- EA Water

Report
International Conference on Sustainable
Clean Ganga Mission: Opportunities &
Challenges
PLANNING AND DESIGN OF SEWERS
USING ADVANCED TECHNIQUES
FOR PROPOSED SEWERAGE SYSTEM OF
DISTRICT- I FOR KANPUR CITY UNDER
NGRBA PROJECT
By
Sanjay L. Lalan, J. K. Singh, A. S. Gupte
Ministry for Water Resources, River Development and Ganga Rejuvenation
CONSULTING ENGINEERS LIMITED
12 Dec. 2014
INTRODUCTION
•
National Ganga River Basin Authority (NGRBA) has taken up projects
for “Mission Clean Ganga” under which no untreated municipal
sewage or industrial effluent would be allowed to be discharged into
the river Ganga by the year 2020.
•
NGRBA Objective - to provide integrated sewerage system for
collection of sewage and providing STP for treatment before
discharging sewage into River Ganga and preventing pollution of river
Ganges and for sustainable development of surrounding areas.
•
NGRBA has taken up sewerage project initially in Allahabad & Kanpur
cities.
•
Tata Consulting Engineers Ltd. was awarded Consultancy Services for
“Technical Review, Financial Analysis and Preparation of Bid
Documents of projects under NGRBA for Kanpur District- I &
Allahabad District- A and District- C sewerage system” in November
2011.
CONSULTING ENGINEERS LIMITED
PROJECT DETAILS


Sub Project Area – (TCE prepared DPRs/Tenders)

11 wards of District-I in Kanpur

Sewerage District –C in Allahabad (including STP)
TCE provided handholding services, day to day interaction and
technical support at Kanpur and Allahabad to UPJN for DPR /Tenders
Balance 23 wards of District-I in Kanpur

Sewerage District -A in Allahabad
CONSULTING ENGINEERS LIMITED
PROJECT DETAILS

Kanpur is the biggest city of the State of Uttar Pradesh and is main centre
of commercial and industrial activities.

Kanpur city population - 29.42 lakhs (2011).

It is administratively divided into 6 zones and 110 wards.

As per Master Plan report, Kanpur city is divided into four sewerage
districts from I to IV.

In District-I, about 70% area is sewered and remaining 30% is unsewered. Area is 33.20 km2 and has 34 wards.

In unsewered area, local residents have own arrangement with septic
tanks and the effluent is discharged into nearby drains/nala which finally
discharged into river Ganga.

District-I have 25 wards in old city (inner old area) and 9 wards in northeast area and is situated on right bank of river Ganga which is mainly
residential area & famous for commercial centre and reputed institutes.
CONSULTING ENGINEERS LIMITED
KANPUR SEWERAGE MAP
DIST-I
DIST-III
DIST-II
DIST-IV
KEY MAP OF SEWERAGE DISTRICTS IN KANPUR
CONSULTING ENGINEERS LIMITED
POPULATION AND FLOWS
Kanpur City:
Census
Sewerage
Population
District
(2011)
I
9,04,280
Projected
Population
(2020)
12,11,850
Description
Population
(2011)
Design population (2050)
Design Flows
Area covered
Projected
Population
(2050)
Sewage
Flows 2020
(MLD)
21,65,601
159.96
Sewerage District – I, 11 wards
– Sub Project Area
2.36 lacs
3.06 lacs
40.39 MLD
397 hectare
CONSULTING ENGINEERS LIMITED
Sewage
Flows 2050
(MLD)
285.86
PROJECT LOCATION – SUB PROJECT AREA
SEWER NETWORK IN
PROJECT AREA,
KANPUR (DISTRICT- I)
CONSULTING ENGINEERS LIMITED
CONTOUR LEVELS OF SUB PROJECT AREA
Terrain Variation of 11
Wards in Sub Project
Area, Kanpur
CONSULTING ENGINEERS LIMITED
PROJECT DETAILS – SUB PROJECT AREA

11 wards of District –I are having narrow streets and busy and
congested area.

106km of existing sewers. Most of the existing sewers are RCC Pipes.
Large sized sewers are of Brick Masonry egg shaped sewer.

Sewage from 11 wards is proposed to be connected to trunk sewers
located along the Mall Road (Parade-Bada chauraha-Phool Bagh road)
and leading to Jajmau STP.

Old trunk sewer (1000 mm dia) and another new trunk sewer (1000mm1200mm-1400mm dia) along Mall Road.

Due to already defined invert levels of existing trunk sewers, the efforts
made for connecting sewers of 11 wards by gravity to existing trunk
sewers.

Sewer network was optimized using software with minimum pumping
station and avoiding deep excavation. Hydraulic design of sewers is
done using SewerCAD software.
CONSULTING ENGINEERS LIMITED
PROJECT DETAILS

Sewage Pumping Station has been proposed near Chacha Nehru
Hospital to avoid the deep sewer excavations in downstream area.

There is a local depression in Patkapur area, where ground levels
are in the range of 119.75 to 122.00m compared to surrounding
ground levels of 124.00m. Lift Station is proposed to pump sewage
to nearby outfall.

For utilisation of existing sewers in project area, extensive survey
and data collection was carried out in the field to assess the
condition of sewers.

