scholarly journals DISTRIBUTION CHARACTERISTICS OF WATER QUALITY, SEDIMENTS, AND BENTHOS IN THE ARIAKE SEA AREA

2011 ◽  
Vol 67 (4) ◽  
pp. 150-169
Author(s):  
Yoshihiro SONODA ◽  
Kiyoshi TAKIKAWA ◽  
Chiharu AOYAMA ◽  
Takashi SAITO
Keyword(s):  
Water Quality ◽  
Distribution Characteristics ◽  
Ariake Sea ◽  
Sea Area

Spatio-temporal Distribution Characteristics of Water Quality in Miju River and Erhai Lake

2019 ◽  
Vol 93 (sp1) ◽  
pp. 31
Author(s):  
Junlong Liu ◽  
Jijun Xu ◽  
Jin Chen ◽  
Xiaofeng Hong ◽  
Mingyuan Zhou
Keyword(s):  
Water Quality ◽  
Temporal Distribution ◽  
Erhai Lake ◽  
Distribution Characteristics ◽  
Spatio Temporal

Effect on Marine Ecological Environment of COD Emission of Wastewater

2013 ◽  
Vol 779-780 ◽  
pp. 1365-1368
Author(s):  
Ying Wang ◽  
Chun Ma ◽  
Guang Yu Zhang ◽  
Nan Xu
Keyword(s):  
Numerical Simulation ◽  
Water Quality ◽  
Marine Pollution ◽  
Water Quality Model ◽  
Ecological Environment ◽  
Quality Model ◽  
Simulation Research ◽  
Pollution Problem ◽  
Sea Area

The paper uses the research means of numerical simulation for marine pollution problem of the ocean dumps from offshore industries, which is concerned by the coastal countries; it adopts ECOM Water Quality Model. It has carried out the simulation research on those projects influence on the environment of sea area. By taking COD of wastewater as the research object, the paper confirmed the influence range of COD emission on marine ecological environment.

scholarly journals DENSITY STRATIFICATION AND WATER QUALITY IN A VERTICAL SECTION ALONG TAKESAKI-OHMUTA LINE OF ARIAKE SEA

2004 ◽  
Vol 48 ◽  
pp. 1273-1278
Author(s):  
Takahisa TOKUNAGA ◽  
Ken-ichi UZAKI ◽  
Nobuhiro MATSUNAGA ◽  
Toshimitsu KOMATSU
Keyword(s):  
Water Quality ◽  
Vertical Section ◽  
Density Stratification ◽  
Ariake Sea

scholarly journals Analysis of Distribution Characteristics of Flowrate and Water Quality in Tributary at Chungcheongnam-do

2011 ◽  
Vol 33 (10) ◽  
pp. 739-747 ◽  
Author(s):  
Sang-Hyun Park ◽  
Eun-Ho Moon ◽  
Jeong-Ho Choi ◽  
Byung-Wook Cho ◽  
Hong-Su Kim ◽  
...  
Keyword(s):  
Water Quality ◽  
Distribution Characteristics

scholarly journals Analysis of Water Quality Around the Coast Based on Physical Parameters (Temperature, Salinity and Metal Content) using Wireless Network System

2020 ◽  
pp. 295-300
Author(s):  
Nuril Akhyar ◽  
Kerista Sebayang ◽  
Kurnia Sembiring
Keyword(s):  
Heavy Metals ◽  
Water Quality ◽  
Real Time ◽  
Wireless Network ◽  
Water Solution ◽  
Automation System ◽  
Physical Parameters ◽  
Network System ◽  
Sensor Temperature ◽  
Sea Area

Testing and analyzing the water quality had been conducted by combining several characteristics of sensors (temperature, turbidity and heavy metals) integrated in the wireless network system to determine the quality comparator parameters of water worth drinking in coastal areas. Using sensors made of chitosan compounds to detect heavy metals contained in water. Testing was also done using the DS18B20 sensor (temperature) and TDS (salt levels) by operating a wireless network to transmit data in real time to the web through the GPRS network with the automation system. The sampling used purposive sampling by seafront distance, ± 1 km distance and ± 3 km distance. Testing of copper chips with the addition of Chitosan showed a more stable reading result than without using copper plates (read: pure PCB). At Chitosan biosensors, the addition of CMC shows more varied readings compared to using chitosan biosensors alone. The Ds18b20 Sensor was able to work at high temperatures, with stable value readings. From Sensor readings TDS (EC meter), it’s obtained that the higher the water solution, the greater the reading from the TDS sensor. It was shown on a chart that describing the closer to the sea area, the higher the level of the dissolved substances. The tool was accessed in real time through the Thing Speak platform in accordance with the specified account.

scholarly journals Characteristics and evaluations of heavy metals content in irrigation water sources of someone suburb farmlands of the lower reaches of Xijiang River in the early busy farming period

2020 ◽  
Author(s):  
Ren Jie ◽  
Liu Xiao-wen
Keyword(s):  
Heavy Metals ◽  
Water Quality ◽  
Irrigation Water ◽  
Mercury Content ◽  
Water Sources ◽  
Management Control ◽  
Distribution Characteristics ◽  
High Background ◽  
Xijiang River ◽  
Level I

Abstract The problems of heavy metals in irrigation water are related to the management-control of heavy metals risk of farmlands and the safe production of crops. There are various sources of irrigation water in the suburb farmlands of Xijiang River. We investigated the sources and distribution characteristics of heavy metals in the irrigation water sources in the riverside and inside-dyke farmlands of Xijiang River. According to correlation analysis, distribution characteristics analysis, single/comprehensive water-quality evaluations of eight heavy metal elements in different irrigation water sources, it was found that nearly 100% of heavy metals were detected in the irrigation water sources in this study. The box plot showed that the average level of cadmium was 0.02 μg·L−1 in this area, and the contents of other elements were mostly in the range of several to dozens of μg·L−1. Most heavy metals were in relatively low concentration level in the irrigation water sources, mercury content level (Quantitative Evaluation Index) was far greater than other elements, followed by arsenic. Arsenic and mercury problems have become more significant problems in local irrigation water sources. Surface water was more likely to be affected by river water and agricultural activities, while groundwater was more likely to be affected by natural causes. The comprehensive water quality evaluation ranged from level I to level III, but the single factor index evaluations of mercury in most water samples and arsenic in two groundwater samples were ‘Inferior’ level. It was suggested that the monitoring of mercury and arsenic (groundwater) in the irrigation water should be strengthened immediately in this area, the disposal measures of farmland water inflow and drainage should be increased if necessary, and reducing the influence of human factors on the natural weathering and leaching of heavy metals is an effective risk avoidance measure in agricultural production in high background regions.

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