Sewage Treatment Plant

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Sewage Treatment Plant (STP)

A Sewage Treatment Plant is a facility that treats wastewater before discharging it into the sewer system. The sewage entering a treatment plant can be filtered and processed using several methods. The first method is aeration. Aeration works by forcing sewage into a chamber and through a pump. Aerobic bacteria then treat the water. The aerobic bacteria also reduce other contaminants, such as detergents and humus. The resulting sludge is then removed periodically to maintain the health of the wastewater.

The second method of treatment is chemical digestion. This method involves breaking down solid matter in the wastewater. It also allows the wastewater to be treated while simultaneously reducing other contaminants, such as detergents and humus. When the waste is finished in the first tank, it broadens into a grit chamber. This filtration process removes larger solid objects, such as food scraps, that will clog the entire system.

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Features and Specifications of STP plant based on MBBR, MBR, SBR, SAFF etc., manufactured at Hydroflux Engineering Pvt Ltd.

Low Foot Print

Low footprint and recyclable quality effluent, although they are high energy-intensive systems.

High Speed Processing

Pass strict govt test performance with continuous nitrification & denitrification process.

Inexpensive Maintenance

STPs need frequent monitoring but it would have to be desludged and serviced at least once a year.

Expels Harmful

Treated correctly and then re-used/re-cycled for various uses that do not need potable quality.

Optimum Waste Utilization

STP is the process of removing contaminants from wastewater, primarily from household sewage.

Energy Proficient

Enhancing the Energy Efficiency of Wastewater Treatment Plants through latest technology.

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Hydroflux Engineering Pvt Ltd is a New Delhi and Mumbai based Wastewater treatment company having more than ten years of experiance. We manufacture a wide range of Water and Wastewater treatment systems like ETP, STP, DM, RO, and Water Softener Plants.

Frequently Asked Questions (FAQ)

Hydroflux Engineering Pvt Ltd is the best STP plant manufacturer in Delhi NCR and Mumbai. To know frequently asked questions (FAQ) related STP plant and its activity, please read this section or contact us on the given number or email.

The first step in a sewage treatment plant is the primary treatment. This stage is essential for the removal of large solids and ensures that no system components are damaged. Water goes through a settling tank to remove large organic materials. The process then moves onto screening to separate smaller particles. The wastewater is screened using a series of coarse screens with a six-millimeter spacing. Later, it is subjected to a secondary process called maceration. This process involves shredding raw sewage into tiny particles.

Sewage is separated into organic and inorganic parts. The former is broken down biologically by the presence of cultures and microorganisms, and the latter helps in the decomposition of organic matter. In the case of inorganic materials, these materials need chemical treatment to break them down. The resulting effluent passes to a humus tank, and the residual solids are removed periodically for disposal.

A sewage treatment plant uses a process known as filtration to break down the waste and return it to the water cycle. The filtration process removes the majority of bacteria and other pollutants from sewage and then releases a cleaner effluent. The basic process is the same as a septic tank, with several differences. The process is the same for both domestic and commercial properties.

Sewage treatment is a method that cleans water and removes contaminants from it to create a safe effluent for discharge. This process involves the treatment of sewage, which contains wastewater from households and businesses and pre-treated industrial wastewater. There are different types of sewage treatment processes, from decentralized systems to centralized ones that use a system of pipes and pump stations.

The first step in wastewater treatment is the primary stage, primarily concerned with removing suspended solids and other pollutants. This stage is separated from the main process line and involves sedimentation. When the preliminary stage is complete, the sewage passes into the secondary stage, which deals with dissolved and residual material. The secondary stage uses an aerated biological digestion process to separate solids from sewage.

The second step in wastewater treatment is secondary treatment, and it deals with dissolved and suspended biological matter. This stage involves the use of microorganisms in an enclosed environment to treat sewage. Most secondary treatment systems use aerobic bacteria to consume the organic parts of sewage. Some of these systems use fixed-film filters or suspended growth systems, where decomposing bacteria are introduced directly into the contaminated sludge.

