Various laws in Japan regulate and set standards for mercury. The following is a list of relevant, domestic standards:
Types of Standards |
Total Hg |
Alkyl mercury compounds |
Standards for disposal of domestic wastes and industrial wastes in landfill site (leachate-controlled type) |
<0.005mg/L |
Not to be detected |
Standards for discharge of effluent from final landfill site: |
||
a. Hg in effluent b. Hg in surrounding groundwater |
<0.005mg/L <0.0005mg/L |
Not to be detected Not to be detected |
Standards for atmospheric emission *1 |
||
a. Waste incinerator b. Incinerator for sludge which contaminated by mercury |
50㎍/Nm3 100㎍/Nm3 |
Not set Not set |
Standards for working environment |
<0.025mg/m3 *2 |
<0.01mg/m3 *3 |
*1
*2 Excluding mercuric sulfide (HgS).
*3 Limited to ethyl and methyl compounds.