Abstract: A process is provided, comprising: (a) supplying ammonium-containing wastewater to a reactor containing granular sludge comprising granules having a core of anammox bacteria and an outer rim of ammonia oxidizing bacteria; (b) subjecting the wastewater to ammonium oxidation at a temperature between 5 to 25° C., a dissolved oxygen concentration between 0.4 mg/L to 4.0 mg/L, and a hydraulic retention time between 0.5 hours to 1.5 days, obtaining a nitrogen gaseous stream and a dispersion of granular and non-sludge in treated wastewater; and (c) separating the dispersion into a granular sludge stream and a stream of treated wastewater and non-granular sludge, and (d) recycling the granular sludge to the reactor while discharging the non-granular sludge, wherein the granular sludge has a reactor retention time at least ten times the hydraulic retention time, and wherein the retention time of non-granular sludge is no more than three times the hydraulic retention time.

Abstract: The invention relates to a process for biological removal of nitrogen from wastewater comprising: (a) providing a stream of wastewater comprising ammonium; (b) continuously supplying the stream of wastewater to a reactor containing granular sludge comprising granules having a core of anammox bacteria and an outer rim of ammonia oxidizing bacteria; (c) subjecting the wastewater in the reactor to ammonium oxidation under ammonium oxidizing conditions comprising a temperature in the range of from 5 to 25° C., a concentration of dissolved oxygen in the wastewater in the range of from 0.4 mg/L to 4.0 mg/L, and a hydraulic retention time of the wastewater in the reactor in the range of from 0.5 hours to 1.

Abstract: A package for containers such as bottles or cans, folded from sheet material, comprising a bottom panel, a first and second side panel connected thereto via diametrically opposed first fold lines and a first and second upper flap, connected to the respective side panels via a second and third fold line, respectively, wherein the first upper flap is located on the second upper flap and at least two openings are provided in the first upper flap through which fingers can be inserted for lifting said package and the second upper flap extends at least between said openings, while, at the location of the second and third fold line over at least one part of the said second and third fold line at least two layers of sheet material are provided, on and/or on both sides of said second and third fold line such that an upper longitudinal edge of at least one of the containers abuts, during use, against the innermost of said two layers of sheet material.

Abstract: A package for containers such as bottles or cans, in particular beverage containers, folded from a blank, provided with: a substantially closed bottom panel (2); two side panels (4), upstanding from the bottom panel, on opposite sides thereof; two upper flaps (6) folded from the side panels over containers arranged on the bottom panel; end wall flaps (10) extending on both sides of each side panel while confining the containers; and top flaps (12) extending from the upper edges of the end wall flaps facing away from the bottom panel, below or between the upper flaps (6); wherein at least said two flaps (12) and/or the upper flaps (6) are attached to each other.

Abstract: Apparatus for sorting metal bars by length, has a conveyor on which the bars are arranged longitudinally and conveys the bars both longitudinally and laterally. The conveyor has driven rollers contacted by the bars. A pick-up device picks up and conveys laterally, with respect to the conveyor, ends of bars having a predetermined length, thus preventing the longitudinal movement of such bars while bars not of the predetermined length are conveyed longitudinally at least partly past the pick-up device by the conveyor. To avoid increase capacity of the apparatus, and avoid wear, the rollers are obliquely positioned rollers whose axis of rotation is at a non-zero angle to the lateral direction of the conveyor, these rollers being, over at least part of their axial lengths, circular cylindrical in shape.