Food waste processing dairy industry

Rotary lobe slurry pumps are used with certain soft slurries with mild abrasion characteristics such as wastewater and sewage disposal, flotation slimes, digested scum, lime slurry in waste treatment plants. They are also used in food processing to move potato and starch pulp, mash, food paste, tomato paste, food wastes, and dairy waste and whey in milk processing. They are used in the paper industry to pump lime slurry and adhesives. They are used in the plastic recycling industry to pump plastic and Styrofoam cups. They are also used in the construction indnstiy for pumping bentonite siurries. clay slurries, and mud. 

RO, primarily used in the dairy industry, is expanding into other areas of food processing. RO can be used for a variety of operations, ranging from wastewater treatment and material recovery to clarification and concentration. Material recovery is advantageous for two reasons. By recovering valuable products, eg, proteins, from waste streams, profits can be increased while costs for waste disposal decreased. An excellent review of the different applications ofRO in food processing is available (9). 

Flotaiion is a powerful mineral beneficialion tool that has wide potential in effluent treatments in tbe following industries 32 oil industry, engineering industry wastes, dairy wastes, food industry, textile fiber wastes, cellulose fibers, rubber wastes, asbestos wastes, polymeric wastes, paper industry wastes, dyes, electroplating industry, vegetable wastes, poultry processing wastes... 

Proteinaceous material such as horn, feather, nail, hair, and cheese whey occur in nature as waste and can be converted, by proteases, into liquid concentrates or dry solids with high protein content and of nutritional value for food and feed. Thus, proteases provide potential application for the management of residues from various food processing industries such as poultry and cattle slaughterhouses and fishing and dairy industries [5, 6],... 

Reverse osmosis, although originally developed for water desalination ( ), has been applied to numerous pollution control and concentration problems, including industrial (2 and municipal O) wastewaters, pulp and paper waste streams ( ), food processing liquids ( 5), and dairy wastes ( ). 

Thiocyanate [SCN ], the anion of thiocyanic acid, is an important waste product from the chemical industry, it is present in various food items, it may be added to dairy milk to promote bacteriostatic processes, and it is synthesixed in the human liver as part of detoxification of cyanide. A special case in medicine has been generation of large amounts of thiocyanate leading to hypothyroidism after sodium nitroprusside infusion for hypertension (Nourok et at, 1964). After oral ingestion thiocyanate is readily absorbed. It is partly bound to albumin in blood, and mainly eliminated by excretion in urine. The half life of thiocyanate in humans is in the order of 1—2 weeks (Scherer, 2006), but varies between individuals. Thiocyanate may have a number of... 

PHAs can be produced from waste materials. Waste materials or wastewater may be used to produce PHAs with a reduction in cost. The production of PHB from the waste-activated sludge generated by a combined dairy and food processing industry wastewater treatment plant has been evaluated. Deproteinized jowar grain-based distillery spentwash yielded 42.3 wt% PHB, followed by filtered rice grain-based distillery spentwash, which yielded 40wt%PHB. 

The food industry also contributes significantly to the total volume of waste water (mainly from meat processing plants, sugar refineries, breweries and dairies). 

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