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Showing 1 to 20 of 22 for “"Wash Water"”.
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Changes in the quality of leafy vegetables and wash water in a system employing wash-water recycle
A modified leafy-vegetable immersion washer employing wash-water recycle was tested and evaluated as part of the processing operation at Exmore Foods, Exmore, Virginia. Water constituents and characteristics that were evaluated included BOD, COD, TSS, VSS, pH, color, conductivity, turbidity, and …
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A comparative study of conventional greens washers and a prototype system recycling wash water with a mathematical model of grit concentration in wash water
A prototype system with wash water recirculation was studied as a possible method of water conservation in the food processing industry. A conventional leafy-greens washer at the Exmore Foods Company, Incorporated, Exmore, Virginia, was compared with a prototype system. Spinach and turnip greens …
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Fate of azo dyes in sludges
… by the azo dye, 'Reactive Black 5,’ and Navy 106 wash water from a textile mill were studied in sludges under aerobic and anaerobic conditions. The potential of the dyes to leach from landfills was also investigated using Toxicity Characteristic Leaching Procedure (TCLP) analysis. The vinyl …
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Continuous column flotation of ultrafine coal using microbubbles
… height, bubble number concentration, make-up water addition and countercurrent wash water addition. The results show that i) fine air bubbles are Inherently better suited for floating small particles; ii) both ash and recovery rates Increase with Increasing feed rate, distance of the feed …
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Parametric study and simulation of microbubble column flotation
… frother dosage, feed rate, aeration rate, and wash water rate. The most important operating parameters in order of significant were found to be aeration rate, feed rate, frother dosage and wash water rate. The test data were found to fall along a single grade-recovery curve and just below the …
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Development of Methods to Aid in Flotation Circuit Evaluations and Drip Pan Design
… from the equipment manufacturer that the wash water distribution system should be changed to a drip pan and that the design of the slurry-air distributor from the mixing chamber should be altered. The experimental data showed that as froth depth, rotor speed, and wash water rate changed, …
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The determination of the effects of physical and chemical parameters on the column flotation cell, performance in the flotation of pyrite
… 5) The concentrate grades are improved by adding wash water. Chapter five then discusses the changes observed in the flotation column cell performance. Chapter six covers the design of a pilot plant flotation column rig, the results obtained on plant and the discussion of these results. It is …
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Simulation of computer control strategies for column flotation
… making individual step changes in tailings rate, wash water rate, feed rate, frother addition and air rates, while measuring the pulp level and air holdup responses. The dynamic behavior of the flotation column is also analyzed for the conditions at which the tests were performed. After converting …
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An In-Plant Evaluation of Froth Washing on Conventional Flotation Cells for Coal
… can be largely attributed to the use of froth washing, which minimizes the nonselective entrainment of ultrafine minerals matter into the froth product. Unfortunately, the practice of adding wash water in conventional flotation machines has been largely unsuccessful in industrial trials. In …
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Evaluation of an advanced fine coal cleaning circuit
… i.e., feed percent solids, feed rate and wash-water addition rate, were found to be of lesser importance. The experimental test results were found to be in good agreement with the theoretical predictions obtained using the model.
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Development of a Novel Air Sparging Device
… in selectivity is due to the employment of wash water, minimizing hydraulic entrainment of fine gangue particles, and the presence of quiescent operating conditions assisted by the use of various air sparging technologies. High performance air spargers increase the probability of collision …
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Optimum Processing of 1 mm by Zero Coal
… coarse as 0.5 mm or greater. The proper use of wash water in a flotation column then becomes the best mechanism for desliming of the high ash clays. This work quantifies the benefits of removing the high ash fines from the plant product and increasing overall plant yield by increasing the amount …
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Effect of Standard Post-harvest Interventions of Fresh Vegetables on Bacterial Community Dynamics, Pathogen Survival and Antibiotic Resistance
… especially in terms of disinfecting the wash water and preventing cross-contamination. Further, temperature and time of storage of vegetables are critical to prevent the growth of microorganisms. To provide a background inoculum representing potential pre-harvest carryover of ARB and …
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Experimental manure handling systems for reducing airborne contamination
… handling systems were designed and tested: a washing gutter system with pressurized heated wash water periodically directed across the dunging area, and a washed inclined conveyor belt used directly as a dunging area. Ammonia emissions were used as a measure of the air contamination …
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Polyvinyl alcohol size recovery and reuse via vacuum flash evaporation
… plant's Primary Oxygenation Treatment of Water operation, and being non-biodegradable, is a threat to the environment. When all-PVA/wax size is used in weaving, significant incentives exist to recover the synthetic polymer material from the desize wash water stream and reuse it. A new …
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An RBFN-based system for speaker-independent speech recognition
… sentence SAl ("she had your dark suit in greasy wash water all year") in TIMIT. For applications such as voice driven menu systems, the vocabulary words can be selected to be separable and distinct. A 95% recognition rate is achieved when the confusing words in the 11 words vocabulary are …
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A comprehensive study of the electrochemistry and floatability of pyrite in coal flotation
… systematically varied to study their effects on water recovery which was used as a measure of froth stability. It has been demonstrated that the upgrading of coal in a flotation column can be significantly improved when froth stability is properly controlled. In an attempt to enhance the …
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Effect of Standard Post-harvest Interventions on the Survival and Regrowth of Antibiotic-Resistant Bacteria on Fresh Produce
… bacteria on raw, peeled, carrots after washing with commonly used chemical sanitizers. Multi-drug resistant E. coli O157:H7 and Pseudomonas aeruginosa were inoculated into a compost slurry of composted manure from dairy cattle, with and without prior administration of antibiotics, and …
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Characterization of selected microbial species for bioflocculant producing potential and comparison with traditional flocculants in industrial waste water treatment
… colloids in both domestic and industrial wastewater treatments. The process is achieved with the help of various flocculants such as natural and synthetic inorganic or organic flocculants. Synthetic flocculants are conventionally used due to their high flocculating efficiency and availability. …
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Investigating the Effect of Heat Transfer Driving Force and Seed Loading on the Batch Eutectic Freeze Crystallization of a Dilute Brine
… solute from solvent. It is often used as a wastewater treatment process for industrial brines. In EFC, the solution is cooled to temperatures below the eutectic point of the brine, such that ice and salt simultaneously crystallize out of solution. Solid-solid-liquid separation of the resulting …
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