RU2006102818A - DEVICE FOR CLEANING PROCESS WATER FROM WEIGHTED PARTICLES - Google Patents

Claims (3)

1. A device for purifying process water from suspended solids, including a frame with flat plates located at an angle of 50-70 ° to the horizontal plane, tanks for accumulating sludge and a mechanism for unloading sludge, characterized in that the frame is made with a cross section in cross-sectional shape flowing water channel, mainly trapezoidal in shape, and contains several sections separated by frames with side, upper, lower and central jumpers, the first frame with the flow of water is made with the upper edge inclined water flow at an angle of 40-45 ° and is made with holes in the side and central bridges in which steel strings are installed, and the second and subsequent frames are made with fingers on the upper and central bridges, and the lower and side bridges with grooves for installation plates, while the plates are made with a bend of 180 ° of the upper edge, which is able to cover the finger, and a bend of 30 ° of the lower edge, which freely pass into the groove of the lower or side jumper so that their planes are located along the water flow at an angle of 50-70 ° to horizontal pl sharpness. 2. The device according to claim 1, characterized in that the plates are made of metal with a negative hydrogen potential, for example, galvanized iron sheet, and the upper side of the plates is covered with a material having a positive hydrogen potential, for example, linoleum. 3. The device according to claim 1, characterized in that the total length of the plates along the water flow is related to the distance between the plates, the cross-sectional area of the channel, its dimensions, the flow rate of the process water, the dimensions of the minimum particles to be deposited, their density and the deposition properties in moving water as a function of

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, where L is the total length of the plates along the flow of water, m; υ _в - water velocity in the channel, m / s; υ _oc is the particle deposition rate in moving water, m / s; υ _к - final particle deposition rate in standing water, m / s; W is the distance between the plates, m; α ⁰ - the angle of inclination of the plates to the horizontal plane; Q is the consumption of process water, m ³ / s; S is the cross-sectional area of the water flow, m ² ; a, c - lower and upper base of the trapezoid, m; h - trapezoid height - water flow height, m; ρ _Т , ρ _в - density of solid particles and water, kg / m ³ ; g - gravitational acceleration, m / s ² ; R is the radius of the solid particle, m; d - the size of the "parachute" of a solid particle, due to the forces of adhesion and cohesion, depending on the size of the particle, m; lg is the decimal logarithm; and ₀ is a constant equal to 10 ^-4 m; a ₁ is a constant equal to 0.0202 · 10 ^-4 m; and ₂ is a constant equal to 7.645 · 10 ^-4 m; with _l - drag coefficient of the particle, equal to 0.3; c ₁ is a constant equal to 7.22; c ₂ is a constant equal to 0.618.