Phosphorus in Water Quality and Waste Management

Kroiß, H.; Rechberger, Helmut; Egle, Lukas

doi:10.5772/18482

Cited by 33 publications

(20 citation statements)

References 32 publications

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“…Furthermore, the trophic status of the Yemetu stream was classified as hypereutrophic during the sampling period. Phosphates are chemicals containing the element phosphorus, and in excess quantities, phosphorus can lead to water quality problems such as eutrophication and harmful algal growth [37]. Sources of phosphorous in surface water have been identified as human excreta, and some industrial and trade effluents [34].…”

Section: Discussionmentioning

confidence: 99%

Correlates of Pollution Load and Assessment of Water Quality Index of a Major Stream along Yemetu Community in Ibadan Nigeria

Amubieya¹,

Oloruntoba²,

Adejumo³

et al. 2020

EESRJ

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This study aimed at assessing the correlates of pollution loads and water quality index of a major stream along Yemetu community in Ibadan, Nigeria. Water samples were collected during the raining season at eight sampling points (S1 to S8) for four weeks for physicochemical and bacteriological analyses using standard methods described by American Public Health Association (APHA) (2005). Pearson correlation coefficient was used to identify correlated parameters and Water Quality Index (WQI) was used to classify the quality of the water. The pH at all sampling points were slightly acidic, Total coliforms and E. coli counts were higher than the permissible limits, BOD5 was significantly correlated with COD (r = 0.97, P<0.01), EC (r = 0.71, P<0.05), TDS (r = 0.75, P<0.05), TCC (r = 0.89, P<0.05), and E. coli (r = 0.86, P<0.05). The WQI ranged from 227 (very poor water) in S1 to 667 (water unsuitable for drinking) in S7. The study recommends effective monitoring of water quality of the stream (most especially the bacteriological characteristics) through the control of various anthropogenic activities around the stream by the appropriate authorities.

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Section: Discussionmentioning

confidence: 99%

Correlates of Pollution Load and Assessment of Water Quality Index of a Major Stream along Yemetu Community in Ibadan Nigeria

Amubieya¹,

Oloruntoba²,

Adejumo³

et al. 2020

EESRJ

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“…This was in accordance with recommendations of Bashar et al ( 2018 ) and required effluent TP content of 1 mg L −1 . The precipitant dose was calculated according to Formula ( 3 ) with the ratio: 1.8 gFe:1gP (Jiang et al 2004 ; Kroiss et al 2011 ). where K is the PIX dose (L day −1 ), Q is the raw wastewater flow intensity (m 3 day −1 ), TP req is the total permissible phosphorus content in treated wastewater (mg L −1 ), TP ENBR is the total phosphorus content after EBNR (mg L −1 ), S is the stoichiometric coefficient for FeCl 3 , and n is the excess precipitant coefficient.…”

Section: Methodsmentioning

confidence: 99%

“…This was in accordance with recommendations of Bashar et al (2018) and required effluent TP content of 1 mg L -1 . The precipitant dose was calculated according to Formula (3) with the ratio: 1.8 gFe:1gP (Jiang et al 2004;Kroiss et al 2011).…”

Section: Additional Phosphorus Post-precipitationmentioning

confidence: 99%

Mitigation of eutrophication caused by wastewater discharge: A simulation-based approach

Preisner

Neverova-Dziopak

Kowalewski

2020

Ambio

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Mitigation of eutrophication, intensified by excessive nutrient load discharge in wastewaters regulated by restrictive legal requirements, remains one of today’s most important global problems. Despite implementation of the Water Framework Directive, the Urban Wastewater Directive and the HELCOM recommendations, the actual condition of surface water is still not satisfactory. In response to the above, the study presents an alternative approach for surface water protection against eutrophication based on the selection of appropriate nutrient removal technologies. An activated sludge model simulation was used to enable the identification of environmentally justified nutrient removal systems with lowest eutrophication potential of treated wastewater conditioned by bioavailable nutrient forms content. Based on the outcome of the study, the 3-stage Bardenpho system was identified as the most efficient for bioavailable phosphorus removal, while the Johannesburg system proved to have the highest efficiency for bioavailable nitrogen removal. The proposed eutrophication mitigation approach underlines the need for a reconsideration of current legal regulations which ignore nutrient bioavailability and key eutrophication limiting factors.

