Anaerobic co-digestion of mechanically biologically treated municipal waste with primary sewage sludge – A feasibility study

2008 ◽  
Vol 99 (9) ◽  
pp. 3354-3364 ◽  
Author(s):  
Ole Pahl ◽  
Anna Firth ◽  
Iain MacLeod ◽  
Jim Baird
Keyword(s):  
Sewage Sludge ◽  
Feasibility Study ◽  
Municipal Waste

scholarly journals Manganese Binding by Municipal Waste Composts Used as Potting Media

1991 ◽  
Vol 9 (2) ◽  
pp. 97-100 ◽  
Author(s):  
Timothy K. Broschat
Keyword(s):  
Sewage Sludge ◽  
Municipal Waste ◽  
Binding Potential ◽  
Mn Deficiency ◽  
Sludge Compost ◽  
Deficiency Symptoms ◽  
Potting Media ◽  
The Media ◽  
Mn Content ◽  
Syagrus Romanzoffiana

Abstract Queen palms (Syagrus romanzoffiana (Chamisso) Glassman) grown in several types of sewage sludge compost media developed severe Mn deficiency symptoms. Seventy of the symptoms was correlated with DTPA-extractable Mn levels in the media and with leaf Mn content, but not with total media Mn. Compost media tied up over 70% of Mn added to samples within one hour, versus 62% or less for a pine bark, sedge peat, and sand medium. Analysis of autoclaved media samples suggested that some of the Mn tie up in garbage and yard trash composts is caused by microorganisms, but microorganisms had little effect on the binding potential of sludge and manure composts.

Gas chromatographic analysis of polychlorinated biphenyls in compost samples from different origin

2019 ◽  
Vol 37 (5) ◽  
pp. 556-562 ◽  
Author(s):  
Karolina Barcauskaitė
Keyword(s):  
Sewage Sludge ◽  
Polychlorinated Biphenyls ◽  
Organic Pollutants ◽  
Food Waste ◽  
Persistent Organic Pollutants ◽  
Biological Treatment ◽  
Cattle Manure ◽  
Municipal Waste ◽  
Green Waste ◽  
Municipal Waste Compost

Depending on the origin, the compost produced may contain not only nutrients but also pollutants, such as heavy metals and persistent organic pollutants. It is very important to determine them in soil-improving substances, because persistent organic pollutants show environmental toxic, cancerogenic, mutagenic effects and do not decompose for a long time. The aim of this study was to determine seven polychlorinated biphenyls concentrations in different kinds of composts produced in Lithuania and to evaluate the appliance of these composts in agricultural land. First, before routine analysis was done a gas chromatography with electron-capture detector method was developed. In this study 145 samples of green waste, sewage sludge, cattle manure, food waste, mixed municipal waste, digestate and composts made from mixed municipal waste after mechanical–biological treatment were analysed. Obtained results show that 28% of investigated cattle manure composts (CMCs) and 10.5% of food waste composts (FWCs) were free from polychlorinated biphenyls. Other kinds of composts investigated in this study (green waste compost (GWC), sewage sludge compost (SSC), mixed municipal waste compost (MMWC), mixed municipal waste compost after mechanical biological treatment (MMWCABMT) and digestate (DIG)) were contaminated 100% with polychlorinated biphenyls. Despite the fact that polychlorinated biphenyls were forbidden 25 years ago, their concentration varied from 2.70 to 163.7 µg kg−1 in different kinds of composts produced in Lithuania. According to get an increasing average amount of Σ7 polychlorinated biphenyls, Lithuanian composts were distributed as follows CMC > GWC > DIG > FWC > SSC > MMWCABMT > MMWC.

scholarly journals Co-digestion of cultivated microalgae and sewage sludge from municipal waste water treatment

2014 ◽  
Vol 171 ◽  
pp. 203-210 ◽  
Author(s):  
Jesper Olsson ◽  
Xin Mei Feng ◽  
Johnny Ascue ◽  
Francesco G. Gentili ◽  
M.A. Shabiimam ◽  
...  
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Sewage Sludge ◽  
Waste Water Treatment ◽  
Municipal Waste

