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Chemical Waste Control in Hong Kong

Chemical Waste Control in Hong Kong. Major Hazardous Properties of Chemical Waste. Flammable Toxic Corrosive Oxidizing. Handling/Disposal of Chemical Waste Before Control. Minority: co-disposal at landfill under controlled manner Majority: indiscriminate disposal into sewers,

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Chemical Waste Control in Hong Kong

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  1. Chemical Waste ControlinHong Kong

  2. Major Hazardous Properties of Chemical Waste • Flammable • Toxic • Corrosive • Oxidizing

  3. Handling/Disposal of Chemical Waste Before Control • Minority: co-disposal at landfill under • controlled manner • Majority: indiscriminate disposal into sewers, • drains, or together with normal refuse • Problem:

  4. Hazards of Chemical Waste

  5. Implementation of Chemical Waste Control Scheme • Main piece of regulation: Waste Disposal (Chemical • Waste) (General) Regulation under the Waste • Disposal Ordinance • Waste Disposal Ordinance is the main ordinance for • controlling most types of wastes • The Regulation implemented in two phases i.e. Phase • I in end 1992 and full control in mid 1993 • Phase I covers mainly asbestos and tannery off-cuts • which are disposed of at existing landfill • Full control in-line with the commissioning of the • Chemical Waste Treatment Centre

  6. Objectives of Chemical Waste Control • Chemical wastes handled, stored, collected and • disposed of properly • Cradle-to-grave control from waste producer to • disposal facility • Waste producer: registration, proper packaging, labelling and storage of chemical wastes • Collector: controlled through licence, comply with • licence standards • Disposal facility: controlled through licence, comply with treatment/discharge standards

  7. What is Chemical Waste ? • Section 3 of Regulation • (a) Scrap material • (b) Effluent • (c) An unwanted substance or by-product arising • from the application of or in the course of any • process or trade activity • AND specified in Schedule 1 of the Regulation • AND in such a form, quantity or concentration • so as to cause pollution or constitute a danger to • health or risk of pollution to the environment • Household chemical waste exempted • Containers with chemical waste residue is also • chemical waste

  8. Schedule 1 of the CWR • Divided into Part A and Part B • Part A Waste • require prior notification to EPD • need to follow EPD’s direction • very toxic • environmentally persistent • require special disposal arrangement

  9. Part B Waste • no prior notification • common types of waste • organic solvents • acids • alkalis • heavy metals • others

  10. Schedule 1 of the CWR

  11. Booklets http://www.epd.gov.hk/epd/english/environmentinhk/waste/guide_ref/guide_cwc.html

  12. Cradle-to-Grave Control • Trip ticket system employed for control • Each party involved i.e. producer, collector • and disposal facility has its respective legal • responsibilities under the laws

  13. Chemical Waste Control Scheme • Waste Producer • Waste Collector • Waste Disposal Facility

  14. Trip Ticket System • Consignment note in triplicate • Keep track of the movement of chemical waste from • the point of generation to the point of final disposal • Each party fill in the appropriate parts during • consignment of chemical waste • Each party should keep a copy (for at least 12 • months) for future reference if necessary • The collector and disposal facility required to • summarize the trip ticket data in electronic file and • submit to EPD

  15. Trip-ticket System

  16. Trip Ticket

  17. Duties of Waste Producer • Register with EPD as a waste producer • Package chemical waste in proper containers • Label chemical waste containers • Store chemical waste properly • Consign the chemical waste to a licensed collector. • Fill in trip ticket for every consignment and retain • one copy

  18. Registration of Chemical Waste Producers • to identify and locate the various types of waste producers in Hong Kong so that EPD can monitor and ensure that they comply with the legal requirements; and • to maintain a public register of waste producers as required under s.6(2) of the CWR • Information includes :. • The names of producers of chemical waste • the location of the premises where the chemical waste is produced; and • A description of the business or activity in the course of or in connection with which the chemical waste is produced.

  19. Packaging of Chemical waste • Containers should be in good condition and • free from corrosion, contamination, damage • or any other defect • Containers should be securely closed or sealed • In general, different waste types should be in • different containers, especially for incompatible • wastes

  20. For using containers with capacity larger than 450L, • prior approval from EPD required which would be • assessed considering the size, design, leakage control, • alarm system etc. • For wastes in solid and bulky form such as asbestos • waste and PCB contaminated equipment, heavy duty • and leak-proof plastic bags/sheets could be used.

