Revised Action Plan for rejuvenation of Polluted River Stretches Dhansiri (Priority I)

ACTION PLAN FOR REJUVENATION OF RIVER DHANSIRI IN NAGALAND

 PREPARED BY: RIVER REJUVENATION COMMITTEE

CONTENTS

  1. Introduction
  1. Objective of the Action Plan
  1. The Basis of Proposed Action Plan for rejuvenation of polluted river Dhansiri in Nagaland
  1. Components of Action Plan

Source Control

  1. Industrial Pollution Control
  2. Channelization, treatment, utilization and disposal of treated domestic sewage
  3. Solid Waste Management
  4. Flood Plain Zone
  5. Ecological/Environmental Flow (E-Flow)
  6. Treatment of sewage
  7. Flood Plan Zone (FPZ)
  8. Monitoring of Action Plan

Action plan for rejuvenation of River Dhansiri in Nagaland

*Click on annexures to download

Annexure 1 : Map showing Dhansiri River and its tributary, major    drains (polluting source) and location of sewage treatment plant of ongoing sewerage scheme “Pollution abatement of river Diphu and Dhansiri at Dimapur Town, Nagaland.

Annexure 2 :  Letter from MoEF&CC to PHED regarding extension of time of completion of the project “Pollution abatement of river Diphu and Dhansiri at Dimapur Town”.

Annexure 3 :  Letter from PHED to MoEF&CC for extension of time for completion of the project “Pollution abatement of river Diphu and Dhansiri at Dimapur Town” & quarter-wise fund requirement chart.

ACTION PLAN FOR REJUVENATION OF RIVER DHANSIRI IN NAGALAND

1. Introduction

The River Dhansiri is the main river of Dimapur district of Nagaland. It originates from Laisang peak in Peren district and flows through a distance of 352 km from south to north before joining the Brahmaputra on its south bank. It has a total catchments area of 1220 km².The water quality of River Dhansiri and its tributaries is being monitored at six locations on monthly basis by the Nagaland Pollution Control Board under National Water Quality Monitoring Programme (NWMP). Dimapur city and its neighboring towns and villages contributes pollution load in river Dhansiri.

Water Monitoring Stations at River Dhansiri and its tributaries

District Latitude & Longitude Monitoring Location Photos
Dimapur 25˚53.21′ N 93˚44.15′ E Full Nagarjan, Dimapur
Dimapur 25˚54.77′ N 93˚44.58′ E Bridge near Purana Bazaar, Dimapur
Dimapur 25˚55.66′ N 93˚44.832′ E Near check gate (Dimapur-Khatkhati Road)
Dimapur 25˚54.22′ N 93˚40.90′ E Town boundary bridge (Diphu road) Dimapur
Dimapur 25˚55.28′ N 93˚43.49′ E Nuton Bosti, (Naga Cemetery) Dimapur, Nagaland
Dimapur 25˚557.11′ N 93˚45.46′ E Nagaland – Assam border, Dimapur, Nagaland

Biochemical Oxygen Demand (BOD) is one of the most common measures of pollutant organic material in water. BOD indicates the amount of permissible organic matter present in water. As per the National Water Quality Monitoring Programme report on Dhansiri River, it states that the organic pollution measured in terms of bio-chemical oxygen demand (BOD) varying on different points or sources in Dimapur. There are no major polluting industries in Dimapur that discharges effluents in large quantity to cause serious contamination. Therefore, the main source of pollution is due to domestic waste and municipal sewage which is being dumped and flows into the nullahs & river. All sorts of waste and untreated sewage are released randomly into the Dhansiri River in absence of a sewage treatment facility.

The details of the Dhansiri river are as follows:

Name of the rivers/streams Details Identified polluted stretches Priority wise
Dhansiri

(Nagaland)

River Dhansiri originates from Laisang peak in Peren district and flows through Dimapur. It flows through a distance of 352 km from south to north before joining River Brahmaputra. Polluted stretches are tributaries & drains of Dhansiri and downstream of Dimapur city. I

2. Objective of the Action Plan

It is an important aspect for revival of river Dhansiri in context of its utility as it is an important Perennial River. The ultimate goal for beneficial use of river will determine the level of actions to be taken for maintaining the water quality. Under the present circumstances, it appears that river Dhansiri may serve the purpose of drinking, bathing and irrigation and for this objective, municipal sewage generated should be treated properly.

