Research of establishment of resource and energy network between an waste treatment system and sewage treatment system in an urban area

我们认为一个废物处理系统和一个污水处理系统是一个城市地区的“能源和资源回收系统”。在回收系统中，回收焚烧炉余热、污水热能和污水势能，收集消化气体等，并通过光伏发电收集能源，这些能源和资源在两个处理系统中使用。我们可以透过能源及资源循环再造系统，遏止因引进先进的处理技术而增加的能源消耗。首先，我们研究了使用污水处理厂产生的消化气体作为废物收集车辆的燃料。Case-1是利用消化气体中的甲烷作为现场“磷酸燃料电池（PAFC）”的燃料，利用燃料电池产生的电能为电动垃圾收集车提供动力。Case-2是利用消化气体中的甲烷作为垃圾收集车的燃料，该车辆的发动机是“Polym…More er Electrotype fuel Cell （PEFC）”。可再生能源的数量超过了废物收集和运输所需的能源数量。案例1中可再生能源与能源消费量之比为4.3，案例2中可再生能源与能源消费量之比为4.7。当我们引入热电联产系统并在case-1中使用热能时，case-1的能源效率优于case-2。如果我们使用电动汽车和燃料电池汽车进行废物收集和运输，我们可以大大减少Nox排放量和Sox排放量。接下来，我们研究了污水系统中产生的回收能源和可再生能源覆盖了引入先进污水处理技术所造成的电能消耗增加的可能性。关于能耗的增加，通过引入高级污水处理，污水处理的耗电量是现有系统的1.4倍。关于回收和可再生能源的生产，我们可以获得相当于现有系统耗电量55%的电力。污水处理系统利用再生能源产生的电量是引进先进污水处理系统后增加的电量的1.4倍。因此，我们已表示，在污水处理系统引入先进的污水处理系统，使用再生能源和可再生能源，可以减少电力增加的问题。少

We considered that a waste treatment system and a sewage treatment system are an "Energy and resoure recycling system" in an urban area. In the recycling system, waste heat of incinerator, sewage heat energy and potential energy of sewage are recovered, digestion gas is collected and so]ar energy is collected by photovoltaie power generation, and these energy and resource are used at the two treatment system. We can deter an increase of energy consumption caused by introduction of advanced treatment technologies with the energy and resouree recycling system.At first, we examined the use of a digestion gas gonerated at a sewage treatment plant as fuel of waste collection vehicles. Case-1 is the use of methane of digestion gas as fuel of onsite "Phosphoric Acid Fuel Cell (PAFC)" and the use of electric power generated by the fuel cell for the power of electric waste collection vehicle. Case-2 is the use ofmethane of digestion gas as fuel of waste colleetion vehicle which engine is "Polym … More er Electrotype Fuel Cell (PEFC)'. Amount of the renewable energy exceed the amount of energy need to waste collection and transportation in both eases. Ratio afthe amount of renewable energy to the amount of consumed energy is 4.3 in case-1, and it is 4.7 in case-2. When we introduce co-generation system and use heat energy in case-1, then the energy efficiency of case-1 is better than case-2. If we use the electric vehicle and the fuel cell vehicle for waste collection and transportation, we can reduce Nox emission volume and Sox emission vclume very much.Next, we have examined a possibility of that the recycle and renewable energy produoed in the sewage system covered an inerease of electrie energy oonsumption caused by introduction of an advanced sewage treatment technology. About the increase of energy consumption, by introducing advanced sewage treatment, the amount of electric power consumption of the sewage treatment become 1.4 times of that of present system. About the producing of the recycle and renewable energy, we can get the electric power that is equivalent to 55% of the electricity consumptien ef the present system. The amount of electricity generated from the recycled and renewable energy at the sewage system is 1.4 times as the amount of electricity increased by introdueing of the advanced sewage treatment system. Consequently, we have indicated that we can cut down the problem of increase of electricity by introducing of the advanced sewage treatment system with the use of recycied and renewable energy at the sewage system. Less