RU2769382C1 - Bioflotochambine for wastewater treatment - Google Patents

Abstract

FIELD: wastewater treatment.

SUBSTANCE: invention is intended for wastewater treatment from various contaminants. The bioflotocombin for wastewater treatment includes a body, inside of which there are partitions, and on the outside, there are nozzles, respectively, for supplying the working fluid, waste water, a cover, a foam chute with a nozzle for removing the foam product, a pipe for discharging purified water, a connecting pipe for draining sludge into the screw thickener, having an external drive. The branch pipe of purified water is connected in series by a pipeline with a columned bioreactor with a lower conical part and with a load placed inside. The outlet pipe of the froth trough is connected to a float settler with a conical bottom with a vibrator placed under it, connected by a pipeline to the inlet pipe of the screw thickener.

EFFECT: improving the efficiency of wastewater treatment.

5 cl, 1 dwg

Description

Technical field

The present invention in the form of a bioflotation combine for wastewater treatment is designed to treat wastewater from various contaminants.

State of the art

Various flotation combines for wastewater treatment are known, in which the processes of water purification and thickening of sediments are simultaneously carried out (Patent of the Russian Federation for utility model No. 170182. Flotation combine for wastewater treatment, pr. .WITH.

Patent of the Russian Federation No. 2658411. Flotation combine for wastewater treatment, project 04/11/2017, reg. 06/21/2018. Author and applicant Ksenofontov B.S.).

At the same time, the most common and effective method of biological wastewater treatment is practically not carried out in these flotation combines, which leads to an insufficiently high degree of wastewater treatment.

The closest technical solution to the proposed invention is a technical solution in the form of a bioflotation combine for wastewater treatment, which includes a body, inside which there are partitions, and on the outside there are nozzles, respectively, for supplying the working fluid, waste water, a cover, a foam trough with a nozzle for removing the foam product, purified water outlet pipe, foam product discharged through the pipe further along the pipeline to the screw thickener having an external drive (RF patent for utility model No. 192973. Bioflotocombin for wastewater treatment, pr. applicant Ksenofontov B.S. - prototype). A significant disadvantage of the known device is the low degree of wastewater treatment.

Disclosure of invention

The objective of the invention is to develop a new design bioflotocombin, providing a high degree of purification of waste water from pollution.

The technical result is to increase the efficiency of wastewater treatment with the achievement of water quality, which allows the discharge of purified water into reservoirs of fishery importance.

The set task and the specified technical result are achieved by the fact that the bioflotocombin for wastewater treatment includes a housing, inside which there are partitions, and on the outside there are nozzles, respectively, for supplying the working fluid, wastewater, a cover, a foam trough with a nozzle for removing the foam product, a nozzle for removing purified water, foam product, a connecting pipe for removing sediment to a screw thickener having an external drive, characterized in that the pipe of purified water is connected in series by a pipeline with a column bioreactor with a lower conical part with a taper angle of 20 to 60 ° with a load placed inside, made of dispersed material with a particle size of 1 to 5 mm and located both in a stationary or fluidized state, and the outlet pipe of the froth trough is connected to the floatation tank with a conical bottom with a vibrator placed under it, connected by a pipeline to the inlet pipe of the screw thickener, and the lower horse The flotation separator has a taper angle from 30 to 75°.

The drawing shows a diagram of a bioflotocombine.

