CZ20793U1 - Plant intended for mechanical treatment and bio-aeration of sewage - Google Patents

Abstract

The invention relates to the field of wastewater treatment, water treatment plant is for cleaning wastewater in small sewage sources such as private homes, cottages, smaller hotels or factories. Mechanical and biological sewage treatment plant consists of a cylindrical sewage water placement tank (1) and by vertical wall is divided into first tank (2), with anaerobic filter (5) placed in it, activation tank (6) and precipitation tank (7). The first container (2), activation tank (6) and precipitation tank (7) are interconnected. To the first tank (2) top part is fixed sewage water supply pipe (3). At lower part of first tank (2) and activation tank (6) there are aeration means (4) In precipitation tank (7) there is placed round wall (12) with a tubular drain channel (9) on the outer shell with a transfusion edge (8). In addition, the tank (7) is a cone-shaped, widening toward upper part of the tank (1) and is with a pump (13). First tank (2) contains internal and external reinforcements, and the a

Description

Technical field

The technical solution relates to a sewage treatment plant intended for the treatment of waste water from small sources of pollution such as, for example, single-family houses, semi-detached houses, terraced houses, smaller hotels and business premises etc.

BACKGROUND OF THE INVENTION

For sewage treatment there are a number of treatment plants with disc reactors or spiral coiled tubing reactors, which are very widespread for small and medium cleaning operations.

The disadvantage of these treatment plants is the low oxygen consumption, as these treatment plants are not equipped for aeration by bubbling water. The oxygenation of water occurs by immersing the pre-activated parts of the reactors alternately in air and water. This is also related to the lack of efficiency of the suspension suspension culture, as the oxidation capacity of the rotating biocontractors does not match the required performance. Due to the relatively high environmental resistance, most of these plants have an unbalanced load on the powerplant, which is reflected in frequent failure rates and thus the plant is decommissioned. This is particularly true of treatment plants based on tubular biocontractors, where the resistance of the environment causes uneven stress on the shaft and thus on the drive unit.

Another series of wastewater treatment plants consists of a square tank in which a settling and activating part is arranged, the purified water being pumped from the settling to the activating part. This device is complex because it requires a lifting unit and a valve control system.

The essence of the technical solution

The aim of the technical solution is to create a sewage treatment plant, which will have low power requirements, will not contain breakdown parts, will have low sludge production and high efficiency of treatment. Such a solution, which at the same time removes the above mentioned drawbacks of existing treatment plants, is a device intended for mechanical and biological treatment of sewage waste water, which preferably consists of a cylindrical tank standing upright, divided by vertical walls into a primary tank with built-in anaerobic filter. tank and settling tank. Aeration elements are located in the lower part of the primary tank.

The primary tank is connected to the inlet pipe at the top. The sedimentation tank is conical in ascending direction in the tank direction and is provided with an overflow edge with an outlet pipe and a round wall in the upper part.

Wastewater flows through the inflow piping into the primary reservoir, where coarse suspended solids are sedimented and sludge is stabilized. Wastewater in the primary tank is intensively aerated with an aeration element. Pre-cleaned and aerated water is routed through the built-in anaerobic filter to remove coarse dirt and into the activation tank. Biological cleaning is then carried out in the activation tank. The activation tank, which is provided with a matala filter, is aerated and agitated by the aeration elements and the activation mixture flows through the matala filter and the interconnecting piping to the settling tank, where the biological sludge is separated from the purified water. Pure water flows under the circular wall and through the overflow edge into the drain pipe. The separated and thickened sludge is pumped from the bottom of the sedimentation tank by means of a pump, usually called a mammoth, into the activation tank, where it is sedimented and further stabilized. The aeration elements, the anaerobic filter and the pump are connected to the air distributor via piping. To reduce energy consumption, the air distributor is preferably connected to a magnetic diaphragm compressor.

