System for preparing carbon source by recycling beer wastewater

Abstract

The invention relates to the technical field of water treatment, in particular to a system for preparing a carbon source by recycling beer wastewater. The system for preparing the carbon source by recycling the beer wastewater comprises a pretreatment unit, a membrane filtration unit and a membrane concentration unit which are connected in sequence; wherein the pretreatment unit is used for conditioning and precipitating beer wastewater to obtain feed liquid; the membrane filtration unit is used for intercepting suspended solids and colloids in the feed liquid; and the membrane concentration unit is used for performing multi-stage concentration treatment on the filtrate output by the membrane filtration unit and outputting clear liquid and high-concentration carbon source liquid. According to the system for preparing the carbon source by recycling the beer wastewater, by collecting and treating the beer wastewater, the concentration of COD (Chemical Oxygen Demand) in the carbon source can be greatly improved, part of total nitrogen and total phosphorus can be removed, the economic value of carbon source utilization is improved, resource waste is avoided, and meanwhile, the treatment burden of a downstream sewage plant can be greatly reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water treatment, in particular to a beer wastewater resourceization carbon source system. BACKGROUND

[0002] At present, the wastewater in the beer production process mainly comes from the saccharification section, the fermentation section, the filling section, the water preparation section and the like. The common practice in the industry is to collect the above-mentioned sewage and then discharge it after harmless treatment in a sewage treatment system. The harmless treatment requires a large amount of capital investment and high operating costs, and also causes waste of resources. Some enterprises collect high-concentration organic wastewater such as saccharification wastewater, waste yeast liquid in the fermentation section, waste beer in the filling section, and the like, and directly transport them to a sewage plant for use as carbon source without any treatment. The beer wastewater directly transported without treatment will result in high transportation cost and poor economy. Because the concentration is relatively low, the beer wastewater can only be applied nearby, which limits its application. In addition, the total nitrogen and total phosphorus in the water affect the quality of the carbon source and reduce the use effect. SUMMARY

[0003] The present application provides a beer wastewater resourceization carbon source system to improve the above-mentioned problems.

[0004] The present application is specifically as follows: A beer wastewater resourceization carbon source system, comprising a pretreatment unit, a membrane filtration unit and a membrane concentration unit connected in sequence. The pretreatment unit is used for conditioning and sedimentation of the beer wastewater, and a feed liquid is obtained. The membrane filtration unit is used for intercepting suspended solids and colloids in the feed liquid. The membrane concentration unit is used for multi-stage concentration treatment of the filtrate output by the membrane filtration unit, and outputs a clear liquid and a high-concentration carbon source liquid.

[0005] In an embodiment of the present application, the pretreatment unit comprises a conditioning tank and a sedimentation tank connected in sequence. The conditioning tank is used for adjusting the water quality, water quantity and water temperature of the beer wastewater, and the treated wastewater is introduced into the sedimentation tank by a lifting pump. The sedimentation tank is used for removing solid substances in the wastewater output by the conditioning tank, and the supernatant is introduced into a ceramic membrane feed tank.

[0006] In an embodiment of the present application, the pretreatment unit further comprises a dewatering machine and a residue discharge pump. The dewatering machine is in communication with the sedimentation tank and is used for dewatering the solid substances separated from the sedimentation tank, and the separated press liquor is returned to the conditioning tank. The residue discharge pump is connected with the dewatering machine and is used for discharging the separated solid substances.

[0007] In an embodiment of the present application, the pretreatment unit further comprises a sludge interface instrument connected with the sedimentation tank. The sludge interface instrument is used for detecting the height of the solid substance layer of the sedimentation tank, and is electrically connected with the residue discharge pump and the dewatering machine.

[0008] In an embodiment of the present application, the pretreatment unit further comprises a temperature monitor and a cooling system connected with the conditioning tank; the temperature monitor is electrically connected with the cooling system; The temperature monitor is used to detect the temperature of the conditioning tank, and the cooling system is used to adjust the temperature of the conditioning tank.

