Light-dark alternating folded plate type raceway pond photobioreactor for sewage treatment

Abstract

The utility model relates to a light-dark alternating folded plate type raceway pond photobioreactor for sewage treatment, which comprises an S-shaped bent raceway pond, a water inlet of the raceway pond is connected with a water inlet pump, a water outlet of the raceway pond is connected with a water storage barrel in series, and the outer surface of the raceway pond is a shading layer. A folded plate reaction area and a light-dark alternating reaction area are sequentially arranged in the runway pond from bottom to top, the folded plate reaction area is provided with a plurality of folded plates arranged at intervals in the length direction of the runway pond, the light-dark alternating reaction area is provided with simulation light sources and a plurality of light shielding plates, and the simulation light sources are arranged above the light shielding plates at intervals. The shading plates are arranged in the horizontal direction, and light-transmitting intervals are arranged between the shading plates. The folded plate reaction area promotes homogenization of algae liquid in the raceway pond and substances in sewage, light-dark alternating irradiation is carried out on microalgae in combination with shading plates arranged at intervals in the light-dark alternating reaction area and light source irradiation, the photosynthesis and breathing efficiency of the microalgae is improved, treatment of refractory pollutants by the microalgae is promoted, and conversion and utilization of the pollutants are enhanced.

Description

TECHNICAL FIELD

[0001] The present application relates to the sewage treatment technical field, especially to a light and dark alternating folded plate runway pool photobioreactor for sewage treatment. BACKGROUND

[0002] With the rapid development of China's economy and urbanization construction, the urban sewage discharge is high, and the low-carbon treatment and resource utilization of pollutants in sewage become the focus of attention for realizing sewage resource recovery. As a common single-cell microorganism in water, microalgae has the characteristics of short growth cycle, fast growth rate, high photosynthetic efficiency and high nitrogen and phosphorus utilization rate, and the existing biological reaction tank removes low-concentration nitrogen and phosphorus in sewage by taking microalgae as the main body for biological treatment, and reduces the operation cost. However, the microalgae sewage biological treatment technology is easily affected by environmental conditions, and the light bioreactor has low adaptability, although it can realize the conversion and utilization of pollutants in wastewater, but the treatment effect of difficult-to-degrade pollutants such as antibiotics, pesticides and hormones is poor, and the resource utilization rate of pollutants in wastewater is low. Therefore, it is an urgent technical problem to design a light and dark alternating folded plate runway pool photobioreactor for sewage treatment which can optimize the treatment effect of difficult-to-degrade pollutants and improve the resource utilization rate of pollutants. SUMMARY

[0003] The present application provides a light and dark alternating folded plate runway pool photobioreactor for sewage treatment.

[0004] The technical scheme of the present application is a light and dark alternating folded plate runway pool photobioreactor for sewage treatment, comprising an S-shaped folded runway pool, a water inlet of the runway pool is connected with a water inlet pump, and a water outlet is connected with a water storage barrel in series, an outer surface of the runway pool is a light shielding layer, and inside the runway pool is provided with a folded plate reaction zone and a light and dark alternating reaction zone from bottom to top in sequence, the folded plate reaction zone is provided with a plurality of folded plates arranged along the length direction of the runway pool at intervals, the light and dark alternating reaction zone is provided with a simulation light source and a plurality of light shielding plates, the simulation light source is arranged above the light shielding plates at intervals, and the light shielding plates are arranged along the horizontal direction and are provided with light transmission intervals therebetween.

[0005] After the above structure, the microalgae-containing algal liquid and the sewage are pressurized into the runway pool by the water inlet pump, mixed in the S-shaped bending runway pool, the contact time of the microalgae and the pollutants is prolonged, the low-concentration nitrogen and phosphorus and the refractory pollutants in the sewage are treated by using the photosynthesis and respiration of the microalgae; the baffle plates are arranged at intervals along the water flow direction of the runway pool in the baffle plate reaction zone below the runway pool, the algal liquid flowing through the baffle plates generates obvious turbulence, the algal liquid and the substances in the sewage are fully mixed and homogenized, and the effect of the microalgae on treating the sewage is improved; when the mixed liquid of the algal liquid and the sewage flows in the runway pool, the mixed liquid alternately passes through the light-shielding plate and the light-transmitting interval, receives the irradiation of the simulated light source at the light-transmitting interval, and cannot receive the irradiation under the light-shielding plate, so that the photosynthesis efficiency and the respiration efficiency of the microalgae are improved, and the conversion and utilization of the pollutants by the microalgae are promoted; the baffle plate reaction zone promotes the homogenization of the algal liquid and the substances in the sewage in the runway pool, the light-shielding plate is arranged at intervals in the light-dark alternating reaction zone, the light source irradiates the microalgae in the light-dark alternating manner, the photosynthesis and respiration efficiency of the microalgae is improved, the microalgae treat the low-concentration nitrogen and phosphorus and the refractory pollutants, and the conversion and utilization of the pollutants are strengthened.

