ISSN: 2319-5967 ISO 9001:2008 Certified Performance Evaluation of Effluent Treatment Plant of Textile Wet Processing Industry: A Case Study of Narol Textile Cluster, Ahmedabad, Gujarat (original) (raw)
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Performance Evaluation of Effluent Treatment Plant for Textile Mill at Ramtek, MS, India
IOSR Journal of Mechanical and Civil Engineering, 2014
The present study has been undertaken to evaluate performance efficiency of an Effluent Treatment Plant (ETP) of a Textile industry located at Ramtek, Nagpur (Maharashtra). An existing ETP is operating on biological treatment method (extended aeration activated sludge system) followed by tertiary treatment plant (R.O), with an average inflow of 30m 3 /hr. Wastewater is analyzed for major parameters such as pH, Chemical Oxygen Demand (COD), Biological Oxygen Demand (BOD), Total Dissolved Solid (TDS), Total Solid (TS), Total Suspended Solid (TSS) and Alkalinity. The effluent samples were collected from each units of ETP on a monthly basis for a certain period. A jar test was also conducted to determine the optimum dose of alum with respect to COD removal. After an experimentation, it was found at 400 to 500 mg/l dose of alum 42.48% COD reduction was achieved. The COD, BOD, TS and alkalinity after biological treatment reduces significantly, except TDS & TSS having very low reduction of 44% & 45% respectively. Overall treatment & analysis for treated effluent (from RO) describes, most of all the parameters were found within the permissible limit of Maharashtra Pollution Control Board. (MPCB)
Performance Evaluation of Textile Effluent Treatment Plant: Bangladesh Perspective
International Journal of Engineering Materials and Manufacture, 2022
The present study was undertaken to evaluate the performance efficiency of an Effluent Treatment Plant (ETP) of a Textile industry located at Tongi, Bangladesh with biological treatment (BT) and Membrane Bio-Reactor (MBR) with an average inflow of 300 m3/hr. The effluent samples were collected from the inlet and outlet of the ETP on a weekly basis for a 4 weeks’ period and were analysed for key parameters such as colour, temperature, total suspended solids (TSS), Total Dissolved Solids (TDS), pH, Dissolved Oxygen (DO), Biological Oxygen Demand (BOD), and Chemical Oxygen Demand (COD). In this study, it was observed that the colour of the effluent in the inlet was dark blue and after multiple unit treatments of the colour’s final outlet the discharge, water colour was very light purple. The temperature was varied from 32.2⁰C to 34.33⁰C. The TDS was varied from 1252.5 mg/l to 1087.5 mg/l and the percentage removal efficiency of TDS was varied from 21.47% to 42.7%. The TSS was varied fr...
Methodology for Performance Analysis of Textile Effluent Treatment Plants in Bangladesh
Chemical Engineering Research Bulletin, 2009
The efficiency of individual units of an effluent treatment plant (ETP) determines the overall performance of the plant and the final effluent quality. In this study an ETP of a composite textile industry in Bangladesh was investigated using this method. Water samples were collected from the main units of the ETP and were analysed for key parameters. The results were used to diagnose problems with the treatment units and to suggest modifications. From this, a simple but robust methodology was developed for evaluating the performance of the different treatment units and the ETP as a whole that could be implemented by ETP managers on a regular basis to improve the performance so that the effluent leaving the factory meets national standards and conforms to the requirements of international buyers. The results showed that poor management, especially chemical dosing, was seriously affecting the ETP's performance and that simple measures could address the problems.
