Sewage Treatment Plant

Product Details:

What is Sewage?
Sewage is a mixture of domestic and industrial wastes containing 99% water, but the remainder contains some ions, suspended solids, toxic chemicals and harmful bacteria that must be removed before releasing of water into the sea.

Sewage contains organic impurities such as BOD, COD which cause bad smell and contains harmful gases. If it is not treated properly then it will lead to many irreversible problems for human & other living things.

Why Sewage treatment is necessary?
Sewage is a resource that can be recycled for various uses like gardening, toilet flushing, car wash, cooling towers. Faced with the alarming fact that over 60% of the sewage generated in our country goes untreated, with its negative impact on human health, the government is focusing on waste management through centralized sewage treatment plants and by mandating large upcoming real estate projects to have their own treatment facility.

Sewage Treatment is essential to ensure that the receiving water into which the effluent is ultimately discharged is not significantly polluted. It works on producing environmentally safe fluid waste stream and a solid waste suitable for disposal or reuse.

Excel Filtration Pvt. Ltd (EFPL)’s approach is to see wastewater as an opportunity, not a burden.

Process Description of Sewage Treatment Plant

Sewage Treatment Involves:
It involves the process of removing contaminants from wastewater and household sewage, both effluents and domestic. It includes a physical, chemical and biological process to remove physical, chemical and biological contaminants. The objective of sewage treatment is to produce a disposable effluent without causing harm to the surrounding environment and prevent pollution.

Sources of Wastewater:

• Human waste
• Washing water
• Domestic sources
• Highway drainage
• Rainfall collected on roofs, yards, hard-standings.

Product Details:

The plants are used in various Hotels, Industries, Hospitals, Colonies, IT Parks, Commercial Buildings and various other establishments. We also make sure that these plants are delivered at our clients' ends within a predefined time frame. This is done with the help of our highly prompt carriage & freight agents.

Other Details:
It helps to provide society with a healthy environment around them. Sewage Treatment Plant is a facility designed to receive the waste from domestic, commercial and industrial sources and to remove materials that damage water quality and compromise public health and safety when discharged into water receiving systems. Today, technological progress is increasingly broadening the range of possibilities offered by classic environmental protection. The ecological focus is on water protection and the multiple uses of wastewater.

We use a combination of innovative treatment processes. We facilitate the utilization of wastewater for industrial and municipal purposes and thus the conservation of resources.

Our proven and advanced processes include amongst others:

• MBBR - Moving Bed Bio Reactor
• SBR – Sequencing Batch Reactor
• MBR – Membrane Bio Reactor
• UASB- Upstream Anaerobic Sludge Blanket
• Advanced Oxidation
• Digesters

Advantages:

• Elimination of plugging.
• Design and implementation efficiencies ensure lower capital and operation costs than conventional alternatives.
• Simple media addition allows for easy plant expansion to accommodate population growth or other needs for capacity.
• The sequential batch reactor (SBR) process is a fill and draw type activated sludge process where individual reactors are filled one by one in five discrete periods i.e. Fill, React, Settle, Decant and Idle/ Waste Sludge.

Features:

• Reduce Sludge Yield
• Eliminates sludge ability issues
• High removal efficiency for Nitrogen, BOD and COD
• The fewer process to achieve a comparable effluent quality
• Small footprints, reduce land use
• Proven technology with reliable performance
• Minimum maintenance requirements
• Treated water reuse in irrigation and grey water applications
• Enhanced storage capacity
• Low maintenance cost
• User-friendly operation
• Robust construction

Applications:

• Housing projects and small communities
• Industrial Office & Parks
• Recreational camps & travels trailer parks
• Shopping Centers and Restaurants
• Mining and Extractive Industries

Product Details:

This plant is used for treating sewage or effluent generated by hospitals, institutions/commercial buildings, large colonies, hotels, and others. The entire package unit is skid mounted and can be installed near to the effluent /sewage receiving underground tank. The treated water can be reused in gardening.

Further, the plant uses all the treatments of the aerobic system.

It includes:

• Aeration by air diffuser to increase the dissolved oxygen and decrease the BOD in the effluent
• Sedimentation of biomass in tube settler
• Filtration of sewage through Pressure Sand Filters and Activated Carbon Filters
• Chlorination of sewage for disinfection

The treated effluent water can be further polished through Tertiary treatment with Filtration plant, Activated Carbon Filter and Softeners to produce clean, clear and hardness free water for reuse in the industries for Cooling Tower makeup or gardening purpose.

This Plant can treat up to 100000 Litres/day of effluent/sewage. This is the only underground tank which the client has to provide a site to collect the raw sewage/effluent.

Stages:
Pretreatment:

• Large solids (i.e. those with a diameter of more than 2cm) and grit (heavy solids) are removed by screening. These are disposed of in landfills.

