Qualitative composition and local pretreatment of dairy wastewaters

Abstract

On the territory of the Tyumen region there are a number of enterprises that discharge wastewater without pretreatment into water bodies and disturb their ecological condition. For example, one of the dairy industry plants produces 500 m3/day of industrial wastewater, which cannot be discharged even into the domestic sewage system due to its pollution density and aggressiveness. Thus, it is necessary to study wastewater quality and the mode of its inflow for local waste treatment plants’ designing. This article presents the results of the wastewater composition study on such indicators as pH, biochemical oxygen demand, chemical oxygen demand, suspended solids, fats, nitrogen, phosphate and other types of pollution. According to the obtained data, the conclusions were drawn about the wastewater composition inconstancy, associated with peculiarities of dairy production technology. In addition, the drains are characterized by a high variation of pH medium, which decreases sharply when the whey or acid solutions are discharged into the sewage production system after equipment washing. Based on these results, a scheme for organization of a dairy plant water disposal system is proposed, including local pretreatment of wastewater before its dumping into domestic sewage network.

Physicochemical technology of pretreatment of dairy waste water using natural waste

“…The possibility of practical application of rice husk has a number of areas -raw materials for the production of amorphous silicon dioxide with a low cost, silicon carbide, as well as the production of carbon-containing sorbents [10][11][12][13][14].…”

Microwave Radiation Influence on Dairy Waste Anaerobic Digestion in a Multi-Section Hybrid Anaerobic Reactor (M-SHAR)

“…Dairy industry waste is neutralized by means of anaerobic methods in multiple types of advanced digesters [27]. These include UASB (upflow anaerobic sludge blanket), ABR (anaerobic baffled reactor), AMBR (anaerobic migrating blanket reactor), ASBR (anaerobic sequencing batch reactor), AnMBR (anaerobic membrane bioreactor), EGSB (expanded granular sludge bed), M-SHFAR (multi-section horizontal flow reactor), and FAF-R (fluidized active filling reactor) [28].…”