阅读说明：本技术 一种用于高盐废水处理的半开放式微生物发酵设备及方法 (Semi-open type microbial fermentation equipment and method for high-salinity wastewater treatment ) 是由 李晓光 赵建芳 沙蓓蓓 辛旺 高学峰 刘轩彤 高鲁兵 姜竹彬 任宪诚 于 2019-09-17 设计创作，主要内容包括：本发明公开了一种用于高盐废水处理的半开放式微生物发酵设备及方法,其中：所述用于高盐废水处理的半开放式微生物发酵设备包括废水pH调节系统、培养基配制系统、扩大发酵系统和温度控制系统,以高盐废水配制发酵原液,配合带有培养基的营养液,用以培养专门用于高盐废水生化处理的微生物,提高了最终发酵液中微生物的活性和成活率,进而使得高盐废水处理效率大幅度提高。(The invention discloses semi-open microbial fermentation equipment and a method for high-salinity wastewater treatment, wherein the semi-open microbial fermentation equipment comprises the following steps: the semi-open type microbial fermentation equipment for high-salinity wastewater treatment comprises a wastewater pH adjusting system, a culture medium preparation system, an enlarged fermentation system and a temperature control system, wherein a fermentation stock solution is prepared from high-salinity wastewater, and a nutrient solution with a culture medium is matched for culturing microorganisms specially used for biochemical treatment of the high-salinity wastewater, so that the activity and the survival rate of the microorganisms in the final fermentation broth are improved, and further the treatment efficiency of the high-salinity wastewater is greatly improved.)

1. a semi-open microbial fermentation equipment for high salinity wastewater treatment, characterized by comprising a wastewater pH adjusting system (1), a culture medium preparation system (2), an amplification fermentation system (3) and a temperature control system (4), wherein:

The wastewater pH adjusting system (1) comprises a high-salinity wastewater pool (11), a pipeline mixer (12) and a pH adjusting tank (13), wherein the high-salinity wastewater pool (11) is used for storing high-salinity wastewater to be treated, a raw water pump (14) is arranged in the high-salinity wastewater pool (11), a water outlet of the raw water pump (14) is connected with a water inlet of the pipeline mixer (12) through a wastewater pipeline (15), an acid outlet of an acid storage device is connected with an acid inlet of the pipeline mixer (12) through an acid pipeline (16), a water outlet of the pipeline mixer (12) is connected with a water inlet of the pH adjusting tank (13), a fermentation raw liquid pump (17) is arranged in the pH adjusting tank (13), and a liquid outlet of the fermentation raw liquid pump (17) is connected with a fermentation raw liquid inlet of a fermentation tank (31) through a fermentation raw liquid pipeline (18); an acid pump (19) is arranged on the acid agent pipeline (16), a fermentation stock solution adjusting pH meter (110) is arranged between the pipeline mixer (12) and the pH adjusting tank (13), the fermentation stock solution adjusting pH meter (110) is in communication connection with the acid pump (19), a fermentation stock solution liquid level meter (111) is arranged on the pH adjusting tank (13), the fermentation stock solution liquid level meter (111) is in communication connection with the stock water pump (14), the acid pump (19) and the fermentation stock solution pump (17), and a fermentation stock solution display pH meter (112) is arranged on the fermentation stock solution pipeline (18);

the culture medium preparation system (2) comprises a nutrient solution tank (21), the nutrient solution tank (21) is used for storing a culture medium for culturing microorganisms, an aeration pipe is arranged on the nutrient solution tank (21), and a liquid outlet of the nutrient solution tank (21) is connected with a nutrient solution inlet of the fermentation tank (31) through a nutrient solution pipeline (22); a nutrient solution pump (23) is arranged on the nutrient solution pipeline (22);

