Sustainable Mining and Metallurgy

The bean processing effluent is a highly bio-degradable organic effluent containing large amounts of substances that can be degraded by microbes, such as plant protein, oxalic acid, and collagen. To facilitate the operation of a bean made noodle plant, a small effluent treatment system needs to be built. The system can process 100m³/d of effluent, following the flotation+UASB+A²/O process. The process design, main structures, and design parameters were described, and process features and parameter controls were analyzed. The process is a mature process, and makes good use of the plant space. The treated effluent can constantly meet the quality standard, and both the capital costs and plant footprint are saved.