The primary stage of sewage treatment is known as a settling basin. The sewage is allowed to settle down and separate from oil and solids, with the liquid remaining afterward. This process is often used for agricultural purposes, as solid waste is a rich source of fuel. Many industries use a portion of the water coming from the mains. The wastewater is a mixture of many pollutants, including nitrates, phosphates, and organic wastes.

A sewer treatment plant is used to treat wastewater. The primary chamber acts as a holding tank for raw sewage and is equipped with float switches and level sensors. This prevents overflow. The heaviest solids are removed from the sewage through a filtering process, which moves the liquid into the aeration chamber. An aeration chamber is a hybrid bioreactor where the air is blown to increase the oxygen content in the sewage. This process removes large amounts of toxic materials from the sewage.

The main function of a treatment plant is to remove harmful pollutants from wastewater and make it safe for reuse. These pollutants include pharmaceuticals, ingredients used in household products, and small-scale businesses. Even at very low concentrations, these pollutants can harm aquatic organisms. They contain endocrine-disrupting and genotoxic substances and can cause bacterial resistance.

Another main function of a treatment plant is to remove pollutants from wastewater. The sewage treatment plant is a system that uses controlled pressure to mix and decompose waste. It does this by creating air bubbles, which agitate and mix the sewage. The pressure in a treatment plant is generally around 0.3-0.4 bar. This means that it can handle the highest amount of wastewater and still maintain a relatively low concentration of pollutants.

There are three main types of wastewater treatment: primary, secondary, and tertiary. Primary treatment removes solid waste and breaks down organic matter through chemical processes. These processes may include chemical coagulation, precipitation, and hydrochloric acid. After treatment, wastewater is ready to be reintroduced into the environment. Before releasing wastewater, the Environmental Agency tests the water quality to ensure that it is not harmful.

There are 3 types of sewage treatment: primary, secondary, and tertiary. Primary treatment involves the removal of solids and bulky materials, such as grease to protect pipelines and improve downstream processes. The first type of filtration is called primary treatment, and it is the most common method. This process uses sedimentation equipment to separate sludge from water and reduce the suspended solids and chemical oxygen demand. The second type of filtration is called secondary clarification, which uses biological processes to reduce solids in the effluent further. The final stage of sewage treatment is disinfection.

The second type is called tertiary treatment. This process filters waste particles and nutrients using additional filtering lagoons and tanks. Once this process is complete, wastewater is released into a natural body of water, and this is called effluent. Once treated, wastewater is returned to the environment, and it can't be reused if it contains hazardous chemicals.

The first advantage of a wastewater treatment plant is that it is extremely time-efficient. They are built to treat large volumes of sewage quickly. Furthermore, they are built to be environmentally friendly. In addition to that, they are a great way to protect public health and preserve the natural environment against pollution. The disadvantage of a wastewater treatment plant is that it consumes unlimited electricity to run. However, there are several benefits of a sewage treatment plant.

Clean water is important to human health. Sewage carries disease-causing bacteria. In addition to humans, it can also affect animals and plants. Cities in India produce 40,000 million liters of sewage waste per day. These waters are harmful to human health, but they can cause damage to the environment and the economy. Putting in a wastewater treatment plant can help save millions of rupees and prevent pollution in rivers and streams.

Sewage treatment plants also improve the environment. By circulating air and allowing bacteria to grow, the sewage treatment plant's sewage breaks down more quickly and cleaner effluent. While the process is similar to a septic tank, there are some major differences. For example, a sewage treatment plant can treat waste from commercial properties and domestic dwellings.

The first two stages of wastewater treatment are filtration and biological. The filtration stage removes inorganic salts from the wastewater. The aerobic bacteria feeding on organic materials will begin the decomposition process. However, aerobic bacteria require oxygen to survive, so the sewage must be aerated in order for them to grow. The oxygen-generating chamber helps the anaerobic bacteria thrive.

