Energreen Solutions, Your Environmentalist

Science & Technology

The Energreen Group has its sights fixed firmly on the future and the future is driven by one force alone; that of Science and Technology in dynamic fusion.

According to Google dictionary, 07-Aug-2011, "Science is the intellectual and practical activity encompassing the systematic study of the structure and behavior of the physical and natural world through observation and experiment."

Technology is defined as, “the skills, methods and processes used to achieve goals……” Machines, tools, devices and technology systems are put into operation to render services and goods or to activate investigations or analyses for the sake of solving problems or for the sake of simplifying actions and making them more and more productive. By its very nature, Technology is constantly evolving and any area of enterprise that is dependent on technology must, likewise, constantly reinvent itself and remain in a state of dynamic transformation, if it is to retain its relevance and continuously deliver quality and customer satisfaction.

Our business is rooted in the scientific observation of the physical and natural world around us and we make it our objective to design technological interventions to correct anomalies in the natural scheme of things and to ensure that nature is restored for the sake of human wellbeing.

Water Management

When astronomers search for life outside of our planet, they look for spots where a planet is likely to contain water because where there's water, there might, just possibly, be life. In fact, without water, life on Earth would not have begun.

Sanitation and Hygiene are of paramount concern in modern times. The quality and availability of water is closely tied to this concern. A “Life Style that cares….” has evolved, at home and in the workplace, making water a treasured commodity. We cater to this sentiment, by providing pure water for every need. Help us to help you thrive and prosper.

Domestic, industrial & commercial importance of water

Besides being essential for our bodies to function, water also promotes life in numerous other ways; in advancing civilizations and in promoting socio-economic developments. Water is needed in our daily lives as well as in all industrial and commercial activities, in one or many of its different manifestations, such as liquid (water), gas (vapor) or solid (ice) forms.

Water should ideally be colorless, tasteless and odorless in order to meet optimum standards of purity. At present, many sources of water are contaminated with some unpleasant color, taste or odor. Besides chemical contaminants of various types, there could also be many biological (bacteria / virus) contaminants, which may not be evident by color, taste or odor. These can be successfully identified only by laboratory analysis of source water.

The only way to ensure availability of water that meets the required standard of purity; whether it is for purposes of human utility or industrial or commercial purposes, is to install Water Treatment Plants (WTP).

Uniqueness of Energreen Water Treatment Plants(WTP’s) or Water Purification Systems.

With respect to domestic or daily human utilities of water; if the source is contaminated, several versions of wall mounted or table top water filters/purifiers are available, but these usually cater to a single tap only. The unpalatable, contaminated water will still have to be used for bathing, brushing, washing face, washing clothes/dishes etc. Such water could possibly damage expensive sanitary fittings too.

We customize our Water Treatment Plants or Water Purification Systems by studying the laboratory analysis report of your source water and by designing or providing solutions ideal for the particular kind of contamination in your source water and also your specific output requirements. We use state of the art technology and sophisticated methodology to customize our systems so that you get the precise level of purity desired. Our “Centralized Water Treatment Plants” help you to collect pure water in your over-head tank or storage facility. This system enables you to enjoy pure water through every tap in your building, no matter what the quantity you may need or how large the building.

Recreational, Commercial and industrial applications.

We also assist you to avail pure water with the required level of purity for any of your recreational, commercial or industrial applications. We provide solutions by studying your source water parameters and assuring the required treated water parameters to suit your needs.

How do we make it possible?

Once the laboratory analysis report of your source water is procured, the entire water treatment system is designed just for you, after factoring in your raw water parameters and your needs for the end use. In other words, at Energreen Solutions, customization is the key to customer satisfaction. Using state of the art technology to fulfill your needs, our experienced professionals dedicate themselves to the objective of delivering satisfaction at every stage; beginning with designing and erecting the plant, to maintaining it, later on. We expend meticulous care in attending to every minute detail to ensure that you will enjoy the benefit of user-friendly systems.

