Garbage disposal has gradually become a key issue faced by environmental governance. What must be controlled in garbage is the calculation of volume. In this paper, according to different landfill conditions Anhui, including: covering soil, overlying HDPE membrane, concrete, etc., combined with physical differences between rock mass and at bottom landfill. The covered membrane adopts transient ...

An input-output model a la von Neumann with recycling of resources and abatement of pollutants is presented. We allow for joint production, durable capital goods, and heterogeneous labour. In addition, the model covers household garbage so far neglected in the literature. The existence of an equilibrium is proved, and the effect of classification of garbage on the rates of growth and profit is ...

manure and putreseible garbage are some of the main sources of pathogenic germs in countryside’s. on the other hand, demand for fertilizer and energy increases in rural areas every day. to study potential of cow manure for these requirements a 16,5m3 pilot plant was designed and constructed as fermentation tank near animal husbandry of karaj agriculture faculty. some 260kg cow manure and water ...

the effect of three levels (0, 28.65, 57.31mg /200mg substrate) of golpar (heracleum persicum: hp) on in vitro rumen ecosystem and on methane production was assessed. gas production (gp) was recorded from 1 to 54h past of incubation. the parameters studied were in vitro gas production (ivgp), methane production, ammonia-n concentration (nh3-n), in vitro organic matter degradability (ivomde), pa...