Physicochemical Parameters and Heavy Metals Analysis of Wastewater from Kakuri Drain in Makera/Kakuri Industrial Layout, Kaduna, Nigeria

摘要

The Kakuri drain carries wastewater from Kakuri/Makera industrial layout and environ into river Kaduna. Samples were collected from points/stations 200m apart and labeled as points C, D, E and F, for a period of six months. Physico-chemical studies shows level of determined parameters to be within safe limits as recommended by WHO. Temperature reading showed an average of +_25.50C in water as against 26.50C on surface water. The Dissolved oxygen (DO) in the water was recorded as _+1.77mg/l, while the BOD had a mean of _+9.93mg/l .The level of heavy metals in the wastewater showed chromium with levels higher than the approved values recommended by WHO. Level of metals analyzed were as follows; chromium _+ 0.05853ppm. Lead _+0.03058ppm, copper _+1.08505ppm and _+0.45203ppm for zinc. Mean concentration of TDS for the various sampling points (C,ED,E and F) showed significant difference ( at 5% significant level), with the highest value of _+488.83mg/l in September and the lowest value of _+415.33mg/l recorded in April. Values may appear low, but the effect of bioaccumulation in crops raised by using such water for irrigation and subsequently consumed by man cannot be underestimated.