[0006] As a further improvement of the utility model, the inside of the runway pool is equipped with several circulating pumps, and the outside is equipped with a driving motor, the driving motor penetrates into the runway pool to connect the circulating pumps for cooperation and linkage, and the driving motor is equipped with a controller for driving each circulating pump to rotate independently.

[0007] After the above structure, the driving motor drives the circulating pumps in the runway pool to rotate, promotes the mixed liquid of the microalgae and the sewage to flow in the runway pool, strengthens the turbulence intensity of the algal liquid flowing to the baffle plates, and further promotes the mixing and homogenization of the algal liquid and the sewage.

[0008] As a further improvement of the utility model, the first end of the runway pool is provided with a water distributor, and the water distributor is equipped with a water inlet pipe connected with the water inlet pump.

[0009] After the above structure, the water distributor is arranged at the first end of the runway pool, so that the algal liquid and the sewage entering the runway pool can be more uniformly distributed in the runway pool, and the two can be more easily mixed and homogenized.

[0010] As a further improvement of the utility model, a monitoring assembly is fixed in the runway pool, and the monitoring assembly comprises a temperature controller and a liquid level controller.

[0011] After the above structure, the temperature controller and the liquid level controller are arranged in the runway pool, so that the operation temperature of the reactor can be detected and controlled in real time, the temperature change can be found in time to make adjustment, and the photosynthesis and respiration efficiency of the microalgae is avoided.

[0012] As a further improvement of the utility model, the last end of the runway pool is provided with a reflux pipe, and the reflux pipe is communicated with the first end of the runway pool.

[0013] After the above structure, the sewage is circulated back to the first end of the runway pool through the return pipe, further prolongs the biological residence time of the microalgae in the runway pool, and promotes the treatment effect of the reactor on the pollutants in the sewage. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 The runway pool transverse section structure schematic view is shown.

[0015] Figure 2 The A part circulating pump schematic view is shown.

[0016] Figure 3 The B part runway pool two end structure schematic view is shown.

[0017] Figure 4 The runway pool longitudinal section structure schematic view is shown.

[0018] Figure 5 The runway pool internal circulating pump installation structure schematic view is shown.

[0019] 1-runway pool, 2-folded plate reaction area, 3-light and dark alternating reaction area, 4-folded plate, 5-shading plate, 6-circulating pump, 7-driving motor, 8-controller, 9-water distributor, 10-water inlet pipe, 11-monitoring assembly, 12-return pipe. DETAILED DESCRIPTION

[0020] As Figures 1-5 The utility model discloses a light and dark alternating folded plate runway pool photobioreactor for sewage treatment, including S shape bending's runway pool 1, the water inlet of this runway pool 1 is connected with water inlet pump, and the water outlet is connected with water storage bucket in series, the outer surface of runway pool 1 is shading layer, and the inside is equipped with folded plate reaction area 2 and light and dark alternating reaction area 3 from bottom to top in proper order, folded plate reaction area 2 is equipped with the interval arrangement of several folded plates 4 along runway pool 1 length direction, light and dark alternating reaction area 3 is equipped with simulation light source and several shading plates 5, the simulation light source is set on shading plate 5 top, and the shading plate 5 is arranged along the horizontal direction and is equipped with the light transmission interval between them.

[0021] The algal liquid containing microalgae and sewage are pressurized into the runway pool 1 by the water inlet pump, mixed in the S-shaped bending runway pool 1, the contact time of the microalgae and the pollutants is prolonged, the low concentration nitrogen and phosphorus and the refractory pollutants in the sewage are treated by the photosynthesis and respiration of the microalgae; the baffle plates 4 are arranged at intervals along the water flow direction of the runway pool 1 in the baffle reaction area 2 below the runway pool 1, the turbulent flow is generated when the algal liquid flows through the baffle plates 4, the algal liquid and the substances in the sewage are fully mixed and homogenized, and the effect of the microalgae on treating the sewage is improved; when the mixed liquid of the algal liquid and the sewage flows in the runway pool 1, the mixed liquid alternately passes through the light-shielding plate 5 and the light-transmitting interval, receives the irradiation of the simulated light source at the light-transmitting interval, and cannot receive the irradiation under the light-shielding plate 5, so that the photosynthesis efficiency and the respiration efficiency of the microalgae are improved, and the conversion and utilization of the pollutants by the microalgae are promoted; the baffle reaction area 2 promotes the homogenization of the substances in the algal liquid and the sewage in the runway pool 1, the light-shielding plate 5 arranged at intervals in the light-dark alternating reaction area 3, and the light source irradiation alternately irradiate the microalgae, so that the photosynthesis and respiration efficiency of the microalgae is improved, the microalgae treat the low concentration nitrogen and phosphorus and the refractory pollutants, and the conversion and utilization of the pollutants are strengthened.

