What Is Sewage?
Most sewage (99%) is simply unclean water. The remaining portion consists of solids, chemicals, lipids, nutrients, nastiness, and a few things that shouldn't be in the sewage system. Poop alone is not sewage. Additionally, it includes anything you flushed down the toilet, sink, or drain. We offer sewage treatment plants that carefully remove and treat all sewage from your residences, workplaces, and educational institutions every day. As Sewage treatment plant manufacturer, we will tell you why it's so crucial to society.
What Is the Need for A Sewage Treatment Plant?
Sewage treatment plants perform wastewater treatment that helps remove removing contaminants from sewage to produce an effluent that is suitable for discharge to the surrounding environment or is intended for reuse. This is needed to prevent water pollution from raw sewage discharge. This water is then certified safe for release into other water sources.
Benefits Of a Sewage Treatment Plant
1. Sewage treatment plants are cost-effective and efficient to operate with minimal maintenance.
2. They are very reliable and produce a safe and cleaner environment.
3. They can save natural resources for future generations to use.
4. Easy to install even on the most challenging or space-restrained sites.
Wastewater Treatment Process
Stage 1: Preliminary treatment
Once the wastewater reaches the plant, we remove large objects like rags, plastic and rubbish using specially designed filter screens.
We’ve seen many unusual things arrive at our wastewater treatment plants, from cotton buds, baby wipes and false teeth to Barbie dolls. These objects can clog up our machines and damage equipment. That's why it's important to only flush the three Ps: pee, poo and (toilet) paper.
After screening, the wastewater goes through our grit removal tanks. Heavy inorganic materials like rocks and minerals sink to the bottom of the tank. When the water settles, we drain the tank and the water flows onto the next stage of treatment.
We dispose of any rubbish and sediment collected at approved landfill sites.
Stage 2: Primary treatment
Next up are the sedimentation tanks (also known as settling tanks or clarifiers). Particles in the water gradually sink to the bottom of the tank and form sludge. Mechanical scrapers push the sludge to the end of the tank, where it’s then pumped to a sludge treatment area.
Stage 3: Secondary treatment
At this point the wastewater looks relatively clear. But there are still bits of organic matter and dissolved nutrients that need to be removed.To do this, the wastewater goes through an aeration process. We pump air into the tanks holding wastewater to stimulate the growth of naturally occurring microbes. These microbes need oxygen to help them break down organic material.
The microbes form ‘activated sludge’ flocks and feed on the organic matter remaining in the wastewater. The microbes remove contaminants and convert organic matter into carbon dioxide, nitrogen gas and more activated sludge.
The aeration process is a natural alternative to chemical processing. If we relied on chemicals to treat wastewater, we'd also need a process to remove them before returning the water back to the environment.
When the activated sludge flocks have done their job, the water flows through to secondary sedimentation tanks. This is the final stage of the wastewater treatment. We don't need to cover these tanks because by this stage, the water is clear and doesn’t smell.
Stage 4: Water recycling and disposal
Most of our treated wastewater is returned to the ocean via a large pipe. The end of the pipe contains small holes to ensure the wastewater is evenly dispersed into the sea. This is the most cost-effective option as the process uses very little energy, instead relying on gravity to transport the water.
Sunlight, oxygen and ocean currents combine to continue the wastewater treatment process. We monitor and test the seawater near our treatment plants to ensure our wastewater is not causing harm.
We also recycle some of the treated wastewater. Wastewater that goes onto our advanced water recycling plants is treated further and used in the following ways:
Benefits Of a Sewage Treatment Plant
• irrigation of sports grounds, golf courses and other open public spaces.
• irrigation of non-food crops like trees, woodlots, turf and flowers.
• replenishment of our groundwater supplies by pumping treated wastewater (after a tertiary advance treatment) back underground.
Why STP Are Used in Offices:
The primary goal of sewage treatment is to remove harmful contaminants and pollutants from the wastewater, making it safe for discharge or reuse. Sewage treatment plants play a vital role in preventing water pollution, protecting aquatic ecosystems, and ensuring a sustainable supply of clean water. STP in offices are essential for managing and treating wastewater generated from various activities within the workplace. STP helps in removing impurities, pollutants from sewage ensuring that the discharged water meets in environmental standards.
Offices contribute to the generation of wastewater through various activities like toilet flushing, handwashing, and kitchen use. Connecting to such treatment facilities is a fundamental aspect of sustainable and responsible business practices. Utilizing a sewage treatment plant demonstrates a commitment to environmental responsibility. This can enhance the corporate image of the office and contribute to a positive reputation, as stakeholders often appreciate businesses that prioritize sustainable and responsible practices. This contributes to water conservation efforts by reducing the demand for fresh water resources in non-potable applications such as irrigation or industrial processes.
There may be initial costs associated with connecting to sewage treatment plants, the long-term benefits often include savings from avoiding environmental fines, potential legal issues, and ensuring compliance with regulations. It reflects a commitment to responsible resource management and environmental stewardship.