The expanded fermentation system (3) comprises a fermentation tank (31) and a stirrer (32), microorganisms specially used for biochemical treatment of high-salinity wastewater are stored in the fermentation tank (31), an aeration pipe is arranged at the bottom of the fermentation tank (31), the stirrer (32) is arranged in the fermentation tank (31), a liquid outlet of the fermentation tank (31) is connected with a biochemical reaction tank through a fermentation liquid pipeline (33), and a fermentation liquid pump (34) is arranged on the fermentation liquid pipeline (33);

The temperature control system (4) comprises a heating rod (41) and a fermentation liquor thermometer (42), the heating rod is arranged in the fermentation tank (31) and used for heating the fermentation liquor in the fermentation tank (31), and the fermentation liquor thermometer (42) is arranged in the fermentation tank (31); the fermentation liquor thermometer (42) is in communication connection with the electric heater of the heating rod (41).

2. The semi-open microbial fermentation plant for high salinity wastewater treatment according to claim 1, characterized in that, a fermentation broth display pH meter (35) and a fermentation broth level meter (36) are provided on the fermentation tank (31); the fermentation liquor liquid level meter (36) is in communication connection with the fermentation stock pump (17), the nutrient solution pump (23) and the fermentation liquor pump (34).

3. The semi-open type microbial fermentation equipment for high-salinity wastewater treatment according to claim 2, characterized by further comprising a PLC control system (5), wherein the PLC control system (5) comprises a user end (51), an exchanger (52) and a controller (53) which are connected in sequence, the signal input end of the controller (53) is in communication connection with the user end (51), a fermentation stock solution adjusting pH meter (110), a fermentation stock solution liquid level meter (111), a fermentation stock solution display pH meter (112), a fermentation solution display pH meter (35), a fermentation solution liquid level meter (36) and a fermentation solution thermometer (42), and the signal output end is in communication connection with a stock water pump (14), a fermentation stock solution pump (17), an acid pump (19), a nutrient solution pump (23), a fermentation solution pump (34), a stirrer (32) and an electric heater.

4. The semi-open type microorganism fermentation equipment for high-salinity wastewater treatment according to claim 3, characterized in that the temperature control system (4) further comprises a hot water interlayer (43) and a hot water circulation tank (44), the hot water interlayer (43) is arranged outside the fermentation tank (31), the hot water circulation tank (44) is connected with a steam pipeline of an industrial plant area, an outlet of the hot water circulation tank (44) is connected with an inlet of the hot water interlayer (43) through a water inlet pipeline (45), an inlet of the hot water circulation tank (44) is connected with an outlet of the hot water interlayer (43) through a water outlet pipeline (46), and a hot water circulation pump (47) is arranged on the water inlet pipeline (45); the steam pipeline is provided with a steam switch (48), the hot water circulation tank (44) is provided with a hot water circulation thermometer (49), the signal output end of the controller (53) is in communication connection with the steam switch (48), and the signal input end of the controller (53) is in communication connection with the hot water circulation thermometer (49).

5. The semi-open microbial fermentation plant for high salinity wastewater treatment according to claim 4, characterized in that the fermentation liquor adjusting pH meter (110) feedback controls the rotation speed of the acid pump (19); the fermentation liquor thermometer (42) controls the electric heater in a feedback mode; the hot water circulation thermometer (49) feedback-controls the steam switch (48).

6. The semi-open type microorganism fermentation apparatus for high salinity wastewater treatment according to claim 1, characterized in that, a dissolved oxygen concentration meter (37) is further arranged on the fermentation tank (31) for measuring the dissolved oxygen concentration of the fermentation liquid.

7. The semi-open microbial fermentation apparatus for high salinity wastewater treatment according to claim 1, characterized in that the given pH value of the fermentation stock solution adjusting pH meter (110) is 6.8-7.5.

