This residue is the Fellah type.

这个残余物显示为最原始的农耕形态。

The discharge of hold-washings and other residues by vessels carrying noxious or corrosive goods must be conducted in compliance with the state provisions for vessel sewage discharge and shall be truthfully recorded in the logbook.

载运有毒、含腐蚀性货物的，排放洗仓水和其他残余物，必须按照国有污水排放的规定进行，并如实地记入航海日志。