Hospital Sewage Treatment Plant and its Working Process

Hospitals use a significant amount of water and generate an enormous quantity of hazardous and contaminated waste that could pollute the environment. Hence, hospital sewage treatment plants are a must to treat the wastewater and reduce the hospital’s environmental impact. Hospital sewage treatment plants adhere to a specific workflow that helps treat the sewage effectively. Let’s see what it is.

Sources of Hospital Sewage Treatment Plant

Hospital sewage is generated from various sources within the hospital premises. It includes emergency rooms, ICUs, canteens, laboratories, etc.

Sewage generated from most of these sources contains hazardous waste. If hospital sewage is not treated appropriately, the water could be released into the environment and affect it significantly.

The characteristics of hospital waste include the following.

  • Microbial pathogens
  • Hazardous chemicals
  • Heavy metals
  • Pharmaceuticals and their metabolites
  • Drug residues
  • Radioactive isotopes
  • Harmful bacteria and virus

Accordingly, Pollution Control Board has made it imperative for every hospital to operate and maintain a hospital sewage treatment plant.

Let’s now look at the process of a hospital sewage treatment plant.

Wastewater Treatment in Hospitals – Hospital Sewage Treatment Plant Process

STP manufacturers and operations and maintenance teams set a compliant sewage treatment process that helps treat the wastewater appropriately. Here’s the process the STPs follow.

  • Pre-Treatment Process

In this stage, items like sticks, large debris, inorganic solids, rags, etc., are removed to help protect the plan.

  • Primary Treatment

This stage involves the physical separation of solids and greases from wastewater. Water flows into the primary filter or clarifiers for some hours to let solid particles settle. Lighter particles will float and skim off from the tank. The settled solid is called primary sludge. It contains around 60-70 percent of solids. A part of the treated wastewater is sent for further treatment.

  • Secondary Treatment

The process removed dissolved inorganic material present in soluble and colloidal form from the wastewater. The treatment involves the use of bacteria to convert the colloidal and dissolved organic matter.

The partially treated wastewater flows from the primary tank to the aeration tank. Further, the air is supplied through the air blower to provide oxygen for microbes.

When wastewater flows into the secondary clarifier, where solids settle, termed secondary sludge, part of it is recycled to enable the activated sludge process.

The remaining is mixed with primary sludge, sent to the sludge digestion tank, and then disposed of. The secondary treatment removes about 90 percent of inorganic solids.

  • Tertiary Treatment

This forms the last treatment in most STPs. It involves removing the suspended solids and organic matter, which couldn’t be removed during the previous stage.

Further, the step includes removing pathogenic microorganisms through a process called disinfection. The disinfection process uses various disinfection agents based on the wastewater condition. These agents include UV light, ozone, chlorine, etc. The disinfected water can now be used for reuse or disposal.

Hospital Sewage Treatment Plant Manufacturers and Operation Maintenance with CHFour

CHFour is one of the leading hospital sewage treatment plant manufacturers in India. The company is engaged in the designing, manufacturing, operation, and maintenance of sewage treatment plants for hospitals of varying sizes and STP needs and volumes. CHFour continues to serve hospitals across India, helping them reduce environmental impact through hospital STPs.

Want to know more? Click here to connect with CHFour’s team.

What is Industrial Effluent Treatment and its Plant Types?

Effluent treatment is essential for any manufacturing industry. It involves removing the contaminants from wastewater to reuse the water. The industrial effluent treatment plants also enable to decrease the solid waste discharged and make the water reusable. Thus, effluent treatment plants play an essential role in purifying the wastewater, recycling it, and disposing of it.

However, there exist various types of industrial effluent treatment plants. Let’s look at them through this blog.

Types of Industrial Effluent Treatment Plants

1. ETP for Food Industry

The food and dairy industry use a lot of water and generate wastewater on a a large scale. The wastewater they generate often includes toxic, and non-toxic elements, along with contaminants and pollutants.

ETP helps remove them and process them for reuse. ETP for food industry reduces the impact of harmful these elements on the environment. ETPs employ physical, chemical, and biological treatment methods that can treat and process the parameters to the limits and control the pollution problems caused by COD and BOD. 

