Water cycle studies and projects

DESIGN OF RIPARIAN DEFENSES OF THE LACRAMARCA RIVER (PACKAGE R-07)

PERU

Creation of a flood protection service in the Lacramarca river basin, including technical validation, detailed design, obtention of the necessary permits, and the release of property conditions and interferences for the construction of the solutions defined in the studies at the level of the profile declared feasible.

The contract is divided into 4 sub-projects along the Lacramarca River:

– Subproject I. Section 0+000 to 3+700.
The works to be carried out in Subproject I include the construction of river defences (dikes), the construction of slopes (retaining walls), the construction of a channel system, the demolition and reconstruction of two bridges, the restoration of the affected public services and the Environmental Management-Monitoring and Control of the works.

– Subproject II. Section 3+700 to 21+900.
The works to be carried out in Subproject II include the construction of river defences (dikes), the construction of slopes (retaining walls), the construction of a chanel systems

– Subproject III. Section 21+900 to 22+050.
The works to be carried out in the Subproject III include the construction of river defences (dikes), the construction of canal systems, the construction of an irrigation return work, the construction and equipment of 3 irrigation intakes, the construction of a vehicular bridge and the Environmental Management-Monitoring and Control of the works.

– Subproject IV. Section 21+900 to 22+050.
The works to be carried out in the Subproject IV include the construction of river defences (dikes), the construction of a channel system in the Toro stream at its meeting with the Lacramarca river, the execution of the hydromechanical equipment of 45 irrigation intakes, the construction of the pedestrian walkway on the edge of the city on the east boardwalk and the Lacramarca river, the construction of the tree-lined walkway in the Av. Pescadores, the redesign of  existing housing, the construction of the Malecon to the sea, the Environmental Management-Monitoring and Control of the works, disaster risk awareness, training and archaeological monitoring of the project.

STUDIES AND DESIGNS FOR THE IMPROVEMENT OF THE INFRASTRUCTURE AND NAVIGATION OF THE ACCESS CHANNEL TO THE PORT OF BARRANQUILLA UP TO THE PIMSA SECTOR.

COLOMBIA

Development of detailed Studies and Designs, together with all the pre-contractual documents that allow the contracting of the works and the determination, management, budgeting, processing and obtaining of all the environmental requirements, permits and authorisations that are needed for the construction of the works, applying all the regulations related not only to the technical component, but also to the environmental and socio-economic ones.

The study is developed in two different scenarios: SCENARIO 1, studies concerning the original state of the canal, and SCENARIO 2, prospective studies for the future. The scope of the project covers some 38 km.

FINAL STUDY AND TECHNICAL FILE FOR THE PROJECT: EXTENSION AND IMPROVEMENT OF DRINKING WATER AND SEWERAGE SYSTEMS IN VARIOUS SECTORS IN NUEVA RINCONADA - DISTRICTS OF SAN JUAN DE MIRAFLORES, VILLA MARÍA DEL TRIUNFO AND VILLA EL SALVADOR.

The purpose of this work is to develop, on the basis of the pre-investment study at profile level, the definitive study and the technical dossier at works level, which must also take into account the designs proposed by the project “Headworks and piping for the supply of drinking water to Lima” for the infrastructures involved in both projects.

The work carried out is the drafting of the Technical File for the supply pipelines of the 3 fronts into which the project is divided: Front 1, Front 2 and Front 3.

The beneficiary population in these sectors is of 313,971 inhabitants.

DEVELOPMENT OF THE PROJECT, EXECUTION OF THE WORKS AND OPERATION AND MAINTENANCE OF THE DESALINATION PLANT AT CAMPO DALÍAS (ALMERÍA), AN URGENT ACTION APPROVED BY LAW 11/2005.

SPAIN

Design, construction, operation and maintenance of the desalination plant, located in the surroundings of the Balanegra wadi in the municipality of El Ejido (Almería), which has an initial production capacity of 30 hm3/year with the possibility of expansion of further 10 hm3/year, and of the desalinated water distribution network, which is made up of 3 sections with a total length of 40 km. The distribution network includes the construction of an initial impulsion to a 25,000 m3 tank from which water is supplied to several towns and irrigation communities from a main pipeline that ends at the Aguadulce tanks.

Maximum production 98.664 m3/day (1.141,94 l/s)
Population benefited 300,000 inhabitants
Hectares of irrigated land benefited 8.000
Desalination process Reverse Osmosis
No. of Reverse Osmosis racks 6
No. of high pressure trains 6
Type of catchment OPEN INTAKE
Pumping of desalinated water 6+1/ 675 m3/h
Pretreatment configuration 2 stages of sand filters + 1 of cartridge filters
Configuration of RO racks
Membrane 8′ spiral wound.
Tubes of 7 membranes.
233 tubes/rack in 1st pass
72 tubes/rack in 2nd pass
Post-treatment configuration Lime slurry with lime saturator + CO2 + hypochlorite
Supply line Supply line 5,028 m supply line and 32,606 m gravity line. Total: 37,634 m
Discharge pipeline 2,510 m
Regulating tank 25,000 m3
Total installed power 24,730.36 Kw

DEVELPMENT OF OPERATING REGULATIONS AND EMERGENCY PLANS FOR THE ALARCÓN AND CONTRERAS DAMS. TT.MM. DE ALARCÓN, VILLAGORDO DEL CABRIEL AND MINGLANILLA.

