Revised Action Plan for rejuvenation of River Dhansiri in Nagaland

Revised Action Plan for rejuvenation of River Dhansiri in Nagaland 

 

PREPARED BY: RIVER REJUVENATION COMMITTEE

CONTENTS

  1. Introduction
  2. Objective of the Action Plan.
  3. The Basis of Proposed Action Plan for rejuvenation of polluted river stretches in Nagaland.
  4. Components of Action Plan.

Source control

  • Industrial Pollution Control.
  • Channelization, treatment, utilization and disposal of treated domestic sewage.
  • Flood Plain Zone.
  • Ecological/Environmental Flow (E-Flow)
  1. Treatment of sewage.
  2. Flood Plan Zone (FPZ).
  3. Monitoring of Action Plan.
  4. Action Plan – Short Term and Long Term Action and the Identified Authorities for initiating actions and the time limits for ensuring compliance.

 

REVISED ACTION PLAN FOR REJUVENATION OF RIVER DHANSIRI IN NAGALAND

ANNEXURES

ANNEXURE 1: Pollution abatement of Rivers Dhansiri at Dimapur town.

ANNEXURE 2: Programme for utilization of treated water.

ANNEXURE 3: Map of River Dikhu and Dhansiri passing through Dimapur city and proposed

sewage lines AND STPs.

ANNEXURE 4: Construction of roads and drains in Dimapur city.

ANNEXURE 5: Water Analysis Report during the year 2018.

 

REVISED 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. Dimapur city and its neighboring towns and villages contributes pollution load in river Dhansiri.

Biological 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 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 industries in Dimapur that discharges effluents in large quantity to cause such serious contamination. Therefore, the main source of pollution is due to domestic waste and municipal solid waste which is being dumped into the nullahs & river. All sorts of waste and untreated sewage is released randomly into the Dhansiri River in absence of a sewage treatment facility.

The details of the six identified rivers/streams 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

 

  1. Objective of the Action Plan

It is an important aspect for revival of river Dhansiri in context of its utility as it is 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, generated municipal sewage 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. Comparative suggested criteria for Irrigation, wild life and survival of fish life in river Dhansiri 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

 

  1. The Basis of Proposed Action Plan for rejuvenation of polluted river stretches in Nagaland

 

  • Analysis reports of NCPB & CPCB.
  • 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.

River Dhansiri and its tributaries have no proper treatment plant. Therefore, the action plan for prevention and control of pollution of river Dhansiri is based on the following documents:-

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’ in the country indicating that the water quality of Dhansiri river is degrading further beyond human consumption or even bathing.

  1. 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:

  • Industrial Pollution Control
  • Inventorization of industries
  • 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.

 

  • 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.

 

  • Ecological/Environmental Flow (E-Flow)
  •  Issues relating to E-Flow
  •  Irrigation practices

 

  1. 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.

 

  1. Flood Plan Zone (FPZ)

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

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

 

  1. Monitoring of Action Plan

Action Plan for River Dhansiri and its tributaries be monitored by a Committee under the Chairmanship of Principal Secretary, Environment, Forests and Climate Change on six monthly basis as notified vide GoN FOR/NPCB-27/6/18, dated 2nd November 2018.

  1. 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.


REVISED 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)           Identification of polluting sources including drains contributing to river pollution, functioning status of STPs/ ETPs/CETP and

 

 

 

 

 

 

 

(ii)         Solid waste management and processing facilities;

1.   Public Health Engineering Department

 

 

 

 

 

 

 

 

2.   Dimapur Municipal Council

 

 

2019

(An appeal for extension of time for completing the project is made to MoEF & CC)

 

 

1.     82.80 Cr

Sanctioned by MoEF &CC

 

 

 

 

 

 

 

2.     Nil

Ongoing project

1.   The project 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)

 

2.   Dimapur Municipal Council in association with State Investment Program Management and Implementation Unit (SIPMIU) is in the process for developing scientific waste management facilities for Dimapur City.

 

 2 Map showing Polluted River, its tributaries, drains, major towns, industrial estates, location of STPs/CETPs Enclosed Ongoing project as Sl. No. 1 (i)

(Annexure II)

 

 

3 Detailed gap analysis w.r.t town-wise 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)

4 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; 1.   Department of Industries & Commerce

2.   Nagaland Pollution Control Board

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

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

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

 

5 Quantification and characterization of waste (such as solid waste, industrial hazardous waste, bio-medical waste, E-Waste), STP sludge management, existing infrastructure and detailed gap analysis;

 

Nagaland Pollution Control Board  

2019

 

20 lakhs

Nagaland Pollution Control Board will undertake the detailed inventory of solid waste, industrial hazardous waste & bio-medical waste and E-waste.

 

6 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

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

 

7 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 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.   DMC

 

4.   Plantation on both sides of the river – Department of Environment, Forests & Climate Change

Ongoing

programmes

 

 

 

 

Ongoing

programmes

 

 

 

 

 

 

 

 

 

 

2 years

 

Ongoing

programmes

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

375 lakhs

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Construction of drains

8 Awareness and cleaning works DMC 2 years 293.25 lakhs Cleaning of clogged drains and awareness
GRAND TOTAL AMOUNT 688.25 lakhs 82.80 crore for pollution abatement of River Dhansiri had been sanctioned and hence not included in the total gap requirement of fund sought for.

 

(Rupees Six Crores Eighty Eight Lakhs Twenty Five Thousand only)