scholarly journals Evaluation of Soil and Irrigation Water Quality in Caohai Lakeside Zone

2021 ◽  
Vol 13 (22) ◽  
pp. 12866
Author(s):  
Yi Tan ◽  
Quanquan Wei ◽  
Bangxi Zhang ◽  
Zijing Zheng ◽  
Jiulan Guo ◽  
...  
Keyword(s):  
Water Quality ◽  
Heavy Metal ◽  
Organic Matter ◽  
Soil Fertility ◽  
Irrigation Water ◽  
Metal Content ◽  
Nutrient Content ◽  
Heavy Metal Content ◽  
Current Status ◽  
Irrigation Water Quality

Due to the rapid population growth and over-application of fertilizers in the Caohai surrounding farmlands, controlling the non-point source pollution in the Caohai Lakeside Zone is significant for the local ecology balance and human health safety. A total of 54 soil and 24 irrigation water samples were collected in the Caohai Lakeside Zone to evaluate the current status of soil fertility and heavy metal pollution by measuring soil and water heavy metal content and soil physicochemical properties such as soil total nitrogen, total phosphorus, organic matter, and soil pH. These results showed that the total amounts of organic matter, nitrogen, phosphorus, potassium, and effective nutrient content in the Caohai Lakeside Zone were all at a rich level according to Chinese soil nutrient grade standard; the content of lead (Pb), chromium (Cr), cadmium (Cd), mercury (Hg), and arsenic (As) in the soil all exceeds the safety standard of Chinese classification of soil environmental quality assessment. In addition, the over-standard rates of Cd and Cr were 24.1% and 14.8%, respectively. On the whole, the comprehensive quality index (CQI) of the soil in the Caohai Lakeside Zone is 6.48, which is attributed to the heavy Cd pollution and the good soil fertility. The heavy metal content of the irrigation water met the requirements of irrigation water quality. It is feasible to use the irrigation water of Caohai Lake in the actual agricultural production process. Therefore, in terms of the comprehensive management and pollution control of Caohai, special attention should be paid to the control of Cd, Pb, As, and Hg pollution sources.

scholarly journals Irrigation water quality influences heavy metal uptake by willows in biosolids

2015 ◽  
Vol 155 ◽  
pp. 31-39 ◽  
Author(s):  
W. Scott Laidlaw ◽  
Alan J.M. Baker ◽  
David Gregory ◽  
Stefan K. Arndt
Keyword(s):  
Water Quality ◽  
Heavy Metal ◽  
Irrigation Water ◽  
Metal Uptake ◽  
Irrigation Water Quality ◽  
Heavy Metal Uptake

scholarly journals Use of Heavy Metal Content and Modified Water Quality Index to Assess Groundwater Quality in a Semiarid Area

Water ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 1115 ◽  
Author(s):  
Ehsan Maskooni ◽  
Mehran Naseri-Rad ◽  
Ronny Berndtsson ◽  
Kei Nakagawa
Keyword(s):  
Heavy Metals ◽  
Water Quality ◽  
Heavy Metal ◽  
Water Supply ◽  
Groundwater Quality ◽  
Metal Content ◽  
Quality Index ◽  
Oxygen Demand ◽  
Heavy Metal Content ◽  
Entropy Weighted

Groundwater is a major source of drinking and agricultural water supply in arid and semiarid regions. Poor groundwater quality can be a threat to human health especially when it is combined with hazardous pollutants like heavy metals. In this study, an innovative method involving entropy weighted groundwater quality index for both physicochemical and heavy metal content was used for a semiarid region. The entropy weighted index was used to assess the groundwater’s suitability for drinking and irrigation purposes. Thus, groundwater from 19 sampling sites was used for analyses of physicochemical properties (electrical conductivity—EC, pH, K+, Ca2+, Na+, SO42−, Cl−, HCO3−, TDS, NO3−, F−, biochemical oxygen demand—BOD, dissolved oxygen—DO, and chemical oxygen demand—COD) and heavy metal content (As, Ca, Sb, Se, Zn, Cu, Ba, Mn, and Cr). To evaluate the overall pollution status in the region, heavy metal indices such as the modified heavy metal pollution index (m-HPI), heavy metal evaluation index (HEI), Nemerow index (NeI), and ecological risks of heavy metals (ERI) were calculated and compared. The results showed that Cd concentration plays a significant role in negatively affecting the groundwater quality. Thus, three wells were classified as poor water quality and not acceptable for drinking water supply. The maximum concentration of heavy metals such as Cd, Se, and Sb was higher than permissible limits by the World Health Organization (WHO) standards. However, all wells except one were suitable for agricultural purposes. The advantage of the innovative entropy weighted groundwater quality index for both physicochemical and heavy metal content, is that it permits objectivity when selecting the weights and reduces the error that may be caused by subjectivity. Thus, the new index can be used by groundwater managers and policymakers to better decide the water’s suitability for consumption.

