Water is the elixir of life. We drink it, we nurture our crops with it, we generate electricity with it and we are stretching our supplies to satisfy all the world’s needs…

As the world’s population continues to grow, dams, aqueducts and other kinds of reliable water infrastructure will have to be built in large scale to meet the ever increasing demand for water, particularly in the developing countries. The fastest and most economical solution to mitigate the water crisis is to enhance the productive and efficient use of water.

With greater realization and recognition for importance of water, there has been an increasingly sharper focus on its economical use and better management to meet the growing demand across sectors.

The industrial and agricultural sector which is closely linked to the economy consumes more than 50 percent of water and this need is bound to increase substantially with the rapid growth of economies. Therefore an efficient water management system calls adopting specialized technologies with comprehensive planning and management of water.

L&T – Fueling Industrial GrowthAs India’s largest engineering, technology, construction and manufacturing organization, Larsen & Toubro (L&T), has been at the forefront in creating infrastructure for a water-surplus, energy-secure and green world through its dedicated business vertical –Water & Renewable Energy Independent Company (W&RE IC).

L&T Construction, the construction arm of L&T, is India’s largest construction organization and ranked 28th globally among the top 225 contractors by Engineering News Record in 2013. The Company’s capabilities span the entire gamut of construction - civil, mechanical, electrical and instrumentation engineering and its services extend to all core sector industries and infrastructure projects. Supply, distribution, clarification and desalination projects constitute a vital thrust area for L&T Construction in the water sector.

The Industrial Water Supply BU (IWS BU) of W&RE IC has a proven track record of offering total solutions right from concept to commissioning of raw water transmission by constructing intake structures tapping water from major rivers, setting up structures and systems for pre and post

Convertingthe sourceinto a resource

treatment plants for various industries such as power, steel, petrochemical, refineries, textile/dying and leather; create infrastructure and pipeline network for distribution of water to industrial belts and treated water from effluent/sewage/waste water for reuse.

IWS BU also offers design and construction services for setting up large water projects including comprehensive lift irrigation projects in rural areas, canal systems to bring water to metros and second-tier cities and river front development projects to sustain good water flow and levels.

Sagardighi Water Pre Treatment Plant in West Bengal

Air vessels installed as a part of the Surge Protection System

Two stage biological treatment in a Sewage Treatment PlantEffluent Treatment Plant for Sinar Mas Pulp and Paper Plant in Maharashtra

Conventional Pre-Treatment

L&T’s expertise in the construction of Pre-Treatment Units for Industrial Raw Water is backed by its in-house capability to design and install equipment such as Lamella Clarifier, Tube Settler and High Rate Solid- Contact Reactor Clarifier as per the customer’s requirements.

Conventional Demineralization

Water demineralizing treatment plants set up by L&T help in removing salt deposits, minerals, nitrate and other hardness ions from water making it palatable for domestic and industrial use.

Advanced Demineralization UF-RO-DM

L&T has also forayed into advanced technologies apart from conventional demineralization plants using anion and cation exchangers. L&T offers demineralization plants with Ultrafiltration, Reverse Osmosis and mixed-bed Exchangers/ Electro de-ionization to provide consistent water quality with lesser usage of chemicals and construction resources.

Microfiltration and Ultrafiltration

L&T also helps in removing the suspended solids, bacteria through Microfiltration (MF) and Ultrafiltration (UF) with physical sieving separation process. Besides separation, this process reduces the turbidity and completes the effluent treatment process for the conventional treatment plant or act as a pre-treatment process for reverse osmosis.

Waste Water & Effluent Treatment

L&T has proven expertise in setting up Effluent Treatment Plants (ETP) and Common Effluent Treatment Plants (CETP) using advanced technologies like DAF, ACT, SBR, MBR, ASP, WAO, UF & RO for the treatment of effluent from various industries such as petrochemical and refineries, power plants, steel, tanneries etc. L&T has a skillful edge in constructing treatment plants that meets the stringent quality standards of the industry.

Sewage Recycling Plants

Sewage is a resource that can be recycled. Sources suggest that over 60% of the sewage generated in the country goes untreated and the government is earnestly sourcing for industries that can buy the sewage and treat it for their various industrial purposes.

Sewage Recycling Plants is yet another specialised area of operation in which L&T has a major presence. Several complex treatment projects have been executed using conventional to the latest UASB technology to remove inorganic and organic constituents from influent sewage.

Also, L&T has the capability to execute the most complex underground drainage network for large towns and cities. As a total solution provider, L&T has adopted latest technologies like Micro Tunnelling for waste water network and water treatment facilities with least footprint and energy consumption.