The requirement of river water quality for wild life and fish propagation also requires more stringent conditions and river water quality has to maintain adequate Dissolved Oxygen (DO) content so as to support survival of fish and other aquatic life. Municipal sewage which flows to River Dhansiri should be treated to meet the effluent discharge stipulated under Schedule – VI of the Environment (Protection) Rules, 1986, is given below in the table.

Suggested criteria for irrigation, wild life and survival of fish life

Sl.

No

Parameters Class ‘D’ Water Quality Criteria –for Propagation of Wildlife and Fish Class ‘E’ Water Quality Criteria for Irrigation
1 pH 6.5 to 8.5 6 to 8.5
2 Dissolved Oxygen (DO)    ≥ 4.0 mg/l
3 Sodium Absorption Ratio < 26
4 Boron < 26
5 Free Ammonia < 1.2 mg/l
6 Electrical Conductivity at 25 º C µmhos/cm < 2250

 

3. The Basis of Proposed Action Plan for rejuvenation of polluted river Dhansiri in Nagaland 

  • Analysis reports of Nagaland Pollution Control Board & Central Pollution Control Board.
  • Hon’ble NGT Order dated 03.08.2018 in the Matter of Paryavaran Samiti and Anr. V/s Union of India Ors. (OA. 593 of 2017, WP (C) 375 of 2012.
  • Order of the Hon’ble NGT (PB) New Delhi, titled “More river stretches are now critically polluted”: CPCB (OA. 673/ 2018 in the matter of news item publish in the Hindu authored Shri. Jacob Koshy.

The National Water Quality Monitoring Programme under the Ministry of Environment and Forest and Climate Change has listed Dhansiri river, running along the stretch of Dimapur, under the category of ‘Polluted Rivers’ (Priority I)in the country indicating that the water quality of Dhansiri river is degrading further beyond human consumption or even bathing.

4. Components of Action Plan

The proposed action plan covers following components:

Source control

Source control includes industrial pollution and disposal of domestic sewage as detailed below:

4.1. Industrial Pollution Control

  • Inventorization of industries
  • Category of industry and effluent quality
  • Treatment of effluents, compliance with standards and mode of disposal of effluents 
  • Channelization, treatment, utilization and disposal of treated domestic sewage 
  • Identification of towns and villages in the catchment of river Dhansiri and estimation of quantity of sewage generation.
  • Storm water drains now carrying sewage and sullage joining river Dhansiri and interception and diversion of sewage to STPs.
  • Treatment and disposal of septage and controlling open defecation.
  • Identification of towns and villages for installing sewerage system and sewage treatment plants.

4.2. Solid Waste Management 

  • Collection, segregation, transportation, disposal and treatment of municipal solid wastes generated from town in accordance of provisions of the Solid Waste Management Rules, 2016.
  • Restriction of illegal disposal of solid waste along the river bank and flood plain zones.
  • Burning of solid waste should be strictly prohibited.
  • Construction and demolition wastes should be disposed in designated areas and no case it should be disposed into river beds or flood plain zone.

4.3. Flood Plain Zone 

  • Regulating activities in flood plain zone.
  • Management of Municipal, Plastic, Hazardous, Bio-medical and Electronic wastes.
  • Afforestation in the catchment and aesthetic plantation programs.
  • Improve irrigation practices.

4.4. Ecological/Environmental Flow (E-Flow) 

(a)        Issues relating to E-Flow

(b)        Irrigation practices

5. Treatment of sewage

  • Department of Water Resources would undertake measurement of flow of the drains formulate detailed project report (DPR) for each drain and corresponding town.
  • The flow in each drain should exclude monsoon flow. Further, any drain if receiving fresh water from any escape channel etc, should be examined for its diversion rather than mixing with sewage.
  • Sewage Treatment Plants for each town and related drains should be properly designed with the interception and diversion plan.
  • Sewage Treatment Plant (STP) and its design should be based on its full utilization capacity and ensuring simultaneous house connections to sewers as applicable to each drain and town.
  • Sewage Treatment Plan should also consider treatment and disposal of sewage from Villages including discharges from toilets constructed under Swachh Bharat Abhiyan.
  • Hotels/Restaurants particularly located on road-side should not dispose untreated sewage and solid waste into nearby public drain or rivers. Such establishments should be properly regulated and levied with fines in case of any violation.