8. a semi-open type microbial fermentation method for high-salinity wastewater treatment is characterized in that a nutrient solution tank and a fermentation tank are respectively provided with an aeration pipe, and the method comprises the following steps:

step S010, raw material feeding in the fermentation tank:

Starting a nutrient solution pump, feeding a culture medium into the fermentation tank from a nutrient solution tank, and closing the nutrient solution pump after the nutrient solution pump runs for a set time;

Starting the electric heater, heating the liquid in the fermentation tank through the heating rod, simultaneously monitoring the temperature of the liquid in the tank in real time by the fermentation liquid thermometer, and feeding back and controlling the electric heater to keep the temperature of the liquid in the tank within a set temperature range;

Starting a raw water pump in the high-salinity wastewater pool to enable the high-salinity wastewater to enter a pipeline mixer from the high-salinity wastewater pool, immediately starting an acid pump to enable an acid agent to enter the pipeline mixer from an acid agent storage device to be mixed with the high-salinity wastewater, and reducing the pH value of the high-salinity wastewater to form a fermentation raw liquid; a fermentation stock solution adjusting pH meter between the pipeline mixer and the pH adjusting tank monitors the pH value of the fermentation stock solution in real time, and the rotating speed of the acid pump is fed back and controlled to keep the pH value of the fermentation stock solution entering the pH adjusting tank within a set pH range;

A fermentation stock solution liquid level meter in the pH adjusting tank monitors the liquid level in the tank in real time, and when the liquid level in the tank reaches a set high value, a stock water pump and an acid pump are closed, and a fermentation stock solution pump is started to enable the fermentation stock solution to enter the fermentation tank from the pH adjusting tank; when the liquid level in the tank reaches a set low value, closing the fermentation raw liquid pump;

Step S020, fermenting fermentation liquor in the fermentation tank:

Starting a stirrer arranged in the fermentation tank, and fully mixing and fermenting fermentation stock solution from a pH adjusting tank, nutrient solution from a nutrient solution tank and microorganisms specially used for biochemical treatment of high-salinity wastewater in the fermentation tank to form fermentation liquor;

Step S030, discharging fermentation liquor in the fermentation tank:

And (4) closing the stirrer, starting a fermentation liquor pump, and introducing the fermentation liquor into the biochemical reaction tank from the fermentation tank.

9. The semi-open microbial fermentation method for high salinity wastewater treatment according to claim 8, characterized in that said step S030 is replaced with:

Step S030', the stirrer is closed, and the fermentation liquor pump is started to make the fermentation liquor enter the biochemical reaction tank from the fermentation tank; the fermentation liquid level meter in the fermentation tank monitors the liquid level in the tank in real time, and when the liquid level in the tank reaches a set low value, the fermentation liquid pump is closed.

10. The semi-open microbial fermentation process for high salinity wastewater treatment according to claim 8, characterized in that step S010 is replaced with:

step S010', starting a nutrient solution pump, feeding the culture medium into the fermentation tank from the nutrient solution tank, and closing the nutrient solution pump after the nutrient solution pump runs for a set time;

starting a hot water circulating pump, and injecting circulating water in a hot water circulating tank into a hot water interlayer, wherein the hot water circulating tank is connected with a steam pipeline of an industrial plant area, the hot water interlayer is arranged outside the fermentation tank, and the hot water interlayer is in circulating connection with the hot water circulating tank; the hot water interlayer heats the liquid in the fermentation tank, and meanwhile, the temperature of circulating water of the hot water circulating thermometer is fed back to control a steam switch of the steam pipeline, so that the temperature of the circulating water in the hot water circulating tank and the hot water interlayer is kept within a set temperature range;

starting a raw water pump in the high-salinity wastewater pool to enable the high-salinity wastewater to enter a pipeline mixer from the high-salinity wastewater pool, immediately starting an acid pump to enable an acid agent to enter the pipeline mixer from an acid agent storage device to be mixed with the high-salinity wastewater, and reducing the pH value of the high-salinity wastewater to form a fermentation raw liquid; a fermentation stock solution adjusting pH meter between the pipeline mixer and the pH adjusting tank monitors the pH value of the fermentation stock solution in real time, and the rotating speed of the acid pump is fed back and controlled to keep the pH value of the fermentation stock solution entering the pH adjusting tank within a set pH range;

a fermentation stock solution liquid level meter in the pH adjusting tank monitors the liquid level in the tank in real time, and when the liquid level in the tank reaches a set high value, a stock water pump and an acid pump are closed, and a fermentation stock solution pump is started to enable the fermentation stock solution to enter the fermentation tank from the pH adjusting tank; and when the liquid level in the tank reaches a set low value, closing the fermentation raw liquid pump.

