The Analysis and Evaluation of Water Quality in the Artificial Reefs Areas, Haizhou Bay

2014 ◽  
Vol 955-959 ◽  
pp. 1368-1375
Author(s):  
Shuo Zhang ◽  
Zhu Zhu ◽  
Chun Mei Gao
Keyword(s):  
Water Quality ◽  
Evaluation Method ◽  
Sea Water ◽  
Artificial Reefs ◽  
Nutrient Level ◽  
Index Method ◽  
Haizhou Bay ◽  
Class 1 ◽  
Grade 3 ◽  
A Site

According to the survey data of water quality from 2010 of fifteen monitoring sites which in the area of artificial reefs, one mass index of water quality evaluation method, comprehensive quality index method of Water quality and eutrophication level index method were used to analyze the water quality status in Haizhou Bay. The results shows that, each site BOD5, COD, DIN accord with standard of sea water quality class 1. DIP mostly belong to 2 class standard; In addition to four monitoring sites’ water integrated quality in the slight pollution status for grade 3, the rest of the eleven regions of the sea water is relatively clean for grade 2; This sea water’s N/P maintain the balance basically, In addition to a site appears eutrophication phenomenon, most are in low and medium nutrient level.

scholarly journals Analysis of the water quality condition of the Zijiang River in summer and the applicability of evaluation methods

2021 ◽  
Vol 237 ◽  
pp. 01027
Author(s):  
Tao Zhang ◽  
Peng Xiang ◽  
Shijiang Zhu ◽  
Yang Liu ◽  
Wen Xu ◽  
...  
Keyword(s):  
Water Quality ◽  
River Water ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Nutrient Status ◽  
River Water Quality ◽  
Single Factor ◽  
Index Method ◽  
Factor Evaluation ◽  
Status Index

The single-factor evaluation method, improved Nemerow index method, fuzzy mathematical synthesis evaluation method and comprehensive nutrient status index method were used to evaluate the water quality of the Zijiang River in summer, and to analyze the applicability of the evaluation methods. The results show that: (1) The Zijiang River is heavily polluted with nitrogen and TN is the main pollutant in the summer. The overall nutrient status index is 34.33, which is not eutrophic. (2) The single-factor evaluation method is simple and suitable for rapid identification of excessive pollutants, but cannot reflect the water quality. the Nemerow index method takes into account the weight of each evaluation factor in the river water quality, and is suitable for making a comprehensive evaluation of the river water quality, but has a certain degree of subjectivity when classifying the water quality. The fuzzy comprehensive evaluation method is suitable for reflecting the influence of different evaluation factors on water quality by calculating the weight and membership degree of each evaluation factor, but the calculation is complicated.The Integrated Nutrient Status Index method is suitable for determining whether eutrophication is occurring in a water body and cannot determine the water quality category.

scholarly journals Water Quality Evaluation of Wenyu River Based on Single Factor Evaluation and Comprehensive Pollution Index Method

2021 ◽  
Vol 20 (3) ◽  
Author(s):  
Li Linjin ◽  
Men Baohui ◽  
Peng Rui
Keyword(s):  
Water Quality ◽  
Evaluation Method ◽  
Pollution Index ◽  
Ammonia Nitrogen ◽  
Single Factor ◽  
Water Quality Evaluation ◽  
Index Method ◽  
Class V ◽  
Factor Evaluation

Wenyu River is the “mother river” in Beijing. In recent years, the research on the water quality of the Wenyu River has increased gradually. In this paper, the monitoring data at Shahe Reservoir, Lu Tuan Gate, Xin Bao Gate, and Ma Fang sections for each month in 2019 were adopted. The single-factor evaluation method and the comprehensive pollution index method were selected to analyze the current situation of the water quality of Wenyu River in the Chang Ping section and its temporal and spatial variation trend. The single factor evaluation method showed that the dissolved oxygen exceeded the standard seriously in all other months of the year except that the situation was better in May, June, and July. The ammonia nitrogen content reached the highest level in January, followed by a month-by-month decreasing trend. After June, each section basically met the requirements of Class v water quality. The comprehensive pollution index method shows that the water quality of Shahe reservoir varies greatly throughout the year, and it is in grade v for 6 months. The evaluation results of both methods show that the water quality of all sections of Wenyu River in 2019 was mostly in category v.

