CALL FOR RESEARCH PAPERS-Feb,2015;May,2015;August,2015;Nov,2015.....
Welcome to Banglavision or World Vision Research Journals

BANGLAVISION

Vol. 9 No. 2 August 2012

Ground Water Contamination due to Textile Dyeing Wastes of Savar Area

Dr. Engr. Md. Zahid Husain Khan Senior Faculty, World University of Bangladesh

Abstract

Majority of the textile dyeing industries of Bangladesh are located in the Savar area at Dhaka. Dyeing industries are critical in consideration to environmental impact. Effluent streams from dyeing processes are hot, colored and may contain significant concentrations of heavy metals and suspended solids. At present wastewater from the dyeing industries are discharged through open drains into the stagnant ponds that exist in Savar area and finally fall into the Savar Bongshai River. The Stagnant pond areas serve to retain the dyeing wastewater for prolonged period of time, allowing dissolved constituents from the wastewater to percolate into the subsurface and contaminate the groundwater. The present study aims at assessing the groundwater contamination from dyeing wastewater in and around Savar area. Groundwater samples were collected from tube wells and wastewater samples were collected from the stagnant ponds. For all samples, heavy metal concentrations and other parameters e.g. color, nitrate, alkalinity, BOD, COD, TS, TDS and TSS was analyzed. Copper concentration in groundwater was found nil and zinc concentration was found very little. pH values do not satisfy the limit of Bangladesh standard values for drinking water. TSS concentrations exceed the Bangladesh standard for drinking water. Other quality parameters satisfy the Bangladesh standard as well as WHO guideline values for drinking water. BOD and total suspended solids concentrations in wastewater samples exceed the IFC, 2007 guideline values but satisfy the ECR-97 guideline values for effluent discharge levels for the textile industry. Copper concentrations in all the wastewater samples exceed the IFC, 2007 guideline values. There is no clear correlation observed between the distance of tube well from stagnant ponds and the parameters of groundwater.

BANGLAVISION FOUNDATION    |  Copywright © 2009-2012     | All Rights Reserved