Industrial wastewaters entering a water body represent to an overwhelming wellspring of natural contamination in waterways. It influences both the water quality and the microbial and amphibian greenery. With contending requests on constrained water assets, attention to the issues required in water contamination, has prompted to significant open level-headed discussion about the natural impacts of Industrial effluents released into oceanic situations. Raw petroleum, refined petroleum items, and in addition polycyclic aromatic hydrocarbons are universal in different natural compartments. They can bioaccumulation in natural pecking orders where they upset biochemical or physiological exercises of numerous living beings, in this manner bringing about carcinogenesis of a few organs, mutagenesis in the hereditary material, impedance in conceptive limit and/or creating and causing hemorrhage in exposed population. The cause/impact of oil poison are typically evaluated by utilizing organic end guide parameters alluded toward as biomarkers. Defilement of soil emerging from spills is a standout amongst the most constraining components to soil ripeness and consequently edit profitability Petroleum Refinery, Petrochemicals effluents are described by their irregular turbidity, conductivity, chemical oxygen demand (COD), total suspended solids (TSS), Biological oxygen demand (BOD), and total hardness. Petroleum Refinery, Petrochemicals effluents containing high grouping of microbial supplements would clearly advance an after-development of essentially high coliform sorts and other microbial structures. Natural contamination is constantly obvious, and the contamination is aggravated via arrive based sources, for example, the infrequent release of crude sewage through tempest water outlets, the effluents from refineries, oil terminals, and petrochemical plants. Squander effluents rich in decomposable natural matter, is the essential driver of natural contamination.

REVIEW OF ESTIMATION THE EFFECTS OF PETROLEUM REFINERY EFFLUENTS ON THE PHYSICOCHEMICAL PROPERTIES FOR SURFACE WATER

510296

English

Industrial wastewaters

Petroleum Refinery

Surface Water.

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This study determined the seasonal impacts of wastewaters from Ikeja industrial estates on the water quality of proximate Iya Alaro River being one of the longest rivers employed for irrigational and washing purposes in the estate.  Wastewater samples from industrial estate were collected at the point of discharge of effluents into the streams and at spatial interval of 50 to 200 meters upstream and downstream of the discharge point over a two- year period (2005-2007) .The effluents were analysed for physico-chemical parameters using standard methods. At  discharge point during dry and rainy seasons, the pH were acidic  (5.51 ± 0.16 to 6.46 ± 1.27 and 6.13 ± 0.96 to 6.80 ± 1.04).Total Dissolved Solid and Electrical Conductivity levels showed significant difference (p < 0.05) between seasons at discharge points and higher than permissible levels at upstream and downstream. Mean levels of Dissolved Oxygen (DO) were low at discharge points during the dry and rainy seasons (2.20 ± 0.66 to 3.93 ± 0.71 and 2.41 ± 0.30 to 2.83 ± 0.72). Biochemical Oxygen Demand and Chemical Oxygen Demand increased in the range of 579-1186 mg/L and 1247-2610mg/L respectively from March to July with low levels of DO ranging from 1.70 to 3.70 mg O2/L. Mean levels of Nitrate were within permissible limits downstream and upstream and higher in rainy than dry seasons at the discharge points. Sulphate levels detected were below WHO levels of 400mg/L while Chromium levels were above the limits of 0.05 mg/L. Mean levels of Phosphate at discharge points was higher (31.97 ±1.12mg/L) during dry season of the second year, and were also higher upstream and downstream than permissible limits. Manganese showed significant difference (p < 0.05) at the discharge points.  Downstream accumulations were relatively higher for Copper (4.04mg/L) and Manganese (4.10mg/L) in the dry season and Cadmium(5.93mg/L) in the rainy season. It showed that industrial wastewater majorly caused the stream to be polluted and unsuitable for drinking. The degradation of the water quality of proximate streams in the estate therefore needs preventive and remedial measures of combined central effluent and treatment plants in order to bring back the waters to a level before the pollution discharges.

Keyword : Industrial wastewaters

REVIEW OF ESTIMATION THE EFFECTS OF PETROLEUM REFINERY EFFLUENTS ON THE PHYSICOCHEMICAL PROPERTIES FOR SURFACE WATER

Seasonal Impact of Ikeja Industrial Wastewaters on Water Quality of Proximate Iya Alaro River in Lagos, Nigeria

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