Technical Field

the invention relates to the technical field of sewage treatment, in particular to semi-open microbial fermentation equipment and a method for treating high-salinity wastewater.

background

the high-salinity wastewater is wastewater with the total salt mass fraction of more than 1%, mainly comes from chemical plants, petroleum and natural gas collection and processing and the like, contains various substances such as salt, oil, organic heavy metals, radioactive substances and the like, and is one of the industrial wastewater which is generally accepted in the field of domestic and foreign wastewater treatment at present and is difficult to treat. The biological enhancement technology is an indispensable important means in the field of sewage treatment, especially in the field of high-salinity wastewater treatment. In the process of treating high-salinity wastewater, because of the lack of nutrient substances in the wastewater, the influence of toxic substances and salinity and other adverse factors, the number of floras in the wastewater is small, common floras are difficult to survive, the probability of mixed bacteria pollution and survival is low, and the wastewater treatment effect is influenced. The breeding of high-performance strains and the expanded culture of the bred high-performance strains are the basis for realizing the industrial application of the biological enhancement technology, so the design and the application of the industrial microbial fermentation process are directly related to the use efficiency of the biological enhancement technology in the field of high-salinity wastewater treatment.

In the existing industrial microbial fermentation system: on one hand, the efficiency of expanding and producing microorganisms is low, and the energy consumption is high; on the other hand, even if the high-performance bacterial strain is bred, the activity and survival rate of the bacterial strain are difficult to keep stable after the bacterial strain is put into a biochemical reaction tank of high-salinity wastewater. Thus, both aspects affect the efficiency of the bioaugmentation technique.

disclosure of Invention

The invention provides semi-open microbial fermentation equipment and a method for high-salinity wastewater treatment, and aims to solve the problem of low use efficiency of a biological enhancement technology in the field of high-salinity wastewater treatment.

in a first aspect, the invention provides a semi-open type microbial fermentation device for high-salinity wastewater treatment, which comprises a wastewater pH adjusting system, a culture medium preparation system, an amplification fermentation system and a temperature control system, wherein:

The wastewater pH adjusting system comprises a high-salinity wastewater pool, a pipeline mixer and a pH adjusting tank, wherein the high-salinity wastewater pool is used for storing high-salinity wastewater to be treated, a raw water pump is arranged in the high-salinity wastewater pool, a water outlet of the raw water pump is connected with a water inlet of the pipeline mixer through a wastewater pipeline, an acid outlet of an acid storage device is connected with an acid inlet of the pipeline mixer through an acid agent pipeline, a water outlet of the pipeline mixer is connected with a water inlet of the pH adjusting tank, a fermentation raw liquid pump is arranged in the pH adjusting tank, and a liquid outlet of the fermentation raw liquid pump is connected with a fermentation raw liquid inlet of the fermentation tank through a fermentation raw liquid pipeline; the acid pump is arranged on the acid agent pipeline, the fermentation stock solution adjusting pH meter is arranged between the pipeline mixer and the pH adjusting tank, the fermentation stock solution adjusting pH meter is in communication connection with the acid pump, the fermentation stock solution liquid level meter is arranged on the pH adjusting tank, the fermentation stock solution liquid level meter is in communication connection with the stock pump, the acid pump and the fermentation stock solution pump, and the fermentation stock solution display pH meter is arranged on the fermentation stock solution pipeline.

the culture medium preparation system comprises a nutrient solution tank, the nutrient solution tank is used for storing a culture medium for culturing microorganisms, an aeration pipe is arranged on the nutrient solution tank, and a liquid outlet of the nutrient solution tank is connected with a nutrient solution inlet of the fermentation tank through a nutrient solution pipeline; the nutrient solution pipeline is provided with a nutrient solution pump.

