Environmental Protection : Challenges and Responses |
Studies
carried out on the state of environment in the country indicate a dangerous
situation which might reach disastrous proportions. The reasons for such an
impending calamity are not difficult to assess. A burgeoning population having
crossed the billion mark coupled with large scale rural – urban migration has
put unbearable strain on the already over – stretched infrastructure of towns
and cities. The civic agencies cannot cope up with the increasing demands for
water and power supply, sanitation, sewage and waste management, etc., Depleted water
availability, shortage of power, non-availability of land for garbage disposal,
increase in the number of vehicles, non-effective controls on emissions, absence
of water conservation schemes, depletion of tree cover due to mushrooming
commercial and housing complexes, add up to the complexities which urban areas
face. Lowering of water table, selected cultivation of cash crops which are
water intensive, destruction of trees for wood as construction material,
extensive degradation and salination of agricultural
land are some aspects which need to be addressed and ameliorative mitigation
actions taken. Environmental protection is an integral part of the development
process and cannot be considered in isolation from it. This involves a holistic
approach and understanding of issues which are best handled with the
participation of all concerned. It also involves changing of
attitudes and lifestyles, such that we minimise and reduce the impacts on
environment.
Depleting and Deteriorating Water
Most of the cities and towns in India are situated near water bodies like
rivers, lakes and streams. These are slowly drying up or getting contaminated.
Some statistics of Delhi are pointers to the present situation of water quality
and availability in urban areas. Out of an average total of 3324 million litres
per day of Delhi’s require-ment of water for domestic use the installed
capacity is 2634 million litres. During the peak summer months, the shortage is
75 crore litres per day. The water table is also steadily receding. At present
at Mehrauli, Najafgarh and East Delhi it is 20, 15 and 30 metres deep
respectively. Almost half of the watershed area of the world’s fresh water
system is estimated to have been lost in the last century as land has been
converted to urban use or agriculture.
As regards sewage and contamination, it has been established that 1.3 billion
litres of sewage is discharged into the River Yamuna every day. This holds good
for other towns and cities. Out of 22 drains which spew effluents in the river,
20 have not met water quality standards. Out of 16 sewage treatment plants which
were to be set up through a Supreme Court order in 1995, only 8 have been
completed so far and out of these only 5 are operational (Parliament Standing
Committee on Environment, reported in Times of India, 30 April 2001). In the
capital, only 2 pollution monitoring stations have been set up although 19 were
sanctioned four years ago.
In order to solve these problems a concerted effort and effective strategy has
to be formulated. This would involve creation of satellite townships and
shifting of small scale industries from the city limits, conservation and
harvesting of water, treatment of effluents, cleaning up of water bodies,
adoption of cleaner technologies to eliminate toxic effluents, regular,
continuous monitoring and enforcement. It is essential to understand the
economics of water harvesting. Statistics indicate that an investment of Rs.5
lakhs in water harvesting brings out a yield of Rs.45 lakhs. Water harvesting
should be obligatory in all new co-operative housing societies and residential
plots of 500 sq. yards and above. Commercial buildings, discharging more than
10000 litres of waste water per day, should be made to install recycling
systems. For domestic use, the cisterns having 12 litres capacity should be
replaced by those with 5 litres capacity. For example, Delhi has around 2
million toilets each being used at an average of 8-10 times a day. This alone
would result in a saving of 140 million litres per day. It would also reduce the
quantity of waste water to be treated and the expenditure of pumping the
additional treated water for domestic use. Cases of Namibia and Holland are good
examples of water treatment. In Namibia, direct reuse of treated waste water for
drinking purposes is being practised extensively. Nearly 50% of the normal
supply is from treated sewage, which is given a high degree of treatment before
blending with fresh water. In Holland, water from the highly polluted Ruhr River
is treated, pumped underground into sand dunes, then pumped up and retreated
before use as drinking water. All these measures are cost effective if
expenditure on health are taken into account and where government expenditure on
treating water-borne diseases like hepatitis, cholera, diarrhoea, dysentery take
a huge toll on the exchequer.