SPAIN

Updating  of the Alarcón and Contreras dams and reservoirs adjusting to current regulations.

• Updating of the basic studies of the uses and hydraulic behaviour studies.
• Environmental suitability studies.
• Drawing up of Operating Regulations and Emergency Plans.
• Proposal of actions and the creation of safety reports.

DEVELOPMENT OF THE SOLUTIONS STUDY, PREFESEABILITY AND FINAL DESIGN FOR THE EXTENSION AND IMPROVEMENT OF THE GENERAL SEWERAGE AND TREATMENT SYSTEM OF PLASENCIA (CACERES).

MALAGA - SPAIN

Design of the extension and improvement of  the collectors network in the city of Plasencia and the WWTP (Waste Wather Treatment Plant), drafting of the different documents that make up the Final Designt for the New Plasencia WWTP and the mainl collectors.

Expansion of the treatment capacity of the Plasencia Wastewater Treatment Plant by means of an activated sludge biological process, including a new sludge treatment and a new storm treatment, for the following flows and equivalent inhabitants:

• Average treatment flow 25,000 m3/d (289.35 l/s) (design population equivalent 145,833 population-eq).
• Peak flow in biological treatment 1.9 Qm (1979.2 m3/h)
• Peak flow in pre-treatment of 10 Qm (10416.7 m3/h)
• Peak flow in storm treatment of 3.1 Qm (3,229.2 m3/h)

Length of pipelines:

• Study of solutions: 4550 m
• Construction project: 1,176.5 m
• Plasencia: 40.663 inhabitants
• Design population: 81,323 inhabitants
• Equivalent inhabitants: 145.833 h-eq

TECHNICAL ASSISTANCE FOR THE ADAPTATION OF THE PROJECT FOR THE REMODELLING OF THE BOTTOM SPILLWAY OF THE CONDE DE GUADALHORCE DAM.

SPAIN

Adaptation to the current circumstances of the PROJECT FOR THE REFURBISHMENT OF THE CONDE DE GUADALHORCE DAM BOTTOM SPILLWAY. MÁLAGA drawn up in 2013, consisting of the refurbishment of the spillway at the bottom of the dam.

• Adaptation of the existing spillway and spillway organs.
• New spillway  with a capacity to drain more than 1,000 m3/s.
  25 m long artificial tunnel section.
• Buffer basin 116 m long, 18 m wide and between 10 and 18 m high up to the base of the spillway
• Spillway test on a reduced mode

PROYECTO CENTRAL HIDROELÉCTRICA BANDA AZUL

BOLIVIA

Consultancy services for the “Preparation of Final Design and Preparation of Tender Documents for the Construction Works, Supply of Equipment, Assembly and Commissioning – Banda Azul Hydroelectric Project”, including:

Review and validation of the Blue Band Feasibility Study (Blue Band 1).
Feasibility Design of Banda Azul 1 – With input from the Cuenca Río Pescado.
Blue Band 2 Feasibility Design.
Scenario 1: Uptake of turbined flows in Blue Band 1.
Scenario 2: Capture from Angolita compensation reservoir.
Blue Band Feasibility: Technical-economic analysis of alternatives:
Alternative 1: Blue Band Feasibility with 1 hydroelectric plant.
Alternative 2: Blue Band Feasibility with 2 hydroelectric plants.
Selection of Alternatives
Blue Band Final Design
DAM DATA

Gravity Dam
Dam Height: 68 m
Reservoir volume: 0.63 Hm3
Hydraulic tunnels: 15 km
Length of access roads: 35,2 km
Nominal power: 133.7 MW
Maximum gross head: 328,4 m
3 vertical axis Francis turbines

ESTUDIO Y DISEÑO FINAL DEL PROYECTO DE APROVECHAMIENTO EMBALSE DE RÍO NACAOME PARA AGUA POTABLE PARA EL MUNICIPIO DEL DISTRITO CENTRAL Y COMUNIDADES ALEDAÑAS

HONDURAS

Preparation of a study and definitive design of the project for the use of the Nacaome River reservoir as an emergency source for the supply of drinking water to the Municipality of the Central District, as well as to neighbouring municipalities such as Sabana Grande, San Buena Ventura, Santa Ana and Ojojona.

Existing reservoir Rio Nacaome (production): 19.50 m3/sec.
Transfer flow: 2 m3/sec.
Length of the impulsion and conduction line: 55 km.
Number of pumping stations: 6.
Nº Drinking water treatment plant: 1.
No. of water catchment works: 1.
Population served: Tegucigalpa (1.200.000 inhabitants)