Studies On The Technology Of Anaerobic Digestion Of Municipal Domestic Solid Waste Treatment

The thesis explores in anaerobic digestion of municipal solid waste Including small experimentation and middle experimentation. this approach boasts in its ability to combine pollution treatment with energy and material recovery as it can produce biogas and fertilizer. Anaerobic digesters produce conditions that encourage the natural breakdown of organic matter by bacteria in the absence of air. Anaerobic digestion (AD) provides an effective method for turning residues into: Biogas Fibre Liquo. A properly designed and operated AD plant can achieve a better energy balance,it also Reducing greenhouse gases, Displacing use of finite fossil fuels, Recycling nutrients, Reducing land and water pollution, Supporting Organic Farming, Efficient electricity distribution and so on.For tomorrow and the future, the authors expect the driving forces for the use of anaerobic digestion to continue to drift away from energy production. Organic stabilization and pathogen reduction, in addition to energy production will be important reasons to use AD in developing countries. Energy savings in operation and minimal sludge production from AD versus aerobic treatment will become more important in energy and landfill deficient areas of Europe and Asia. The use of more complex AD processes for industrial waste treatment will increase.Through stage and continues experiments, experiments were designed and carried out on the feasibility of the approach; dynamic research ;best reaction indexes, etc. Based on experimental data, material balance modle was built to calculate the COD and C balance in the thesisThe results show that under the experimental conditions, the approach is feasible。The best reaction indexes are: retention time of 13d;solid concentration of 10% and load of 10.1gTS/(L*D)。The COD is reduced by 65.8%with a gas production of 11.75L/kgts and methane concentration of 63.5%. The material balance is excellent in the thesis with a COD utility ration. the balance of MSW is well .Anaerobic digestion projects, as with any development, will create some risks and have some potential negative environmental impacts. These need to be removed wherever possible, or at least minimised. With good design and proper management of digesters, and the appropriate technology in the right place in the right circumstances, all the potentially negative environmental and economic implications of AD can be minimised or removed completely.