This powerpoint presentation begins by providing interesting facts concerning toxin removal and then examines several arsenic removal technologies and their residuals concerns, including: Ion Exchange - brine regenerant on-site disposal,
highly concentrated liquid waste,
non-selective technology - co-contaminants;
Granular Iron/Titanium Media Systems (GIMS) - local attrition losses,
backwash creates on-site discharge,
saturated media disposal at local landfill,
As concentration drives waste volume;
Reverse Osmosis Concentrated liquid waste - local discharge;
Coagulation/Filtration - local arsenic laden residuals created,
landfill or local discharge;
Titanium/Zeolites - local attrition losses,
backwash creates on-site discharge,
saturated media disposal at local landfill; and,
Regenerable Media - off-site residuals disposal, vendor return. Two phases of residuals are presented and include: Liquid Phase Residuals -
brines, concentrates, backwash, rinse water, pre-treatment
chemicals and attrition particles; and,
Solid Phase Residuals -
spent media, membranes, filters, dewatered sludge. Regulatory aspects are outlined, along with arsenic leaching, residuals assessment tests, solid media leaching, residuals minimization, and theoretical treatment/wasting scheme. Includes tables, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 810 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 31 |
| Published : | 06/01/2007 |
