SU1017363A1 - Water purifying apparatus - Google Patents

Description

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The invention relates to devices for the purification of natural waters and the purification of sewage liquids and can be used primarily in the technology of purifying household water. A device for purifying water is known, comprising a housing within which a mixer is coaxially disposed, a cylindrical flocculation chamber and an ejector system, a precipitator and means for regulating the amount of recirculated ejection sediment made in the form of a septum having openings and horizontally installed in the flocculation chamber. Each of the holes is provided with a shutter, installed 1 with the possibility of changing the cross-sectional area of the hole 1.

The closest to the proposed technical essence and the achieved result is a water purification device comprising a housing within which is coaxially (there is a mixer, a flotation chamber and a system for recirculating sludge, and a precipitator communicating with the cavity inside the housing through the bypass hole 23.

The known device is characterized by a low degree of water purification.

The performance of these devices is largely determined by the location of the bypass hole with respect to the bottom edge of the floc chamber.

In the known device, the bypass hole is located below the lower edge of the flocculation chamber, and therefore the concentration of the suspension in the layer of suspended sediment significantly decreases in the downward-upward direction which degrades the quality of cleaning.

The purpose of the invention is to increase the degree of water purification.

The goal is achieved. In a water purification device comprising a housing, a mixer, a flocking chamber, a sludge recirculation system, a compactor, an overflow opening is provided above the lower edge of the flooding chamber by an amount of 0, + - 0.6 of the height of the flocculation chamber.

The drawing shows the device, the cross-section.

The device includes a housing 1, inside of which the horse is located coaxially in the side wall of the housing. The holes 7 are provided with protective visors 8. The water clarified in the device is collected by the annular groove 9 and discharged through the pipeline 10. In the upper part of the precipitator 6 there is a perforated pipe 11, and in the lower pipeline to discharge the sediment 12. The source water supply pipe 5 is connected to the pipeline 13 designed to empty the device

The device works in the following way.

The source water with the necessary reagents introduced into it is fed to the lower part of the device via pipeline 5. Due to the ejektz system formed by the socket L and pipeline 5. a part of the already formed sediment enters mixer 2 and further into chamber 3 along with the source water.

The flocculation process proceeds very intensively due to the substantial influence on it of the already formed sediment.

In view of the high concentration of the flakes, the last, the exit from chamber 3, is quite well deposited. At the same time, a part of the sediment is ejected and, together with the initial water, enters the mixer 2, and a part of the sediment in the space between the housing 1 and the flocculation chamber 3 forms a suspended sediment zone.

The water in which the smallest flakes remain, the passage through the zone of suspended sediment formed by well-formed, large flakes, is purified.

The clarified water is collected by an annular chute 9 and is led through line 10 to filter.

The upper boundary of the suspended sediment layer is maintained almost at the same level by continuously passing part of the suspended sediment through holes 7 into the compactor 6. The amount of the bypass sedimentary mixer 2 and the cylindrical flocculation chamber 3. The mixer 2 is equipped with a socket k at the bottom, which forms with the source pipe water 5 ejection system. - To one of the side walls of the hull from the outside adjacent precipitator 6, communicating with the inner, body portion by means of Item 7 located is controlled by the degree of opening of the valves on the pipeline 11, i.e. the amount of clarified water discharged from the precipitator 6. The compacted sediment from the sedimentation tray of the strands 6 is discharged through the pipeline. 2. If it is necessary to empty the device, it can be carried out with open valves on pipelines 12 and 13 and closed valve on pipe 5. The proposed device is reliable in operation and provides a high degree of water purification. The last circumstance is due to the fact that the cleaning process is carried out in two stages in the first stage - the adherence of the smallest suspended particles to the previously formed flaps occurs during the downward movement of the mass of flakes that stand in the dormant, thereby ensuring a high degree of precipitation. At the second stage, the fitment of the smallest flakes (not settled at the first stage) to the large flakes, forming a layer of suspended sediment, in an upward flow of water. The peculiarity of the formed layer of suspended sediment in comparison with the known construction of this type is the practical constancy of the concentrations of well-formed flakes in the height of the layer, which ensures a high degree of water purification. At the same time, the studies performed show that the water treatment stem largely depends on the height of the layer of suspended sediment. In the device, which is determined by the distance from the lower edge of the flocculation chamber to the holes in the wall of the housing. In this regard, it is advisable that the holes in the side wall be positioned higher than "1" of the size of the flocking chamber by 0.4-0.6 heights of the flocking chamber. Reducing the above ratio leads to a decrease in the depth of the layer of suspended sediment, and therefore to a deterioration in the quality of cleaning. Thus, if the openings are located above the lower edge of the flocculation chamber by a value of 0.3 the height of the flocculation chamber, the content B of the suspended substances at the exit of the device, other conditions being equal, the method increases to mg / l. On the contrary, with an increase in the above ratio, the height of the layer of suspended sediment increases, however, the reliability of the device decreases due to the possibility of entry. Not part of the flakes with the flow of water into the annular chute when the water supply mode changes.

Claims (1)

A WATER PURIFICATION DEVICE, including a housing inside which a mixer is coaxially located, a flocculation chamber and a sludge recirculation system, a precipitation compactor communicating with the cavity inside the housing through a bypass opening “characterized in that, in order to increase the degree of water purification by passing into the precipitator the least concentrated part of the suspended sediment, the bypass hole is made above the lower edge of the flocculation chamber by a value of 0.4-0.6 height of the flocculation chamber. _Q ®