Emergency purification treatment device for river pollution

Abstract

The invention discloses an emergency purification treatment device for river pollution, which comprises an emergency treatment unit, the emergency treatment unit comprises a micro-electrolysis treatment unit, a biological treatment unit and a photochemical treatment unit, and the micro-electrolysis treatment unit, the biological treatment unit and the photochemical treatment unit are sequentially connected from left to right; the micro-electrolysis treatment unit is filled with micro-electrolysis filler, the biological treatment unit is filled with cold-resistant activated sludge biological filler, the photochemical treatment unit is filled with natural iron ore filler, and a plurality of sandbags are arranged at the bottoms of the three sides of the emergency treatment unit. According to the emergency purification treatment device for river pollution, the multi-stage and multi-stage purification design is adopted, the removal effect of 70%-80% of composite pollutants COD and 60%-70% of ammonia nitrogen caused by ice and snow melting in the dry season and spring in a freeze-thaw area can be achieved, and the emergency purification treatment device has the advantages of being high in treatment efficiency, rapid in starting and convenient to use and has the characteristic of emergency use.

Description

Technical Field

[0001] The present invention relates to the field of ecological environment protection, and in particular to an emergency purification treatment device for river pollution. Background Art

[0002] Snow in densely populated cities or towns will carry pollutants from human activities for a long time to form ice-snow composite pollutants. The dry season and melting of ice and snow in freeze-thaw areas will cause river pollution.

[0003] In early spring, as the temperature rises, these ice and snow composite pollutants melt and enter the river tributaries through ditches, and then flow into the main river, causing river pollutants to exceed the standard quickly, the water quality of the national test section to deteriorate sharply, and the river water purification capacity to decrease, thereby endangering the safety of river aquatic ecology. However, the existing river pollution treatment devices have the following disadvantages:

[0004] (1) The existing river pollution treatment uses ecological interception dams, which have low treatment efficiency and slow start-up speed and are not suitable for emergency use. The biological treatment emergency unit uses room temperature activated sludge, which has the disadvantages of long start-up time and low treatment efficiency.

[0005] (2) Existing photocatalytic treatment units for river pollution treatment have the disadvantages of expensive catalysts, easy deactivation and poor visible light response efficiency. In addition, the purification equipment has high energy consumption, which increases operating costs. Summary of the invention

[0006] The purpose of the present invention is to provide an emergency purification treatment device for river pollution, so as to solve the problems proposed in the above background technology that the existing river pollution treatment adopts ecological interception dam, which has low treatment efficiency, slow startup speed and does not have the characteristics of emergency use. The biological treatment emergency unit adopts normal temperature activated sludge, which has the disadvantages of long startup time and low treatment efficiency. The photocatalytic treatment unit for river pollution treatment has the disadvantages of expensive catalyst, easy deactivation and poor visible light response efficiency, and the purification treatment equipment has high energy consumption, which increases the operating cost.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an emergency purification treatment device for river pollution, comprising an emergency treatment unit, wherein the emergency treatment unit comprises a micro-electrolysis treatment unit, a biological treatment unit and a photochemical treatment unit, wherein the micro-electrolysis treatment unit, the biological treatment unit and the photochemical treatment unit are connected in sequence from left to right, the interior of the micro-electrolysis treatment unit is filled with micro-electrolysis filler, the interior of the biological treatment unit is filled with cold-resistant activated sludge biological filler, the interior of the photochemical treatment unit is filled with natural iron ore filler, and a plurality of sandbags are arranged at the bottom of the three sides of the emergency treatment unit.

[0008] When using an emergency purification treatment device for river pollution of the present technical solution, a multi-stage purification design is adopted, which can achieve a removal effect of 70-80% COD and 60-70% ammonia nitrogen of complex pollutants caused by the dry season in the freeze-thaw zone and the melting of ice and snow in spring. It has the characteristics of high treatment efficiency, fast startup and easy use, and has the characteristics of emergency use.

[0009] As a preferred technical solution of the present invention, a water inlet is provided at the bottom of the micro-electrolysis treatment unit on the side away from the biological treatment unit, and the water inlet is connected to a ditch or tributary of ice-melt composite pollutants.

