How do sewage treatment plants work?

Wastewater treatment is vital for healthy communities and ecosystems. It delivers purified, safe water for both industrial and municipal purposes, reduces the risk of disease transmission, and helps ensure a green, vibrant environment for the coming generations.

What Is Wastewater?

Wastewater, or sewage, is water people have used, either at home in their bathrooms, kitchens, laundry rooms, and yards or in industrial operations like agriculture or manufacturing. Sewage treatment plants process about 34 billion gallons of wastewater a day.

Untreated wastewater contains mostly water by volume. It also contains numerouscontaminantsthat make the water unsafe foreither recycling or discharging into the environment.

What is sewage treatment plant?

A sewage treatment plant is a facility designed to process and treat sewage, also known as wastewater. Its primary goal is to remove contaminants and impurities from the sewage to produce treated water, or effluent, that is safe for release into the environment or for reuse in various applications. The treatment process typically involves physical, biological, and chemical methods to purify the wastewater. Sewage treatment plants play a crucial role in protecting public health, preventing environmental pollution, and ensuring the responsible management of wastewater generated from residential, industrial, and commercial sources.

What are the common benefits of customized Sewage Treatment Plant?

Customized sewage treatment plant or customized STP offers various advantages to your establishmentand are as follows:

1. Cost-effective and simple to manage

2. Consumes minimal energy

3. Highly effective & compliant with safety standards

4. Customized technologies to suit demanding site conditions

5. Eliminates various contaminants while minimizing noise and odorproduction

Sewage Treatment System in Fast-Moving Consumer Goods (FMCG) Sector

With increase in demand for consumer-packaged goods there is a necessity to enhance the productivity of production facilities. The production facility must comply with regulatory standards, decrease production expenses while ensuring product quality. Akruthi Enviro Solutions, leveraging its decades of expertise in this domain is a one stop solution provider for the various requirements to meet the above parameters.

CIP and SIP systems guarantee the achievement of productivity and cleanliness standards without the need for plant disassembly, resulting in decreased labor intensity, consistent repeatability, and minimized downtimes. Pigging systems enhance product recovery, minimizing losses, lowering effluent loads, and reducing cleaning durations. The implementation of flow plates helps cut down on redundant costs related to piping and valves. Apart from this we provide automation solutions, process piping, and process vessels.

Working function of STP for FMCG Sector:

Pre-treatment: As part of the pre-treatment process, the wastewater is screened to filter out any significant solids or particles. Following this, the wastewater is directed through a grit chamber to separate and eliminate sand, gravel, or other dense materials.

Primary treatment: The majority of solids are eliminated in the initial treatment stage through the use of screens and settling tanks. Given that solids make up approximately 35% of the impurities that need to be eradicated, this stage is of utmost importance. The screens usually have openings around 10 millimeters wide, effectively screening out large items such as sticks, debris, and other waste from the wastewater. This separated material is then discarded and sent to the landfill.

Secondary treatment: In the secondary stage of wastewater treatment, bacteria play a crucial role in breaking down the remaining contaminants. This is achieved through the thorough blending of bacteria and oxygen with the wastewater. The oxygen speeds up the bacteria's decomposition of the contaminants. The water is subsequently moved to settling tanks where the sludge settles once again, effectively extracting 90 to 95 percent of the impurities from the water. Approximately 90 to 99 percent of coliform bacteria are eradicated through secondary treatment, along with 85 to 90 percent of biochemical oxygen demand (BOD) and suspended solids.

Tertiary treatment: The elimination of dissolved substances in the tertiary (or advanced) treatment encompasses the extraction of color, metals, organic compounds, and nutrients such as phosphorus and nitrogen. Tertiary treatment encompasses a range of physical, chemical, and biological remedial processes.

Zero liquid discharge (ZLD): The primary objective of this approach is to purify a system of all liquid waste. Zero Liquid Discharge (ZLD) is centered on generating reusable clean water (e.g., for irrigation), minimizing wastewater in a cost-effective manner, and safeguarding the environment.