RU216398U1 - WASTE WATER TREATMENT DEVICE - Google Patents

Abstract

The utility model relates to devices for the collection and biological treatment of household wastewater and is intended for residential buildings in the absence of a central sewerage system. The device consists of a cover, a cylindrical body with stiffeners, a lower base, an upper base for the cover, the interior of which is divided by partitions into five series-connected chambers. The first receiving chamber with an aerator and an inlet pipe for supplying sewage is made with the possibility of overflowing into the second receiving chamber through a brush load separated by two partitions. The second receiving chamber serves as an additional reservoir for a larger volley discharge of sewage and contains a coarse filter with an air duct, a sludge sump with a brush load and an air duct. There are two airlifts for pumping water from the coarse filter to the sludge sump. The chamber of the aeration tank, into which water enters through the overflow window from the sludge sump, contains an aerator, a forced overflow pipe, which operates by means of a pump, and a pipe for the forced exit of purified water. The secondary clarifier, made with the possibility of overflowing water from the sludge sump, designed to separate purified water and sludge, contains a grease trap, a clean water outlet filter, a gravity pipe that leads to a purified water outlet pipe. There are additional holes on the coarse filter, thanks to which the water level in the second receiving chamber is controlled. EFFECT: improved operational characteristics of a wastewater treatment device. 3 w.p. f-ly, 3 ill.

Description

The utility model relates to devices for the collection and biological treatment of household wastewater and is intended for residential buildings in the absence of a central sewerage system.

A utility model is known from the prior art (RU 204973 U1, 01/27/2021) related to the field of biological treatment of domestic and industrial wastewater. The required technical result, which consists in increasing the efficiency of cleaning and expanding the arsenal of technical means used in the treatment of waste water, is achieved in a device containing a housing divided by partitions into five sedimentation tanks, while the first sedimentation tank is equipped with a pipe for supplying wastewater into it, made in its upper part, an aerator installed in its lower part and configured to be connected to a compressor, as well as an overflow to the second sump, made in the middle part of the partition between the first sump and the second sump and equipped with a hair trap, the third sump is equipped with an overflow from the second sump, made in the middle part of the partition between the second settling tank and the third settling tank, and the first drainage pump installed in its upper part, as well as the overflow into the fourth settling tank, made in the upper part of the partition between the third settling tank and the fourth settling tank and containing the first sorption filter In addition, the fifth settling tank is equipped with an overflow from the fourth settling tank, made in the upper part of the partition between the fourth and fifth settling tanks and containing a second sorption filter, as well as a second drainage pump installed in the lower part of the fifth settling tank and configured to output purified water through the outlet pipe, into in which an ultraviolet disinfectant is installed, and the device also contains an irrigation element, into which water is supplied from the third compartment by the first drainage pump, and a biological filter configured to irrigate the irrigation element and supply purified water from it to the settling tanks.

A useful model is also known (RU 133828 U1, 05/14/2013), containing separate functional containers connected in series - a primary clarifier, an aeration tank, a bioreactor with a flooded load and an aerating device, a secondary clarifier and an airlift for recycling activated sludge from the secondary clarifier to the primary one, characterized in that that the unit is additionally equipped with a storage tank and an airlift for pumping sludge from the primary clarifier to the storage tank connected to the primary clarifier, a mesh filter is installed between the primary clarifier and the aeration tank, a separate element of the microflora carrier in the bioreactor loading is made in the form of a mesh frame, the secondary clarifier is equipped with an air pump for removal of biofilm, and between the secondary clarifier and the outlet pipe there is a removable filter made of polymeric material, equipped with a toothed weir with a spillway tray, in addition, the outlet from each functional tank is located at a right angle to the inlet.