6.Flood Plan Zone (FPZ)

Department of Water Resources should identify /demarcate Flood Plain Zone and regulate the activities. Such regulations would also cover;

  • Plantation in Flood Plain Zone (FPZ) – By Department of Environment, Forests & Climate Change
  • Checking encroachments-By District/Local administration
  • Prohibition of disposal of municipal and bio-medical waste particularly in drains-By District administration/Dimapur Municipal Council;
  • Department of Water Resources, Government of Nagaland may notify FPZ – within one year.

7. Monitoring of Action Plan

In compliance with the order passed on OA No. 673/2018 dated 20.09.2018 by the Hon’ble National Green Tribunal (NGT) Principal Bench, New Delhi, “River Rejuvenation Committee” was constituted by the Governor of Nagaland, vide Notification No. FOR/NPCB-27/6/18, dated 2nd November, 2018. The Committee shall function under the supervision and coordination of Principal Secretary, Environment, Forests and Climate Change. Action Plan for River Rejuvenation of polluted river stretches shall be prepared and monitored by the Committee.

River Rejuvenation Committee:-

  1. Director, Urban Development Department             –           Member
  2. Director, Industries & Commerce             –           Member
  3. Chief Engineer, Public Health Engineering Department –           Member
  4. APCCF, (Environment, Forests & Climate Change             –           Member
  5. Member Secretary, Nagaland Pollution Control Board –           Member Secretary

8. Action Plan – Short Term and Long Term Action and the Identified Authorities for initiating actions and the time limits for ensuring compliance 

Short term and long term action plans and the implementing agencies responsible for execution of the action plans and the time limits are given in the table below.

9. PHOTO SECTIONS

muncipal wast dump

dimapur-municipal-waste-dump

  

 

8. ACTION PLAN FOR REJUVENATION OF RIVER DHANSIRI IN NAGALAND

Sl. No Action Plan for rejuvenation of River Dhansiri Execution Agency/ Department Time Target Amount (in rupees) Remarks
1 (i)           Gravity sewer (300 mm to 1200 mm dia) Interception & Diversion works:
Interception of major drains of Dimapur Town (Lengri Nalla, Hospital Nalla, Dhobinalla and Sugar Mill Nalla) contributing to Dhansiri River pollution and diverting it to the STP.

(ii)         Sewage Treatment Plant of 25.43 MLD capacity based on Waste Stabilization Pond Technology.

(iii)       Laboratories & equipments for monitoring the quality of effluent.

(iv)       Low Cost Sanitation:

a)      Community latrines with 12 seater capacity (17 Nos)

b)      Public lavatory with 3 seater capacity (16 Nos)

(v)         Afforestations along the STP surrounding areas and in catchment areas along the Dhansiri River.

(vi)       Public awareness programme.

Public Health Engineering Department 30th June, 2021

 

82.80 Crores

Sanctioned by MoEF& CC

Ongoing project

The project “Pollution abatement of rivers Diphu & Dhansiri” was approved and sanctioned by Ministry of Environment, Forests & Climate Change under National River Conservation Plan with sharing pattern 70 (Centre) : 30 (State)

Pollution Abatement Project 44.91% of physical work in progress. (Annexure I)

An appeal for extension of time for completing the project is made to MoEF & CC till 30th June, 2021.

2 Utilisation of treated waste water

1.      Irrigating the nearby plantation areas within the vicinity of Sewage Treatment Plant.

2.      Sprinkling the road construction site to control dust pollution.

3.      Flushing/cleaning of sewage drains.

4.      Fire brigades

1.   Public Health Engineering Department

2.   Dimapur Municipal Council

3.   Nagaland Fire and Emergency Services Department

30th June, 2021 After commissioning the project “Pollution abatement of rivers Diphu & Dhansiri” utilization of treated waste water will be started.
3 Map showing Polluted River, its tributaries, drains, major towns, industrial estates, location of STPs/CETPs Enclosed Ongoing project as Sl. No. 1 (i) (Annexure I)
4 Solid Waste Management Project Dimapur Municipal Council 31st June 2021

 

 

 

 

113 Crores A Solid Waste Management Project has been sanctioned under Swachh Bharat Mission by Ministry of Urban Development. Development of the scientific waste management facilities for Dimapur City will include Recycling Plant, bio-fertilizer production, particle board from waste matters and bricks will be manufactured. Only 5 to 10 % of the waste will land filled.
5 Providing two waste bins for segregation of dry and wet waste Dimapur Municipal Council Completed Dimapur Municipal Council has provided 70428 nos. of two waste bins (green & blue) to every household for segregation of dry and wet waste at source in 2018 under Swachh Bharat Mission.
6 Bioremediation of Dimapur Municipal Council dumpsite Dimapur Municipal Council On-going Bioremediation process is implemented by the DMC with the technical support from Dr. Ragini Jain, Founder & CEO Geetanjali Envirotech & National Technical Expert in Swachh Bharat Mission India, SA UNEP Tech Partner, Member of ISWA.

