In Denmark there are three different schemes for collecting batteries. Since 1990, all municipalities have been obliged to collect household hazardous waste. In Japan only NiCd batteries are required by law to be collected. Notifying the rules is easy. Ensuring they are followed, on the streets, in the backyards where smelting is actually done, is another ballgame altogether.
Monitoring is the key here.
As of today, innumerable illegal smelting units exist. Checking and monitoring them, ensuring adherance to the rules will be a a Herculean task for the authorities. All of the 60,000 metric tonnes which is currently smelted illegally. Standing in a vaccum The rules talk of monitoring pollution, implying the presence of enforceable standards to compare transgressions with. Monitoring is pointless in a vaccum of comparative data.