China is establishing its water quality standards for enhancing protection of aquatic life in freshwater ecosystems

Sun, Fubao; Mu, Yunsong; Leung, Kenneth M.Y.; Su, Hailei; Wu, Fengchang; Chang, Hong

doi:10.1016/j.envsci.2021.07.008

Cited by 32 publications

(11 citation statements)

References 41 publications

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“…Previous studies have focused on the exposure characteristics and source identification of HM in surface water and sediments of Taihu Lake [ 11 , 13 ]. Our previous investigation indicated that the number of fish, zooplankton, macrophyte, and benthic invertebrate species in Taihu Lake has declined significantly since 1980 [ 14 ]. Water pollution, caused by a variety of chemicals generated during anthropogenic activities, is a major threat to aquatic life.…”

Section: Introductionmentioning

confidence: 99%

Multiple Risk Assessment of Heavy Metals in Surface Water and Sediment in Taihu Lake, China

Yang

Sun²,

Su³

et al. 2022

IJERPH

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Taihu Lake is the third-largest freshwater lake in eastern China. The contamination of heavy metals (HMs) in Taihu Lake resulting from rapid economic development and population growth has raised significant concerns in recent years. In this study, the contents and spatial distributions of eight typical HMs (Hg, Cr(VI), As, Cd, Cu, Ni, Pb, and Zn) in the fresh surface water and sediments from Taihu Lake were investigated. The potential ecological and health risks posed by HMs were evaluated using multiple assessment methods. Risk quotients were used to assess the ecological risks of HMs, and chronic risk quotients of Cu, Ni, and Pb (>1.0) were found in the surface water of Taihu Lake. According to the geo-accumulation index (Igeo) and pollution load index (PLI) values, the lake sediments exhibited moderate risks of Cd and Hg. In general, the sediments were moderately contaminated by HMs based on the average risk index (RI < 300). Spatially, a high ecological risk posed by the HMs existed in the sediments of northern Taihu Lake (RI > 300), while the sediments in the southwestern and eastern regions had moderate risk levels. The non-carcinogenic risk levels of Hg, Cd, Cu, and Zn were acceptable based on the exposure characteristics of residents living around Taihu Lake. The carcinogenic risk levels of Cr(VI), As, Pb, and Ni through drinking water were acceptable. However, the ingestion of Cr(VI), As, and Ni through drinking water and fish consumption may pose certain health risks. Therefore, the levels of toxic metals, in particular, Cr(VI), As, and Ni, in edible organisms should be monitored periodically and controlled to alleviate the potential carcinogenic risks through food ingestion. Our work provides valuable information concerning the ecological risk distribution of HMs in Taihu Lake, which is essential for protecting the safety of aquatic organisms and human health and minimizing HM pollution in the lake.

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Section: Introductionmentioning

confidence: 99%

Multiple Risk Assessment of Heavy Metals in Surface Water and Sediment in Taihu Lake, China

Yang

Sun²,

Su³

et al. 2022

IJERPH

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“…China has made a great deal of significant progress in the development of water quality criteria (WQC) since 2008 [ 70 ]. The GB3838-2002 needs to be updated to reflect the latest research results in aquatic organism criteria [ 71 ]. The obtained results in this study could help managers to establish specific TP management strategies.…”

Section: Discussionmentioning

confidence: 99%

Effects of Environmental Concentrations of Total Phosphorus on the Plankton Community Structure and Function in a Microcosm Study