The third stage is called tertiary treatment and is the final step of wastewater treatment. In this stage, 99% of all impurities are removed from the water, producing sanitized water similar to drinking water. Chemical feed stations, system automation, and special equipment are required for this step. The sanitized wastewater is released into the local body of groundwater for reuse.

The sewage flows to the primary settling tanks to remove dirt, gravel, grease, and floatable waste in the first stage. After this, the wastewater is passed through secondary settling tanks, where it is further treated to remove pollutants and suspended solids. After tertiary treatment, the sanitized water is released into the local waterways.

The fourth stage is known as sterilization. It is a physical and chemical process that eliminates all microorganisms from the wastewater. The chlorine process occurs during a contact time of 30 minutes or more, and the contact time is extended to two hours for highly contaminated wastewater. The dosage of chlorine depends on the quality of the wastewater and other variables. Basic doses are between six and 20 mg/l.

Aeration tanks contain many different types of bacteria, and the most common are coliforms and filamentous bacteria. Some are also fungi and algae, and some may be a combination of both. These organisms perform several vital roles during the activation sludge process, including reducing mechanical shearing in the aeration tank and increasing the size of floc particles so they can settle more quickly in the clarifier.

In the process of activating sludge, filamentous bacteria proliferate. These organisms play several roles in the process, both beneficial and harmful. Some of these bacteria serve as catalysts in the process, allowing the floc particles to settle more quickly in the clarifier. Others play essential roles in floc structure and detoxification. In addition to forming a sludge, these microorganisms are responsible for removing organic matter from the wastewater.

In the process of activating sludge, filamentous bacteria proliferate. These organisms play several roles in the process, both beneficial and harmful. Some of these bacteria serve as catalysts in the process, allowing the floc particles to settle more quickly in the clarifier. Others play essential roles in floc structure and detoxification. In addition to forming a sludge, these microorganisms are responsible for removing organic matter from the wastewater.

Actinobacteria play a significant role in the biological treatment of waste. These bacteria degrade a wide variety of chemicals, including those found in the wastewater. They are a major phylum in an Aeration TANK, and their abundance varied based on the date of the samples. In a May 25 sample, Chloroflexi were dominant. In the UASB reactor, Planctomycetes were the dominant phylum. The presence of this bacterial species increased with the operation of the aeration tank.

The aeration tank uses urea to improve the water quality. The organic molecule is a humectant and contains nitrogen, and it breaks down into ammonium and carbon dioxide, which are both readily available to organisms in the soil. This process is beneficial for treating sewage inflow as well as on-site faecal sludge.

The urea added to an aeration tank is a waste material carried in the blood to the kidneys. Urine is a fluid used to expel waste materials from the body. After removing, the urea is released in the urine as water and other wastes. The chemical reaction of urea hydrolysis broke it down into ammonium and carbon dioxide and reabsorbed into the water. This nutrient is beneficial to the soil organisms and the aeration tank.

Urea is excreted in urine and breaks down into ammonium and carbon dioxide in the human body, and it is then flushed out in the urine removed with water and other wastes. By adding urea to an aeration tank, you can make aeration more effective. In addition to preventing clogging, urea can reduce the smell and bacteria in wastewater.

If you have extra space and are considering a home upgrade, why not consider greywater treatment? The benefits are many. First, the extra space can be used for ornamental plants, fruit trees, and vegetable gardens. If you don't want to risk contaminating the plants, you can use greywater to water them. Be sure to keep the greywater away from edible parts.

Second, a separate greywater treatment system will provide better water security for the resident. The builder's priorities are often different from the residents', so they incorporate greywater with sewage in the sewage treatment plant (STP). A separate greywater treatment system is easier to operate, and it gives you a backup facility in case STP fails. It's also more efficient for the builder and cheaper to operate.

