CN219489788U

CN219489788U - Self-aeration lactic acid wastewater treatment device

Info

Publication number: CN219489788U
Application number: CN202320488906.7U
Authority: CN
Inventors: 叶森; 张喜康; 纳文波
Original assignee: Ningxia Qiyu New Biological Material Co ltd
Current assignee: Ningxia Qiyu New Biological Material Co ltd
Priority date: 2023-03-14
Filing date: 2023-03-14
Publication date: 2023-08-08
Anticipated expiration: 2033-03-14

Abstract

The utility model provides a from aeration lactic acid effluent treatment plant, includes first equalizing basin, IC reactor, the delivery port of first equalizing basin is connected with the water inlet of IC reactor, is equipped with first marsh gas export at the top of IC reactor, is equipped with the marsh gas entry in the bottom of first equalizing basin, is equipped with the second marsh gas export at the top of first equalizing basin, first marsh gas export and marsh gas entry connection lets in first equalizing basin with the marsh gas that the IC reactor produced, utilizes marsh gas bubble to carry the solid matter come-up at first equalizing basin dead angle position.

Description

Self-aeration lactic acid wastewater treatment device

Technical Field

The utility model relates to the technical field of sewage treatment, in particular to a self-aeration lactic acid wastewater treatment device.

Background

Lactic acid is used as additive and flavoring agent for food and beverage, corn and rice are mixed and crushed in certain proportion, water is added to pulp, and through the action of amylase and saccharifying enzyme, the material liquid is sterilized, fed into fermentation tank, lactic acid strain is inoculated to ferment, calcium carbonate is added to neutralize, the ripe fermentation liquid is pumped into plate-and-frame filter press, solid matter in the fermentation liquid is filtered, 98% sulfuric acid is added after the obtained filtrate is evaporated, and the filtrate is concentrated twice, decolorized and purified by ion exchange to obtain lactic acid product, and a large amount of waste water is produced in the process.

Therefore, as in documents Liu Qiong and Xu Fuqiu of anaerobic (IC reactor)/aerobic combined treatment of lactic acid production wastewater, an anaerobic (IC reactor)/aerobic treatment process is selected aiming at the characteristics of high concentration of organic matters and good biodegradability in the lactic acid production wastewater. And after passing through the grid, the high-concentration production wastewater is mixed with circulating cooling water and enters a neutralization pond for pH value adjustment. And then the wastewater enters an adjusting tank for uniform mixing, and a steam heating pipeline arranged in the adjusting tank can heat the wastewater when the air temperature is low. And then, the wastewater is lifted to an IC reactor by a pump for biochemical treatment, most organic matters are removed, the effluent automatically flows to an A/O reactor for oxidative decomposition, and finally the effluent reaches the standard. Wherein, the bottom of the adjusting tank is square upper seal, is a reinforced concrete structure, and the inner wall is corrosion-proof. The submerged stirrer is arranged in the tank, and solid substances in the water are prevented from precipitating by stirring, so that the water quality is kept uniform, and the waste water is prevented from putrefaction in the tank.

The adjustment Chi Li in the above document uses a submersible mixer to keep the water quality uniform and prevent the precipitation of solid matters, and a plurality of dead angles are necessarily present in the adjusting tank, so that the solid matters precipitated at the dead angles are difficult to float up by the submersible mixer.

Disclosure of Invention

In view of the above, there is a need for a self-aeration lactic acid wastewater treatment apparatus.

The utility model provides a from aeration lactic acid effluent treatment plant, includes first equalizing basin, IC reactor, the delivery port of first equalizing basin is connected with the water inlet of IC reactor, is equipped with first marsh gas export at the top of IC reactor, is equipped with the marsh gas entry in the bottom of first equalizing basin, is equipped with the second marsh gas export at the top of first equalizing basin, first marsh gas export is connected with the marsh gas entry.

