بررسی کمی و کیفی فاضلاب صنایع نساجی واقع در منطقه ٢۱ تهران بزرگ و مقایسه پساب آن با استاندارد‌های سازمان حفاظت محیط زیست در سال۱۳٨٩

  Background and aims : wastewater from industry process has an important role in environmental pollution, discharge of this wastewater in acceptor natural environment, always, accompanied by irreparable effects .in the middle of industrial wastewater, discharge of textile industry existents severe environmental difficulties. So, for setting the control program, determination of quality and quantities wastewater in these industries are necessary.   Methods : in this study, dates in several part, include, the name of industry, wastewater generation (m3/day), type of generated pollution , type of wastewater disposal and chemical parameter such as pH, BOD5, COD, TSS, TDS in determined in 21 area in Tehran on 20 textile industry, have been considered , and the measure of this pollutant , have been compared with discharge standards of environmental protection organization.   Results : the results of this research showed that baft azadi, jame garan and patan jame textile industries have most measure of wastewater generation, respectively, and the average of BOD5 and COD of effluent are 59.1 and 2607.1 respectively, and in comparison of discharge standard for environmental protection organization 13.3% of industries, rise from authorized and 73.3% of industries exceed from authorized discharge COD. So Hamrang industry produced higher BOD5 and COD, 410 and 928 mg/L Respectively.   Conclusion : the results of this research showed that effluent of mostly textile industries located in this area (region) rise from standards of environmental protection organization and need for mostly determination and control.