Analysis of Biogenic Secondary Pollution Materials from Sludge in Surface Waters

Česonienė, Laima; Mažuolytė-Miškinė, Edita; Šileikienė, Daiva; Lingytė, Kristina; Bartkevičius, Edmundas

doi:10.3390/ijerph16234691

Cited by 6 publications

(3 citation statements)

References 28 publications

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“…The linear regression equations developed can be used to calculate the correlation between the value of water quality indicators and water depth. The research showed that increasing the depth of the lake, can improve the ecological status of the lake by all indicators measured [45].…”

Section: Relation Of Hydromorphological Indicators With Hydrochemicalmentioning

confidence: 94%

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Relationship between the Water Quality Elements of Water Bodies and the Hydrometric Parameters: Case Study in Lithuania

Česonienė

Šileikienė

Dapkienė

2020

Water

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The larger and deeper lakes and ponds are, the better the conditions for spontaneous water purification, slower hydrobiological processes and slower accumulation of sediment. The goal of this research was to assess the ecological status of selected Lithuanian lentic water bodies and the impact of morphometric indicators on water quality. Multiple studies were conducted on 29 lakes and 10 ponds located throughout Lithuania in 2014–2018. The study proved that higher maxima and average depths of lakes correlate with lower Ptotal, Ntotal yield and macrophyte taxonomic composition values, indicating higher ecological status class. Higher chlorophyll a EQR, ichthyofauna taxonomic composition indicator for Lithuanian fish index LFI and Lithuanian lakes’ macroinvertebrate index indicates a higher ecological class. Larger lake areas contain smaller amounts of Ptotal and Ntotal, indicating better ecological status class; higher ichthyophane taxonomic composition in LFI, zoobenthos taxonomic composition indicator for Lithuanian lakes’ macroinvertebrates index (LLMI) and taxonomic composition of macrophytes MRI indicate better ecological status class. Larger lake areas contain lower chlorophyll a EQR values. Rapid water exchange improves the condition of the lake in addition to nitrogen, phosphorus and chlorophyll a EQR values. The faster the water exchange in the lake is, the lower the Ptotal and Ntotal values; faster water exchange in the lake also means higher chlorophyll a EQR values. However, slower water exchange indicates better ecological status of the macrophytic taxonomic composition of the MRI, the ichthyofauna taxonomic composition and the Lithuanian lakes’ macroinvertebrates index indicator of zoobenthos.

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Section: Relation Of Hydromorphological Indicators With Hydrochemicalmentioning

confidence: 94%

“…The results are presented in Figure 4. The research showed that increasing the depth of the lake, can improve the ecological status of the lake by all indicators measured [45].…”

Section: Relation Of Hydromorphological Indicators With Hydrochemicalmentioning

confidence: 94%

Relationship between the Water Quality Elements of Water Bodies and the Hydrometric Parameters: Case Study in Lithuania

Česonienė

Šileikienė

Dapkienė

2020

Water

Self Cite

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“…In many countries, large amounts of resources have been dedicated to the elimination of pollution sources. However, Česonien ė et al [7] found that the removal of pollution sources does not necessarily improve the quality of lake water because secondary pollution caused by sludge in the water can worsen the quality.…”

Section: Introductionmentioning

confidence: 99%

Automated Monitoring of a High-Speed Flocculation Flat-Bottomed Sludge Blanket Clarifier Pond during Drought and Flood Conditions

Chung³

2022

Water

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The occasional rains that occur during dry seasons often stir up the bottom sediment of reservoirs, which leads to high turbidity and electrical conductivity in raw waters received by water utility companies. A newly developed real-time precision multi-layer sensor (RPMS) system was used to monitor a high-speed flocculation flat-bottomed sludge blanket clarifier (HFSBC) pond in real time to solve the water quality problems caused by drought and flood conditions. The RPMS is capable of monitoring the thickness of a sludge blanket; if the coagulation and sedimentation processes of the HFSBC are not working well, the sludge blanket will be thin and have a low sludge concentration. Conversely, if the HFSBC is working properly, the sludge blanket will have a thick and highly concentrated layer of sludge. Any heavy metals that are not removed by water treatment processes will enter the water supply network, which will result in poor water quality for end users. Against the backdrop of intensifying climate change, the enhancement of automated monitoring systems and adaptation processes will be an important part of efforts to minimize and resolve acute changes in water quality.

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Effect of composite amendments on physicochemical properties of copper tailings repaired by herbaceous plants

Min

Xue

You

et al. 2022

Environ Sci Pollut Res

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Phytoremediation is considered to be the most environmentally friendly green restoration technology for dealing with mine waste. Adding amendments can improve the substrate environment for plant growth and enhance remediation e ciency. Herbaceous plants have become the preferred species for vegetation restoration in abandoned mines because of their fast greening and simple management. Considering that, in this paper, to explore the effect of composite amendments on physicochemical properties of copper tailings repaired by herbaceous plants, the untreated copper tailings were employed as the control group, whereas copper tailings repaired by ryegrass (Lolium perenne L.), vetiver grass (Vetiveria zizanioides L.) and tall fescue (Festuca arundinacea Schreb) with or without conditioners and straw combination into the compound amendments, were taken separately as the test group. After 6 months of planting, the pH, electrical conductivity, water content, available potassium, organic matter, total nitrogen and available phosphorus in the main physical and chemical properties of copper tailings in each experimental area were analyzed. The results showed that the electrical conductivity, organic matter and total nitrogen content of copper tailings were improved to a certain extent by planting herbs without treatment. Meanwhile, compared with the control group, all indexes of planting herbs showed an upward trend after adding composite amendments. Among them, pH, water content and available potassium content of copper tailings were enhanced more obviously. Furthermore, as discovered from the grey correlation analysis results, vetiver grass planted with composite amendments has the best comprehensive effect of improving the physicochemical properties of copper tailings, followed by tall fescue and ryegrass.

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Analysis of Biogenic Secondary Pollution Materials from Sludge in Surface Waters

Cited by 6 publications

References 28 publications

Relationship between the Water Quality Elements of Water Bodies and the Hydrometric Parameters: Case Study in Lithuania

Relationship between the Water Quality Elements of Water Bodies and the Hydrometric Parameters: Case Study in Lithuania

Automated Monitoring of a High-Speed Flocculation Flat-Bottomed Sludge Blanket Clarifier Pond during Drought and Flood Conditions

Effect of composite amendments on physicochemical properties of copper tailings repaired by herbaceous plants

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