Chemistry of Natural Waters and Water Pollution

Laundry wastewater characteristics and their relationship with river water quality as an indicator of water pollution. Case study: Code Watershed, Yogyakarta

E3S Web of Conferences ◽

10.1051/e3sconf/202132502011 ◽

2021 ◽

Vol 325 ◽

pp. 02011

Author(s):

Galih Dwi Jayanto ◽

Margaretha Widyastuti ◽

M. Pramono Hadi

Keyword(s):

Water Pollution ◽

Water Quality ◽

River Water ◽

Urban Areas ◽

Natural Waters ◽

Class Ii ◽

River Water Quality ◽

Rural And Urban Areas ◽

Rural And Urban ◽

Administrative Units

Laundry services are rapidly becoming ubiquitous in rural and urban areas, generating high domestic waste volumes. Their growth has raised concerns about the quality of natural waters, particularly the rivers into which most laundry businesses discharge their wastewater. The research set out to study laundry wastewater characteristics and their relationship with the river water quality as water pollution indicators in Code Watershed (Indonesia). It lies in three administrative units where many human activities take place in the watershed’s upper to the lower reaches. BOD and COD of 25 sampled laundry businesses were analyzed descriptively and compared to the laundry wastewater standards stipulated in Regulation No. 7 of 2016 and the class II water quality standards issued in Governor Regulation No. 20 of 2008. The results showed that the BOD of four laundry businesses and the COD of 18 laundry businesses exceeded the predetermined standards. Overall, rivers in Code Watershed meet the class II river water criteria for BOD at three of the seven sampling points and COD at all points.

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Features of the bioecological state of water bodies in the Leningrad region and de-eutrophication measures

E3S Web of Conferences ◽

10.1051/e3sconf/202127304016 ◽

2021 ◽

Vol 273 ◽

pp. 04016

Author(s):

Viktor Sboichakov ◽

Dmitriy Kulev ◽

Olga Reshetnikova ◽

Tatiana Osipova ◽

Ludmila Kovaleva

Keyword(s):

Water Pollution ◽

Natural Waters ◽

Water Bodies ◽

Biogenic Elements ◽

Leningrad Region ◽

Biological Productivity ◽

Factors Influencing ◽

State Of Water ◽

Toxicological Research ◽

Regulatory Measures

Natural waters are polluted by sewage, industrial and transport waste leads to a decrease the oxygen content in the water and the disappearance of valuable fish species. As a result, the eutrophy of the reservoir develops - the saturation of reservoirs with biogenic elements, accompanied by an increase in the biological productivity of water basins. The purpose of the work was to study the bioecological state of water basins in the Luga district of the Leningrad region, the prospects for de-eutrophication. The monitoring data of water bodies were studied and factors influencing the bioecological state of water bodies were considered. Physicochemical, sanitary and microbiological, parasitological and toxicological research methods were used in the work. Objects of research: the rivers Obla and Svinechnaya; lakes Toloni and Omchino. All this is a very unfavorable factor and indicates strong water pollution. To combat the eutrophication of water bodies, preventive and regulatory measures are used. A promising prevention of eutrophication is a biotechnological method, including the cultivation of plants in the coastal zone, breeding of herbivorous fish, the use of the method of algolization (introduction of a chlorella suspension).

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