Reducing dust emissions

13. November 2014

Air thickness in India

Aerosols, suspended dust, and fine particulates are three important things when it comes to pollution control and emission reduction. The smaller the dust particles, the worse the effect on health. In India, there’s a lot of dust. This is why the country took the decision to significantly reduce these emission levels with as little impact on the cost to the national economy as possible.



In a similar way to the European carbon trading scheme, the Indian state institutions are taking an approach of the particulate emissions trading. The pilot project of “particulate emissions trading” scheme is supported by the UN and will be launched in 2015, starting with the three Indian federal states Gujarat, Tamil Nadu, and Maharashtra. These states are home to the 15 most polluted regions in India. More than 1,000 companies have been chosen to monitor their emissions in these states.


According to J. S. Kamayota (member of the Central Pollution Control Board), there were two aspects to consider at the first conference “Innovative Monitoring & Abatement Technologies for Emission”: “Firstly, the emissions standards for the individual sectors of industry must be defined. Secondly, it is necessary to ensure that industry actually complies with these standards.”

Emissions are to be measured continually to make sure that the standards are being observed. Detailed regulations have been created to this end, and these even cover aspects such as transferring the emissions data to the authorities.




Frank Hehl, Head of Process Automation at SICK, stated that exhaust gases must be measured correctly in order for these emission reduction measures to be successful. Given the importance of measured values for emissions trading, all parties involved must ensure that the results they produce are reliable. In Europe, this can be achieved by using measuring instruments that have undergone suitability testing and by continually validating the results using regular comparative measurements.

The General Manager of NTPC – one of India’s largest power plant operators – has pointed out that smaller and medium-sized operations in particular are heavily dependent on energy that is generated locally using diesel generators. It is here that particle emissions generate large amounts of critical exhaust gases, as well as sulfur oxide and nitrogen oxide, in regions that are often densely populated.

Sensors from SICK support particulate emissions trading

The dust emissions trading scheme therefore aims to pinpoint smaller and medium-sized polluters and achieve the best possible results using the limited funding by implementing market-driven reduction measures. The SICK partner Chemtrols has the knowledge and technical capacity that is needed to provide the best possible support to India’s particulate emissions trading scheme, using complete solutions that incorporate SICK sensor technology.


DusthunterIt all started 50 years ago with the first smoke density measuring device. Since then, SICK has become a respected name all around the globe in the field of dust monitoring. The instruments are built to be extremely reliable, use highly precise optical measuring techniques, and contain components that automatically compensate for errors caused by the installation conditions. All of this results in a high level of measurement accuracy and exceptionally long maintenance intervals. Regardless of the environmental standard being used in the measurement, and whether there is a high or low dust concentration, the measuring conditions are simple or difficult, or the application involves corrosive or hot flue gases, SICK can provide a DUSTHUNTER dust monitor to suit every situation.


  • Customer information: Chemtrols Industries Ltd. was founded in 1975 and is a SICK partner for process automation solutions in India. Tracing its origins back to process controls in the chemical industry, Chemtrols is now one of the leading solution providers in process analytics, environment and emissions monitoring, flow and terminal automation, process instrumentation, steam engineering, and utility management systems. As a specialized service provider, they cater to various industries, such as cement, steel, oil and gas, energy, fertilizer, and chemicals and petrochemicals.



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