Agriculture Reference
In-Depth Information
of polluted and acidified lakes and streams can be initiated (Pathak and
Ulrich, 2014).
17.4.2 REPORT INDICATING THE DE-POLLUTING EFFECT
OF AGNIHOTRA ASH ON WATER
The following report indicates the de-polluting effect of Agnihotra ash on
water and on biotic life when industrial effluent was present in the water.
• A Bio assay test was carried out to study the effect of Agnihotra ash
on biotic life. Different concentrations of effluents were prepared.
Ash dose was given and fish were kept under observation for 48 h.
The effluent was collected from textile process industry. Biotic life
was possible in concentrations of 15% effluent with 0.5 gm/L ash
and 20% effluent with 2 gm/L ash. Whereas biotic life was absent in
20% effluent with 0.5 gm/L ash and 15% effluent with no ash (Frits
and Ringma, 2009).
• The Chemical Oxygen Demand (COD) of the effluent before and
after Agnihotra ash treatment was compared.
• The study revealed concentration of COD after Agnihotra ash treat-
ment is reduced which indicates Agnihotra ash helps to purify the
water.
Ground water quality is controlled by geological factors (arsenic, iron,
fluoride, etc.), overdraft, fertilizers and pesticides use, and saline water
intrusion in the coastal regions. The current status of water can be viewed
from the following statement.
• High levels fluorides have been reported in several pockets of 200
districts in West Bengal, Bihar, Chhattisgarh, Assam and in certain
pockets of Uttar Pradesh.
• High concentrations of iron in ground water have been reported in
Assam, West Bengal, Orissa, Chhattisgarh and Karnataka.
• Nitrate pollution has been reported in intensively irrigated and high
agricultural productivity regions, and in urban areas due to improper
and inadequate sewage disposal.
• Punjab and Haryana consumes N fertilizers more than 100 kg/ha and
have the highest nitrate pollution in their waters.
• Nitrate pollution (above the WHO permissible limit) also occurs at
several locations in Gujarat, Maharashtra and Orissa.
