Feiyiya Inclined Plate Clarifiers Use Gravity & Innovative Engineering
A gravity clarifier is the most economical method of removing solids from liquids, using natural gravity as the source of energy and it is free. A clarifier simply provides a non-turbulent zone where heavier than liquid solids, suspended by turbulence, are given sufficient time to settle to a quiescent surface. The HEI inclined plate clarifiers are compact units with multiple layers of settling area utilizing less than 25% of the floor space required by conventional clarifiers.
Principle of Clarifiers
A particle carried forward by the velocity of the liquid flow must settle at a rate that allows it to reach the bottom before passing through the clarifer. Thus, particles beginning at a point [a" must traverse some route lying between ab and ab` in order to avoid being carried over the outlet.
If V is the horizontal velocity of the liquid, S the solids particle vertical settling velocity, L the length of the settling device, and D its depth, then particles entering at point A will settle to the bottom of the device only if V does not exceed: S(L/D)Since Vmax / S = L / D then, Vmax = S (L / D)
Inclined plate clarifier, Lanmei inclined plate clarifier, Inclined Tube Settler,High-Efficiency Inclined Tube Wuxi Feiyiya Environmental Protection Technology Co., Ltd. , https://www.fefinegrille.com
As a professional enterprise engaged in a series of automobile clutch production in China, the company always persists in widening the range of products. The products variety includes a wide range covering over 20 brands of vehicles, ranging from the imported and China-made to a series of heavy, light and car automobile clutch driven assembly and clutch assembly, we produce clutch discs with diameters ranging from 150 to 430 mm in more than 1, 000 specifications. Our company thoroughly insists that the customers are served with"Quality as base, survival by credit, cordial service attitude". We are willing to have a better cooperation with our new and existing partners together create even greater successes now and in the future.
As a professional enterprise engaged in a series of automobile clutch production in China, the company always persists in widening the range of products. The products variety includes a wide range covering over 20 brands of vehicles including Toyota, Mazda, Nissan, Mercedes Benz, Mitsubishi and etc. Ranging from the imported and China-made to a series of heavy, light and car automobile clutch driven assembly and clutch assembly, we produce clutch discs with diameters ranging from 150 to 430 mm in more than 1, 000 specifications. Our company thoroughly insists that the customers are served with"Quality as base, survival by credit, cordial service attitude". We are willing to have a better cooperation with our new and existing partners together create even greater successes now and in the future.
Advantages/FeaturesÂ
1). Pollution -free ( no heavy metals, asbestos and other harmful substances ).Â
2). Competitive price and quality assurance: 30, 000 kms-50, 000kms guarenteeÂ
3). Longer service with superior stopping power.Â
4). Less dust and does not hurt the surface of the coupling.Â
5). Resistant to fade, rapid recovery.Â
6). ISO9001:2008Â cetificated.Â
7). Strictly detection and inspection system.Â
8). Two kinds of material that asbestos and non asbestos are for your choice.Â
Packaging & DeliveryÂ
Packaging Details: Card board package or according to buyer's requestÂ
Payment details: T/TÂ
Delivery Detail: 35 days after received the deposit
Therefore, the velocity at which a horizontal clarifying device may be operated successfully is directly proportional to its length and inversely proportional to its depth.
This analysis applies to multiple horizontal plate units also. The spacing between plates is usually a few inches as opposed to a depth of several feet in a horizontal tank; therefore, [settling-out" times are dramatically reduced. The flow must be non-turbulent to prevent settled solids from being re-entrained within the moving liquid. Small plate spacing and a large surface area permits laminar flow at higher velocities than large horizontal tanks would allow.
Horizontal clarifying devices become self-flushing if they are inclined at an angle which exceeds the angle of repose of the settled solids. In such cases, flow enters the lower end of the device where settling particles move to the floor eventually sliding back out the entrance. Clear effluent leaves the top of the device.
However, when the device is inclined, the furthest settling particles no longer fall through distance D but some longer distance D`. This new longer settling distance D` is related to D by the relation: D = D` cos Ø.
Theta [Ø" is the angle, the device is inclined to the horizontal plane. Thus settling distance is increased by the factor: 1/cos Ø In the case where Ø = 60º, 1/cos Ø = 2.
The maximum settling distance is twice the distance between the plates. It is apparent then that the lower the angle of inclination, the smaller the settling distance. However, the angle of inclination must exceed the angle of repose of the solids to be separated. The previous equation may be modified to express the cosine of an inclined plate clarifying system as:
Vmax = L / (D / cosØ) (s) = L·cosØ / D (s)
Inclined Plate Clarifiers
A reduction of the required floor space is acquired by diminishing the separation between the horizontal plates to a few inches and stacking the settling surfaces. Inclining the plates to provide self flushing, 45º for heavy particles and 60º for light particles, reduces the available horizontal projected area (effective settling area) by a factor equivalent to the cosine of the angle. The surface area diagram (below) graphically compares the floor space requirements of an HEI inclined plate clarifier with the equivalent horizontal projected settling area.
Settling Rate
The settling rate for a specific solids should be determined by standard laboratory tests. Light particles, such as metal hydroxides, usually require a design parameter of 0.25 – 0.50 gallons per minute per square foot of horizontal projected area. These low density solids require the inclined plates to be set at a 60º angle to induce the particles to slide down the plate. Heavier particles (such as sand that easily flow) will readily slide from plates set at a 45º angle.
Maximum flow rate of an inclined plate clarifier is based on the flow rate per unit of a horizontally projected surface area. Retention time in the clarifier is not a design criteria. However, attaining optimum performance requires the prudent design to recognize several additional, very important factors.