The closest to the claimed technical solution is a utility model (RU 182467 U1, 05/04/2018) related to devices for biological treatment of domestic wastewater. The device contains a housing, the interior of which is divided by partitions, forming sections, in which, respectively, there is a receiving chamber with a supply of waste water, an aeration tank, a secondary sump and an activated sludge stabilizer. The receiving chamber contains a coarse filter and a means of blowing it and a pump for pumping wastewater, and the receiving chamber and the aerotank are equipped with aerators, the air supply to which, as well as pumps installed in the receiving chamber, the aerotank and the secondary sump is carried out from one compressor. The body is cylindrical in shape and provided with stiffeners, and the secondary sump is separated from the aerotank chamber by an obliquely mounted partition to form a gap with the bottom of this chamber.

The disadvantage of these technical solutions is the increased risk of flooding the device, which leads to breakdown of electrical components.

The task to be solved by the claimed utility model is the creation of a device for the treatment of domestic wastewater.

This problem is solved due to the fact that the wastewater treatment device consists of a cover, a cylindrical body with stiffeners, a lower base, an upper base for the cover, the interior of which is divided by partitions into five series-connected chambers - the first receiving chamber with an aerator and an inlet pipe for supplying sewage, made with the possibility of overflowing into the second receiving chamber through a brush loading, separated by two partitions, the second receiving chamber, which serves as an additional reservoir for a large salvo wastewater discharge, containing a coarse filter with an air duct, a sludge sump with a brush loading and an air duct, at the same time, for pumping water from the coarse filter into the sludge sump, there are two airlifts, an aeration tank chamber, into which water enters through the overflow window from the sludge sump, containing an aerator, a forced overflow pipe that operates by means of a pump and a forced outlet pipe sludge, a secondary clarifier, which is designed to overflow water from a sludge sump, designed to separate purified water and sludge, containing a grease trap, a clean water outlet filter, a gravity pipe that leads to a purified water outlet pipe, while the coarse filter contains additional holes, thanks to which the water level in the second receiving chamber is controlled, located at a distance of 70 cm from the bottom of the coarse filter, the length of which is 70 cm, the length from the top of the coarse filter to the holes is 50 cm, the frequency of the holes is 15 × 7, the diameter of the holes 12 mm, as well as the design provides for the possibility of both gravity and forced exit of treated wastewater due to the accumulation of clean water with a pump, a forced overflow pipe and a pipe for the forced exit of treated water.

The technical result is to improve the performance of the wastewater treatment device.

The device is intended for immersion in the ground and is used to collect and treat wastewater from residential buildings in the absence of a central sewerage system.

The essence of the utility model is illustrated by drawings:

Fig. 1 - appearance of the device;

Fig. 2 - top view (arrows show the inflow and outflow of water);

Fig. 3 - internal device in isometry (arrows show the inflow and outflow of water).

The figures indicate: A - the first receiving chamber; B - the second receiving chamber; B - sludge sump; G - chamber of the aeration tank; D - secondary sump; 1 - body; 2 - stiffener; 3 - lower base; 4 - upper base; 5 - cover; 6 - partitions; 7 - inlet pipe; 8 - chamber A aerator; 9 - brush loading; 10 - coarse filter; 11 - additional holes; 12 - airlift; 13 - coarse filter air duct; 14 - brush loading of the sludge sump B; 15 - air duct of the sludge settler B; 16 - aerotank aerator G; 17 - grease trap; 18 - clean water outlet filter; 19 - gravity pipe; 20 - pipe of gravity outlet of treated water; 21 - compressor; 22 - pump; 23 - forced overflow pipe; 24 - pipe forced out of purified water; 25 - a box for a compressor; 26 - electric unit; 27 - air distributor; 28 - clean water storage tank.

The wastewater treatment device comprises a cylindrical body 1 with stiffeners 2, a lower base 3, an upper base 4 for a cover 5 and a cover 5. The device is made of monolithic propylene.

Inside the housing 1, five chambers are allocated with the help of partitions 6: A - the first receiving chamber; B - the second receiving chamber; B - sludge sump; G - chamber of the aeration tank; D - secondary sump. The chambers communicate with each other through overflow windows in partitions 6.

The first receiving chamber A is designed for crushing large fractions and initial wastewater treatment. Wastewater enters chamber A through the inlet pipe 7. This chamber A contains an aerator 8.

