The Reconstruction Project Research On Reclaimed Water Station Of Shandong Jianzhu University

The new campus of Shandong Jianzhu University was constructed in 2005 by the UN environment programme(unep)Green Campus Toolkit team which was selected as green campus typical cases for colleges and universities.Shandong Jianzhu University was also named the first batch of "economical campus construction" demonstration of colleges and universities;water station of campus contributes to the school of water-saving aspects.Water treatment station in Shandong Jianzhu University covers an area of 1400 square meters,processing every day in the 2800 m after a/d,which can reduce the discharge of sewage into the surrounding environment 720000 m a year.It not only saves water cost of millions of Yuan,but also reduce the impact of school sewage on the surrounding environment and protect the ecological environment of the school which plays an important role in building a green campus in Shandong and the construction of a conservation-minded campus.With the expansion of the school enrollment and the sewage of Jianda garden into the campus,the demand of water quality and water reuse also increased and the original tank volume is difficult to meet the current needs.Campus of eat hutch garbage(contain a high content of carbon,nitrogen,organic matter)interceptor,the follow-up biological treatment overload operation,and because of old water station equipment,water in the water can not up to standard,COD water up to 107 mg/L,BOD5,up to 62.8 mg/L,NH4-N was 99.34 mg/L.Water station for water quality,water quantity in the ascension,according to the requirements of water station in the actual situation;design a set of feasible retrofit scheme.Water standing in the anaerobic acidification + contact oxidation + deep treatment process,modified the inversion A2 O + depth treatment technology.At the beginning of pond of new high density settling basin for pond remove larger particles suspended solids,reduce the load for subsequent structures and shorten the retention time which satisfy the demand of water increase.Transform the hydrolysis acidification pool + biological contact oxidation pool for inversion A2O(anaerobic tank + aerobic anoxic pool pool)process,transformed the hydrolysis acidification poolanaerobic tank,choice for anaerobic pool,pool for the multistage aerobic biological contact oxidation pool pool,inverted A2 O has the function of removing organic matter,nitrogen and phosphorus,sludge settleability,good treatment effect,stable water quality;Pool of biological aerated filter(BAF)in and out of the water direction from down into the water to aspirant underwater,the water to prevent the filter head congestion,and ensure the filtering and backwash effect,the blower is replace by the 75 KW to 45 KW,treatment of water increases,the energy consumption decreases,and meet the demand of energy saving;Change the drug dosing method and dosing quantity,increase the metering pump,the evenness of coagulant dosage and dosing effect.In addition,desilting repair for the original structures;Replace the old equipment and pipeline corrosion,equipment includes grating compressor,pump,blower,sludge,etc.;New distribution room and replace the power distribution cabinet;Odor diffusion and water to prevent water stop general appearance,increase the biochemical pool color steel roof and steel roof,increase the green area,replace the corroded structures railings and walk.The normal operation of the water station and the normal use of water is not affected by the transformation of the water station.After the completion of the renovation,stable discharging water,effluent COD was 22.1 mg/L,NH3-n is 0.48 mg/L,total more than 1.91 mg/L chloride,iron manganese < 0.1mg/L,< 0.05mg/L,the effluent water quality of GB/T18920-2002 "cities sewage recycling of mixed water quality standards.Not only meet the design requirements,in the equipment replacement more energy-saving than ever before,after the processing of water increases,reduced the cost of water,the project has the good economic efficiency and energy saving efficiency and the social environmental benefits.For similar campus of water in the construction process and the choice of water stop transformation,promote the beneficial reference.