Principle of Treatment:

Its working on the principle of Aerobic Treatment with the help of aerobic bacteria, which is most conventional and proven method throughout the world.

Treatment Steps:

• Equalization and Pre-Aeration.
• Bio-Reaction in the Aeration tank.
• Sedimentation.
• Filtration- Sand and Activated Charcoal
• Chlorination
• Sludge Drying and Disposal

We employed various treatment methodologies for SEWAGE treatment which are :

• ASP- Activated Sludge Process
• MBBR- Mixed Bed Bio Reactor
• SBR- Sequential Batch reactor
• CSTP- Combined(Effluent)Sewage Treatment Plant
• SAFF- Submerged Aerobic Fixed Film

Mixed Bed Bio Reactor MBBR

Designing and supplying of MBBR or FAB are basically for sewage & industrial wastewater treatment. MBBR system is an advanced high rate wastewater treatment process utilizing free-floating media which houses huge quantity of active Biomass in it. Essentially MBBR system is a hybrid reactor where attached growth and suspended growth activity takes place simultaneously. Fine Bubble diffusers are used with the MBBR media in suspension (specific gravity < water) giving a good air dispersal and low level of blockage due to growth of biological film. The technology is rugged and simple to operate and the units can be pre-assembled for rapid on-site installation.

Principle:

The Mixed Bed Bio Reactor (MBBR) process it works on the principle of attached growth system and uses rotating bio media to retain an active biomass to reduce the in-fluent BOD Levels.

MBBR COMBINES:

1. MBBR Reactor To degrade organics
2. Tube SettlerTo separate the Biomass
3. Polishing Filters (Optional)Achieve absolute filtration.

Advantages over Conventional ASP:

• The MBBR system is a great improvement over Conventional Extended Aeration or Activated Sludge Plants, and provides a robust and compact unit in a fully enclosed design.
• No sludge re-circulation is required to maintain MLSS as in the case of conventional aeration system.
• Can be designed to any size to deal with larger flow and loads. Around- 10 m3 to 1000 m3/day.
• Fine bubble diffused aeration used generally reduces the energy requirements as compared to surface aerators.
• The tank does not need to be drained for access to the diffusers or media.
• MBBR system takes higher shock loads without reducing the plant performance because of large quantity of MLSS available inside the reactor.
• FAB supports low sludge generation, low Adour and low Visual impact.
• Maintenance requirements are simple.
• Simple, yet sophisticated.

Sequential Batch Reactor SBR:

The Sequencing Batch Reactor (SBR) is an activated sludge process designed to operate under non-steady state conditions. An SBR operates in a true batch mode with aeration and sludge settlement both occurring in the same tank. The SBR design is a fill and draw type activated sludge process where individual reactors are filled one by one in five discrete periods i.e. Anoxic fill, React, Settle, Decant and Idle / Waste sludge. The SBR system can be designed with the ability to treat a wide range of influent volumes hence there is a degree of flexibility associated with working in a time rather than in a space Sequence.

SBR aeration system generally consists of fine bubble air diffusers. In this process, the compressed air is sheared into small bubbles creating large specific surface area for higher mass transfer efficiency between air and wastewater. SBR produce sludge with good settling properties provided the influent wastewater is admitted into the aeration in a controlled manner. An appropriately designed SBR process is a unique combination of equipment and software providing highest level of effluent quality on all parameters including BOD and Nutrient removal. Automated control minimizes the manual intervention and thus less possibility of operational errors.

Principle : SBR COMBINES

1. SBR Reactor / Aeration Tank  – To degrade organics Tube
2. Settler & Polishing Filters – To separate the biomass Achieve absolute filtration.

SBR COMBINES

Advantages:

• Better resistance to sludge bulking than other types of activated sludge systems.
• No need for external clarifiers.
• Easily adaptable to nutrient removal.
• Greater system flexibility and control than other types of activated sludge systems.
• Less land required and less processing equipment to maintain than other types of activated sludge systems.
• Greater ability to meet effluent limitations (organic and nutrient) than other types of activated sludge waste/ Wastewater treatment systems.
• Can retrofit existing tanks, basins, and ponds.

Benefits:

• Low maintenance and user friendly design.
• Eliminates all diffusers and associated network costs.
• Dual-Function capability offers independent control of aeration and mixing modes for a wide degree of process control and flexibility.
• Easy to integrate nitrification/ denitrification cycles and to facilitate biological phosphorus removal.
• Eliminates the need for separate mixers.
• Surface mounted allows for ease of inspection and maintenance.
• Tested and proven controls package.
• Eliminates final clarifiers and associated pumping.
• Multi-reactor Batch and Single-reactor Continuous Flow designs available.