2. Brewery Effluent Treatment Plants

Contemporary breweries release natural water with high COD. The water released contains easily biodegradable solvent starch, sugars, unstable unsaturated fats and ethanol. Most of the waste is made up of paper, glass, plastic, oils, etc., Additionally, breweries produce surplus yeast and spent grains as by-products. Brewery ETPs Plant simplify this task treating the effluent waste efficiently.

3. Pharma Effluent Treatment Plants

Pharma companies release water containing various ingredients, solvents and substances harmful to humans and animals. The efficiency of RO helps reduce COD, BOD, and TSS to dissolve solids in pharma ETP. It neutralizes the pH of wastewater in the neutralization tank and passes the activated carbon filter to remove the colored material and recycle the water. 

4. Textile Industries Effluent Treatment Plants

The textile industry generates wastewater, containing chemicals through various processes, including dyeing, printing, etc. Textile ETPs help treat such water and allow its reuse in a natural environment. The ETPs comprise multiple treatments involving physical, chemical, and biological mechanisms. They remove about 80% of organic waste and dispose of the wastewater for further use.

5. Slaughter House Effluent Plants

Slaughter house ETPs are fully automated and designed for continuous operation. One cannot discharge wastewater generated from slaughter houses into public sewage treatment. It is because the primary pollutant sources of the slaughtering processes include urine, blood, and feces. These elements contain suspended solids and mostly toxic substances.

ETPs add a cleaning product to additives for processing. The product could include ionic or cooking tripe in the treatment to modify the production cycle and the recycling process of water and by-products.

Need an Industrial Effluent Treatment Plant for Your Company? Connect with CHFour!

CHFour is one of the leading companies in India involved in the design, manufacturing, erection, and maintenance of ETPs for a range of industries. 

The company’s several years of experience and extensive expertise in building ETP water treatment and ETP for the food industry speak for its position across India’s ETP and STP sectors. So, if you’ve been looking to build custom industrial effluent treatment for your manufacturing units, you’ve got CHFour!

Call +91 8055573883 to know more about CHFour and its industrial effluent treatment plants.

sewage treatment plants

What are the Various Types of Wastewater Treatment?

Water is the same everywhere. However, the kind of waste generated varies with the industry that produces it. Each wastewater type has characteristics that make it and its treatment unique. Here are some wastewater types that STPs and industrial effluent treatment plants handle day in and day out to contribute to environment conservation and safety.

Types of Wastewater

From municipal sewage to industrial wastewater, let’s look at the different types of wastewater.

  • Municipal Sewage

As the name implies, municipal sewage is generated from commercial buildings, households, etc. The sewage generated from showers, toilets, sinks from houses, hospitals, restaurants, etc., is termed municipal sewage. Although almost only water, domestic sewage does contain a minuscule amount of dissolved and suspended solids with microbes that can prove harmful to humans and hence requires efficient treatment.

  • Storm Sewage

Again, as the name suggests, storm sewage is the water that gushes into the city sewers after precipitation. This type of sewage contains dirt, twigs, and debris. Additionally, it includes a massive amount of organic material that the water picks up while flowing in.

  • Industrial Sewage

This is the broadest sewage type of all and comprises effluent generated from various types of industries and factories. Treating industrial sewage demands specialized industrial effluent treatment plants capable of treating chemical effluents. Let’s look at a few of the industrial sewage types.

  • Textile

Processes like dyeing, bleaching, waterproofing, flameproofing, etc., generate high volumes of chemical waste. The wastewater generated often contains a high BOD and elements like chromium, grease, oil, sulfides, etc. Additionally, the use of various dyes like mordant dyes, acid dyes, pigment dyes, etc., also contributes to a tremendous amount of wastewater that contains oil, grease, heavy metals, and phenols.

  • Pharmaceutical

Pharmaceutical sewage is often considered more complex due to its heavy chemical content. The waste contains a range of hormones, volatile organic compounds, antibiotics, etc., the accidental discharge of which can prove harmful to the human body. Besides, the drug byproducts in pharmaceutical waste have a high degree of chemical oxygen demand and biological oxygen demand.

  • Petroleum Refining and Petrochemical Manufacturing

The waste generated by these industries have a heavy concentration of metals like cadmium, arsenic, lead, mercury, chromium, etc. The wastewater generated through the various manufacturing processes has a high BOD and contaminants like phenols, ammonia, sulfides, etc.