40 MLD Effluent Treatment Plant at Ankleswhar for Bharuch Eco Aqua Infrastructure Limited (A Subsidary of GIDC Ltd.)

Industrial Water Systems A Leader in Water Solutions

The potential and growth of major industrial centers including Special Economic Zones (SEZ) in metros and second-tier cities are dependent on industrial water supply schemes delivered in a commercial format.

As the leader in developing and providing water infrastructure for the country, L&T has time and again met this demand and played a significant role in this segment by executing many steadfast industrial water supply projects.

Zero Liquid Discharge Plants

L&T’s spectrum of services includes setting up Zero Liquid Discharge systems for industrial plants using most advanced treatment technologies to eliminate end effluent or discharge and effectively reuse their wastewater effluent.

Circulating Water Chemical Treatment

Circulating water is one of the important systems that affects the availability and operational efficiency of cooling towers. L&T’s expertise in setting up side stream

Water circulatory system for corex module at Jindal Vijayanagar Steel Plant,

Toranagallu, KarnatakaMicrofiltration and Ultrafiltration

Zero Liquid Discharge Plants Advanced DemineralizationConventional Pre-Treatment

filters, chemical dosing like scale inhibitors, support a trouble free cooling tower operation for the designed cycle of concentration for power plants.

Sagardighi Plant Water System for West Bengal Power Development Corporation Limited

A turnkey Contract for the execution of 120 MLD Pre Treatment Plant. 700 mm Dia MS Pipeline of 9 km length, 3×80 cum/hr De-Mineralization Plant and 4 Vertical Turbine Pumps to transfer Water at the rate of 2200 cum/hr

Utkal Alumina Odisha for Utkal Alumina International Limited

An EPC project involving laying of 700mm dia MS Pipeline for a length of 13 km and 625 cum/hr capacity Vertical Turbine Pumps

DVC Mejia West Bengal for Damodar Valley Corporation

4X800 NB Siphon pipe lines and Vacuum pump and 5 MLD Demineralization Plant

ETP BPCL Kochi for Bharat Petroleum Corporation Limited

First of its kind screw pumps to transfer effluent with a capacity of 75 cum/hr

WTP IOCL Panipat for Indian Oil Corporation Limited

120 MLD capacity with 40,000 cum of underground filter water reservoir and 4 High Rate Solid-contact Reactor Clarifier of 34m dia

CETP Bharuch Ankleshwar for Gujarat Industrial Development Corporation

6 Clarifiers of 26mdia and 2 Clarifiers of 35m & 55m each.3 Clarifiers of thickener dia-12m, 18m & 17m

WSS– Narayanpura Dam to Jindal Steel Plant for JSW Steel Limited

50 MGD WSS from Narayanpura Dam to JSW Steel Plant using 174 km of 1600 mm diameter Raw Water Mains

Industrial Water Supply of Jaypee Allahabad for JaiPrakash Associates

Diaphragm Wall Enclosure for Intake structure; Steel Pipes of 1700 mm diameter running for 21.5 kms.VT Pumps– 6250 Cum/Hr with 700 KW Motors and HSC Pumps– 3365 Cum/Hr with 700 KW Motors

Landmark Industrial Water Supply Schemes

Intake well and pumphouse with connecting bridge at Godavari River for Vizag Industrial Water Supply

Vizag Municipal Corporation proposed the diversion of Godavari waters and the Andhra Pradesh Industrial Infrastructure Corporation (APIIC) implemented the Visakhapatnam Industrial Water Supply Project (VIWSP) on a commercial format through the Public – Private Partnership route. Special purpose vehicle in the name of Vizag Industrial Water Supply Company (VIWSCO) was formed for executing this project on a Build Own Operate and Transfer (BOOT) basis.

L&T, as an EPC player, built the infrastructure that transmits water from Godavari through the Yeleru canal to meet the requirements of Visakhapatnam Steel Plant, NTPC and other industries and also succors the drinking water needs of Vizag city.

The major works involved in this project:•  22m dia Intake well•  432 MLD capacity Intake well•  2600 mm dia MS pipeline for a distance of 57 km•  8750 KW Pumping Station•  Air Vessels to control surge•  5 Vertical Turbine Pumps of 5650 cum/hr capacity

Vizag industrial Water supply a first of its kind Water Supply Project in Andhra Pradesh

Inside view of the pumphouse

Industrial Water Supply Scheme for Jaypee, AllahabadJindal Water Supply Project

Demineralization plant for

Damodar Valley Corporation, Mejia in West Bengal

Lift Irrigation Projects

In line with the country’s mission of boosting agricultural growth, L&T has executed many hallmark Lift irrigation project schemes which not only pump water from the source to the main delivery chambers but also distributes it to the field of beneficiaries by means of a suitable and proper distribution channel by means of pipelines.