Enlarge fermentation system and include fermentation cylinder and agitator, deposit the microorganism that is used for high salt waste water biochemical treatment specially in the fermentation cylinder, the fermentation cylinder bottom is provided with the aeration pipe, and the agitator sets up in the fermentation cylinder, and the leakage fluid dram of fermentation cylinder passes through the zymotic fluid pipeline and connects biochemical reaction pond, is provided with the zymotic fluid pump on the zymotic fluid pipeline.

The temperature control system comprises a heating rod and a thermometer, the heating rod is arranged in the fermentation tank and used for heating fermentation liquor in the fermentation tank, and the fermentation liquor thermometer is arranged in the fermentation tank; the fermentation liquor thermometer is in communication connection with the electric heater of the heating rod.

Optionally, a fermentation liquid display pH meter and a fermentation liquid level meter are arranged on the fermentation tank; the fermentation liquor level meter is in communication connection with a fermentation stock pump, a nutrient solution pump and a fermentation liquor pump.

Optionally, the system further comprises a PLC control system, the PLC control system comprises a user side, an exchanger and a controller which are sequentially connected, a signal input end of the controller is in communication connection with the user side, a fermentation stock solution adjusting pH meter, a fermentation stock solution liquid level meter, a fermentation stock solution display pH meter, a fermentation solution liquid level meter and a thermometer, and a signal output end of the controller is in communication connection with a raw water pump, a fermentation stock solution pump, an acid pump, a nutrient solution pump, a fermentation solution pump, a stirrer and an electric heater.

optionally, the temperature control system further comprises a hot water interlayer and a hot water circulation tank, the hot water interlayer is arranged outside the fermentation tank, the hot water circulation tank is connected with a steam pipeline of the industrial plant area, an outlet of the hot water circulation tank is connected with an inlet of the hot water interlayer through a water inlet pipeline, an inlet of the hot water circulation tank is connected with an outlet of the hot water interlayer through a water outlet pipeline, and a hot water circulation pump is arranged on the water inlet pipeline; the steam pipeline is provided with a steam switch, the hot water circulation tank is provided with a hot water circulation thermometer, the signal output end of the controller is in communication connection with the steam switch, and the signal input end of the controller is in communication connection with the hot water circulation thermometer.

optionally, the fermentation stock solution adjusts the pH meter to feed back and control the rotating speed of the acid pump; the fermentation liquor thermometer controls the electric heater in a feedback way; the hot water circulating thermometer controls the steam switch in a feedback way.

Optionally, a dissolved oxygen concentration meter is further provided on the fermentation tank for measuring the dissolved oxygen concentration of the fermentation liquid.

optionally, the fermentation stock solution pH adjusting meter has a given pH value of 6.8-7.5.

In a second aspect, the invention also provides a semi-open microbial fermentation method for high-salinity wastewater treatment, which is characterized in that a nutrient solution tank and a fermentation tank are respectively provided with an aeration pipe, and the method comprises the following steps:

step S010, raw material feeding in the fermentation tank:

And starting a nutrient solution pump, enabling the culture medium to enter the fermentation tank from the nutrient solution tank, and closing the nutrient solution pump after the nutrient solution pump runs for a set time.

And starting the electric heater, heating the liquid in the fermentation tank through the heating rod, monitoring the temperature of the liquid in the tank in real time by the fermentation liquid thermometer, and feeding back and controlling the electric heater to keep the temperature of the liquid in the tank within a set temperature range.