Textile industries are the major contributor to environmental pollution and health hazards by generating huge amount of effluents that contain several pollutants and coloring agents. The concentration of these pollutants can be reduced to the permissible limit with the help of an Effluent Treatment Plant (ETP). The study was conducted to observe the textile effluent management techniques of an Effluent Treatment Plant (ETP) of Fakir Knitwear Limited (FKL), Narayanganj, Bangladesh. FKL set up a biological treatment plant to treat the effluent generated by the industry. Different effluent quality parameters were investigated at different stages in ETP. The effluent of the outlet was dark colored probably because of soluble coloring materials of the effluent but it is comparatively better than that of raw wastewater. There were found higher EC values than the standards which indicated that the greater amount of salts in the water due to dumping of solid wastes and discharging of industrial effluents. The highest TDS value 2054 ppm was observed at the screening pit unit than the other parts of the ETP. The highest DO was found 4.58 ppm in clarification tank which was within the standard value of aquaculture. The study also showed that the lowest BOD (24 ppm) and COD (145 ppm) was found at the outlet which was comparatively better than others. Although the effluent from the outlet contained pollutants, these effluent quality was comparatively good than the untreated waste water discharged from the industry. After treatment, the effluent of outlet moderately ensures the standard quality for aquaculture and irrigation. The results suggested that it is obvious to run the ETP regularly to improve the quality of effluents to save our native environment from the harmful effects of wastewater.
Water Practice and Technology
The study was executed at Kalurghat industrial area to determine the efficiency of effluent treatment plants by testing different physicochemical parameters. Results revealed that only 3 out of 9 industries treated their effluents efficiently and discharged following the standards of Department of Environment. The remaining industries viz. Alfa Textile treated their effluent but the values of pH (10.2), dissolve oxygen (DO) (3.6 mg/L), biochemical oxygen demand (BOD) (89 mg/L), chemical oxygen demand (COD) (282 mg/L), total suspended solid (TSS) (221 mg/L), and electric conductivity (EC) (4,003 μS/cm) exceeded the standards, and released untreated effluents directly into the environment. Smart Jeans didn't maintain the standard of EC (1,927 μS/cm), DO (3.2 mg/L), BOD (96 mg/L) and COD (216 mg/L). Asian Apparels EC (1,973 μS/cm), DO (4 mg/L), BOD (79 mg/L), and COD (221 mg/L) weren't up to the standards. Similarly, Mans Fashion EC (1,243 μS/cm), DO (3.7 mg/L), TSS (180 mg/L),...
http://www.ijsred.com/volume2/issue5/IJSRED-V2I5P88.pdf, 2019
Industrial wastewater treatment describes the processes used for treating wastewater that is produced by industries as an undesirable by-product. After treatment, the treated industrial wastewater may be reused or released to a sanitary sewer or to surface water in the environment. The textile dyeing and washing industry plays an important role in the economic growth as well as the environmental sectors of Bangladesh. Effluent Treatment Plants or (ETPs) are used by leading companies in the pharmaceutical and chemical industry to purify water and remove any toxic and non-toxic materials or chemicals from it. These plants are used by all companies for environment protection. Effluent Treatment Plant (ETP) is one of the most important & prominent part of Textile dyeing / Wet process industry. In Bangladesh many industrial units are located near the banks of the rivers and they do not use Effluent Treatment Plant (ETP) for wastewater treatment. As a consequence, industrial units dump effluent directly into the river water without consideration of the environment. To combat ecological degradation it is mandatory for textile dyeing / wet process industry to install an effective effluent treatment plant (ETP). This study, focused on investigating the best possible solution to install the most economic and effective effluent treatment plantof textile dyeing / wet process industries in Bangladesh. None of the methods except biological method can satisfy discharge standard. Combined physico-chemical and biological method is considered as the most efficient method. The discharged water is properly treated in the ETP plant to ensure that the discharged waste water is not harmful for environment.Important water quality parameters like pH, TSS, BOD, COD and presence of metals were measured by testing samples. The samples were collected from effluent water of a renowned and international buyer recognized industry named Wash & Wear Ltd in Ashulia, Savar, Bangladesh. The results show that all the water quality parameters are within the permissible limits. Keywords—Waste water, Effluent treatment plant (ETP), Biological treatment, efficiency, water quality, Lab type ETP, BOD, COD, PH, Environment, etc.
