Abstract: The present invention provides comprising a carriage base, post(s) extending therefrom, a vertical slide for holding a powered sawhead on said post(s), and a wheel assembly(ies) on the carriage base for horizontal movement along guide rails.

Abstract: A process (10) for treating sulphate-containing water (28) includes feeding the water into a biological sulphate reduction stage (12) containing a complex carbon source (18). The water is subjected to biological sulphate reduction in the presence of an electron donor source, thereby to reduce sulphates in the water to sulphides and to produce alkalinity. The complex carbon source is contacted with water containing higher sulphide and alkalinity concentrations or levels than the sulphate-containing feed water, thereby converting complex carbon molecules to electron donors. The, or another, electron donor source is regularly added to the biological sulphate reduction stage (12).

Abstract: A process for treating sulphide-containing water includes maintaining a steep redox potential gradient in an interface zone of the sulphide-containing water. The water is exposed to an oxygen-containing environment, and the interface zone is located immediately below the surface of the water. Sulphide in the water is biologically oxidized, in the interface zone, to sulphur. The sulphur may be removed by settling, thereby achieving a final removal of sulphur compounds.

Abstract: The present invention provides comprising a carriage base, post(s) extending therefrom, a vertical slide for holding a powered sawhead on said post(s), and a wheel assembly(ies) on the carriage base for horizontal movement along guide rails.

Abstract: A kit for constructing a sawhead is disclosed. The kit comprises two or more plates adapted to be stacked upon and secured to one another by bolts to form a plate stack. The kit further comprises two or more elongate guide receivers. Each guide receiver has a longitudinal axis and an interior wall which defines a bore extending through said each guide receiver and through which bore said longitudinal axis extends. The interior wall has a cross-section which is substantially constant along the length of said each guide receiver. The guide receivers are adapted to be mounted to the plate stack by bolts at respective operative positions whereat the longitudinal axes are oriented parallel to one another and whereat the guide receivers are spaced from one another in a direction transverse to said axes. An improved band sawmill employing a sawhead constructed from the kit is also disclosed.

Abstract: An support structure is provided comprising: (a) a mast extending upwards; (b) a center bar extending horizontally from the mast, the center bar configured to extend along the bottom of the light vehicle; (c) a T bar extending from the center bar, along the bottom of the light vehicle to a T bar end at a lateral side of the light vehicle; and (d) a first truss member extending upwards on an incline from the first T bar end to a truss position on the mast. A counter load bearing mount may be attached to the center bar at the second end of the vehicle. Also taught is a load bearing apparatus comprising a support structure of the invention and at least one load bearing member selected from the group consisting of a dump box, 3-point hitch, hitch, dump bucket, log skidder, pallet forks, backhoe, agricultural plow, folding forks, tiller, scraper, disk harrow, disk harrow, hydraulic hammer, auger, grinder, and grapples.

Abstract: A process (10) for treating sulphate-containing water (28) includes feeding the water into a biological sulphate reduction stage (12) containing a complex carbon source (18). The water is subjected to biological sulphate reduction in the presence of an electron donor source, thereby to reduce sulphates in the water to sulphides and to produce alkalinity. The complex carbon source is contacted with water containing higher sulphide and alkalinity concentrations or levels than the sulphate-containing feed water, thereby converting complex carbon molecules to electron donors. The, or another, electron donor source is regularly added to the biological sulphate reduction stage (12).

Abstract: An support structure is provided comprising: (a) a mast extending upwards; (b) a center bar extending horizontally from the mast, the center bar configured to extend along the bottom of the light vehicle; (c) a T bar extending from the center bar, along the bottom of the light vehicle to a T bar end at a lateral side of the light vehicle; and (d) a first truss member extending upwards on an incline from the first T bar end to a truss position on the mast. A counter load bearing mount may be attached to the center bar at the second end of the vehicle. Also taught is a load bearing apparatus comprising a support structure of the invention and at least one load bearing member selected from the group consisting of a dump box, 3-point hitch, hitch, dump bucket, log skidder, pallet forks, backhoe, agricultural plow, folding forks, tiller, scraper, disk harrow, disk harrow, hydraulic hammer, auger, grinder, and grapples.

Abstract: A process for treating which contains carbonaceous solids, includes subjecting the water to hydrolysis in a biological hydrolysis reaction stage, in the presence of sulfate ions, thereby to produce treated water, a slurry component, and a sulfur-containing component. Treated water, the slurry component, and the sulfur-containing component are withdrawn from the reaction stage.

