Scheduled Waste Management
Pentas Flora’s proactive team of certified environmental professionals in Scheduled Waste Management continuously conduct audit and provide solutions to clients on the following categories:
- Identification and classification of unknown wastes
- Consultation & solution conceptualization to establish the waste specification and how to further deal with it.
- Pentas Flora’s qualified chemist will identify unknown chemical items and arrange representative waste transporter for treatment and recovery when its necessary.
- Discerning the total waste pathway from point of generation to consolidation, transportation, recovery, treatment and final disposal.
- Our extensive experience in the waste management and environment industry enables us to provide expertise in all facets of waste management process.
Definition of Waste
Any discarded solid, liquid or contained gas or material that we can no longer use (unwanted material).
Definition of Scheduled Waste
Any matter prescribed to be scheduled waste or any matter whether in a solid, semi-solid or liquid form, or in the form of a gas or vapor that we can no longer used, which emitted, discharged or deposited in the environment in such volume, composition or manner as to cause pollution.
In Malaysia, therefore, a material only become waste at the point at which it is emitted, discharged or deposited and then only if it causes pollution. It could thus be waste or may not be waste if it is managed in a manner so as to cause no pollution.
A waste is classified as hazardous based on its four characteristic. A waste is considered hazardous if it has one or more of the following characteristic:
- If the waste is a liquid and has flash point less than 60°C (140°F) as determined by Pensky-Martens closed cup tester or a setaflash closed cup tester.
- If the waste is not a liquid but is capable under standard temperature and pressure, of causing fire through friction, absorption of moisture or spontaneous chemicals changes and when ignited, burns so vigorously persistently that it creates hazard.
- It is intangible compressed gas, e.g.: LPG.
- It is an oxidizer.
- If the waste has an aqueous component and has a pH less than or equal to 2, or greater than or equal to 11.5 as determined by an approved/calibrated pH meter or;
- If the waste has liquid component and corrodes steel (SAE 1020) at a rate greater than 6.35 mm (0.250 inch) per year at test temperature of 55°C (130°F).
- If the waste is normally unstable and readily undergoes violent changes without detonating.
- If the waste reacts violently with water.
- If the waste forms potentially explosive mixtures with water.
- If the waste when mixed with water generates toxic gases, vapours or fumes to cause danger to human health or the environment.
- Ability to spread disease or illnesses through bacteria, virus, fungus or other microorganism.
"Any waste failing within the categories of waste listed in the First Schedule"
List of waste types is divided in five parts:
- Group 1 : SW1 – Scheduled wastes from metal and metal – bearing wastes.
- Group 2 : SW2 – Scheduled wastes from the wastes containing principally inorganic constituents which may contain metals and inorganic materials.
- Group 3 : SW3 – Scheduled wastes from wastes containing principally organic constituents which may contain metals and inorganic materials.
- Group 4 : SW4 – Scheduled wastes from wastes which may contain either inorganic or organic constituents.
- Group 5 : SW5 – Scheduled wastes from other wastes.
Treatment and Disposal of Scheduled Wastes
The main types of facilities
a) Recovery or Recycling Facilities
- Solvent, oil, acids or metals
b) Treatment facilities
- Physical, chemical, thermal or biological method
c) Land disposal facilities
- Secure landfill
d) Fully Integrated Facility
- Physical/chemical treatment, recovery, stabilization, incineration and land disposal (secure landfill)
Reuse: Use of a waste for the original or another purpose without pre-treatment or processing
Recycling: Reuse of a waste after some processing
Recovery: Extraction of useful material of energy which may use which may use be reused
Treatment: Processing to reduce the hazardous properties of a waste
Disposal: Final disposal of the waste by handling
|Recovery Process||Waste Types||Recovered Oil|
Oil Water Separation
a) Mineral Oil
Oil reused as fuel supplement
Waste oil after oil-water separation
Oil reused for general purposes
- Burning waste oil as fuel can lead to unacceptable emissions
- Fuel blending may improve emissions
- Cement kilns offer a good combustion environment
- Waste oil may also be used as
- Timber preservative
- Low grade grease or lubricant
Types of water solvent:
- white spirit
- iso-propyl alcohol (IPA)
- methyl ethyl ketone (MEK)
- dimethyl formamide (DMF)
- trichlorethylene (TCE)
|Recovery Process||Waste Types||Recovered Solvents|
Oil Water Separation
Use in low grade paint
Mainly white spirit
|Recovery Process||Waste Types||Recovered Metals|
|Metal precipitation||Electroplating wastes||Cr, Cu, Al, Zn, Cd, Ni|
|Ion exchange||Electroplating wastes||Cr, Cu, Al, Zn, Cd|
|Electronic metal recovery||Photo-finishing wastes||Silver|
|Spent Catalyst||Ni, Cr, Pt, Pd, Cu|
|Electronic wastes||Precious metals|
- Product is still scheduled waste
- Exportation of product requires export permit from DoE (Basel Convention procedures)
- Precious Metal Recovery (Electrolysis, smelting)
- Product is not scheduled waste
- Exportation of product does not require export permit
Cyanidation, amalgamation, acid leaching
Precious metals only
Base metals, precious metals & rare metals
- Physical and Chemical Treatment (PCT)
- Wet air oxidation
- Reverse osmosis
- Land treatment
Scheduled Waste Minimisation
- A requirement of regulation 6 of the Scheduled Waste Regulations
- Not a simple technique
- Each factory is different
- More an attitude of mind
- Commitment of management essential
Scheduled Waste Utilisation
- Alternative to SWM in Malaysia apart from treatment, recovery and disposal at prescribed premises or on-site treatment
- Under Special Management of SW, Regulation 7, of Environmental Quality (Scheduled Wastes) Regulation 2005
- Application for Special Management must be in accordance with the stipulated guidelines
- Processing fee RM300
- DG of DOE may grant written approval either with or without conditions