Impacts of Industrial Effluents on Kalri Baghar (K.B) Feeder Canal Water

This article is aimed at monitoring the quality of Kalri Baghar (K.B) Feeder canal water and emcompasses the review of literature of the rivers, reserviors and lakes in view of various aspects of water and wasterwater quality of different regions.

This study focused the impact of sewage water added to K.B.Feeder canal, while it passes through SITE area Kotri. The area of K.B.Feeder canal under investigation was about km left from the exit of Kotri Barrage. The current investigations enabled us to fix five sampling stations along canal and five from sewage water draining into canal. Physical parameters such as temperature, pH, turbidity and conductivity were recorded according to standard procedures. The significant parameters in water quality and pollution control; (DO), COD and BOD were estimated. Sewage water was totally devoid of DO, it contained an average of 298 – 1056 mg/l COD and 221-864 mg/l BOD which reveals the high level in sewage water than NEQS values set by EPA Government of Pakistan.

The concentrations of DO, COD and BOD at the 1ST point Colgate Palmolive were within the values between 6.78 – 9.0 mg/l, 20 – 40 mg/l and 9.0 – 28 mg/l respectively. However, decline in DO levels and incline in BOD and COD levels upto 4.4, 66 and 43 mg/l respectively were found in K.B.Feeder canal  with its passage from  near .

The nutrients including nitrogen based on the determination of nitrate-nitrogen were assessed in K.B.Feeder canal and Site Area Kotri effluent. The levels of chlorides, sulphates and hardness in canal water varied within the limits 46 – 122 mg/l, 36 – 73 mg/l and 45 – 132 mg/l.

 

Trace elements (Fe, Cu, Ni, Pb and Cd) in the canal and effluent were determined by Flame Atomic Absorption Spectrophotometer. In all these metals, iron was found to be dominant and cadmium contributed its lowest contents. In canal water Fe concentration fluctuated between 0.35 – 0.94 mg/l, Cu 0.021 – 0.09mg/l, Ni 0.013 – 0.055mg/l, Pb 0.025 – 0.092mg/l while Cd 0.003 – 0.008mg/l. The presence of higher levels of lead up to 0.09mg/l at some locations of canal was of great concern for acquatic environment. The over all trend of the different metal contents were placed in the following decreasing order: Fe > Pb > Ni > Cu > Cd

The work that has been described in this thesis shows that the K.B.Feeder canal is dirty and several locations unfit for human consumption. This is due to the heavy loading of industrial effluents from industrial area. The pollution can and should be cleaned to. It is a hazard to human health and it likely has sub-lethal effects on fish populations and the rest of acquatic ecosystem. It is the most improtant to note that the K.B.Feeder canal is a precious resource, valuable for many reasons and it is quite wrong to treat it as a sewer. To reduce the pollutants load on the canal, oxidation ponds (waste stabilization ponds) are designed for the treatment of industrial effluents before direct disposal to K.B.Feeder canal.

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