The present Treatment System (10) addresses destruction of general nitrogen based organic (plastic) explosives in wastewater discharge applications and potential recovery of quantities of explosives otherwise lost to the environment. The Invention (10) addresses the problem of such explosive matter entering the environment in one aspect of the invention by treating a wastestream or aqueous substance from a plant containing such matter by a process including selective filtration (16), reverse osmosis (18), crystallization (20) and continuous retained biological treatment (12) to recover a maximum amount of explosive material from the wastestream or aqueous substance, containing organic nitrate explosive matter and related materials prior to discharge to the environment, or for the purposes of recycle, burning or food for the continuously retained biological subsystem when utilized in the invention. In included aspects of the system (10) filtration sub-process 1 (S-p 1), crystallization and filtration sub-process 2 (S-p 2) and continuous biotreatment sub-process 3 (S-p 3) are employed to resolve the problem of excessive explosive materials being dumped as waste into the environment and the problems imposed in treating wastestreams and providing clean aqueous matter to the environment after treatment.