Ministry of Research and Technology through the Climate Change Impact Control Programme make mitigation pilot project Greenhouse Gas (GHG) emissions for the industry knows little in two small industrial areas out in Navan, which is in the village and hamlet Kalisari Ciroyom.
This pilot project consists of three activities. One of them is to make the unit a pilot sewage treatment plant (WWTP) small industrial liquid out. Both activities are lainnnya production process improvement and energy efficiency through training, mentoring and implementation as well as social studies, economics, policy on small industrial cluster
Why does the industry know? Deputy Assistant to the Deputy Science and Technology Needs Analysis for Administrative and Research and Technology Ministry of Science and Technology Corrections Prihantoro Eddy said, the industry knows is one of the industry was a significant contributor to emissions.
Total industry knew in Indonesia reached 84,000 units. With a production capacity of more than 2.56 million tons per year, the industry knows this produce liquid waste as many as 20 million cubic meters per year and produces about 1 million tons of emissions of CO2 equivalent. As many as 80 percent of the industry knew was on the island of Java. Thus, the plant emitted know in Java to reach 0.8 million tonnes of CO2 equivalent.
Liquid waste processing unit knew that was developed and installed in the Village and Hamlet Ciroyom Kalisari Fixed Bed Reactor model and built with the anaerobic system. The consideration, this system does not require a large area and does not require energy for aeration.
Another advantage of this system is in the process produces energy in the form of biogas and waste food and water for fish and other livestock. In addition, the process is more stable and less sludge produced.
Tofu liquid waste treatment unit consists of a main unit called a digester, the waste collection pipe network, gas container, trickling filters, tissue residual waste processed, the process water ponds.
Main unit or reactor that is placed in the Village Kalisari has a volume of 21 cubic meters, equivalent to 1,200 kg of soybeans / day (for 20 craftsmen know), while in Hamlet Ciroyom rate of 5 cubic meters, equivalent to 300 kg soybean / day (for five craftsmen know).
Tofu liquid waste still contains organic materials that contain nutrients that are good enough for bacterial growth metanogenik. The presence of bacteria in the reactor metanogenik can cause methanogenesis process that can produce methane gas. The resulting methane gas can be utilized as an energy alternative that can reduce the impact of global warming.
Bred anaerobic microbes that can cause the process of methanogenesis and mendegerasi COD, TSS is the first step in building a bioreactor. For that, the first reactor filled with cow dung to reproduce anaerobic bacteria or microbes. In addition, the reactor was also filled by a piece of bamboo along the 5-10 cm, as 'home' for microbes. This process is carried out for two to three months.
The first step was a critical success in the Village WWTP Ciroyom Kalisari and Hamlet. Both WWTP is capable mendegenerasi COD value to 85 percent, so the water can be processed into fish feed and other livestock. In addition, by processing as much as 5 meterkubik liquid waste per day, WWTP also produce methane gas that can be used for culinary purposes 21 households per day.
To use the processed biogas effluent know, do not need a special stove. Simply use the stove on the market with minimal modification, namely pull nozzle, kompoenen which controls the gas pressure. This is because methane is a low-pressure, unlike the high-pressure LPG.
To manage these biogas, the craftsmen knew to form groups. It was this group that manages and maintains the unit WWTP. The members who enjoy the biogas provides 10,000 per month contribution to the cost of wastewater treatment. By using the biogas, the craftsmen knew to do save fuel costs. According We are, one pengajin know, before using biogas, he usually uses firewood for 400 thousand (as much as a small truck) for production of tofu and cook for 6 days, after using biogas, firewood can be used up to 8 days.
Eddy hopes prototypes developed by the Ministry of Research and Technology WWTP in the Village and Village Ciroyom Kalisari this can be replicated by Regency Banyumas to industrial centers know others in the area and also by other local governments in Indonesia.
