Accession Number : ADP006903

Title :   Removal Work of Organic Deposit By Oozer Pump Dredge,

Corporate Author : JAPAN DREDGING AND RECLAMATION ENGINEERING ASSOCIATION TOKYO

Personal Author(s) : Fujii, K. ; Otsu, F.

Report Date : APR 1992

Pagination or Media Count : 26

Abstract : Through drains from homes and factories, rivers that run adjacent to large cities are becoming more contaminated, worsening the living environment of residents along with development of the cities. The increase in contamination load is caused by the solution and elution of eutrophic salts from the contaminated bottom deposits. The quality of water in rivers and lakes, which had been progressively deteriorating along with economic development, is today being gradually improved through elimination of contamination by strengthening the regulations for drainage standards and development of sewage works, etc. However, of the rivers that are designated First Class, environmental standards are met in only about 75 percent of the cases; the remaining cases are unsatisfactory. Dredging is the purification method of the bottom deposit most often selected. This paper outlines the work of dredging, dehydration, and treatment of surplus water of the subsoil by means of the transportable modular Oozer pump dredge.

Descriptors :   *CONTAMINATION, *DEPOSITS, *DREDGING, *URBAN AREAS, *WATER, *ORGANIC MATERIALS, *REMOVAL, BOTTOM, DEHYDRATION, DRAINAGE, ECONOMICS, ELIMINATION, ELUTION, ENVIRONMENTS, INDUSTRIAL PLANTS, LAKES, PUMPS, PURIFICATION, QUALITY, REGULATIONS, RIVERS, SALTS, SEWAGE, STANDARDS, TRANSPORTABLE, WORK, SYMPOSIA, POLLUTANTS.

Subject Categories : Hydrology, Limnology and Potamology
      Water Pollution and Control

Distribution Statement : APPROVED FOR PUBLIC RELEASE