Assessment of pond effluent effect on water quality of the Asuofia Stream, Ghana

Amankwaah, D.; Cobbina, Samuel Jerry; Tiwaa, Y. A.; Bakobie, Noel; Millicent, E. A. B.

doi:10.5897/ajest2014.1665

Cited by 12 publications

(9 citation statements)

References 14 publications

(13 reference statements)

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“…The mean concentration of dissolved oxygen (DO) in the unimpacted water stretch (5.43 ± 0.55 mg/L) was slightly higher than in the impacted stretch (4.1 ± 0.55 mg/L), indicating that more oxygen consumption took place downstream, and this could be for the oxidation of waste discharge from Idomila fish farm into the stream (Table 4). This situation is similar to what Amankwaah et al (2014) reported in water quality assessment of Asuofia stream, Ghana. Hamblin and Gale (2002) reported that the biological and chemical oxygen demand of wastes discharged from land-based aquaculture facilities can reduce dissolved oxygen concentrations in lotic waters for short distances.…”

Section: Resultssupporting

confidence: 90%

“…Surface water sources can also be contaminated with nitrate by sewage and other wastes rich in nitrates. Statistically, there was no significant spatial difference (P > 0.05) between the impacted and unimpacted portions of the stream, and this agrees with the result of Amankwaah et al (2014). The mean nitrate values obtained for both the upstream (1.57 ± 0.89 mg/L) and downstream (1.63 ± 0.54 mg/L) in this study were far lower than the values of 5.2-8.6 mg/L and 16.4-22.4 mg/L reported by Mustapha and Omotosho (2005) in their work on the physicochemical properties of Moro Lake, Kwara State, Nigeria.…”

Section: Resultssupporting

confidence: 86%

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Impact of effluent discharge from a medium-scale fish farm on the water quality of Odo-Owa stream near Ijebu-Ode, Ogun State, Southwest Nigeria

Famoofo

Adeniyi

2020

Appl Water Sci

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This study aimed to assess the impact of effluent discharge from a medium-scale aquaculture fish farm on the water quality of a nearby receiving stream, Odo-Owa stream, near Ijebu-Ode (06° 49′ N, 003° 56′ E) in Ogun State, Southwest Nigeria. Some physicochemical water quality parameters of the effluent receiving stream were determined at seven selected sites, above and below the effluent discharge point into the stream to assess the effluent impact on the water body. The seven sampling stations comprised three stations (A-C) located upstream of the effluent discharge point (Station D), two stations (E and F) located downstream of Station D, while the seventh station (Station G) was a close-by reference groundwater source. The water quality parameters investigated include five physical parameters (water temperature, apparent color, true color, turbidity and transparency), seven general chemical parameters (pH, conductivity, TDS, total alkalinity, total hardness, ammonia and DO), seven major ions (Ca 2+ , Mg 2+ , Na + , K + , Cl − , SO 4 2− and HCO 3ˉ) , three nutrient compounds (PO 4 3− , NO 3 − and NO 2 −) and five heavy metals (Hg 2+ , Mn 2+ , Fe 2+ , Cu 2+ and Zn 2+). Water samples were collected from each sampling station twice per season: dry season (December 2013 and February 2014) and rainy season (April and July 2014), and analyzed in the laboratory using standard analytical methods. The result showed a significant difference (P < 0.05) in most of the investigated parameters between the impacted (Stations A-C) and unimpacted sections (Stations E and F) of the effluent receiving stream. Ammonia was about nine times higher; true color was more than five times higher; apparent color, depth, alkalinity, HCO 3 − and SO 4 2− were each more than two times higher, while pH, Ca 2+ , Na + , K + , Cl − and PO 4 3− were generally higher along the impacted section than the unimpacted section of the receiving stream. Except for Hg 2+ , the mean concentrations of all the heavy metals analyzed (Fe 2+ , Mn 2+ , Zn 2+ and Cu 2+) were also higher in the impacted portion than in the unimpacted portion. Seasonal variations across the water stretch showed that the mean (± SE) concentrations of TDS, turbidity, PO 4 3− , Mn 2+ , Fe 2+ and Hg 2+ were significantly higher (P ≤ 0.05) in the rainy season than in the dry season. The WQI was more fair (26-50) at the unimpacted (48.42) section of the water stretch as well as in the rainy (48.36) than it was in the impacted section (47.62) as well as during the dry season (45.36). The effluent discharge point, D (40.50), recorded the least WQI. This study showed that effluent discharge from the investigated medium-scale fish farm had a significant negative impact on the water quality of the receiving Odo-Owa stream and the indicator parameters comprised of ammonia, color and alkalinity.

