Algal-bacterial symbiotic sewage treatment device and treatment method thereof

Abstract

The application discloses a kind of bacteria and algae symbiosis sewage treatment device, including sewage treatment device ontology, sewage treatment device ontology includes the reaction cavity of outer layer and the filter stirring cavity of inner layer;The top of reaction cavity and outer layer are both provided with light collecting mechanism;Reaction cavity contains immobilized algal ball and good sample granular sludge;Supplemental lighting mechanism, aeration mechanism, filler body and temperature regulating mechanism are arranged in reaction cavity;Light collecting mechanism is used to collect natural light, and natural light is converged into reaction cavity;Supplemental lighting mechanism is used to light for reaction cavity;Aeration mechanism is used to improve gas conductivity;Filler body provides symbiotic environment for microorganisms and algae;Temperature regulating is used to adjust the temperature in sewage treatment device ontology.The application has good denitrification and phosphorus removal treatment capacity for sewage, effectively removes pollutants and heavy metal ions in sewage.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, specifically to a wastewater treatment device and method based on algae-bacteria symbiosis. Background Technology

[0002] Currently, activated sludge is widely used to treat municipal wastewater. Although it has good removal efficiency, it is energy-intensive and has a complex process. In recent years, many studies at home and abroad have shown that algae have great potential in wastewater treatment. Using algae to remediate polluted water bodies can effectively reduce the content of nitrogen, phosphorus, and organic matter in wastewater, enrich and reduce heavy metal ions, and can also analyze and recover the adsorbed heavy metals.

[0003] The use of microalgae for wastewater treatment is attracting increasing attention. Microalgae play a vital role in purifying natural water bodies. They utilize nitrogen, phosphorus, and organic matter in the water as nutrients, light energy as an energy source, and water as an electron acceptor. Through photosynthesis, microalgae grow while simultaneously removing nitrogen, phosphorus, and organic pollutants from the water. Microalgae treatment of domestic wastewater offers significant advantages, including low cost and no secondary pollution.

[0004] However, the microalgae wastewater treatment process uses light energy as its energy source. The intensity of natural light sources varies with time and weather, making it extremely unstable and affecting wastewater treatment efficiency and the stability of the treatment process. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a wastewater treatment device with algae-bacteria symbiosis, which has good denitrification and phosphorus removal capabilities for wastewater and effectively removes pollutants and heavy metal ions from wastewater.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a wastewater treatment device with symbiotic bacteria and algae, comprising a wastewater treatment device body, wherein the wastewater treatment device body includes an outer reaction chamber and an inner filter and stirring chamber; a light-collecting mechanism is provided on the top and outer layer of the reaction chamber; The reaction chamber contains immobilized algae balls and high-quality granular sludge; the reaction chamber is equipped with a supplementary lighting mechanism, an aeration mechanism, a packing material, and a temperature control mechanism. The light-collecting mechanism is used to collect natural light and focus it into the reaction chamber; the supplementary lighting mechanism is used to supplement the lighting of the reaction chamber; the aeration mechanism is used to improve gas conductivity; the packing material provides a symbiotic environment for microorganisms and algae; the temperature control mechanism is used to regulate the temperature inside the wastewater treatment device; the light-collecting mechanism is also used to focus natural light onto the solar photovoltaic panel; the solar photovoltaic panel is connected to the battery unit through an inverter; the battery is used for power supply. The filtration chamber is divided into an upper filtration chamber and a lower stirring chamber by a partition; the partition is provided with through holes; an MBR membrane treatment unit is provided in the filtration chamber; a stirring assembly is provided in the stirring chamber; the stirring chamber is connected to the reaction chamber. The MBR membrane treatment unit is connected to a self-cleaning component; The light-gathering mechanism includes a light-gathering frame and a reflector frame arranged around the body of the wastewater treatment device; a condenser lens is installed on both the light-gathering frame and the reflector frame; the reflector frame is installed on the outer wall of the bottom of the reaction chamber through an angle adjustment component; the light-gathering frame is installed on the outer wall of the bottom of the reflector frame through a rotation component and an angle adjustment component.

[0007] Furthermore, the supplementary lighting mechanism includes a light-emitting diode and a diffuser.

