Disposing of mercury responsibly

[Anahan]

This is probably the weirdest question I'll ever ask on this forum, but:

Does anyone know where to responsibly dispose of mercury (the heavy metal) in Hong Kong?

The background story:
I decided to get some exercise in my staircase this morning, and found an abandoned mercury switch on the top floor. I guess a very responsible and professional contractor cut it out of some ancient equipment on the rooftop and then just left it in the staircase.

It looks like this: https://en.wikipedia.org/wiki/Mercur...ut_housing.jpg

My moral predicament:
The mercury switch doesn't belong to me and arguably isn't my problem, but the idea of this thing getting buried in the New Territories fills me with sadness and disgust. So, does anyone have any suggestions for how I could responsibly dispose of it? I'm also open to giving it to someone on the forum, provided they have a legit use for mercury (not sure if we have any NileRed fans or chemistry teachers on this board).

Thanks everyone!

[shri]

Found from: https://cd.epic.epd.gov.hk/EPICDI/ch...nload/?lang=en

No clue if they can handle retail / walk in / one item type disposals.

Spent Mercury Lamp/Waste Containing Heavy Metal
Collecter Name Tel No Email Website
1 BAGUIO WASTE MANAGEMENT & RECYCLING LIMITED 25413388 [email protected] Baguio Green Group
2 D.I. ENGINEERING COMPANY LIMITED 26779835 [email protected] D. I. Engineering Co. Ltd
3 DUNWELL ENVIRONMENTAL MANAGEMENT CO. LTD. 23910371 [email protected] www.dunwellgroup.com
4 ECOSPACE LIMITED 24357700 [email protected]
5 HANG YIP (HK) TRADING LIMITED 62183780 [email protected] 恆業(香港)貿易有限公司│首頁
6 KAM MING E.P. ENGINEERING COMPANY LIMITED 24073377 [email protected] Kam Ming E.P.Engineering Co.,Ltd
7 LEUNG KOW KEE TRANSPORTATION COMPANY LIMITED 23885160 [email protected] www.lkk-transport.com.hk
8 NIXON CLEANING COMPANY LIMITED 25630118 Nixon Cleaning Company Limited
9 ON FAT LUNG ELECTRICAL & METAL CO LTD 23900327 [email protected]
10 SHEUNG YIP ELECTRICAL METAL 23929969 [email protected]
11 SPECIALISED ENVIRONMENTAL SERVICES LIMITED 26902787 [email protected]
12 SUN BASE ENVIRONMENTAL SERVICES LIMITED 27979812
13 VANNEX INTERNATIONAL LIMITED 26592334 www.vannex.hk
14 WAYLUNG WASTE SERVICES LIMITED 26537738 [email protected]
15 WING KAI DESTRUCTION & RECYCLE CO. 23422392 [email protected] Home - Wing Kai Destruction & Recycle Co.
16 WING TAT TRANSPORTATION COMPANY 96560113

[Anahan]

In case anyone finds this thread on Google, I was able to just drop off the mercury switch at an e-waste van. I had no idea that HK has a van that goes to different neighbourhoods each weekend and collects old equipment, appliances, fluorescent lights, batteries, etc. Pretty awesome.

You can see where the van will be each weekend here:
https://www.wastereduction.gov.hk/en...wcc_detail.htm