RESEARCH CENTER IN WASTEWATER TREATMENT AND HAZARDOUS WASTE PROCESS OF TREATMENT (CITRAR-UNI) PRE−TREATMENT TREATMENTThe Center for Research on Treatment of Wastewaterand Hazardous Waste - CITRAR-UNI started to SCREENS RAMLFA − UASBwork in 2011. Its previous name was UNITRAR , Upflow anaerobic sludge blanketwho was the pilot plant treating wastewater from the There are two screen units:one using 25-mm and ReactorNational Engineering University, which was created another with 15 mm spacing between bars. Thesein January 1996. CITRAR-UNI aims to promote units hold large solid materials which are usually This unit is divided in three parts: a digesterscientific research, with a tendency to look for carried by sewage treatment, two settlers and a gas chamber. Thealternative technologies of low-cost solution for the (bags, plastics, wastewater to be treated is distributedproblem of treatment, improper disposal and reuse of plant debris, dead homogeneously with the help of several pipes fromwastewater and hazardous waste in Peru. animals, etc..). the bottom to the top of the reactor. Inside the These wastes are reactor the wastewater cross a layer of sludgeCITRAR-UNI is located in the north part of the disposed in a blanket. This layer degrades the organic matter byUniversity Campus, called Sector G in an area of 4.5 landfill by manual anaerobic digestion through hydrolysis,Ha. Coming from the south to the north, CITRAR is operation located acetogenesis and methanogenesis. The formedlocated in the right hand side of Tupac Amaru within the plant biogas is collected in a gas chamber and theAvenue , district of Rímac (Lima, Peru). area. wastewater rises to the settlers and then it is collected in gutters. The clarified effluent goes to the stabilization ponds to continue the treatment.FEATURESCITRAR has a treatment capacity of 10 L/s. The raw GRIT REMOVAL CHAMBERwastewater is catched from SEDAPAL´s sewerage A Mariotte tank has been installed to allow thesystem, coming form the shanty towns El Angel and measurement of the production of generated biogasEl Milagro, both located in the district of in the reactor. TheIndependencia. It allows to remove the composition of thisThe treatment can achieve levels of Coliformes sand that usually carry biogas is: CH4, CO2fecales removal up to 99.99%, BDO5 up to 97.5% and away sewage. The flow and H2S.a parasite removal of 100%. Due to this, the water is horizontal, and there The CH4 (methane)produced can be perfectly used to water parks, are two alternate is a fuel that can begardens and culture fish. operating units with a exploited. rectangular section. The excess sludge is The rate of passage removed periodically from the UASB reactor for through this structure is dehydration and disposed in a drying bed. This unit controlled by a Sutro contains a filter media (sand and gravel) and a weir at the outlet of the unit. drainage system where fluids are conducted to the drainage system.
. NATIONAL FACYLTATIVE PONDS OTHER RESEARCH PROJECTS UNIVERSITY . RESEARCH CENTER WASTEWATER TREATMENT AND HAZARDOUS WASTES WETLAND ENGINEERING . The domestic wastewater after a pre- U.N.I treatment:screens, a primary treatment: septic tank is collected and send to the constructed wetlands. This treatment system is based on the horizontal sub- CITRAR-UNI surface flow of wastewater through a solid bed filter containing layers of gravel and biological activity FACULTY OFCITRAR-UNI has two facultative ponds in series,reaching a total retention period of 16 days, which provided by the growth of microorganisms in the area ENVIRONMENTALreceive the effluent from the UASB reactor. The of the rhizomes of the ENGINEERINGsecondary pond is rectangular and has a volume of emergent plants that are F.I.A7500 m3 and the tertiary pond is square and has a planted in the gravel.volume of 3750 m3. The processes taking place inponds are sedimentation, sludge digestion, aerobicstabilization of organic matter, consumption of CO2with algae photosynthesis, production of O2 and BENEFITS AND SERVICESremoval of bacteria and parasites. - Contribution to the professional technical education of students at undergraduate and post graduate level USE OF TREATED WASTEWATER in national and international institutions. - Use of treated water for irrigation of parks andIRRIGATION gardens of the campus and surrounding districts. - Use of treated water in the cultivation of fish forThe treated water is used to irrigate the gardens of the human consumption.Campus at the National Engineering University using - Promotion of scientific research in the area oftrucks of 10 m3 volume. wastewater treatment and hazardous waste by supporting the development of research theses.AQUACULTURE UNIT - Guided tours to colleges, universities and public institutions, private and overseas.CITRAR-UNI has 3 - CITRAR-UNI offers technical advisory servicesponds which are fed with and training in the treatment of domestic andthe effluent from the industrial wastewater.tertiary pond. In thisponds the specie Nile Telf. +511 4811070 (Anexo 581)Tilapia (Oreochromis Fax +511 4821585Niloticus), tropical fish Web: http://fiauni.pe/citrar CITRAR-UNIfrom in warm weather, is cultivated for human E-mail: firstname.lastname@example.org. They grow up to 250 g. in 7 months.