International Journal of Advance Civil Engineering and Technology ISSN: 3107-7374 (Online)

Authors : Md. Rubel*, Md. Shahidul Islam**,Sheik Md. Akij*, MohammadHelal Uddin

Abstract: Rapid industrialization is adversely impacting the environment globally. The study was carried out to evaluate the biophysical properties of samples contaminated by unplanned industrialization in terms of Effluent Treatment Plant (ETP) efficiency, availability and to evaluate the present scenario of water and air pollution by industrial discharges in order to create public awareness and its impact on public health. The study area was carried out in the second largest metropolis of Bangladesh, Chittagong. The study was carried out in 10 industries as a sampling station before and after treatment of industrial discharges and covered mainly two seasons, winter and dry seasons from November 2017 to June 2019.More than six parameters of effluents were analyzed. They are for total dissolved solids, total suspended solids, Total solids, dissolved oxygen, Chemical Oxygen Demand, Biochemical Oxygen Demand test etc. Collection, preservation and analysis of the samples were carried out in accordance with standard procedures. During analysis all precautions were taken in consideration.  The ranges of results of waste water obtained were 25 – 453 mgL-1 for total suspended solids (TSS), 2128 – 5,573mgL-1 for total dissolved solids (TDS), 2283- 5709mgL-1 for Total solids, 2.25 – 7.01mgL-1for dissolved oxygen, 27 – 403mgL 1for  Biochemical Oxygen Demand (BOD), 80 – 1436 mgL-1for Chemical Oxygen Demand (COD).Here almost all the parameters of industrial discharges are out of range prescribed by the Department of  Environment (DoE),Bangladesh which is so much frightening for us. So, the properly untreated industrial discharges mainly heavy metals are 

deposited in our bodies through food cycle and through inhalation particulate matters which impacts on our body. In this research work, around 100 workers and neighbors of those selected industries has been studied and found to face different health problems like skin problem, vomiting, convulsion, eye irritating problem, headache, loss of IQ, diarrhea, nausea, decrease in memory and other health problems etc.

Keywords: Dissolved Oxygen, Effluent, Solids, Public Health