STUDY OF THE POSSIBILITY OF USING MICROWAVE RADIATION FOR THE TREATMENT OF LIQUID MUNICIPAL WASTE

2018 ◽  
Vol 8 (1) ◽  
pp. 44-49
Author(s):  
Viktor I. KICHIGIN ◽  
Marina V. ZEMLYANOVA ◽  
Elena A. VYALKOVA
Keyword(s):  
Heavy Metal ◽  
Sewage Sludge ◽  
Activated Sludge ◽  
Electromagnetic Radiation ◽  
Microwave Radiation ◽  
Wastewater Sludge ◽  
Municipal Waste ◽  
Capillary Suction ◽  
Metal Impurities ◽  
Fi Ltration

The article is devoted to the study of the infl uence of microwave electromagnetic radiation (UHF EMP) on the properties of sewage sludge. The possibility of using microwave radiation for their processing is shown. The results of experiments confi rming the positive eff ect of the process under study on the degree and speed of compaction of a mixture of precipitation and activated sludge, improvement of their moisture yield, an increase in the yield of heavy metal impurities in decanted water, a decrease in the specifi c resistance of fi ltration and capillary suction of the sediment, precipitation. A hypothesis is proposed for the eff ect of UHF EMP on wastewater sludge.

Comparison of changes in selected polycyclic aromatic hydrocarbons concentrations during the composting and anaerobic digestion processes of municipal waste and sewage sludge mixtures

2014 ◽  
Vol 70 (10) ◽  
pp. 1617-1624 ◽  
Author(s):  
Izabela Siebielska
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Anaerobic Digestion ◽  
Sewage Sludge ◽  
Aromatic Hydrocarbons ◽  
Degradation Kinetics ◽  
Municipal Waste ◽  
Gas Chromatography Mass Spectrometry ◽  
Organic Fraction ◽  
Important Conclusion ◽  
Polycyclic Aromatic

Changes in naphthalene (Naph), phenanthrene (Phe), pyrene (Pyr), benzo(a)pyrene (BaP) and benzo(ghi)perylene (BgP) concentrations in a mixture of sewage sludge and the organic fraction of municipal waste were determined during composting and anaerobic digestion. The processes were carried out on a laboratory scale. The selected polycyclic aromatic hydrocarbons (PAHs) were analyzed in the samples using gas chromatography-mass spectrometry. The rates at which the PAHs concentrations decreased were evaluated during composting and anaerobic digestion. The selected PAHs degradation kinetics were compared during these processes. The most important conclusion of this work is that composting is much more effective than anaerobic digestion in removing five PAHs from a mixture of sewage sludge and the organic fraction of municipal waste.

scholarly journals Evaluating the Effects of Municipal Waste and Wastewater on Absorption of Nickel and Cadmium of Helianthus Annuus Plant

2016 ◽  
Vol 64 (3) ◽  
pp. 741-749
Author(s):  
Amirhossein Ashouri ◽  
Bahareh Sadhezari
Keyword(s):  
Sewage Sludge ◽  
Helianthus Annuus ◽  
Municipal Waste ◽  
Organic Fertilizers ◽  
Municipal Sewage ◽  
Municipal Sewage Sludge ◽  
Control Group ◽  
Aquatic Environments ◽  
Municipal Waste Compost ◽  
Main Factor

The present study is an attempt to examine the effects of municipal waste and wastewater on absorption of nickel and cadmium of helianthus annuus plant. In order to determine cadmium and nickel in different organs of the plant in soil with organic fertilizers of municipal waste and municipal sewage sludge, we conducted a split plot study. The study was in form of randomized complete block from 2011 to 2015 under farm conditions. We considered the main factor in five levels of control, 10 and 20 tons of sewage sludge and municipal waste compost per hectare besides the minor factor of yearly treatment during four years. The results showed that using 20 tons of sewage sludge and waste per hectare increased absorbable soil nickel and cadmium up to approximately 220%. Also, the amount of cadmium and nickel in root was about 400% more than the control group. Bacteria found in soil contaminated to heavy metals showed remarkable resistance against higher concentration of these elements. Both bioaccumulation and biosorption techniques indicated high potential to refine aquatic environments. However, the bioaccumulation technique showed better efficiency in lower concentrations and the biosorption revealed better efficiency in higher concentrations of metals.

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