air pollutin control 1

AIR POLLUTION AIR POLLUTION CONTROLCONTROL

NATURAL ATMOSPHERIC CLEANING NATURAL ATMOSPHERIC CLEANING PROCESSPROCESS

DISPERSION – DISPERSION – REDUCES THE CONCENTRATION OF REDUCES THE CONCENTRATION OF POLLUTANTS IN ANY ONE PLACE.POLLUTANTS IN ANY ONE PLACE.

GRAVITATIONAL SETTELING GRAVITATIONAL SETTELING

FLOCCULATION AND AGGLOMERATIONFLOCCULATION AND AGGLOMERATION

ABSORPTIONABSORPTION

ADSORPTIONADSORPTION

PHOTOSYNTHESISPHOTOSYNTHESIS

AIR POLLUTION CONTROL AIR POLLUTION CONTROL STRATEGIESSTRATEGIES

AIR QUALITY MANAGEMENT AIR QUALITY MANAGEMENT STRATEGYSTRATEGY

EMISSION CONTROL STRATEGYEMISSION CONTROL STRATEGY

FINANCIAL INCENTIVE STRATEGYFINANCIAL INCENTIVE STRATEGY

COST BENEFIT STRATEGYCOST BENEFIT STRATEGY

ENGINEERING CONTROL CONCEPTSENGINEERING CONTROL CONCEPTS

CHANGE OR MODIFY THE DESIGN OF THE CHANGE OR MODIFY THE DESIGN OF THE WHOLE OR PART OF THE PROCESSWHOLE OR PART OF THE PROCESS

CHANGE OR MODIFY THE OPERATING CHANGE OR MODIFY THE OPERATING CONDITION OF THE PROCESSCONDITION OF THE PROCESS

CHANGE OF RAW MATERIAL AND FUELCHANGE OF RAW MATERIAL AND FUEL

INSTALL APPROPRIATE POLLUTION REMOVAL INSTALL APPROPRIATE POLLUTION REMOVAL DEVICES OR SYATEMDEVICES OR SYATEM

CONTROL DEVICES & SYSTEMCONTROL DEVICES & SYSTEM

POLLUTANTS CONTROL DEVICES/SYSTEM

PARTICULATE MATTERS

•GRAVITY SETTLER•CYCLONE SEPARATOR•ELECTROSTATIC SEPERATOR•SURFACE FILTER•DEPTH FILTERS•SCRUBBER


A. GRAVITY SETTLER

- A LONG CHAMBER THROUGH WHICH CONTAMINATED GAS PASSES SLOWLY AND THE PARTICLES ARE SETTLED AT THE BOTTOM BY GRAVITY

CONTROL DEVICES & SYSTEMCONTROL DEVICES & SYSTEMB. CYCLONE SEPARATOR

- THE GAS ENTER SIPRALS AROUND THE OUTER PART OF CYLINDRICAL BODY

- IN THE SPIRAL , SOLID PARTICLES ARE DRIVEN TO THE WALL AND ATTACH TO EACH OTHER, FORMING AGGLOMERATES.

- THE LARGER AGGLOMERATE SLIDES DOWN AND IS COLLECTED.


C . ELECTROSTATIC SEPARATOR

- FOR PARTICLES BELOW 5 MICROMETER

- PARTICLES GET CHARGED AND ATTRACTED TO THE WALL ELECTROSTATICALLY

- THE PARTICLES AGGLOMERATE AND IA COLLECTED.

CONTROL DEVICES & SYSTEMCONTROL DEVICES & SYSTEMD . SURFACE FILTERS

- CAN BE A PIECE OF CLOTH, WIRE MESH OR FILTER PAPER WITH HOLES SMALLER THAN THE DIMENSION OF PARTICLES TO BE RETAINED

- THE PARTICLES COLLECT IN THE FORM OF DUST ON THE SURFACE

- FOR INDUSTRIAL, THE GAS FILTER IS GENERALLY CALL BAG HOUSE.


E . DEPTH FILTER- THE MECHANISM OR

OPERATION IS LIKE A CIGARETTE FILTER

F . SCRUBBER- THE DIRTY GAS IS

WETTED WITH A WETTING LIQUID AND THE PARTICLES BECOME HEAVY AND CAN BE REMOVED.



SULPHUR OXIDES

• GAS ABSORPTION AND STRIPPING•SODA SCRUBBING•OTHER ALTERNATIVES



NITROGEN OXIDES

• LOW NOX COMBUSTION TECHNOLOGY •DENITRIFICATION TECHNOLOGY

ACID GASES • WET SCRUBBING



TOXIC GASES • THERMAL COMBUSTION• CATALYST AND SELECT REAGENTS.• ADSORPTION•ABSORPTION

ODOUR • MODIFICATION OF PROCESS•ADSORPTION•COMBUSTION•ODOUR MASKING•INJECTING SUBSTANCES

MOBILE SOURCE CONTROLMOBILE SOURCE CONTROL- CAN BE CONTROLLED THROUGH VARIOUS METHOD.- THE MAIN METHOD USED CATALYTIC CONVERTERS.- REDUCE POLLUTION FROM MOBILE SOURCE ARE BY a. DESIGNING ENVIRONMENTAL b. FRIENDLY VEHICLES c. USING LESS POLLUTING FUEL SUCH LPG AND FUEL TECHNOLOGY

MONITORING AIR POLLUTIONMONITORING AIR POLLUTION

OBJECTIVE

a.TO ENSURE COMPLIANCE WITH ENVIROMENTAL REGULATIONSb.AS A MANAGEMENT TOOL FOR POLLUTION STRATEGYc.FOR RESEARCH AND DEVELOPMENT


AMBIENT AIR SAMPLING

a.TYPES OF

SAMPLING

a. EXTRACTIVE METHODb. IN-SITU MONITORINGc. REMOTE SENSING



b. AMBIENT MONITORING

OF PARTICULATE

MATTER

- AIRBORNE PARTICULES ARE COMMONLY COLLECTED USING A 20 CM BY 25CM RECTANGULAR SHEET OF GLASS FIBER FILTER MEDIA HELD ONTO A SUPPORT SCREEN AND CONNECTED TO A HIGH VOLUME VACCUM PUMP FOR DRAWING SAMPLES

- FOR PARTICLES BELOW 10 MICROMETER, THE PM 10 SAMPLER IS USED TO COLLECT FINE PARTICLES.



b. AMBIENT MONITORING OF GASEOU

POLLUTANTS

- ABSORPTION TRAIN - IMPREGNATED FILTERS - DIFFUSION TUBES - SOLID ADSORBENT TUBE - GRAB SAMPLING

REGULATION RELATED AIR REGULATION RELATED AIR POLLUTIONPOLLUTION

ENVIROMENTAL REGULATION IN MALAYSIA

a. ENVIROMENTAL QUALITY CLEAN AIR REGULATION 1978

b. ENVIROMENTAL QUALITY ( CONTROL OF LEAD CONCENTRATION IN MOTOR GASOLINE REGULATION 1985

c. ENVIROMENTAL QUALITY (MOTOR VEHICLE NOISE ) REGULATION 1987

REGULATION RELATED AIR REGULATION RELATED AIR POLLUTIONPOLLUTION

ENVIROMENTAL REGULATION IN MALAYSIA

E. ENVIROMENTAL QUALITY (PROHIBITION ON THE USE OF CHLOROFLUOROCARBONS & OTHER GASES AS PROPELANTS & BLOWING AGENTS ) ORDER 1993

air pollutin control 1

Documents