Variables effecting ozone treatment of physical-chemical effluent
The treatment of raw sewage from an on-site apartment area was investigated in a series of laboratory experiments in which changes in turbidity, pH, total organic carbon, chemical oxygen demand, and, in some cases, biochemical oxygen demands were determined. Raw sewage, but mainly the effluent following physical-chemical treatment, was examined for improvement in discharge quality by ozone treatment in combination with oxygen sparging, ionizing gamma radiation from /sup 60/Co heating, acidifying, and several other variables. The average composition of the raw sewage was a TOC of 125 ppM (range from 65 to 240), COD of 190 ppM (range from 85 to 475), turbidity of 145 J. U. (range from 60 to 350), and pH of 7.3 (range from 6.5 to 8.4). Physical chemical treatment usually consisted of the addition of CaO (to pH 11) and FeCl/sub 3/ as a coagulant aid in an inclined tube followed by course filtration; typical treatment time was 15 minutes giving an average reduction in TOC and COD of 40 to 60%. Subsequent treatment was usually performed with 200 cm/sup 3/ samples of the effluent in fine and course fritted bubblers. The combination of radiation plus ozone gave the largest reduction of TOC and COD. In one experiment, 15 minutes of treatment followed by 30 minutes of irradiation and ozonation reduced the raw sewage TOC from 95 to 14 ppM carbon and COD from 150 to 6 ppM oxygen. (auth)
- Research Organization:
- Brookhaven National Lab., Upton, N.Y. (USA)
- NSA Number:
- NSA-29-024397
- OSTI ID:
- 4336648
- Report Number(s):
- BNL-18423; CONF-731211-2
- Resource Relation:
- Conference: 1. international symposium and exposition on ozone for water and wastewater treatment, Washington, District of Columbia, USA, 2 Dec 1973; Other Information: Orig. Receipt Date: 30-JUN-74
- Country of Publication:
- United States
- Language:
- English
Similar Records
Non-biodegradable landfill leachate treatment by combined process of agitation, coagulation, SBR and filtration
Simultaneous evaporation and advanced oxidation processes (AOP) for process water treatment