scholarly journals Status mutu air dan kandungan logam berat pada air dan sedimen di muara Krueng Aceh, Kota Banda Aceh

DEPIK ◽  
2018 ◽  
Vol 7 (2) ◽  
pp. 91-99
Author(s):  
Iqbalul Hadi ◽  
Suhendrayatna Suhendrayatna ◽  
Zainal Abidin Muchlisin
Keyword(s):  
Water Quality ◽  
Heavy Metal ◽  
Metal Content ◽  
Research Result ◽  
Heavy Metal Content ◽  
Ex Situ ◽  
Left Bank ◽  
Average Value ◽  
Quality Status

The aim of this research was to examine the status of water qaility of the Krueng Aceh estuary and heavy metal content in water and sediment. Data were taken by direct measurement in the field (in situ) and in the laboratory (ex situ). Three sampling stations were determined by purposive sampling, namely; in the left bank (nearest location with TPA), right bank (nearest location to market) and middle river (middle river area often passed by fisherman boat). Heavy metal analysis was conducted using AAS (Atomic Absorption Spectrophotometer) method and water quality status determined by STORET method. Based on the research result showed that that water quality parameters that have passed the standard of PP RI No. 82 Year 2001 Group III is TDS with an average value of 3332.78 mg / L, Pb with an average value of 0.052 mg / L, and Cd with an average value of 0.015 mg / L. The quality status of Krueng Aceh estuary water is classified into a moderate polluted or class C with a score of -23. The highest heavy metal content found in water sample is Pb with concentration of 0.106 mg / L. While, the average value of Pb was 0.052 mg / L and Cd was 0.015 mg /L, its have passed the quality standard specified in PP RI no. No. 82 of 2001. In addition, the highest heavy metal content found in sediment was Zn with the concentration of 29.633 mg /kg and its average value was still below the standard set by ANZECC ISQG-Low.Penelitian ini dilakukan untuk mengetahui status mutu kualitas air muara Krueng Aceh dan kandungan logam berat yang terdapat pada air dan sedimen. Metode yang digunakan dalam penelitian ini adalah metode survey. Data parameter yang diambil melalui pengukuran langsung di lapangan (in situ) dan di laboratorium (ex situ). Penentuan stasiun sampling secara purposive, yaitu pada muara Krueng Aceh dengan menetapkan tiga titik sampling yaitu pada tepi kiri (lokasi terdekat dengan TPA), tepi kanan (lokasi terdekat dengan pasar) dan tengah sungai (daerah tengah aliran sungai yang sering dilalui boat nelayan). Analisis logam berat dilakukan dengan metode SSA (Spektrofometri Serapan Atom) dan status mutu air ditentukan dengan metode STORET. Berdasarkan hasil penelitian dapat diketahui parameter kualitas air yang telah melewati baku mutu PP RI No 82 Tahun 2001 Golongan III adalah TDS dengan dengan nilai rata-rata 3332,78 mg/L, Pb dengan nilai rata-rata 0,052 mg/L, dan Cd dengan nilai rata-rata 0,015 mg/L. Status mutu air muara Krueng Aceh diklasifikasikan ke dalam tercemar sedang atau kelas C dengan skor -23. Kandungan logam berat tertinggi yang ditemukan pada sampel air di muara Krueng Aceh adalah Pb dengan konsentrasi 0,106 mg/L. Nilai rata-rata Pb 0,052 mg/L dan Cd 0,015 mg/L telah melewati baku mutu yang ditetapkan dalam PP RI No. 82 Tahun 2001. Kandungan logam berat tertinggi yang ditemukan pada sampel sedimen di muara Krueng Aceh adalah Zn dengan konsentrasi 29,633 mg/Kg dan nilai rata-ratanya masih berada di bawah baku mutu yang ditetapkan oleh ANZECC ISQG-Low. 