[0022] The inside of the runway pool 1 is provided with a plurality of circulating pumps 6, and the outside is provided with a driving motor 7 which penetrates into the runway pool 1 to connect and cooperate with the circulating pumps 6, and the driving motor 7 is provided with a controller 8 for driving each circulating pump 6 to rotate independently.

[0023] The driving motor 7 drives the circulating pumps 6 in the runway pool 1 to rotate, promotes the mixed liquid of the microalgae and the sewage to flow in the runway pool 1, strengthens the turbulent flow intensity of the algal liquid flowing to the baffle plates 4, and further promotes the mixing and homogenization of the algal liquid and the sewage.

[0024] The first end of the runway pool 1 is provided with a water distributor 9, and the water distributor 9 is provided with a water inlet pipe 10 connected with the water inlet pump.

[0025] The water distributor 9 is arranged at the first end of the runway pool 1, so that the algal liquid and the sewage entering the runway pool 1 can be more uniformly distributed in the runway pool 1, and the two can be more easily mixed and homogenized.

[0026] The monitoring assembly 11 is fixed in the runway pool 1, and the monitoring assembly 11 includes a temperature controller and a liquid level controller 8.

[0027] The temperature controller and the liquid level controller 8 are arranged in the runway pool 1, so that the operating temperature of the reactor can be detected and controlled in real time, the temperature change can be found in time to make adjustment, and the photosynthesis and respiration efficiency of the microalgae is avoided.

[0028] The end of the runway pool 1 is provided with a reflux pipe 12 which is communicated with the first end of the runway pool 1.

[0029] The sewage is circulated back to the head end of the raceway pond 1 through the backflow pipe 12, further prolongs the biological residence time of the microalgae in the raceway pond 1, and promotes the treatment effect of the reactor on the pollutants in the sewage.

Claims

1. A light-dark alternating folded plate runway pool photobioreactor for sewage treatment, comprising an S-shaped folded runway pool (1), a water inlet pump is connected to a water inlet of the runway pool (1), and a water storage bucket is connected in series to a water outlet, characterized in that: The outer surface of the runway pool (1) is a light shielding layer, and the inside is sequentially provided with a folded plate reaction zone (2) and a light-dark alternating reaction zone (3) from bottom to top. The folded plate reaction zone (2) is provided with a plurality of folded plates (4) arranged at intervals along the length direction of the runway pool (1). The light-dark alternating reaction zone (3) is provided with a simulated light source and a plurality of light shielding plates (5). The simulated light source is arranged at intervals above the light shielding plates (5). The light shielding plates (5) are arranged in the horizontal direction and are provided with light transmission intervals therebetween.

2. The alternating light-dark folded plate raceway pond photobioreactor for wastewater treatment according to claim 1, characterized in that: The inside of the runway pool (1) is provided with a plurality of circulating pumps (6), and the outside is provided with a driving motor (7). The driving motor (7) penetrates into the runway pool (1) and is connected with the circulating pumps (6) to cooperate and link. The driving motor (7) is provided with a controller (8) for driving each circulating pump (6) to rotate independently.

3. The alternating light-dark folded plate raceway pond photobioreactor for wastewater treatment according to claim 1, wherein: The first end of the runway pool (1) is provided with a water distributor (9). The water distributor (9) is provided with a water inlet pipe (10) connected with a water inlet pump.

4. The alternating light-dark folded plate raceway pond photobioreactor for wastewater treatment according to claim 1, wherein: The runway pool (1) is fixedly provided with a monitoring assembly (11). The monitoring assembly (11) comprises a temperature controller and a liquid level controller (8).

5. The alternating light-dark folded plate raceway pond photobioreactor for wastewater treatment according to claim 1, wherein: The end of the runway pool (1) is provided with a backflow pipe (12). The backflow pipe (12) is communicated with the first end of the runway pool (1).

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