  • Paper Manufacturing

The waste that these manufacturing units generate contains high BOD and concentrations of suspended solids. Additionally, with bleaching as part of the manufacturing process, the effluent will include elements like dioxins, furans, chloroform, etc., and usually a high COD.

Partner with CHFour for Efficient Industrial Effluent Treatment Plants

CHFour is a trustworthy company concerning industrial effluent treatment plant manufacturing, operations, and maintenance. The company also undertakes STP operation and maintenance for sewage treatment needs. In other words, CHFour can manufacture, operate, maintain and manage sewage treatment plants of various capacities.

To know more about CHFour’s STP and ETP management capabilities, services and solutions, write to or talk to the company’s experts at +91 8055573883.

How to Maintain a Sewage Treatment Plant?

How to Maintain a Sewage Treatment Plant?

In the effluent treatment and sewage treatment plant (STP) parlance, the term O&M stands for Operations and Maintenance. That makes maintenance a fundamental aspect of STP management to help it function efficiently, safely and treat wastewater effectively. While it is the responsibility of the STP service provider to ensure regular maintenance, knowing a few aspects of STP maintenance can help you manage it better.

How Frequently Should You Maintain a Sewage Treatment Plant?

You don’t have to very often service an STP, as most of them are designed efficiently enough to require minimal maintenance. However, depending on the volume handled, you must have it inspected and maintained through experts at least once or twice a year. Additionally, you must de-sludge the plant to avoid the solid build-up hindering the regular operations of the treatment chamber. However, after desludging, you must immediately fill it up with water to balance the external and internal pressure.

What are the Various Aspects Involved in Sewage Treatment Plant Maintenance?

Here are the various aspects you must check before you take up maintenance of a sewage treatment plant.

  • Inspection of mechanical parts and components to check if they require a replacement
  • Inspection of all the chambers to check if they need damage repair
  • Checking all the air filters and pipes
  • Looking for uninterrupted, unobstructed, and efficient blower and ventilation
  • Checking the color and smell of the biomass
  • Replacement of the valve boxes and diaphragms
  • Inspection of the integrity of the lid seal
  • Checking bacteria health
  • Inspection of diffuser
  • Quality of the final water check

Maintenance operations must be performed by qualified and experienced engineers accredited to a recognized governing body. Additionally, the staff must be properly trained and vaccinated to stay immune from various infections while performing crucial maintenance tasks.

Should the Plant Be Emptied Before Maintenance?

Yes. STPs should be emptied annually. It helps the service professionals wash and remove solid built-up inside the plant to function efficiently. While larger plants need to be emptied once a year, lower-budget plants may require more frequent emptying for regular cleaning and efficient functioning.

What Would Happen if Rainwater Enters the Plant?

In any case, you shouldn’t allow rainwater to enter the plant. If it does, it will flush out essential bacteria, dilute wastewater and render the whole treatment operations ineffective. Additionally, it will flood the entire system, thus resulting in a higher degree of damage and repairs.

CHFour – Partners for Sewage Treatment Manufacturing and Operations and Maintenance

Pune-based CHFour is a leading STP manufacturing and O&M company in India. The company holds extensive experience in STP manufacturing and continues to handle the operations and maintenance aspects of various types of STPs across India. CHFour employs experienced O&M resources and works with a comprehensive service and excellent quality approach to deliver customer satisfaction at all times.

The result is evident. The company that had a humble beginning has grown to become one of the most reputed names in the industry with operations across various parts of the country. To know more, call +91 8055573883.

The Role of an Industrial Effluent Treatment Plant in Society

Factories and various other production units consume a massive amount of water for manufacturing purposes. But a huge amount of the water they use is wasted and released as sewage in the nearby rivers, sea, etc.

Of course, needless to say, such water contains chemicals and other hazardous substances harmful to the environment and the water bodies that absorb it. But when treated properly through an industrial effluent treatment plant, the wastewater can be reused. Besides, industrial effluent treatment can help contribute to environment conservation. Accordingly, let’s review the role of an industrial ETP in society.