In the rural scenario, water conservation methods have to be extensively
employed to prevent run-offs. Small scale check dams, creation of tanks and
reservoirs would not only ensure water supply through the lean dry months but
will be instrumental in raising the water table. The Johad experience is a case
in point. Johads or mud and rubble check dams were constructed by villagers of
Bhaonta-Koyala in Alwar District of Rajasthan under the guidance of Tarun Bharat
Sangh. The check dams raised the water level by 20-50 feet (Anuradha Thakur in
Yojana, May 2001). TARAGram near Orchha, the field research unit of Development
Alternatives has pioneered check dams in the Bundelkhand region resulting in
perennial water supply in the area from the reservoir and plentiful supply in
nearby wells. Water harvesting, both in the rural and urban scenarios assume
great significance. Storage of rainwater in lakes and depressions, abandoned
quarries, paleochannels, village ponds, rooftop harvesting, eco-parks and ground
water sanctuaries would eradicate the constant thirst for water. Anil Agarwal of
Centre for Science and Environment is of the view that "If rain water is
captured in the area of the Union Territory of Delhi, there would be enough
clean water to meet drinking and cooking needs of every individual in
India". Although the monsoons occur once during the season, the rainfall is
adequate. It is how we utilise it. Annual rainfall in Jharkhand, Uttaranchal and
Chhatisgarh is 1326, 1667 and 1338 mm respectively, each state getting more than
Punjab and Haryana. Yet, the irrigated land in these three states is 75% less in
case of Jharkhand, 56% less in Uttaranchal and 16.6% less in Chhatisgarh as
compared to the two agrarian states of North India.
The Dirty Air
Almost all the Asian cities have airborne particulate levels twice the
standards set by WHO. Vehicles have taken over industries in contributing to the
air pollution load. In January, 1999 Delhi had 2.6 million vehicles and the
number is increasing by 500 per day and raising the Suspended Particulate Matter
(SPM) load to 5 times that of WHO norms. Poor quality fuels provided by filling
stations has further aggravated the problem. SPM produced by diesel fumes, which
remain in the atmosphere and can be easily inhaled, have become a major health
hazard due to its carcinogenic effect. Although lead content at traffic
intersections have reduced by 60% after introduction of unleaded petrol, high
levels of benzene and polyaromatic hydrocarbons are cause for concern. The
statistics of emissions for the year 1996 are:
wSPM
– Kolkata 200000 tons and Delhi 116000 tons annually
wSulphur Dioxide – Mumbai 157000 tons and
Delhi 46000 tons annually
wCarbon Monoxide – Mumbai 470 tons, Delhi
810 tons and Kolkata 188 tons daily.
Besides vehicles, thermal power plants, industries and domestic emissions
contribute 16, 12 and 7% of the total air pollution load as it pertains to
Delhi. Deforestation has led to loss of green cover, open dessiccation, moisture
loss and soil textural adversities. The depletion of tree cover is responsible
for high levels of dust in the air leading to diseases like bronchitis, asthma
and acute respiratory infections. Pesticides in air effect the liver and cause
neuropathy. Intestinal pneumonitis, chronic kidney disorder, diabetes,
hypertension and atheroma in blood vessels are some of the ailments due to
oxidant effect of nitrogen dioxide, presence in air of aldehydes and
hydrocarbons.
The strategy to check air pollution are:
wCleaner
fuels for vehicles. Use of CNG is a step in the right direction. In addition,
rigorous measures need to be taken to minimise content of benzene and sulphur,
especially for diesel vehicles.
wImprove
public transport system by introduction of an alternative like underground or
elevated high-speed rail transit facility. Delhi is one of the few capitals in
the world where no alternative transport system is available. With improved
technology of underground tunnelling without disrupting the existing surface
transport system, work can be accelerated. The rail link should cover the entire
area with feeder or subsidiary links to enable a commuter to reach the
destination without having to transfer to road transport and vice-versa. In the
long run the fares will not only cover the construction cost but also enable
enough accruals for maintenance, expansion and periodic modernisation.
wImproved
traffic management by introduction of computerised traffic signalling to avoid
congestion and delays at traffic intersections, flyovers on major highways and
bypasses at major towns and cities.
wRigorous
vehicle inspection and certification. At present pollution control checking
centres are an eyewash and the certificates which they give every three months
after charging Rs.30 to Rs.50 are not worth the paper on which they are written.
