waste digestion Articles
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Reasonable waste digestion plants
During the last years it became quite clear that in the area of utilisation of organic waste the anaerobic digestion has developed a leading position. This is not only based on its well known advantages:- abhigh rate degradation of organics- abcontained process- ablow emissions- abhigh yield of CO2-neutral produced biogas and high quality compost as its productsbut also on the fact that customers ...
By ORBIT e.V.
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An asymptotic observer-based monitoring scheme for a class of plug flow reactors
In this paper a monitoring tool is designed for a class of plug flow reactors whose mathematical model is described by a set of first-order partial differential equations with different coefficients in the convective terms. The infinite dimensional structure of such a tool is derived according to the methodology established in the design of the well-known asymptotic observer. As a consequence, it ...
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Energy Recovery Solution from the Wasted Grey Water - Case Study
Energy Recovery Solution from GREY Wasted Water in Large Condos or Hotels, or in WTP or from City Sewage pipes flowing under the street. The Energy Recover Solutions are Patented Technology with Major Benefits in different markets A practical solution to save Wasted energy. Return On Investment possible within 1 year. INNOVATIVE APPROACH IN HEAT RECOVERY USING DDI Patented ...
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Project - Champlon Belgium
Plant’s power: 1200 kW/h Daily feeding: OFMSW and mowing grass Goal: to extract more liquid from the digestate, thus less waste material to disposed To see video, please click ...
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Sequencing Batch Reactors - Case study
H2flow supplied the SAM SBR for treating this high strength wastewater. The wastewater is generated from dewatering wasted anaerobic digestion solids. In addition it supplied the glass fused to steel tanks as an integrated package. The tanks are covered with roofs and are 12m diameter by 7.4m tall. There is one equalization tank and two reactor tanks. There were a total of eight tanks ...
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Anaerobic Digestion technologies for the treatment of Municipal Solid Waste
Anaerobic Digestion (AD) of Municipal Solid Waste (MSW) is used in several regions worldwide and systems span a range of design options including wet, dry, thermophilic, mesophilic, batch, continuous, single-stage, and multi-stage configurations. This paper reviews a number of commercial and emerging solid waste digestion systems discussing performance and costs. Systems yield 250?710 m³ of ...
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Application of LCA to support solid waste management policy in Phuket
Life Cycle Assessment (LCA) is employed to evaluate the environmental performance of the existing Municipal Solid Waste (MSW) management system in Phuket and compared with different possible alternative Integrated Waste Management Systems (IWMSs). The results show that the scenario comprising source separation of waste for anaerobic digestion and recycling plus incineration (with energy recovery) ...
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Membranes in the Fast Lane – QUA CeraQ Featured in Water and Wastes Digest (W&WD)
Membranes in the Fast Lane – Ceramic membranes provide solution for auto parts manufacturing process Our CeraQ™ Ceramic Membrane was recently featured in Water and Wastes Digest (W&WD)’s September 2016 Issue. In this article, we detail a recent ceramic membrane solution QUA provided for an automotive parts manufacturer in Italy that was having trouble successfully removing ...
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Synergistic application of advanced primary and secondary wastewater treatment systems
Published in Water and Waste Digest membrane issue, November 2008 Miroslav Colic; Chief Scientist, Clean Water Technology Inc., Los Angeles, CA To be published in Water and Waste Digest later this year The increased regulatory pressures and demand for reused water stimulated development of several new wastewater technologies in the last decade. Advanced treatment systems are characterized by ...
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Case study - MBT Posen
Engineering and planning, procurement, production and delivery of machinery and materials handling as well as installation and commissioning of parts of a plant for mechanical and biological treatment. Customer: ZZO Poznan Retention: October 2014 Acceptance: June 2016 Input: Biowaste / Green waste -> Digestate / Loppings Throughput: 12.000 Mg/a 12.000 Mg/a 22.000 Mg/a 6.000 Mg/a ...
