Implementation of advanced technical solutions of St.Petersburg Vodokanal in the city Vladimir Gvozdev Deputy Head of Water Supply Department, Engineering.

Implementation of advanced technical Implementation of advanced technical solutions of St.Petersburg Vodokanal solutions of St.Petersburg Vodokanal

in the cityin the city

Vladimir GvozdevDeputy Head of Water Supply Department, Engineering and Innovation Center

SUE “Vodokanal of St.Petersburg”

European Economic CongressKatowice, 14-16 May

Water supply system and water management

safe portable water in terms of epidemiology and radiology;

minimal environmental impact thanks to the use of environmentally safe chemicals and technologies;

responsibility before customers at present and in future through solicitous attitude to the natural resources;

energy-efficient processes;

well-qualified personnel guarantying accident-free, effective operation;

interaction with customers and awareness-raising work.

Safe water supply as a factor of favorable living environment

St.Petersburg Water Supply System Water Supply Zones of Main Water Treatment Plants

Kolpino WTP

Kronshtadt WTP

Zelenogorsk WTP

Lomonosov WTP

Northern water supply zone (589.0 km2)

Southern water supply zone (727.6 km2)

Central water supply zone (136.5 km2)

Main WTP

Northern WTP

Volkovskaya WTP

Southern WTP

WTP – water treatment plant

Dudergofskaya WTP

Description of the water supply system as of 01.01.2012

Ø water supply sources:• the Neva River– 98%• underground water and mixed source – 2%

Ø number of water treatment plants – 9Ø number of boosting pumping stations – 200

Ø length of water networks– 6 665 km

Ø daily average water supply from WTPs – 1,922.900 m3/day.

Service area – 1,453.1 km2 Served population – 4.8 mio people.

Specific water consumption 2011– 168 l/day*person

Water Consumption by the population of St.Petersburg

257

235 230 223212

195 189168 165 160 157 150

100

140

180

220

260

1997 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015

л/че

л

Удельное водопотребление в Санкт-Петербурге, л/чел*сут

Specific water consumption in St.Petersburg, l/person*day

Provision of guaranteed safe portable water to the population of St. Petersburg

- An effective water disinfection system is absent, - 78% of water is treated in a single stage process,- Environmentally hazardous chemicals (chlorine, ammonia) are applied,- Water treatment technology from specific contaminants is absent.

- Replacement of chlorine with

sodium hypochlorite at

75% of the facilities

2015

- Implementation of the UV disinfection at 72% of the

facilities- Implementation of a system

to ensure water supply security after detection of

toxic substances

20092008200620052003 2011

Increase in the percentage of water samples

meeting the standards at WTP outlets

- Reconstruction of 500, 800 and 250

thous.m3/day WTPs- Complete

elimination of chlorine

- UV disinfection of water is 100%

- Replacement of ammonia with

ammonium sulfate

- 350,000 m3/day new water treatment

block- Optimization of the water supply network

operation

- Zones of possible chemical contamination

Main WTP(20 t.)

Volkovskaya WTP(10 t.)

Southern WTP(25 t.)

Northern WTP(25 t.)

Kolpino WTP(20 t.)

2. Introduction of the integrated two-step water disinfection system:

Combination of the chemical (reagents) and physical (UV)

disinfection methods

1. Transition to water disinfection technologies with using safe eco-friendly chemicals

Chlorine

Sodium hypochlorite

Zones of possible chemical territory contamination in St. Petersburg after the chlorine container accident at WTPs as of

2003

The environmental safety of portable water at the WTPs of St. Petersburg before and after 2003

UV system Guarantee of the epidemiological water safety; “Closer to consumer” principle; Full automation of disinfection processes; The largest in Russia; Home-grown technology.

UV-disinfection of portable water

UV-disinfection units as part of two-stage water supply system

UV units

characteristics

Description

Maximum capacity 5.5 mio. m3/day

Location Before water enters the distribution system – closer to customers

UV equipment type High performance amalgam lamps

Sphere of application Water disinfection together with chemical water treatment

Commissioning 2004-2008

UV-disinfection parameters of St.Petersburg water supply system

ПНС

ПАУNaClO

(NH4)2SO4

flocculant

The Neva river

Mixers

Sedimentation tanks

filters

Clean water tank

Clean water tank

UVUV

PS-2PS-1 BPS

PAC

Disinfection of water with sodium hypochlorite. Production of sodium hypochlorite.