[0008] Furthermore, the aeration mechanism includes several aeration pipes.

[0009] Furthermore, the immobilized algal balls and aerobic granular sludge; the immobilized algal balls are prepared by using a PVA-SA composite carrier and calcium chloride as a fixative to encapsulate microalgae; the microalgae are of three types: common algae, protein-nucleated chlorella, and Scenedesmus tetracaulis.

[0010] Furthermore, the temperature control mechanism includes an air-cooled pipe, a water-cooled pipe, a heating component, and a temperature detection probe.

[0011] The present invention also provides a method for treating wastewater using a wastewater treatment device based on algae-bacteria symbiosis, comprising the following steps: (1) Wastewater pretreatment: Domestic sewage is first introduced into the filter and stirring chamber of the wastewater treatment device body to remove large impurities and then stirred. (2) Light collection adjustment: By adjusting the angle of the light collection frame and the reflector frame in real time, natural light is focused into the reaction chamber; (3) Algae symbiotic treatment: The reaction chamber contains a bacterial-algae symbiotic system and a water treatment agent is added to the reaction chamber for wastewater treatment. During the treatment process, the water quality is monitored in real time, and the temperature and aeration are adjusted in a timely manner, and supplemental lighting is carried out.

[0012] The beneficial effects of this invention are as follows: 1) This invention combines a bacterial-algae symbiotic system with a water treatment agent to treat wastewater. It has a good denitrification and phosphorus removal capacity for wastewater, effectively removing pollutants and heavy metal ions from wastewater and reducing environmental pollution.

[0013] 2) This invention achieves a light-tracking effect by setting up a light-collecting mechanism, maximizing the collection of natural light at different times of the day, and providing sufficient energy for microalgae treatment.

[0014] 3) This invention solves the problem of instability caused by the change in the intensity of natural light sources with time and weather by setting up supplementary lighting components. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a schematic diagram of the structure of the present invention. Detailed Implementation

[0017] The technical solution of the present invention will be clearly and completely described below through specific embodiments.

[0018] refer to Figure 1 The present invention provides a wastewater treatment device for algae symbiosis, comprising a wastewater treatment device body, wherein the wastewater treatment device body includes an outer reaction chamber 1 and an inner filter stirring chamber 2; a light collecting mechanism 3 is provided on the top and outer layer of the reaction chamber 1. The reaction chamber 1 in this embodiment includes immobilized algae balls and aerobic granular sludge; the reaction chamber 1 is equipped with a supplementary lighting mechanism 11, an aeration mechanism 12, a packing body 13, and a temperature control mechanism 14; The light-collecting mechanism in this embodiment is used to collect natural light and focus it into the reaction chamber 1; the supplementary lighting mechanism is used to supplement the light in the reaction chamber 1; the aeration mechanism is used to improve the gas conductivity; the packing material 13 provides a symbiotic environment for microorganisms and algae; and the temperature control mechanism is used to regulate the temperature inside the wastewater treatment device.

[0019] Microalgae, as described in this invention, are a type of low-level single-celled microorganism with tiny morphology, diverse forms, strong adaptability, and wide distribution. They are primary producers in the aquatic ecological cycle system and play an important role in the environmental remediation and purification of polluted water bodies. Microalgae have a rapid growth and metabolism rate, and significantly remove nitrogen, phosphorus, and organic matter from eutrophic water bodies. Microalgae can also fix carbon dioxide to produce various products such as food, feed, energy, and bioactive substances.

[0020] Microalgae can utilize carbon dioxide and absorb abundant N and P nutrients in wastewater during photosynthesis. Through the chloroplasts of algal cells, they can synthesize the cellular substances they need, complete the entire chemical reaction process, and release a certain amount of oxygen.

[0021] The main inorganic nitrogen sources in wastewater are ammonia nitrogen and nitrate nitrogen, which are present in very high amounts. Microalgae use ammonia nitrogen and nitrate nitrogen to synthesize nutrients such as amino acids and proteins needed for their growth. However, excessively high concentrations of ammonia nitrogen in wastewater can inhibit the growth and metabolism of algae, affecting their absorption and degradation of nutrients.