Third, it will save money on your energy bill. Depending on the system you choose, it can save you hundreds or even thousands of pounds each year. You might be tempted to save a few hundred dollars, but the savings could quickly mount up. Unlike traditional systems, greywater treatment is also very inexpensive compared to installing a new system. And most systems only require a few square meters of extra space.

Aeration is a process in which large amounts of air are passed through water. After passing through the water, the air is vented. This allows the dissolved gases and volatile compounds to escape from the solution. As a result, the dissolved minerals move from their soluble state to a solid and precipitate. Some aeration systems can also filter water, beneficial for those with high iron and manganese levels.

Aeration is an efficient purification method because it removes dissolved gases, oxidizes dissolved metals, and neutralizes volatile organic chemicals. It is usually the first step in a water treatment process. This technique removes many of the toxins and gases from water, and it is also helpful in reducing toxins such as heavy metals and pesticides.

Aeration is best for removing hydrogen sulfide and dissolved iron. Aeration also helps to remove certain tastes and aromas. However, it cannot remove pathogenic organisms. In addition, it is ineffective against dissolved rust, nitrates, and other chemical contaminants. While aeration is an excellent solution to many water purification issues, it is not always the most cost-effective option.

The aeration process also removes volatile substances from water. These gases are the primary causes of stains and discoloration in the water. Some of these contaminants can be difficult to remove by other means. In this case, strong chemical oxidants are used to neutralize the substances in the water. Examples of strong oxidants include chlorine and potassium permanganate. Carbon dioxide is also an effective solvent in removing contaminants from water.

Increasing the number of bacteria in aeration tanks is important for controlling the growth of pathogens. This can be achieved by increasing the dissolved oxygen (DO) concentration. The dissolved oxygen concentration should be kept at a low value, preferably between one and three milligrams per liter. Any dissolved oxygen levels above that limit will lead to filamentous bacteria, which are undesirable because they compete with beneficial bacteria and inhibit their growth.

During startup and aftershock loading, the best time to introduce beneficial bacteria into your aeration tank is during startup and aftershock loading. The bacteria will double in the first twenty minutes. Then, they will begin feeding on organic matter and clump together to form flocs. When these flocs break down, the resulting sludge is called sludge. The pH level of your wastewater and aeration tank is called mixed liquor. This mix is where the bacteria will go through five growth phases.

The amount of dissolved oxygen and pH in your aeration tank is essential to optimal biological activity. The ideal pH range is 6.5-8.5. The more acidic the water, the lower the bacterial count. The best aeration tank pH value is 5.5-8.5. If you want to increase bacteria in your aeration tank, add a little acid to it.

Aeration is an effective way to treat water. Large amounts of air are passed through water and then vented outside. The process allows dissolved gases and volatile compounds to dissipate into the water. This results in the oxidation of the chemicals, which then fall out of the solution and become suspended. Filtration is used to remove these particles. Aeration is also an effective way to reduce the amount of iron and manganese in the water. The main advantages of aeration water treatment include its ability to eliminate dissolved gases and odors and taste and reduce the concentration of dissolved iron. Regardless of its effectiveness, aeration is not a good option for eliminating pathogenic bacteria and viruses.

Aeration may not remove dissolved gases in the absence of oxygen in the water, and aeration is also ineffective at removing dissolved carbon dioxide. By raising the pH level of water, methane is removed, making the water safer for human use. Aeration can't remove dissolved gases, but it can improve the odors and taste of water. In addition, it raises the pH level of water, which is essential for the health of human beings.

Aeration promotes the growth of microbes in wastewater. These bacteria feed on organic material and form flocks. The microbes settle out, but these bacteria are recirculated back to the aeration basin, which increases the decomposition rate. Aeration is the most common method in wastewater treatment, and it is a vital part of the secondary treatment process.

