Study On Utilization Of Municipal Sewage Sludge In Beijing

With the growth of the population and the development of the economy, the natural resources in the world are being consumed swiftly and the technology of resue of waste is being attached more importance by many countries. The lack of the natural resources in China is so serious that it has made the research of resources reuse even more important than ever.The sludge of urban sewage disposal plant is the inevitable wastes in process of waste water treatment, and the treatment and disposal of this wastes are unavoidable problems. Beijng is the capital of our country, its environment problem should been cared of. So, the treatment and disposal of the sludge are more impotant significant.The thesis analyses and compares detailed the component of the sludge of every urban sewage disposal plant in Beijing, and put forward the utilization approach of sewage in dependence on its characters.It also makes detailed reseach to characteristic of the sludge from Beijing capital international airport sewage purification station. This text devises the model technological process that organic composite fertilizers, it also lists technological parameter and main production devices. After estimating investment,producing costs and economical analysis, we believe that the organic composite fertilizer has a certain degree profit, and the former has better economical profits, social profits and eveironmental profits.The thesis analyses the utilization approach of sludge of every sewage disposal plant in Beijing, we believe its soil utilization has great potential. The soil utilization includes woodland utilization farming utilization, using as lawn medium and application to the abandoned mining land reclamation.The author thinks the utilization approach of sludge shoule been considered on the whole and comprehensively disposed. It is a good way to set up outlet plant, so thesludge can be utilized reasonably.