Services offered include design and construction of intake wells, overhead tanks, pumping stations, distribution channels & pipelines and delivery cisterns covering civil, mechanical, electrical and instrumentation works.

Barrages

In order to regulate and stabilize river water elevation upstream for use in irrigation and other systems, L&T has constructed barrages in India across different rivers/states. The barrage also helps in diverting water and raises the water level only a few feet thus preventing flooding in high density rain prone areas.

Canal Systems

The Canal Systems in India are largely unlined and thus substantial water transmission to the destination is becoming scanty due to loss of water by seepage. L&T has, in the past decade, excelled in this area for many projects by design and construction of fool-proof lining systems for new canal and rehabilitation of existing canal and thereby saving the country’s precious water.

River Front Development Systems

L&T offers innovative solutions to the challenges of managing a river in a rapidly growing urban metropolis. River Front Development projects significantly improve the spatial structure and habitat conditions of the river and adjoining areas.

Flood Bank Protection Systems

High levels of bank erosion drastically change the appearance of rivers and also the water flow waves caused by wind or boat traffic can all scour the riverbanks, washing the earth away. L&T, in line with its vision of sustainable development, executes projects for protection of river banks and desilting which create supplementary space for storing water during inundation apart from establishing a new habitat for nature.

Earthen dam cum spillway works across river Kurket in Chhattisgarh

Large Water SystemsL&T’s IWS BU possess the domain knowledge and expertise to execute lift irrigation project schemes on EPC basis covering every spectrum of work – from transmitting bulk water through large dia pipeline network and canals to complete electro-mechanical and instrumentation works with SCADA system installations.

Kandaleru Poondi Canal

River Front Development SystemsEscape regulators on the Sai Ganga approach canal

Alisagar Lift Irrigation Project

Halyal Lift Irrigation Scheme for Karnataka Neeravari Nigam Limited

40 m long intake Transition Canal using 4 VT Pumps with a capacity of more than 10,000 cum/hr. each

GNSS Lift Irrigation Scheme for Government of Andhra Pradesh

Investigation, Design, Supply and Erection of lift system with electrical & mechanical components using 4 concrete volute pumps

Shiggaon Lift Irrigation Scheme for Karnataka Neeravari Nigam Limited

160 m intake canal and 21 m Transition canal using 4 VT Pumps of more than 2500 HP to lift water for a head of more than 90 m.MS raising main of 2000 mm dia for more than 5 km length

Vedadri Kanchala Lift Irrigation Scheme for Government of Andhra Pradesh

2 VT Pumps of discharge capacity of more than 50 cusecs to lift water over 70 m head using 1600 mm dia MS pipes for more than 1000 m length

Ramthal Lift Irrigation Scheme for Krishna BhagyaJal Nigam Limited

Execution of 2600 mm dia MS Pipe and 5 VT Pumps of discharge capacity of more than 9000 cum/hr.

Landmark Large Water Schemes

Overhead tank and pumping station for Ali Sagar Lift Irrigation Scheme in Andhra Pradesh

Halyal Lift Irrigation Scheme in Karnataka

Shiggaon Lift Irrigation Scheme in Karnataka

Through a turnkey contract, L&T executed the Ali Sagar Lift Irrigation Scheme on the right bank of River Godavari near Kosli Village in Nizamabad District of Andhra Pradesh to lift 720 cusecs of water in three stages to facilitate irrigation.

The major works involved in this project:

•   Construction of an intake pump house along with an approach channel

•   Three intermediate pumping stations, 12 vertical turbine pumps: 29000 kW, MS Pumping mains: 1800 dia - 22.4 Km, 1600 dia - 6.12  Km

•   Associated electro-mechanical works including SCADA•   Repairs & Rehabilitation works of Nizamsagar Canal

ali sagar lift irrigation scheme Irrigation water to 55,000 acres of land

Pumps with heavy duty motors Delivery for Ali Sagar Lift Irrigation Scheme

Approach Canal at GNSS Lift Irrigation Scheme in Andhra Pradesh

Ramthal lift irrigation scheme Canal at Ali Sagar Lift Irrigation Scheme

Improving Efficiency Flawless Project Management

To decrease UFW (Unaccounted for Water) and increase the flow in service mains and many connections in the major towns and cities, several Leak Detection and Rectification works have been undertaken by L&T. This unique technique has several advantages: minimizing the loss of precious drinking water, avoiding contamination, maintaining stable pressure and improving tail end supply.

