摘要:
A waste water treating apparatus comprises an inner chamber and an outer chamber disposed around the inner chamber extending to a considerable depth. The inner and outer chamber communicate with each other at the bottom portion, whereby the inner and outer chambers form a downward and upward flow chamber, respectively, for circulating waste water. The waste water that flows from the downward flow chamber to the upward flow chamber is circulated to the downward flow chamber by means of a pump. An oxygen containing gas is simultaneously supplied into the ciculating waste water. An apparatus for monitoring the concentration of oxygen or carbon dioxide in an exhaust gas is provided at an outlet of the upward flow chamber. The oxygen containing gas being supplied is controlled to a predetermined optimum flow rate in response to the monitored concentration.
摘要:
A waste water treating apparatus includes a circulation type aeration tank having a downward flow chamber and an upward flow chamber extending in the depth direction and communicating with each other at the upper and lower ends thereof. An oxygen containing gas is supplied to the downward flow chamber and waste water and return sludge are supplied to a given position or elevation of the upward flow chamber to be mixed with a mixed liquor flowing through the upward flow chamber, whereby a reduction zone with a low concentration of dissolved oxygen is formed at the upper portion of the upward flow chamber. Denitrification takes place in the above described reduction zone.
摘要:
A method for melting and treating waste to be treated such as waste water treatment sludge and incinerated ash of garbage involves mixing the waste to be treated with an auxiliary fuel in powder, granular or solid form or in the form of mixture thereof which has its own calorie value. Powder coal, coal, coke, waste plastic material, saw-dust, waste paper, carbonized material and used tires can be used as an auxiliary fuel. In addition to the auxiliary fuel, an additive is admixed for adjusting the composition of the waste to have treated so as to be a specific composition ratio.
摘要:
A sludge treating apparatus comprises a centrifugal condensing machine for forcedly condensing a raw sludge produced by a waste water treating apparatus. The raw sludge condensed to approximately 94 to 90% in terms of the percentage of moisture content by means of the centrifugal condensing machine is introduced into an anaerobic digestion tank of a deep well type, where the raw sludge undergoes an anaerobic digestion, and a digested sludge obtained from the anaerobic digestion tank is then dewatered by means of a dewatering apparatus such as a belt press, whereupon the dewatered sludge is applied to a post-treatment apparatus. In execution of the anaerobic digestion process, the reactions corresponding to an acid fermentation stage and acid regression stage may be carried out in advance in separate tanks and the reaction corresponding to an alkaline fermentation stage may be mainly performed in an anaerobic digestion tank.
摘要:
A chain wear indicator measures the wear in a chain to determine if the chain needs to be replaced. The chain wear indicator includes a body portion with a first end, a second end and first and second sides extending between the first and second ends. The first side of the body portion measures a first predetermined amount of wear in the chain, while the second side of the body portion determines if a new chain is defective. Alternatively, the second side of the body portion measures a second predetermined amount of wear in the chain. Each side of the body portion has three protrusions. The first protrusion extends from the first end of the body portion and has a first roller engaging surface facing in a first direction. The second protrusion extends from the middle of the body portion and has a second roller engaging surface facing in a second direction which is substantially opposite the first direction. The first and second roller engaging surfaces are configured and spaced apart from each other by a distance corresponding a predetermined number of the chain links to place the chain under tension therebetween. The third protrusion extends from the second end of the body portion and has a third roller engaging surface facing in substantially the second direction. The third roller engaging surface is configured and spaced from the second roller engaging surface by a distance corresponding a predetermined number of the chain links plus a pre-selected amount of wear per link to determine if the chain is worn out and needs to be replaced.
摘要:
A bicycle chainwheel plate is formed to reduce the weight of a chainwheel crank and to keep its stiffness at a high level. The chainwheel plate is coupled between a crank arm and at least one sprocket. In one embodiment, the crank arm is detachable from the chainwheel plate, while in the second embodiment, the crank arm is integrally formed with the chainwheel plate as a one-piece, unitary member. The crank arm is designed to accommodate a pedal at its free end and is centrally attached to the chainwheel plate at the other end. In the first embodiment, the chainwheel plate comprises a crank attachment portion having a centrally located crank attachment hole in which a crank arm can be fixed in a non-rotatable fashion, four connecting arm portions radially extending in four directions from the crank attachment portion, and chainwheel fixing portions bifurcating and extending outward from the tips of the arm portions. The outer sprocket is shaped as a ring and is fixedly coupled to the chainwheel fixing portions.
摘要:
An image signal interpolating circuit including a plurality of integrated circuits 31, each integrated circuit 31 including therein memories 40 to 43 for holding respective pixel data of 2.times.2 dots, operational or computational elements 44 to 47 for calculating interpolated values on the basis of respective pixel data of 2.times.2 dots, and an input/output control section 36. The plurality of integrated circuits are arrayed to calculate interpolated value between respective pixels of a pixel block of 2n.times.2m dots.
摘要:
A method and apparatus that predicts electromagnetic emissions and susceptibility attributes of an electric device. A simulation is conducted which utilizes a series of mathematical calculations to predict performance of four facets of electromagnetic interference (EMI): conducted emissions; conducted susceptibility; radiated emissions; and radiated susceptibility. The method and apparatus provides for the analytical evaluation of electromagnetic interference of electrical devices prior to testing and actual measuring of fields emitted by circuits, thereby providing a system for EMI control methods, EMI test costs, and device redesign and retest.
摘要:
A protective plate for attachment to a bicycle frame for guiding a chain includes a support body having a first side for facing laterally toward the bicycle frame, a second side for facing laterally away from the bicycle frame, a lower portion, and an upper portion. The lower portion of the first side of the support body is structured to align with a bottom bracket of the bicycle, and a frame attachment member is disposed on the upper portion of the support body for clamping the upper portion of the support body to the bicycle frame. A chain guiding abutment may be formed on the upper portion of the second side of the support body for guiding the chain as the chain shifts from a larger chainring to a smaller chainring.