[0010] As a preferred technical solution of the present invention, an overflow port is provided at the top of the connection between the micro-electrolysis treatment unit and the biological treatment unit. The overflow port is provided to connect the micro-electrolysis treatment unit and the biological treatment unit together.

[0011] As a preferred technical solution of the present invention, a through hole is provided at the bottom of the connection between the biological treatment unit and the photochemical treatment unit, so as to connect the biological treatment unit and the photochemical treatment unit together.

[0012] As a preferred technical solution of the present invention, a water outlet is provided on the top of the photochemical treatment unit on the side away from the biological treatment unit. The water outlet is provided to discharge the purified water.

[0013] As a preferred technical solution of the present invention, the micro-electrolysis filler is one of traditional iron carbon, modified iron carbon, micron iron carbon, micron modified iron carbon, nano iron carbon and modified nano iron carbon.

[0014] As a preferred technical solution of the present invention, the cold-resistant activated sludge biological filler adopts one of soft fiber filler, semi-soft filler, combined fiber filler, elastic three-dimensional filler, suspended filler, oblique suspended porous suspended filler, fiber ball filler, honeycomb oblique tube filler and honeycomb straight tube filler.

[0015] As a preferred technical solution of the present invention, the natural iron ore filler is one of goethite and hematite.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The multi-stage purification design can achieve the removal effect of 70-80% COD and 60-70% ammonia nitrogen of complex pollutants caused by the dry season in the freeze-thaw zone and the melting of ice and snow in spring. Compared with the publicly known ecological dams and ecological interception dams, it has the characteristics of high treatment efficiency, fast start-up and convenient use. It has the characteristics of emergency use. The cold-resistant (5-9℃) activated sludge pre-cultivated in the sewage treatment plant can enable the biological treatment unit to be quickly started in an emergency in winter and spring in cold areas, and continuously regenerated, overcoming the shortcomings of the long start-up time and low treatment efficiency of the normal temperature activated sludge used in the traditional biological treatment emergency unit;

[0018] 2. By setting up multi-stage emergency purification devices and strengthening the self-purification capacity of river water bodies, the water environment purification effect of tributary rivers can be improved. Multi-stage emergency purification devices can slow down the flow rate of river water and increase the residence time of river water, which is beneficial to the natural degradation of dry season and ice-melt composite pollutants. When water overflows over the dam top of the emergency treatment device, a waterfall will be formed, which is beneficial to increase the dissolved oxygen in the river water and further beneficial to the natural biodegradation of ice-melt composite pollutants. The photochemical treatment unit uses light to drive natural iron ore to produce active oxygen substances for the degradation of trace pollutants, overcoming the shortcomings of traditional photocatalytic treatment units, such as expensive catalysts, easy deactivation and poor visible light response efficiency. It is more green and environmentally friendly, without special and large high-power consumption equipment, the box structure is simple, small in size, and can be detached and assembled. The aeration device in the river only requires a small solar-powered pump and a low-power aeration device. The assembly, operation and maintenance of the entire device are simple and can be used unattended. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A top view of the present invention;

[0020] Figure 2 It is a front cross-sectional view of the emergency treatment unit of the present invention;

[0021] Figure 3 is a top cross-sectional view of the emergency treatment unit of the present invention;

[0022] Figure 4 It is a schematic diagram of the principle of the present invention;

[0023] Figure 5 It is a schematic diagram of the arrangement of the present invention.

[0024] In the figure: 1. Emergency treatment unit; 11. Micro-electrolysis treatment unit; 111. Micro-electrolysis filler; 12. Biological treatment unit; 121. Cold-resistant activated sludge biological filler; 13. Photochemical treatment unit; 131. Natural iron ore filler; 2. Water inlet; 3. Overflow; 4. Through port; 5. Water outlet; 6. Sandbag. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] See also Figure 1-5 The present invention provides an emergency purification treatment device for river pollution, including an emergency treatment unit 1, which includes a micro-electrolysis treatment unit 11, a biological treatment unit 12 and a photochemical treatment unit 13. The micro-electrolysis treatment unit 11, the biological treatment unit 12 and the photochemical treatment unit 13 are connected in sequence from left to right. The interior of the micro-electrolysis treatment unit 11 is filled with a micro-electrolysis filler 111, the interior of the biological treatment unit 12 is filled with a cold-resistant activated sludge biological filler 121, and the interior of the photochemical treatment unit 13 is filled with a natural iron ore filler 131, which is used for the purification of ice-melt composite pollutants. A plurality of sandbags 6 are arranged at the bottom of the three sides of the emergency treatment unit 1 to fix the position of the emergency treatment unit 1.

