We offer clients aeration tanks that find usage in the beginning of secondary treatment as effluents from primary treatment still contain 35%-40% BOD. Using biological treatment process, the activated sludge method, which is suspended culture system is applied. Further, these tanks also offer provision to add urea and/or di-ammonium phosphate in the aeration tank if needed. Advantages: Retention Time: Minimum. (Depending on the characteristics of the effluent water). Purchase Cost: Lower than other systems of comparable performance. Installation Cost: Low as heavy support is not needed due to minimal load factor. Spate Requirement: Minimal Cleaning: Easy as it features self cleaning bottom .Clarity: High. 20-30 ppm of filterable solids