Environmental treating wastewater from laboratory by plasma at atmospheric pressure

Abstract

The waste water has been strongly negative affected to human life in large area, especially wastewater from laboratory because of a lot of chemicals and bacteria. The disadvantages of the currently state are the using treatment systems with low treatment efficiency, costly and unstable due to using microbiological, biochemistries, combining physical chemistry method, or advanced oxidation process. In this study, the treatment wastewater from laboratory using plasma at low temperature and at atmospheric pressure was designed and developed to solve the above disadvantages. An 80 l/h treatment system was completed and assembled in the Dong Thap Experiment Technique and Applying Science Technology Center DOTAST to test and evaluate the treatment efficiency. In order to prove the stability of the processing system, before and after treating, water samples were collected and tested by the DOTAST at various times. The results showed that treatment efficiency reached to 70–90% and satisfy QCVN 40: 2011/BTNMT column A. The system is stable, compact, automated and saving energy.