SEWAGE TREATMENT PLANTS
We have provide Consultancy, Design, AMC, Maintenance, Manufacturing, Supply, Installation and Commissioned projects in technologies such as Activated Sludge Process, Extended Aeration Technology, SAFF Technology, FAB & MBBR Technology, and SBR Technology.
Activated Sludge Process Plant is a process for treating sewage and industrial waste-water using air and a biological flock composed of bacterial and protozoa. In activated sludge process waste water containing organic matter to aerate in an aeration basin in which Micro – Organism metabolize the suspended and soluble organic matter. Part of organic matter is synthesized into new cells and part is oxidized to CO2 and water to drive energy. In activated sludge system the new cells formed in the reaction are removed from the liquid system in the form of a flocculent sludge in settling tanks. A part of this settled biomass described as activated sludge in returned to the aeration tank and the remaining forms waste to excess sludge.
of a flocculent sludge in settling tanks. A part of this settled biomass described as activated sludge in returned to the aeration tank and the remaining forms waste to excess sludge.
The Extended Aeration Process, a modification of the Activated Sludge Process, effectively treats the contaminants in wastewater. The standard basis of design includes an aeration system, providing a 24-hour detention time and a final settling tank, with an effective 4-hour detention time. Diffused air is introduced into the aeration tank, this provides the proper environment for the development of aerobic bacteria. These bacteria thrive on the materials contained in the wastewater. The prolonged period of aeration, in addition, oxidizes a portion of the solids in the system. Oxygenation by diffused aeration provides operating flexibility and standby reserve to meet the demanding requirements of varied package plant applications.
Submerged Aerobic Fixed Film Technology Plant is based on aerobic growth process and used in the waste water treatment plant. The aeration tank contains polymer based bio-media fixed into the tank. The aerobic environment in the SAFF is achieved by the use of fine bubbles diffused aeration equipment, which also serves to maintain the mixed liquor in a completely mixed regime. The mixer of new cells and old cells overflows in a secondary sedimentation tank, where the cells are separated from the treated waste water. A portion of the settled cells in recycled to maintain organisms in SAFF Reactor and the remaining portion is wasted to aerobic sludge digester cum thickener tank for further treatment.
The MBBR System is the latest advance in attached growth aerobic biological treatment technology. MBBR employs (RING PAC MEDIA) neutrally buoyant bio-film carrier elements to achieve outstanding BOD/COD removal productivity from a compact bioreactor. In MBBR the liquid to be treated is pumped through a bed of small media at a sufficient velocity to cause fluidization. In the fluidized state the media provide a large specific surface for attached biological growth and allow biomass concentration to develop.
The Sequencing Batch Reactor process (abbreviated SBR procedure) is a variation of the conventional activated sludge process. The SBR consists of a reaction chamber which first operates as a biological reactor and then as sedimentation chamber. Unlike reactors where the wastewater flows through continuously, the SBR is filled and emptied discontinuously. The conventional physical separation of the biological processes and the sedimentation is replaced by a chronological one. The cycle starts with the filling phase where the first decomposition processes start under anaerobic or anoxic conditions. In the actual decomposition or reaction phase, the reactor is ventilated. Depending on the cleaning target, unventilated phases can be projected as well. Afterwards, in the sedimentation phase, the activated sludge sediments and the Clear water layer develop. The supernatant Clear water is removed in the sedimentation phase. Then, the cycle starts from the beginning. A separate secondary sedimentation is not required in the SBR process
Pre-Engineered modular component such as diffused air blower , aeration tanks, sludge holding tanks, waste water clarifiers / tube-settler units and disinfection unit allow for the package waste water treatment plant to be sized specifically for the customer’s application. They can be designed to handle a variety of influent flow rates and BOD loading to meet discharge requirements. They are ready to operate, pre-fabricated solution of outstanding performance and efficiency.
Packaged STP are ideal for the following application:
Capacities ranging from 5 to 100 KLD.
