Verification of the Pollution Caused from Textile Industry Wastewater by Determination of Some Heavy Metal Concentration, Chemical Oxygen Demand (COD) and Biochemical Oxygen Demand (BOD (original) (raw)
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Pollution is an important problem in human and aquatic life that leads to a miserable condition. There are many kinds of pollution but textile industry is mainly by the release of wastewater containing dyes and chemicals, coming out from wet processing like de-sizing, scouring, bleaching, mercerizing, dyeing, printing and finishing. In present investigation, the physico-chemical analysis and heavy metals concentration are pH, TDS, TSS, BOD5, COD, Total alkalinity, sodium, sulfate, phosphate, chloride, chromium, cadmium, copper, iron, nickel, lead and zinc were found within the permissible limits. Concentrations of all these metal ions in the effluent were above the recommended NEQS. The effluent samples were evaluated to ascertain the efficiency of industries wastewater treatment process. Conventional methods were employed for determination of physico-chemical parameters while; heavy metals in the textile effluent sample were analyzed using an Atomic Absorption Spectrophotometer (AAS).
An investigation was made to ascertain heavy metals concentration in effluent samples collected from different textile and garments industries located at Bhaluka industrial area, Mymensingh, Bangladesh during August to November, 2013. Atomic absorption spectrometer (AAS) was used to evaluate the concentration of Zinc (Zn), Copper (Cu), Nickel (Ni), Cadmium (Cd), Chromium (Cr) and Lead (Pb) in the samples. The study revealed that heavy metals were present in variable amounts, where the concentrations of Cu (0.0405 ppm) and Pb (0.0003 ppm) were found lower than recommended level for industrial waste water. Among the present trace metals, the highest concentration (0.2-1.0 ppm) was found in Zn. Although the concentration is suitable for irrigation, it is unsafe for aquaculture. Besides, all of the wastewater samples possessed no Cr, Cd and Ni, which comprised less of the minimum acceptance level, indicating no possibility of contamination. However, comparing findings of this study with the safe limits for industrial wastewater, it can be concluded that the waste water of the study area except some sampling sites can be used for irrigation and aquaculture.
Madridge Journal of Agriculture and Environmental Sciences, 2018
Environmental problems of the textiles industries are mainly cause by the discharge of wastewater coming from the dyeing and finishing processes containing the heavy metals. This study assessed the heavy metals concentrations in the surface water body of neighboring Funtua and Zaria textile industry and effluent water collected from Funtua textile industry using atomic absorption spectrometer (AAS). The concentrations of heavy metals like Lead (Pb), Cadmium (Cd), Iron (Fe), Zinc (Zn) and Coppernicium (Cn) were assessed and the concentrations of each of the metals varies in the samples collected and analyzed with the following values: Funtua water samples Fe 0.0025 mg/l lower part and 1.63 mg/l upper part, Zn 0.51 mg/l lower part and 1.02 mg/l upper part, Pb 0.007 mg/l lower part and 0.61 mg/l upper part, Cd 0.01 mg/l lower part and 0.016 upper part, Cn was not detected (ND), for effluent Fe 3.61 mg/l and 2.61 mg/l, Pb 2.66 mg/l and 2.69 mg, Cd 0.99 mg/l and 1.06 mg/l, Zn 2.26 mg/l and 2.99 mg/l, Cn ND also and for Zaria water samples Fe 0.96 mg/l lower part and 2.15 mg/l upper part, Zn 1.07 mg/l lower part and 1,74 mg/l upper part, Pb 0.36 mg/l lower part and 1.02 mg/l upper part, Cd 0.41 mg/l lower part and 0.66 mg/l upper part and Cn ND also. Fe and Pb showed concentrations higher than limits set by the NSDWQ and WHO while Zn and Cd showed concentrations below limits set by NSDWQ and WHO. The river neighboring Zaria textile happened to be more polluted than the one neighboring Funtua textile industry. It was concluded that the effluent samples of textile industries discharge causes pollution to the water bodies and serious problem for living being and ecological environment. Therefore, the effluent water to be discharged by these industries must be adequately treated before discharge.
