Green technology

AIR POLLUTION CONTROL

  • Electrostatic precipitator

    • Electrostatic precipitators (ESP) come in two options, dry ESP and wet ESP. The first one is used for hot process exhaust gases (50–450 °C) that operate above the dew point of the gas flow and the second one is a special application system that is used to filter wet sticky, tar and oil particles. It can trap more than 100 types of solid particles from 1 micron to 1000 microns and can handle coal as well as more than 50 types of biomass fuel. It is equipped with Opticor® – a fully automatic, advanced digital signal processor (DSP) controller that provides particle emission control for boilers, furnaces, incinerators, liquid wastes, mills, agglomerates, pellets, sponge iron, non-ferrous applications.
  • Baghouses / Bag filters

    • Gas purification systems with a cloth filter (bag filters – baghouse) come in two options, a pulsed jet bag filter and a reverse air bag filter, which is used to control particulate emissions or regenerate the product in boilers, furnaces, mills and material handling applications. It can process more than 100 types of solid particles. Based on the process parameters, it is possible to select either online or offline purification system.
  • Combofilter

    • ComboFilter is a combination of an electrostatic precipitator (ESP) and a baghouse (BH) that offers the advantage of particle agglomeration by electrostatic precipitation and further emission reduction through the use of filter media. ComboFilter is the perfect solution to meet the revised stringent emission standards by retrofitting several ESP fields to the BH. Clients benefit from expanding the system in terms of cost savings (CAPEX), overcoming problems related to lower pressure drop in the system – just to mention a few benefits.
  • Flue-gas desulfurization

    • Flue-Gas Desulfurization (FGD) system is mainly available in three options – Wet Flue-Gas Desulfurization (WFGD), Spray Dryer Absorber (SDA) and Dry Sorbent Injection (DSI), each with characteristic emission control capabilities. The systems use an alkaline agent to remove sulphur dioxide (SO2). In addition to SO2 removal, these systems can also treat HCl, HF, SO3 and fly ash. The system is equipped with proven technology with the largest number of installations worldwide. Our system can achieve SO2, HCl and HF reduction with a capture efficiency of more than 97%.
  • Scrubbers

    • A gas scrubber is a versatile system capable of processing a wide range of gas volumes for cleaning the acidic/alkaline nature of gases, hygroscopic, sticky and explosive materials. The scrubber can be designed to reduce pollution by both particulate and gaseous contamination. The available options for particle cleaning are Venturi and cyclone, while scrubbers with fillers are used for gaseous cleaning. Plate scrubbers and spray towers can be designed for similar applications.

 

WATER AND WASTE SOLUTIONS

  • Water treatment

    • Water treatment involves removing impurities such as sand, undissolved solids, dissolved salts, ions, hardness from natural water bodies for use in industry and households. It is necessary to treat water from various sources for further use due to severe pollution and specific water quality requirements for industrial sectors.

    Wastewater treatment

    • Various components are added to the water after use and the water becomes wastewater. Wastewater treatment processes remove components such as organic matter, solids, heavy metals, etc. Wastewater mainly includes industrial wastewater and domestic wastewater. Wastewater treatment plants are designed using a combination of physical, chemical and biological processes so that the treated water can be discharged into the environment or reused.
  • Zero Liquid Discharge

    • Zero Liquid Discharge is a wastewater recycling process that is used to reduce liquid waste. As the name suggests, the goal is to remove all liquid waste from the system. The conventional way is to achieve ZLD using thermal technologies such as evaporators like Multi Effect Evaporation (MEE), Mechanical Vapour Compression (MVC) and Agitated Thin Film Dryer (ATFD). Many industries are considering ways to reduce water discharge with ZLD technology. The implementation of the ZLD system increases production costs, but water scarcity and strict standards are key factors for ZLD installations.
  • Desalination

    • Desalination processes separate dissolved salts and other minerals from seawater. The process takes place at high pressure and water is ideal for industrial applications. Water for human consumption can also be produced. Feedwater can include brackish water, seawater, wells, surface water (rivers and streams), wastewater and process water. The separation of the diaphragm requires the driving force provided by a high-pressure pump.
    • We have several successful installations that include energy recovery systems to improve the return from the system. With rising freshwater prices and growing scarcity, economical seawater treatment offers the opportunity to bridge the gap between demand and supply.