WO2002026637A1

WO2002026637A1 - Method for treating a stream of water and a corresponding device for implementing said method

Info

Publication number: WO2002026637A1
Application number: PCT/CZ2001/000045
Authority: WO
Inventors: Petr Pavlovic Zacharov
Original assignee: Aqua-Z, S.R.O.
Priority date: 2000-09-06
Filing date: 2001-08-22
Publication date: 2002-04-04
Also published as: AU2001279553A1; CZ20003247A3

Abstract

The device for implementing the inventive method is characterized in that the collecting basin (6) is connected to the interior of the housing (9) by means of a connection conduit (7). An inner casing (71), which is connected to the connection conduit (7) and which leads into the lower part of the housing (9), is provided, on the side facing the interior of the housing, with the first weak current electrode (8) and, on the outer surface, with a hermetically isolated induction coil (12) and is connected to the third power source (13). The outer casing (91) is provided with the second weak current electrode (10), and the lower part of the housing (9) is closed opposite the outlet of the inner casing (71) by a transparent plate (14), behind which the radiation source (15) is situated. Both weak current electrodes (8, 10) are connected to the opposite poles of the second current source (11). The outflow conduit (18), which is provided with outflow magnets (19) and with a filter (20), leads into the upper part of the casing (91) on the side of the conduit connection (17), and the supply conduit (1) is provided with inflow magnets.

Description

Process for treating a water flow and device for carrying it out

Area of technology

The invention relates to a method for treating a water flow and the device for carrying it out in the field of water treatment, in particular for the production of drinking water from open water and for the treatment and disinfection of waste water from industry and the municipal area, more precisely, for water treatment with light radiation and with magnetic and electric field. The invention can be used for the purification of industrial water intended for technical and other purposes.

Current state of the art

A method for treating a water flow according to the patent specification RU 111 4623 is known, in which the waste water is acted on with UV rays, which are frequency-modulated in the range of 12-25 kHz, and at the same time with an electrical high-voltage pulse field. A disadvantage of this method is that it is not possible to purify solid constituents to a high degree in the water stream, since it cannot act selectively on the ion composition. In addition, the reaction rate depends on the temperature.

Also known is a method for treating a water flow according to patent WO 9714655, which is based on the action of electrical and magnetic fields on the moving water flow using the current source, which is adapted to the variable length, average and impedance of the coil. This system is used to remove mineral deposits.

The proposed method comes closest to the method for treating the water flow according to patent specification RU 2099290, which provides for treatment with a reactant - a coagulant, and then with discharge pulses with a specific energy of 15 kJ / dm ³ , whereupon the water flow causes flotation, one undergoes biological cleaning and sorption on carbon filters. A disadvantage of this method is high costs for the specific energy per unit volume, the use of reactants and the biological purification.

Essence of the invention

The aim of the invention is to obtain water of the required purity with little energy and without the use of any type of reactant.

This goal is achieved with the help of the method for treating a water flow, which consists of flotation, impulse treatment with an electric and magnetic field and solids separation by filtering, the nature of which is characterized in that the supplied water flow through the magnetic field, the subsequent electroflotation and Sludge removal is preactivated, then subjected to simultaneous treatment with light radiation and with pulses of the electric field "E" and the magnetic field "H", and the treatment of the water flow with the subsequent action of the magnetic field is completed.

Another essence of the invention is that electroflotation by treating the water flow with electrical current with a current density in the range of 25-100 A / m ² at a polarity change frequency of 0.01 Hz It is guaranteed that during pulse treatment, low-current or high-current pulses of the electrical field "E" and / or the magnetic field "H" with a frequency in the range of 0.01-400 Hz with the same phase

The beginning of the pulse can be used, the impulses of the electric field "E" and / or the magnetic field "H" being modulated according to amplitude, frequency, width or phase during pulse treatment of the water flow and being entered in the regime of the advancing wave.

