การศึกษาผลกระทบของการขยายชุมชนและโรงงานอุตสาหกรรมต่อสภาพแวดล้อมทางน้ำในจังหวัดสงขลา

Abstract

By collecting the water samples fiom l0 sitcs al the mouth of Songkhla lagoon monthly for l2 months of 1992 and moniroring the water qualiries in term of chemical, physical and biological standard. The results of the study revealed that the water quality in this area prone to be polluted in summer season in some study sites. The DO value ranged from 0-4 mg /1. and BOD value ranged frorrr 0. l- 19. I 5 mg /l Total coliform and faecal coliform bacteria ranged fronr 2->160,000 MPN/100 nl And other studred results were as follow: ammonia 0-6.31 mg./I., nitrite 0-0.02? mg./l ., nitrate 0 004-0.221 mg./l , PhosPhxlc 0-0 ?9 ng./4 pH 7 l-8 1, salinity l-35 ppt., transparency 30- 164 cm., suspended sohd 4-337 nlg ,4 and lenrperature 26-.14 "C Thc r".ter quality from Ta Sa-arn ro Municipal fishing bay rs quite polluted by fishing activitics; such as fish processing plants, fish canning and fish marketing. so it should be awarcd and sct up sonle nrecns to corltrol or Jtrcvcnl the water pollution.