[0009] In an embodiment of the present application, the membrane filtration unit comprises a ceramic membrane water inlet pool, a water inlet pump, a filter, a ceramic membrane assembly and a water production tank connected in sequence; The ceramic membrane water inlet pool is used to receive the feed liquid output by the pretreatment unit, the water inlet pump is used to pressurize the feed liquid, and the filter is used to remove the floating malt and barley particles on the water surface, so that the feed liquid is output to the ceramic membrane assembly; the ceramic membrane assembly is used to perform cross-flow filtration on the feed liquid to intercept the suspended solids and colloids in the feed liquid, and the filtrate is introduced into the water production tank.

[0010] In an embodiment of the present application, the beer wastewater resourceization carbon source system further comprises a cleaning system for cleaning the membrane filtration unit; The cleaning system comprises a circulating water pump connected with the ceramic membrane assembly and used for cross-flow cleaning, a cleaning agent dosing device, and an air compressor system used for compressed air cleaning.

[0011] In an embodiment of the present application, the ceramic membrane in the ceramic membrane assembly is a silicon carbide membrane, the filter pore size of the ceramic membrane is 40-50 nm, the channel diameter of the ceramic membrane is 3-4 mm, the design filtration flux of the ceramic membrane is 50-80 L / (m 2 · h), and the working water temperature of the ceramic membrane is 30-50℃.

[0012] In an embodiment of the present application, the membrane concentration unit comprises a first-stage DTRO membrane system, an intermediate water tank, a second-stage DTRO membrane system, a carbon source storage tank, a clear liquid storage tank and a chemical cleaning agent dosing device; The first-stage DTRO membrane system, the intermediate water tank, the second-stage DTRO membrane system and the carbon source storage tank are connected in sequence, and the clear liquid storage tank is connected with the first-stage DTRO membrane system and the second-stage DTRO membrane system; The first-stage DTRO membrane system is used to preliminarily concentrate the filtrate output by the membrane filtration unit, to obtain first-stage DTRO clear liquid and first-stage DTRO concentrated liquid; the first-stage DTRO clear liquid is delivered to the clear liquid storage tank, and the first-stage DTRO concentrated liquid is delivered to the intermediate water tank; The second-stage DTRO membrane system is used to receive the first-stage DTRO concentrated liquid in the intermediate water tank, and is used to further concentrate the first-stage DTRO concentrated liquid, to obtain second-stage DTRO clear liquid and second-stage DTRO concentrated liquid; The second-stage DTRO clear liquid is delivered to the clear liquid storage tank, and the second-stage DTRO concentrated liquid is delivered to the carbon source storage tank; The chemical cleaning agent dosing device is used for dosing cleaning agents to a first DTRO membrane system and a second DTRO membrane system.

[0013] In an embodiment of the present application, the membrane concentration unit further comprises a COD online monitor connected to the concentrated liquid outlet of the second DTRO membrane system, the COD online monitor being used to detect the COD concentration of the concentrated liquid outlet of the second DTRO membrane system, to adjust the concentration multiple of the second DTRO membrane system in real time, and to adjust the COD concentration of the second DTRO concentrated liquid.

[0014] The present application has the following beneficial effects: The beer wastewater resourceization carbon source system comprises a pretreatment unit, a membrane filtration unit and a membrane concentration unit connected in sequence; the pretreatment unit is used for conditioning and precipitating the beer wastewater and obtaining a feed liquid; the membrane filtration unit is used for intercepting suspended solids and colloids in the feed liquid; and the membrane concentration unit is used for performing multi-stage concentration treatment on the filtered liquid output by the membrane filtration unit and outputting a clear liquid and a high-concentration carbon source liquid. The beer wastewater resourceization carbon source system can greatly increase the COD concentration in the carbon source, remove part of total nitrogen and total phosphorus, improve the economic value of carbon source utilization, avoid resource waste, and greatly reduce the treatment burden of a downstream sewage plant. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor.