It is also essential that the light irradiation of the water flow at a wavelength from vacuum oil to long-wave infrared radiation in the range of 0.15-600 μm and an energy corresponding to the properties of the component contained in the water flow is carried out so that the light in the range of 0.1 -20 kHz is frequency modulated and is advantageously monochromatic.

The device for treating a water flow consists both of means for treating the water flow with an electrical and / or magnetic field, and of a container which is provided with a feed pipe, in its upper part with a sludge drain, a collecting container for the water flow of normal purity contains and is provided on the inside with a set of high-voltage electrodes, each of which two adjacent poles are reversed. The essence of the device is that the collecting container is connected to the interior of the housing by means of a connecting pipeline, in which, on the one hand, the connecting pipeline opens into the lower part of the housing, on the inside with the first low-voltage electrode and on the outer surface with a hermetically insulated one Connects induction coil provided inner jacket connected to the third power source. The outer casing is provided with the second low-current electrode, and the lower part of the housing opposite the mouth of the inner casing is blocked off by a transparent plate, behind which the light radiation source is located. Both low-current electrodes with the opposite poles are the second power source connected, and in the upper part of the casing opens laterally the connector of the drain pipe provided with outlet magnets and a filter, the supply line, however, is provided with inlet magnets.

A further essence of the device according to the invention is that the inner casing is formed and opens into the housing in such a way that its inlet passage cross section is both the passage cross section between the outer surface of the inner casing and the inner surface of the outer casing and that through the gap between the end edge the inner cladding and the transparent plate formed passage cross-section.

And finally, the essence of the invention is that the outer casing of the housing and the inner casing are made of dielectric, magnetically permeable material.

Description of the figures on the attached drawings

The invention is illustrated in the accompanying drawings, where Fig. 1 shows the general scheme of the proposed method and the device, Fig. 2 the circuit diagram of the proposed method and the device, Fig. 3 the overall view of the concrete embodiment of the device for treating the water flow and Fig. 4 shows the vertical axis section through the housing of the device for the simultaneous treatment of the water flow with light radiation and electrical and magnetic pulse fields. Embodiments of the invention

The proposed method is based on the step-by-step treatment of the water flow and comprises the activation of the water flow by means of a weak magnetic field “Hi” shown in FIG. 1 as stage “A”, a subsequent electroflotation, removal of the concentrated

Pollution solids and the extraction of water of the usual purity in stage "B". Then in stage "C" the water is treated simultaneously with light radiation "I" from vacuum ultraviolet to long-wave infrared in the range from 0.15-600 μm and with the electrical impulse field "E" as well as the magnetic impulse field "H" with the phase of the impulse beginning. The optimal effect is achieved by using crossed fields. The water flow is cleaned in stage "D" by the second, additional treatment of the water flow with a weak magnetic field "H ₂ " and the subsequent filtering ended.

The cleaning of the water flow in the proposed procedure takes place by means of a complex of physicochemical processes which accompany the simultaneous treatment of the water flow with light radiation and electrical and magnetic pulse fields without the use of reactants.

The pulses of the electrical field "E" and the magnetic field "H" are selected depending on the properties of the treated water and can be low-current or high-current pulses, the frequency of which is selected from a value range of 0.01-400 Hz. The pulses of the electrical field "E" and / or the magnetic field "H" can be modulated according to amplitude, frequency, width, phase or other parameters or entered in the mode of the advancing wave.

The length of the light waves is selected depending on the type and degree of water pollution, from vacuum ultraviolet to long-wave infrared radiation in the range of 0.15-600 μm, the waves can be in the range of 0.1-20 kHz be frequency modulated and lie in both the broad and the monochromatic spectrum.

The proposed method can be implemented in a device which consists of a container 3 with an inlet pipeline 1, to which input magnets 2 are attached, either permanent magnets or electromagnets. The container 3 is provided in its upper part with an unillustrated device for discharging the sludge in the form of a thick foam, which arises in the course of the electroflotation, and with a collecting container 6 for the pre-cleaned water of ordinary purity, which with the actual space of the container 3 is connected via a sieve or via filtering slots 61. Inside, the container 3 is provided with a set of synchronized, vertically mounted high-voltage electrodes 4, each of which two adjacent ones are reversed, and which are connected to the opposite poles of the first, high-voltage source 5.

