biosolid การใช้

• In 2007 toxic PCBs were detected in the biosolid product Milorganite, donated to the City of Milwaukee and subsequently applied on city parkland.
• The conventional methods of waste disposal create 7 million tons of dry biosolid per year, which is usually dumped into landfills or turned into mulch.
• Studies have indicated that pharmaceuticals and personal care products, which often adsorb to sludge during wastewater treatment, can persist in agricultural soils following biosolid application.
• These analysis detected 55 of the 87 organic chemicals measured in at least one of the nine biosolid samples, with as many as 45 chemicals found in a single sample.
• The brochure cited a study showing animals that ingested " biosolid-treated soil and dust may have a decreased absorption of lead into the bloodstream, thus lessening the potential for lead-induced nerve and brain damage ."