by admin on 13-01-2024
In 2021, Green Connect, embarked on a transformative journey to revamp CavinKares Effluent Treatment Plant (ETP). This endeavour aimed not only at upgrading the existing infrastructure but also at redefining the standards of environmental sustainability in the manufacturing industry. CavinKare, originally established as CHIK India Private Limited in 1983, has evolved into a formidable player in the market with 13 FMCG brands and 2 salon chains. Operating a dairy products manufacturing unit in Bhavani, Erode, the company found itself at the intersection of production and environmental responsibility. The effluent generated during the dairy manufacturing process necessitated a robust Effluent Treatment Plant to mitigate its impact on the environment. Understanding the ETP Process Before delving into the transformative work executed by Green Connect, lets comprehend the intricate Effluent Treatment Plant (ETP) process.
The Effluent Treatment Plant (ETP) process involves a series of tanks designed to treat wastewater systematically. It begins with the Collection Tank, where raw wastewater is gathered for initial processing. From there, the water moves into the Screening Chamber, where large debris and solids are filtered out to prevent damage to downstream equipment. Subsequently, the water enters the Oil and Grease Removal Tank, specifically targeting the separation of oils and greases from the wastewater. The Dosing Tank comes next, serving the purpose of adding chemicals or agents that aid in the treatment process. Following this, the water enters the Equalization Tank, where the pH is corrected to ensure optimal conditions for subsequent treatment stages. Continuing through the process, the water then passes through the Primary Clarifier, facilitating the settling of suspended solids. To enhance the efficiency of the anaerobic digestion process, a Buffer Tank is introduced after the Primary Clarifies. The Buffer Tank ensures a regular interval flow of effluent into the Anaerobic Digester, promoting the breakdown of organic matter in the absence of oxygen and producing biogas.
Moving on, the water then enters the Secondary Clarifier, where further separation of solids from the treated water occurs after biological treatment. Finally, the treated water is collected in the Outlet Tank before its ultimate discharge, ensuring compliance with quality standards.
Insight into CavinKares ETP Plant
CavinKare, recognizing the importance of environmental stewardship, diligently follows the standard ETP process. The companys unique focus lies in its Anaerobic Digester, known as the GLS ETP plant. This innovative digester efficiently segregates gas, liquid, and solid components of the effluent. The gas produced in this process is harnessed to run a Genset, contributing to the companys energy sustainability goals. The liquid component undergoes a series oftreatments, starting with the aeration tank, where the environment is conducive to stabilizing wastewater during the initial stages of treatment. This is crucial for the removal of soluble contaminants, toxic chemicals, and harmful pathogens. Subsequently, the liquid is directed to a Clarifying unit, followed by a Sandy filter and carbon filter for further purification. The purified water, now free from environmental pollutants, is channelled into a holding tank within the facility, serving a dual purpose by supporting gardening activities. The solids generated in the anaerobic digester are collected in a dry bed. Subsequently, these solids undergo a transformative journey in a solar bed designed explicitly for drying purposes. The dried substance emerging from this process is not merely waste; it metamorphoses into an excellent fertilizer with rich nutrient ontent. This eco-friendly fertilizer, a byproduct of the effluent treatment process, finds purpose in nurturing the greenery within the facility. ETP revamp by Green Connect Green Connect team replaced mild steel materials inside the anaerobic digester with stainless steel, enhancing the durability and efficiency of the infrastructure. To optimize functionality, a pipeline was established from the holding tank to the garden area, creating a seamless connection for water usage. Nine pumps, including 2 submersible pumps and 7 mono block pumps, were replaced with a new set, ensuring a reliable and efficient pumping system. Fifty diffusers for the aeration tank were supplied and installed, a critical component in maintaining optimal conditions for wastewater treatment.
The media within the Sand and Carbon filters, responsible for removing larger particles and organic compounds, respectively, underwent a comprehensive upgrade. The gas holder in the digester was fully refurbished, and features like a moisture trap and H2S scrubber were introduced to filter moisture and H2S from the gas, ensuring the environmental safety of the generated gas The Gen set, a vital component powered by the produced gas, underwent a thorough repair and service. Additionally, the solar dry bed, utilized for drying the sludge, was fully constructed, and a burner was supplied and installed to expedite the sludge drying process. The oil trap, another critical element in the ETP process, underwent servicing to ensure its continued functionality. In a remarkable expansion, a 1.5 lakh liter anaerobic digester made of mild steel material underwent a comprehensive refurbishment, further enhancing CavinKares capacity for efficient
effluent treatment. To complement the revamp, Green Connect supplied essential accessories like diffusers for the aeration tank and agitators for the clarifying unit, contributing to the seamless operation of the 1.5 lakh litre anaerobic digester. Green Connects transformative work at CavinKares Effluent Treatment Plant stands is a good example of harmonizing industrial production with environmental responsibility. The meticulous upgrades and strategic replacements implemented by Green Connect have not only enhanced the efficiency of the plant but have also set new benchmarks for sustainable practices in the manufacturing sector. As industries worldwide grapple with the imperative of environmental stewardship, this collaboration between Green Connect and CavinKare serves as an inspiration, showcasing the tangible impact of conscious choices in promoting a greener and more sustainable future.