Preferably, the first adjusting tank comprises a tank body and a screen, a closed cavity is arranged in the tank body, the screen is horizontally arranged at a position, close to the bottom of the tank, in the tank body, and the screen is arranged above the biogas inlet.

Preferably, the first adjusting tank further comprises an axial stirrer, the axial stirrer is arranged in the tank body, and the axial stirrer is arranged above the screen.

Preferably, the pore diameter of the screen mesh gradually decreases from the center to the periphery.

Preferably, the axial stirrer comprises a rotating shaft and blades, wherein the rotating shaft is vertically arranged, and the blades are spiral plates formed on the annular wall of the rotating shaft along the axial direction of the rotating shaft.

Preferably, the self-aeration lactic acid wastewater treatment device further comprises a buffer tank, and the water outlet of the IC reactor is connected with the water inlet of the buffer tank.

Preferably, the self-aeration lactic acid wastewater treatment device further comprises an A/O reaction tank, and the water outlet of the buffer tank is connected with the water inlet of the A/O reaction tank.

Preferably, the self-aeration lactic acid wastewater treatment device further comprises a methane storage cabinet, wherein an inlet of the methane storage cabinet is connected with the second methane outlet.

Preferably, the self-aeration lactic acid wastewater treatment device further comprises a wastewater storage tank, and a water outlet of the wastewater storage tank is connected with a water inlet of the first regulating tank.

Preferably, the self-aeration lactic acid wastewater treatment device further comprises a second regulating tank, a water distribution tank and a UASB tank, wherein a water outlet of the second regulating tank is connected with a water inlet of the water distribution tank, a water outlet of the water distribution tank is connected with a water inlet of the UASB tank, an overflow port at the top of the first regulating tank is connected with a water inlet of the water distribution tank, a water outlet of the UASB tank is connected with a water inlet of the buffer tank, a third biogas outlet is arranged at the top of the UASB tank, and the third biogas outlet is connected with an inlet of the biogas storage cabinet.

The utility model has the beneficial effects that: introducing the biogas generated by the IC reactor into a first regulating tank, and floating up the solid matters at the dead angle of the first regulating tank by utilizing biogas bubbles.

Drawings

FIG. 1 is a schematic diagram of the self-aeration lactic acid wastewater treatment device.

Fig. 2 is a schematic structural view of the first regulating tank.

In the figure: the device comprises a first regulating tank 10, a tank body 11, a screen 12, an axial stirrer 13, a rotating shaft 131, blades 132, an IC reactor 20, a buffer tank 30, an A/O reaction tank 40, a biogas storage tank 50, a wastewater storage tank 60, a second regulating tank 70, a distribution tank 80 and a UASB tank 90.

Description of the embodiments

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Referring to fig. 1, the embodiment of the utility model provides a self-aeration lactic acid wastewater treatment device, which comprises a first regulating tank 10 and an IC reactor 20, wherein a water outlet of the first regulating tank 10 is connected with a water inlet of the IC reactor 20, a first biogas outlet is arranged at the top of the IC reactor 20, a biogas inlet is arranged at the bottom of the first regulating tank 10, a second biogas outlet is arranged at the top of the first regulating tank 10, and the first biogas outlet is connected with the biogas inlet.

The utility model has the beneficial effects that: the biogas generated by the IC reactor 20 is introduced into the first regulating tank 10, and solid matters at dead angle positions of the first regulating tank 10 are carried by biogas bubbles to float upwards.

Referring to fig. 2, further, the first adjusting tank 10 includes a tank body 11 and a screen 12, a closed cavity is arranged in the tank body 11, the screen 12 is horizontally arranged in the tank body 11 at a position close to the tank bottom, and the screen 12 is arranged above the biogas inlet.

Referring to fig. 2, further, the first regulating tank 10 further includes an axial agitator 13, the axial agitator 13 is disposed in the tank body 11, and the axial agitator 13 is disposed above the screen 12.