Bai

Jiang

Fang

et al. 2022

IJERPH

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The excessive nutrients in freshwater have been proven to promote eutrophication and harmful algae blooms, which have become great threats to water quality and human health. To elucidate the responses of the plankton community structure and function to total phosphorus (TP) at environmental concentrations in the freshwater ecosystem, a microcosm study was implemented. The results showed that plankton communities were significantly affected by the TP concentration ≥ 0.1 mg/L treatments. In terms of community structure, TP promoted the growth of Cyanophyta. This effect was transmitted to the zooplankton community, resulting in the promotion of Cladocera growth from day 42. The community diversities of phytoplankton and zooplankton had been continuously inhibited by TP. The principal response curve (PRC) analysis results demonstrated that the species composition of phytoplankton and zooplankton community in TP enrichment treatments significantly (p ≤ 0.05) deviated from the control. For community function, TP resulted in the decline in phytoplankton photosynthesis. The chlorophyll fluorescence parameters were significantly inhibited when TP concentration reached 0.4 mg/L. In TP ≥ 0.1 mg/L treatments, the reductions in total phytoplankton abundances led to a continuous decrease in pH. This study can directly prove that the plankton community changes significantly when TP concentrations are greater than 0.1 mg/L and can help managers to establish specific nutrient management strategies for surface water.

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“…Air tanah berkualitas lebih baik tetapi mudah dieksploitasi berlebihan sehingga pencemar dapat masuk [3]. Amonia adalah gas nitrogen anorganik tidak berwarna dan berbau menyengat, dianggap sebagai salah satu pencemar utama perairan karena toksisitasnya tinggi, keberadaanya banyak pada air permukaan, dan mobilitas dalam perairan kuat [4][5]. Kadar alami amonia dalam perairan relatif rendah, tetapi limbah kegiatan manusia dapat meningkatkan kadarnya, seperti industri dan domestik [6].…”

Section: Pendahuluanunclassified

“…Karakteristik Amonia Amonia adalah gas tidak berwarna yang menyebabkan iritasi dengan bau menyengat, mirip bau bahan/cairan pembersih [11]. Amonia dapat meracuni kehidupan perairan pada pH dan suhu tinggi [4]. Terdapat 2 bentuk amonia pada perairan, yaitu gas amonia (NH 3 ) dan kation amonium (NH 4 + ).…”

Section: A Gambaran Umum Amoniaunclassified

Kajian Penyisihan Amonia dalam Pengolahan Air Minum Konvensional

Hamonangan¹,

Yuniarto²

2022

JTITS

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Print) F35 Abstrak-Kebutuhan air minum dipenuhi dengan pengolahan air minum menggunakan air baku berupa air permukaan dan air tanah. Salah satu pencemar utama air baku adalah amonia, yang dapat menyebabkan berbagai masalah, baik bagi kehidupan perairan, kesehatan manusia, dan kinerja pengolahan air minum. Terdapat 5 teknologi pengolahan air yang dapat menyisihkan amonia secara efektif, yaitu: (1) proses biologis, (2) breakpoint chlorination (BPC), (3) filtrasi membran reverse osmosis (RO), (4) proses ion exchange (IE), dan (5) proses air stripping. Proses biologis dan BPC dinilai sebagai 2 teknologi paling efisien dalam penyisihan amonia dengan keefektifannya relatif tinggi dan biaya relatif murah. Proses RO dan IE dapat menyisihkan amonia dalam bentuk amonium secara efektif, tetapi butuh biaya lebih tinggi. Penyisihan amonia dengan proses air stripping efektif pada konsentrasi tinggi yang tidak ditemukan pada air baku. Penyisihan amonia pada pengolahan air minum konvensional dinilai tidak efektif. Koagulan bermuatan positif tidak bereaksi dengan amonia berbentuk amonium dan unit filtrasi konvensional dengan media inert utamanya menyisihkan partikel tersuspensi. Klorin dan ozon adalah 2 desinfektan yang dapat menyisihkan amonia, tetapi ozon bersifat tidak stabil sehingga jarang digunakan. Klorin dapat menyisihkan amonia secara efektif, tetapi dosis klorin berlebihan dapat membentuk produk sampingan desinfeksi yang berbahaya.

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China is establishing its water quality standards for enhancing protection of aquatic life in freshwater ecosystems

Cited by 32 publications

References 41 publications

Multiple Risk Assessment of Heavy Metals in Surface Water and Sediment in Taihu Lake, China

Multiple Risk Assessment of Heavy Metals in Surface Water and Sediment in Taihu Lake, China

Effects of Environmental Concentrations of Total Phosphorus on the Plankton Community Structure and Function in a Microcosm Study

Kajian Penyisihan Amonia dalam Pengolahan Air Minum Konvensional

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