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Carbon offsets from organic waste conversion projects
The Climate Act ion Reserve (the Reserve) has long had a protocol to give credit for the capture and destruction of methane emissions from organic waste in landfills, but they have now opened up the possibility of credits for projects that prevent that waste from entering landfills in the first place. In October 2009, the Reserve adopted the Organic Waste Digestion Project Protocol, covering both ...
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Bio hydrogen production from kitchen waste
The hydrogen producing organisms such as Escherichia coli (E.Coli), Enterobacter cloacae, Hafnia alvei, Citrobacter freundii, Serratia marcescens and Clostridium acetobutylicum strains were isolated from the sludge of biogas plant. The hydrogen producing efficiency of isolated organisms from kitchen waste were examined under anaerobic conditions. Lab scale studies were conducted under controlled ...
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New system to convert food waste into fertiliser for greenhouse use gives potential 95% reduction in CO2 emissions
A new method of processing food waste into fertiliser has been outlined in a recent study. The process uses a digester system with microorganisms to break down organic waste into fertiliser. The resultant fertiliser was used in a low-energy greenhouse to produce a range of food crops. The method is a potential way to utilise food waste and reduce the energy consumption of food production as part ...
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Use of Waste-to-Energy Sludge Growing in Europe
This byproduct of anaerobic digestion is fertilizing fields and helping divert waste from landfills Anaerobic digestion (AD) is an important waste-to-energy technology that harvests energy — in the form of biogas — from organic pollutants in wastewater and solid waste. Anaerobic digestion is ideal for challenging wastewater streams that might cause significant public health risk if ...
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The mathematical modelling of biomethane production and the growth of methanogenic bacteria in batch reactor systems fed with organic municipal solid waste
A mathematical model was developed and validated for an anaerobic digestion system of the Organic Fraction of Municipal Solid Wastes (OFMSWs) by using a laboratory-scale system of two Packed Bed Reactors (PBRs). The equations were obtained by the mass balances of methanogenic bacteria of affluent and effluent lixiviated, as well as the interior in each reactor. The methane rate was obtained by ...
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Recovery of volatile fatty acids (VFA) from complex waste effluents using membranes
Waste effluents from anaerobic digesters of agricultural waste were treated with a range of membranes, including microfiltration and nanofiltration (NF), to concentrate volatile fatty acids (VFA). Microfiltration was applied successfully to produce sterile, particle-free solutions with a VFA concentration of 21.08 mM of acetic acid and 15.81 mM of butyric acid. These were further treated using ...
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Quantifying the impacts of co-digesiton of waste streams with sewage sludge
In order to slow down the impending impacts of global climate change due to consumption of fossil fuels, governments are looking at ways to develop and incentivise alternative renewable energy sources. Subsequently, the UK has imposed renewable energy targets of 15% of all energy consumption by the year 2020, but admit that – in order to meet carbon dioxide reductions of 20% by 2020 – renewable ...
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Macroscopic temporal studies on the effect of waste plastic materials on anaerobic digestion of raw vegetable market wastes: experiment and modelling
Rapid urbanisation of the human society has resulted in increasing quantities of municipal solid wastes (MSW). One significant component of MSW is waste plastics (WP). Most of those WP are non-biodegradable and impermeable in nature. It is generally advised that these WP should be retrieved and separated before the landfill operation. This includes an additional cost of operation. To date, no ...
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Extracellular polymeric substances and dewaterability of waste activated sludge during anaerobic digestion
Anaerobic digestion of waste activated sludge was conducted to gain insight into the mechanisms underlying change in sludge dewaterability during its anaerobic digestion. Unexpectedly, the results indicated that sludge dewatering properties measured by capillary suction time only deteriorated after 10 days of anaerobic digestion, after which dewaterability recovered and remained stable. The ...
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10 Industry Resources for Engineers
An integral part of being an engineer is staying up to date on new discoveries, developments, trends and news in your particular field. The ever-evolving nature of the job makes staying ahead of the curve a challenge, but necessary. Finding a good source of relevant information amongst the plethora of available resources can be difficult and time consuming. That’s why we’ve rounded ...
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