Starting a raw water pump in the high-salinity wastewater pool to enable the high-salinity wastewater to enter a pipeline mixer from the high-salinity wastewater pool, immediately starting an acid pump to enable an acid agent to enter the pipeline mixer from an acid agent storage device to be mixed with the high-salinity wastewater, and reducing the pH value of the high-salinity wastewater to form a fermentation raw liquid; and a fermentation stock solution adjusting pH meter between the pipeline mixer and the pH adjusting tank monitors the pH value of the fermentation stock solution in real time, and the rotating speed of the acid pump is fed back and controlled to keep the pH value of the fermentation stock solution entering the pH adjusting tank within a set pH range.

a fermentation stock solution liquid level meter in the pH adjusting tank monitors the liquid level in the tank in real time, and when the liquid level in the tank reaches a set high value, a stock water pump and an acid pump are closed, and a fermentation stock solution pump is started to enable the fermentation stock solution to enter the fermentation tank from the pH adjusting tank; and when the liquid level in the tank reaches a set low value, closing the fermentation raw liquid pump.

Step S020, fermenting fermentation liquor in the fermentation tank:

starting a stirrer arranged in the fermentation tank, and fully mixing and fermenting the fermentation stock solution from the pH adjusting tank, the nutrient solution from the nutrient solution tank and the microorganism specially used for the biochemical treatment of the high-salinity wastewater in the fermentation tank to form fermentation liquor.

Step S030, discharging fermentation liquor in the fermentation tank:

And (4) closing the stirrer, starting a fermentation liquor pump, and introducing the fermentation liquor into the biochemical reaction tank from the fermentation tank.

alternatively, step S030 is replaced with:

Step S030', the stirrer is closed, and the fermentation liquor pump is started to make the fermentation liquor enter the biochemical reaction tank from the fermentation tank; the fermentation liquid level meter in the fermentation tank monitors the liquid level in the tank in real time, and when the liquid level in the tank reaches a set low value, the fermentation liquid pump is closed. Alternatively, step S010 is replaced with:

And step S010', starting a nutrient solution pump, feeding the culture medium into the fermentation tank from the nutrient solution tank, and closing the nutrient solution pump after the nutrient solution pump runs for a set time.

starting a hot water circulating pump, and injecting circulating water in a hot water circulating tank into a hot water interlayer, wherein the hot water circulating tank is connected with a steam pipeline of an industrial plant area, the hot water interlayer is arranged outside the fermentation tank, and the hot water interlayer is in circulating connection with the hot water circulating tank; the hot water interlayer heats the liquid in the fermentation tank, and meanwhile, the temperature of the circulating water of the hot water circulating thermometer is fed back to control a steam switch of the steam pipeline, so that the temperature of the circulating water in the hot water circulating tank and the hot water interlayer is kept within a set temperature range.

Starting a raw water pump in the high-salinity wastewater pool to enable the high-salinity wastewater to enter a pipeline mixer from the high-salinity wastewater pool, immediately starting an acid pump to enable an acid agent to enter the pipeline mixer from an acid agent storage device to be mixed with the high-salinity wastewater, and reducing the pH value of the high-salinity wastewater to form a fermentation raw liquid; and a fermentation stock solution adjusting pH meter between the pipeline mixer and the pH adjusting tank monitors the pH value of the fermentation stock solution in real time, and the rotating speed of the acid pump is fed back and controlled to keep the pH value of the fermentation stock solution entering the pH adjusting tank within a set pH range.

A fermentation stock solution liquid level meter in the pH adjusting tank monitors the liquid level in the tank in real time, and when the liquid level in the tank reaches a set high value, a stock water pump and an acid pump are closed, and a fermentation stock solution pump is started to enable the fermentation stock solution to enter the fermentation tank from the pH adjusting tank; and when the liquid level in the tank reaches a set low value, closing the fermentation raw liquid pump.

The invention has the following beneficial effects:

(1) Preparing a fermentation stock solution from the high-salinity wastewater, and matching with a nutrient solution with a culture medium to culture microorganisms specially used for biochemical treatment of the high-salinity wastewater, so that the activity and the survival rate of the microorganisms in the final fermentation broth are improved; because the special high-salinity wastewater is used for culturing, the microorganisms growing in the environment have good degradation effect on the high-salinity wastewater, so that the treatment efficiency of the high-salinity wastewater is greatly improved. Meanwhile, the cost for controlling the salinity of the culture medium in the nutrient solution is saved.

