| dc.description.abstract | Slaughterhouse wastes are considered as 'very contaminating' to environment while they are also have many good potentials which underutilized. In North Sumatera Province, there are many small scale slughterhouses belongs to people/TPH which are have uncontrolled disposal. Small scale slughterhouses belongs to government/RPH have facultative ponds for slurry disposal. There is one big scale slaughterhouse which under Indonesian Government Regulation/ PP No.51 Tahun 1993 has to implement controlled disposal, i.e. solid wastes to be dumped to landfill and liquid wastes to be processed by activated sludged. In order to minimize problems such as ecology, social and economy in Indonesia, slaughterhouse wastes should be reused as they produce products with the same quality as products from primary resources whilst their pollutant could be minimized. In order to utilize full benefit of slaughterhouse wastes, researches should be conducted. The first research objectives were to minimise polutant level and to exploit a renewable energy from rumen and urine through metanisation technology. The research used Completely Block Design (3x3). The first factor was stirring with 3 level,i.e. P0 = without stirring, P1 = JO minutes stirring, P2 = 20 minutes stirring. The second factor was urine addition with 3 level, i.e. U0 = without urine, U1 = 20% urine, U2 = 40% urine. There were 5 replications. Rumen and urine were digested by 6 biodigesters. The results showed BOD (Biochemical Oxygen Demand) decreased 72% and P2U0 produced significantly different metane,i.e.170 litres metane every 1 kg fresh rumen. The second research objective was to utilize feces and feed leftover become compost. Biogas sludge was used as compost fermentor. The research used Completely Randomized Design with 4 treatments,i.e. P0 = without blood flour, P1 = 6,5% blood flour, P2 = 13% bloodflour, P3 = 19,5% bloodflour. The results showed that on the second weeks of composting, C/N ratio decreased from 35 to under 20 and on the fourth weeks of composting C/N ratio decreased to 12. A tendency is notified that P 3 was better that others. On the fourth weeks, compost colour were darker, smell like soil and there were biota such as mite and worm. Therefore, compost can be said to be of good quality. As the results of the researches were achieved, then an utilized slaughterhouse wastes mapping was established. The mapping objective was to optimize slaughterhouse wastes utilization so that zero waste could be achieved whereas full benefit also would be presented. The results of this researches are worthed to be implemented on TPH/RPH in Indonesia. | en_US |
