RU2658411C1 - Float combine for waste water purification - Google Patents

Abstract

FIELD: water and air purification technology.

SUBSTANCE: invention relates to waste water purification. Waste water treatment float combine includes body 1, on the outside of which there are nozzles for supplying source water 3, tapping of purified water 7 and withdrawal of float sludge 14, a block for thickening the flotation sludge in the form of ejector 11 and a joint sludge dewatering unit and a flotation sludge using bag 16 of synthetic fabric. Inside the body perforated element 13, branch pipe for supplying working fluid, semi-submergible partition 6 with a lower window with a grid are installed. Synthetic fabric bag 16 is disposed on vibrating platform 18 with filtrate outlet 20 which is connected by conduit 21 to working fluid supply pipe 2 on the combine body. Pump 22, coagulant feed nozzle 23, a pair of magnets 24, flocculant supply branch 25, air conditioning chamber 26 are sequentially mounted on the pipeline. Distance between the nozzles of coagulant supply 23 and flocculant 25 is from 10 to 500 diameters of pipeline 21.

EFFECT: invention makes it possible to increase the efficiency of waste water purification and to increase the degree of sludge and float sludge dewatering.

3 cl, 1 dwg

Description

The invention relates to methods and devices for wastewater treatment.

State of the art

The known flotation machine for wastewater treatment comprises a housing, on the outside of which there are nozzles for supplying raw water, discharging purified water and discharging fleet sludge and sludge, and perforated partitions and outgoing fleet sludge with a clarified water outlet are installed inside the housing.

A significant disadvantage of the known technical solution is the precipitation of particles from the foam layer, which leads to a decrease in the efficiency of wastewater treatment and the inability to obtain flash sludge in condensed form due to the lack of a special unit.

(B.S. Ksenofontov, A.S. Kozodaev, R.A. Taranov, M.V. Ivanov, E.V. Petrova, M.S. Vinogradov, A.A. Balina. Flotation combines - flotation equipment of the future for cleaning wastewater, Ecology and Industry of Russia, 2013, No. 12, p. 4-8)

A technical solution is also known - a flotocomineer for wastewater treatment, comprising a housing, on the outside of which there are nozzles for supplying raw water, discharging purified water and discharging fleet sludge and sludge, and perforated partitions and a clarified water outlet device are installed inside the housing.

A significant disadvantage of the known technical solution is the precipitation of particles from the foam layer, which leads to a decrease in the efficiency of wastewater treatment and the inability to obtain flash sludge in condensed form due to the lack of a special unit.

(B.S. Ksenofontov, A.S. Kozodaev, R.A. Taranov, M.S. Vinogradov, E.V. Petrova, A.A. Voropaeva. Industrial wastewater treatment using flotation combines. Ecology and Industry of Russia, 2014, No. 7, p. 12-15)

A close technical solution is a flotation machine for wastewater treatment that contains a housing, on the outside of which there are nozzles for supplying raw water, discharging purified water and discharging flash sludge and sludge, and perforated partitions and a clarified water outlet device are installed inside the housing.

A significant disadvantage of the known technical solution is the precipitation of particles from the foam layer, which leads to a decrease in the efficiency of wastewater treatment and the inability to obtain flash sludge in condensed form due to the lack of a special unit.

(Ksenofontov B.S. Wastewater treatment: flotation kinetics and flotation combines. M .: Infra-M. - 2015. P. 136-140 - prototype)

A disadvantage of the known flotation unit is the low efficiency of wastewater treatment, as well as the inability to obtain a thickened flotation sludge.

The closest technical solution is a flotation machine for wastewater treatment (pos. Dec. According to application No. 2016130597/05 (047584) dated 03/23/2017), which contains a housing on the outside of which there are nozzles for supplying source water, drainage of purified water and the output of sludge and sludge, and inside the case there are perforated partitions and a device for removing clarified water. According to the invention, the flotokombine further comprises a flotation sludge thickening unit in the form of an ejector articulated with a hydrocyclone and a sludge dewatering unit consisting of a crimping device, inside which a bag of synthetic fabric is placed, and a bottom for collecting the filtrate is located. In this case, an ejector with a pressure drop in it from 0.05 to 0.5 m and a synthetic fabric with a cell size from 0.001 to 0.1 mm are used.