We have water treatment systems for

  • Independent houses, flat/apartment - buildings, hospitals, hotels, resorts, commercial buildings, shopping malls, educational institutions, hostels or any other building structures.
  • Swimming pools, Water Theme Parks or any other recreational installations.
  • Industries dealing in Fish, Meat, Bakery items, Beverages, Food outlets, Medial or Pharmaceutical commodities and commercial sale of bottled water.
  • Any other area of commerce or industry, not mentioned above, that involves the use of water and the discharge of waste water.

Waste Water Management

Over the years; rising populations, growing industrialization and expanding agriculture have pushed up the demand for water. Efforts have been made by mankind to collect and conserve water by building dams and reservoirs, by digging wells and harvesting rain water and even by recycling sea water through desalination. Water conservation has become a critical and urgent need of our times.

All of the water, whether conserved or otherwise, once used, becomes “waste water” of varying degrees of contamination. Ground water is regularly recharged through nature’s own recycling process. However, the huge disparity in the rate at which natural purification occurs and the rate at which waste water is generated is an ever-magnifying challenge. The gravity of this dangerous situation is further amplified by the reality that water only changes forms and is never created afresh, though the demand for water keeps increasing.

Sewage or Effluent Treatment Plants help to minimize the alarming gap in the comparative rates of ground water regeneration and waste water generation, by helping to recharge ground water at a faster rate. By releasing treated water into the earth, these plants serve to accelerate the process of ground water recycling and minimize contamination resulting from seepage of untreated water.

Standards for Sewage Treatment Plants & Effluent Treatment Plants.

In India, the Central Pollution Control Board and the various State Pollution Control Boards provide explicit guidelines and set stringent norms to ensure the quality of scientifically treated water. ENERGREEN SOLUTIONS functions assiduously to ascertain that the parameters of the water treated by its STP’s / ETP’s will unfailingly meet the standards of the client’s respective State Pollution Control Board.

We provide Waste water – Sewage/Effluent -Treatment Plants

  • Residential buildings – flats / apartments /housing colonies.
  • Hospitals
  • Hotels & Resorts.
  • Commercial buildings & shopping malls.
  • Educational institutions & Hostels
  • Industries of any kind.
  • Any premises, which engage in activities that generate large quantities of waste water.

Your Business Advantage in Propagating Waste Water Treatment.

Waste Water management was perceived more as a liability or an inconvenient task, rather than an imperative need and even less was it considered in any way, beneficial. Increasing awareness of environmental concerns and the undeniable threat of crippling water shortage have contributed to an enormous change in the perceptions of both people and industry, in equal measure. The imminent and irrevocable damage to the most vital of nature’s resources- water - is now a reality and there is a pervasive trend to contribute to its conservation.

Business houses are actively promoting water conservation measures not only for the sake of recharging an essential resource, but also in the interest of promoting a caring image by demonstrating concern for the environment and thereby adding ‘green’ value to the brand image. Energreen Solutions takes pride in the fact that when its customers invest in Sewage Treatment Plants or Effluent Treatment Plants, they will gain, immeasurably, both in terms of immediate goodwill and in terms of long term returns.


There are numerous methods of treating water and wastewater, depending on contamination levels and purpose of end use.

Water purification refers to the final outcome of one, or a series, of treatment processes that are employed to produce drinking water that is pure enough for the most critical of its intended uses; human consumption. The more contaminated the source water, the more complex will be the treatment processes it has to be subjected to, before purity is achieved.

Water treatment involves the use of scientific methods to attain specified parameters of water quality, as required by the needs of particular industries or equipment. The parameters are determined by the unique standards of water quality required in each particular industrial activity. Better product quality is the objective of treating water to achieve the desired parameters.

Wastewater treatment is the process that removes the majority of contaminants from wastewater or sewage or effluent and produces ‘treated water’ suitable for disposal to the natural environment after the separation of ‘sludge’. The wastewater needs to be brought down to acceptable parameters as specified by the Central/State Pollution Control Board, before disposal to the natural environment. This water can be further treated to produce water of any other specified grade or quality.

Water purification – Physical Methods.

Physical water purification is primarily a filtration process. FILTRATION uses a purification instrument to remove solids or insoluble particles from liquids. There are several different filtration techniques, the simplest being SCREENS. Other typical filters are comprised of a tank / filter vessel, the filter media and a controller, to enable backflow. Depending on the media used, these are termed SAND FILTER, IRON REMOVAL FILTER, ACTIVATED CARBON FILTER, WATER SOFTENER etc.

