CN116062950A - Lactic acid production wastewater treatment system - Google Patents

Lactic acid production wastewater treatment system Download PDF

Info

Publication number
CN116062950A
CN116062950A CN202310244808.3A CN202310244808A CN116062950A CN 116062950 A CN116062950 A CN 116062950A CN 202310244808 A CN202310244808 A CN 202310244808A CN 116062950 A CN116062950 A CN 116062950A
Authority
CN
China
Prior art keywords
tank
lactic acid
treatment system
acid production
wastewater treatment
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310244808.3A
Other languages
Chinese (zh)
Inventor
叶森
张喜康
纳文波
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ningxia Qiyu New Biological Material Co ltd
Original Assignee
Ningxia Qiyu New Biological Material Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ningxia Qiyu New Biological Material Co ltd filed Critical Ningxia Qiyu New Biological Material Co ltd
Priority to CN202310244808.3A priority Critical patent/CN116062950A/en
Publication of CN116062950A publication Critical patent/CN116062950A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
    • C02F2103/36—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the manufacture of organic compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/28—Anaerobic digestion processes
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/28—Anaerobic digestion processes
    • C02F3/2846—Anaerobic digestion processes using upflow anaerobic sludge blanket [UASB] reactors
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/30—Aerobic and anaerobic processes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00—Technologies for the production of fuel of non-fossil origin
    • Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel

Abstract

The utility model provides a lactic acid waste water treatment system, includes first equalizing basin, first equalizing basin includes cell body, axial agitator, establish the closed chamber in the cell body, the axial agitator is arranged in the cell body, the axial agitator is 3, 3 axial agitators are along the length direction equipartition of first equalizing basin, 1 axial agitator that is located the center is different with 2 axial agitators rotation direction that are located the both sides, the annular rivers that the axial agitator that the center formed interfere each other with the annular rivers that the axial agitator that the both sides formed, the rivers disturbance of first equalizing basin has been strengthened, can weaken the deposit of solid matter.

Description

Lactic acid production wastewater treatment system
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a lactic acid production wastewater treatment system.
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 lactic acid production wastewater treatment system that addresses the above-described shortcomings.
The utility model provides a lactic acid production wastewater treatment system, includes first equalizing basin, first equalizing basin includes cell body, axial agitator, establish the closed chamber in the cell body, the axial agitator is arranged in the cell body, the axial agitator is 3, and 3 axial agitators are along the length direction equipartition of first equalizing basin, and 1 axial agitator that is located the center is different with 2 axial agitators rotation direction that are located both sides.
Preferably, the lactic acid production wastewater treatment system further comprises an IC (integrated circuit) reactor, wherein the water outlet of the first regulating tank is connected with the 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, and the first biogas outlet is connected with the biogas inlet.
Preferably, the first adjusting tank further comprises a screen, the screen is horizontally arranged at a position in the tank body close to the tank bottom, the screen is arranged above the biogas inlet, 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 lactic acid production wastewater treatment system 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 lactic acid production wastewater treatment system 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 lactic acid production wastewater treatment system further comprises a biogas storage tank, and an inlet of the biogas storage tank is connected with the second biogas outlet.
Preferably, the lactic acid production wastewater treatment system 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 lactic acid production wastewater treatment system further comprises a second adjusting tank, a water distribution tank and a UASB tank, wherein a water outlet of the second adjusting 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 adjusting 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 invention has the beneficial effects that: the rotation directions of the 1 axial stirrer positioned at the center and the 2 axial stirrers positioned at the two sides are different, the annular water flow formed by the axial stirrers at the center and the annular water flow formed by the axial stirrers at the two sides interfere with each other, the water flow disturbance of the first regulating tank is strengthened, and the precipitation of solid substances can be weakened.
Drawings
Fig. 1 is a schematic structural view of the first regulating tank.
Fig. 2 is a schematic structural diagram of the lactic acid production wastewater treatment system.
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 invention, 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 invention, 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 invention provides a lactic acid production wastewater treatment system, which comprises a first regulating tank 10, wherein the first regulating tank 10 comprises a tank body 11 and axial stirrers 13, a closed cavity is arranged in the tank body 11, the axial stirrers 13 are arranged in the tank body 11, 3 axial stirrers 13 are uniformly distributed along the length direction of the tank body 11, and the rotation direction of 1 axial stirrer 13 positioned in the center is different from that of 2 axial stirrers 13 positioned at two sides.
The invention has the beneficial effects that: the rotation directions of the 1 axial stirrer 13 positioned at the center and the 2 axial stirrers 13 positioned at the two sides are different, the annular water flow formed by the axial stirrers 13 at the center and the annular water flow formed by the axial stirrers 13 at the two sides interfere with each other, the water flow disturbance of the first regulating tank 10 is strengthened, and the sedimentation of solid substances can be weakened.
Referring to fig. 2, further, the lactic acid production wastewater treatment system further comprises an IC reactor 20, wherein the water outlet of the first regulating tank 10 is connected with the 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 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. 1, further, the first regulating tank 10 further comprises a screen 12, the screen 12 is horizontally arranged in the tank 11 at a position close to the tank bottom, the screen 12 is arranged above the biogas inlet, and the axial stirrer 13 is arranged 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. 2, further, the lactic acid production wastewater treatment system further includes a buffer tank 30, and the water outlet of the ic reactor 20 is connected with the water inlet of the buffer tank 30.
Referring to fig. 2, further, the lactic acid production wastewater treatment system 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. 2, further, the lactic acid production wastewater treatment system further includes a biogas tank 50, and an inlet of the biogas tank 50 is connected to the second biogas outlet.
Referring to fig. 2, further, the lactic acid production wastewater treatment system further includes a wastewater tank 60, and a water outlet of the wastewater tank 60 is connected to a water inlet of the first regulating tank 10.
Referring to fig. 2, further, the lactic acid production wastewater treatment system further comprises a second adjusting tank 70, a distribution tank 80 and a UASB tank 90, wherein the water outlet of the second adjusting tank 70 is connected with the water inlet of the distribution tank 80, the water outlet of the distribution tank 80 is connected with the water inlet of the UASB tank 90, the overflow port at the top of the first adjusting tank 10 is connected with the water inlet of the distribution tank 80, the water outlet of the UASB tank 90 is connected with the 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 the inlet of the biogas storage tank 50.
The working process of the lactic acid production wastewater treatment system 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.
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 invention can be combined, divided and deleted according to actual needs.
The foregoing disclosure is illustrative of the preferred embodiments of the present invention, and is not to be construed as limiting the scope of the invention, 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 invention as defined by the appended claims.

