sludge thickener

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environmental works — ▪ civil engineering Introduction infrastructure that provides cities and towns with water supply, waste disposal, and pollution control services. They include extensive networks of reservoirs, pipelines, treatment systems, pumping stations … Universalium
Gunge — as it is known in the British Isles, or slime as it is known in America and other parts of the world is a thick, gooey, runny substance similar in consistency to paint. It has been a feature on many children s programmes for many years around the … Wikipedia

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