I would suggest using an "Ardrox" degreaser (Hot). About 140F if possible. A 10% Gardeoclean, and 90% DI water. This should remove all grease needed to come off. Rinse down with hot water and the parts should come dry and clean fairly quickly.
The tank is a metal bearing "sludge". Metals of aluminum, tantalum, copper, iron, lead titanium, chromium 3+, possible but very slim to none chance of chromium 6+. I had been making the sludge tanks before by using a few drums of spent caustic. Lowering the pH was easy, one drum of HF and...
Thanks for the info. It worked out. Just took alot more caustic then I thought, and yes I checked out a friends old chemistry book. HA HA. I also found that the Magnesium Hydroxide is actually cheaper then the Sodium here, so I think I will order a few barrels and see how it goes. If I work...
Question: I have a 1000 Gallon waste treatment tank that has spent nitric acid, hydrofluoric acid, ammonia hydroxide, hydrogen peroxide and lots DI water. It is a sludge tank being treated to go out to the state. The problems which I am having are: the pH has not raisen much at all. I have...
Question: I have a tank that has nitric and hydrofluoric acids mixed together, along with lots DI water. I am trying to pH this to be sent out to the state. I have been adding Sodium Hydroxide to bring it up, but it doesn't seem to be working much at all. I was holding at a pH of 2.5 for the...
