This residue is the Fellah type.

这个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、含腐蚀性货物的船舶，排放洗仓水和余物，必须按照国家有船舶污水排放的规定，如实地记入航海日志。