The collecting container 6 is connected via the connecting pipe 7 to the housing 9 in the form of a cylinder, in the interior of which the inner casing 71 is connected to the connecting pipe 7 in the form of a coaxially mounted cylindrical pipe made of dielectric, magnetically permeable material, which in the lower part of the housing 9 is open. The inner casing 71 is provided on the inside with the first, advantageously a circular, low-current electrode 8, and on the outer surface with a hermetically insulated induction coil 12 connected to the third current source 13, advantageously a generator.

The outer casing 91 of the housing 9, which is also made of a dielectric, magnetically permeable material, is provided with a second, advantageously a circular, low-current electrode 10, and the lower part of the housing 9 is blocked off from the mouth of the casing 71 with a transparent plate 14, behind which the radiation source 15 connected to the third current source 16 is located. The inner casing 71 is like this formed and opened into the housing 9 that their inlet passage cross-section is equal to both the passage cross-section between the outer surface of the inner casing 71 and the inner surface of the outer casing 91 and the passage cross-section formed by the gap between the end edge 72 of the inner casing 71 and the transparent plate 14. Both low-current electrodes 8, 10 are connected to the opposite poles of the second power source 11, and in the upper part of the casing 91, not far from the second low-current electrode 10, the nozzle 17 of the outlet pipeline 18 provided with outlet magnets 19 and a filter 20 opens laterally. The inputs of the current sources 5, 11, 13 and 16 are then connected to the corresponding outputs of the control circuit 21, as shown in Fig. 2.

For the purpose of realizing the treatment of the water flow with the aid of the above-mentioned device, a voltage of 1.7-2.5 V with a current density in the value range of 25-100 A / m ² and a polarity change frequency becomes from the first current source 5 to the high current electrodes 4 fed from 0.01 Hz. A voltage with a frequency in the value range of 0.01-400 Hz, which forms the electrical pulses of the field “E”, is fed from the second current source 11 to the low current electrodes 8, 10. The third current source 13 is used to supply the induction coil 12 Current supplied, which forms the magnetic pulses of the field "H" with a frequency in the range of 0.01-400 Hz, with a voltage of 100 V and a pulse duration τ of at most 5 μsec, and thus the in-phase start of the magnetic pulses "H", the electrical pulses "E" and the light pulses from the radiation source 15 are guaranteed.

The pre-cleaned water flow is fed through the inlet pipeline 1, where in stage "A" activation takes place by means of the magnetic field "Hi", the result of which is a disturbance in the balance between the atoms and the excited elementary particles and the existing compounds, taking into account the Anisotropy of the force play is what leads to a metastable state, called structured activated state of the medium. In this state, the water in stage “B” flows into the container 3, where the high-voltage electrodes 4 from the first current source 5 pulse high-current with a voltage of 1.7-2.5 V and a current density of 25-100 A / m ² and the polarity is changed at a frequency of 0.01 Hz. The electric field on the high-voltage electrodes causes 4 processes of sorption, extraction, flotation of ion exchange and crystal formation At the end of this stage, the bubbles that form on the high-voltage electrodes 4 contribute to the flotation of the solid admixtures by trapping the solids and the coagulation of the colloid particles, and separate them in the form of a solid foam. The water flow then leaves the container 3, and when it flows through the filtering slots 61 into the collecting container 6 it has the usual purity and transparency.

The water flow escapes from the collecting container 6 via the connecting pipeline 7 and the inner casing 71 into the outer casing 91 of the housing 9 and thus reaches stage “C” in the zone of simultaneous action of the electrical field “E” formed by the low-current electrodes 8, 10, of the magnetic field “H” formed by the induction coil 12 and the energy of the radiation source 15. The electric field “E” and the magnetic field “H” act on the water flow by means of pulses with an in-phase start.