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Section: Resultssupporting

confidence: 90%

Section: Resultssupporting

confidence: 86%

Impact of effluent discharge from a medium-scale fish farm on the water quality of Odo-Owa stream near Ijebu-Ode, Ogun State, Southwest Nigeria

Famoofo

Adeniyi

2020

Appl Water Sci

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“…All biological and chemical processes in an aquaculture operation are influenced by temperature (Devi et al, 2017). (Amankwaah et al, 2014). The mean DO concentration recorded for the farmed site was 5.65 ± 1.30 mg/l and that recorded at the control site was 6.42 ± 1.37 mg/l (Table 1).…”

Section: Fish Cage Culture Impact On Water Qualitymentioning

confidence: 86%

Effects of Fish Cage Culture on Water and Sediment Quality in the Gorge Area of Lake Volta in Ghana: A Case Study of Lee Fish Cage Farm

Osei¹,

Asmah²,

Aikins

et al. 2019

gjs

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The study determined the impacts of fish cage farming on the gorge area of Lake Volta. Water and sediment samples were collected from six sites in the Lee Cage Farm; four from sections with cages and two from about 1300 m upstream of the farm which served as the control. Water quality variables monitored were pH, temperature, dissolved oxygen, nitrate-nitrogen, ammonia-nitrogen, orthophosphate, faecal coliforms and total coliforms. Variables monitored in the sediment were organic matter, total carbon, total nitrogen and total phosphorus. There were variations in water quality between the farmed and control sites but the differences were not significant (p > 0.05). The mean counts of total coliform in the water ranged from 940 - 3318 cfu/100 ml while faecal coliforms ranged from 113 - 552 cfu/100 ml at the farmed site. The mean total coliform count at the control site ranged from 837 - 6960 cfu/100 ml while the faecal coliforms ranged from 48 - 120 cfu/100 ml. Therefore, there was significant variation between the faecal coliforms count at the two sites (p = 0.046). The results suggest that the general microbiological quality of the water at the study area was unacceptable.

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“…Thus, fish breeders should take steps to reduce pH levels in the summer, fall and winter seasons. Amankwaah, et al [6] investigated the physical and chemical properties of Sophia River in Ghana and concluded that the pH levels of fish ponds and downstream stations must be located in 7.6-7.9 and 7.48-7.73 ranges, respectively. Furthermore, they argued that the pH levels of upstream stations should be located between 7.25 and 7.5.…”

Section: Ph Changesmentioning

confidence: 99%

“…Amankwaah, et al [6] investigated the impact of effluents flowing from concrete fish ponds into Sophia River in Ghana on the physical and chemical properties of river water. Besides, Pulatsu, et al [7] examined the impact of effluents flowing from rainbow trout farms into Karasu River in Turkey.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Rainbow Trout Farm Effluents on Water Quality of Humestan River (Isfahan, Iran)

Sk¹

2017

IJOAC

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In the present study, the impact of effluents exiting from four rainbow trout farms on the water quality of Humestan River (Isfahan, Iran) across 11 stations was investigated. Water samples were collected in the spring, summer, fall and winter and such factors as dissolved oxygen, pH, BOD5, COD, ammonia, nitrite, nitrate and phosphorus were measured. The results showed that the amounts of phosphorus entering the River during spring, summer, fall and winter were 311.8 kg, 408.1 kg, 408 kg and 683.1 kg, respectively. Furthermore, the amounts of nitrogen entering the River during spring, summer, fall and winter were 1653.75 kg, 2164.05 kg, 2164 kg and 3622.5 kg, respectively. The amount of BOD and COD in all sampling stations and in all four seasons was less than 5 and 10 mg/lit, respectively. Due to the very low concentration of ammonia in water samples, no number was reported on the part of laboratories in this case. The amount of nitrite in all four seasons significantly exceeded the recommended level (0.02 mg/lit) (P <0.05). Given the whole year, it was indicated that the amounts of nitrate and total nitrogen were significantly less than the conventional level (2 mg/lit) (P <0.05). Moreover, the minimum and maximum amounts of phosphate were reported in the spring and winter, respectively, and this amount did not significantly exceed the critical level in any of the seasons (0.5 mg/lit) (P >0.05). In general, fish farming and effluents imported into Humestan River affected the water quality thereof.

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Assessment of pond effluent effect on water quality of the Asuofia Stream, Ghana

Cited by 12 publications

References 14 publications

Impact of effluent discharge from a medium-scale fish farm on the water quality of Odo-Owa stream near Ijebu-Ode, Ogun State, Southwest Nigeria

Impact of effluent discharge from a medium-scale fish farm on the water quality of Odo-Owa stream near Ijebu-Ode, Ogun State, Southwest Nigeria

Effects of Fish Cage Culture on Water and Sediment Quality in the Gorge Area of Lake Volta in Ghana: A Case Study of Lee Fish Cage Farm

Investigation of Rainbow Trout Farm Effluents on Water Quality of Humestan River (Isfahan, Iran)

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