Spent Caustic Treatment Success Experience

I would like to know are there any success stories for treatment of spent caustic effluents and has anybody worked directly with this treatments?

Thanks 

Taxonomy

• Oxidation
• Reclaimed Wastewater
• Biological Treatment
• Industrial Wastewater Treatment
• Decentralized Wastewater
• Industrial Water Treatment
• Wastewater Treatment
• Water and Wastewater Manager

5 Answers

1. Dear Mahmud,
   Recently we performed test on spent caustic solutions with our electro-coagulation reactor and achieved good removal rates (99%) and the production of sulphur.

2. We (JIPL) have developed a process to clean the caustic effluent from aluminium extrusion production.  It recovers the caustic and sodium aluminate as a 'clean' product which has a resale value.

    

3. The process/technology known as Bioremediation has a 40 year history of biodegrading the worst of the worst caustic compounds known to man.  It is non pathogenic, non mutational, works in a 5.5 to 10.0 ph. range, and a temp range from 35 F to 427 F.  Found in nature. When process is complete only elements remain. No residual of any kind. A side benefit is the organic compounds being degraded release O2 into the solution/water.  For a listing of these caustic materials cleaned by this process see U.N.E.P. " The Dirty Dozen".  Also an A - Z list is available.  When we are connected I can send you the appropriate files. Pics also.

4. There certainly are processes, all depends on what you want to achieve and what costs. Our process train includes >99,5% organic destruction and then recovery of caustic and production of sulphur. Depending on level of organics, energy recovery is possible that could enable the plant to operate off grid.

5. Yes Mahmud, a recently developed hydrothermal process that has significantly improved the old wet air oxidation process,

   contact me on email gary@dikubu.co.za for further discussion

   Regards