EPD - Pollution Problems & Practical Solutions

Demolition
Pollution Type
Air
Problem
Dust
Relevant Env. Control Air Pollution Control (Construction Dust) Regulation, Cap. 311R requires the relevant contractor to adopt effective dust control measures.
Practical Solutions
Enclose the building with impervious dust screens

Wet the working area prior to, during and after demolition

Enclose the building to be demolished with tarpaulin
Enclose the building to be demolished with tarpaulin
   
Pollution Type
Noise
Problem
-
Relevant Env. Control Under the Noise Control Ordinance, Cap. 400, use of Powered Mechanical Equipment (PME) and Prescribed Construction Work (PCW) are not allowed from 7pm to 7am on the next day or anytime on public holidays, including Sundays.
Practical Solutions
Restrict noisy works and use of noisy equipment, e.g. concrete breaking by excavator-mounted breaker, to less sensitive hours of the day

Use Quality Powered Mechanical Equipment (QPME) type equipment

Use non-percussive equipment for demolition and concrete breaking works

Fit muffler and silencer to noisy machines

Use hydraulic crusher for demolition
Use hydraulic crusher for demolition
 
Use wire saw for concrete cutting
Use wire saw for concrete cutting
 
Wrap excavator-mounted hydraulic breaker with noise absorbent
Wrap excavator-mounted hydraulic breaker with noise absorbent

 
   
Pollution Type
Waste
Problem
Fly-tipping
Relevant Env. Control Under the Waste Disposal Ordinance, Cap. 354, it is prohibited to dump waste in public places or on Government land, or on private premises without the consent of the owner or occupier.
Practical Solutions
Implement selective demolition and on site sorting

Implement trip ticket system to keep track of waste disposal

Demarcation of temporary storage area for sorted material
Demarcation of temporary storage area for sorted material
 
On site segregation of concrete debris
On site segregation of concrete debris
 
On site segregation of reinforcement
On site segregation of reinforcement