The second receiving chamber B serves as an additional reservoir for a larger burst of wastewater, which reduces the risk of flooding the entire device and, consequently, breakdown of electrical components.

Between chamber A and chamber B there is a brush load 9, separated by two partitions 6. The brush load 9 prevents large organic inclusions from entering the second receiving chamber B along the flow of wastewater.

The height of the lower partition through which the waste flows into the second receiving chamber B is 90 cm.

In chamber B there is a coarse filter 10 with a length of 190 cm. Additional holes 11 on the coarse filter 10 are located at a distance of 70 cm from the bottom of the coarse filter 10, the length of the holes 11 is 70 cm, the length from the top of the coarse filter 10 to the holes 11 is 50 cm, the frequency of holes 11 is 15×7, the diameter of holes 11 is 12 mm.

The difference between the partition 6, through which the waste water overflows, and additional holes 11 on the coarse filter 10 is 20 cm. And in the case of a large salvo discharge, this allows you to increase the intake of wastewater by about 50 liters. Due to this, the water level in the second receiving chamber B is controlled and the risks of flooding of the chambers of the device are reduced or eliminated. The fact that the second receiving chamber B serves as an additional reservoir for a larger burst of sewage discharge reduces the risks of flooding the entire device and, consequently, breakdown of electrical components. On the coarse filter 10 for its purge there is an air duct 13, which operates through an air distributor 27.

Two airlifts 12 are designed to pump water from the coarse filter 10 to the sludge sump B.

The sludge sump B contains a brush load 14, due to which there is an additional resistance of microorganisms to chemicals contained in detergents, increased resistance to leaching and survival of microorganisms in the winter period and the period of conservation of the device. Also, the sludge settler B contains an air duct 15 for purge, which operates through an air distributor 27.

Aerotank chamber G is designed for the final destruction of organic compounds by oxidation with activated sludge. Chamber G contains an aerator 16, a forced overflow pipe 23, which operates by means of a pump 22, and a forced outlet pipe for purified water 24.

Secondary clarifier D is designed to separate purified water and sludge. In the secondary sump D there is a grease trap 17, a clean water outlet filter 18, a gravity pipe 19, which leads to a purified water outlet pipe 20.

The device works as follows.

Waste water enters through the pipeline into the first receiving chamber A through the inlet pipe 7. In chamber A, the process of crushing large fractions and the initial treatment of wastewater takes place. Then the effluents evenly flow through the brush load 9 into the second receiving chamber B. The brush load 9 is located between two partitions 6 and prevents large organic inclusions from entering chamber B in the direction of wastewater flow.

Next, water enters the coarse filter 10 through additional holes 11 by gravity from the second receiving chamber B. The device operates without a float, the compressor 21 runs constantly, and as soon as the effluent enters the additional holes 11 on the coarse filter 10, the effluent is immediately pumped through airlifts 12 into the sludge sump B for brush loading 14. And in the case of a large salvo discharge, this allows you to increase the intake of effluents by about 50 liters. Due to this, the water level in the second receiving chamber B is controlled and the risks of flooding of the chambers of the device are reduced or eliminated. The compressor is located in a separate box 25, there is also an electrical unit 26.

In the sludge sump B, larger fractions settle to the bottom, and effluents with small particles flow through the overflow window into the aerotank chamber G. Here, the final destruction of organic compounds occurs by oxidation with activated sludge. Further, the mixture of pure water and activated sludge is sent to the secondary sump D.

In the secondary sedimentation tank D, the separation of purified water and sludge occurs: the heavier sludge settles to the bottom and through the hole in the lower part returns to the aerotank chamber G. The purified water remains on the surface and through the gravity pipe 19 enters the pipe of the purified water gravity outlet 20. The remaining biofilm on the surface of the secondary clarifier D is returned to the second receiving chamber B with the help of a grease trap 17.