A disadvantage of the known flotation machine is the low efficiency of wastewater treatment, as well as a low degree of thickening of sludge

Disclosure of invention

The objective of the invention is to develop a new design that provides increased cleaning efficiency and an increase in the degree of dehydration of sludge and sludge. The task and the specified technical result are achieved in that the flotation machine for wastewater treatment contains a housing on the outside of which there are nozzles for supplying raw water, drainage of purified water and withdrawal of sludge, a thickening unit for sludge in the form of an ejector, a unit for joint sludge dewatering and sludge with using a bag made of synthetic fabric, and a perforated element is installed inside the casing, a recirculating fluid supply pipe characterized in that the casing is installed half-inside a septum with a lower window with a net and a bag made of synthetic fabric is located on a vibrating platform with a nozzle for outputting the filtrate, which is connected by a pipe to a pipe for supplying recirculating liquid to the housing of the flotator, and in this case, a pump, a pipe for supplying coagulant, and steam are installed in series magnets, flocculant supply pipe, air conditioning chamber, and the distance between the coagulant and flocculant supply pipes is from 10 to 500 pipeline diameters. In this case, the vibrating platform is made with the ability to work with a frequency of 10 ... 1000 Hz and an amplitude of 1 ... 25 mm, and the magnets are made with the possibility of creating tension between them from 2000 to 5000 E.

Image enumeration

In FIG. 1 shows a schematic of a flotation machine for wastewater treatment.

1 - copus flotokombayna; 2 - pipe for supplying recirculating fluid; 3 - pipe for supplying dirty water; 4 - foam trough; 5 - pipe outlet foam product; 6 - semi-submersible partition; 7 - pipe outlet clean water; 8 - control valve; 9 - filter mesh; 10 - connecting element; 11 - ejector; connecting hose; 13 - perforated element; 14 - pipe discharge sediment; 15 - case; 16 - bag; 17 - pores; 18 - vibration platform; 19 - a collection of filtrate; 20 - pipe outlet of the filtrate; 21- pipeline; 22 - pump; 23 - pipe supply coagulant; 24 - a pair of magnets; 25 - flocculant supply pipe; 26 - air conditioning chamber; 27 is a recirculating fluid supply pipe.

The implementation of the invention

The proposed flotation machine for wastewater treatment includes a housing 1, (Fig. 1), on the outside of which there are nozzles 2 and 3, respectively, for supplying recirculating liquid and source (dirty) water, as well as a foam chute 4 with a nozzle for outputting foam product 5, a nozzle clean water outlet 7 with a control valve 8, a sediment outlet nozzle 14, on which a cover 15 of a bag 16 having pores 17 is put on. Moreover, the nozzle 5 is connected by a connecting element 10 to an ejector 11, which is connected by a hose 12 to a bag 16, oscillating vertically P using a vibrating platform 18, under which a filtrate collector 19 with an outlet pipe 20 is placed, connected by a pipe 21 to a pump 22. After the pump 22, pipes 21 for introducing a coagulant 23, a pair of magnets 24, a flocculant supply pipe 25 and a flocculation chamber are placed on the pipe 21 26.

Inside the housing 1, a semi-submersible partition 6 with a lower window with a mesh 9 and a perforated element 13 connected via a pipe 27 to the pipe 2 are installed.

The principle of operation of the flotocomine is as follows. The dirty water coming through the pipe 3 is mixed with recirculating and working fluids, which leads to the formation of flotation complexes and aggregates of pollution particles without bubbles, which are separated into a foam layer and sediment within about 15-30 minutes. The foam layer is removed into the foam chute 4, and then through the nozzle 5 it enters by means of suction into the ejector 11 and then through the hose 12 to the bag 16. The aggregates of particles of contaminants without air bubbles precipitate, which through the nozzle 14 and then through the bag enters the bag 16. The mixture of sludge and foam product entering the bag 16 is dehydrated due to gravitational moisture removal and the simultaneous intensifying action of the vibrating platform 18. The filtrate formed in this case is discharged through the pipe 20 and is then used as a recirculator guide fluid supplied to the working space through the pipe 2. The dewatered sludge is removed together with the bag 16.

Pure water is discharged from the working space of the housing 1 sequentially through the lower window with the mesh 9 of the semi-submersible partition 6 and then through the pipe 7 with the possibility of controlling the outlet flow.

Claims (3)

1. Flotokombine for wastewater treatment, including a housing on the outside of which there are nozzles for supplying raw water, drainage of purified water and withdrawal of sludge, a thickening unit for sludge in the form of an ejector and a unit for the joint dewatering of sludge and sludge using a bag of synthetic fabric inside the case there is a perforated element, a nozzle for supplying working fluid, characterized in that a semi-submersible partition with a lower window with a mesh is installed inside the case, and the bag is made of synthetic the cani is located on a vibrating platform with a nozzle for outputting the filtrate, which is connected by a pipeline to the nozzle for supplying working fluid on the flotocomine housing, and the pump, a coagulant nozzle, a pair of magnets, a flocculant nozzle, an air conditioning chamber are installed in series on the pipeline, and the distance between the nozzles supply of coagulant and flocculant is from 10 to 500 pipeline diameters. 2. Flotocomineer for wastewater treatment according to claim 1, characterized in that the vibrating platform is configured to operate with a frequency of 10 ÷ 1000 Hz and an amplitude of 1 ÷ 25 mm. 3. Flotokombine for wastewater treatment according to claim 1, characterized in that the magnets are made with the possibility of creating tension between them from 2000 to 5000 E.

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