[0022] Microalgae cells convert absorbed phosphates into phospholipids and other substances through oxidative phosphorylation, photosynthetic phosphorylation, and substrate-level phosphorylation. Through photosynthesis, they raise the pH of wastewater, effectively promoting the volatilization of ammonia nitrogen in pulmonary edema and the precipitation of phosphates, thereby indirectly removing nitrogen and phosphorus from wastewater.

[0023] Polysaccharides, proteins, and phospholipids on the surface of microalgal cell walls provide algae with a large number of functional groups that can bind to heavy metal ions, such as carboxyl, hydroxyl, amino, and phosphate groups, which can actively and passively support the removal of heavy metals.

[0024] In this embodiment, the filter chamber 2 is divided into an upper filter chamber and a lower stirring chamber by a partition; the partition is provided with through holes; an MBR membrane treatment unit is provided in the filter chamber; and a stirring assembly is provided in the stirring chamber. The stirring chamber is connected to the reaction chamber, with an outlet at the bottom of the reaction chamber and an inlet at the top of the filter chamber.

[0025] In this embodiment, large particulate impurities, such as plastics, are removed from the wastewater before it is treated.

[0026] The MBR membrane treatment unit is connected to a self-cleaning component, which can perform regular cleaning to improve filtration efficiency.

[0027] The light-gathering mechanism 3 in this embodiment includes a light-gathering frame and a reflector frame disposed around the body of the wastewater treatment device; both the light-gathering frame and the reflector frame are equipped with a condenser lens; the reflector frame is installed on the outer wall of the bottom of the reaction chamber 1 through an angle adjustment component; the light-gathering frame is installed on the outer wall of the reflector frame through a rotation component and an angle adjustment component.

[0028] This embodiment collects natural light through a light-collecting mechanism, which can provide more abundant natural light and provide energy for photosynthesis.

[0029] The light-gathering mechanism uses a light-gathering frame and a reflector to adjust the angle of the light-gathering frame and the reflector according to the different positions of the sun, so as to better gather natural light and refract the natural light into the reaction chamber through the reflector.

[0030] The light-gathering mechanism at the top of the reaction chamber does not include a reflector; it uses a light-gathering mirror to focus the light source into the reaction chamber.

[0031] The reaction chamber sidewall is mounted on an angle adjustment assembly, which is mounted on a rotation assembly.

[0032] Preferably, the light-collecting mechanism in this embodiment is also used to concentrate natural light onto the solar photovoltaic panel; the solar photovoltaic panel is connected to the battery unit via an inverter; the battery is used for power supply. Solar photovoltaic panels are installed on the outer side of the light-collecting frame. After the rotating component rotates 180 degrees, the light-collecting frame is adjusted according to the sun's position, and the photovoltaic panel converts solar energy into electrical energy for storage and power supply.

[0033] The supplementary lighting mechanism 11 in this embodiment includes a light-emitting diode and a diffuser.

[0034] The aeration mechanism 12 in this embodiment includes several aeration pipes.

[0035] The immobilized algal balls and aerobic granular sludge in this embodiment; the immobilized algal balls are prepared by using PVA-SA composite carrier and calcium chloride as fixative to encapsulate microalgae; the microalgae are of three types: common microalgae, protein-nucleated microalgae, and Scenedesmus tetracaulis.

[0036] The temperature control mechanism 14 in this embodiment includes an air-cooled pipe, a water-cooled pipe, a heating component, and a temperature detection probe.

[0037] The packing material of the present invention is a honeycomb-shaped inclined tube packing material.

[0038] The present invention also provides a method for treating wastewater using a wastewater treatment device based on algae-bacteria symbiosis, comprising the following steps: (1) Wastewater pretreatment: Domestic sewage is first introduced into the filter and stirring chamber 2 of the wastewater treatment device body to remove large impurities and then stirred. (2) Light collection adjustment: By adjusting the angle of the light collection frame and the reflector frame in real time, natural light is focused into the reaction chamber; (3) Algae symbiotic treatment: The reaction chamber 1 contains a bacterial-algae symbiotic system and a water treatment agent is added to the reaction chamber for sewage treatment. During the treatment process, the water quality is monitored in real time, and the temperature and aeration are adjusted in a timely manner, and supplemental lighting is carried out.

