Study On The Low-scale Organic Matter Municipal Sludge Compost And Garden

This text discourse on the development of sludge reduction and land utilization。From the point of view of production and practicability and combining the plant practice about producing of Zhengrunzhou Wastewater Treatment Plants,Zhenjiang,this text make a series of test in laboratory and a series of demonstrating,and discuss the measure of reducing the cubage of sludge.The text study on the elect of the opsonin applied to adjusting sludge quality in wastwate treatment plants and on the operation parameters of the first zymolysis phase in the course of dewatered natural aeration sludge composting.Main conclusions are as following1. The measure can be used on the course compost:1)the PH furger of sludge don't need adjust ;2)The containing water ration can be lessenedon floor by solar energy;3) Sludge can be stabilization by coerce aerated static system ;4) It must add organic matter degradation easily to sludge in order to adjust C/N rationas composting because of organic matter ration less 28%, then the system can run stably during composting.2. The floor level of organic matter ration can be reckoned on varies cubage of composting system by Material & heat balance and process analysist.Then can resolve the composting question that organic matter ration fluctuatet with the changing of season.3. When the sludge was utilizated in land after composting, it is a viable measure which producing the organic-inorganic multiplex-fertilizer by using the sludge compost. As the sludge of Zhengrunzhou Wastwate Treatment Plants,zhenjiang,the organism in sludge is lower and the average quantity of heavy metal arseni(cAs)which is 120mg/kgDS is excess than the max- permissibility of the sludge agro-utilization standard which is 75mg/kgDS。Then the dewatered raw sludge compost should not apply to the food cycle plant while can apply to the plant such as the garden plant,lawn grass,tree,road virescence plant and so on.Or the dewatered raw sludge compost could be utilized as former soil of planting the plant other than food cycle plant.4. The experimentations with the application of sewage sludge compost to for Festuca arundinacea Tall Fescue,Fatsia japonica,China rose prove good responses...