Aeration is a necessary process that removes organic pollutants from water. It is a chemical reaction whereby large volumes of air are passed through the liquid, and the gas is then vented outside the system. The result is a mixture of dissolved gases and volatile compounds. The dissolved minerals and other substances are removed and re-enter the solution as solids. The aeration process also helps filter out particles like manganese and iron.

Aeration is an important step in water treatment. It allows for a more balanced ecosystem by accelerating the natural elements present in water. There will be less oxygen in the system when this occurs, and the mixture will not be as effective. It will result in polluted lakes and rivers, which will endanger life. Untreated water will also contaminate the air and fresh water supply.

Aeration is a process to increase dissolved oxygen in the water column. Lakes are usually layered due to their temperature and oxygen content. Stratification is an issue that poses numerous challenges to natural resource managers. The main purpose of aeration is to increase the amount of dissolved O2 in the water column. Increasing dissolved O2 in a lake will improve a number of aspects, including the health of fish, plants, and other organisms.

Aeration can improve water quality by removing free carbon dioxide, which raises the pH of the water. Aeration is also a good way to control bacteria and dissolved iron. It can reduce the amount of ammonia in a water body, which will decrease the growth of harmful bacteria. This process is also known as aerification and involves introducing air to a liquid.

Aeration is adding air to a liquid to improve its quality. In wastewater treatment, aeration can remove dissolved gases, oxidize soluble iron and manganese, and reduce ammonia. Aeration can also reduce bacterial counts in wastewater by reducing the amount of dissolved metals. Using aeration to improve water quality is an excellent way to protect the environment.

The term BOD is derived from the amount of oxygen required by bacteria to decompose organic matter. COD refers to the amount of oxygen needed for the chemical oxidation of total organic matter in a body of water. Both BOD and COD are commonly used to measure the organic content of wastewater and treated effluent. Industrial stormwater has a high BOD concentration because it contains emulsified oils, antifreeze, and residual food from bottles.

In water, the amount of dissolved oxygen in a water supply is measured using the biological oxygen demand (BOD). The BOD level is based on the average of two different water samples. Your tap water may have one BOD to five COD levels depending on where you live. This is considered a moderately clean source of water in most areas. When the ratio is less than one, your drinking water is not considered unclean.

A closed sample of water is incubated for five days with a strong oxidant, potassium dichromate, and boiling sulfuric acid. The BOD test requires more time. However, COD can be measured within a day. A standard BOD limit is 30 mg/L, while a COD limit is typically 250 to 500 ppm. Remember that BOD is always higher than COD. It is a good idea to get a COD test from a qualified lab, as higher levels of BOD can lead to fines.

Aeration is pumping air into the water to raise the pH level, and it works by removing carbon dioxide from the water and raising the pH. You can test the PH level in your pool using an API kit or a Hagen kit, and both give the same reading. Performing an API kit test is the best way to determine if aeration is necessary.

Aeration can be beneficial to the pool because it can boost the pH level. It increases the amount of carbon dioxide (CO2) in the water, which lowers the pH level. CO2 outgasses as water is aerated. The acid in the water combines with the carbon dioxide, causing the pH to decrease. Aeration will raise the pH level, but the acid will not lower the total alkalinity (TA).

Another way to raise the pH level is through the use of return jets. This is an inexpensive solution, but it isn't ideal for many saltwater pools. In addition, return jets are typically aimed upward, which may not be effective in raising the pH level of the pool. Aeration is an excellent way to get the water flowing, but it's not the best solution for every situation.


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ETP, STP, DM, RO, and Water Softener Plants

Hydroflux Engineering Pvt Ltd is a reputed organisation and associated with many other reputable organisations to maintain and deliver quality Wastewater treatment products and services like ETP, STP, DM Plant, Industrial RO Plant and Water Softener to our clients in India and Abroad.


For more than 10+ years, we have been serving ETP, STP, DM Plant, Industrial RO and Water Softener Plant projects for our happy clients' acrosses 17+ countries.