Bioremediation process will be continued till the Solid Waste Management Project under Swachh Bharat Mission by Ministry of Urban Development is completed (mentioned in Sl. No 2)

7 Construction of community toilets at vulnerable areas Dimapur Municipal Council Completed Dimapur Municipal Council under Swachh Bharat Mission (Urban) constructed 40 nos. of Community toilet in Dimapur.
8 Construction of Septage Management at Dimapur Dimapur Municipal Council Completed Rs. 15,22,000/- Dimapur Municipal Council had constructed Septage Management Plant of 30 KLD capacity at Burma Camp, Dimapur under AMRUT SAAP – I. The Septage Management Plant is in operation.
9 Detailed gap analysis w.r.t water consumption (including ground water consumption), sewage generation, existing infrastructure in the catchment area of the and the gap analysis; 1.   Public Health Engineering Department Ongoing project

Sewage Treatment Plant with a capacity of 25.43 MLD is under progress as a part of Sl. No. 1 (i)

10 Detailed gap analysis w.r.t industrial water consumption, wastewater generation, existing infrastructure for treatment of industrial effluent (both captive ETPs/CETPs and their performance assessment), gap analysis w.r.to the industrial effluent management in the catchment area and construction of CETP wherever feasible. 1.   Department of Industries & Commerce

2.   Nagaland Pollution Control Board

Completed 1.   There is no such big industries consuming and generating waste water.

2.   There is one ETP ie. “Modern Abattoir” (Slaughter house) which is in operation.

3.   There is no Common Effluent Treatment Plant in Nagaland.

11 Inventory (Assessment, quantification and characterization) of waste on E-Waste & Plastic waste Nagaland Pollution Control Board Completed Nagaland Pollution Control Board has completed inventory, assessment, quantification and characterization of E-Waste & Plastic waste in 2018.
12 Quantification and characterization of waste industrial hazardous waste, bio-medical waste Nagaland Pollution Control Board 31st July 2019 6 lakhs Nagaland Pollution Control Board will seek financial assistance from CPCB under Environmental Compensation to undertake the detailed inventory of industrial hazardous waste & bio-medical waste.
13 Latest Water quality of polluted river, its tributaries, drains with flow details and ground water quality in the catchment of polluted river; Nagaland Pollution Control Board Ongoing

Regular monthly monitoring under National Water Quality Monitoring Programme

Nagaland Pollution Control Board  monitor and analysis water quality of River Dhansiri regularly every month and results are sent to CPCB through EWQDES and upload in the NPCB website npcb.nagaland.gov.in
14 Aspects such as ground water extraction, adopting good irrigation practices, protection and management of Flood Plain Zones (FPZ), rain water harvesting, ground water charging, maintaining minimum environmental flow of river (by having watershed management provisions), plantation on both sides of the river, setting up biodiversity parks on flood plains by removing encroachment, proper interception and diversion of sewage carrying drains to Sewage Treatment Plant (STP), upgradation of existing sewage treatment plants if not in a position to comply with effluent discharge norms, emphasis on utilization of treated sewage so as to minimize extraction of ground or surface water be included.

Plantation on both sides of the river and in the private land and individual land owner

1.   Ground water extraction, rain water harvesting, ground water charging – PHED

2.   Adopting good irrigation practices protection and management of Flood Plain Zones (FPZ) Maintaining minimum environmental flow of river – Water Resources Department.

3.   Dimapur Municipal Council

4.   Department of Environment, Forests & Climate Change

Ongoing programmes

Ongoing programmes

30th June 2021

Ongoing Programmes

31st Oct. 2019

375 lakhs

Will Seek financial assistance from CPCB under Environmental Compensation

14 Awareness and cleaning works Dimapur Municipal Council 31st Dec. 2019 293.25 lakhs Cleaning of clogged drains and awareness. Will Seek financial assistance from CPCB under Environmental Compensation
GRAND TOTAL AMOUNT 674.25 lakhs Sanctioned project such as  and hence not included in the total gap requirement of fund sought for.

(Rupees Six Crores Seventy Four Lakhs Twenty Five Thousand only)

Member Secretary

River Rejuvenation Committee