Sludge (possibly from Middle English slutch 'mud, mire', or some dialect related to slush) [1] is a semi-solid slurry that can be produced from a range of industrial processes, from water treatment, wastewater treatment or on-site sanitation systems.

Pair up words that look different but sound alike. The meaning of SLUDGE is mud, mire; especially : a muddy deposit (as on a riverbed) : ooze. How to use sludge in a sentence.

2025年3月27日 · Two basic goals of treating sludge before final disposal are to reduce its volume and to stabilize the organic materials. Stabilized sludge does not have an offensive odour and can be handled without causing a nuisance or health hazard. Smaller sludge volume reduces the costs of pumping and storage. Treatment methods

2023年12月4日 · What Is Sewage Sludge and What Can Be Done with It? In this document, "sewage sludge" will refer to wastewater treatment solids generally, and "biosolids" will refer specifically to material that is suitable for land application.

Sewage sludge is the residual, semi-solid material that is produced as a by-product during sewage treatment of industrial or municipal wastewater. The term "septage" also refers to sludge from simple wastewater treatment but is connected …

2025年3月26日 · Biosolids, or sewage sludge, are the solid byproducts of the wastewater treatment process. Rich in nutrients, they can be used as fertilizer on agricultural fields or compost on lawns. But the process for producing these materials can vary greatly, and some unwanted things can end up in those biosolids.

Sludge exists in a solid or semi-solid state and is a by-product of wastewater treatment, sewage treatment, water treatment, or on-site sanitation systems. Its production is either primary or secondary, meaning there is primary sludge and secondary sludge.