- jäsningsrest — sludge (English)
- 1) A soft, soupy, or muddy bottom deposit, such as found on tideland or in a stream bed.
2) A semifluid, slushy, murky mass of sediment resulting from treatment of water, sewage, or industrial and mining wastes, and often appearing as local bottom deposits in polluted bodies of water.
- The waste liquid from domestic sewage, industrial sites or from agricultural processes. Effluents are harmful when they enter the environment, especially in freshwater, because of their polluting chemical composition.
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