Benefits of Industrial Effluent Treatment Plant

  1. Environmental Conservation

Wastewater, the chemicals and the harmful substances present in it, when left untreated for long, interact with the environment and the surface or water body in which they are released. The toxicity in these elements can harm the environment in many ways, causing damage to the natural resources, people, and animals around.

However, the presence of an industrial effluent treatment plant around in such vicinities can help treat the wastewater, remove harmful components such as chemicals, etc., from the water. This can avoid prolonged exposure of wastewater to the environment and curtail the damage resulting from the interactions.

  1. Provision of Clean and Reusable Water

Manufacturing units generate a massive amount of wastewater, comprising high toxicity levels. However, when treated through an industrial ETP, a huge amount of the wastewater can be converted into clean and reusable water. It helps save a lot of fresh water and resolve water problems significantly. Furthermore, advanced treatment on the water can help make it fit for human consumption.

  1. Provision of Employment to Local People

Industrial ETPs demand a substantial amount of workforce for efficient and effective functioning. It requires technicians, laborers, ETP managers, supervisors, chemists, etc., to handle the various functions and verticals involved in industrial ETP operations. Depending on the daily handling capacity, the ETP can employ a significant workforce, thus generating employment to the local population to varying extents.

Additionally, setting up industrial ETPs in the required areas can help the local authorities save the millions of rupees they spend on environmental protection. Treating sewage or industrial wastewater in time can curb the pressure it exerts on the local environment. It can also contribute significantly to the ecology’s well-being.

  1. Prevention of Diseases

This one is pretty obvious. Untreated wastewater fosters a chain of reactions, the first step of which is the release of toxic material in the surroundings. These poisonous elements come in contact with human beings and animals staying in the surroundings and cause various diseases such as diarrhea, cancer in the long run due to carcinogenic substances, contagious diseases such as fever, etc.

Although one cannot completely eliminate the possibility of the onset of these diseases, timely, comprehensive, and appropriate treatment of industrial wastewater through industrial ETPs can undoubtedly help control them.

CHFour – The Trustworthy Name for Industrial Effluent Treatment Plants

CHFour Energy is one of the leading manufacturers of industrial effluent treatment plants in India. The company aims to help SMEs and industries with appropriate, effective, compliant, and timely effluent treatment to help them contribute to environment conservation better.

CHFour deals in various ETP types. They include powder coating ETP, chrome/ nickel ETP, coolant ETP, textile industry ETP, brewery ETP, pharma ETP, etc. Call +91 8055573888 to know more about CHFour’s industrial effluent treatment plants or discuss your industrial ETP needs.

How do sewage treatment plants work?

Wastewater and sewage are supplied to the primary tank, where the solids and liquids disperse. The resulting liquor flows into the biozone chamber. In the chamber, a pump airs the waste and encourages friendly bacteria to condense the organic matter. This breaks down and purifies the result.

Below information and video can show you the actual working of the Sewage Treatment Plant:

The sewage will be first screened through a bar screen and the grit chamber will Oil & grease trap to avoid entry of plastic, stones, paper in the system.

The sewage will then be collected in too underground equalization tank, this tank helps to equalize effluent flow by having diffused grid aeration system.

Further, it will be pumped into the Anoxic tank where nitrification and denitrification take place, nitrifying liquor then pumped into the   MBBR tank having fine bubble diffused aeration system.

The air will be supplied in the MBBR I & II tank with the help of Roots Blowers and fine air bubble diffusers.

Overflow of the MBBR-II tank will flow in the tube settler tank, which is a fixed and inclined type where settling of floating solids takes at a faster rate.

Sludge settled at the bottom would be recycled back into the aeration tank to maintain MLSS and the excess sludge will be disposed of with the help of a sludge disposal system.

From the tube settler, clear supernatant would overflow into the filter feed tank.Further, it will be pumped into the Pressure Sand Filter & Activated Carbon Filter. Traces of solids get trapped in the Pressure sand filter and the remaining odor and color will be removed in the Activated carbon filter. This system works as polishing tertiary treatment.

The treated water Ozonation will be collected in the Treated Water Tank.
After Ozonation treated water would be used for flushing & gardening purposes.
The excess sludge would be disposed of as per norms.

Sewage Treatment Plant (STP) – For Residential Colonies, Hotels, Hospitals, Malls, IT Companies, Industries, etc From CHFour Energy Solutions, Pune. More details on –