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“…The mean value of PO 3 -P was significantly (t=-3.776, p< 0.004) higher during wet season than dry. According to Kroiss, et al [21] and Dunn et al [22], there isn't a lot of ortho-phosphate in water during dry season because it is incorporated into sediments and aquatic plants during wet season. Continuous accumulation of soil sediment in the bottom of the river will then make phosphorus to settle too deep to be reintroduced to the water surface.…”

Section: Seasonal Variations Of Water Parametersmentioning

confidence: 99%

Assessing the Seasonal Changes on Physicochemical Parameters and Major Nutrient Levels in Water and Sediments from Sulal River, Bureti Sub County, Kericho County, Kenya

Cherotich

Abong’o

Onyatta

2021

CSIJ

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Sulal River is a victim of nutrient pollution as it crosses different small-scale tea farms in Bureti Sub County, Kericho County. A study was conducted to evaluate different physicochemical parameters and major chemical fertilizer’s nutrients levels in water and sediments from Sulal River. In order to understand the degree of pollution in the river due to inflow of agricultural chemical fertilizer residue levels from its catchment, the samples were collected in the dry (February 2019) and wet seasons (November 2019). The ten chosen sampling sites stretched a length of 12 Km. Samples were analyzed for pH, dissolved oxygen (DO), total dissolved solids (TDS), electrical conductivity (EC), sediment and water content (WC), nitrate-nitrogen (NO3-N), phosphorous (PO3-P) and potassium (K) using standard methods. Results were analyzed using IBM SPSS 20. The average results during dry and wet seasons in water samples for pH were 6.72±0.05 and 6.38±0.21, DO 6.78±0.59 and 9.58±0.64 mg/L, EC 174±5.02 and 205±20.14 µS /cm, TDS 92±4.59 and 120.70±19.57 mg/L, NO3-N 0.58±0.21 and 1.19±0.22 mg/L, PO3-P 0.00±0.00 and 0.13±0.84 mg/L and K 0.26±0.08 and 0.84±0.19 mg/L respectively. The average results during dry and wet seasons in sediment samples for pH were 6.62±0.20 and 6.75±0.17, EC, 67±6.66 and 52±10.19 µS /cm, WC 16.96±3.95 and 129.84±5.00%, NO3-N 0.70±0.35 and 0.42±0.23 mg/kg, PO3-P 0.49±0.25 and 1.14±0.40 mg/kg and K 1.53±0.45 and 2.86±0.31 mg/kg respectively. The levels of P in water during wet season and in sediments samples in both seasons were however, above the WHO (0.025 mg/L) and KEBS (0.030 mg/L) recommended limit for drinking and domestic use and WASREB (0.005 mg/L) level for the likelihood of eutrophication. Availability of excess phosphorus can accelerate eutrophication. The diversity of cancers has also been associated with drinking water containing phosphorous levels. The water from Sulal River may be used for irrigation purposes but not for drinking and domestic purposes. Significant seasonal variations were observed in all parameters analyzed except NO3-N in sediments. This indicates that rainfall had a great effect on some soil physicochemical properties.

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Phosphorus in Water Quality and Waste Management

Cited by 33 publications

References 32 publications

Correlates of Pollution Load and Assessment of Water Quality Index of a Major Stream along Yemetu Community in Ibadan Nigeria

Correlates of Pollution Load and Assessment of Water Quality Index of a Major Stream along Yemetu Community in Ibadan Nigeria

Mitigation of eutrophication caused by wastewater discharge: A simulation-based approach

Assessing the Seasonal Changes on Physicochemical Parameters and Major Nutrient Levels in Water and Sediments from Sulal River, Bureti Sub County, Kericho County, Kenya

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