RU209709U1 - Biotank with built-in sump - Google Patents

Abstract

The utility model relates to wastewater treatment and removal of water from biotanks and can be used in the treatment of both domestic and industrial wastewater containing suspended particles and dissolved chemical elements. The treated water enters the body of the biotank, contacts with the biomass fixed on the submersible load, is purified to the calculated values and enters the part of the biotank, in which ropes of hygroscopic material are fixed along the entire height of the structure. Due to the fact that the ropes are made of hygroscopic material, the effect of capillary rise of the liquid occurs. At the top point, the ropes are fixed in the gutter. The purified water is collected by the catchment gutters and discharged through the catchment collector outside the structure. To regulate the flow of waste water, the water collection troughs move vertically relative to the water level in the biotank, changing the length of the ropes above the water level. This leads to a change in the duration of the movement of capillary moisture to the gutter and, accordingly, regulates the flow of water. Excess biomass settles in the sediment part of the biotank and is subsequently removed. The proposed design makes it possible to drain treated water from a structure from a higher point without the use of pumps, which leads to a reduction in earthworks during the construction of the structure.

Description

The utility model relates to the technique of removing water from sedimentation tanks and treating wastewater and can be used in the treatment of both domestic and industrial wastewater. The essence of the utility model is to increase the surface that will be used to fix and increase the concentration of biomass necessary for water treatment, as well as to reduce the volume of the sedimentary part of biotanks with a built-in sump and drain the treated water from the facility from a higher elevation.

Known "Device for removing water from sedimentation tanks" [EN 2320392 C2, B01D 21/24, publ. 03/27/2008 Bull. No. 9]. The device includes a water inlet with a float placed in the sump, equipped with vertical rigidly mounted racks. Ropes are fixed along the racks, the lower part of which is located in the water intake. The ropes are made of hygroscopic material, increasing in length in the direction from the periphery to the center of the float. Water removal occurs due to the evaporation of water from the ropes by natural air currents and solar exposure. The technical result consists in removing water from the sump with a minimum environmental load on mechanical impurities and chemical elements, simplifying the design and reducing the cost of maintaining the water level in the sump.

The disadvantage of this device is the low productivity of purified water consumption due to the need for evaporation of moisture under the action of natural air currents and solar radiation. The proposed design does not allow adjusting the flow of purified water and depends on weather conditions, which change both during the change of seasons of the year and during the day.

The closest in technical essence to the claimed device, the prototype is a "Device for removing water from sedimentation tanks" [RU 2705975 C1, B01D 21/24, publ. 11/12/2019 Bull. No. 32]. The device for removing water from settling tanks includes a water inlet placed in the settling tank in the form of a float, equipped with vertical, rigidly mounted posts, along which ropes are fixed, made of hygroscopic material, the lower part of which is placed in the water inlet. The ropes are made increasing in length in the direction from the center of the float to the periphery. In the upper part of the racks above the ropes, a spherical lens is fixed with the sphere up.

The disadvantage of this device is that it does not allow you to adjust the flow of purified water and remains dependent (to a lesser extent compared to the above device, published 27.03.2008 Bull. No. 9, RU 2320392) on weather conditions.

The objective of the utility model is to reduce earthworks during the construction of a biotank, as well as to discharge treated wastewater from higher elevations than wastewater that enters without the use of mechanical stimulators (pumps).

The problem is solved by the fact that in the biotank device with a built-in sump, containing a body, an aeration system with an air duct located in the lower part of the biotank, a sludge removal pipeline located in the bottom part of the built-in sump, a settling part with ropes of hygroscopic material fixed at two points - in the lower settling part and at the top, in the catchment gutters for the removal of treated waste water, located above the level of the water table. Drainage chutes are made with the possibility of movement relative to the level of the water table.

In the proposed biotank, purified water flows through ropes of hygroscopic material by capillary rise of the liquid into the catchment gutters, which allows the purified water to be discharged from a higher elevation, and, as a result, to reduce earthworks. To regulate the flow of treated water, the catchment gutters must move in height relative to the level of the water table.

In FIG. 1 shows the proposed device, where:

1. Trench for supplying treated waste water

2. Biotank body with built-in sump

3. Aeration system

4. Hygroscopic ropes

5. Gutter

6. Collector

7. Sludge removal pipeline

8. Duct

9. Sedimentary part of the biotank

10. Sewage mirror

Thus, in the “Biotenk with a built-in sump” device, which contains a wastewater treatment zone and a settling zone, above which water collection chutes are adjustable in height, the hygroscopic material ropes are directed from the bottom not into a float with a spherical lens fixed above the ropes with a sphere upwards, as in prototype, but in height-adjustable gutters. In this case, the purified water rises to a higher level due to the capillary effect, and it is collected in the drainage gutters. The possibility of vertical movement along the height of the catchment gutters ensures the regulation of the flow of purified water discharged from the structure into the catchment collector. The catchment collector can be located above the wastewater surface at the entrance to the biotank with a built-in sump, which makes it possible to reduce the amount of excavation of downstream structures or to pump treated water from higher elevations.

Biotank works as follows (Fig. 1). Wastewater enters the body of the biotank 2 through the treated water supply chute 1. The water, moving along the biotank, comes into contact with the biomass and is purified. To maintain the life of the biomass in the biotank, compressed air is supplied through the air duct 9 through the aeration system 3. Having reduced the concentration of contaminants to the calculated values, water enters the part of the biotank, in which ropes made of hygroscopic material 4 are fixed along the entire height. which additionally removes impurities from the water that were not caught earlier. At the top point, the ropes are fixed in the gutter 5. Due to the fact that the ropes are made of hygroscopic material, the effect of capillary rise of the liquid occurs. Thus, the purified water is collected by the gutters and discharged through the collector 6 outside the structure. Due to the fact that the flow of wastewater entering the treatment varies during the day, it becomes necessary to regulate the flow of water leaving the facility. Therefore, to control the flow, the water collection chutes are made with the ability to move relative to the level of the waste water surface 10. With an increase in the flow rate of water supplied for treatment, the chutes are able to lower and approach the waste water surface 10, thereby reducing the length of the rope of hygroscopic material 4 between the waste water surface water and catchment chute, and, as a result, the duration of the movement of treated water to the catchment chute 5. With a decrease in the influx of wastewater for cleaning, the catchment chutes have the ability to rise above the level of the wastewater mirror 10. In this case, the length of the rope above the water level increases, which leads to an increase in the duration of the movement of purified water to the gutter 5. This is how the flow of purified water is regulated depending on the flow rate of the water supplied for purification.

The proposed design makes it possible to drain treated water from a structure from a higher point without the use of pumps, which leads to a reduction in earthworks during the construction of the structure.

Claims (2)

1. A biotank with a built-in settling tank, containing a body, an aeration system with an air duct located in the lower part of the biotank, a sludge removal pipeline located in the bottom part of the built-in settling tank, a settling part with hygroscopic material ropes fixed at two points - in the lower settling part and at the top, in the catchment gutters for the removal of treated wastewater, located above the level of the water table. 2. The device according to claim. 1, characterized in that the gutters are made with the possibility of movement relative to the level of the water table.

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