waste treatment model Articles

  • Energy requirements for waste water treatment

    The actual mathematical models describing global climate closely link the detected increase in global temperature to anthropogenic activity. The only energy source we can rely on in a long perspective is solar irradiation which is in the order of 10,000 kW/inhabitant. The actual primary power consumption (mainly based on fossil resources) in the developed countries is in the range of 5 to 10 ...


    By IWA Publishing

  • Online Odors Monitoring in Waste Water Treatment Plants

    Odors are very distinct air contaminants as they generate nuisances (see note at the end). The factors playing a role in the determination of odor annoyance are : odor concentration and intensity, frequency, appreciation, duration, synergy and location. Chromatotec proposes an automated solution to well identify the origin and the level of odors. Technology Description We offer a ...


    By Chromatotec Group

  • Waste Water Treatment Plant City of Oakley, UT

    The City of Oakley was very happy with their new MBR facility except for the filter bag sludge dewatering system that was very labor intensive and usually didn’t produce an adequately dewatered sludge. Scott Rogers of Aqua Engineering and Bob Johnson, the Operations Mgr., chose to replace the bag system with a 0.9 meter model DDP belt press system from BDP Industries. The DDP belt press ...


    By BDP Industries

  • An optimisation model for transportation of hazardous wastes

    The North American Free Trade Agreement (NAFTA) has considerably increased the transport of materials along the US-Mexico borders. Maquiladoras are business entities that are structured to take relative advantages offered by both countries to develop cost-effective products. Current Mexican regulations require that hazardous wastes generated by US companies be shipped back for proper disposal. ...


    By Inderscience Publishers

  • Modelling industrial waste management at regional scale

    A mathematical model is proposed for planning a regional programme for industrial waste management. The model is based on economic optimisation and allows preliminary decisions to be made at the operational planning phase. Moreover, it allows management of the treatment and disposal of different types of industrial waste once the treatment facilities and the disposal sites are defined. The model ...


    By Inderscience Publishers

  • Mitsubishi corporation - Spent Potliner (SPL) hazardous waste treatment - Case Study

    The Challenge Spent Potliner (SPL) is generated in the primary production of aluminium and worldwide is estimated to rise at a rate of over 500,000 tonnes per year. The SPL waste contains concentrations of cyanide and fluoride and gives off noxious and flammable gases when in contact with moisture. Unless carefully handled, these contaminants readily "leach" into the surrounding soils and ...

  • Waste in the Netherlands

    Household waste More than 10% of waste arisings in the Netherlands consists of household waste. The local authorities are responsible for collecting this category of waste. A set of rules compels the local authorities to collect separately organic household waste, glass, paper and board, textiles and small chemical waste. The policy aims at giving producers more responsibility for their products ...


  • New model of municipal solid waste management

    In the current scenario, the waste is an indicator of socioeconomic development. So, the more booming economy is, the greater the volume of produced waste. The downside of this scenario is the result of technological bottlenecks of conventional management models. In this context, this paper discusses and proposes a new model for urban solid waste (USW) management, based on the ...


    By Inderscience Publishers

  • Effect of co-managing organic waste using municipal wastewater and solid waste treatment systems in megacities

    A model was developed to calculate the mass and heat balances of wastewater and municipal solid waste treatment plants when these plants operate either separately or together with a mutual dependence on mass and energy. Then the energy consumption, life cycle costs (LCCs), greenhouse gas (GHG) emissions and effluent quality were evaluated under various scenarios to identify the most effective ...


    By IWA Publishing

  • Canarina DESCAR software · plant treatment modeling · wastewater · algorithms 13

    Single port.- In such a case, we have the next relationships e=0.15H S=0.089 g’1/3 (H-e)5/3 Q-2/3 B=SQ/eUa (*) However, at high velocity values and if B<=0.3H, the approximation is not correct .   Canarina DESCAR software · plant treatment modeling ...

  • Horizon and water treatment

    Horizon is an environment company focused on water treatment.In the latest years,with the improvement of industrial economy,water quality is becoming worse and worse.To prevent the pollution trend,our government has raised the standard of sewage discharge several times,so traditional process and technology of water treatment can’t apply for the environmental requirements and ...


    By Horizon Water Co., Ltd.

  • A consideration of waste treatment in metropolitan Bangkok based on long-term social environmental accounting

    This research targets the waste treatment system in the metropolitan area of Bangkok, Thailand (hereafter referred to as ‘metropolitan Bangkok’) and attempts to restructure the previous environmental assessment model which anticipates future uncertainties. The research also proposes guidelines for the social environmental accounting theory. Basically, the restructured environmental assessment ...


    By Inderscience Publishers

  • Dairy shed wastewater treatment and modelling by anaerobic digestion technology

    There is a growing interest in the application of Anaerobic Digestion (AD) technology to Australian dairy farms not only for the reduction of environmental pollution caused by the effluents but also for recovering bioenergy. To be able to design and operate efficient AD systems, appropriate mathematical models need to be developed to observe and analyse the anaerobic process dynamics, such as the ...


    By Inderscience Publishers

  • Optimizing Wastewater Treatment

    ' Growing volumes of both industrial and municipal wastewater are being discharged to surface waters but the treatment provided frequently is inadequate to protect the desired uses of the receiving waters. With limited resources in terms of both institutional capacity and finance, governments face difficult choices in optimizing their investments in municipal systems and establishing practical ...


    By The World Bank

  • Optimal waste load allocation using graph model for conflict resolution

    In this paper, a new methodology is proposed for waste load allocation in river systems using the decision support system (DSS) for the graph model for conflict resolution II (GMCRII), multi-criteria decision making (MCDM) analysis and the Multi-Objective Particle Swarm Optimization (MOPSO) algorithm. Minimization of total treatment and penalty costs and minimization of biological oxygen ...


    By IWA Publishing

  • 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 ...


    By Inderscience Publishers

  • Methane emission estimates using chamber and tracer release experiments for a municipal waste water treatment plant

    This study presents two methods for estimating methane emissions from a waste water treatment plant (WWTP) along with results from a measurement campaign at a WWTP in Valence, France. These methods, chamber measurements and tracer release, rely on Fourier transform infrared spectroscopy and cavity ring-down spectroscopy instruments. We show that the tracer release method is suitable for ...


    By Ecotech Pty Ltd

  • Calibration of a simple model for waste stabilisation pond performance in seasonal climates

    The paper describes the calibration of a model for waste stabilisation pond (WSP) performance in seasonal climates, based on the use of readily available climate data sets. Calibration data were taken from a wide geographical area of Canada and the USA, including coastal and moderately seasonal sites. Good agreement with measured values was shown using a biochemical oxygen demand (BOD) decay ...


    By IWA Publishing

  • Canarina DESCAR software · waste water modeling · algorithms 2

    8.1 Buoyant Jet model A type of mathematical model that has been developed for sumerged round buoyant jets is the length-scale model.  Discharges flows can be divided into different regimes each dominated by particular flow properties. Within each regime, the flow may be approximated with simple mathematical relations describing the simplified problem. A model that uses ...

  • Waste Water Treatment Plant sees Economic and Environmental Return on Investment with Biosolids Drying System from Therma-Flite

    Therma-Flite, a resource recovery technology company, releases a new case study that provides municipalities with a look at how one mid-sized city has achieved its goals of eliminating transportation and landfill costs associated with biosolid waste disposal. Regulatory, economic and environmental pressures prompted the plant operations leader to seek equipment and systems that could transform ...


    By Therma-Flite Inc.

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