Interacted with ULBs for required information such as sewer
collapse, choking, overflow, etc. and verified existing alignment at
site and its connectivity.
CONSULTING ENGINEERS LIMITED
SURVEY OF EXISTING SEWERS
Physical survey was done for obtaining details of existing sewers. The sewer
condition (including manholes) were observed physically by opening
manholes.
CONSULTING ENGINEERS LIMITED
PROJECT HIGHLIGHTS






Existing sewers which were in good condition and laid within past
15-20 years, are utilized in overall planning and designing for next
30 years horizon.
Silted sewers which are in good condition are proposed to be
used after desilting.
Heavily silted sewers are being discarded.
Sewers of 400mm dia. and above sizes are proposed for internal
lining by rehabilitation techniques.
 GRP slip lining for egg-shaped sewers
 Polyurea coating for circular sewers
Trenchless technology for laying of new sewers in busy road
crossings and speedy execution
At narrow streets, the use of HDPE pipes and pre-cast RCC
manholes is proposed to speed up the work.
CONSULTING ENGINEERS LIMITED
LINING OF EXISTING SEWERS AND PIPE JACKING
A – Existing sewers
after desilting
PIPE JACKING
B - Installing
Liner
ALIGNMENT CHECKING WITH LASER
C - Rehabilitated
Sewer after grouting
D – Cross section of
Rehabilitated Sewer
LAYING OF PIPE USING
TRENCHLESS TECHNOLOGY
CONSULTING ENGINEERS LIMITED
PROJECT HIGHLIGHTS

During execution stage, Contractor shall first have to carry out
detailed condition assessment survey for sewers and obtain
concurrence regarding their utilization from the Department.

Egg-shaped brick sewers are proposed to be rehabilitated with
GRP segment pipes. For this, the Contractor will require to carry
out CCTV survey, submit the assessment report and provide GRP
segment lining for identified stretches.

Similarly, for circular sewers the Contractor will require to carry
out CCTV Survey, submit the assessment report and provide
polyurea coating for identified stretches.

Wherever, existing sewers are to be replaced by new sewers, the
existing system will continue to operate by sequential construction
program and temporary pumping so as to minimize the
inconvenience to users.
CONSULTING ENGINEERS LIMITED
DESILTING, PRECAST MANHOLES AND MULTIPLE
HOUSE CONNECTIONS
METHODOLOGY FOR DESILTING
PRE CAST CONCRETE MANHOLE
MULTIPLE HOUSE CONNECTIONS
WITH SINGLE ROAD-SIDE CHAMBER
CONSULTING ENGINEERS LIMITED
PROPOSED SYSTEM
Description
Design Year
Design population
Area covered
Sewer Network –
Proposed
Sewage Pumping
Station – Proposed
Rehabilitation of
existing sewers
Kanpur City (Sewerage District – I, 11 wards)
2050
3.06 lacs
397 hectare
Length - 62 km (RCC NP3 / HDPE PE-100 PN 6.0)
Sizes – 150 to 700mm dia.
- One SPS (peak flow capacity: 9.26 MLD)
- One Lift Station (peak flow capacity: 2.14 MLD)
- De-silting of existing sewers- 17 km (sizes– 150
to 200mm dia.)
- Rehabilitation of existing circular and egg
shaped sewers- 3 km
 Circular sewers sizes– 400 to 900mm dia.
 Egg shaped sewers sizes – 18’’ x 27’’ / 20’’ x 30’’
CONSULTING ENGINEERS LIMITED
PROJECT HIGHLIGHTS
 Prequalification and Tender documents are prepared as the World
Bank guidelines.
Prepared project level procurement plan and detailed capital cost
for the project.
Undertaken detailed financial viability analysis.
 Prepared financial models for service provider in Allahabad and
Kanpur for sub project area and also a Framework for Financial
Modeling which can be applied in later stages of the project.
 Project Economic analysis which included computation of
Internal Rate of Return and economic benefits by establishing
baseline terms of the amount of pollution in the river and
characteristics of the effluents.
CONSULTING ENGINEERS LIMITED
PROJECT BENEFITS

With proposed sewerage system,
 Prevention of Pollution of River Ganga.
 Public inconvenience and traffic interruption will be minimized.
 Resource conservation by reducing the requirement for
procurement of new pipes.
 Construction time will be reduced by around 6 months by
avoiding major pipe trench excavation & laying work and
procurement of new pipes.
 Better environment and hygienic condition.
 Uplift the social standards of residents and human dignity.
 Avoiding the chances of damage to foundation of nearby
structure.

UPJN Kanpur DPR for remaining 23 wards (of length about
400km) is prepared on similar approach.
CONSULTING ENGINEERS LIMITED
PROJECT COST
Sl.
No.
1
Components
Project Cost
(Rs. In Crores)
Sewerage System in 11 wards of District-I in
75.01
Kanpur
2
Sewerage System in Balance 23 wards of
397.31
District-I in Kanpur
3
Sewerage system in District –C in Allahabad
147.67
4
Sewerage system in District –A in Allahabad
288.94
5
14 MLD STP in District –C in Allahabad
Total Project Cost
42.24
951.17
CONSULTING ENGINEERS LIMITED
CURRENT STATUS OF PROJECT
 The project has been approved by NGRBA in
Empowered Steering Committee meeting in 2014 for
implementation.
CONSULTING ENGINEERS LIMITED
THANK YOU
CONSULTING ENGINEERS LIMITED

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