Abstract: The present disclosure provides a water treatment module, a bioreactor comprising one or more of such modules and a receptive water treatment system. Also provided herein is a method making use of the above module, bioreactor and system. The water treatment module comprises (i) at least one elongated gas enclosure comprising a gas inlet and two vertical walls, at least one vertical wall comprising a water-impermeable and gas-permeable membrane having a water-facing side and a gas-facing side, the two vertical walls separating between water external to the enclosure and gas within the enclosure, the gas enclosure being in a rolled or folded configuration to thereby define a convoluted horizontal path and one or more water-treatment spaces formed between opposite water facing sides of the enclosure; and (ii) a diffuser arrangement comprising gas diffusers configured for introducing a stream of gas into the one or more water treatment spaces.

Abstract: The present disclosure provides a water treatment module, a bioreactor comprising one or more of such modules and a receptive water treatment system. Also provided herein is a method making use of the above module, bioreactor and system. The water treatment module comprises (i) at least one elongated gas enclosure comprising a gas inlet and two vertical walls, at least one vertical wall comprising a water-impermeable and gas-permeable membrane having a water-facing side and a gas-facing side, the two vertical walls separating between water external to the enclosure and gas within the enclosure, the gas enclosure being in a rolled or folded configuration to thereby define a convoluted horizontal path and one or more water-treatment spaces formed between opposite water facing sides of the enclosure; and (ii) a diffuser arrangement comprising gas diffusers configured for introducing a stream of gas into the one or more water treatment spaces.

Abstract: The present disclosure provides a water treatment module, a bioreactor comprising one or more of such modules and a receptive water treatment system. Also provided herein is a method making use of the above module, bioreactor and system. The water treatment module comprises (i) at least one elongated gas enclosure comprising a gas inlet and two vertical walls, at least one vertical wall comprising a water-impermeable and gas-permeable membrane having a water-facing side and a gas-facing side, the two vertical walls separating between water external to said enclosure and gas within said enclosure, the gas enclosure being in a rolled or folded configuration to thereby define a convoluted horizontal path and one or more water-treatment spaces formed between opposite water facing sides of the enclosure; and (ii) a diffuser arrangement comprising gas diffusers configured for introducing a stream of gas into the one or more water treatment spaces.

Abstract: Provided is a clogging resistant biofilm-based water treatment system. The system includes a membrane-enclosed water flow pathway including at least one water-impermeable, oxygen-permeable membrane wall portion extending along the pathway and at least another wall portion extending along at least part of the pathway. According to the subject matter provided, biofilm growth and consequent clogging generally takes place along the water-impermeable, oxygen-permeable membrane wall portion and biofilm growth and clogging does not take place along the another wall portion.

Abstract: The present disclosure provides a water treatment module, a bioreactor comprising one or more of such modules and a receptive water treatment system. Also provided herein is a method making use of the above module, bioreactor and system. The water treatment module comprises (i) at least one elongated gas enclosure comprising a gas inlet and two vertical walls, at least one vertical wall comprising a water-impermeable and gas-permeable membrane having a water-facing side and a gas-facing side, the two vertical walls separating between water external to said enclosure and gas within said enclosure, the gas enclosure being in a rolled or folded configuration to thereby define a convoluted horizontal path and one or more water-treatment spaces formed between opposite water facing sides of the enclosure; and (ii) a diffuser arrangement comprising gas diffusers configured for introducing a stream of gas into the one or more water treatment spaces.

Abstract: A digital printing machine for printing onto a medium, the digital printing machine comprising a chassis, a digital print means, an advancing mechanism for advancing the medium; the machine further comprising a widthwise cutter coupled to the chassis, wherein the digital print means and the widthwise cutter are controlled by a common computer controller, thereby ensuring that the cutting of the cutter is in registration with printing by said digital print means.

Abstract: A method of increasing a dynamic range of grey-scale printing by a first print head of a drop on demand inkjet printer, the first print head having a droplet orifice, the method comprising in addition to selectively supplying no signal for not ejecting a drop of ink, or a first signal for ejecting a first droplet size, further comprises optionally supplying a second signal for ejecting a second droplet size.

Abstract: A digital printing machine for printing onto a medium, the digital printing machine comprising a chassis, a digital print means, an advancing mechanism for advancing the medium; the machine further comprising a widthwise cutter coupled to the chassis, wherein the digital print means and the widthwise cutter are controlled by a common computer controller, thereby ensuring that the cutting of the cutter is in registration with printing by said digital print means.

Abstract: A method of increasing a dynamic range of grey-scale printing by a first print head of a drop on demand inkjet printer, the first print head having a droplet orifice, the method comprising in addition to selectively supplying no signal for not ejecting a drop of ink, or a first signal for ejecting a first droplet size, further comprises optionally supplying a second signal for ejecting a second droplet size.

Abstract: A digital printing machine for printing onto a medium, the digital printing machine comprising a chassis, a digital print means, an advancing mechanism for advancing the medium; the machine further comprising a widthwise cutter coupled to the chassis, wherein the digital print means and the widthwise cutter are controlled by a common computer controller, thereby ensuring that the cutting of the cutter is in registration with printing by said digital print means.

Abstract: An inkjet printer comprising a print table and a carriage that reciprocates across the print table, wherein the carriage comprises print-heads and further comprises a distance gauge mounted on the carriage for monitoring the distance between the carriage and a medium thereunder on the print table.

Abstract: Apparatus for optical inspection includes an illumination assembly, including multiple parallel rows of light sources for emitting light and illumination optics associated with each row for directing the light onto an object under inspection. The multiple parallel rows include at least a first row with first illumination optics including a first array of prisms that are configured to reflect the light emitted by the light sources in the first row, and at least a second row with second illumination optics including a second array of prisms that are configured to refract the light emitted by the light sources in the second row. An imaging assembly is configured to capture an image of the object under illumination by the multiple parallel rows of the light sources.

Abstract: Apparatus for optical inspection includes an illumination assembly, including multiple parallel rows of light sources for emitting light and illumination optics associated with each row for directing the light onto an object under inspection. The multiple parallel rows include at least a first row with first illumination optics including a first array of prisms that are configured to reflect the light emitted by the light sources in the first row, and at least a second row with second illumination optics including a second array of prisms that are configured to refract the light emitted by the light sources in the second row. An imaging assembly is configured to capture an image of the object under illumination by the multiple parallel rows of the light sources.