontal, State of São Paulo, Brazil, using the sugarcane cultivar SP81-3250. A randomized blocks experimental design was used with 13 treatments and three replications. The results were organized in a 3 × 2 × 2 factorial scheme (three residue forms, two application modes and two rates of N or K) and a control treatment (mineral fertilization). Sewage sludge provided the highest N plant contents and the highest residual N soil contents. Sewage sludge and vinasse can replace mineral fertilization for both planted-cane and 1st. ratoon-cane.

scholarly journals MICRONUTRIENT CONTENTS IN THE PROFILE OF A RECOVERED SOIL WITH SEWAGE SLUDGE AND NATIVE SPECIES OF ATLANTIC FOREST

FLORESTA ◽  
2019 ◽  
Vol 49 (3) ◽  
pp. 485
Author(s):  
Lívia Mara Lima Goulart ◽  
Marianne Fidalgo de Faria ◽  
Grasiela Spada ◽  
Thiago Tássio de Souza Silva ◽  
Iraê Amaral Guerrini
Keyword(s):  
Sewage Sludge ◽  
Atlantic Forest ◽  
Soil Profile ◽  
Native Species ◽  
Control Treatment ◽  
Mineral Fertilization ◽  
Promising Alternative ◽  
Final Destination ◽  
Potassium Supplementation

The use of sewage sludge in agriculture and recovery of degraded areas has been shown as a promising alternative for its final destination. Studies on micronutrient levels after sludge application are necessary to avoid soil contamination at toxic levels. The objective of this work was to verify the micronutrient contents in the soil profile and pH, up to one-meter-deep, nine years after the application of sewage sludge and planting of native species of the Atlantic Forest. The experiment was implemented in a degraded Quartzeneic Neosol and conducted in randomized blocks with four replicates and eight treatments, consisting of six doses of sewage sludge (0, 2.5, 5, 10, 15 and 20 Mg ha-1, with supplementation of potassium due to low concentration in the residue), besides the control treatment, mineral fertilization and only potassium supplementation. After nine years, the contents of all micronutrients evaluated presented a significant response to the application of the treatments, and the application of sewage sludge provided an increase in their contents. Soil pH remained stable at sites receiving mineral fertilization and potassium supplementation. Only manganese and zinc showed mobility in the soil profile. The application of sewage sludge in degraded soil increases the micronutrient content and decreases its movement in the soil profile, and the application of the maximum dose of the residue does not provide toxic levels of these elements in the soil in the long term.

Characterization of Free and Bound PBDEs in Sewage Sludge from Waste Water Treatment Plants (WWTPs) of Shanghai

2013 ◽  
Vol 864-867 ◽  
pp. 1993-1996
Author(s):  
Li Zao Liu ◽  
Yue Li ◽  
Jing Yang
Keyword(s):  
Waste Water ◽  
Sewage Sludge ◽  
Wastewater Treatment Plants ◽  
Waste Water Treatment ◽  
Dry Weight ◽  
Molecular Weights ◽  
Water Treatment Plants ◽  
Farmland Soils ◽  
Sludge Application

In this study, sewage sludge samples were collected from 25 wastewater treatment plants (WWTPs) in Shanghai, and free and bound PBDEs were extracted in different ways. The concentrations of free and bound PBDEs were in the range of 111.69 to 13119.59 ng/g dry weight (dw) and 4.30 to 60.17 ng/g dw, respectively. BDE209 were the dominate congener and the concentrations of free and bound BDE209 ranged from 89.64 to 12424.84 ng/g dw and 0.85 to 44.00 ng/g dw, respectively. The concentrations of bound PBDEs were quite stable, indicating bound PBDEs werent high related with the input of total PBDEs. The fractions of bound PBDE congeners increased with the numbers of Br atoms, which suggested that PBDE congeners with low molecular weights were more prone to desorb from micro-pores of organic matters in sewage sludge. The fractions of bound PBDEs in total PBDEs were in the range of 0.16 to 22.73%, suggesting bound PBDEs played an important role in farmland soils after sludge application.

scholarly journals Sewage sludge as a biomass energy source

2013 ◽  
Vol 61 (1) ◽  
pp. 85-91 ◽  
Author(s):  
Pavel Kolat ◽  
Zdeněk Kadlec
Keyword(s):  
Waste Water ◽  
Energy Source ◽  
Water Treatment ◽  
Sewage Sludge ◽  
Waste Water Treatment ◽  
Biomass Energy ◽  
Dry Matter Content ◽  
Management Options ◽  
Water Treatment Plants ◽  
Waste Water Treatment Plants

The major part of the dry matter content of sewage sludge consists of nontoxic organic compounds, in general a combination of primary sludge and secondary microbiological sludge. The sludge also contains a substantive amount of inorganic material and a small amount of toxic components. There are many sludge-management options in which production of energy is one of the key treatment steps. The most important options are anaerobic digestion, co-digestion, incineration in combination with energy recovery and co-incineration in coal-fired power plants. The goal of our applied research is to verify, if the sludge from waste water treatment plants may be used as a biomass energy source in respect of the EU legislation, which would comply with emission limits or the proposal of energy process optimizing the preparation of coal/sludge mixture for combustion in the existing fluid bed boilers in the Czech Republic. The paper discusses the questions of thermal usage of mechanically drained stabilized sewage sludge from the waste water treatment plants in the boiler with circulated fluid layer. The paper describes methods of thermal analysis of coal, sewage sludge and its mixtures, mud transport to the circulating fluidised bed boiler, effects on efficiency, operational reliability of the combustion equipment, emissions and solid combustion residues.

scholarly journals Applying Sewage Sludge toEucalyptus grandisPlantations: Effects on Biomass Production and Nutrient Cycling through Litterfall

2011 ◽  
Vol 2011 ◽  
pp. 1-11 ◽  
Author(s):  
Paulo Henrique Müller da Silva ◽  
Fabio Poggiani ◽  
Jean Paul Laclau
Keyword(s):  
Sewage Sludge ◽  
Nutrient Cycling ◽  
Biomass Production ◽  
Block Design ◽  
Mineral Fertilizer ◽  
Tropical Soils ◽  
Control Treatment ◽  
Mineral Fertilizers ◽  
Litter Production ◽  
Mineral Fertilization

In most Brazilian cities sewage sludge is dumped into sanitary landfills, even though its use in forest plantations as a fertilizer and soil conditioner might be an interesting option. Sewage sludge applications might reduce the amounts of mineral fertilizers needed to sustain the productivity on infertile tropical soils. However, sewage sludge must be applied with care to crops to avoid soil and water pollution. The aim of our study was to assess the effects of dry and wet sewage sludges on the growth and nutrient cycling ofEucalyptus grandisplantations established on the most common soil type for Brazilian eucalypt plantations. Biomass production and nutrient cycling were studied over a 36-month period in a complete randomized block design. Four experimental treatments were compared: wet sewage sludge, dry sludge, mineral fertilizer, and no fertilizer applications. The two types of sludges as well as mineral fertilizer increased significantly the biomass ofEucalyptustrees. Wood biomass productions 36 months after planting were similar in the sewage sludge and mineral fertilization treatments (about 80 tons ha−1) and 86% higher than in the control treatment. Sewage sludge application also affected positively leaf litter production and significantly increased nutrient transfer among the components of the ecosystem.

scholarly journals PCB congeners occurrence in sewage sludge from municipal wastewater treatment plants in Romania

2019 ◽  
pp. 310-317
Author(s):  
Alina Tatarus ◽  
Diana Puiu ◽  
Roxana Scutariu ◽  
Marius Simion ◽  
Marcela Antoaneta Niculescu ◽  
...  
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Sewage Sludge ◽  
Municipal Wastewater ◽  
Waste Water Treatment ◽  
Chemical Properties ◽  
Municipal Wastewater Treatment ◽  
Pcb Congeners ◽  
Water Treatment Plants ◽  
Waste Water Treatment Plants

Sewage sludges originating from waste water treatment plants (WWTP) act as a sink for various contaminants including polychlorinated biphenyls (PCBs). The fate of organochlorine compounds in sewage sludge is shaped by their physical-chemical properties and by environmental conditions. The high persistence of polychlorobiphenyls (PCBs) in sewage sludge is given by an extremely reduced degradation rate which varies from months to years (the half-life of PCB 28 is 10.9 years, and PCB 52, 11.2 years). Due to their increased hydrophobicity, these carcinogenic compounds can be easily uptake by plants and transferred to the food chain. The present study investigated the occurrence of these seven PCB congeners in sewage sludge sampled from municipal waste water treatment plants from different geographical areas in Romania for a two-year period (2018 and 2019). For the analyzed PCB congeners a database was created concerning their occurrence levels in sewage sludge from these WWTPs. A total number of 62 sewage sludge samples were collected from different WWTPs between 2018-2019 and analyzed for PCB congener content using a validated GC-ECD method according to SR EN 16167/2013. In all the samples that were analyzed in this study the sum of PCB congeners was situated below the maximum allowable concentration (MAC = 0.8 mg/kg d.w.) stated by the Order 708/2004.

scholarly journals Impacts of Using Mineral Fertilization Combined with Sewage Sludge in the Amendment of Luvisol on Oat Crop I. Influence on Yield and Mineral Nutrition

2020 ◽  
Vol 71 (4) ◽  
pp. 119-127
Author(s):  
Leonard Ilie ◽  
Mircea Mihalache ◽  
Roxana Maria Madjar ◽  
Catalina Calin ◽  
Gina Vasile Scaeteanu
Keyword(s):  
Sewage Sludge ◽  
Avena Sativa ◽  
Normal Values ◽  
Potassium Concentration ◽  
Equivalent Dose ◽  
Mineral Fertilizers ◽  
Dose Equivalent ◽  
Mineral Fertilization ◽  
Yield Increase ◽  
Nitrogen Contents

The present paper illustrates the results obtained on oat (Avena sativa L.), Somesan variety, concerning growth, grains and straw yields and also of macroelements accumulation (N, P, K, Ca, Mg) when various doses of sewage sludge were applied associated or not with mineral fertilization. Sewage sludge application produced significant increase of plant height starting with equivalent dose of 100 kg N/ha, meanwhile the highest height was observed in the case of plants fertilized with doses equivalent with 300 and 400 kg N/ha. With the increase of sewage sludge dose it has been observed the straw yield increase, this being statistically assured starting with sewage sludge equivalent dose of 100 kg N/ha. Sewage sludge fertilization, accompanied or not by mineral fertilizers, evidenced that nitrogen contents in oat grains increases with applied sewage dose, being significant from an equivalent dose of 200 kg N/ha. Low sewage doses equivalent with 200-300 kg K/ha evidenced for potassium concentration in oat grains a significant decrease in comparison with untreated variant, meanwhile mineral fertilization generated a significant increase of potassium levels in oat grains. Calcium contents in oat grains present a significant increase after sewage sludge fertilization and at a dose equivalent with 600 kg N/ha, the calcium levels (0.24%) increased 3 times in comparison with untreated variant (0.08%). Sewage sludge fertilization, associated or not with mineral fertilizers, did not produced significant changes of magnesium levels in oat grains, found concentrations being considered as normal values.

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