Abstract: A sludge dehydration method includes a recovery process of recovering specific material as a dewatering aid from sludge generated in a sewage treatment process and a dewatering process of performing solid-liquid separation on sludge in which the dewatering aid recovered in the recovery process and dewatering target sludge are mixed.

Abstract: A recovery device is configured to recover specific material as a dewatering aid from sludge generated in a sewage treatment process. The recovery device includes: a grinder configured to fragment a solid in the sludge to obtain prepared sludge; a separator configured to separate hardly decomposable organic matter and easily decomposable organic matter from the prepared sludge; and an extractor configured to continuously extract hardly decomposable organic matter having specific properties as the dewatering aid from the hardly decomposable organic matter separated by the separator.

Abstract: An image reading apparatus, including: a guide rail configured to guide an image reading unit; and a fixing portion having configured to fix the guide rail with an adhesive.

Abstract: An image reading device includes a turning unit and a reading unit having a reader. The reading unit includes a reading glass, and the reader reads, through the reading glass, an image on a sheet placed on the reading glass. The turning unit turns with respect to the reading unit and includes a pressing plate, a communication unit detachably mounted within the turning unit, and an attachment part. The pressing plate presses a sheet on the reading glass against the reading glass when the turning unit is at a position closing the reading glass. The communication unit receives data from outside the image reading device. The attachment part can be attached the communication unit. At least part of the pressing plate is removed from a main unit of the turning unit to externally expose the attachment part.

Abstract: A sludge dehydration method includes a recovery process of recovering specific material as a dewatering aid from sludge generated in a sewage treatment process and a dewatering process of performing solid-liquid separation on sludge in which the dewatering aid recovered in the recovery process and dewatering target sludge are mixed.

Abstract: A sludge dehydration method includes a recovery process of recovering specific material as a dewatering aid from sludge generated in a sewage treatment process and a dewatering process of performing solid-liquid separation on sludge in which the dewatering aid recovered in the recovery process and dewatering target sludge are mixed.

Abstract: An image reading device includes a turning unit and a reading unit having a reader. The reading unit includes a reading glass, and the reader reads, through the reading glass, an image on a sheet placed on the reading glass. The turning unit turns with respect to the reading unit and includes a pressing plate, a communication unit detachably mounted within the turning unit, and an attachment part. The pressing plate presses a sheet on the reading glass against the reading glass when the turning unit is at a position closing the reading glass. The communication unit receives data from outside the image reading device. The attachment part can be attached the communication unit. At least part of the pressing plate is removed from a main unit of the turning unit to externally expose the attachment part.

Abstract: An image reading apparatus includes a scanner unit including a first image reading portion configured to read an image of a first surface of a document through a first flow-reading glass, an ADF including a second image reading portion disposed on an opposite side of the first image reading portion across a sheet conveyance path and reading an image of a second surface of the document through a second flow-reading glass. The image reading apparatus further includes a gap forming member disposed on either one of the second flow-reading glass and a moving guide unit and abutting with another one of them. The moving guide unit is provided in the scanner unit and is urged by springs to be movable toward the second flow-reading glass.

Abstract: An image reading apparatus includes a scanner unit including a first image reading portion configured to read an image of a first surface of a document through a first flow-reading glass, an ADF including a second image reading portion disposed on an opposite side of the first image reading portion across a sheet conveyance path and reading an image of a second surface of the document through a second flow-reading glass. The image reading apparatus further includes a gap forming member disposed on either one of the second flow-reading glass and a moving guide unit and abutting with another one of them. The moving guide unit is provided in the scanner unit and is urged by springs to be movable toward the second flow-reading glass.

Abstract: A recovery device is configured to recover specific material as a dewatering aid from sludge generated in a sewage treatment process. The recovery device includes: a grinder configured to fragment a solid in the sludge to obtain prepared sludge; a separator configured to separate hardly decomposable organic matter and easily decomposable organic matter from the prepared sludge; and an extractor configured to continuously extract hardly decomposable organic matter having specific properties as the dewatering aid from the hardly decomposable organic matter separated by the separator.

Abstract: A sludge dehydration method includes a recovery process of recovering specific material as a dewatering aid from sludge generated in a sewage treatment process and a dewatering process of performing solid-liquid separation on sludge in which the dewatering aid recovered in the recovery process and dewatering target sludge are mixed.

Abstract: An image forming apparatus, including: an apparatus main body including an image forming portion configured to form an image on a sheet; an image reading apparatus provided on an upper portion of the apparatus main body; a document feeding apparatus located on the image reading apparatus and configured to feed a document to the image reading apparatus; and a support portion configured to support the document feeding apparatus on the apparatus main body without the image reading apparatus in a state in which the document feeding apparatus is openable and closable with respect to the image reading apparatus.