Heavy Metal Potential of Domestic Biological Wastewater Treatment Plant Sludge

2021 ◽  
Vol 4 (1) ◽  
pp. 90-113
Author(s):  
T.D.C. Pushpakumara ◽  
◽  
W.G.T. Sandakelum ◽  
Keyword(s):  
Heavy Metal ◽  
Wastewater Treatment ◽  
Wastewater Treatment Plant ◽  
Metal Content ◽  
Treatment Plant ◽  
Nutrient Content ◽  
Heavy Metal Content ◽  
Treatment Processes ◽  
Secondary Sludge

The use of sludge as fertilizers helps to the recycling of nutrients to the environment due to its beginning from wastewater and therefore relatively high content of nutrients and organic matter. However, wastewater does also contain hazardous compounds like heavy metals and micro pollutants which eventually are separated to the sludge during the treatment processes at the wastewater treatment plant. In order to improve the sludge quality, source tracking is a relatively cheap and effective way to find and eliminate hazardous compounds and prevent them from ending up in the sludge. The aim with this thesis was to investigate the fertilizer potential in sludge from wastewater treatment plant. The sludge is analyzed in terms of nutrient and heavy metal contents as well as physiochemical parameters. In order to determine the potential as fertilizer, the quality of the sludge is compared with other fertilizer alternatives, other sludge types and regulations for sludge use in agriculture. The work with sludge quality improvements in Gaborone is also investigated. Sludge from different stages along the treatment processes were collected in order to see differences in quality related to the treatment. The results shows that the samples of primary an aerobically treated sludge tend to have higher heavy metal content than the secondary sludge. The quality of the dry sludge samples indicates lower nutrient content than both the primary and secondary sludge, but similar heavy metal content. The analysis of dry sludge from indicates a low nutrient value and high heavy metal content in comparison to other selected fertilizer options and sludge from other. The processes for removal of nutrients from the wastewater are an important factor for the nutrient content in the sludge. Keywords wastewater; fertilizers; nutrients; sludge treatment

scholarly journals Heavy Metals Assessment of Abattoir Effluent on Surface Water Quality of River Katsina-Ala of Benue State, Nigeria

2015 ◽  
Vol 49 ◽  
pp. 90-98 ◽  
Author(s):  
Addy Jose Vershima ◽  
Kabough Jonathan Terkimbi ◽  
Azua Terese ◽  
Aliyu Ibrahim
Keyword(s):  
Heavy Metals ◽  
Water Quality ◽  
Heavy Metal ◽  
Surface Water ◽  
Rainy Season ◽  
Metal Content ◽  
Surface Water Quality ◽  
Dry Season ◽  
Heavy Metal Content

Water samples of six sampling sites (two downstream, two abattoir sites and two upstream sites) were analyzed using standard methods to determined and assessed heavy metal content of abattoir effluent on surface water quality of River Katsina-Ala, Benue State, Nigeria for rainy and dry seasons. Rainy season heavy metals results were; Cr6+ (0.032+0.06mg/l); Mn2+ (0.16+0.034mg/l); Cu2+ (0.86 +0.46mg/l); Pb2+(0.006+0.002mg/;Cd2+(0.0023+0.004mg/l) and the dry season results were: Cr6+(0.028+0.007mg/l); Mn2+(0.07+0.05mg/l); Cu2+(0.85+0.16mg/l); Pb2+(0.0030+0.014mg/l); Cd2+(0.0021+0.012mg/). Most heavy metals for both seasons were within the maximum permissible limit set by Federal Ministry of Environment, Nigeria (1991). The mean concentrations of Zn2+(1.70+0.29 mg/l) for rainy season and Zn2+(1.33+0.23mg/l) dry season were above the control and standard safe limits of < 1mg/l FMEnv (1991) for surface water quality. There was no significance difference (p<0.05) between the means from upstream and downstream sites for both seasons; though significance difference (p<0.05) existed at the abattoir sites. River Katsina –ala is slightly polluted. Heavy metal content from effluents from abattoir contributed to upset the physicochemical balance of the river. Bioaccumulation and bio-magnification of heavy metals may occur from prolong usage of the river water for drinking. It is suggested that the abattoir effluent be treated before discharge into the river to reduce environmental and health hazards.