Application of PP Model in Water Quality Evaluation of Dehuixin River

2014 ◽  
Vol 1078 ◽  
pp. 149-153
Author(s):  
Yue Min Wang ◽  
Sen Yan Li ◽  
Chun Han ◽  
Peng Cheng Li ◽  
Jia Rong Wang
Keyword(s):  
Genetic Algorithm ◽  
Water Quality ◽  
Quality Evaluation ◽  
Evaluation Method ◽  
Projection Pursuit ◽  
Pollution Index ◽  
Fuzzy Evaluation ◽  
Water Quality Evaluation ◽  
Index Method ◽  
Calculation Analysis

This paper introduces the method of Projection Pursuit the idea, principle, modeling steps and application of the model in water quality evaluation of Dehuixin river. Use the Real-code Accelerating Genetic Algorithm to optimize the problem and then comparing the result with other results of Pollution Index Method and Fuzzy Evaluation Method. It shows that the method of Projection Pursuit can better evaluate the water quality, its result has higher objectivity and authenticity through the calculation, analysis and comparation.

scholarly journals Analysis of Relationship between Chemical Oceanography Conditions and Coral Reef Ecosystems in Damas Waters, Trenggalek, East Java

2020 ◽  
Vol 9 (3) ◽  
pp. 113
Author(s):  
Valessa Senshi Moira ◽  
Oktiyas Muzaky LuthfI ◽  
Andik Isdianto
Keyword(s):  
Water Quality ◽  
Coral Reefs ◽  
Sea Water ◽  
Quality Parameters ◽  
Artificial Reefs ◽  
Marine Biodiversity ◽  
Measurement Tool ◽  
Coral Reef Ecosystems ◽  
Relationship Of ◽  
The Relationship

Indonesia is known as one of the world's marine biodiversity centers with its rich coral reefs. Coral growth depends on environmental conditions, which in reality do not always remain due to disruptions originating from nature or human activities. The growth of coral reefs in a sea water is strongly influenced by the quality of its waters such as chemical oceanographic factors namely salinity, pH, DO, nitrate and phosphate. The data collection was carried out twice in September and November 2019 in Damas Waters, Trenggalek, East Java. The waters of Damas Beach are located in Karanggandu Village, Watulimo District. The purpose of this study was to determine the condition of coral reefs in Damas Waters, to determine the effect of water quality on artificial reefs in chemistry in Damas Waters and to determine the relationship of quality parameters of chemical waters with artificial coral reefs in Damas Waters, Trenggalek, East Java. The sampling method is done by purposive random sampling that is determining the sample with certain considerations. The location points used by 20 stations are spread, namely on artificial reefs, natural coral reefs, open seas and the area around the harbor. Measurements made include in situ water quality with a multiparameter measurement tool, namely AAQ. The results obtained that in all stations found good water conditions for the life of coral reefs, and also the analysis of the relationship of each parameter and coral reefs influence each other.

scholarly journals Analisis Kualitas Air yang Tercemar Merkuri (Hg) di Perairan Teluk Kao Halmahera Utara

2017 ◽  
Vol 6 (01) ◽  
pp. 46
Author(s):  
Azis Husen
Keyword(s):  
Water Quality ◽  
Atomic Absorption ◽  
River Water ◽  
Government Regulation ◽  
Sea Water ◽  
Quality Standard ◽  
Atomic Absorption Spectrophotometer ◽  
Class Iii ◽  
Class 1 ◽  
The Government

AbstrakPenelitian ini menganalisis dan menentukan tingkat pencemaran merkuri (Hg) di perairan Teluk Kao Halmahera Utara. Metode yang digunakan adalah metode survei observasi wawancara dan pengambilan sampel air dengan cara purposive sampiling sedangkan untuk analisis air dan sedimen mengunakan alat spektrofotometer penyerap atom (atomic absorption spectrophotometer, AAS).  Analisis kualitas air sungai, air laut di perairan Teluk Kao Halmahera Utara untuk pagi dan sore dengan nilai sebesar 0,004 mg/L - 0,0038 mg/L.  Sedangkan kandungan merkuri (Hg) untuk sedimen pagi dan sore dengan nilai 0,0032,  mg/L - 0,0076 mg/L.  Berdasarkan dari hasil tersebut bahwah mutu air sungai Kobok dan Taolas di perairan Teluk Kao Halmahera Utara sudah tidak bisa dikonsumsi sesuai Peraturan Pemerintah Pengelolaan air minum secara konvensional (kelas 1), 0,001 ppm, (kelas 2 dan 3), 0,002 ppm dan (kelas 4). 0,005 ppm dengan demikian mutu air sungai Teluk Kao sudah tidak aman untuk di konsumsi bagi masyarakat Teluk Kao.  Sedangkan untuk sedimen sungai Kobok dan Taolas Teluk Kao sudah tidak lagi memenuhi Standar Bahan Baku Mutu sesuai Peraturan Pemerintah No. 82 Tahun 200 kelas I. 0,001 mg/L kelas II. 0,002 mg/L kelas III. 0,002 mg/L kelas IV 0,005 mg/L. Kata kunci: Pencemaran; merkuri (Hg);air sungai; air laut; sedimen AbstractThe research analyzed and determined the level of mercury (Hg) pollution in Kao Gulf waters of North Halmahera. Method used was survey, observation, and interview. Water sampling was conducted with purposive sampling. Water and sediment analysis was conducted using atomic absorption spectrophotometer (AAS). Analysis of river water and sea water quality in Kao Gulf waters of North Halmahera was conducted in the morning and afternoon with value of 0.004 mg/L – 0.0038 mg/L. Whereas, mercury (Hg) content for sediment in the morning and afternoon was 0.0032,  mg/L – 0.0076 mg/L. Based on the result, the water quality of Kobok and Taolas River in Kao Gulf waters of North Halmahera cannot be consumed because based on the Government Regulation on conventional drinking water management the water quality value is 0.001 ppm (class 1), 0.002 ppm (class 2 and 3), and 0.005 ppm (class 4); therefore, the water quality in Kao Gulf river is not safe to be consumed by the community in Kao Gulf. Regarding sediment of Kobok river and Taolas of Kao Gulf, it was no longer met the Quality Standard according to the Government Regulation No. 82/2001 which is:  Class I of 0.001 mg/L, Class II of 0.002 mg/L, Class III of 0.002 mg/L and Class IV of 0.005 mg/L. Keywords: Pollution; mercury (Hg); river water; sea water; sediment