(2) Because the pH value of the high-salinity wastewater is more than or equal to 10, and the fermentation pH value range suitable for the functional bacteria is 6.8-7.5, in order to enable the fermentation stock solution to be suitable for preparing a culture medium, a wastewater pH adjusting system is designed, the high-salinity wastewater and an acid agent are mixed at a pipeline mixer for initial acidity adjustment, and then the pH value is further adjusted under the feedback adjusting action of a fermentation stock solution pH adjusting meter and an acid pump, so that the pH value of the fermentation stock solution entering a pH adjusting tank is neutral, and the scheme of culturing microorganisms by using the high-salinity wastewater is realized.

(3) The semi-open type fermentation is adopted, a sterilization system is not required to be arranged, only the aeration pipe is arranged at the bottom of the fermentation tank, the effect of stirring uniformity can be achieved while enough aeration quantity is provided, the cost of mixed bacteria control is saved, the cost is low, the operation is simple and convenient, and the popularization and the industrial application are easy.

(4) In order to ensure certain fermentation efficiency and simultaneously consider the convenience and the feasibility of field operation, a temperature control system capable of switching between electric heating or steam heating is designed.

(5) The PLC control system is introduced, the operation is simple and convenient, and the automation of the fermentation process and the feeding can be realized.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without any inventive exercise.

FIG. 1 is a schematic structural diagram of a semi-open type microbial fermentation device for high-salinity wastewater treatment provided by the invention;

Fig. 2 is a schematic structural diagram of a PLC control system according to the present invention;

FIG. 3 is a schematic diagram of a client control panel according to the present invention;

FIG. 4 is a schematic view of an automatic feeding control process provided by the present invention;

FIG. 5 is a schematic view of an automatic discharge control process according to the present invention;

FIG. 6 is a schematic structural diagram of another semi-open type microbial fermentation device for high-salinity wastewater treatment provided by the invention;

FIG. 7 is a schematic structural diagram of another PLC control system provided by the present invention;

FIG. 8 is a schematic diagram of another client control panel provided by the present invention;

FIG. 9 is a schematic view of another automatic feed control process provided by the present invention;

FIG. 10 is a schematic view of a safety interlock provided by the present invention.

in the above figures, the reference numerals denote:

Wastewater pH adjustment system: 11-a high-salinity wastewater tank, 12-a pipeline mixer, 13-a pH adjusting tank, 14-a raw water pump, 15-a wastewater pipeline, 16-an acid agent pipeline, 17-a fermentation raw liquid pump, 18-a fermentation raw liquid pipeline, 19-an acid pump, 110-a fermentation raw liquid adjusting pH meter, 111-a fermentation raw liquid level meter, and 112-a fermentation raw liquid displaying pH meter;

Culture medium preparation system: 21-a nutrient solution tank, 22-a nutrient solution pipeline and 23-a nutrient solution pump;

enlarging a fermentation system: 31-a fermentation tank, 32-a stirrer, 33-a fermentation liquor pipeline, 34-a fermentation liquor pump, 35-a fermentation liquor display pH meter, 36-a fermentation liquor liquid level meter and 37-a dissolved oxygen concentration meter;

A temperature control system: 41-heating rod, 42-fermentation liquor thermometer, 43-hot water interlayer, 44-hot water circulating tank, 45-water inlet pipe, 46-water outlet pipe, 47-hot water circulating pump, 48-steam switch, 49-hot water circulating thermometer;

A PLC control system: 51-user terminal, 52-switch, 53-controller, 511-display area, 512-manual area, 513-setting area, 514-control area.

Detailed Description

The invention provides semi-open microbial fermentation equipment and a method for high-salinity wastewater treatment, and aims to solve the problem of low use efficiency of a biological enhancement technology in the field of high-salinity wastewater treatment. The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.