scholarly journals Evaluation of heavy metal content in water and removal of metals using native isolated bacterial strains

2021 ◽  
Vol 22 (8) ◽  
Author(s):  
Laila Ibrahim ◽  
REZAN OMER RASHED ◽  
SIRWAN MUHSIN MUHAMMED
Keyword(s):  
Heavy Metals ◽  
Water Quality ◽  
Heavy Metal ◽  
Metal Content ◽  
Heavy Metal Content ◽  
Emission Spectrometry ◽  
Total Hardness ◽  
Water Quality Criteria ◽  
Chemical Contamination ◽  
Bacterial Strains

Abstract. Saleh LIF, Rashed RO, Muhammed SM. 2021. Evaluation of heavy metal content in water and removal of metals using native isolated bacterial strains. Biodiversitas 22: 3163-3174. Natural surface water sources are susceptible to chemical contamination, including heavy metals. The goals of this study were to isolate naturally occurring heavy metal-tolerant bacteria by evaluating their ability to remove heavy metals from Tanjaro River and assessing the river’s water quality. The potency of bacteria to remove heavy metals (Cd, Pb, Cu, Cr, Ni, Zn, Co, and Fe) from the medium was conducted by inductively coupled plasma-optical emission spectrometry. Results of physicochemical parameters of the water samples were as follows: temperature 11.9–31°C, pH 6.1–8.64, total dissolved solids 268–464 mg.l-1, total hardness 232–485 mg.l-1, and alkalinity 122–324.3 mg.l-1. The overall mean concentrations of the heavy metals were in the order of Zn >Cu> Pb> Ni> Co> Fe> Cr> Cd), with values of 0.086, 0.073, 0.71, 0.068, 0.051, 0.056, 0.031, and 0.024ppm, respectively Moreover, the concentrations were generally exceeded the water quality criteria of WHO in some observations. The isolates included both gram-negative (56.5%) and gram-positive (43.5%) bacteria. The isolates displayed different degrees of resistance to heavy metals with maximum tolerable concentrations (MTCs) ranging from (10-250) ppm. Bacillus safensis and Leucobacter chromiiresistens were respectively able to tolerate (80, 90 ppm) Cd, (250, 160 ppm) Pb, (210,100 ppm) Cr, (110, 90 ppm) Ni and (160, 170 ppm) Co, while, Proteus mirabilis could tolerate 90 ppm Cd. The isolates were able to remove 55.4%Pb, 53.1%Cr, 53.7%Ni, 47.7Fe, 61.4%Co, and 55.8% Cu from a medium supplemented with the mixture of these heavy metals. The finding of this study indicated that Tanjaro River was undergoing frequent changes in water quality. Native bacterial isolates possessed considerable tolerance to selected heavy metals, which provides promising candidates for use in bioremediation.

Rapid and High-Efficient Composting Process of Municipal Sewage Surplus Sludge

2013 ◽  
Vol 464 ◽  
pp. 184-188
Author(s):  
Chong Hao Huang ◽  
Yong Zhang ◽  
Jun Hong Luo
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Organic Matter ◽  
Total Phosphorus ◽  
Metal Content ◽  
Germination Rate ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Heavy Metal Content ◽  
High Efficient

This thesis is based on the target of the sludge which was dehydrated and percolated by sewage treatment plant. It conducts the feasibility analysis for the agricultural usage of sludge in cities, and carries out composting experiment of dehydrated and filtered sludge which lasts for about fifteen days. This thesis also does some research on the techniques of composting and parameters of sludge. This thesis has some researches on the temperature of sludge, moisture, organic matter, pH, total phosphorus content of nitrogen, heavy metals content and forms, the germination rate index (GI), and other changes during the process of composting. The results show that, after the composting, there has a significant decline in moisture content of the sludge and the organic matters; pH remains neutral; nitrogen has declined; total phosphorus increased. Composting can make majority of heavy metals reduced which was absorbed by the plant that means the decline of unstable heavy metal content. After the composting, germinations rate index (GI) is more than 50 percent, which shows that the composting products have no toxicity and indicates the maturity of composting. Through the analysis of the organic matter of the sludge plant, PH, plant nutrients (N, P,) content, heavy metal content and its forms of distribution and germination rate index (GI), it shows that the sludge of this plant has a good agricultural prospect.

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