| dc.contributor.advisor | Prof. Dr. Md. Abdul Hakim | |
| dc.contributor.author | CHOWDHURY, MD. SARWAR KABIR | |
| dc.date.accessioned | 2022-04-24T05:29:11Z | |
| dc.date.available | 2022-04-24T05:29:11Z | |
| dc.date.issued | 2017-06 | |
| dc.identifier.uri | http://localhost:8080/xmlui/handle/123456789/731 | |
| dc.description | Bangladesh is an agricultural country where industrialization is taking place in a
gradually increasing phase. Bangladesh is located in a sub-tropical area with an average
annual precipitation less than one third of that of the world. Furthermore, spatial and
temporal distribution of the regional precipitation is not integrated and also these
resources are at greater risk to contamination. With increasing global population, the gap
between the supply and demand for water is widening and is reaching such alarming
levels that in some parts of the world it is posing a threat to human existence. Studies in
Bangladesh have (Hakim et al., 2009; Islam et al., 2010) showed that HCO3
-
, Na+
, Ca2+
,
Mg2+ and Cl- were the dominant ions in groundwater collected from different regions.
Climate change, new waterborne pathogens, and the development and use of new
chemicals for industrial, agricultural, household, medical, and personal use have raised
concern as they have the potential to alter both the availability and the quality of water
(IPCC, 1995, Kolpin et al., 2002).
The main sources of water in Bangladesh are surface waters; rivers, reservoirs, lakes,
canals and ponds; ground water resources are important in some areas (Ahmed and
Rahman, 2003). In Bangladesh concerns over water quality are (i) industrial pollution
near major urban centers (ii) fecal contamination throughout the country (iii)
contamination by agro-chemicals, (iv) saltwater intrusion in coastal areas (v) suspended
sediments, largely from the upper catchments outside Bangladesh. Effluents from
industries are normally considered as the main industrial pollutants containing organic
and inorganic compounds are discharged into the nearby water bodies as well as
agricultural fields. It makes the water bodies toxic as various industries discharge the
suspended solids, toxic chemicals, oils, greases, dyes, radioactive wastes and thermal
pollutants. As a result the high level of pollutants mainly organic matter in water causes
an increase in BOD, COD, TDS, TSS etc. It makes the water unsuitable for drinking,
irrigation or for other uses. Nearly all water contains dissolved salts and trace elements,
many of which result from the natural weathering of the earth's surface. | en_US |
| dc.description.abstract | An investigation was carried out to assess the suitability for agricultural purpose of 26
rice mill waste water samples collected from different locations of Dinajpur sadar upazila
of Dinajpur district. Analyses included pH, EC, TDS (Total dissolved solids), cations
(Ca2+, Mg2+, Na+
, K+
, Cu2+, Mn2+, Fe3+) and anions (HCO3
-
, SO4
2-
, PO4
3-
and Cl-
).
Several computed variables such as SAR (Sodium adsorption ratio), hardness (HT),
permeability index (PI), Kelly‟s ratio, Gibbs ratio and potential salinity to evaluate the
suitability of waste water for specific uses. The waste water were found basic (pH varied
from 6.38 to 6.90) and suitable for vegetables. Waste water samples contained Ca2+, K+
and Na+
as the dominant cations and HCO3
-
and Cl- were the dominant anions. According
to EC value, the samples were excellent and good for germination purposes. The SAR
value of all water samples under test were excellent classes. Maximum samples were
within hard class regarding hardness. Based on, Cland PO4
3-
all rice mill waste water
samples were within the 'safe' limit for germination. The positive coefficient of
correlation among pH, EC, TDS, Mg, K, HT, Ca, Mg, K, Na and HCO3 reproduced that
the quality of the free soil solution may indicate the distribution of sodium ion in the
absorbed phase. On the other hand the negative coefficient of correlation Na-Mn, Na-Cu,
Na-pH, Fe-SO4, Cu-SO4 indicated that the increase of one parameter will result in the
decrease of the aforementioned parameters. Germination test, shoot and root length of
okra, radish, mustard, cucumber and stem amaranth seeds using different rice mill waste
water samples were also performed. The highest germination (96.67%, 97.07% and
70.00%) was found in radish, mustard and stem amaranth, respectively with the
treatments of T1 and T2, T4 and T1. It was observed that some waste water effluents could
also delay germination and growth of crops such as okra. However, overall view the rice
mill waste water was suitable for germination and also effluent from rice mill waste
water could be utilized for irrigation purposes after proper treatment. | en_US |
| dc.language.iso | en | en_US |
| dc.publisher | HAJEE MOHAMMAD DANESH SCIENCE AND TECHNOLOGY UNIVERSITY, DINAJPUR. | en_US |
| dc.subject | RICE MILL WASTE WATER | en_US |
| dc.subject | GERMINATION | en_US |
| dc.title | ASSESMENT OF RICE MILL WASTE WATER AND ITS IMPACT ON GERMINATION AND SEEDLING GROWTH OF DIFFERENT VEGETABLES | en_US |
| dc.type | Thesis | en_US |