The screen 12 acts as a gas distributor and allows water to pass through. The axial stirrer 13 forms annular water flow in the first regulating tank 10, pushes biogas bubbles in the water to dead angle positions, floats up from the lower part of the screen 12 at the dead angle positions, is dispersed into dispersion micro bubbles by the screen 12 at the same time, pushes solid matters at the dead angle positions to move for a small distance, and then enters the annular water flow area.

Further, referring to fig. 1, the pore size of the screen 12 gradually decreases from the center to the periphery.

Due to the action of the axial agitator 13, the central area of the screen 12 has little solid material, the central area having a slightly larger pore size which facilitates better passage of the water through the screen 12, and the peripheral areas having smaller pore sizes which prevent precipitated solid material from sinking through the screen 12 into the bottom wall of the first conditioning tank 10.

Referring to fig. 1, further, the axial agitator 13 includes a rotation shaft 131, and blades 132, the rotation shaft 131 being vertically disposed, the blades 132 being spiral plates formed on an annular wall of the rotation shaft 131 in an axial direction of the rotation shaft 131.

Referring to fig. 1, further, the self-aeration lactic acid wastewater treatment apparatus further includes a buffer tank 30, and a water outlet of the ic reactor 20 is connected with a water inlet of the buffer tank 30.

Referring to fig. 1, further, the self-aeration lactic acid wastewater treatment apparatus further includes an a/O reaction tank 40, and a water outlet of the buffer tank 30 is connected with a water inlet of the a/O reaction tank 40.

Referring to fig. 1, further, the self-aeration lactic acid wastewater treatment apparatus further includes a biogas tank 50, and an inlet of the biogas tank 50 is connected to a second biogas outlet.

Referring to fig. 1, further, the self-aeration lactic acid wastewater treatment apparatus further includes a wastewater reservoir 60, and a water outlet of the wastewater reservoir 60 is connected to a water inlet of the first regulating reservoir 10.

Referring to fig. 1, the self-aeration lactic acid wastewater treatment device further comprises a second regulating tank 70, a water distribution tank 80 and a UASB tank 90, wherein a water outlet of the second regulating tank 70 is connected with a water inlet of the water distribution tank 80, a water outlet of the water distribution tank 80 is connected with a water inlet of the UASB tank 90, an overflow port at the top of the first regulating tank 10 is connected with a water inlet of the water distribution tank 80, a water outlet of the UASB tank 90 is connected with a water inlet of the buffer tank 30, a third biogas outlet is arranged at the top of the UASB tank 90, and the third biogas outlet is connected with an inlet of the biogas storage cabinet 50.

The working process of the self-aeration lactic acid wastewater treatment device comprises the following steps: the waste water in the waste water storage tank is introduced into the first regulating tank 10, the PH value is regulated in the first regulating tank 10, the waste water passes through the first regulating tank 10, the flow speed and the flow rate are stabilized, then the waste water enters the IC reactor 20 for biochemical treatment, when the water quantity of the first regulating tank 10 is overlarge, the waste water overflows to the distribution tank 80, the distribution tank 80 carries out PH value regulation through the second regulating tank 70, the distribution tank 80 enters the UASB tank 90, the UASB tank 90 has similar functions with the IC reactor 20, methane generated by the IC reactor 20 and the UASB tank 90 enters the methane storage tank 50 for storage, the water of the IC reactor 20 and the UASB tank 90 enters the buffer tank 30 for stabilizing the flow speed and the flow rate, and finally enters the A/O reaction tank 40 for oxidative decomposition, and then the waste water reaches the standard for discharge.

In one embodiment, the number of the axial stirrers 13 is 3, 3 axial stirrers 13 are uniformly distributed along the length direction of the tank body 11, the rotation directions of 1 axial stirrer 13 positioned in the center and 2 axial stirrers 13 positioned at two sides are different, annular water flow formed by the central axial stirrer 13 and annular water flow formed by the axial stirrers 13 at two sides interfere with each other, the water flow disturbance of the first regulating tank 10 is strengthened, and the precipitation of solid substances can be weakened.