Implementation of the invention

The proposed bioflotocombine includes a housing 1, inside of which there are partitions 5, and on the outside there are nozzles, respectively, for supplying working fluid 2, waste water 3, cover 4, foam chute 6 with a nozzle for removing foam product 25, a pipe and a pipeline for removing purified water 7, connected with a column bioreactor 16, having a lower conical part with a taper angle α in the range from 20 to 60°, and at the same time, the outlet pipe 15 of which is connected to the intermediate tank 12, having an outlet pipe 14 on the outside in the lower part, and a pump 13 inside, connected by a pipeline 10 with a tie-in outlet from the compressor 9 with an aeration chamber 11 and at the same time having a diffuser 8 in the upper part for venting gases. At the same time, a dispersed packing with a particle size of 1 to 5 mm is placed inside the column bioreactor, which is in a stationary or fluidized state. At the same time, the branch pipe 26 of the foam chute 6 is connected by a pipeline 27 to the branch pipe 28 of the float settler 24 with a conical bottom with a taper angle β equal to from 30 to 75 ° with a vibrator 30 placed under it, connected by a pipeline 23 to the inlet pipe of the screw thickener 18, having a drive 17, and on the outer side of the housing 1 in its lower part there is a connecting pipe 25 for draining sediment into the screw thickener 18, which has an outlet pipe 19 for draining the liquid phase into the collector 20 and a outlet pipe 21 of the concentrate into the collector 22, and at the same time in the upper part of the flotation settler 24 is installed diffuser 29 of clarified water. The principle of operation of the proposed bioflotocombin is as follows. Waste water through pipe 3, and the working fluid through pipe 2 enter the body 1, where the combined flotation process of preliminary water purification takes place, including the formation of microflotation complexes and their subsequent coalescence sequentially on partitions 5. of the recirculating flow with the removal of a part of the stream to be cleaned from the intermediate tank 12 using a submersible pump 13 and then the pipeline 10 with compressed air supplied to it from the compressor 9 with its subsequent dispersion in the aeration chamber 11. As a load in the bioreactor, dispersed materials with a size of from 1 to 5 mm, both in a stationary and fluidized state. Substances of both organic and inorganic nature can be used as dispersed materials. The choice of the loading of the column bioreactor with particle sizes from 1 to 5 mm, which is either in a stationary or fluidized state, as well as the taper angles of the lower parts of the column bioreactor and the flotation settler, were justified as a result of special experimental studies. If it is necessary to drain water from the intermediate tank 12, it is discharged through the nozzle 14. The foam product formed during the implementation of the combined flotation process of water purification is removed from the foam trough 6 and then enters through the nozzle 26 and the pipeline 27 and through the nozzle 28 into the flotation settler 24, from which the sediment, being exposed to the vibrator 30, is discharged through the pipeline 23 to the screw thickener 18, into which the sediment also enters from the housing 1 through the connecting pipe 25 and where it is thickened, after which the condensed concentrate enters the sediment collector 22, and the clarified water into collection 20. The clarified water is removed from the flotation tank 24 through the diffuser 29 and is used for its intended purpose. The quality of the obtained pure water satisfies the water quality requirements of fishery water bodies in all respects, and the degree of sediment thickening makes it transportable with a residual moisture content of 60 to 70%, and when using known devices, the purified water quality meets the water quality requirements of fishery water bodies only in terms of indicators.

The proposed bioflotocombine can be autonomously used as a local treatment plant with an area smaller than in the case of using facilities - analogues up to 1.5-2.5 times.

Claims (5)

1. Bioflotocombin for wastewater treatment, including a body, inside which there are partitions, and on the outside there are nozzles, respectively, for supplying the working fluid, waste water, a cover, a foam chute with a nozzle for removing the foam product, a pipe for discharging purified water, a connecting pipe for removing sediment in a screw thickener having an external drive, characterized in that the purified water branch pipe is connected in series with a pipeline to the columned bioreactor with a lower conical part with a load placed inside, and the outlet branch pipe of the froth trough is connected to a float settler with a conical bottom with a vibrator placed under it, connected by a pipeline to the inlet nozzle of the screw thickener. 2. Bioflotocombin for wastewater treatment according to claim 1, characterized in that the loading of the column bioreactor is made of a dispersed material with a particle size of 1 to 5 mm. 3. Bioflotocombin for wastewater treatment according to claim 1, characterized in that the load is both in a stationary and in a fluidized state. 4. Bioflotocombin for wastewater treatment according to claim 1, characterized in that the lower conical part of the column bioreactor has a taper angle of 20 to 60°. 5. Bioflotocombin for wastewater treatment according to claim 1, characterized in that the conical bottom of the flotation separator has a taper angle from 30 to 75°.

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