  21. Material of containers should be compatible with the chemical waste to be store • The containers should meet specified performance • standards including drop test, leak proof test, • internal pressure (hydraulic) test and stacking test

  22. Labelling of Containers • Every container should bear an appropriate label

  23. The information entered should be correct and • accurate (i.e. particular risks, safety precautions) • The combined size of the words "CHEMICAL • WASTE" and characters "化學廢物" should not be • less than 1/20th of the area of the label. For the • small-size labels, the minimum size of the characters • should be around 5mm high • The label should be securely attached to the • container and the information could be easily seen • It is recommended to attach two labels on opposite • side of the container

  24. The label should be of appropriate dimensions • The waste code is a general code to indicate the • nature of the chemical waste contained. More • details can be found from EPD’s booklet “A Guide • to the Registration of Chemical Waste Producers”

  25. The hazard symbol is used to indicate the major • hazard of the chemical waste contained • The size of symbol should not be less than one-tenth • of the area of the label and in no case shall it be less • than 500mm2 (i.e. 25mm x 25mm)

  26. Hazard Symbols

  27. Some examples of appropriate hazard symbols

  28. Labelling of Waste

  29. Storage • Stored at a proper area • Best be located within the same premises and close • to the source of waste generation • If not, find another area on the same floor or within • the same building • Used for storage of chemical waste only • Enclosed on at least three sides • Height not less than two meters or the total height of • containers in stack, whichever is the less

  30. Adequate ventilation in the area to prevent • accumulation of dangerous vapor • No connection from the area to any surface drain • or foul sewers • Adequate space within the area for containers • handling by workers • Should not obstruct any means of escape • If not within a building, provided with a roof or • similar covering to prevent rain and reduce heat

  31. The area should be kept clean and dry • For liquid chemical waste, an impermeable floor • or surface (such as epoxy resin) • For liquid chemical wastes, a retention structure • with suitable capacity

  32. Containers of incompatible chemical wastes must not be stored together, and should be stored in different compartments separated by wall or partition

  33. Stacking of containers inside the storage area is • allowed provided that the wall or partition is • impermeable; the stacks are secure so as to • prevent falling; and the containers are stacked • with each of them in the normal upright • position • Each chemical waste storage area should display • a hazard warning panel, notice or marking at • the entrance of the area. Such warning panel / • notice / marking should:

  34. indicate the English words and Chinese • characters “CHEMICAL WASTE” and “化學 • 廢物 ”clearly and boldly in red on a white • background with a letter/character size of not • less than 60 mm high • be securely attached to or worked on a vertical • plane of the storage structure • be weather resistant and rigid • be kept clean and free from obstruction CHEMICAL WASTES 化學廢物

  35. Typical Chemical Waste Storage Area

  36. For small waste producers

  37. Chemical Waste Storage Area

  38. Chemical Waste Storage Area

  39. Collection of Chemical Waste • Collector licensed under the Waste Disposal Ordinance • Submit a duly completed form together with an Operational Plan which provides details of operation including types and no. of collection vehicles/vessels, collection arrangements, staffing, waste handling and emergency response actions etc.

  40. Two types of collection licence i.e. in-house and off-site • In-house licence is for collection of chemical waste produced by the licensee • Off-site licence is for the provision of chemical waste collection

  41. Licensed collector can only collect chemical waste from registered chemical waste producers and deliver the waste to disposal facilities specified in the licence • The collection should be operated in accordance with the licence terms and conditions • Most updated list of chemical waste collectors can be found from EPD’s website at http://www.epd.gov.hk/epd/english/environmentinhk/ waste/guide_ref/ref_cw.html

  42. Collection Vehicle/Vessel • The collection vehicle/vessel should be equipped with • fire extinguishers • Tremcards (Transport Emergency • Card) of the chemical wastes being • carried

  43. Bear the following warning panels at the front and rear of the vehicle or on each side of the vessel • Each panel shall have a black border in yellow background. Words shall be at least 60 mm high.

  44. A “NO SMOKING 不准吸煙” notice with the English capitals and Chinese characters at least 60 mm high shall be prominently displayed on each side of the vehicle/vessel • This instruction shall be complied with by the driver or transport personnel during the collection operation

  45. Typical Collection Vehicle

  46. Disposal of Chemical Waste • There are two types of disposal facilities i.e. in- house and off-site • In-house disposal facilities can only treat those chemical waste produced by the licensee. Mainly found in factories producing large quantities of chemical wastes such as bleaching & dyeing, electroplating • Off-site disposal facility can treat chemical wastes produced by other chemical waste producers. The largest one is the Chemical Waste Treatment Centre at Tsing Yi

  47. Chemical Waste Treatment Centre (CWTC)

  48. Another government facility is the SENT landfill, which mainly accepts solid chemical wastes • Other off-site facilities are mainly recycling plants i.e. recycle spent oil, recover precious metals form electroplating solutions or photofinishing waste • Disposal facility can only receive chemical wastes from a licensed collector • The disposal facility should be operated in accordance with the licence terms and conditions.

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