Research On Rural Septic Tank Toilet System Based On Whole Ecological Chain

In the process of rural toilet reform,septic tank toilet is widely used in rural areas due to its simple technology,low cost and convenient implementation.However,in the process of use,problems such as random discharge of fecal fluid and difficult disposal of fecal residue are exposed.In view of the present reform of the rural areas to the toilet of problems existing in the septic tank type toilet,this article from the perspective of ecological cycle,through the investigation and analysis of the existing waste treatment technology,construct the whole chain of septic tank type toilet system in rural areas,set up from the collection,transportation,storage,processing solutions to agricultural use,realizes the septic tank type toilet product harmless,zero emissions,and recycle.Firstly,this paper analyzes the material change process of human excreta in the septic tank toilet,and concludes that the manure residue of the septic tank contains abundant nitrogen,phosphorus,potassium and a lot of organic matter.Manure does not meet the technical specifications for liquid fertilizers,but it contains nutrients that can be used to fertilize crops.Septic tank slags and slurry have great potential value and are misplaced resources.Secondly,starting from the theory of ecological cycle and ecological chain,this paper takes villages and towns as the object,constructs the rural septic tank type toilet system system with full ecological chain,returns the excrement of septic tank type toilet to the farmland after detection,collection,transportation,storage,treatment and conversion into fertilizer,and sorts out the technical scheme of each link.Finally,the whole ecological chain of rural septic tank toilet system operation process.Human excreta is treated by septic tank to obtain harmless fecal liquid and fecal residue.Harmless fecal liquid is collected and transported to the village level fecal liquid regulation treatment tank for storage and regulation,and then used as liquid fertilizer in agricultural production.The manure sludge is collected and transported to the composting station by suction truck,and then used as solid fertilizer in agricultural production after drying,dehydration and composting technology.Build these two routes.Most of the rural areas do not have underground pipe network and sewage treatment plants,can not be forced in accordance with the urban model of the treatment of septic tank slag and manure.The technical route proposed in this paper can realize the regional treatment and utilization of fecal pollution resources,realize the innocuous,zero emission and recycling of three latrines with latrines,meet the continuous development needs of farmers in villages,and promote the sustainable development of rural environment.