Abstract: A process for treating sulphate-containing waste water comprises introducing a feedstock comprising sulphate-containing waste water, into a pond. The sulphate-containing waste water is subjected to biological sulphate reduction in the pond, thereby to convert dissolved sulphate anions to dissolved sulphide anions. Treated waste water, containing the dissolved sulphide anions, is withdrawn from the pond.

Abstract: A filter for coalescing water and removing odor from air includes a water coalescing layer made of a synthetic fiber and an odor removal layer including an adsorbent material that operatively interfaces the coalescing layer. The coalescing and removal layers are shaped to receive and expel the air. Both layers can be supported by a frame and/or an outer support layer of polyester material.

Abstract: An ultra-efficient multilobal cross-sectioned fiber filter for chemical contaminant filtering applications is described. An absorptive chemically reactive reagent, preferably an acid or base and in liquid or an adsorptive chemically reactive reagent (an acid or base) in solid form, is disposed within longitudinal slots in each length of fiber. The reagent may be used alone or in conjunction with solid adsorptive particles which may also be utilized with the reagents in the longitudinal slots within the fibers. Reagents within the fibers remain exposed to a base-contaminated airstream passing through the filter. Base contaminants in the airstream, chemicals such as ammonium and amines (as well as particles), react with the acid reagent within the longitudinal slots of the fibers. As the contaminant and reagent react, the ammonium or amine becomes irreversibly absorbed (or adsorbed if reagent is a solid acid) to the liquid acid reagent and multilobal fiber.

Abstract: A process for treating sulphate- and metal-containing waste water, includes subjecting, in a reaction stage, the sulphate- and metal-containing waste water to biological sulphate reduction in which sulphates in the waste water are converted to sulphides, with metals present in the waste water precipitating out and treated waste water being obtained. The precipitated metals are withdrawn from the reaction stage, while treated waste water is withdrawn from the reaction stage. The treated waste water is subjected to polishing and/or to nutrient removal.

Abstract: A process for treating metal-containing acid water comprises adding an alkaline aqueous component to metal-containing acid water, thereby to raise the pH of the acid water and to cause metals therein to precipitate. The precipitated metals are separated from the water in a separation stage. The water is then passed to a biological alkalinity generating stage wherein the alkalinity of the water is increased biologically. The alkaline aqueous component, which is added to the metal-containing acid water, is withdrawn from the alkalinity generating stage. Treated water is also withdrawn from the alkalinity generating stage.

Abstract: A process for treating sulphate- and metal-containing waste water comprises adding a sulphide compound to the waste water. The sulphide compound reacts with a metal in the waste water to form a corresponding metal sulphide, which precipitates from the waste water. The precipitated metal sulphide is separated from the waste water, to obtain sulphate-containing waste water, which is subjected to biological sulphate reduction in which sulphates in the waste water are converted to sulphides.

Abstract: The data-logging apparatus for fitting to an animal comprises a sensor for sensing one or more conditions or activities of the animal, a processor for processing output signals from the sensor and to store data relating to one or more activities or conditions, and a timer to control the instant of time at which the processor commences and/or ceases to operate.

Abstract: A process for treating acid water process comprises raising the alkalinity of an aqueous component by means of algae, and separating algae from the aqueous component, thereby to obtain a purified alkaline aqueous component. The purified alkaline aqueous component is added to acid water, thereby raising the pH of the acid water.

Abstract: A method of producing a secondary metabolites comprises providing a porous substratum which has a biofilm of micro-organism attached thereto, and causing a nutrient solution to flow through the substratum, at a rate which is sufficiently low for a nutrient gradient to be established across the biofilm, such that the nutrient concentration at a high level along the gradient is sufficiently high to support primary growth of the micro-organism, and the nutrient concentration at low level along the gradient being sufficiently low to induce secondary growth of the micro-organism, thereby to produce secondary metabolite. The substrate is in the form of a hollow fibre membrane having a relatively thin, porous skin on the inside, and a relatively thick, finger-like, externally unskinned void structure radiating outwardly from the skin.

Abstract: An expanded resilient product and methods for making the same are disclosed. The product is characterized as a geometric solid of resilient material that has a plurality of slits formed therein. Each slit is defined by a first surface having a protruding portion and second surface having a recess portion corresponding to the protruding portion of the first surface which together form an interlocking fit between the two. Forces are applied to the product sufficient to dislodge a protruding portion of the first surface from the complementary recess portion of the second surface, thereby forming a plurality of gaps. The product is then permitted to relax, whereupon the protruding portions compressively contact the complementary recess portions of the second surface. But because of the interlocking fit, the protruding portions are prevented from re-engaging the recess portions and thereby maintain the expanded nature of the product.