Abstract: An image reading apparatus, including: a guide rail configured to guide an image reading unit; and a fixing portion having configured to fix the guide rail with an adhesive.

Abstract: A concentrator-integrated screw press includes: a continuous concentrator configured to continuously concentrate sludge and discharge the sludge as concentrated sludge, and including a discharge amount equalization unit configured to equalize an amount of concentrated sludge to be discharged per unit time; a positive displacement pump installed consecutively to the concentrator, and configured to continuously transport the concentrated sludge discharged from the concentrator; and a screw press installed consecutively to a discharge side of the positive displacement pump, and configured to compress and dewater the concentrated sludge.

Abstract: An image forming apparatus, including: an apparatus main body including an image forming portion configured to form an image on a sheet; an image reading apparatus provided on an upper portion of the apparatus main body; a document feeding apparatus located on the image reading apparatus and configured to feed a document to the image reading apparatus; and a support portion configured to support the document feeding apparatus on the apparatus main body without the image reading apparatus in a state in which the document feeding apparatus is openable and closable with respect to the image reading apparatus.

Abstract: A concentrator-integrated screw press includes: a continuous concentrator configured to continuously concentrate sludge and discharge the sludge as concentrated sludge, and including a discharge amount equalization unit configured to equalize an amount of concentrated sludge to be discharged per unit time; a positive displacement pump installed consecutively to the concentrator, and configured to continuously transport the concentrated sludge discharged from the concentrator; and a screw press installed consecutively to a discharge side of the positive displacement pump, and configured to compress and dewater the concentrated sludge.

Abstract: A differential rate rotary thickener; a power detector which is disposed in a sludge receiver tank for thickened sludge thickened in the differential rate rotary thickener; a discriminator which receives an electric signal for a thickened sludge concentration detected by the power detector and which calculates and discriminate the data; a first controller which receives an instruction signal being a discriminated result in the discriminator and which operates an outer cylinder driving machine and a screw driving machine; a ratio setter which receives a discriminated signal of the discriminator and which increases or decreases a chemical feed rate of flocculant stepwise; and a second controller which receives an instruction signal from the ratio setter and which operates a flocculant-feeding pump are provided. Thickening of sludge is performed by controlling the chemical feed rate, a rotational speed of a screw, and a rotational speed of an outer cylinder screen.

Abstract: The invention provides a liquid consumption apparatus including a liquid consumption unit, a counting unit that counts the amount of the liquid consumed by the liquid consumption unit as a liquid consumption amount, a reception unit that receives a detection signal indicating that the amount of the liquid contained in the liquid container is not more than a predetermined amount; a detection-time liquid amount memory unit that memorizes the liquid consumption amount at the time of reception of the detection signal as a detection-time liquid consumption amount, and a judgment unit that judges that the liquid container is empty when the amount of difference between the liquid consumption amount and the detection-time liquid consumption amount is not more than a specified amount.

Abstract: A differential rate rotary thickener; a power detector which is disposed in a sludge receiver tank for thickened sludge thickened in the differential rate rotary thickener; a discriminator which receives an electric signal for a thickened sludge concentration (X) detected by the power detector and which calculates and discriminate the data; a first controller which receives an instruction signal being a discriminated result in the discriminator and which operates an outer cylinder driving machine and a screw driving machine; a ratio setter which receives a discriminated signal of the discriminator and which increases or decreases a chemical feed rate (?) of flocculant stepwise; and a second controller which receives an instruction signal from the ratio setter and which operates a flocculant-feeding pump are provided. Thickening of sludge is performed by controlling the chemical feed rate (?), a rotational speed (S) of a screw, and a rotational speed (C) of an outer cylinder screen.

Abstract: [Solving Means] A differential rate rotary thickener; a power detector which is disposed in a sludge receiver tank for thickened sludge thickened in the differential rate rotary thickener; a discriminator which receives an electric signal for a thickened sludge concentration detected by the power detector and which calculates and discriminate the data; a first controller which receives an instruction signal being a discriminated result in the discriminator and which operates an outer cylinder driving machine and a screw driving machine; a ratio setter which receives a discriminated signal of the discriminator and which increases or decreases a chemical feed rate of flocculant stepwise; and a second controller which receives an instruction signal from the ratio setter and which operates a flocculant-feeding pump are provided. Thickening of sludge is performed by controlling the chemical feed rate, a rotational speed of a screw, and a rotational speed of an outer cylinder screen.