Physico -chemical and Budgeting study of Wastewater from Latifabad and Qasimahad Talukas of Hyderabad District, Pakistan

Abstract

The wastewater from South West parts of Hyderabad district ie. Latifahad Taluka included Hussainabad areas is disposed off into Southem Sewage Treatment Plant (SSTP) and agriculture ficks, whereas from Qasimabad Taluka, it goes into open fields. During this study. some effects of biological treatment were noted at SSTP and Qasimabal areas. The transparency increased from 5.25 to 12.3cm and 4.92 to 19cm, dissolved oxygen increased from none to 4.7 mg/l and none to 3.7 mg/l, biological oxygen demand (BOD,) decreased from 243 to 40 mg/l and 118 to 49 mg/l, chemical oxygen demand (COD) decreased from 348 to 61 mg/l and 429 to 75 mg/l, total Kjeldahl nitrogen decreased from 27.8 to 1.26 mg/1 and 20.8 to 0.9 mg/l at SSTP and Qasimabad open fields respectively. Some positive results were also recorded in total phosphate content during biological treatment of wastewater. The total quantities of wastewater discharge from these areas are calculated to be 36067.3 cubic meters per day (m³/day) (9.53 MGD). The results indicate that 8.961 ton/day (t/d) of chloride. 0.15 td of total hydrolysable phosphate, 0.789 t/d of Kjeldahl nitrogen, 59.67 Ud of total residues, 45.004 ud of total filterable residues, 14.105 t/d of non-filterable residues, 6.8.3 t/d of sodium, 2.734 ud of calcium, 2.751 t/d of magnesium and 0.746 t/d of potassium are being discharged from these localities.