Thereafter, for several hours pump circulates the solution with the reagent on the cleaning circuit, thereby providing both a passage of intense chemical reaction and degradation products in the transportation tank for further recycling. Disposal of spent reagent has a number of strict requirements.
Baada ya hapo, kwa masaa kadhaa pampu circulates ufumbuzi na reagent juu ya kusafisha mzunguko, na hivyo kutoa zote mbili kifungu cha mmenyuko kemikali na uharibifu wa mazao makali katika usafiri tank kwa ajili ya kusindika zaidi. Ovyo wa ilitumia reagent ina idadi ya mahitaji kali.