IRJET- Overview of Effluent Treatment Plant Used for Textile Indstry
IRJET, 2021
bstract-India is undergoing in rapid increase of industrial sector and it is concerning by many environmental factors as waste from these industries is directly dumped in water bodies and it can create serious impact to aquatic life and ecology. So, this effluent needs to be treated well before being dumped. Effluent from various types of industries such as textile, pharma, pigment, dairy contains exaggerated amount of toxic chemicals and other chemical factors. Certain processes such as reactive dyeing in textile industries require large quantities of alkali but pre-treatments and some washes can be acidic. It is therefore necessary to adjust the pH in the treatment process to make the wastewater neutral. Speaking of the textile industries, it needs enormous amount of water and variety of chemicals for different operations such as washing, dying, etc. the spillage of these chemicals, cause significant hazard to environment. On the other hand, dairy industry's wastewater generally contains fats, lactose, proteins, nutrients which increase the Biological Oxygen Demand (BOD) of water. It may also contain detergents and sanitizing agents which are obtained by cleansing process and it leads to increase in Chemical Oxygen Demand (COD). This paper gives an overview of effluent treatment plant used in textile industrial sector. This paper also provides a statistical data about ETP's and factors affecting it.
Rapid industrialization is the main source of waste water production by industries and it is the burning issue of the time. The present study was carried out in the laboratory of NFC Institute of engineering and fertilizer research, Faisalabad to estimate the waste water parameters in different areas of Faisalabad City. Six textile industries were chosen for sampling, samples were collected randomly and were subjected to analyze for various parameters like, pH, dissolved oxygen (DO), biological oxygen demand (BOD), chemical oxygen demand (COD), total suspended solids (TDS), electrolyte conductivity (EC), turbidity, temperature. EC was estimated by conductivity / TDS / temp meter. The pH was determined by using pH meter determined by evaporation COD were measured by a five days standard method in laboratory. The ranking of wastewater treatment facility and hygienic conditions inside the industries were also made on the basis of questionnaires. Overall the wastewater generated from in...
Physico-chemical Quality and Efficiency Study of Textile and Garments Effluent
The objective of this study was to ascertain textile and garments effluents’ quality parameters and suitability for irrigation and aquaculture. Concentration of different parameters i.e. pH, temperature, color, odor, electrical conductivity (EC), dissolved oxygen (DO), total dissolved solids (TDS) and concentration of ionic constituents viz. Na+, K+, Ca2+ and PO42- of effluents were investigated in Bhaluka industrial area of Mymensingh, Bangladesh during August to November, 2013. Study revealed that there were distinct variations in values of different parameters. Among the samples, pH values ranged from 7.5 to 9.8 indicating alkalinity of water. Temperature (26.8-30.2oC) was found within permissible expelling limits. Observed color and odor of the effluents indicated poor quality to use for irrigation and aquaculture purposes. EC value (94.87-365.58 µScm-1) indicated low salinity level of the effluents. DO was within the range of 0.30 to 1.3 mg/L indicating aquatic life was under stress. Considering TDS (53.68 to 267.05 mg/L), all the samples were rated as fresh water (<1000 mg/L). Ratios of mean concentrations to background values were ranked in this sequence: Na+> K+> PO43-> Ca2+. Overall study revealed that due to imbalance in values of different water quality parameters all of the samples were unsuitable for irrigation and aquaculture.
The study was conducted to investigate the effluent management techniques and physicochemical properties of effluents in different station of Effluent Treatment Plant (ETP) in Purbani Group during the period from December 2011 to June 2012. Nine water samples were collected from nine different points of the ETP in the Purbani Group. The results of the study revealed that the lowest temperature was found 33.4°c at the outlet. The highest pH was found 9.4 at the inlet and the lowest value was 6.8 at the neutralization tank. The highest DO was found 5.90 ppm at the oxidation tank and sedimentation feeding tank, while 4.1 ppm was found at the outlet. The highest EC was found 4171 µS/cm at the inlet of the ETP, where the lowest was found 1902 µS/cm at the sludge thickener. The study also showed that the lowest TDS (1132 ppm), BOD (23 ppm) and COD (95 ppm) was found at the outlet which was comparatively better than others. Although the effluent from the outlet contained pollutants, these effluent quality was comparatively good than the untreated waste water discharged from the industry.