MEASURES FOR ENVIRONMENT CONSERVATION IN ENCLOSED COASTAL SEAS

2017 ◽  
Author(s):  
Keizo Negi ◽  
Keizo Negi ◽  
Takuya Ishikawa ◽  
Takuya Ishikawa ◽  
Kenichiro Iba ◽  
...  
Keyword(s):  
Water Pollution ◽  
Water Quality ◽  
Water Mass ◽  
Sea Water ◽  
Red Tide ◽  
Water Environment ◽  
Quality Standard ◽  
Tokyo Bay ◽  
View Point ◽  
High Concentration

Japan experienced serious water pollution during the period of high economic growth in 1960s. It was also the period that we had such damages to human health, fishery and living conditions due to red tide as much of chemicals, organic materials and the like flowing into the seas along the growing population and industries in the coastal areas. Notable in those days was the issues of environment conservation in the enclosed coastal seas where pollutants were prone to accumulate inside due to low level of water circulation, resulting in the issues including red tide and oxygen-deficient water mass. In responding to these issues, we implemented countermeasures like effluent control with the Water Pollution Control Law and improvement/expansion of sewage facilities. In the extensive enclosed coastal seas of Tokyo Bay, Ise Bay and the Seto Inland Sea, the three areas of high concentration of population, we implemented water quality total reduction in seven terms from 1979, reducing the total quantities of pollutant load of COD, TN and TP. Sea water quality hence has been on an improvement trend as a whole along the steady reduction of pollutants from the land. We however recognize that there are differences in improvement by sea area such as red tide and oxygen-deficient water mass continue to occur in some areas. Meanwhile, it has been pointed out that bio-diversity and bio-productivity should be secured through conservation/creation of tidal flats and seaweed beds in the view point of “Bountiful Sea” To work at these challenges, through the studies depending on the circumstances of the water environment in the enclosed coastal seas, we composed “The Policy of Desirable State of 8th TPLCS” in 2015. We have also added the sediment DO into the water quality standard related to the life-environmental items in view of the preservation of aquatic creatures in the enclosed water areas. Important from now on, along the Policy, is to proceed with necessary measures to improve water quality with good considerations of differences by area in the view point of “Beautiful and bountiful Sea”.

Seagrass depth range and water quality in southern Moreton Bay, Queensland, Australia

1996 ◽  
Vol 47 (6) ◽  
pp. 763 ◽  
Author(s):  
EG Abal ◽  
WC Dennison
Keyword(s):  
Water Quality ◽  
Chlorophyll A ◽  
Suspended Solids ◽  
Light Attenuation ◽  
River Mouth ◽  
Total Suspended Solids ◽  
Quality Parameters ◽  
Depth Range ◽  
Moreton Bay ◽  
A Site

Correlations between water quality parameters and seagrass depth penetration were developed for use as a biological indicator of integrated light availability and long-term trends in water quality. A year-long water quality monitoring programme in Moreton Bay was coupled with a series of seagrass depth transects. A strong gradient between the western (landward) and eastern (seaward) portions of Moreton Bay was observed in both water quality and seagrass depth range. Higher concentrations of chlorophyll a, total suspended solids, dissolved and total nutrients, and light attenuation coefficients in the water column and correspondingly shallower depth limits of the seagrass Zostera capricorni were observed in the western portions of the bay. Relatively high correlation coefficient values (r2 > 0.8) were observed between light attenuation coefficient, total suspended solids, chlorophyll a, total Kjeldahl nitrogen and Zostera capricorni depth range. Low correlation coefficient values (r2 < 0.8) between seagrass depth range and dissolved inorganic nutrients were observed. Seagrasses had disappeared over a five-year period near the mouth of the Logan River, a turbid river with increased land use in its watershed. At a site 9 km from the river mouth, a significant decrease in seagrass depth range corresponded to higher light attenuation, chlorophyll a, total suspended solids and total nitrogen content relative to a site 21 km from the river mouth. Seagrass depth penetration thus appears to be a sensitive bio-indicator of some water quality parameters, with application for water quality management.

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