Severe environmental pollutions are contributed by textiles at an alarming rate. Proper treatment of wastewater before discharge is mandatory for maintain our ecological balance. Pollution levels of textile effluent has been investigated and analyzed in this research. Effluent samples from different areas of textile processing industries in Bangladesh were collected and analyzed. A total forty sample were studied and characterized their result ranged are temperature, pH, Total Dissolved Solid (TDS), Dissolved Oxygen (DO), Chemical Oxygen Demand (COD) and Biological oxygen demand (BOD 5). Standard sample collection procedures was followed to collect samples of six months and analyzed immediately temperature, pH & TDS by pocket size Thermometer, pH and TDS meter. To sum up, textile effluent contains high Temperature, pH, TDS, COD and lower DO which threatens aquatic lives live. It has been acclaimed that, it is quite unsafe for this discharge into water body to continue. The ecological and human health safety of continual discharge of this textile effluents into surface water are undoubtedly under threat.
Investigation of Water Quality Parameters Discharged from Textile Dyeing Industries
Rapid development of textile industry and direct deposition of the effluents into sewage networks produced disturbances in treatment processes and exert pollution loads on water bodies. The study was conducted to investigate the water quality parameters discharged from seven textile dyeing industries at Konabari in Gazipur region of Bangladesh during March to December, 2011, and also to evaluate the harmful effects of effluents on the surrounding environment. Emphasis was given on the investigation of important water quality parameters, which include temperature, pH, total suspended solids (TSS), total dissolved solids (TDS), dissolved oxygen (DO), biochemical oxygen demand (BOD) and chemical oxygen demand (COD), along with the management techniques of effluents discharged from textile dyeing industries. The study depicted that the DO values were nil or below the standard values in all industries which was very alarming for environment. The concentrations of BOD, COD, TDS and TSS were very high which indicate the presence of water pollutants. The study was focused on the pollution implications of effluents from textile industries around the study area, because of the risk of human exposure and environmental degradation by these massive discharged effluents. The water quality deteriorated in dry season than the wet season and the surface water around the studied area was highly polluted due to the industrial activities and should totally avoid for human consumption without proper treatment. It is therefore recommended that the careless discharge of the effluents should be discouraged and appropriate management system should be taken immediately to reduce the water pollution for saving the environment.
2016
Ready-Made Garments (RMG) is the biggest sector in Bangladesh where a large amount of waste streams or effluents is produced. The presence of heavy metals in industrial waste water is one of the main causes of water and soil pollution in Bangladesh. The present research was carried out on eight garments industries of Gazipur region that are using Effluent Treatment Plant (ETP) for the waste water management. In this investigation the heavy metal (Cd, Pb, Hg, Ni, As, Cr, Cu, Zn, Mn, Sb and Co) contents in the 24 samples of different garment industry's inlet water and waste water (before and after treatment) were determined. In most of the cases the Cd, Pb, Hg, Ni, As, Cr, Sb and Co content are not too high in the waste water and can be reduce to tolerable range with the ETP, whereas the textile manufacturing process discharge huge amount of Cu, Zn and Mn to the waste water and these metals content in the waste water even after treatment are beyond the tolerable range.
Wastewater Pollution from Textile Industry and its Control
Textile has become a major source of income for India's economy. Textile manufacturing involves various processes like yarn fabrication, fabric production, dying/printing, finishing etc. As far as the generation of liquid waste is concerned out of the above mentioned processes dyeing/printing and finishing are of main importance. These processes are water intensive hence produces large volume of wastewater containing a wide variety of dyes, natural impurities, acids, alkalis, salts and sometimes heavy metals. Unfix dyes (5% to 50%) are one of the major environmental problem toward treatment of textile wastewater. Wide range of structurally diverse dyes has been used in this sector. Coloured textile effluent after joining any water body make the water unfit for downstream usage as well as interfere with natural activities of aquatic life. The treatment of textile processing effluents is of interest due to their toxic and aesthetic impacts on receiving water body. Several factors ...