bids are invited for technical specification stp 55 kld based on hybrid granular sbr technology wastewater treatment plant. the stp 55 kld is based on modern technology for treatment any kind of used water plant comprises of primary treatment or secondary treatment and tertiary treatment. the plant uses sequencng bath reactors in secondary treatment for forming bid beads that is hybrid biofilmgranular sludge. unlike conventional activated sludge process the propesed biologival treatmet relinquishes the need for large sting tanks and offers saving simultaneous removal of organic carbon nitrogen and phosporous in single bioreactor. 55 kld hybrid granular hgsbr based wastewater or sewage treatment plant stp having the following specification biological wastewater treatment performs two important function waste water treatment that is removal of pollutants from sewage separation of microbial biomass and treated waste water minimum amount of land required less sludge generation less batch time two times interval of 4 hrs and no consumable biological n and p removal 30 percent to 48 percent lower energy better effluent quality odour free sewage treatment plant technology developed by bhabha atomic reasearch centredepartment of atomic energy govt of india make h2o dynamics india limited. barc will provide all the technical support to stellar in h2o for executing. biological treatment process for wwtps sequencing batch reactor is appropriate for the treatment conventional swquencing batch reactors rely on activate sludge for waste water treatment. granular sludge is capable of performing all abiological reactions for effective removal of organic carbon or nitrogen and phosphorous from wastewater in a single bioreactor tank in addition separation of granular sludge and teated waster water is carried out in the same bioreactor tank. 55 kld wastewater feed and same clean water out feed for use in inside premises are for gardening or agriculture or toilet flushing and washing a