[0016] Figure 1 The structure schematic diagram of the beer wastewater resourceization carbon source system provided by the present application. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the following will combine the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0018] Therefore, the following detailed description of the embodiments of the application provided in the drawings is not intended to limit the scope of the application claimed, but merely represents selected embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those of ordinary skill in the art without creative labor are within the scope of protection of the application.

[0019] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0020] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0021] In the description of the embodiments of the present application, it should be noted that the indicated position or position relationship is based on the position or position relationship shown in the drawings, or the position or position relationship commonly placed when the product of the application is used, or the position or position relationship commonly understood by those skilled in the art, or the position or position relationship commonly placed when the product of the application is used, only for the convenience of describing the application and simplifying the description, and is not intended to indicate or imply that the indicated device or element must have a particular position, be constructed and operated in a particular position, and therefore cannot be understood as a limitation on the application. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0022] In the description of the embodiments of the present application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set", "install", "connect" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0023] Please refer to Figure 1 The embodiment provides a beer wastewater resourceization carbon source system, which comprises a pretreatment unit, a membrane filtration unit and a membrane concentration unit connected in sequence. The pretreatment unit is used for conditioning and sedimentation of beer wastewater, and a feed liquid is obtained. The membrane filtration unit is used for intercepting suspended solids and colloids in the feed liquid. The membrane concentration unit is used for multi-stage concentration treatment of the filtrate output by the membrane filtration unit, and outputs a clear liquid and a high-concentration carbon source liquid.

[0024] The working principle of the beer wastewater resourceization carbon source system is as follows: It should be noted that the beer saccharification wastewater is mainly from the cleaning wastewater of the revolving sedimentation tank in the saccharification workshop. After the beer saccharification wastewater is collected and treated, the concentration of COD in the carbon source can be greatly increased, part of total nitrogen and total phosphorus can be removed, the economic value of carbon source utilization can be improved, and the treatment burden of the downstream sewage plant can be greatly reduced.

[0025] Moreover, the COD concentration of the saccharification wastewater is about 25000 mg / L-70000 mg / L, and the water quantity accounts for about 1.0%-2.0% of the total water quantity of the brewery. After the saccharification wastewater is collected and used to produce carbon source, the COD of the influent of the wastewater treatment system of the brewery can be reduced by about 400-600 mg / L, the carbon emission of the brewery can be reduced by about 20%-30%, and the cost of treating wastewater of the brewery can be greatly reduced.

[0026] The pretreatment unit of the beer wastewater resourceization carbon source system first cools, removes slag, adjusts quality and precipitates the beer saccharification wastewater, dewatering the solid resources such as wheat bran, and obtaining a relatively clean liquid; the membrane filtration unit uses ceramic membrane cross-flow filtration to further intercept small suspended and colloidal substances, and provides stable and low-pollution high-quality influent for the subsequent process; the membrane concentration unit finally concentrates the organic matter into high-COD carbon source products through multi-stage concentration, and the clear liquid is discharged to the wastewater treatment system for further treatment and discharge, realizing wastewater resourceization and external sale of carbon source.

[0027] Therefore, the beer wastewater resourceization carbon source system can greatly increase the concentration of COD in the carbon source, remove part of total nitrogen and total phosphorus, improve the economic value of carbon source utilization, avoid resource waste, and greatly reduce the treatment burden of the downstream sewage plant.

[0028] Further, in the present embodiment, when the pretreatment unit is configured, the pretreatment unit includes a conditioning tank and a sedimentation tank which are sequentially connected; The conditioning tank is used to adjust the water quality, water quantity and water temperature of the beer wastewater, and the treated wastewater is introduced into the sedimentation tank through a lifting pump; the sedimentation tank is used to remove the solid substances in the wastewater output by the conditioning tank, and the supernatant is introduced into the ceramic membrane influent tank.

