ASP STP Plant in Chennai, Tamil Nadu
RRR ENVIRO SYSTEMS provides Activated Sludge Process (ASP) sewage treatment plant solutions for residential, commercial, institutional and suitable industrial applications in Chennai and Tamil Nadu.
Our services can include ASP STP planning, process selection, equipment supply, installation, commissioning, operation support, maintenance and plant upgradation.
ASP STP Technology
Activated Sludge Process is a conventional biological wastewater treatment process in which microorganisms are maintained in an aeration tank and mixed with wastewater to biologically reduce biodegradable pollutants.
- Primary Treatment
- Aeration / Biological Treatment
- Secondary Clarification
- Sludge Return
- Final Treatment & Disinfection
What is an ASP Sewage Treatment Plant?
ASP stands for Activated Sludge Process. It is a biological wastewater treatment process that uses microorganisms to treat biodegradable organic matter in sewage.
In a typical ASP system, sewage enters an aeration tank where oxygen is supplied to maintain biological activity. The mixed liquor then flows to a secondary clarifier where biological solids are separated from treated water.
A portion of settled sludge can be returned to the aeration tank as return activated sludge (RAS), while excess sludge is removed from the process.
ASP STP Design Considerations
- ✓ Average & Peak Sewage Flow
- ✓ BOD / COD Load
- ✓ Suspended Solids
- ✓ Aeration Tank Volume
- ✓ MLSS / MLVSS
- ✓ F/M Ratio
- ✓ Oxygen Requirement
- ✓ Sludge Return Rate
How Does an ASP STP Work?
The activated sludge process uses biological microorganisms, oxygen and solid-liquid separation to treat sewage.
Sewage Collection
Incoming sewage is collected and preliminary screening is provided to remove coarse solids.
Primary Treatment
Preliminary and primary treatment reduces coarse solids, grit and other unwanted materials before biological treatment.
Aeration Tank
Air is supplied through blowers and diffusers to support microbial activity in the biological reactor.
Activated Sludge
Microorganisms consume biodegradable organic matter under controlled biological conditions.
Secondary Clarifier
Biological solids settle in the secondary clarifier and clarified water flows to the next treatment stage.
Return Sludge
Settled biological sludge can be returned to the aeration tank to maintain the required biomass concentration.
ASP STP Treatment Process
A typical Activated Sludge Process sewage treatment arrangement may include the following stages.
Bar Screening
Removal of coarse floating and suspended materials from incoming sewage.
Grit / Preliminary Treatment
Removal of grit and other heavier inorganic materials where required.
Collection / Equalization
Flow balancing can be provided where variations in incoming sewage flow require equalization.
Aeration Tank
Biological treatment takes place under controlled aerobic conditions.
Secondary Clarifier
Biological solids settle and clarified water moves towards tertiary treatment.
Return Activated Sludge
Part of the settled sludge can be returned to maintain the required biomass concentration.
Filtration
Pressure sand filtration and activated carbon filtration can be provided where required.
Disinfection
Suitable disinfection can be provided before reuse or discharge according to project requirements.
Important ASP STP Equipment
Equipment selection depends on plant capacity, process design, site conditions and required treated-water quality.
Bar Screen
Removes coarse solids and floating materials before downstream treatment.
Aeration Blower
Supplies air required for biological treatment and maintains dissolved oxygen in the aeration system.
Fine Bubble Diffusers
Transfers oxygen into the aeration tank and provides air distribution for biological treatment.
Secondary Clarifier
Provides gravity settling and separation of biological sludge from clarified water.
RAS Pump
Returns settled activated sludge to the aeration tank where required by the process design.
Sludge Pump
Transfers excess sludge for further sludge handling and dewatering.
Pressure Sand Filter
Can be provided as tertiary filtration for further suspended-solid removal.
Activated Carbon Filter
Can be provided for polishing and reduction of certain organic compounds and residual odour.
Advantages of ASP STP
Established Technology
Activated sludge is a widely used biological wastewater treatment approach with established operating principles.
Effective Biological Treatment
Aerobic microorganisms can biologically reduce biodegradable organic matter under suitable conditions.
Flexible Configuration
The process can be configured according to wastewater flow, load and treatment objectives.
Serviceable Equipment
Blowers, diffusers, pumps and filtration equipment can be inspected and maintained individually.
Wide Applications
ASP systems can be considered for residential, institutional, commercial and suitable industrial wastewater applications.
Water Reuse Possibility
With suitable tertiary treatment and disinfection, treated water may be considered for appropriate reuse.
ASP vs MBBR STP
The appropriate biological process depends on wastewater characteristics, design objectives, available area and project requirements.
| Parameter | ASP | MBBR |
|---|---|---|
| Biological Process | Suspended Growth | Attached Growth + Suspended Biomass |
| Media | Normally no carrier media | Uses bio-media carriers |
| Secondary Clarifier | Generally required | Generally required |
| Process Control | MLSS, F/M, DO, SRT etc. | Media filling, DO, organic loading etc. |
| Application | Wide range of sewage treatment projects | Wide range of sewage treatment projects |
ASP STP Applications
ASP technology can be considered for a wide range of sewage treatment projects.
ASP STP Installation & Service in Chennai
Support for new ASP sewage treatment plants and existing activated sludge systems.
ASP STP Installation
Installation support for aeration tanks, clarifiers, blowers, diffusers, pumps and associated equipment.
Commissioning
Commissioning and operational assistance for new activated sludge treatment systems.
STP Maintenance
Preventive and corrective maintenance for existing ASP sewage treatment plants.
Blower & Diffuser Service
Inspection and service support for aeration blowers, diffusers and air distribution systems.
STP Upgradation
Existing plants can be evaluated for process improvement, equipment replacement or capacity enhancement.
Process Support
Support for process troubleshooting and operating parameters based on plant conditions.
ASP STP Frequently Asked Questions
What is ASP STP?
ASP STP means Activated Sludge Process Sewage Treatment Plant. It is a biological wastewater treatment process that uses microorganisms and aeration to reduce biodegradable organic matter in sewage.
How does an activated sludge plant work?
Sewage is treated biologically in an aeration tank. The mixed liquor then enters a secondary clarifier where biological solids settle. A portion of the settled sludge can be returned to the aeration tank while excess sludge is removed.
Is ASP suitable for apartment STP?
ASP can be considered for apartment sewage treatment when the process and hydraulic design are suitable for the sewage characteristics and project requirements.
What equipment is used in ASP STP?
Typical equipment may include bar screens, aeration blowers, fine bubble diffusers, secondary clarifiers, RAS pumps, sludge pumps and tertiary filtration and disinfection systems where required.
Does RRR ENVIRO SYSTEMS provide ASP STP service in Chennai?
RRR ENVIRO SYSTEMS provides ASP STP inspection, maintenance, equipment replacement, troubleshooting, commissioning and plant upgradation support subject to project scope.
How can I request an ASP STP quotation?
Contact RRR ENVIRO SYSTEMS at 9710035249 or 9962395875, or email rrrenviro1@gmail.com with the required capacity, location and project details.
Looking for an ASP STP Plant in Chennai?
Contact RRR ENVIRO SYSTEMS for Activated Sludge Process STP plant requirements, installation, commissioning, maintenance, equipment replacement and upgradation services in Chennai and Tamil Nadu.
