The Company has complete in house
facility to execute various jobs related to environmental services
Delhi test house provide full service environmental consulting and testing services to municipal, industrial, household and private concerns. Our team of professional engineers, analysts and specially trained technical personnel, has the experience and knowledge to address all environmental issues in an uncomplicated, competent and professional manner. DTH is a recognized provider of environmental services with the highest quality. It is a recognized lab and consultancy organization from ministry of environment and forests and various state pollution control boards. It offers specialized services for all components of environmental concerns.
Specialties of DTH in the field environmental services
- For ISO-14001 CERTIFICATION
- STATE POLLUTION BOARDS
- EIA CLEARANCE
- ENVIORNMENTAL CONSCIOUSNESS
Environmental Impact Assessment Monitoring
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INDOOR AIR QUALITY
- MONITORING
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STACK EMISSION
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NOISE LEVEL MONITORING
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LIGHT INTENSITY
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AMBIENT AIR MONITORING
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Air Monitoring
DTH not only take up the monitoring of ambient air in normal urban conditions but also takes the challenges of conducting these assignments in adverse condition of Himalayan ranges and extremely rural areas of different part of the country.
There are several types of Air pollution and well-known effects of pollution; some are smog, acid rain, the greenhouse effect, and "holes" in the ozone layer. All these conditions have serious implications for our health and well being as well as for the whole environment.
General Tests for Environmental Monitoring
- Ambient Air Monitoring
- Indoor Air Monitoring
- Stack Monitoring
- Fugitive Emission Monitoring
- Noise Level Monitoring
- Effluent Water Testing
- Light Intensity
- Traffic Density Survey
These monitoring covers mainly the Test Methods For Parameters like
SPM ,
RPM
,
Sulphur Dioxide
,
Oxides Of Nitrogen
,
Carbon Monoxide
Types of Ambient Air Pollutants
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Methane & Benzene(Benzene is a hydrocarbon that comes almost entirely from vehicle
Exhausts)
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Particulates (SPM & RPM)-( Particles or PM10 are small airborne particles that can penetrate
Deep into the lung. They come from many sources including sea salt, wind blown soil,
Combustion processes and droplet formation in the atmosphere.
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Polycyclic aromatic hydrocarbons
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Sulphur dioxide(Sulphur dioxide is mainly produced during the burning of coal and oil)
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Nitrogen oxides (Nitrogen dioxide is formed whenever fossil fuels are burnt in air.)
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Carbon Monoxide(Carbon monoxide is the product of incomplete combustion of fossil fuels)
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Ammonia
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Ozone (it protect the earth from harmful ultraviolet light. this gas can irritate the airways of the lungs. It is formed as a secondary pollutant i.e. by the reaction of other pollutants with each other)
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Metals lead, mercury, arsenic etc(Lead was used as a petrol additive, however with the phasing out of this fuel in 2000, ambient concentrations have now dropped significantly)
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1, 3-Butadiene from vehicle exhausts.
Type of Pollutions
SPM: Suspended particulate Matter was carried out by Respriable dust sampler as per guidelines of IS: 5182 and APHA Air. Suspended particulate matter was collected in dust collecting cup. SPM value is determined from the values of volume of air passes through Instrument and the result of dust collecting cup.
RPM: Respriable Particulate Matter was carried out by Respriable dust sampler as per guidelines of IS: 5182 and APHA AIR. Respriable particulate matter was collected on the GF/A Filter Paper. RPM value is determined from the values of volume of air passes through Instrument and the result of GF/A Filter Paper.
Sulphur Dioxide: Sulphur dioxide is absorbed by aspirating a measured air sample through a solution of Potassium or sodium tetrachloromercurate, TCM. This procedure results in the formation of a dichloro susfitq mercurate complex. The Sulphite Ion produced during sampling is reacted with sulphamic acid, formaldehyde and pararosaniline to form an azo dye and then determined colorimetricaly.
Oxides Of Nitrogen: Nitrogen Dioxide in Ambient air is determined by the test method of Emission Regulation (P-III). Nitrogen dioxide is collected by bubbling air through a sodium hydroxide- sodium arsenite solution to form a stable solution of sodium Nitrite. The Nitrite Ion Produced during sampling is reacted with hydrogen peroxide, Sulphanilamide and NEDA to form an azodye and then determined colorimetricaly.
Carbon Monoxide: Carbon Monoxide is determined by IS: 5182 (P-10) [Indicator Tube Method]. Carbon monoxide reduces yellow silicomolybdate to Lower oxides. The color changes from yellowish green to green and finally deep blue depending on the extent of reduction which again under identical conditions depends on concentration of carbon monoxide in air.