[0029] Moreover, the pretreatment unit further includes a dewatering machine and a slag discharge pump; The dewatering machine is in communication with the sedimentation tank, and is used to dewater the solid substances separated from the sedimentation tank, and the separated press liquor is returned to the conditioning tank; the slag discharge pump is connected with the dewatering machine, and is used to discharge the separated solid substances.

[0030] The conditioning tank is used for homogenization, equalization and temperature adjustment; the temperature monitoring instrument and the cooling system are matched to maintain the optimal temperature range; the sludge discharge pump is used in linkage with the sludge interface instrument to automatically discharge sludge; the sludge interface instrument is used for real-time detection of the sludge level, and the signal controls the start and stop of the sludge discharge pump; the temperature monitoring instrument and the cooling system are used for closed-loop temperature control to prevent high temperature from reducing the service life of the equipment and causing rapid corruption of microorganisms.

[0031] In addition, the pretreatment unit further comprises a sludge interface instrument connected with the sedimentation tank, which is used to detect the height of the solid matter layer of the sedimentation tank and is electrically connected with the sludge discharge pump and the dewatering machine.

[0032] Furthermore, the pretreatment unit further comprises a temperature monitoring instrument and a cooling system connected with the conditioning tank; the temperature monitoring instrument is electrically connected with the cooling system. The temperature monitoring instrument is used to detect the temperature of the conditioning tank, and the cooling system is used to adjust the temperature of the conditioning tank.

[0033] Based on the above, the pretreatment unit has the following effects: preliminary purification of wastewater, removal of large-particle impurities, wheat bran, suspended solids and the like in the wastewater; adjustment of water quality and quantity to stabilize the water quality and temperature for subsequent membrane treatment; recovery of part of the organic matter, reuse of the expressed liquid, and improvement of resource utilization; reduction of pollution of the subsequent membrane system, and reduction of the risk of membrane pollution through sedimentation, filtration and the like.

[0034] The processing steps are as follows: collecting the saccharification wastewater into the conditioning tank; The cooling system controls the temperature of the conditioning tank and the wastewater in the conditioning tank according to the temperature data detected by the temperature monitoring instrument; the wastewater enters the sedimentation tank to separate out solid matters such as wheat bran; the solid matters are used as feed or resources after being treated by the dewatering machine; the expressed liquid is returned to the conditioning tank; the supernatant is further filtered and then enters the ceramic membrane water inlet tank of the membrane filtration unit.

[0035] Based on the structure of the above-mentioned pretreatment unit, when the membrane filtration unit is configured, the membrane filtration unit comprises a ceramic membrane water inlet tank, a water inlet pump, a filter, a ceramic membrane assembly and a water production tank which are sequentially connected; the ceramic membrane water inlet tank is used to buffer the flow to eliminate fluctuations at the front end, the water inlet pump is used to provide the pressure required for filtration, the filter is used to remove floating malt and barley particles, the circulating pump and the ceramic membrane assembly are used for cross-flow filtration, and the water production tank is used to store the filtrate to provide a stable suction port for the DTRO and also serve as a temperature adjustment.

[0036] The ceramic membrane water inlet tank is used to receive the feed liquid output by the pretreatment unit, the water inlet pump is used to pressurize the feed liquid, and the filter is used to remove floating malt and barley particles, and the feed liquid is output to the ceramic membrane assembly; the circulating pump and the ceramic membrane assembly are used for cross-flow filtration of the feed liquid to intercept suspended solids and colloids in the feed liquid, and the filtrate is introduced into the water production tank.

[0037] And the beer wastewater resourceization system for preparing carbon source further comprises a cleaning system for cleaning the membrane filtration unit; The cleaning system comprises a circulating water pump connected with the ceramic membrane assembly and used for cross-flow cleaning, a cleaning agent adding device, and an air compressor system used for compressed air cleaning.

