Carbon source production system

Abstract

The utility model provides a carbon source production system, which is characterized by comprising a filter group, the circulating tank is connected with the filter group through a first conveying pipe; the membrane assembly is provided with a liquid inlet pipe and a liquid outlet pipe, and the circulating tank is provided with a second conveying pipe connected with the liquid inlet pipe; the clear liquid tank is connected with the liquid outlet pipe through a third conveying pipe; the CIP tank is provided with a fourth conveying pipe and is respectively connected with the liquid inlet pipe and the circulating tank; the liquid inlet pipe is connected with a backflushing tank used for air inlet and air outlet. A biomass carbon source obtained by filtering through a filter group and a membrane assembly is stored in a clear liquid tank.

Description

Technical Field

[0001] This utility model relates to a carbon source production system. Background Technology

[0002] my country's urban sewage production is large and its composition complex. Due to aging and incomplete sewage pipe networks in many towns, coupled with lagging drainage network construction, sewage collection rates are low. Furthermore, pipe network construction is also affected by the renovation of old urban pipe networks and the development of enterprises in many small towns, all of which have led to delays in the construction of sewage treatment plants. This results in many urban sewage systems having low organic matter content and high nitrogen and phosphorus content, especially in some southern cities with abundant rainfall. Sewage collection is often done by connecting sewage to small rivers and ditches, directly introducing it into sewage treatment plants, which further reduces the organic matter content. Many urban sewage systems exhibit low organic matter concentration, high nitrogen content, and low COD / TN ratios. Low organic matter concentration (COD < 200 mg / L) and low carbon-to-nitrogen ratio (COD / TN < 8) are considered typical characteristics of low-carbon urban sewage.

[0003] For the denitrification process of domestic sewage with a low carbon-to-nitrogen ratio, there are generally four methods: First, improve conventional treatment processes to make full use of the carbon source in the sewage; second, carry out anaerobic fermentation of primary sedimentation tank sludge or excess sludge so that the supernatant can be used as a carbon source for denitrification; third, study new theories and processes to reduce the demand for carbon sources in biological denitrification; and fourth, research and develop green, economical, and efficient carbon sources to meet the carbon-to-nitrogen ratio required in the denitrification process.

[0004] Based on the first three methods, researchers both domestically and internationally have developed a series of novel nitrogen removal technologies, such as "return sludge denitrification biological nitrogen and phosphorus removal technology," "simultaneous nitrification and denitrification operation technology of oxidation ditch system," and "combined process technology for total nitrogen removal." Although these new biological nitrogen removal technologies have broad research scope and development prospects, there are still many difficulties in their practical engineering applications: for example, the implementation conditions are difficult to control; there are still uncertainties in the screening and acclimatization of simultaneous nitrification and denitrification bacteria; and when the influent organic matter concentration is too low, the improvement in nitrogen removal efficiency by the new processes is not significant.

[0005] Therefore, given the objective reality that it is difficult to make up for the carbon source demand through wastewater treatment process improvements and the policy background of upgrading and renovation, researching and developing green, economical, and efficient external carbon sources has become the key to denitrification of domestic wastewater with low carbon-to-nitrogen ratio in my country.

[0006] Currently, the most commonly used external carbon sources nationwide are small-molecule substances such as sodium acetate, glucose, and methanol. These traditional external carbon sources are effective electron donors during denitrification, making them suitable for wastewater treatment. However, increasing demand in recent years has led to a continuous rise in their prices, increasing wastewater treatment plant costs. On the other hand, methanol is flammable and explosive, and expensive; sodium acetate has low effective BOD content and is also expensive; and glucose can cause sludge bulking and water quality incidents with long-term use. These factors contribute to the inability to guarantee stable water quality compliance, posing certain environmental risks and high costs. Therefore, it is necessary to seek new composite carbon sources that are suitable for microbial absorption and growth, thereby improving the microbial population, biological phase, and sludge properties of wastewater treatment systems. However, existing processes cannot directly produce composite carbon sources. To enable large-scale production of new carbon source supplements, new process systems need to be developed. Utility Model Content

[0007] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a carbon source production system that uses a filter group and membrane module to perform filtration to obtain biomass carbon source, which is then stored in a clear liquid tank.

[0008] The objective of this utility model can be achieved through the following technical solution: a carbon source production system, characterized in that it includes:

[0009] Filter bank;

[0010] A circulation tank, which is connected to the filter assembly via a first delivery pipe;

[0011] A membrane module, wherein the membrane module is provided with an inlet pipe and an outlet pipe, and the circulation tank is provided with a second delivery pipe connected to the inlet pipe;

[0012] The clear liquid tank is connected to the outlet pipe via a third delivery pipe;

[0013] The CIP tank has a fourth delivery pipe that is connected to the inlet pipe and the circulation tank respectively;

[0014] The inlet pipe is connected to a backflushing tank for air intake and exhaust.

[0015] Furthermore, the filter assembly includes two interconnected self-cleaning filters.

[0016] Furthermore, a water supply pipe is connected to the circulation tank.

[0017] Furthermore, a discharge pipe is connected to the clear liquid tank.

[0018] Furthermore, the CIP tank is also equipped with a drain pipe for discharging waste liquid.

[0019] Furthermore, the membrane assembly includes a first membrane and a second membrane, which are interconnected.

[0020] Furthermore, pressure gauges are provided on the first delivery pipe, the second delivery pipe, the third delivery pipe, the fourth delivery pipe, the inlet pipe, and the outlet pipe.

