Wastewater Treatment of “Kamaboko” Processing Plant (I)

An investigation into the actual state of wastewater discharge and for a method reducing its organic loading

Abstract

The main purpose of the recently used wastewater treatment method is to obtain the best water quality. On the other hand, considering the spread of sewage works in Japan, it is important to develop a method for treating high-strength wastewater to obtain an acceptable water quality for sewage works at a practically low cost. Hence, in this study, we selected a “Kamaboko” processing plant as a typical example. To obtain basic data for the design of a suitable wastewater treatment plant, organic loadings of the constituted unit processes and their reducing methods were respectively investigated. The following results were obtained. Except for the fresh fish refining step, loading from the cleansing of the processing facilities showed the highest. Also, if recovery yields of intermediate products by some methods except for water washing enhanced, loading decreased remarkably. Based on this result, we have proposed some methods for decreasing loading. They are the conversion of material used and the modification of water washing operation.