[0038] In the configuration of the ceramic membrane assembly of the membrane filtration unit, the ceramic membrane in the ceramic membrane assembly is a silicon carbide membrane, the filtration pore size of the ceramic membrane is 40-50 nm, the channel diameter of the ceramic membrane is 3-4 mm, the designed filtration flux of the ceramic membrane is 50-80 L / (m 2 · h), and the working water temperature of the ceramic membrane is 30-50℃.

[0039] Based on the above, the membrane filtration unit has the following functions: fine filtration, removal of fine suspended solids, colloids and the like, protection of the subsequent multi-stage DTRO membrane; reduction of DTRO membrane pollution, the ceramic membrane as a pretreatment of the DTRO membrane significantly reduces the frequency of DTRO pollution; improvement of system stability, provision of stable and clean feed water, and prolongation of the service life of the DTRO membrane.

[0040] The processing steps of the membrane filtration unit are as follows: the feed liquid after pretreatment by the pretreatment unit enters the ceramic membrane feed water tank; the water pump sends water into the ceramic membrane assembly; the cross-flow filtration mode is adopted, water molecules and small molecules pass through the membrane, and the concentrated liquid returns; the produced water enters the produced water tank, ready to enter the membrane concentration unit; the membrane is cleaned regularly by the cleaning system (clean water, cleaning agent, compressed air); the air compressor system provides cleaning and pneumatic valve control air.

[0041] On the basis of the structures of the above-mentioned pretreatment unit and membrane filtration unit, in the configuration of the membrane concentration unit, the membrane concentration unit comprises a one-stage DTRO membrane system, an intermediate water tank, a two-stage DTRO membrane system, a carbon source storage tank, a clear liquid storage tank, and a chemical cleaning agent adding device; wherein the intermediate water tank is used to balance the flow of the one-stage and two-stage, the clear liquid storage tank is used to collect the two-stage DTRO clear liquid, which can be directly piped or reused in the plant, and the carbon source storage tank is used to store high-value carbon source liquid.

[0042] The one-stage DTRO membrane system, the intermediate water tank, the two-stage DTRO membrane system, and the carbon source storage tank are sequentially connected, and the clear liquid storage tank is connected with the one-stage DTRO membrane system and the two-stage DTRO membrane system; The one-stage DTRO membrane system is used to preliminarily concentrate the filtered liquid output by the membrane filtration unit, to obtain one-stage DTRO clear liquid and one-stage DTRO concentrated liquid, the one-stage DTRO clear liquid is delivered to the clear liquid storage tank, and the one-stage DTRO concentrated liquid is delivered to the intermediate water tank; The two-stage DTRO membrane system is used to receive the one-stage DTRO concentrated liquid in the intermediate water tank and further concentrate the one-stage DTRO concentrated liquid, to obtain two-stage DTRO clear liquid and two-stage DTRO concentrated liquid. The second-stage DTRO clear liquid is sent to a clear liquid storage tank, and the second-stage DTRO concentrated liquid is sent to a carbon source storage tank. The chemical cleaning agent feeding device is used to feed cleaning agents to the first-stage DTRO membrane system and the second-stage DTRO membrane system.

[0043] Moreover, the membrane concentration unit further comprises a COD online monitor connected with the concentrated liquid outlet of the second-stage DTRO membrane system, which is used to detect the COD concentration of the concentrated liquid outlet of the second-stage DTRO membrane system, so as to adjust the concentration multiple of the second-stage DTRO membrane system in real time, and further adjust the COD concentration of the second-stage DTRO concentrated liquid.

[0044] The membrane concentration unit has the following functions: concentrating organic matters, increasing the COD concentration, and preparing high-value carbon sources; separating the clear liquid and the concentrated liquid, so that the clear liquid can be treated to meet the discharge standard or be reused, and the concentrated liquid can be used as a carbon source product; and realizing resource utilization, converting wastewater into a saleable carbon source product, and reducing the treatment cost.

