Environmental Issues
Waste water generation: The wastewater produced during the chemical processes contains high concentration of chemicals such as bisulfites, sodium carbonate, sodium hydroxide, sodium sulfide, chlorine dioxide, hydrochloric acid, calcium oxide etc which is potentially unsafe to purge directly into the environment.
Sludge by waste water treatment: The significant solid wastes such as lime mud, lime slaker grits, green liquor dregs, boiler and furnace ash, scrubber sludges, wood processing residuals and wastewater treatment sludges are generated from different mills by wastewater treatment.
Greenhouse gas emissions: The major air emissions of the pulp and paper industry come from sulfite mills as recovery gurnaces and burnes, sulfur oxides (SOx), from Kraft operation as reduced sulfur gases and odor problems, from wood-chips digestion, spent liquor evaporation and bleaching as volatile organic carbons (VOCs), and from combustion process as nitrogen oxidies (NOx) and SOx. VOCs also include ketone, alcohol and solvents such as carbon disulfide methanol, acetone and chloroform …show more content…
According to Environment Canada, BOD (Biological Oxygen Demand) tests are needed to be done at least three times a week for each outfall structure discharging directly to the environment and TSS (Total Suspended Solids) tests should be done every day for each outfall structure discharging directly to the environment. Any exceedance of maximum limits needs to be reported to Environment Canada without any delay. For Acutely lethal effluents, the tests need to be conducted using rainbow trout once a month for each outfall structure discharging directly to water using Environment Canada’s Reference
Waste water generation: The wastewater produced during the chemical processes contains high concentration of chemicals such as bisulfites, sodium carbonate, sodium hydroxide, sodium sulfide, chlorine dioxide, hydrochloric acid, calcium oxide etc which is potentially unsafe to purge directly into the environment.
Sludge by waste water treatment: The significant solid wastes such as lime mud, lime slaker grits, green liquor dregs, boiler and furnace ash, scrubber sludges, wood processing residuals and wastewater treatment sludges are generated from different mills by wastewater treatment.
Greenhouse gas emissions: The major air emissions of the pulp and paper industry come from sulfite mills as recovery gurnaces and burnes, sulfur oxides (SOx), from Kraft operation as reduced sulfur gases and odor problems, from wood-chips digestion, spent liquor evaporation and bleaching as volatile organic carbons (VOCs), and from combustion process as nitrogen oxidies (NOx) and SOx. VOCs also include ketone, alcohol and solvents such as carbon disulfide methanol, acetone and chloroform …show more content…
According to Environment Canada, BOD (Biological Oxygen Demand) tests are needed to be done at least three times a week for each outfall structure discharging directly to the environment and TSS (Total Suspended Solids) tests should be done every day for each outfall structure discharging directly to the environment. Any exceedance of maximum limits needs to be reported to Environment Canada without any delay. For Acutely lethal effluents, the tests need to be conducted using rainbow trout once a month for each outfall structure discharging directly to water using Environment Canada’s Reference