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ENVIRONMENTAL MANAGEMENT, ENERGY CONSERVATION & GREEN BUILDING



 APPLICATION OF ENVIRONMENTAL    Ÿ Conservation  of  water  bodies  and  prevention  of   Kodungaiyur area falls under Zone I & II, covering an
            groundwater depletion by industries.               area of 86.14 sq. km. with a population of 16.5 lakhs (as
 FRIENDLY TECHNOLOGIES AT CITY /                               per 2011 census). There are three treatment plants of 80
         Ÿ To drought-proof Chennai during failure of monsoon.
 BUILDING LEVEL   Ÿ Reducing  the  stress  arising  due  to  vagaries  of   MLD,  80  MLD  and  110  MLD  capacity,totalling  270
                                                               MLD existing at Kodungaiyur for treating the sewage
            monsoons.                                          generated in the North Chennai & part of Central Chennai
 - by Chennai Metropolitan Water Supply and Sewerage Board, Tamil Nadu
                                                               city area and adjacent urbanised areas of Madhavaram
         CMWSSB also embarked on a unique initiative of setting
                                                               and Kathivakkam. The present generation of sewage from
         up the largest Tertiary Treatment plants in the last two
                                                               Zone I & II and adjacent urbanized areas is about 220
         years which have been commissioned and supplies 90
                                                               MLD  per  day.  Out  of  the  220  MLD,  65  MLD  of
         MLD of potable quality reuse water to the industries in the
                                                               wastewater shall be treated up to the tertiary level to get
         city every day . Chennai will become the first Indian city
                                                               the product water of 45 MLD through Reverse Osmosis
         to recycle and reuse 20% of its sewage, which will be the
 he Sewerage System for Chennai city was installed in 1917 and has been divided into 5 drainage zones.   and distributed to Industries.
         highest performance of any Indian city in that matter. 30
 These zones of macrosystems covering the entire city have independent zonal collections, conveyance,
         MLD of secondary treated sewage is being supplied to the   During  the  execution  of  the  project,  an  extensive
 Ttreatment and safe disposal facilities.  Chennai city has 12 Sewage Treatment plants at 4 locations with a
         industries from the year 1993.  On the whole, 120 MLD of   awareness campaign was undertaken on the importance
 total installed capacity of 727 MLD. Around 530 MLD of Secondary Treated Effluent is discharged into the
         freshwater supply to the industries is saved which will   of  recycling  and  reusing.  Market  linkages  were
 waterways. Chennai has a dense industrial cluster and ensuring an uninterrupted water supply is vital for their
         reduce the demand-supply gap.                         established  upfront  with  all  industrial  stakeholders  by
 viability. In  order to  supply  water  to various Industries at the Northern part of Chennai and  SIPCOT  industries
                                                               holding repeated meetings and visits to the plant to allay
 in  southwest  part  of  Chennai  city, CMWSS Board has constructed 2 Tertiary Treatment Reverse Osmosis (TTRO)   PROCESS:
                                                               all concerns about the safety and quality of reuse water.
 Plants of 45 MLD capacity each expandable to 60 MLD at Koyambedu and Kodungaiyur, including laying
         Recycle and reuse of wastewater by Tertiary Treatment   The  product  water  was  christened  as  “TRU  water”
 conveying pipeline to supply product water to the SIPCOT Industries in Irungattukottai, Sriperumbudur and
         Reverse Osmosis is a technology-driven intervention to   (Tertiary  Reusable  Water)  in  the  lines  of  Singapore's
 Oragadam and Industries in Manali–Ennore Corridor & Manali–Minjur Corridor, North Chennai.  A total of 540
         ensure uninterrupted supply of water to the industries.   'NEW  water'  for  branding.  Also,  Resident  Welfare
 industries from both Industrial corridors including thermal power plants are the beneficiaries of this technological
         Adoption  of  state-of-the-art  technology  to  address  the   Associations  were  actively  invited  for  advocacy
 intervention.  This ensures assured treated water supply and reduces the freshwater supply-demand to the industries.
         water security of the city has been the key feature of this   workshops to explain the novel concept that was being
         project.                                              adopted.
         The Sewerage System for Chennai city was installed in   MOBILISATION OF RESOURCES:
 BACKGROUND:   supply to the industries but also the letting of secondary   1917 and has been divided into 5 sewerage zones. These
 treated sewage in the waterways.                              The TTRO Plant at Koyambedu was established at a cost
 Chennai is a metropolitan city and capital of Tamil Nadu.   zones  of  macrosystems  covering  the  entire  city  have   of Rs. 486.21 crores. Rs. 231.50 crore has been received
 It has an area of 426 sq km and a population of 7.5 million.   KEY DATES:  independent  zonal  collections,  conveyance,  treatment   as Grant from GoTN under TNIPP Phase I, Rs.208.82
         and safe disposal facilities.
 While  the  water  sources  have  remained  constant,  the   Dates   Significance /Achievement  crore has been sanctioned as a grant from the Government
 demand has been steadily rising. The demand-supply gap
 01.10.2019 Commissioning of TTRO Plant at Kodungaiyur  Koyambedu area falls under Zone III, covering an area of   of India and Government of Tamil Nadu under AMRUT
 is 300 to 400 MLD per day and hunting for drinking water
 29.11.2019 Commissioning of TTRO Plant at Koyambedu  34.2 sq km with a population of 9.5 lakhs (as per the 2011   and  Rs.  30.00  crore  as  a  grant  from  GoTN  under
 was the challenge for the citizens of the city.    census). There are three treatment plants of 34 MLD, 60   CMCDM. Similarly, the TTRO Plant at Kodungaiyur was
 ESTABLISHMENT OF PRIORITIES:
 The industrial demand is around 100 MLD per day which   MLD and 120 MLD capacity totalling 214 MLD exist at   established at a cost of Rs. 348 crore.  Rs. 229.50 crore of
 is  presently  met  from  surface  water  and  desalination.   Ÿ Uninterrupted  supply  of  treated  waste  water  to  the   Koyambedu  for  treating  the  sewage  generated  in  the   which Rs. 153.00 crore as loan and Rs. 76.50 crore as a
 Around  530  MLD  of  Secondary  Treated  Effluent  is   industries, thereby facilitating industrial growth and   Central Chennai & West Chennai city area and adjacent   grant has been received from TNSUDP under World Bank
 discharged into the waterways every day . By recycling   employment.   urbanised areas of Ambattur (Part) and Mogappair. The   funds and Rs. 118.67 crore has been sanctioned as grant
 and reuse of waste water, which otherwise would have   present generation of sewage from Zone III and adjacent   from  Government  of  India  and  Government  of  Tamil
 Ÿ Introduction  of  Reduce  –  Recycle  –  Reuse  (RRR)
 been discharged into the waterways, an additional source   urbanized areas is about 120 MLD. Out of the 120 MLD,   Nadu  under  AMRUT.    The  technical  and  human
 concept for sustainability.
 of water is being generated. The establishment of TTRO   65 MLD of wastewater shall be treated up to the tertiary   resources contributed by the Engineers & employees of
 Plants has not only reduced the demand of freshwater   Ÿ Reduced contamination of waterways due to reduced   level to get the product water of 45 MLD through Reverse   CMWSSB, TWIC and the contractors M/s. BGR Energy
 discharge of waste water.    Osmosis and distributed to Industries.    Systems  Limited,  Chennai  and  M/s.  Wabag  &  IDE


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