[0045] The processing steps of the membrane concentration unit are as follows: the filtered liquid (i.e., ceramic membrane product water) output by the membrane filtration unit enters the first-stage DTRO membrane system; after concentration, the following is obtained: first-stage DTRO clear liquid (entering a clear liquid storage tank); first-stage DTRO concentrated liquid (entering an intermediate water tank); The first-stage concentrated liquid enters the second-stage DTRO membrane system for further concentration, and the following is obtained: second-stage DTRO clear liquid (entering a clear liquid storage tank); second-stage DTRO concentrated liquid (high-COD carbon source, entering a carbon source storage tank); The clear liquid is finally discharged into a sewage treatment system; and the concentrated liquid is sold as a carbon source product; The COD online monitor is arranged to adjust the concentration multiple in real time, so as to ensure the product quality.

[0046] In summary, the working steps of the beer wastewater resource utilization carbon source preparation system are as follows: The wastewater first enters the conditioning tank, in which the water quality, water quantity, and water temperature are homogenously adjusted, and the temperature is controlled by the cooling system; the adjusted wastewater is sent into the sedimentation tank by the lifting pump; In the sedimentation tank, the solids such as wheat bran and condensed solids in the wastewater are removed by gravity settling, and the supernatant overflows to the ceramic membrane feed tank; the sludge at the bottom of the tank is sent to the dewatering machine by the sludge discharge pump, and the dried sludge after dewatering is transported out for use as feed, and the pressed liquid is returned to the conditioning tank for recycling; The liquid in the ceramic membrane feed tank is pressurized by the feed pump and then enters the filter to intercept floating malt husks, and is sent to the ceramic membrane assembly at a constant flow rate to be filtered at a cross-flow velocity, so that the suspended matters and colloids are intercepted, and the product water is temporarily stored in the product water tank; The clear liquid in the product water tank is lifted to the first-stage DTRO membrane system by the water pump, and is concentrated under pressure for the first time: the clear liquid is sent to the clear liquid storage tank, and the remaining concentrated liquid enters the intermediate water tank to balance the water quality; The concentrated liquid in the intermediate water tank is pressurized by the second water pump and enters the second DTRO membrane system for further concentration. The clear liquid separated again is collected into the clear liquid storage tank, and the concentrated liquid finally separated is sent into the carbon source storage tank as a high-value carbon source product. The COD online monitor at the concentrated liquid outlet of the second DTRO membrane system automatically adjusts the frequency of the high-pressure pump in real time according to the feedback signal to ensure the stable quality of the carbon source product.

[0047] The mixed clear liquid in the clear liquid storage tank can be directly discharged into the pipe after simple treatment or reused in the factory, realizing the high-value resource utilization and near-zero discharge of the beer saccharification wastewater.

[0048] The above is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A system for converting beer wastewater into a carbon source, characterized in that: The beer wastewater resource utilization carbon source system includes a pretreatment unit, a membrane filtration unit, and a membrane concentration unit connected in sequence. The pretreatment unit is used to condition and precipitate the beer wastewater to obtain a feed liquid; the membrane filtration unit is used to remove suspended solids and colloids in the feed liquid; and the membrane concentration unit is used to perform multi-stage concentration treatment on the filtrate output from the membrane filtration unit to output a clear liquid and a high-concentration carbon source liquid.

2. The system for resource-based carbon source production from beer wastewater according to claim 1, characterized in that: The pretreatment unit includes a regulating tank and a sedimentation tank connected in sequence; The regulating tank is used to regulate the water quality, quantity and temperature of beer wastewater, and the treated wastewater is introduced into the sedimentation tank by a booster pump; the sedimentation tank is used to remove solids from the wastewater output from the regulating tank and introduce its supernatant into the ceramic membrane inlet tank.

3. The beer wastewater resource utilization carbon source system according to claim 2, characterized in that: The pretreatment unit also includes a dewatering machine and a slag discharge pump; The dewatering machine is connected to the sedimentation tank and is used to dewater the solid matter separated from the sedimentation tank and return the separated pressing liquid to the regulating tank; the slag discharge pump is connected to the dewatering machine and is used to discharge the separated solid matter.

