PURE SKIES 

Air pollution control equipment for thermal power plants.

Case Study

TM

PROFIT

What we did:

 

Pure Skies air pollution control equipment reduced PM2.5 and PM10 about 57% and 40%, respectively, at a 2000 MW thermal power plant.

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One of Devic Earth’s partners, a 2000 MW coal thermal power station, wanted to improve ambient air quality at one of their plants. The plant was already equipped with the latest air pollution control equipment and followed best practices for managing fugitive emissions.

 

Despite these measures, air quality measured inside the plant inside was poor. Particulate matter – PM2.5 and PM10 – were 101 and 215μg/m3, respectively, averaged over one week. This is much higher than what is recommended by the National Ambient Air Quality Standards (PM2.5 < 60 μg/m3 & PM10 < 100 μg/m3) and 5 to 10 times higher than standards of the World Health Organization..

Employees were exposed to high levels of harmful pollutants which would impact their health and productivity.

The problem:

 

Anyone working in a thermal power plant knows that air quality often suffers. These plants generate significant amounts of pollution that affect the well-being of workers at the plant, the plant’s residential colony, as well as surrounding communities.

The solution:

 

Two Pure Skies 9000 systems were installed inside the Plant. The installation consisted of two Pure Skies base station, extenders, and two third party air quality monitors (Airveda Pvt. Ltd., Gurgaon).

The system was configured to handle particulate pollutants (PM10 and PM2.5) and common pollutant gases (NOx, SOx) across the entire campus of the plant – approximately 250 acres. 

 

Outdoor air pollutant levels were monitored continuously at appropriate locations inside the campus to help the customer understand the efficacy of Pure Skies, as well as to provide real-time data for optimizing the smart technology in each Pure Skies unit.

 

For comparison, a reference monitor run by the state pollution control board located about 3.5 km away was used as the comparison monitor, outside the Pure Skies zone of influence.

Installation technical details:

 

It took just one day to complete the installation. Two base stations, extenders, and two air quality monitors were installed on various building rooftops. No floor space in worker areas was required. Equipment was plugged in and connected wirelessly to the local GSM data network in the area (BSNL).

 

Power requirements: Routine power supply (ordinary 10A sockets). Each base station and air quality monitor is equipped with battery backup (rarely needed in a power plant).


Once online, the performance of each air pollution control unitis monitored 24x7 by Devic Earth.

 

Pure Skies' built in smart technology allows each unit to understand air quality patterns at its location and optimize its output accordingly.

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The outcome:

 

After Pure Skies was powered On, a steady improvement was observed in the air quality (Figure 1). In comparison, reference grade monitors operated by the state pollution control board approximately 3 km away (out of the Pure Skies zone of influence) showed relatively stable values during this time.

Figure 1: Improvements in air pollution levels with Pure Skies at a thermal powerplant. The red and green bars are the Pure Skies-Off (7-days) and Pure Skies-On periods (7-days), respectively. The successive green bars depict the incremental decrease in the levels of the pollutants over 7-day intervals. Data source: 3rd party air quality monitor (Airveda Pvt. Ltd.), pre-calibrated against a reference-grade monitor.

Pure Skies is a state-of-the-art technology that ensured that the employees working in the plant breathed clean air at work.

What’s the value of cleaner air to you and your plant?
Reduced sick days
 
Cleaner air means a stronger immune system. A study from several of Devic Earth’s customers showed sick days reduce by 11-13% year-on-year after installing Pure Skies!
Better productivity
 
Worker productivity drops by 1% for every increase in PM2.5 levels by 10 mcg/m3, according to researchers from Columbia University. For a typical factory with PM2.5 levels averaging 90-100 mcg/m3, that’s like watching productivity drop by 5-6%!
Better profitability!
 
Improving air quality index (AQI) to less than 50 improves the productivity of employees by 5-6%, which in turn increases the profitability of the company by 1%, according to a study published in the Harvard Business Review.
If that’s not good business sense, then we don’t know what is!

PROFIT

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