Abstract
Dairy farmers are required to have a purification facility that meets the legalization of unlicensed livestock and the increasingly stringent effluent water quality standards, with the alternative requirement of consignment treatment application. However, there is no defined standard model that addresses these requirements. Furthermore, even with a purification facility in place, many cases exist in which the purpose of the facility loses its significance because it does not meet the effluent water quality standard. For this reason, the National Institute of Livestock Research published the “Technical Guideline for Purification of Milk Washing Wastewater” in 2016, including data from the Livestock Environment Management Agency which evaluates methods relevant to dairy farmers, including the use of milking washing water purification facilities, livestock manure treatment facilities, and other related technical applications. However, a standard model has not yet been established. In this study, a non-aggregation electrolytic oxidation experiment was performed on raw water used as milking washing water. The results showed that the efficiency of the treatment of total nitrogen and ammonia nitrogen increased proportionally with treatment time, resulting in a removal rate of 81.8% of total nitrogen and 80.7% of ammonia nitrogen. In addition, the results demonstrated that the chromaticity item also increased proportionally to the oxidation time. When considering the water quality measurements of organic substances (BOD<sub>5</sub> and COD<sub>Mn</sub>), the treatment efficiency was determined to be limited, with the removal of organic substances limited by the single electrolysis process.
Published Version
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