In order to provide help for the accurate application of biogas slurry in the field, the application of biogas slurry and control technology of hydrogen sulfide in biogas slurry were reviewed. Results of recent researches suggested that source control and end-treatment were the two measures to remove hydrogen sulfide in biogas slurry, including physical method, chemical method and biological method. Some conventional deodorizing methods were introduced and compared.
The author summarized the advantages and potential risks of urban-rural organic wastes agricultural reutilization to reduce the potential risks of urban-rural organic wastes agricultural utilization. The results showed that： the organic wastes generated in urban-rural life as fertilizer applied into farmland made an impact on soil properties, then indirectly affected the soil microbial biomass and soil enzymes activities. In addition, the heavy metals in organic wastes would accumulate in the soil and damage to soil environment. Therefore, it was necessary to make a long- term research on the environment of soil which agricultural utilized of wastes.
