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  T&T-SBR System represents a variation of the activated sludge process, the system works by bacteria which is effective in removing BOD, COD and nutrients being part of organic wastewater.
The System is unique in its ability to act as (an equalization basin), aeration tank and final clarifier by use of only one single tank, defined as "Reactor". The T&T-SBR does not allow influent wastewater to enter the reactor during the final aeration, settle and decant phases, thereby assuring an excellent quality of final effluent. Because the T&T-SBR operates in a real batch treatment mode, optimum effluent quality is obtained during each cycle. Only a fraction of the total reactor volume, typically approx. 30 %, is introduced into the reactor each cycle.
 
 
  This raw flow is combined with the acclimated biomass, which remains in the reactor at all times. The ratio of the incoming raw flow to biomass is a key factor in obtaining desired effluent quality results in each Reactor. Since only a small amount of sludge is wasted each cycle, the quantity of the biomass (activated sludge) is always maintained.
The use of a surface aerator, installed at a floating construction, guarantees trouble-free operation, easy maintenance and (by varying speed) only one equipment for aeration (high speed) and mixing (low speed)
 
 
 
- High-oxygen transfer rate and High-efficiency (2.0¢¦2.5kgO2/kWh) Process is simple due to oxygen supply and mixing of reaction tank accomplished by a floating surface aerator (SWT2000-semipermanent, material; special FRP (Fiberglass Reinforced Plastic) produced and manufactured by Sangwon EnC).
The automatic operation reduces maintenance of the reaction tank and the total operation costs are extremely low.
 
 
- Shock loads have no negative influence on the purification performance of the reaction tank due to automatic operation by DO sensor connection(PID control).
 
 
- Total site requirement is reduced from 30 to 40% compared with conventional activated sludge process.
 
 
 
- The use of microprocessor controlled phases enables the operator or engineer to vary the operating strategy of the T&T-SBR to suit the treatment requirements. Normally, the process follows the basic steps of fill, react, settle, decant, and Idle. The ability to create aerobics, anaerobics or anoxic conditions within the reactor results in flexible operation, better treatment of the waste and optimum effluent quality.
 
 
 
- Influent enters into the reactor. Complete mix of the reactor (slow speed of turbine, SWT2000) contents is achieved without the use of aeration.
An anoxic or anaerobic condition exists. This phase assists in control of filamentous organisms; and is essential for those systems which require nutrient removal. Phosphorus discharging and de-nitrification is accomplished in anaerobic/anoxic state.
 
 
 
- Influent flow is terminated, while mixing and aeration continue. Intermittent operation of the aeration system may continue to complete the nitrification /de-nitrification process or to conserve energy.
As turbine is operated by DO sensor, an appropriate DO concentration can be continued. organic matter removal, nitrification, de-nitrification, and phosphorus luxury uptake is accomplished in oxic/anoxic state.
 
 
 
- Mixing and aeration cease. Solid/liquid separation take place under perfect quiescent conditions as no inlet flow causes hydraulic disturbances.
 
 
 
- The SWT2000-turbine remains off and, at this time, up to approximately 30% of the reactor volume is decanted by means of subsurface drainage systems (Decanter). The reactor is immediately ready to receive the next batch of raw influent. A small amount of the sludge is wasted each cycle by sludge drain pump.
 
 
 
- Occurs in multiple-basin systems anytime that flow conditions are less than peak design flow. Idle is time to wait when filling of another reaction tank ends. Idle time varies depending on actual flow condition.
 
 
 
 
- The T&T-SBR of SANGWON EnC are operated according to the typical batch treatment mode, which does not allow wastewater to enter the reactor during the react, settle and decant phases. The system is able to tolerate variable organic loads because each influent liquid batch is diluted with the reactor contents from the previous cycle.
 
 
 
- Even the standard T&T-SBR can be operated for nutrient removal. No additional equipment or controls are required.
 
 
 
 
- All components of the T&T-SBR are developed and are manufactured according to the SANGWON EnC design,
a competative partner in the wastewater treatment industry for more than 10 years. Components for the T&T-SBR were strictly designed for accessibility from the top of the basin, without dewatering.
 
 
 
- Aeration is provided by SWT2000-Turbine. Those are operating as floating systems easy to remove without draining
the tank.
 
 
 
- The perfect combination of aeration and mixing by one common system guarantees the success of the T&T-SBR. The floating SWT2000-Turbine provides a powerful downflow discharge for maximum solids suspension and aeration enhancement throughout the basin.
 
 
 
- Mixing efficiency is approximately three times that of many other systems(jet, coarse bubble aeration etc.). The use of the SWT2000-Turbine at low speed enables the T&T-SBR to be operated for nutrient removal and control of filamentous organisms by providing a mixed, non-aerated environment during selected phases of operation.
 
 
 
- The System's PLC will be programmed to waste sludge at the end of every cycle, during the decant phase.
 
 
 
- The T&T-SBR is adaptable to several basin configurations, including : square, circular and rectangular.