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The device for mechanical and biological treatment of sewage effluent according to the present invention is easy to install, especially since it is made of polypropylene and is free of the inlet and waste pipe connections. Further advantages are the low weight of the product and the small number of mounting parts. The equipment is not demanding for operation and maintenance, it has low sludge production and high cleaning efficiency. The big advantage is the efficient use of the inner space of the cylindrical tank and the arrangement of the individual chambers to facilitate access during assembly and operation. An essential advantage is also the operation of the odorless plant using suitable cover and ventilation of the supply line.

BRIEF DESCRIPTION OF THE DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view of the device; FIG. 2 is a schematic view of the device;

Exemplary embodiment

The apparatus according to the invention shown in FIGS. 1 to 4 consists of a cylindrical tank 1 standing upright which is divided by vertical walls into a primary tank 2 comprising an anaerobic filter 5, an activation tank 6 and a settling tank 7. Primary tank 2 , the activation tank 6, and the settling tank 7 are interconnected. The primary tank 2 is connected in the upper part to the inlet pipe 3 and is provided for reinforcement with internal reinforcements 10 and external reinforcements 11. Aeration elements 4 are located in the lower part of the primary tank 2 and in the lower part of the activation tank 6.

The activation tank 6 is provided with a connecting pipe 14 with a matala filter.

The settling tank 7 has a conical shape ascending in the direction of the tank 1 and its upper part is fitted with a circular wall 12 in the central part and is provided with a spill edge 8 with a drain pipe 9 at the outer shell.

The waste water flows through the inlet pipe 3 into the primary tank 2, where the coarse and suspended solids are sedimented and the sludge is stabilized. The waste water is intensively aerated in the primary tank 2 by the aeration element 4. The pre-purified and aerated water is led through the built-in anaerobic filter 5, where it is free of residual coarse impurities, to the activation tank 6. In the activation tank 6 The activation tank 6 is aerated and mixed by the aeration elements 4 with high aeration capability. These aeration elements 4 act as a mixing system which causes the necessary turbulence of water in the biozone and supplies the necessary amount of oxygen to produce bacteria. As mentioned above, the activation tank 6 is further provided with a matala filter and an interconnecting line 14 and the activation mixture flows through the interconnecting line 14 with a matala filter to the settling tank 7, where the biological sludge is separated from the purified water. The clean water flows under the wall 12 and flows through the overflow edge 8 into the drain pipe 9. The separated biological and thickened sludge is pumped from the bottom of the secondary sedimentation tank 7 by means of a mammoth pump 13 via an air pressure-based collection system back to the activation tank 6 it is sedimented and further stabilized. The pump 13 is switched by an electrovalve, which is connected to an electric diaphragm compressor via an air distributor.

Industrial applicability

The technical solution is applicable in the field of construction and capital construction as a device for sewage treatment, especially from small sources of pollution such as family houses, smaller hotels, business premises etc.

Claims (3)

PROTECTION REQUIREMENTS Device for mechanical and biological treatment of sewage, characterized in that it consists of a tank (1), preferably of cylindrical shape, standing upright, which is divided by vertical walls into a primary tank (2) comprising an anaerobic filter 5 (5), the activation tank (6) and the settling tank (7), wherein the primary tank (2) comprising an anaerobic filter (5), the activation tank (6) and the settling tank (7) are successively interconnected, an inlet pipe (3) is connected to the primary tank (2), aeration elements (4) are located in the lower part of the primary tank (2) and the lower part of the activation tank (6), and the upper part of the settling tank (7) is in the central part it is provided with a circular wall (12) and in the place of the outer jacket it is further provided with an overflow edge (8) with a drain pipe (9). Device for mechanical and biological treatment of sewage according to claim 1, characterized in that the settling tank (7) is of conical shape, ascending in the direction of the tank (1), in that the primary tank (2) is provided with external stiffeners (11) and inner stiffeners (10), and in that the activation tank (6) is provided with a connecting pipe (14) with 15 matala filter. A plant for the mechanical and biological treatment of sewage effluents according to claims 1 a 2, characterized in that a pump (13) is arranged in the secondary settling tank (7). 2 drawings