air pollutin control 1

AIR AIR POLLUTION POLLUTION CONTROLCONTROL

NATURAL ATMOSPHERIC NATURAL ATMOSPHERIC CLEANING PROCESSCLEANING PROCESS

DISPERSION – DISPERSION – REDUCES THE REDUCES THE CONCENTRATION OF POLLUTANTS IN ANY CONCENTRATION OF POLLUTANTS IN ANY

ONE PLACE.ONE PLACE.

GRAVITATIONAL SETTELING GRAVITATIONAL SETTELING

FLOCCULATION AND AGGLOMERATIONFLOCCULATION AND AGGLOMERATION

ABSORPTIONABSORPTION

ADSORPTIONADSORPTIONPHOTOSYNTHESISPHOTOSYNTHESIS

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 ENGINEERING CONTROL CONCEPTSCONCEPTS

CHANGE OR MODIFY THE DESIGN OF CHANGE OR MODIFY THE DESIGN OF THE WHOLE OR PART OF THE PROCESSTHE WHOLE 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 CHANGE OF RAW MATERIAL AND FUELAND FUEL

INSTALL APPROPRIATE POLLUTION INSTALL APPROPRIATE POLLUTION REMOVAL DEVICES OR SYATEMREMOVAL DEVICES OR SYATEM

CONTROL DEVICES & SYSTEMCONTROL DEVICES & SYSTEMPOLLUTANTS CONTROL DEVICES/SYSTEMPARTICULATE MATTERS

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

CONTROL DEVICES & SYSTEMCONTROL DEVICES & SYSTEM

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.

CONTROL DEVICES & SYSTEMCONTROL DEVICES & SYSTEMC . 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.

CONTROL DEVICES & SYSTEMCONTROL DEVICES & SYSTEME . 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.

CONTROL DEVICES & SYSTEMCONTROL DEVICES & SYSTEMPOLLUTANTS CONTROL DEVICES/SYSTEM

SULPHUR OXIDES • GAS ABSORPTION AND STRIPPING•SODA SCRUBBING•OTHER ALTERNATIVES

CONTROL DEVICES & SYSTEMCONTROL DEVICES & SYSTEMPOLLUTANTS CONTROL DEVICES/SYSTEMNITROGEN OXIDES

• LOW NOX COMBUSTION TECHNOLOGY •DENITRIFICATION TECHNOLOGY

ACID GASES • WET SCRUBBING

CONTROL DEVICES & SYSTEMCONTROL DEVICES & SYSTEMPOLLUTANTS CONTROL DEVICES/SYSTEMTOXIC 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

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