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As we all know, the paint residue produced by the use of paint and its associated contamination (paint buckets, rags, etc.) in production is subordinate to dangerous waste. Not only is it expensive to dispose of (approximately
8K-1.5K/
tons), but it is difficult to clear, and due to
VOCs
emission limits, some urban areas have completely shut down the relevant production lines. Therefore, water-like paint and other alternative processes began to occupy the market
China
. So, water-like paint applications produced by waste water, paint slag is dangerous waste? What should I do about it?
question one: Is water-like paint residue dangerous?
according to
2016
August
, the National Hazardous Waste Directory (
2016
edition) pointed out that
HW12
dyes, paint waste.
1
,
264-011-12
other inks, dyes, pigments, paints (excluding water-like paint) produced during the production process of wastewater treatment sludge, waste adsorbents.
2
,
264-012-12
using paint (excluding water-based paint), organic solvents to block waste generated during coating.
3
,
900-252-12
use paint (excluding water-based paint), organic solvents for painting, waste generated during painting to block waste generated during coating.
according to this article: water-based paint residue is not dangerous solid waste. Other paint residue should be hazardous solid waste.
question two: Is the water-like paint bucket dangerous?
paint barrels are generally classified as
900-041-09:
,
according to
"900-04
1-49
waste packaging containing or contaminated toxic, infectious hazardous waste, containers, filter adsorption media . Since water-related paint residue is not dangerous waste, then its contamination (water-related paint bucket) is not dangerous waste.
question three: Since it is not dangerous waste how to deal with?
1
, the advantage of water-based coatings is
VOCs
emission reduction, but it is still paint, is a chemical, the composition and oily coatings inside there is no qualitative change, or resins, pigments, additives, solvents and so on. If a new enterprise has a water-based paint production line, it shall be equipped with special water-based paint wastewater treatment equipment, and the waste water shall be discharged according to regulations after meeting the standards.
its enterprise environmental assessment of the relevant paint slag and contaminated materials classified as general industrial solid waste, need to be qualified for general industrial solid waste disposal units to deal with.
2
, original application paint production line enterprises, process changes, should be re-evaluated. The original application of water-based paint enterprises, due to catalog changes, need to carry out non-critical identification, access to the environmental protection department approved units of the assessment report, to the Environmental Protection Bureau for the record of changes, can be non-critical disposal.
from paint is a clear part of the National Hazardous Waste
HW12
types of hazardous wastes shall be managed and disposed of in accordance with hazardous wastes. The State clearly stipulates that enterprises or units that produce such waste shall, as required, declare the type, quantity and where they are going to produce hazardous waste, and must take effective measures such as impermeability and leakage prevention for temporary storage and hand it over to units with hazardous waste operating permits for centralized and harmless treatment.
: The difference between water-like paint and oily paint in environmental protection.
water-based paint is water-based dilution solvent, ultra-low
VOCs
content (below the national
200mg/L
mandatory standard) and are truly non-toxic and tasteless high-tech environmentally friendly products. Oily paint with organic solvents (banana water, water) as a thinner, its products contain benzene, toluene, xylene and its derivatives, plus polyester paint also need to use curing agents (including
TDI
), so polyester paint is the most toxic, and nitro paint toxicity is second. Water-like wood paint because of non-toxic tasteless, environmental protection and safety; And oily paint because its organic solvents will be in the drying process of the wave of harmful gases, so, the use of oily paint decoration of the house, generally can not be applied after the direct stay, need to wait for a period of isolation time.