It should be noted that the structure of the regulating tank except the improvement point is not different from the known structure, and the IC reactor 20, the a/O reaction tank 40 and the UASB tank 90 may be the same as the IC internal circulation anaerobic reactor, the a/O tank and the UASB anaerobic reactor of the "high concentration methacrylic acid wastewater standard treatment system" with the application number 201621433931.1.

The modules or units in the device of the embodiment of the utility model can be combined, divided and deleted according to actual needs.

The foregoing disclosure is illustrative of the preferred embodiments of the present utility model, and is not to be construed as limiting the scope of the utility model, as it is understood by those skilled in the art that all or part of the above-described embodiments may be practiced with equivalents thereof, which fall within the scope of the utility model as defined by the appended claims.

Claims

1. A self-aeration lactic acid wastewater treatment device is characterized in that: the device comprises a first regulating tank and an IC (integrated circuit) reactor, wherein a water outlet of the first regulating tank is connected with a water inlet of the IC reactor, a first biogas outlet is formed in the top of the IC reactor, a biogas inlet is formed in the bottom of the first regulating tank, a second biogas outlet is formed in the top of the first regulating tank, the first biogas outlet is connected with the biogas inlet, the first regulating tank comprises a tank body and a screen, a closed cavity is formed in the tank body, the screen is horizontally arranged at a position, close to the bottom of the tank body, and the screen is arranged above the biogas inlet.

2. The self-aeration lactic acid wastewater treatment apparatus according to claim 1, wherein: the first regulating tank further comprises an axial stirrer, the axial stirrer is arranged in the tank body, and the axial stirrer is arranged above the screen.

3. The self-aeration lactic acid wastewater treatment apparatus according to claim 1, wherein: the pore diameter of the screen mesh gradually decreases from the center to the periphery.

4. The self-aeration lactic acid wastewater treatment apparatus according to claim 2, wherein: the axial stirrer comprises a rotating shaft and blades, wherein the rotating shaft is vertically arranged, and the blades are spiral plates formed on the annular wall of the rotating shaft along the axial direction of the rotating shaft.

5. The self-aeration lactic acid wastewater treatment apparatus according to claim 1, wherein: the self-aeration lactic acid wastewater treatment device further comprises a buffer tank, and the water outlet of the IC reactor is connected with the water inlet of the buffer tank.

6. The self-aeration lactic acid wastewater treatment apparatus according to claim 5, wherein: the self-aeration lactic acid wastewater treatment device further comprises an A/O reaction tank, and the water outlet of the buffer tank is connected with the water inlet of the A/O reaction tank.

7. The self-aeration lactic acid wastewater treatment apparatus according to claim 1, wherein: the self-aeration lactic acid wastewater treatment device further comprises a methane storage cabinet, and an inlet of the methane storage cabinet is connected with a second methane outlet.

8. The self-aeration lactic acid wastewater treatment apparatus according to claim 1, wherein: the self-aeration lactic acid wastewater treatment device further comprises a wastewater storage pool, and a water outlet of the wastewater storage pool is connected with a water inlet of the first regulating pool.

9. The self-aeration lactic acid wastewater treatment apparatus according to claim 5, wherein: the self-aeration lactic acid wastewater treatment device further comprises a second regulating tank, a distribution tank and a UASB tank, wherein a water outlet of the second regulating tank is connected with a water inlet of the distribution tank, a water outlet of the distribution tank is connected with a water inlet of the UASB tank, an overflow port at the top of the first regulating tank is connected with a water inlet of the distribution tank, a water outlet of the UASB tank is connected with a water inlet of the buffer tank, a third biogas outlet is arranged at the top of the UASB tank, and the third biogas outlet is connected with an inlet of the biogas storage cabinet.