Shillong wastewater project, Meghalaya
Mott MacDonald has been appointed to lead a consortium that will
provide design, construction supervision and management consultancy
services on a major sewerage and waste management project in the
state of Meghalaya. We are helping State Investment Project
Management and Implementation Unit (SIPMIU) by providing all
technical and management consultancy services needed throughout the
project design and construction phases. This will range from data
collection and conducted geotechnical surveys to detailed
engineering design, cost consultancy, technical procurement advice
and construction supervision to compliance and handing over of
assets.
Mumbai sewage disposal project
750 MLD Versova pumping station, Mumbai Sewerage
Disposal Project
Preparation of a master plan for the further development of sewage
collection and treatment for the City of Mumbai (Bombay) up to the
year 2025, with an expected population of over 16 million was
entrusted to Mott MacDonald led consortium by the Municipal
Corporation of Brihan Mumbai under funding from the World Bank. The
project includes the development of demographic forecasts and the
construction of a hydraulic model for each of the seven zones,
which make up the Mumbai sewerage system. A range of options for
collection, transfer, treatment and discharge wastewater flows was
developed to allow the optimum solution to be selected. Treatment
processes were optimised for local conditions, including climate,
land take and environmental impact.
The main scope of work involved preparation of preliminary designs
for the major elements of the project, including 58km of new
sewers, 106km of upsized sewers, replacement or refurbishment of
over 60 pumping stations, seven new or extended sewage treatment
works with a total capacity of 2,600 Ml/d dry weather flow, and a
3.6m diameter outfall. An extensive slum sanitation programme
formed an important part of the master plan proposals. The project
included the screening of options using an initial environmental
examination and the preparation of a preliminary environmental
impact assessment for the preferred options.
The overall capital programme was divided into 5 five-year phases,
with a total construction cost of US$1,400 million. In addition to
advising on operations and maintenance requirements, we prepared a
financial model to ensure affordability and advice on the options
for private sector participation.
Underground drainage for western Ahmedabad
With the objective of benefiting the projected population of 1.34
million in the western region of Ahmedabad, the detailed
engineering design collection system and conveyance system along
with the design of intermediate drainage pumping stations for an
area of 44sqkm was planned.
Mott MacDonald have provided a technical feasibility report,
detailed project report, the detailed engineering design,
recommendation for collection and conveyance system along with
trunk sewer line, secondary sewer system with intermediate pumping
station as required with project monitoring. We have assured the
client of quality during project implementations and also assisted
them in filing loan application from financial institution.
Effluent systems for Vatva and Odhav industrial estates,
Ahmedabad
The assignment included feasibility study for internal effluent
collection and disposal system, detailed designing/ scheduling of
system including pumping stations, collection sumps, etc. We were
also involved in the preparation of cost estimates, tender
documents and assistance in the selection of an agency. Project
management services were included for effective commissioning of
the system and day to day site supervision. We also assisted the
client for preparation of application for filing to World
Bank.
Vasai sewerage master plan
The project consists of the preparation of a master plan for
sewerage collection, treatment and disposal for Vasai Virar region
in Maharashtra. The project includes identification of sewerage
zones, location of Sewerage Treatment Plants (STP), pumping
stations and design of the sewer network and preparation of master
plan drawings. The total area covered is 5000 hectares.
Rising main for pumping out waterThe detailed
scope of work included identification of land use based on the
development plan, estimation of sewerage flow based on the sewerage
zone layout and sewer network, locating of sewerage treatment
plants and pumping stations of the Visai Virar region. Other major
components included wastewater collection system, sump cum pump
house, rising main, sewerage treatment plant and subsequent
disposal. The project involved detailed civil, mechanical and
electrical engineering design of all the major components along
with preparation of general arrangement and structural drawings.
Common effluent treatment plants for Jhilmil and Okhla
industrial estates, Delhi
The Delhi master plan emphasises the need for a "definite
restrictive policy". It further envisages that the water polluting
industries should make individual/ joint arrangements for treatment
of the effluent. It was in this background, the Hon’ble Supreme
Court directed Delhi State Industrial Development Corporation Ltd.
(DSIDC) to carry out the construction work of CETP’s.
We were retained as consultants by Delhi State Industrial
Development Corporation to carry out qualitative and quantitative
analysis of wastewater, study the existing collection system,
layout of treatment plants, hydraulic, structural, electrical and
mechanical designs tender evaluation. It also involved preparation
of reconciliation statement, assistance in fixing of agency for
construction, scrutiny of process design, project management,
construction management and quality assurance. We also provided
advisory services during construction on all aspects of the
activities for four out of the 15 common effluent treatment plants
recommended by Council of Scientific and Industrial Research
(CSIR). The capacity of these treatment plants varied from as high
68MLD to as low as 10MLD.