At L&T Construction, the impetus for creating efficient and reliable water infrastructure is well supported by a multi-disciplinary team of professionals who cater to turnkey project requirements through meticulous planning and effective project management. IWS BU leverages on its domain expertise for providing suitable process systems / schemes to meet varying and ever-increasing customer requirements.

Typical Motor controller center panels 43.50 MLD Sewage Treatment Plant at Kavoor in Mangalore

Sai Ganga approach canal for water supply to Chennai city

sai ganga canal Water to Chennai

The Sri Sathya Sai Water Supply project executed by L&T is a landmark project in terms of magnitude, diversity and coverage. Millions of people are benefitted through this massive water supply project of national importance. As a turnkey contractor for Sri Sathya Sai Central Trust, L&T executed the Telugu Ganga /Sai Ganga Canal project to provide drinking water to the people of Chennai city. The total length of the Sai Ganga Canal from Somasila Dam to Poondi reservoir is 200km. 

The major works involved in this project were:

•   Improvements at Kandaleru Dam involved rough stone revetment of 70,000 cu.m•   Grouting works at Kandaleru Reservoir included construction of a cutoff wall up to a depth of 75.00 m

•   Sai Ganga Approach Channel•   Concrete Lining in Sai Ganga Canal at vulnerable locations•   Construction of Escapes & Regulators at three different locations•   Total canal system of 3,00,000 acres with a canal discharge•   Paver Concrete of more than 1,00,000 cum for canal lining

Intake well with approach bridge for Sri Sathya Sai Drinking Water Supply Project (SSSDWSP) in East and West Godavari Districts of Andhra Pradesh

L&T is committed to continual improvement of its business by implementing globally accepted standards of Quality and Safety Management across all its businesses and operations. Effective processes are developed to deliver high quality products and services that will meet or exceed customers’ needs. L&T seeks to go beyond compliance with regulatory

Committed to Quality and Safety

Futuristic Engineering & Design SolutionsA well-equipped design facility – Engineering Design and Research Centre (EDRC) - at Chennai, provides a broad spectrum of design and engineering services, ranging from concept to commissioning of water projects. EDRC provides time bound and cost effective system design, basic and detail engineering in process, hydraulics, civil and structural, geotechnical, mechanical, electrical and instrumentation under a single roof for water supply and distribution.

EDRC is also backed up by an exclusive Construction Methods Planning Cell (CMPC) which complements execution of water projects by providing value-added solutions aimed at cost effective construction methods by incorporating latest trends in construction technology. EDRC is ISO 9001:2008 certified and strictly adheres to its quality policy and practices. L&T has the expertise and capability that cover every aspect of executing water infrastructure projects – design, detailed engineering, procurement, project management and top-class execution with high quality and safety standards.

Advanced technologies implemented by L&T for the Industrial sector include:

• Water Treatment - High rates solids contact clarifier - Tube settler - Rapid Gravity Filter - Reverse Osmosis / Desalination

• Industrial Water Treatment - De-Mineralization - Reactor Clarifier

• Sewage Treatment - Upflow Anaerobic Sludge Blanket (UASB) - Extended Aeration - Aeration

• Effluent Treatment - Physcio Chemical Process - Aeration Process

SCADA & Leakage Control System of Water Transmission Network in Muscat

standards in pursuit of excellence in Environmental, Health and Safety (EHS) management practices, as an integral part of its total quality management system. L&T’s corporate management has enunciated policies that emphasize EHS through its structured and well defined procedures at every stage of construction that protect the environment.

Supervisory Control and Data Acquisition(SCADA)L&T has the end-to-end capability to design and install Supervisory Control and Data Acquisition(SCADA) for different Municipal Corporations of the States and helps monitor and improve the water supply distribution system through detecting, arresting and reducing leakages.

The SCADA systems installed by L&T provides Municipal Authorities complete information on water parameters such as flow and pressure of pipeline laid throughout network from the main control centre. Geographical Information System (GIS), which is extensively used to map the distribution system enables the pictorial views and also finds the shortest route to manage during disasters. L&T has the comprehensive capability and experience in executing residential engineering, supply, delivery, erection, testing and commissioning of instrumentation, telemetry and SCADA systems including construction of all associated infrastructure and operations & maintenance. The track record of successful projects implemented in different States reaffirms L&T’s commitment in preserving and managing precious water resource.

Larsen & Toubro, ConstructionIndustrial Water Supply Business Unit

5th Floor, C-Wing, TC-3, Tower-B, Mount Poonamallee RoadManapakkam, P.B.No.979, Chennai - 600 089, INDIATel: 044-2270 4904, 2252 8000 Fax: 044-2270 4949

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