organic sludge

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• Sludge — is the residual semi solid material left from industrial, water treatment, or wastewater treatment processes.When fresh sewage or wastewater is added to a settling tank, approximately 50% of the suspended solid matter will settle out in about an… …   Wikipedia

• Organic baby products — are made without pesticides, fertilizers, antibiotics, growth hormones, genetically modified organisms, additives, irradiation or sewage sludge. The manufacturer of such a product can only make these claims in marketing and advertising materials …   Wikipedia

• Organic fertilizer — Organic fertilizers are naturally occurring fertilizers (e.g. compost, manure). Naturally occurring organic fertilizers include manure, slurry, worm castings, peat, seaweed, humic acid, and guano. Sewage sludge use in organic agricultural… …   Wikipedia

• Organic fashion —    Clothing and accessories can be considered organic when they are made from fibers produced without the use of synthetic chemicals, such as conventional pesticides; without fertilizers made with synthetic ingredients or sewage sludge; and… …   Historical Dictionary of the Fashion Industry

• Organic movement — The organic movement broadly refers to the organizations and individuals involved worldwide in the promotion of organic farming, which is a more sustainable mode of agriculture. Its history goes back to the first half of the 20th century, when… …   Wikipedia

• organic farming — or organic gardening System of crop cultivation that uses biological methods of fertilization and pest control as substitutes for chemical fertilizers and pesticides, which are regarded by supporters of organic methods as harmful to health and… …   Universalium

• sludge digestion — the biochemical process by which organic matter in sludge is gasified, liquefied, mineralized, or converted into more stable organic matter …   Medical dictionary

• sludge — (sluj) A general term for the precipitated solid matter produced during water and sewage treatment; solid particles composed of organic matter and microorganisms that are involved in aerobic sewage treatment (activated sludge) …   Dictionary of microbiology

• Sewage sludge treatment — described the processes used to manage and dispose of the sludges produced during sewage treatment.ources of sludgeCoarse primary solids and secondary biosolids accumulated in a wastewater treatment process must be treated and disposed of in a… …   Wikipedia

• Activated sludge — is a process dealing with the treatment of sewage and industrial wastewaters.cite book | author=Beychok, Milton R. | title=Aqueous Wastes from Petroleum and Petrochemical Plants| edition=1st Edition | publisher=John Wiley Sons Ltd | year=1967 |… …   Wikipedia

• activated-sludge method — ▪ sewage treatment       sewage treatment (sewage system) process in which sludge, the accumulated, bacteria rich deposits of settling tanks and basins, is seeded into incoming waste water and the mixture agitated for several hours in the… …   Universalium