Effluent Treatment Plant

The coronavirus pandemic has firmly put the focus on issues of public health and the environment. The marked improvement in the water quality of our rivers during the lockdown also shone a light on how our industries had hitherto been polluting them by indiscriminate dumping of effluents. Almost all industries require water to operate and therefore release large volumes of wastewater that is most often contaminated with various hazardous chemicals.

Industries are mandated by law to treat their wastewater to ensure that the level of contaminants in the discharged water is within permissible limits. While many industries have been flouting these regulations, enforcement by regulatory agencies is gradually becoming stronger. If these industries fail to clean up their act soon, they are bound to attract severe penalties and may even face closure.

Effluent Treatment Plants (ETPs) not only enable industries to treat their wastewater for safe discharge but enables them to reduce their overall water use as the treated water can be reused in the industrial process. This certainly is an important bonus in the context of increasing water stress and depleting water tables. For the optimum and cost-effective treatment of wastewater the ETP needs to be designed as per the needs of the specific industry or industry cluster. This requires an accurate analysis of the nature and concentration of contaminants contained in the wastewater and the volumes of wastewater generated.

ETPs operating at optimal efficiency are the need of the hour and will help ensure that our rivers stay clean and that we are not overdrawing from our limited water resources. Mitra S K Private Ltd. provides accurate testing services for analysis of effluent wastewater that is required for the purpose of both design and monitoring of ETPs by industries and municipalities.

ETPs Function Like the Kidneys of Industry

Pronounced water stress is increasingly becoming a common reality across the world. The rapid pace of urbanisation and the growth of the industry is also adding to the increasing demands being placed on limited water resources. Almost all industries require significant amounts of water to operate, whether it is used for washing, dilution, or heat transfer. Therefore, they also produce large volumes of wastewater or effluent that often contain various hazardous chemicals.

Industries are mandated by law to treat their wastewater to ensure that the level of contaminants in the discharged water is within permissible limits. Accordingly, large industries are putting in the appreciable effort and investment into improving the situation by setting up Effluent Treatment Plants (ETPs). ETPs not only equip industries to treat their wastewater for safe discharge but also enables them to reduce their overall water use as the treated water can be reused in the industrial process.

For the optimum and cost-effective treatment of wastewater, the ETP needs to be designed as per the needs of the specific industry or industry cluster. This requires an accurate analysis of the nature and concentration of contaminants contained in the wastewater and estimates for volumes of wastewater generated. As depicted in Figure 1, an ETP has several components, each with its unique function. The effluent passes through these components in sequence, eventually emerging as clean water that is safe for discharge. Specific chambers allow for settling of sediment, filtering out of large particles, removal of oils and grease, and oxidation of organic and other matter.

To evaluate the functional efficiency of an ETP, samples may need to be collected from the inflowing and outflowing effluent of specific component units. Analysis of these samples will reveal how well each component unit is functioning and whether any of them require maintenance or up-gradation.

ETPs operating at optimal efficiency are the need of the hour. These will enable industries to remain compliant with environmental regulations, avoid polluting land and water, and also ensure that our limited water resources are not overdrawn. Mitra S K Private Ltd. provides accurate testing services for analysis of effluent wastewater as is required for the purpose of both designing and monitoring of ETPs by industries and municipalities.