Claims (10)

1. A lactic acid production wastewater treatment system is characterized in that: including first equalizing basin, first equalizing basin includes cell body, axial agitator, establish the closed chamber in the cell body, the axial agitator is arranged in the cell body, the axial agitator is 3, and 3 axial agitators are along the length direction equipartition of first equalizing basin, and 1 axial agitator that is located the center is different with 2 axial agitators rotation direction that are located both sides.
2. The lactic acid production wastewater treatment system of claim 1, wherein: the lactic acid production wastewater treatment system further comprises an IC (integrated circuit) reactor, the water outlet of the first regulating tank is connected with the 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, and the first biogas outlet is connected with the biogas inlet.
3. The lactic acid production wastewater treatment system of claim 1, wherein: the first regulating tank further comprises a screen, the screen is horizontally arranged at a position in the tank body, which is close to the bottom of the tank, the screen is arranged above the biogas inlet, and the axial stirrer is arranged above the screen.
4. A lactic acid production wastewater treatment system as claimed in claim 3, wherein: the pore diameter of the screen mesh gradually decreases from the center to the periphery.
5. The lactic acid production wastewater treatment system of claim 1, 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.
6. The lactic acid production wastewater treatment system according to claim 2, wherein: the lactic acid production wastewater treatment system further comprises a buffer pool, and the water outlet of the IC reactor is connected with the water inlet of the buffer pool.
7. The lactic acid production wastewater treatment system of claim 6, wherein: the lactic acid production wastewater treatment system 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.
8. The lactic acid production wastewater treatment system according to claim 2, wherein: the lactic acid production wastewater treatment system further comprises a methane storage cabinet, and an inlet of the methane storage cabinet is connected with a second methane outlet.
9. The lactic acid production wastewater treatment system of claim 1, wherein: the lactic acid production wastewater treatment system 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.
10. The lactic acid production wastewater treatment system of claim 6, wherein: the lactic acid production wastewater treatment system further comprises a second adjusting tank, a distribution tank and a UASB tank, wherein a water outlet of the second adjusting 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 adjusting 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.
CN202310244808.3A 2023-03-14 2023-03-14 Lactic acid production wastewater treatment system Pending CN116062950A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310244808.3A CN116062950A (en) 2023-03-14 2023-03-14 Lactic acid production wastewater treatment system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310244808.3A CN116062950A (en) 2023-03-14 2023-03-14 Lactic acid production wastewater treatment system

Publications (1)

Publication Number Publication Date
CN116062950A true CN116062950A (en) 2023-05-05

Family

ID=86178739

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310244808.3A Pending CN116062950A (en) 2023-03-14 2023-03-14 Lactic acid production wastewater treatment system

Country Status (1)

Country Link
CN (1) CN116062950A (en)

Similar Documents

Publication Publication Date Title
Kariyama et al. Influence of mixing on anaerobic digestion efficiency in stirred tank digesters: A review
US4568457A (en) Staged anaerobic reactor
CN101759316B (en) Method for treating wastewater containing molasses alcohol
JP5114780B2 (en) Anaerobic treatment method and apparatus
CN201033757Y (en) Sewage water treatment system for fruit juice waste water
JP2004528981A (en) Anaerobic digesters, anaerobic digestion methods and methods for minimizing the use of inhibitory polymers in digestion
AU2015326808A1 (en) Methods and bioreactors for microbial digestion using immobilized biofilms
CN101734827A (en) Method for treating yeast wastewater
US4604206A (en) Staged anaerobic reactor
CN105565489B (en) Sludge circulating type effectively hydrolyzing reaction unit
CN113304685A (en) Continuous flow aerobic granular sludge reaction device with stirring paddle internal member and method
CN103771655B (en) A kind for the treatment of process of cellulose alcoholic fermentation waste liquid
CN108751402A (en) A kind of method of novel aerobic particle mud method processing brewery industry waste water
CN108623102A (en) A kind of combined type SBR-MBR-Fenton Pig raising wastewater processing methods
CN104973737B (en) A kind of method for processing higher suspension solid concentration organic wastewater
CN105253997A (en) Pressure type microbubble biochemical reaction technology
CN219489788U (en) Self-aeration lactic acid wastewater treatment device
CN112456755A (en) Wastewater sludge reduction treatment system
CN207121472U (en) A kind of aerobic integrated sewage-treating reactor device of internal circulating anaerobic
RU2236451C1 (en) Aerobic liquid phase fermentation apparatus
CN201999835U (en) Anaerobic hydrolytic acidification and AO-SBR (anoxic/oxic-sequencing batch reactor activated sludge process) integrated sewage treatment reaction tank
CN116062950A (en) Lactic acid production wastewater treatment system
CN111534416A (en) Fermentation equipment and fermentation method for organic matters
CN115784435A (en) Micro-aerobic anaerobic reaction system with enhanced circulation
CN106380055B (en) Device for anaerobic digestion of sludge and operation method thereof

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination