scholarly journals Fertilizer effect of composted sewage sludge and cattle manure on Pelargonium growth

2020 ◽  
Vol 10 (4) ◽  
pp. 1019-1025
Author(s):  
Nesrine Dridi ◽  
Lilia Romdhane ◽  
Renata Ferreira ◽  
Noomene Sleimi
Keyword(s):  
Sewage Sludge ◽  
Wastewater Treatment Plants ◽  
Cattle Manure ◽  
Flower Buds ◽  
Plant Cultivation ◽  
Biotechnological Approach ◽  
Dewatered Sewage Sludge ◽  
Sanitation Systems ◽  
Fertilizer Effect

Abstract Sewage sludge is considered as a main product obtained from urban liquid effluents that are discharged into sanitation systems of wastewater treatment plants. The aim of this work was to reuse it as compost, after the dehydration process, to replace the amendment applied in agriculture and also to reduce the environmental pollution caused by solid wastes. To justify our biotechnological approach, nutrient characterization of the composted dewatered sewage sludge was carried out and compared to cattle manure. The contents of N, P, K, and the organic matter are 3.67, 5.64, 6.60 g·kg-1 dry matter (DM), and 70%, respectively, in compost and 3.1, 1.6, 3.0 g·kg−1 DM, and 55%, respectively, in manure. Fertilization tests with composted dewatered sewage sludge and cattle manure were performed on Pelargonium inquinans. Monitoring the length of the first internodes showed an improvement of 4.2 mm in the length in compost plants with a development of 22.8 buds and 8.2 flower buds (19.4 buds and 4.4 flower buds developed in manure plants). It appears that the intake of composted dewatered sewage sludge ensures better growth for the studied plant due to its richness in nutrients, which confirms the beneficial effect of composting sewage sludge on plant cultivation.

Characterization of Sewage Sludge of Wastewater Treatment Plants in Alexandria

2003 ◽  
Vol 33 (3) ◽  
pp. 529-542
Author(s):  
Olfat El-Sebaie ◽  
Ahmed Hussein ◽  
Mohamed Ramadan ◽  
Magda Abd El-Atty ◽  
Helaly Helaly
Keyword(s):  
Wastewater Treatment ◽  
Sewage Sludge ◽  
Wastewater Treatment Plants

scholarly journals Preparation and characterization of activated carbon from sewage sludge: carbonization step

2004 ◽  
Vol 49 (1) ◽  
pp. 139-146 ◽  
Author(s):  
S. Rio ◽  
C. Faur-Brasquet ◽  
L. Le Coq ◽  
D. Lecomte ◽  
P. Le Cloirec
Keyword(s):  
Wastewater Treatment ◽  
Activated Carbon ◽  
Sewage Sludge ◽  
Thermal Treatment ◽  
Wastewater Treatment Plants ◽  
Carbonization Temperature ◽  
Carbon Production ◽  
By Products ◽  
Characterization Of Activated Carbon

Sewage sludges produced from wastewater treatment plants continue to create environmental problems in terms of volume and method of valorization. Thermal treatment of sewage sludge is considered as an attractive method in reducing sludge volume which at the same time produces reusable by-products. This paper deals with the first step of activated carbon production from sewage sludge, the carbonization step. Experiments are carried out on viscous liquid sludge and limed sludge by varying carbonization temperature and heating rate. The results show that carbonized residue properties are interesting for activated carbon production.

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 Chemical and physical properties of organic residues

2010 ◽  
Vol 34 (5) ◽  
pp. 1742-1752 ◽  
Author(s):  
Fábio Satoshi Higashikawa ◽  
Carlos Alberto Silva ◽  
Wagner Bettiol
Keyword(s):  
Sewage Sludge ◽  
Physical Properties ◽  
Cattle Manure ◽  
Chicken Manure ◽  
Organic Residue ◽  
Organic Residues ◽  
Coconut Fiber ◽  
Coffee Husk ◽  
Total Concentrations

Due to human activity, large amounts of organic residue are generated daily. Therefore, an adequate use in agricultural activities requires the characterization of the main properties. The chemical and physical characterization is important when planning the use and management of organic residue. In this study, chemical and physical properties of charcoal, coffee husk, pine-bark, cattle manure, chicken manure, coconut fiber, sewage sludge, peat, and vermiculite were determined. The following properties were analyzed: N-NH4+, N-N0(3)-, and total concentrations of N, P, S, K, Ca, Mg, Mn, Zn, Cu, and B, as well as pH, Electrical Conductivity (EC) and bulk density. Coffee husk, sewage sludge, chicken manure and cattle manure were generally richer in nutrients. The EC values of these residues were also the highest (0.08 - 40.6 dS m-1). Peat and sewage sludge had the highest bulky density. Sodium contents varied from 0 to 4.75 g kg-1, with the highest levels in chicken manure, cattle manure and sewage sludge. Great care must be taken when establishing proportions of organic residues in the production of substrates with coffee husk, cattle or chicken manure or sewage sludge in the calculation of the applied fertilizer quantity in crop fertilization programs.

Occurrence of pharmaceutical active compounds in sewage sludge from two urban wastewater treatment plants and their potential behaviour in agricultural soils

2021 ◽  
Author(s):  
Sofia Silva ◽  
João Rodrigues ◽  
Rosário Coelho ◽  
António Martins ◽  
Eugénia Cardoso ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Sewage Sludge ◽  
Crop Yields ◽  
Agricultural Soils ◽  
Wastewater Treatment Plants ◽  
Urban Wastewater ◽  
Active Compounds ◽  
Intensive Farming ◽  
Urban Wastewater Treatment

Sewage sludge/biosolids are widely used in intensive farming to maintain fertility and enhance crop yields. Therefore, characterization of these matrices is necessary to ensure their safe use, especially regarding the...

scholarly journals Agro-ecological Characterization of Vermicomposted Sewage Sludge from Municipal and Poultry Enterprise Wastewater Treatment Plants

2021 ◽  
Vol 50 (8) ◽  
pp. 2167-2178
Author(s):  
Diyana Dermendzhieva ◽  
Toncho Dinev ◽  
Gergana Kostadinova ◽  
Georgi Petkov ◽  
Georgi Beev
Keyword(s):  
Wastewater Treatment ◽  
Sewage Sludge ◽  
Wastewater Treatment Plants ◽  
Poultry Meat ◽  
Plate Count ◽  
Lumbricus Rubellus ◽  
Microbiological Analysis ◽  
Salmonella Spp ◽  
E Coli

The purpose of this study was to make an agro-ecological characterization of vermicompost (VC) produced from sewage sludge (SS). As a substrate, SS from municipal and poultry meat processing enterprise wastewater treatment plants (MTP and PTP, respectively) was utilized. The substrates were vermicomposted by Red Californian earthworm (Lumbricus rubellus) for 120 days. For VC quality assessment, 19 physicochemical and 6 microbiological parameters were used. The evaluation of physicochemical parameters was done according to ISO standard methods and microbiological analysis-by plating 1 mL of sample dilutions on selective, chromogenic culture medium sheets. It was found that the vermicompost from MTP (VC-M) had higher levels of EC, mineral elements (N, P and K compounds in forms available to plants), heavy metals (Mn, Cu, Zn, Cr, Ni, Pb, Cd) and coliforms, and lower levels of pH, TOC, C/N ratio, Fe, total plate count (TPC), Enterobacteriaceae and Salmonella spp. counts compared to VC from PTP (VC-P). During the vermicomposting process, the substrates from both wastewater treatment plants (TPs) showed similar trends towards decrease in pH, TOC, N-NH4+, C/N ratio, TPC, coliforms, E. coli, Enterobacteriaceae and Salmonella spp. counts, whereas the opposite trends were established for EC, TKN, N-NO3-, TP, P2O5, TK, and K2O values. The vermicomposting had a negligible effect on heavy metal concentrations. In the final substrates E. coli were not detected, while the bacterial spore forms (Clostridium perfringens) were not eliminated. The final substrates cannot be used as fertilizers or soil amendments because of the presence of Salmonella spp. and C. perfringens over the permissible limits according to EU and Bulgarian regulations.

Hydrothermal Treatment Technology of Municipal Sewage Sludge

2014 ◽  
Vol 908 ◽  
pp. 457-460 ◽  
Author(s):  
Li Li Qian ◽  
Shu Zhong Wang ◽  
Xing Ying Tang
Keyword(s):  
Sewage Sludge ◽  
Moisture Content ◽  
Hydrothermal Treatment ◽  
Wastewater Treatment Plants ◽  
Municipal Sewage ◽  
Municipal Sewage Sludge ◽  
Treatment Technology ◽  
Drying Technology ◽  
Dewatered Sewage Sludge ◽  
Treatment And Disposal

In China, over 28 million tons of dewatered sewage sludge, with 80 wt% moisture content, was generated from wastewater treatment plants in 2011. High moisture content is the bottleneck of sludge treatment and disposal. Thermal drying technology can significantly reduce the moisture content of sludge but its cost is too high. Hydrothermal treatment technology based on cell-break principle can efficiently and economically reduce the moisture content of sludge. This paper will introduce the specific process, features, treatment effect of this technology and propose an economic evaluation. The results show that hydrothermal treatment technology is a reasonable and economical method for treating sewage sludge in cities.

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