BackgroundMain article: sewage treatment The treatment process
The treatment process reduces the water content of the sludge. The basic principal is the cleaner the water is after the sludge is removed, the more toxic the sludge is going to be. This has been proven when random samplings of treated sludge are found to be filled with heavy metals, as well as chemical residues that are not removed by the treatment process. The treatment process does not remove 100% of the pathogens, and in many cases pathogen regrowth after spreading is significant.
Benefits of treatment
Treated biosolids can be produced in cake, granular, pellet[1] or liquid form and are spread over land before being incorporated into the soil or injected directly into the soil by specialist contractors.
Controversy
The treatment process reduces the water content of the sludge. The basic principal is the cleaner the water is after the sludge is removed, the more toxic the sludge is going to be. This has been proven when random samplings of treated sludge are found to be filled with heavy metals, as well as chemical residues that are not removed by the treatment process. The treatment process does not remove 100% of the pathogens, and in many cases pathogen regrowth after spreading is significant.
Benefits of treatment
Treated biosolids can be produced in cake, granular, pellet[1] or liquid form and are spread over land before being incorporated into the soil or injected directly into the soil by specialist contractors.
Controversy
No comments:
Post a Comment