A vehicle with a chimney – like exhaust, clearly visible to the eye, can get
away with a Pollution Under Check (PUC) certification by methods known to one
and all.
wPhasing
out of outdated vehicles. Although these measures are becoming effective,
especially in the metropolitan cities, a total ban is not being imposed. The
outdated/discarded vehicles are sold or sent to other towns where they continue
to run, thus creating high air pollution levels. A glaring example of vehicular
pollution is the three wheeler "phat phat" taxi service plying in most
of the district towns. The government has to take hard decisions on promoting
livelihoods for a small group of taxi operators vis-à-vis the health of a large
section of urban population. Holding it to ransom by organising union-led
strikes should not be permitted in the interest of maintenance of essential
services.
wIncreasing
of tree cover reduces dust and smog in air. In Delhi, although green cover has
increased from 26 sq kms to 60 sq kms in the last five years, much has to be
done. A joint, concerted effort has to be made by the forest and horticulture
departments to provide tree saplings, selecting denuded areas and planting
carried out with the help of communities. What is important, however, is the
careful nurturing of saplings and maximising their survival rate.
The Rising Heap of Solid Waste
A research study carried out at Princeton
University in the USA said that the country’s annual solid waste, if loaded in
tractor-trailors and parked one behind the other would reach half way to the
moon. The total waste generation in urban areas of India is estimated to exceed
39 million tons a year by the year 2001 (Solid Waste Management in Class I
Cities in India Report, March, 1999).
The most widely used method of Municipal Solid Waste (MSW) management in India
is the practice of land filling. However, landfills here are nothing but open
dump yards. Uncontrolled dumping has created overflowing landfills that are not
only difficult to reclaim because of the haphazard and unscientific manner of
dumping, but also have serious environmental impacts such as water pollution due
to leaching, methane emissions and soil degradation. Ministry of Environment and
Forests has issued "Draft Rules on MSW" by a notification of 27
September, 1999, laying down all the specifications required for managing MSW.
Salient features of the document are:
wLandfill
construction shall be done after an environmental impact assessment (EIA)
wProvision for future landfilling shall be
included in the land use plan of the town.
wThe landfill site shall comply with the
norms for control of air and water (ground and surface) pollution and other
environmental norms as per prescribed standards.
wWaste
at disposal site shall not be burnt.
Following and enforcing the above mentioned norms requires cooperation from one
and all. In developed countries MSW is given high priority by way of waste
minimisation, reuse, incineration with energy recovery and sanitary landfilling.
For example, in Sweden, energy produced from waste incineration is meeting the
heating requirements of 2,50,000 apartments corresponding to a saving of
5,00,000 tons of oil annually. In India it has been estimated that there is a
potential of generating about 1,000 MW of power from urban and municipal waste
and about 700 MW from industrial wastes in the country. Do we have the
technology to efficiently utilise our MSW? Or we prefer to continue with the
attitude of "business as usual? These are the questions, which need serious
contemplation. We have to employ all technologies like composting,
biomethanation, pelletisation, gasification, pyrolysis, incineration, sanitary
landfilling and plasma arc fixed hearth process to gainfully treat MSW and put
it to use. The different role players in MSW management should be:
wMunicipal
Authorities – Establishing a separate Municipal Department with trained and
skilled manpower for garbage collection and disposal like other utility services
viz., Jal and Vidyut Boards.
wUrban
Planning Department – for allocation of suitable land for landfills and
treatment plants.
wLegal
System – enforcing the "polluter pay principle" and imposing strict
penal and fiscal sentences for defaulters.
wSocietal
Level – for organising segregation at source, organising rag pickers for door
to door collection, installing garbage processing equipment in multi-storeyed
complexes and reducing waste by composting (including vermi-composting).
wNGOs
– for generating awareness and mobilising all stakeholders to pitch in to the
task of solid waste management.
Conclusion
There is a general awareness being created on the impact of environmental
degradation on our day-to-day life. We understand, though a bit gradually, the
need to live in harmony with nature. The importance of cleaner and greener
technologies cannot be over-emphasised. All natural resources have to be
harnessed in a sustainable manner to ensure the well-being of our future
generations. Community Led Environment Action Network (CLEAN-India) Programme
initiated by Development Alternatives addresses these specific issues in a
systematic, scientific and in an evolutionary way for decent, productive and
sustainable livelihoods for the country’s teeming millions.
q by
Col. Valmiki Katju (Retd)
Manager,
CLEAN-India
Development
Alternatives