[0039] This invention employs three types of algae: common algae, spirulina-core Chlorella, and Scenedesmus tetracauda. These algae exhibit good removal effects on CODcr, NH3-N, and TP. By using immobilized microalgae balls, the microalgae can be recovered and recycled, reducing costs. This invention combines a bacterial-algae symbiotic system with a water treatment agent to treat wastewater, demonstrating good nitrogen and phosphorus removal capabilities. It effectively removes pollutants and heavy metal ions from wastewater, reducing environmental pollution.

[0040] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art can make various modifications or equivalent substitutions to the present invention within the scope of its essence and protection. Such modifications or equivalent substitutions should also be considered to fall within the protection scope of the present invention.

Claims

1. A wastewater treatment device based on a symbiotic relationship between bacteria and algae, comprising a wastewater treatment device body, characterized in that: The wastewater treatment device body includes an outer reaction chamber (1) and an inner filter and stirring chamber (2); both the top and the outer layer of the reaction chamber (1) are equipped with light-collecting mechanisms (3). The reaction chamber (1) includes immobilized algae balls and aerobic granular sludge; the reaction chamber (1) is equipped with a supplementary lighting mechanism (11), an aeration mechanism (12), a packing body (13) and a temperature control mechanism (14). The light-collecting mechanism is used to collect natural light and focus it into the reaction chamber (1); the supplementary lighting mechanism is used to supplement the light in the reaction chamber (1); the aeration mechanism (12) is used to improve gas conductivity; the packing material (13) provides a symbiotic environment for microorganisms and algae; the temperature control mechanism (14) is used to regulate the temperature inside the wastewater treatment device; the light-collecting mechanism (3) is also used to focus natural light onto the solar photovoltaic panel; the solar photovoltaic panel is connected to the battery unit through an inverter; the battery is used for power supply. The filter stirring chamber (2) is divided into an upper filter chamber and a lower stirring chamber by a partition; the partition is provided with through holes; an MBR membrane treatment unit is provided in the filter chamber; a stirring assembly is provided in the stirring chamber; the stirring chamber is connected to the reaction chamber. The MBR membrane treatment unit is connected to a self-cleaning component; The light-gathering mechanism (3) includes a light-gathering frame and a reflector frame arranged around the body of the sewage treatment device; a condenser lens is installed on both the light-gathering frame and the reflector frame; the reflector frame is installed on the bottom outer wall of the reaction chamber (1) through an angle adjustment component; the light-gathering frame is installed on the bottom outer wall of the reflector frame through a rotation component and an angle adjustment component.

2. The wastewater treatment device with symbiotic bacteria and algae according to claim 1, characterized in that: The supplementary lighting mechanism (11) includes a light-emitting diode and a diffuser.

3. The wastewater treatment device with symbiotic bacteria and algae according to claim 1, characterized in that: The aeration mechanism (12) includes several aeration pipes.

4. The wastewater treatment device with symbiotic bacteria and algae according to claim 1, characterized in that: The immobilized algal balls and aerobic granular sludge constitute a bacterial-algal symbiotic system; the immobilized algal balls are prepared by using a PVA-SA composite carrier and calcium chloride as a fixative to encapsulate microalgae; the microalgae are of three types: common algae, Chlorella proteoglycans, and Scenedesmus tetracaulis.

5. The wastewater treatment device with symbiotic bacteria and algae according to claim 1, characterized in that: The temperature control mechanism (14) includes an air-cooled pipe, a water-cooled pipe, a heating component, and a temperature detection probe.

6. A method for treating wastewater using the wastewater treatment device with bacterial-algae symbiosis as described in claim 1, characterized in that: Includes the following steps: (1) Wastewater pretreatment: Domestic sewage is first introduced into the filter and stirring chamber (2) of the main body of the wastewater treatment device to remove large impurities and then stirred. (2) Light collection adjustment: By adjusting the angle of the light collection frame and the reflector frame in real time, natural light is focused into the reaction chamber; (3) Algae-bacteria symbiotic treatment: The reaction chamber (1) contains an algae-bacteria symbiotic system and a water treatment agent is added to the reaction chamber for wastewater treatment. During the treatment process, the water quality is monitored in real time, and the temperature and aeration are adjusted in a timely manner, and supplemental lighting is carried out.

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