4. The beer wastewater resource utilization carbon source system according to claim 3, characterized in that: The pretreatment unit also includes a sludge interface meter connected to the sedimentation tank. The sludge interface meter is used to detect the height of the solid material layer in the sedimentation tank and is electrically connected to the sludge discharge pump and the dewatering machine.

5. The system for resource-based carbon source production from beer wastewater according to claim 2, characterized in that: The pretreatment unit also includes a temperature monitor and a cooling system connected to the regulating tank; the temperature monitor is electrically connected to the cooling system. The temperature monitoring instrument is used to detect the temperature of the regulating tank, and the cooling system is used to regulate the temperature of the regulating tank.

6. The system for resource-based carbon source production from beer wastewater according to claim 1, characterized in that: The membrane filtration unit includes a ceramic membrane inlet tank, an inlet pump, a filter, a ceramic membrane module, and a product water tank connected in sequence. The ceramic membrane inlet tank is used to receive the feed liquid output from the pretreatment unit. The inlet pump is used to pressurize the feed liquid and remove malt and barley particles floating on the water surface through the filter, and output the feed liquid to the ceramic membrane module. The ceramic membrane module is used to perform cross-flow filtration on the feed liquid to intercept suspended solids and colloids in the feed liquid, and introduce the filtrate into the product water tank.

7. The system for resource-based carbon source production from beer wastewater according to claim 6, characterized in that: The beer wastewater resource utilization carbon source system also includes a cleaning system for cleaning the membrane filtration unit; The cleaning system includes a circulating water pump connected to the ceramic membrane module for cross-flow cleaning, a cleaning agent dosing device, and an air compressor system for compressed air cleaning.

8. The beer wastewater resource utilization carbon source system according to claim 6, characterized in that: The ceramic membrane in the ceramic membrane assembly is a silicon carbide membrane with a filtration pore size of 40-50 nm, a channel diameter of 3-4 mm, and a designed filtration flux of 50-80 L / (m²). 2 (·h), the working water temperature of the ceramic membrane is 30℃-50℃.

9. The system for resource-based carbon source production from beer wastewater according to claim 1, characterized in that: The membrane concentration unit includes a first-stage DTRO membrane system, an intermediate water tank, a second-stage DTRO membrane system, a carbon source storage tank, a clear liquid storage tank, and a chemical cleaning agent dosing device. The first-stage DTRO membrane system, the intermediate water tank, the second-stage DTRO membrane system, and the carbon source storage tank are connected in sequence, and the clear liquid storage tank is connected to the first-stage DTRO membrane system and the second-stage DTRO membrane system; The first-stage DTRO membrane system is used to initially concentrate the filtrate output from the membrane filtration unit to obtain a first-stage DTRO clear liquid and a first-stage DTRO concentrated liquid. The first-stage DTRO clear liquid is transported to the clear liquid storage tank, and the first-stage DTRO concentrated liquid is transported to the intermediate water tank. The two-stage DTRO membrane system is used to receive the first-stage DTRO concentrate in the intermediate water tank and to further concentrate the first-stage DTRO concentrate to obtain a second-stage DTRO clear solution and a second-stage DTRO concentrate. The second-stage DTRO clarified solution is sent to the clarified solution storage tank, and the second-stage DTRO concentrated solution is sent to the carbon source storage tank; The chemical cleaning agent dosing device is used to add cleaning agents to the first-stage DTRO membrane system and the second-stage DTRO membrane system.

10. The system for resource-based carbon source production from beer wastewater according to claim 9, characterized in that: The membrane concentration unit also includes an online COD monitor connected to the concentrate outlet of the two-stage DTRO membrane system. The online COD monitor is used to detect the COD concentration at the concentrate outlet of the two-stage DTRO membrane system and to adjust the concentration factor of the two-stage DTRO membrane system in real time, thereby adjusting the COD concentration of the two-stage DTRO concentrate.

Images