Primary Treatment:

• Primary treatment removes materials that can be easily collected from the raw sewage before they damage or clog the pumps and sewage limits of primary treatment clarifiers trash, tree, limbs, leaves, branches, etc. Here settled and floating materials are scrapped off and the remaining liquid discharged and subjected to secondary effluent.

Secondary Treatment:

• Secondary treatment removes dissolved and suspended biological matter. It is typically performed by indigenous, water-borne micro-organisms in a managed habitat. It requires a separation process to remove microorganisms from the treated water before its discharge or tertiary treatment.

Tertiary Treatment:
Tertiary treatment is to provide a final treatment stage to raise the effluent quality before it is discharged to the receiving environment (sea, river, lake, ground, etc). This is a final process and also called “effluent polishing".

Technologies:
Different technologies are mentioned below:

• Aerobic Biological Treatment
• Activated Sludge Process (ASP)
• Integrated Fixed Film Activated Sludge (IFAS)/ Moving Bed Bio-Reactor (MBBR)
• Sequential Batch Reactor (SBR)
• Membrane Bio-Reactor (MBR)
• Anaerobic Biological Treatment
• Up-flow Anaerobic Sludge Blanket (UASB)
• Activated Sludge Process (ASP)

ASP is the most commonly used suspended growth aerobic process. In this process, organic matter present in the wastewater is aerated so that micro-organisms metabolize the soluble and suspended organic matter. Part of the organic matter is synthesized and form new cells and part is oxidized into CO2 and water to derive energy. The new cells formed are removed in the settling tanks and part of this settled biomass is returned to the aeration tank while the remaining is removed as excess sludge.

MBBR:

• MBBR technology works on the principle of attached growth system and uses rotating bio media to retain active biomass to reduce the influent BOD Levels.
• MBBR configuration combines biofilm and activated sludge systems for retrofitting existing plants for biological (TN) and total phosphorus (TP) removal. It tends to increase plant capacity and improving effluent quality.

Product Details:

What is Sewage?

Sewage is a mixture of domestic and industrial wastes containing 99% water, but the remainder contains some ions, suspended solids, toxic chemicals and harmful bacteria that must be removed before releasing of water into the sea.

Sewage contains organic impurities such as BOD, COD which cause bad smell and contains harmful gases. If it is not treated properly than it will lead to many irreversible problems for human & other living things.

Why Sewage treatment is necessary?

Sewage is a resource that can be recycled for various uses like gardening, toilet flushing, car wash, cooling towers. Faced with the alarming fact that over 60% of the sewage generated in our country goes untreated, with its negative impact on human health, the government is focusing on waste management through centralized sewage treatment plants and by mandating large upcoming real estate projects to have their own treatment facility.

 Sewage Treatment is essential to ensure that the receiving water into which the effluent is ultimately discharged is not significantly polluted. It works on producing environmentally safe fluid waste stream and a solid waste suitable for disposal or reuse.

Excel Filtration Pvt. Ltd (EFPL)’s approach is to see wastewater as an opportunity, not a burden. 

Process Description of Sewage Treatment Plant

Sewage treatment involves:

It involves the process of removing contaminants from wastewater and household sewage, both effluents and domestic. It includes physical, chemical and biological process to remove physical, chemical and biological contaminants. The objective of sewage treatment is to produce a disposable effluent without causing harm to the surrounding environment and prevent pollution.

Sources of waste water:

Human waste

Washing water

Domestic sources

Highway drainage

Rainfall collected on roofs, yards, hard-standings.

 

Sewage treatment generally is divided into several stages:

Pretreatment :

Large solids (i.e. those with a diameter of more than 2cm) and grit (heavy solids) are removed by screening. These are disposed of in landfills.

Primary Treatment :

Primary treatment removes materials that can be easily collected from the raw sewage before they damage or clog the pumps and sewage limits of primary treatment clarifiers trash, tree, limbs, leaves, branches etc. Here settled and floating materials are scrapped off and the remaining liquid discharged and subjected to secondary effluent.

Secondary or Biological Treatment :

 Secondary treatment removes dissolved and suspended biological matter. It is typically perform by indigenous, water-borne micro-organisms in a managed habitat. It requires separation process to remove microorganisms from the treated water before its discharge or tertiary treatment.

Tertiary Treatment :

Tertiary treatment is to provide a final treatment stage to raise the effluent quality before it is discharged to the receiving environment (sea, river, lake, ground etc). This is a final process and also called “effluent polishing.

Technologies

We adopt today’s technology developments that allow us to realize the vision and offer advanced wastewater treatment process. Different technologies are mentioned below:

Aerobic Biological Treatment

Activated Sludge Process (ASP)

Integrated Fixed Film Activated Sludge (IFAS)/ Moving Bed Bio-Reactor (MBBR)

 Sequential Batch Reactor (SBR)

Membrane Bio-Reactor (MBR)

Anaerobic Biological Treatment

Up flow Anaerobic Sludge Blanket (UASB)

Activated Sludge Process (ASP)