CN205076946U - Water body remediation composite set based on magnetic separation and constructed wetland - Google Patents

Abstract

The utility model discloses a combined device for water restoration based on magnetic separation and artificial wetland technology. The device mainly includes a micro-flocculation device, a magnetic flocculation device, a magnetic separation device, a filter device, an artificial wetland and the like. Among them, the filter device is equipped with water backwashing supporting facilities. After the backwash water is collected, it returns to the magnetic flocculation and magnetic separation device. After efficient mud-water separation, it is re-filtered and then enters the artificial wetland; the artificial wetland is equipped with a flexible aeration system. , so that the constructed wetland segments appear aerobic and hypoxic states, and strengthen the purification ability of the constructed wetland for pollutants, which can significantly reduce the risk of blockage during the operation of the constructed wetland.

Description

A combined device for water restoration based on magnetic separation and constructed wetland technology

technical field

The utility model relates to a combination device for water body restoration, which belongs to the field of water pollution prevention and control.

Background technique

Constructed wetlands mainly use biological, chemical and physical effects such as plant absorption, microbial degradation and wetland matrix adsorption to achieve sewage purification. As a water pollution prevention and control technology, constructed wetlands have unique advantages in terms of operating costs, eco-friendliness, and renewable resources, and have high environmental, economic, and social benefits. It has broad application prospects in and maintenance. However, the biggest problems faced by constructed wetlands are that they are easy to block, have limited purification capacity, and occupy a large area. In order to solve these problems, the patent CN203238097U discloses a micro-aeration composite vertical flow artificial wetland, which can aerate the wetland according to a certain aeration intensity and time, effectively alleviating the purification capacity of the artificial wetland due to insufficient dissolved oxygen. The problem is not high; the patent CN102992500A also uses a similar artificial wetland aeration mechanism to solve the problem of insufficient dissolved oxygen. In order to further solve the problem of blockage in wetlands, patent CN204400705U and patent CN204079602U both adopted a backwash system on the basis of enhanced aeration to achieve regular backwashing of wetlands and reduce the risk of blockage. Dealing with the problem greatly reduces the popularization and application of such technology.

Utility model content

The utility model aims at the shortcomings of artificial wetlands such as easy blockage and low purification capacity in sewage treatment and water purification, and proposes a water body repair combination device based on magnetic separation and artificial wetland technology, which effectively solves the problem while strengthening the processing capacity. The problem of clogging and recoil sewage in constructed wetlands has been solved.

According to one aspect of the utility model, it proposes a combined device for water restoration based on magnetic separation and constructed wetland technology, the combined device includes:

Flocculation device, filter device (3), artificial wetland (4), aeration fan (5), aeration system (6), clean water tank (7), magnetic separation device (9), backwash water pump (10), sewage Mud dehydrator (13);

Among them, the water enters the flocculation device through pipes or ditches; the water outlet of the flocculation device is connected to the water inlet of the filter device (3) through a pipe; The water inlet of the wetland (4) is connected, and the other road is connected with the outlet of the recoil water pump (10); the aeration system (6) is set in the catchment area at the bottom of the artificial wetland (4), and the air inlet of the aeration system (6) is connected with the aeration The blower fan (5) is connected to the air outlet; the water outlet of the constructed wetland (4) is connected to the water inlet of the clean water pool (7) through a pipeline; the water inlet of the backwash water pump (10) is connected to the bottom of the clean water pool (7) through a pipeline, 10) The water outlet is connected to the water outlet of the filter device (3) through a switching valve; the backwash outlet of the filter device (3) is connected to the water inlet of the magnetic separation device (9); the water outlet of the magnetic separation device (9) is connected to the flocculation device through a pipeline The pipeline connection between the water outlet and the water inlet of the filter device (3), the thick mud outlet of the magnetic separation device (9) is connected with the thick mud inlet of the sludge dehydrator (13); the outlet of the sludge dewaterer (13) passes through The pipeline is connected with the pipeline between the water outlet of the flocculation device and the water inlet of the filter device (3).

The combined device of the utility model can effectively solve the problem that the artificial wetland is easily blocked and the processing capacity is not high in sewage treatment and water body restoration, and the effluent ammonia nitrogen, total phosphorus and COD can all reach the IV of the "Environmental Quality Standard for Surface Water" GB3838-2002 Water-like standard, good treatment effect, high operation stability, and easy maintenance; meanwhile, aquatic plants can be planted on the surface of the wetland to achieve the effects of environment creation and resource recovery.