[0027] When in use, the emergency purification treatment device can be stably placed in the river through the sandbags 6. The purification treatment device can remove 30-40% COD through the micro-electrolysis treatment unit 11, reduce the load of the biological treatment unit 12, quickly remove 40-60% COD, 60-70% ammonia nitrogen and adsorb 60-80% of total phosphorus in the biological treatment unit 12, and perform terminal treatment on difficult-to-biodegrade pollutants in the photochemical treatment unit 13.

[0028] A water inlet 2 is provided at the bottom of the micro-electrolysis treatment unit 11 on the side away from the biological treatment unit 12, an overflow port 3 is provided at the top of the connection between the micro-electrolysis treatment unit 11 and the biological treatment unit 12, a through port 4 is provided at the bottom of the connection between the biological treatment unit 12 and the photochemical treatment unit 13, and a water outlet 5 is provided at the top of the photochemical treatment unit 13 on the side away from the biological treatment unit 12.

[0029] When in use, the ice-melt composite pollutants enter the micro-electrolysis treatment unit 11 from the water inlet 2 through the ditch or pipe, then enter the biological treatment unit 12 from the overflow port 3, then enter the photochemical treatment unit 13 from the through port 4, and finally are discharged from the water outlet 5 into the receiving water body.

[0030] The micro-electrolysis filler 111 adopts one of traditional iron-carbon, modified iron-carbon, micron iron-carbon, micron modified iron-carbon, nano iron-carbon and modified nano iron-carbon; the cold-resistant activated sludge biological filler 121 adopts one of soft fiber filler, semi-soft filler, combined fiber filler, elastic three-dimensional filler, suspended filler, obliquely suspended porous suspended filler, fiber ball filler, honeycomb oblique tube filler and honeycomb straight tube filler; the natural iron ore filler 131 adopts one of goethite and hematite.

[0031] When in use, a multi-stage emergency treatment device can be set up on the riverbed, and the materials of the micro-electrolysis filler 111, the cold-resistant activated sludge biological filler 121 and the natural iron ore filler 131 in the device can be selected according to the purification requirements.