Under the conditions of the superimposition of the electric field “E” and the magnetic field “H” and in the presence of the oxygen and hydrogen formed on the high-current electrodes 4, oxidation-reduction processes take place, however, photochemical processes take place simultaneously as a result of the light radiation. It was found that the most effective cleaning of the water flow is achieved under the condition of the overlaid fields. Thanks to the control circuit 21 connected to the current sources 5, 11, 13 and 16, all the necessary characteristics of the water treatment are regulated depending on the determination of its properties, the degree and the type of contamination.

Thereafter, the water flow in stage “D” passes through the nozzle 17 into the drain pipe 18, where it is treated by the outlet magnets 19 with a weak magnetic field “H ₂ ”, this treatment of the treatment with the magnetic field “H ^ ¹ in the feed pipe 1 is analog. In this state, the water flow is directed to the filter 20. The inflow speed in the basin 3 and the discharge speed from this as well as the water flow speed in the inner casing 71 and in the outer casing 91 of the housing 9 are the same.

The enumerated stages of the water treatment cause the solids contained in the water to be released and captured on the filter 20, the water flow activated in the magnetic field “H” thereby acquiring the biological activity.

Example of a concrete implementation of the process for water flow cleaning

The cleaning was subjected to water from open water containing 20-40 mg / l suspension, about 1000-500 U / ml bacterial flora and about 100 mg / l BOD.

The initial water flow was fed in via an inlet pipeline 1 in the self-flow. With the help of the inlet magnets 2, the water flow was treated with a weak magnetic field of 0.001 A / m and then reached the container 3 with a volume of approximately. 0.5 m ³ , which corresponds to a performance of 5. m ³ / h. At the bottom of the container 3, plate-like high-voltage electrodes 4 with a total surface area of 25 m ^{2 were} fastened, the height of which reached about half the height of the container 3. Voltage in the value range of 1.7-2.5 V at a current density of 25-100 A and a total current of at most 1000 A was fed to the heavy current electrodes 4, which were connected in alternating order to the opposite poles of the first current source 5. The polarity changed with a frequency of 0.01 Hz.

The speed of the water flow between the heavy current electrodes 4 was 0.7 mm / s. The solids separated out as solid foam in the course of the electroflotation and the coagulated substances were removed from the surface into the sludge separation container by wiping off the foam using a special device in the manner of a scraper.

The stream of water cleaned from the sludge, i.e. the water of ordinary purity, flowed at the water level through special filtering slots 61 provided in the upper part of the container and passes from the container 3 into the collecting container 6, from which it runs at a speed of 300 mm in self-running mode / s into the inner casing 71 and further into the outer casing 91 of the cylindrical housing 9.

AC voltage within 12 V with a current density of approx. 10 A / m ^{2 was} supplied to the low-current electrodes 8, 10 attached in the housing 9. The pulse frequency in this case was 10-25 Hz and was determined depending on the specific composition of the initial water to be cleaned.

The required magnetic field was ensured by the third current source 13 in the form of a generator at a voltage of approximately 100 V with a frequency that was synchronized with the pulses of the electric field, provided that the duration of the pulses did not exceed 5 μsec. The treated water flow then flowed through the nozzle 17 into the drain line 18, where, similar to the feed line 1, it was treated with a weak magnetic field.

The water flow filtered after the treatment according to the proposed method contained less than 1 mg / l suspension, at most 3 U / l bacterial flora and had a BOD ₇ of approximately 5-10 mg / l.

The dependence of the facility's productivity on some of its metrics is shown in Table 1.

Table 1

Power electrodes o total flow of water material

(m ³ / h) surface m on the measuring electrodes ng (kW)

(m ² ) electrodes

(A)

0.1 5 380 drinking water Titan 1

0.1 5 380 Domestic. From steel 1 water

1, 0 15 1100 Domestic. Steel 2.7 wastewater

5.0 25 1875 Domestic. Steel 4.7 waste water

10.0 37 2800 Domestic. Steel 7.0 waste water

20.0 50 3800 Domestic. Steel 9.5 wastewater The recorded version is not the only possible solution according to the invention, but the inner sheath 71 and the outer sheath 91 need not be formed from pipes, they can have any cross-section and can be made from different types of material. Both low-current electrodes 8 and 10 also need not be circular, and the high-current electrodes 4 can be other than plate-like and can be stored in the container 3 differently than vertically and in parallel.