[0021] Compared with the prior art, the advantages of this application are: it obtains biomass carbon source and stores it in the clear liquid tank through filtration by filter group and membrane module. Attached Figure Description

[0022] Figure 1 This is a system flowchart;

[0023] Figure 2 This is a schematic diagram of the system structure;

[0024] Figure 3 This is a schematic diagram of the system structure from another perspective;

[0025] In the diagram, 1 is the clear liquid tank; 11 is the discharge pipe; 2 is the circulation tank; 21 is the first delivery pipe; 22 is the second delivery pipe; 3 is the CIP tank; 31 is the drain pipe; 32 is the fourth delivery pipe; 33 is the third delivery pipe; 4 is the backflushing tank; 51 is the first membrane; 52 is the second membrane; 53 is the inlet pipe; 54 is the outlet pipe; and 6 is the self-cleaning filter. Detailed Implementation

[0026] The following are specific embodiments of the present invention, and the technical solution of the present invention will be further described in conjunction with the accompanying drawings.

[0027] like Figure 1-3 As shown, a carbon source production system is characterized by comprising:

[0028] Filter bank;

[0029] The circulation tank 2 is connected to the filter assembly via the first delivery pipe 21;

[0030] The membrane module is provided with an inlet pipe 53 and an outlet pipe 54, and the circulation tank 2 is provided with a second delivery pipe 22 connected to the inlet pipe 53.

[0031] The clear liquid tank 1 is connected to the liquid outlet pipe 54 via the third delivery pipe 33;

[0032] CIP tank 3 has a fourth delivery pipe 32 and is connected to the liquid inlet pipe 53 and the circulation tank 2 respectively;

[0033] The liquid inlet pipe 53 is connected to a backflushing tank 4 for air intake and exhaust.

[0034] Furthermore, the filter assembly includes two interconnected self-cleaning filters 6.

[0035] Furthermore, a water supply pipe is connected to the circulating tank 2.

[0036] Furthermore, a discharge pipe 11 is connected to the clear liquid tank 1 for the discharge and collection of the carbon source.

[0037] Furthermore, the CIP tank 3 is also equipped with a drain pipe 31 for discharging waste liquid.

[0038] Furthermore, the membrane assembly includes a first membrane 51 and a second membrane 52, which are in communication with each other. The first membrane 51 and the second membrane 52 are used to filter out the desired carbon source.

[0039] Furthermore, pressure gauges are installed on the first delivery pipe 21, the second delivery pipe 22, the third delivery pipe 33, the fourth delivery pipe 32, the inlet pipe 53, and the outlet pipe 54 to detect the pipeline pressure.

[0040] This embodiment describes how the fermentation broth is initially cleaned and filtered through a self-cleaning filter 6, then transported to a circulation tank 2 via a first delivery pipe 21. The circulation tank can be replenished with water (purified water) via a water replenishment pipe. The broth then enters the first membrane 51 and the second membrane 52 through a second delivery pipe 22 and an inlet pipe 53 for further filtration. Simultaneously, the backwash tank 4 is activated to perform air intake and exhaust, ensuring stable air pressure within the pipeline during the process. The filtered biomass carbon source is transported to a clear liquid tank 1 for storage via an outlet pipe 54 and a third delivery pipe 33. The fermentation broth from which the carbon source is filtered is returned to the circulation tank, replenished with water, and then filtered again. When the membrane module becomes clogged, chemicals (sodium hypochlorite), washing caustic soda flakes, and replenishing water are added for cleaning. The cleaning solution enters the membrane module through a fourth delivery pipe 32 to clean it. The cleaning waste liquid in the membrane module is discharged through an outlet pipe 54 and then through a CIP tank 3. This embodiment mainly obtains the biomass carbon source through a circulation filtration method, and also has a cleaning pipeline for adding chemicals and water.

[0041] The above-described technical solution of this utility model addresses the problem that existing technical solutions are too simplistic and provides a solution that is significantly different from existing technologies. The parts not covered in this application's technical solution are the same as or can be implemented using existing technologies, and will not be described in detail here.

[0042] The technical solutions in the above embodiments have clearly and completely described the content of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

Claims

1. A carbon source production system, characterized in that, include: Filter bank; A circulation tank, which is connected to the filter assembly via a first delivery pipe; A membrane module, wherein the membrane module is provided with an inlet pipe and an outlet pipe, and the circulation tank is provided with a second delivery pipe connected to the inlet pipe; The clear liquid tank is connected to the outlet pipe via a third delivery pipe; The CIP tank has a fourth delivery pipe that is connected to the inlet pipe and the circulation tank respectively; The inlet pipe is connected to a backflushing tank for air intake and exhaust.

2. The carbon source production system according to claim 1, characterized in that: The filter assembly includes two interconnected self-cleaning filters.

3. The carbon source production system according to claim 1, characterized in that: The circulating tank is connected to a water supply pipe.

4. A carbon source production system according to claim 1, characterized in that: The clear liquid tank is connected to a discharge pipe.

5. A carbon source production system according to claim 1, characterized in that, The CIP tank is also equipped with a drain pipe for discharging waste liquid.

6. A carbon source production system according to claim 1, characterized in that, The membrane assembly includes a first membrane and a second membrane, which are interconnected.

7. A carbon source production system according to claim 6, characterized in that, Pressure gauges are installed on the first, second, third, and fourth delivery pipes, as well as the inlet and outlet pipes.

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