[0032] In specific use, the present invention is an emergency purification treatment device for river pollution. The ice-melting composite pollutants enter the micro-electrolysis treatment unit 11 through a ditch or a pipeline, then enter the biological treatment unit 12, and then enter the photochemical treatment unit 13. Finally, the effluent enters the receiving water body. Through the combination of the three, 30-40% COD is removed in the micro-electrolysis treatment unit 11, the load of the biological treatment unit 12 is reduced, 40-60% COD, 60-70% ammonia nitrogen and 60-80% total phosphorus are quickly removed in the biological treatment unit 12, and the terminal treatment of difficult biodegradable pollutants is carried out in the photochemical treatment unit 13. Through the combined use of the three, the pre-process of the micro-electrolysis treatment unit 11 can make the main The effective operation time of the biological treatment unit 12 is increased by 100%, the micro-electrolysis treatment unit 11 and the main biological treatment unit 12 remove 70-80% of the pollutants, the treatment of the photochemical treatment unit 13 effectively degrades the new pollutants, the micro-electrolysis treatment unit 11 absorbs and preliminarily degrades the difficult-to-biodegrade organic pollutants through the adsorption and micro-electrolysis of the micro-electrolysis filler 111, and in view of the differences in the characteristics of ice-melting composite pollutants in different cold regions, the material of the micro-electrolysis filler 111 can be selected from one or more of traditional iron-carbon, modified iron-carbon, micron iron-carbon, micron modified iron-carbon, nano iron-carbon and modified nano iron-carbon. The biological treatment unit 12 degrades and removes organic pollutants through the biological adsorption and degradation of activated sludge. Cold-resistant activated sludge By cultivating at low temperature (5-9°C) in the sewage treatment plant, rapid biofilm growth is carried out on the filler, and the filler includes soft fiber filler, semi-soft filler, combined fiber filler, elastic three-dimensional filler, suspended filler, oblique suspended porous suspended filler, fiber ball filler, honeycomb oblique (straight) tube filler. In the spring of cold regions, it can be urgently transported to the on-site biological treatment unit 12 for rapid emergency start-up to achieve rapid removal of biodegradable organic pollutants in ice-melting composite pollutants. The photochemical treatment unit 13 uses natural light to drive natural iron ore to effectively degrade trace new organic pollutants that are not completely degraded by the biological treatment unit 12. The light-driven natural iron ore will produce active oxygen substances for pollutant degradation through the electron transfer pathway. Natural iron ore that can be used to drive the production of reactive oxygen species driven by natural light, including goethite and hematite. Multi-stage emergency treatment is achieved by setting up 2-5 stage emergency treatment devices to achieve rapid interception and adsorption of ice-melt composite pollutants by the first stage emergency treatment device. A second stage emergency treatment device is set up 50-500m downstream of the riverbed, and a third stage emergency treatment device is set up at 100-1000m as needed, and so on. The rapidly constructed multi-stage combined emergency treatment device can slow down the flow velocity of the river channel and increase the residence time of the river water, which is beneficial to the natural degradation of the ice-melt composite pollutants. When the water overflows and flows over the dam top of the emergency treatment device, a waterfall will be formed, which is beneficial to increase the dissolved oxygen in the river water, and further beneficial to the natural purification and degradation of the ice-melt composite pollutants.

[0033] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An emergency purification treatment device for river pollution, comprising an emergency treatment unit (1), characterized in that: The emergency treatment unit (1) comprises a micro-electrolysis treatment unit (11), a biological treatment unit (12) and a photochemical treatment unit (13); the micro-electrolysis treatment unit (11), the biological treatment unit (12) and the photochemical treatment unit (13) are connected in sequence from left to right; the interior of the micro-electrolysis treatment unit (11) is filled with a micro-electrolysis filler (111); the interior of the biological treatment unit (12) is filled with a cold-resistant activated sludge biological filler (121); the interior of the photochemical treatment unit (13) is filled with a natural iron ore filler (131); and a plurality of sandbags (6) are arranged at the bottom of three sides of the emergency treatment unit (1).

2. The emergency purification device for river pollution according to claim 1 is characterized in that: A water inlet (2) is provided at the bottom of the micro-electrolysis treatment unit (11) on the side facing away from the biological treatment unit (12).

3. The emergency purification device for river pollution according to claim 1 is characterized in that: An overflow port (3) is provided at the top of the connection between the micro-electrolysis treatment unit (11) and the biological treatment unit (12).

4. The emergency purification device for river pollution according to claim 1 is characterized in that: A through opening (4) is provided at the bottom of the connection between the biological treatment unit (12) and the photochemical treatment unit (13).

5. The emergency purification device for river pollution according to claim 1 is characterized in that: A water outlet (5) is provided on the top of the photochemical treatment unit (13) on the side facing away from the biological treatment unit (12).

6. The emergency purification device for river pollution according to claim 1 is characterized in that: The micro-electrolysis filler (111) is one of traditional iron carbon, modified iron carbon, micron iron carbon, micron modified iron carbon, nano iron carbon and modified nano iron carbon.

7. The emergency purification device for river pollution according to claim 1 is characterized in that: The cold-resistant activated sludge biological filler (121) is one of soft fiber filler, semi-soft filler, combined fiber filler, elastic three-dimensional filler, suspended filler, oblique suspended porous suspended filler, fiber ball filler, honeycomb oblique tube filler and honeycomb straight tube filler.

8. The emergency purification device for river pollution according to claim 1 is characterized by: The natural iron ore filler (131) is one of goethite and hematite.

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