municipal sewage sludge Articles
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Sustainable reuse potential of municipal sewage sludge in south–east Australia
With the aim of reusing municipal sewage sludge, this paper presents the chemical and organic properties of sludge from a major sewage treatment plant in south–eastern Australia. The results show that the concentrations of all OCPs and majority of PAHs were below or close to laboratory detection limits. Concentrations of heavy metals in sludge samples were compared with typical sludge testing ...
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Review on municipal sewage sludge management in Turkey and Europe
The main purpose of this paper is to point out the development of the sewage sludge quantity in Turkey and in Europe by reviewing different studies to detect trends, which are characterised by legal framework and different disposal routes. Additionally, it should be elaborated if an increase in the amount of sewage sludge has to be expected and which reasons are indicated. Because of the ...
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Management of sewage sludge and ash containing radioactive materials
Approximately 50% of the seven to eight million metric tonnes of municipal sewage sludge produced annually in the US is reused. Beneficial uses of sewage sludge include agricultural land application, land reclamation, forestry, and various commercial applications. Excessive levels of contaminants, however, can limit the potential usefulness of land-applied sewage sludge. A recently completed ...
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The influence of temperature and SRT on high-solid digestion of municipal sewage sludge
The influence of temperature and solids retention time (SRT) on high-solid digestion of municipal sewage sludge was investigated in laboratory-scale reactors. Digestion with high-solid concentration reduces the required digestion volume and is advantageous for urban areas. The experimental conditions comprised total suspended solids (TSS) in digested sludge between 4.0 and 4.6%, temperatures ...
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Characteristics and adsorption study of the activated carbon derived from municipal sewage sludge
Sewage sludge-based activated carbon is proved to be an efficient and low-cost adsorbent in treatment of various industrial wastewaters. The produced carbon had a well-developed pore structure and relatively low Brunauer-Emmett-Teller (BET) surface area. Adsorptive capacity of typical pollutants, i.e. copper Cu(II) and methylene blue (MB) on the carbon was studied. Adsorptions were affected ...
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Pyrolysis properties of municipal sewage sludge with ZnCl2 activation under the N2 atmosphere
The municipal sewage sludge with ZnCl2 activation was pyrolysed to obtain useful porous adsorbents. The thermogravimetric analysis and FTIR methods were used to work out the properties of dried sewage sludge with ZnCl2 activation from the Changsha secondary wastewater-treatment plant. The experimental results showed that three stages of weight loss were observed under the heating rates of ...
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An interlaboratory comparison study for the determination of dialkyl phthalate esters in environmental and biological samples
A series of interlaboratory comparison exercises were conducted to assess the accuracy of dialkyl phthalate ester (DPE) concentration measurements in environmental and biological samples. Five laboratories participated in analyses to determine DPE concentrations in standard test solutions; marine sediments; three certified reference materials (CRMs), including CARP‐2 (fish muscle) and BCR‐07 ...
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Municipal sludge characteristic changes under different aerating condition in a deep-shaft aeration system
A pilot-scale municipal sewage sludge deep-shaft aeration system was implemented in Lanzhou, Gansu Province of China. The reactor depth was 60 m with a diameter of 1.0 m and the sludge to be treated came from a wastewater plant in Lanzhou. In order to obtain the optimum operation conditions, analysis was conducted on the transformations of the volatile suspended solids (VSS), temperature, pH, ...
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Full-scale performance of selected starch-based biodegradable polymers in sludge dewatering and recommendation for applications
Agricultural reuse of dewatered sludge is a valid route for sludge valorization for small and mid-size wastewater treatment plants (WWTPs) due to the direct utilization of nutrients. A more stringent of German fertilizer ordinance requires the degradation of 20% of the synthetic additives like polymeric substance within two years, which came into force on 1 January 2017. This study assessed ...
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Pharmaceuticals in processing of municipal sewage sludge studied by grab and passive sampling
Concentrations of pharmaceuticals, consisting of four anti-inflammatory and one antiepileptic drug, were studied in the aqueous and solid phase of municipal sewage sludge, collected from a wastewater treatment plant (WWTP) in central Finland. The samples included untreated municipal sludge from the biological wastewater treatment, digested sludge and sludge before and after composting. First, ...