Claims

1. A method for treating a water flow that consists of flotation, pulse treatment with an electric and magnetic field and solids separation by filtering, characterized in that the supplied water flow through the magnetic field pre-activates the subsequent electroflotation and sludge removal, then a simultaneous treatment with is subjected to light irradiation and with pulses of the electric field “E” and the magnetic field “H”, and the treatment of the water flow with the subsequent action of the magnetic field is completed.

2. A method for treating a water flow according to claim 1, characterized in that the electroflotation is ensured by treating the water flow with electrical current with a current density in the range of 25-100 A / m ² at a polarity change frequency of 0.01 Hz.

3. A method for treating a water flow according to claim 1, characterized in that used in the pulse treatment low-current pulses of the electrical field "E" and / or the magnetic field "H" with a frequency in the range of 0.01-400 Hz with the same phase pulse start become.

4. A method for treating a water flow according to claim 1, characterized in that in the pulse treatment high current pulses of the electrical field "E" and / or the magnetic field "H" are used with a frequency in the range of 0.01-400 Hz with the pulse starting in phase become.

5. A method for treating a water flow according to claim 3 and 4, characterized in that the pulses of the electric field "E" and / or the magnetic field "H" are modulated according to amplitude, frequency, width or phase in the pulse treatment of the water flow.

6. A method for treating a water flow according to claim 4 and 5, characterized in that the impulses of the electric field "E" and / or the magnetic field "H" are entered in the regime of the advancing wave in the pulse treatment of the water flow.

7. A method for treating a water flow according to claim 1, 3 and 5, characterized in that the light irradiation of the water flow at a wavelength from vacuum ultraviolet to long-wave infrared radiation in the range of 0.15-600 microns and the properties of the component contained in the water flow appropriate energy is made.

8. A method for treating a water flow according to claim 1, 3 and 6, characterized in that the light is frequency modulated in the range of 0.1-20 kHz.

9. A method for treating a water stream according to claim 1, 3 and 7, characterized in that the light is monochromatic.

10. The device for treating a water flow consists of both means for treating the water flow with an electrical and / or magnetic field, as well as from a container which is provided with a feed pipe, in its upper part with a sludge drain, a collecting container for the water flow Contains usual purity and is provided on the inside with a set of high-voltage electrodes, each of which two adjacent poles are reversed, characterized in that the collecting container (6) is connected to the interior of the housing (9) by means of a connecting pipeline (7) on the one hand to the connecting pipeline (7), the inner casing which opens into the lower part of the housing (9) and which on the inside is provided with the first low-voltage electrode (8) and on the outer surface with a hermetically insulated induction coil (12) and which is connected to the third power source (13) (71) connects, the outer jacket (91) with the second Schwac Hstromelektrode (10) is provided, and the lower part of the housing (9) against the mouth of the inner shell (71) shuts off a transparent plate (14), behind which the Radiation source (15) is located, wherein both low-current electrodes (8, 10) are connected to the opposite poles of the second current source (11), and in the upper part of the casing (91) laterally the nozzle (17) with the outlet magnet (19) and one Drain pipe (18) provided with a filter (20) opens, while the inlet pipe (1) is provided with inlet magnets.

11. A device for treating a water flow according to claim 10, characterized in that the inner casing (71) is formed and opens into the housing (9) so that its inlet passage cross section both the passage cross section between the outer surface of the inner casing (71) and the The inner surface of the outer casing (91) and the passage cross section formed by the gap between the end edge (72) of the inner casing (71) and the transparent plate (14) are the same.

12. A device for treating a water flow according to claim 10 and 11, characterized in that the outer casing (91) of the housing (9) and the inner casing (71) consist of dielectric, magnetically permeable material.