Overall layout.Sodium hypochlorite production plant

at Southern WTP. Overall layout.

Sodium hypochlorite production plant at Northern WTP.

Sodium hypochlorite production at Southern WTP

Sodium hypochlorite production at Northern WTP

Year of commissioning– 2008.Designed capacity of the plant– 480 tons/day.

Year of commissioning – 2006.Designed capacity of the plant – 720 tons/day.

The capacity of New K-6 Block is 350,000 m3/day

Technologies: Pre-ozonation Coagulation Sedimentation Filtration Two-stage disinfection (sodium hypochlorite with ammonium sulfate and ultraviolet)

Facilities: Ozonation chamber Mixing chamber Lamellas Dual media filters Clean water reservoirs

New water treatment block at Southern WTP (K-6 Block)

Reconstruction of Zelenogorsk WTP. Practical implementation of state-of-the-art iron and manganese removal technologies

At Zelenogorsk WTP :

• filters are reloaded and the new drainage system TRITON is installed,• the water aeration system is upgraded,• the new iron and manganese removal technology is implemented at the 2nd process stage with using catalytic oxidation of iron and manganese compounds in pressure filters,• modern chemical dosing systems and the process monitoring equipment are installed, technical processes at the plant are automated,• water is disinfected by sodium hypochlorite.

Water treatment technology at Zelenogorsk WTP

NaOClAerator Rapid filters Pumping

station-2Pressure filters

Kurortny District of St. Petersburg,

Intermorainal aquifer

Krevox European Environmental Centre: Technical solutions Equipment supply

2005 - Completion of the Zelenogorsk WTP reconstructionDesigned capacity after the reconstruction – 10,000 m3/day.

Clean water tank

Uritskaya Pumping Station

Southern WTP

Dudergofskaya WTP

St. PetersburgSouthern Water Supply Zone

Energy efficient production

1. Hydraulic model is built to optimize the operation of water networks (prevention of excess pressure, improved velocities);

2. The pumping stations, equipment and valves are modernized;

3. Automated control of PS operation and the pilot;

4. Water quality monitoring system is implemented at water networks.

Results of the Uritskaya Water Supply Zone Modernization Project

Characteristics of Uritskaya PS water supply zone Pumping station capacity – 60,000 m3/day Length of network – 170 km Number of customers – 1078 No. of stories in the serviced buildings – 1-16 No. of high-pressure boosting stations – 11 No. of house connections – 1033 No. of valves – 824 No. of fire hydrants – 498

View of the 3-lift pumping station after reconstruction

PRESSURE IN THE ZONE BEFORE PRESSURE IN THE ZONE BEFORE RECONSTRUCTIONRECONSTRUCTION

Uritskaya Pumping Station

Types of training: Compulsory training; Proficiency maintaining and professional development of staff; Distance programmes.

Training and professional development of Vodokanal personnel

Vodokanal’s Training Centre: Training and professional development of the company personnel; Training of specialists (Professional College No. 89); Contests of workmanship.

In January 2011, Vodokanal and Lahti Science In January 2011, Vodokanal and Lahti Science and Business Park established the International and Business Park established the International

Advanced Water Technologies CentreAdvanced Water Technologies Centre! ! 

Vodokanal’s information policy and customer relations

Vodokanal’s information policy is based on: Transparency of the company activities, Access to reliable information about the company history and operations, Interaction with the mass media, educational institutions, and public and environmental organizations. .

Currently, the Hot Line operators Currently, the Hot Line operators receive up to 700-800 calls a day!receive up to 700-800 calls a day!

Customer relations: Hot line, Portal “Citizens Feedback” on Vodokanal’s website.

Awareness-raising activities Youth Environmental Centre

Museum complex The Universe of Water

Awareness-raising activitiesof SUE “Vodokanal of St. Petersburg”

THANK YOU FOR YOUR ATTENTION !