Wet sludge

Carbide lime is a waste lime hydrate by-product from the generation of acetylene from calcium carbide and may occur as a wet sludge or dry powder of widely varying purity and particle size. It is gray and has the pungent odor associated with acetylene (see Hydrocarbons, acetylene). 

Sludge Disposal. Land disposal of wet sludges can be accomplished ia a number of ways Lagooniag or the application of liquid sludge to land by tmck or spray system, or by pipeline to a remote agricultural or lagoon site. 

What would be the ultimate disposal of dry material collected by an ESP at a cement plant kiln outlet What would be the ultimate disposal of wet sludge from a scrubber on a cement plant kiln outlet ... 

For PM applications, wet scrubbers generate waste in the form of a slurry or wet sludge. This creates the need for both wastewater treatment and solid waste disposal. Initially, the slurry is treated to separate the solid waste from the water. The treated water can then be reused or discharged. Once the water is removed, the remaining waste will be in the form of a solid or sludge. 

A variation of this process uses an emulsified bitumen product that is miscible with a wet sludge. In this process, the mixing can be performed at any convenient temperature below the boiling point of the mixture. The overall mass must still be heated and dried before it is suitable for disposal. Ratios of emulsions to waste of 1 1 to 1 1.5 are necessary for adequate incorporation. 

Maximum volume reduction. Reduces volume and weight of wet sludge cake by approximately 95 percent, thereby reducing disposal requirements. 

A heated, unstirred water-wet sludge of this analogue of picric acid exploded violently, apparently owing to local overheating in the containing flask. 

For PM applications, wet scrubbers generate waste in the form of a slurry or wet sludge. This creates the need for both wastewater treatment and solid waste disposal. Initially,... 

Flats plant. All of the methods studied eliminated the potential for free liquids and excessive amounts of particulate. The methods included (1) addition of a Portland cement/diatomite mixture, (2) solidification using microwave technology, (3) cementation with Portland cement, and (4) polyethylene solidification. All costs were based on a production rate of 178,840 lb of wet sludge per year. The cost reduction (dollars per pound of sludge) relative to Portland cement/diatomite was 11.68 (1993 dollars) for microwave solidification, 10.45 (1993 dollars) for polyethylene solidification, and 8.07 (1993 dollars) for cementation. Table 1 gives a breakdown of these costs (D1353911, p. 8). 

This technology is not cost competitive with lower-temperature thermal desorption units when the organics have low boiling points (less than 400°F). In addition, if the material handling system is designed for dewatered sludges, it will not efficiently accommodate wet sludges. 

In contrast to dead-end microfiltration, which could also be used to remove solids from spent electrolytes producing (after addition of a solvent and at elevated temperatures) an ionic liquid as residue, the residue in the extractive regeneration is wet sludge only. 

E In a waste treatment plant, wet sludge containing 50 wt% moisture is fed into a rotary,... 

The oil-wet sludge is removed from the dehydrated oil solution in the flask by settling and decanting or centrifuging. It is washed with solvent to free it of oil, dried, and weighed. The wash solution is combined with the dehydrated oil solution which contains other solvent and the separate entrainer, if one was used. Solvent is stripped from the solution by distillation to determine the available oil of the crude which remains. 

A thickener in a waste disposal unit of a plant removes water from wet sewage sludge as shown in Fig. E2.1. How many kilograms of water leave the thickener per 100 kg of wet sludge that enter the thickener The process is in the steady state. 

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