Efficiency of some microbial activators in organic composting from market waste

This research has studied the efficiency of some microorganism activators in organic composting from market waste. Market waste was collected from Sie Moom Muang Market, Pathumthani province. Three types of microorganism activators were used for this research : LD-1, F-60, and Bionic. This study was conducted using both laboratory and field experiments at Khlong Sip-Song, Pathumthani province. There were 4 treatments which consisted of market waste with LD-1, F-60, Bionic, and without microorganism activator with 3 replications on laboratory experiment. The controlled factors were the size of market waste, moisture content, temperature, and aeration. Composted samples were analyzed for physical, chemical, and biological properties. The results indicated that the quantity of plant macro nutrients of all four treatments was within the standards of Land Development Department. The decomposition rate that was considered from C/N ratio could not identify the different of each treatment. Therefore, the decomposition rate was considered from the physical characteristics of the compost. Market waste with LD-1 was selected for field study because of the highest decomposition rate (35 days). Market waste without microorganism activator was also selected because the quantity of plant macro nutrients was within the standards of Land Development Department and the composting time (42 days) was not quite different in comparing with LD-1. In field study, the suitable turning frequency of the compost piles was studied with 2 sets of both market waste with LD-1 and without microorganism activator. Each set had 4 treatments, which consisted of turning period of the compost pile at every 4, 7, 10 days, and no turning period. The results showed that all treatments had the same composting time (35 days) and the quantity of plant macro nutrients (N, P2O5, and K2O) of all treatments was within the standards of Land Development Department. Each treatment was no different because market waste is easily decomposed material (C/N ratio is lower than 100:1). However, adding activator LD-1 resulted in a reduction of odour.