Cleaner production analysis of tofu small scale enterprise

Tofu has been consumed and favored by most Asians. Indonesian Central Bureau of Statistics states that the average consumption of tofu in 2017 was about 0,15 kg/person/week. On the other hand, the higher level of tofu production, the level of waste contamination, is also higher. Therefore, cleaner production is one of the practical approaches to reduce tofu industry waste. This research aims to analyze the stages of tofu production in small scale enterprises which have the greatest volume of liquid waste, assess parameters that exceed the quality standard and determine the alternative of cleaner production strategies for tofu production. This research analyzed mass balance, Activity Relationship Chart, Activity Relationship Diagram, wastewater characteristics test, and alternative selection of cleaner production strategy with the pairwise comparison. This research found out that the stages that produced the most liquid waste were the treatment and waste disposal process. The highest priority and the possible alternative of cleaner production to be implemented were waste separation at each stage, wastewater recycles, and water vapor recycles.