A more sophisticated method is CROSS FLOW Filtration, where membranes are used to filter water. There are several different membrane filtration techniques and they are termed MICRO FILTRATION, ULTRA FILTRATION, NANO FILTRATION AND REVERSED OSMOSIS (R.O). Techniques are chosen depending on the kind of compounds that need to be removed from the water and the particle size of these. Membrane Bio Reactor or MBR system is a technology used to improve wastewater quality.

There are CARTRIDGE FILTRATION units which consist of fibers. They generally operate most effectively and economically on applications having contamination levels less than 100ppm. For heavier contamination removal applications, cartridges are normally used as a final polishing filter.

Water Purification – Chemical Methods

Chemical purification

Chemical purification of water can be achieved through various methods. The choice of method will depend on the kind of contamination in the water. Some of the chemical purification techniques are explained below:

  • Chelating agents are added to water, in order to prevent the negative effects of hardness.
  • Oxidizing agents are added to act as a biocide, or to neutralize reducing agents.
  • Reducing agents are added to neutralize oxidizing agents,


Clarification is a multi-step process to remove suspended solids. First, coagulant chemicals are added. Coagulants reduce the charges of ions, so that solids accumulate into larger particles called flocs. The flocs then settle by gravity in settling tanks or are removed as the water flows through a gravity filter.

Deionization and softening

Deionization is commonly achieved through ion exchange. Ion exchange systems consist of a tank with small beds of synthetic resin, which is treated to selectively absorb certain cat-ions or an-ions and replace them with respective counter-ions. The process of ion exchange lasts until all available spaces are filled up with ions. The ion-exchanging device then has to be regenerated by infusing suitable chemicals. One of the most commonly used ion exchangers is a water softener


Disinfection is one of the most important steps in the purification of water. It serves the purpose of killing the undesirable microorganisms present in the water. Therefore, disinfectants are often referred to as biocides. There are a variety of techniques available for disinfection such as, chlorine disinfection, UV disinfection and Ozone disinfection.


Depending on existing raw water pH, it is brought up or down to neutral ( 7 ) or between 7 and 7.5, using appropriate chemicals.

Water Purification - Biological Method

Biological water purification is performed to lower the organic load of dissolved organic compounds. Microorganisms, mainly bacteria, activate the decomposition of these compounds.

There are two main categories of biological treatment: aerobic treatment and anaerobic treatment.

The Biological Oxygen Demand (B.O.D.) defines the organic load. In aerobic systems the water is aerated with compressed air (in some cases merely oxygen), where as anaerobic systems run under oxygen free conditions.

Activated Sludge Process (ASP) was the most common technology adopted earlier and based on this fundamental principle, several advanced technologies developed.

MBR (Membrane Bio Reactor) technology was initially developed in the late 60’s, and its use gained momentum from the early 1990’s. This technology is primarily used for the treatment of wastewater. It is a combination of a membrane process like micro-filtration or ultra-filtration and the application of a suspended growth bioreactor.

MBBR (Moving Bed Bio-film Reactor) technology is preferred for the improved reliability and simplified operation when compared to the traditional wastewater treatment systems. This technology makes use of many (around thousands) of polyethylene bio film carriers that operate in a mixed motion within an aerated wastewater treatment basin. The protected area of the bio film and apt conditions help in growing and thriving of the bacteria culture. An aeration grid is situated at the bottom of the reactor that supplies oxygen to the bio film. It helps in keeping the bio carriers suspended and they get completely mixed with the reactor. The bio film on the carriers break down the wastewater and the treated water comes out through a grid or sieve in which the bio carriers are retained.

Advanced Oxidation Processes (AOPs) are promising technologies for the treating of wastewater containing toxic and persistent organic impurities. These processes involve the in-situ production of highly reactive and nonselective hydroxyl radicals (•OH). The radicals can be generated in the presence of H2O2, O3, and ultraviolet radiation. The generation rate of hydroxyl radicals can be enhanced by adding suitable catalysts.