Description of drawings

Fig. 1 is the structural representation of a complete set of devices in the first embodiment of the utility model:

Fig. 2 is a schematic structural view of a complete set of devices in the second embodiment of the utility model;

1-Water intake, 2-Micro-flocculation device, 3-Filtration device, 4-Constructed wetland, 5-Aeration fan, 6-Aeration system, 7-Clean water tank, 8-Magnetic flocculation device, 9-Magnetic separation device, 10-reverse water pump, 11-magnetic separation water, 12-magnetic separation thick muddy water, 13-sludge dewatering machine, 14-mud cake, 15-water discharge.

detailed description

In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

Example 1

As shown in Figure 1, the utility model proposes a combined device for water restoration based on magnetic separation and constructed wetland technology, the combined device mainly includes: micro-flocculation device 2, filter device 3, constructed wetland 4, aeration fan 5, Aeration system 6, clean water tank 7, magnetic flocculation device 8, magnetic separation device 9, backwash water pump 10, sludge dewatering machine 13.

Among them, the water inlet 1 first enters the micro-flocculation device 2 through a pipeline or a ditch; the water outlet of the micro-flocculation device 2 is connected to the water inlet of the filter device 3 through a pipeline, and the water inlet 1 enters the filter device after passing through the micro-flocculation of the micro-flocculation device 2 3. The filter device 3 is used to remove suspended particles and other pollutants in the water inlet 1 to filter the water inlet 1. The water outlet pipeline is divided into two paths, which are switched by valves. One path is connected to the water inlet of the constructed wetland 4, and the other path It is connected to the water outlet of the recoil pump 10; after the filtered water 1 enters the constructed wetland 4, it performs reactions such as denitrification, phosphorus removal and COD reduction efficiently; the aeration system 6 is set in the catchment area at the bottom of the constructed wetland The air inlet of the air system 6 is connected to the air outlet of the aeration fan 5, and the air outlet of the aeration system 6 is switched by a valve, which can freely choose to aerate the artificial wetland 4 in blocks, so that the artificial wetland 4 forms an aerobic, The environmental conditions of anoxic repeated cycle are favorable for the efficient removal of nitrogen. The water outlet of the constructed wetland 4 is connected to the water inlet of the clear water pool 7 through a pipeline, and the clean water treated by the artificial wetland 4 enters the clean water pool 7 for temporary storage, and can be reused for water replenishment of the environmental water body or other purposes; The water outlet is connected to the bottom of the clean water pool 7 through a pipeline, and the water outlet of the backwash water pump 10 is connected to the water outlet of the filter device 3 through a switching valve; A water outlet for backwashing the filter device 3; the backwash outlet of the filter device 3 is connected to the water inlet of the magnetic flocculation device 8 to perform magnetic flocculation of the backwash sewage; the outlet of the magnetic flocculation device 8 is connected to the magnetic separation device 9 The water inlet is connected, and the magnetic separation device 9 is used to efficiently separate the muddy water from the backwash sewage that has undergone magnetic flocculation; the water outlet 11 of the magnetic separation device 9 is connected to the water outlet of the micro-flocculation device 2 to the water inlet of the filter device 3 through the pipeline The pipeline connection between the magnetic separation device 9 and the thick mud water outlet 12 of the magnetic separation device 9 are connected with the thick mud water inlet 13 of the sludge dewatering machine. The mud cake is transported and disposed of; the outlet of the sludge dehydrator 13 is the same as the outlet of the magnetic separation device 9, and is connected to the pipeline between the outlet of the microflocculation device 2 and the inlet of the filter device 3 through a pipeline.

Preferably, the micro-flocculation device can be replaced by a magnetic flocculation device.

Optionally, the sludge dewatering machine 13 can be flexibly selected according to process requirements such as stacked screw, belt type, plate and frame sludge dewatering machine, so as to ensure that the whole set of equipment has strong adaptability.

