Preliminary study on fermentation and resource utilization of natural rubber processing wastewater
The treatment and discharge of wastewater from natural rubber processing was an urgent practical problem to be solved in the natural rubber processing industry.It had high production application value to explore the fermentation effect of different bacterial agents on wastewater from natural rubber processing and utilize them resourcefully.In this study,four different treatments of natural rubber wastewater i.e.without adding bacteria,adding Bacillus subtilis,adding Actinomycetes,adding Aspergillus niger and a control group of clear water and compound fertilizer were set up,and a pot experiments was conducted to further study the impact of different fermentation liquids on the growth,quality and physical and chemical properties of Pak Choi.The results showed that the fermentation effect of adding Aspergillus niger was the best,followed by Bacillus and Actinomycetes.Different treatments of fermentation liquid irrigation had good effects on the growth quality of Chinese cabbage,of which the effect of adding Aspergillus niger and actinomycetes fermentation was the best,followed by adding bacillus.The soil porosity increased with the addition of microbial agents,and the average value was 1.76%higher than that of the water control.The addition of Aspergillus niger fermentation broth had the highest increase in soil porosity.Compared with the water control,the soil pH and organic matter content increased by 0.33%and 19.2%,respectively,after irrigation with Aspergillus niger fermentation broth.To sum up,adding Aspergillus niger has the best effect on the growth and quality of Chinese cabbage and has no effect on soil porosity.
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万方数据