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Bio-plastic (poly-hydroxy-alkanoate) production from municipal sewage sludge in the Netherlands: a technology push or a demand driven process?
Valorisation of components from municipal ‘waste’ water and sewage sludge gets more and more attention in order to come to a circular economy by developing an efficient ‘waste’ to value concept. On behalf of the transition team ‘Grondstoffenfabriek’ (‘Resource factory’) a preliminary research was performed for all the Dutch water boards to assess the technical and economical feasibility of ...
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Towards a complete recycling of phosphorus in wastewater treatment – options in Germany
Global reserves of mineral phosphorus are finite and the recycling of phosphorus from wastewater, a significant sink for phosphorus, can contribute to a more sustainable use. In Germany, Switzerland, and the Netherlands, an increasing percentage of municipal sewage sludge is incinerated and the contained phosphorus is lost. This paper reviews current technologies and shows that a complete ...
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Environmental and economic assessment of municipal sewage sludge management – a case study in Beijing, China
A case study was conducted in Beijing to identify municipal sewage sludge (SS) management systems appropriate for a sound material-cycle society. The environmental and economic impacts of four realistic SS-handling scenarios were investigated: stabilization by thermal drying, increased inclusion of SS in cement manufacture, and using either dried or carbonized SS as substitute fuel for ...
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Concentrations of gaseous trace elements such as mercury in the ambient air of the Netherlands
ABSTRACT Around the world, there is increasing concern about mercury in the environment. Sources of mercury emissions to the air include municipal waste incineration plants, coal-fired power plants and municipal sewage sludge disposal. The emission of mercury from coal-fired power plants in the Netherlands is well documented. However, to assess the environmental consequences of the emissions of ...
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Effects of repeated application of municipal sewage sludge on soil fertility, cotton yield, and nitrate leaching
The effects of sludge application on soil properties and cotton (Gossypium hirsutum L.) response were investigated in an Inseptisol in central Greece. Digested sludge was incorporated in the 0 to 15 cm soil depth at rates of 10, 30, and 50 Mg ha–1, and repeated for four consecutive years. Sludge treatments were compared to an inorganic fertilizer application and an untreated control in a ...
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Microbial community structure of a simultaneous nitrogen and phosphorus removal reactor following treatment in a UASB-DHS system
The anaerobic–anoxic sequence batch reactor (A2SBR) was applied to achieve nitrogen and phosphorus removal in an energy-saving sewage treatment system involving an up-flow anaerobic sludge blanket combined with a down-flow hanging sponge reactor to treat municipal sewage. After sludge acclimation, the A2SBR showed satisfactory denitrification and phosphorus removal performance with total ...
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New solid waste definition proposed
When the Boiler MACT rule was vacated in 2007, one key element in the court challenge was that many non-fossil fuel materials burned in industrial boilers should be classified as solid wastes and regulated accordingly. Along with the recently proposed Boiler MACT and rules for commercial/industrial/solid waste incinerators (CISWI), EPA proposed criteria to determine whether non-hazardous ...
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A critical review of experimental and predicted methane generation from anaerobic codigestion
Anaerobic digestion is increasingly being considered as a treatment option for an extensive range of waste biomass, due to the potential for energy recovery, in the form of methane production, and lower sludge volumes relative to aerobic treatment processes. Furthermore, when two substrates are codigested (i.e. digested together), added benefits are foreseeable, such as increased methane ...
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Efficiency of RO/NF membranes at the removal of veterinary antibiotics
The production of pharmaceuticals has increased rapidly during the last several decades as they have been used for the health of both humans and animals. Routes of environmental exposure include the release of treated wastewater, the land disposal of livestock manures and municipal biosolids (i.e. sewage sludge), as well as the use of medicated aquaculture feed. This study deals with application ...
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Development of a novel epigeic-anecic-based polyculture vermireactor for efficient treatment of municipal sewage water sludge
The potential of vermireactors, based on polyculture and monoculture system, was evaluated by using substrate consisted of domestic sewage sludge mixed with sugarcane trash, under laboratory conditions. Polyculture reactor was designed by using an epigeic (Eisenia fetida) and an anecic (Lampito mauritii) species of earthworm, while monoculture reactor had E. fetida only. Comparatively the end ...
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