Example 2

As shown in Figure 2, a water body restoration combination device based on magnetic separation and constructed wetland technology of the present utility model mainly includes a magnetic flocculation device 2, a filter device 3, a constructed wetland 4, an aeration fan 5, an aeration System 6, clear water tank 7, magnetic separation device 9, backwash water pump 10, sludge dehydrator 13. Among them, the water inlet 1 first enters the magnetic flocculation device 2 through a pipeline or a ditch; the water outlet of the magnetic flocculation device 2 is connected to the water inlet of the filter device 3 through a pipeline; It is connected with the water inlet of the constructed wetland 4, and the other is connected with the water outlet of the recoil pump 10; the aeration system 6 is set in the water catchment area at the bottom of the constructed wetland 4, and the air inlet of the aeration system 6 is connected with the air outlet of the aeration fan 5, and the aeration The air outlet of the system 6 is switched by the valve, which can freely choose to aerate the block wetland; the water outlet 4 of the artificial wetland is connected to the water inlet of the clear water pool 7 through a pipeline; The water outlet of the water pump 10 is connected to the water outlet of the filter device 3 through a switching valve; the backwash outlet of the filter device 3 is connected to the water inlet of the magnetic separation device 9; the water outlet of the magnetic separation device 9 is connected to the water outlet of the magnetic flocculation device 2 to the filter device 3 The pipe connection between the water inlets, the thick mud outlet of the magnetic separation device 9 is connected with the thick mud inlet of the sludge dewatering machine 13; 2 The pipeline connection between the water outlet and the filter device 3 water inlet.

The specific embodiments described above have further described the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above descriptions are only specific embodiments of the utility model and are not intended to limit the utility model. For new models, any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims (6)

1., based on a water remediation combination unit for Magneto separate and Artificial Wetland Techniques, it is characterized in that, this combination unit comprises:

Flocculation plant, filtration unit (3), artificial swamp (4), Aeration fan (5), aerating system (6), clean water basin (7), magnetic separating device (9), recoil water pump (10), sludge dewatering equipment (13);

Wherein, intake and enter flocculation plant by pipeline or irrigation canals and ditches; Flocculation plant water outlet is connected by pipeline between filtration unit (3) water-in; Filtration unit (3) water outlet pipeline divides two-way, is switched by valve, and a road is connected with artificial swamp (4) water-in, and another road is connected with recoil water pump (10) water outlet; Aerating system (6) is arranged at water catchment area, artificial swamp (4) bottom, and aerating system (6) blast inlet is connected with Aeration fan (5) air outlet; Artificial swamp (4) water outlet is connected with clean water basin (7) water-in by pipeline; Recoil water pump (10) water-in is connected with clean water basin (7) bottom by pipeline, and recoil water pump (10) water outlet is connected with filtration unit (3) water outlet by switch valve; Filtration unit (3) back flushing water port is connected to magnetic separating device (9) water-in; Magnetic separating device (9) water outlet is connected by the pipeline between pipeline with flocculation plant water outlet to filtration unit (3) water-in, and magnetic separating device (9) goes out dense muddy water mouth and enters dense muddy water mouth with sludge dewatering equipment (13) and be connected; Sludge dewatering equipment (13) water outlet is connected by the pipeline between pipeline with flocculation plant water outlet to filtration unit (3) water-in.

2. a kind of water remediation combination unit based on Magneto separate and Artificial Wetland Techniques according to claim 1, it is characterized in that, described flocculation plant is tiny flocculation device (2) or magnetic flocculation device (8).

3. a kind of water remediation combination unit based on Magneto separate and Artificial Wetland Techniques according to claim 2, it is characterized in that, when described flocculation plant is tiny flocculation device (2), described combination unit also comprises:

Magnetic flocculation device (8), and filtration unit (3) back flushing water port is connected with magnetic flocculation device (8) water-in, and magnetic flocculation device (8) water outlet is connected with magnetic separating device (9) water-in.

4. a kind of water remediation combination unit based on Magneto separate and Artificial Wetland Techniques according to claim 1, is characterized in that: filtration unit (3) backwashing water carries out mud-water separation by magnetic separating device (9).

5. a kind of water remediation combination unit based on Magneto separate and Artificial Wetland Techniques according to claim 1, is characterized in that:

Described aerating system (6) can pass through valve transfer, carries out piecemeal aeration selectively to artificial swamp (4).

6. a kind of water remediation combination unit based on Magneto separate and Artificial Wetland Techniques according to claim 1, is characterized in that:

Sludge dewatering equipment (13) is folded spiral shell, belt or sheet frame sludge dewatering equipment.