1. RESEARCH CENTER IN WASTEWATER
TREATMENT AND HAZARDOUS WASTE PROCESS OF TREATMENT
(CITRAR-UNI) PRE−TREATMENT
TREATMENT
The Center for Research on Treatment of Wastewater
and Hazardous Waste - CITRAR-UNI started to SCREENS RAMLFA − UASB
work in 2011. Its previous name was UNITRAR , Upflow anaerobic sludge blanket
who was the pilot plant treating wastewater from the There are two screen units:one using 25-mm and Reactor
National Engineering University, which was created another with 15 mm spacing between bars. These
in January 1996. CITRAR-UNI aims to promote units hold large solid materials which are usually This unit is divided in three parts: a digester
scientific research, with a tendency to look for carried by sewage treatment, two settlers and a gas chamber. The
alternative technologies of low-cost solution for the (bags, plastics, wastewater to be treated is distributed
problem of treatment, improper disposal and reuse of plant debris, dead homogeneously with the help of several pipes from
wastewater 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 sludge
CITRAR-UNI is located in the north part of the disposed in a blanket. This layer degrades the organic matter by
University 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 formed
located in the right hand side of Tupac Amaru within the plant biogas is collected in a gas chamber and the
Avenue , 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.
FEATURES
CITRAR has a treatment capacity of 10 L/s. The raw GRIT REMOVAL CHAMBER
wastewater is catched from SEDAPAL´s sewerage
A Mariotte tank has been installed to allow the
system, coming form the shanty towns El Angel and measurement of the production of generated biogas
El Milagro, both located in the district of in the reactor. The
Independencia. It allows to remove the composition of this
The treatment can achieve levels of Coliformes sand that usually carry biogas is: CH4, CO2
fecales 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 be
gardens 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.

2. .
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 OF
CITRAR-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 ENVIRONMENTAL
receive the effluent from the UASB reactor. The of the rhizomes of the ENGINEERING
secondary pond is rectangular and has a volume of emergent plants that are F.I.A
7500 m3 and the tertiary pond is square and has a planted in the gravel.
volume of 3750 m3. The processes taking place in
ponds are sedimentation, sludge digestion, aerobic
stabilization of organic matter, consumption of CO2
with algae photosynthesis, production of O2 and BENEFITS AND SERVICES
removal 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 and
IRRIGATION gardens of the campus and surrounding districts.
- Use of treated water in the cultivation of fish for
The 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 of
trucks 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 services
ponds which are fed with and training in the treatment of domestic and
the effluent from the industrial wastewater.
tertiary pond. In this
ponds the specie Nile Telf. +511 4811070 (Anexo 581)
Tilapia (Oreochromis Fax +511 4821585
Niloticus), tropical fish Web: http://fiauni.pe/citrar CITRAR-UNI
from in warm weather, is cultivated for human E-mail: citrar@uni.edu.pe
consumption. They grow up to 250 g. in 7 months.