The installation provides for the possibility of both gravity and forced exit of treated wastewater. The outlet of treated wastewater by gravity occurs without the help of pump 22, that is, when the device is operated by gravity, pump 22 is not installed. And the forced device provides for the operation of the pump 22. In this case, from the secondary sump D, water automatically flows through the forced overflow pipe 23 into the clean water storage tank 28, while the pipe of the gravity outlet of purified water 20 is blocked. In the clean water storage tank 28 there is a pump 22, where with its help, as water enters, it is ejected through the forced outlet pipe of purified water 24. This feature is an advantage, since due to certain circumstances, the wastewater treatment device must be converted into a device with forced outflow of purified water. In devices from other manufacturers, in order to do this, it is necessary to change the design of the device itself, which involves certain repair costs. The same device, due to its simplicity of changing work from a gravity-flow method to a forced one, allows saving the customer's budget.

This development is floatless, which improves the operation of the device as a whole, since the operation of the device is based on the fact that additional holes 11 on the coarse filter 10 control the water level in the second receiving chamber B, thereby the second receiving chamber B serves as an additional reservoir for greater volley discharge of wastewater, which reduces the risk of flooding the entire device and, consequently, breakdown of electrical components. And in the event of a float failure, the device stops working and flooding may occur.

Installation of the pipeline in this device can be carried out at a height of 1100-1800 mm from the bottom of the device. Due to certain circumstances, for technical reasons, the depth of the pipe underground cannot be controlled. In this device, the depth of the pipe may be lower than provided for by the standard for operating analogue devices. Cutting the pipeline below is possible due to the fact that this device does not have a float switch, like its analogues. And according to the regulations of devices with floats, the float is installed at a certain height. And the height of the pipe penetration depends on the height of the float, since the work of the float depends on the amount of incoming water. In the same device, the installation height of the pipe depends on the height of the holes on the coarse filter 10. The installation height of the pipe is 1100-1800 mm from the bottom, and the height of the holes from the bottom in the coarse filter 10 is 70 cm. Accordingly, when water enters through the inlet pipe 7 flows into the first receiving chamber A by gravity into the second receiving chamber B, and the water level in the two chambers A and B during normal salvo discharge is leveled to the level of the holes 11 on the coarse filter 10. If we take the difference in the height of the inlet pipe 7 and the height of the holes 11, then it turns out 40 cm. This area is needed so that in the event of a large salvo discharge there is a reserve for water so that the inlet pipe 7 does not flood. This distinctive feature makes it possible to reduce the cost and simplify the design and installation of the device.

Claims (4)

1. A device for wastewater treatment, consisting of a cover, a cylindrical body with stiffeners, a lower base, an upper base for the cover, the interior of which is divided by partitions into five series-connected chambers - the first receiving chamber with an aerator and an inlet pipe for supplying wastewater , made with the possibility of overflowing into the second receiving chamber through a brush loading, separated by two partitions, the second receiving chamber, which serves as an additional reservoir for a large salvo wastewater discharge, containing a coarse filter with an air duct, a sludge sump with a brush loading and an air duct, two airlifts made with the possibility of pumping water from the coarse filter into the sludge sump, the aeration tank chamber, configured to supply water from the sludge sump through the overflow window, containing an aerator, a forced overflow pipe, a clean water storage tank and a pipe for the forced exit of purified water, sump, which is made with the possibility of overflowing water from the sludge sump and designed to separate purified water and sludge, containing a grease trap, a clean water outlet filter, a gravity pipe that leads to a purified water outlet pipe, characterized in that the coarse filter is made with additional holes providing control of the water level in the second receiving chamber. 2. Wastewater treatment device according to claim 1, characterized in that the body is made of monolithic propylene. 3. A wastewater treatment device according to claim 1, characterized in that the additional holes on the coarse filter are at a distance of 70 cm from the bottom of the coarse filter, the length of the holes is 70 cm, the length from the top of the coarse filter to the holes is 50 cm, hole frequency 15×7, hole diameter 12 mm. 4. A device for wastewater treatment according to claim 1, characterized in that a pump is installed in the clean water storage tank.

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