CN219567732U

CN219567732U - Making wine effluent treatment plant

Info

Publication number: CN219567732U
Application number: CN202223393094.2U
Authority: CN
Inventors: 郭毅; 刘雪菲
Original assignee: Jiangsu Water Control Environmental Protection Technology Co ltd
Current assignee: Jiangsu Water Control Environmental Protection Technology Co ltd
Priority date: 2022-12-15
Filing date: 2022-12-15
Publication date: 2023-08-22
Anticipated expiration: 2032-12-15

Abstract

The utility model discloses a brewing wastewater treatment device which comprises a reaction tower, a liquid inlet pipe, an ozone generator, an ozone inlet pipe, an ozone exhaust pipe, an air pump, an ozone return pipe and a one-way valve, wherein one end of the ozone exhaust pipe is connected to the top end of the reaction tower; one end of the ozone return pipe is connected with the ozone exhaust pipe, the other end is connected with the outlet of the one-way valve, and the air pump is connected with the middle part of the ozone return pipe. The wastewater reacts with ozone, and cyclic refractory organic pollutants in the brewing wastewater react with ozone to be subjected to ring opening oxidation to form aliphatic organic compounds with low biotoxicity, micromolecular organic amine and nitrate nitrogen. The biodegradability of the brewing wastewater is obviously improved, and the brewing wastewater has the characteristic of low carbon-nitrogen ratio. Based on the water production characteristics, the advanced degradation treatment is carried out on the pollutants such as the residual micromolecular organic amine, inorganic nitrogen oxide and the like in the water produced by the catalytic oxidation of ozone by adopting a short-cut nitrification combined heterotrophic-sulfur autotrophic denitrification process with low requirements on carbon sources.

Description

Making wine effluent treatment plant

Technical Field

The utility model relates to a brewing wastewater treatment device, and belongs to the field of brewing wastewater treatment devices.

Background

Compared with the waste water of the strong aromatic Chinese spirits, the waste water generated in the brewing process of the strong aromatic Chinese spirits has different sources and pollutant components, and is generally difficult to rely on the biodegradation process only. The production process of the Maotai-flavor white spirit can be simply summarized into 2 times of grain feeding, 9 times of steaming, 8 times of saccharification and fermentation and 7 times of wine taking, and the waste water pollution sources comprise grain bottom steaming water, flushing water of equipment, printing yeast waste water, grain soaking water and yellow water generated by cellar fermentation. The wastewater basically has the characteristic of intermittent discharge along with actual production conditions, and particularly has large impact on a biochemical system when the wastewater containing the difficult biodegradable organic matters is discharged instantaneously at high concentration, so that pollution discharge is easy to cause and is not up to standard. Yellow water is a byproduct at the bottom of a pit and is a yellow brown viscous liquid, and the yellow water contains substances such as alcohols, acids, aldehydes, esters and the like, beneficial microorganisms domesticated in a specific environment in the pit for a long time, sugar substances, nitrogen-containing compounds and the like. The waste water contains organic matters which are difficult to biodegrade. Due to the characteristics of substances contained in the wastewater, the COD, chromaticity and total nitrogen of the wastewater treated by the existing water treatment facilities, particularly the water treatment facilities only adopting the biochemical water treatment process cannot completely meet the national standard.

The direct discharge of new enterprises in the current sewage discharge standard GB27631-2011 in the industry prescribes more severe special discharge limit value, wherein COD is less than 50mg/L, chromaticity is less than 20, ammonia nitrogen is less than 5mg/L, total nitrogen is less than 15mg/L, and the standard discharge amount of fermented alcohol enterprise unit products is 30m ³ And/t. This makes new and old enterprises challenging to expand production, even for brewing enterprises with existing water treatment facilities, the technological means of upgrading and reforming with economy are favored by the market. Patent CN114538711a describes a process of disinfection of artificial wetland by natural sedimentation, microbial degradation, membrane filtration and C-rays. The process has good warp effectBut the process is very economical, wherein the microorganism treatment takes 30-70 hours, especially the residence time in the artificial wetland is 15-22 days. Patent CN114538677a describes a advanced oxidation process for treating this waste water by combining ozone catalytic oxidation with electrocatalytic oxidation, and both processes essentially use hydroxyl radicals with strong oxidability to treat refractory organic matters in the waste water, but rely solely on advanced oxidation process to treat organic pollutants with better biochemical property in the waste water, so that the cost advantage is lower. Patent CN114105415A describes a process for pretreating brewing yellow water by combining ozone with iron-carbon micro-electrolysis, anaerobic biochemical and ozone catalytic oxidation. Compared with the traditional pretreatment process of flocculation precipitation, decoloration, denitrification and dephosphorization, the advanced oxidation has no cost advantage when being used as the pretreatment process of high-concentration organic matter wastewater, and has no selectivity when degrading organic matters, and a large amount of high-concentration organic matters which are easy to be biologically degraded consume ozone with high cost. Patent CN113620541A describes a method for cooperatively treating brewing wastewater and low-carbon domestic sewage, and aims to improve the problem of low denitrification efficiency of the domestic sewage with low C/N ratio by using the brewing wastewater as a carbon source. Although the patent does not mention the strong-flavor or Maotai-flavor brewing wastewater, the latter contains partial biodegradable organic matters, and the Maotai-flavor liquor wastewater itself also contains high-concentration ammonia nitrogen and has the denitrification problem. Patent CN113620538A describes a treatment process of waste water at the bottom of a soy sauce type pit, which has a longer treatment flow and can be simply summarized as a process of primary anaerobic, anoxic and aerobic, and after catalytic oxidation by ozone, the waste water enters a process of secondary anaerobic, anoxic and aerobic. The process adds advanced oxidation between two stages of biochemical treatment to treat high concentration organic pollutant in Maotai-flavor wine waste water only partially biodegradable.

Therefore, in order to solve the above-mentioned deficiencies of the prior art, how to treat substances with complex components in the Maotai-flavor brewing wastewater is a technical problem that needs to be solved by those skilled in the art.

Disclosure of Invention

In order to overcome the defects, the utility model aims to provide a wastewater treatment device which can effectively reduce the carbon nitrogen ratio of brewing wastewater and deeply remove COD and total nitrogen in the wastewater.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the brewing wastewater treatment device comprises a centrifugal pump, a second infusion tube, a first filter tank, a third infusion tube, a second filter tank and a fourth infusion tube, wherein a filler layer containing nitrifying bacteria is arranged in the first filter tank, and a heterotrophic denitrification filler layer and a sulfur autotrophic filler layer are arranged in the second filter tank from top to bottom; one end of the second infusion tube is connected with the bottom of the first filter, one end of the third infusion tube is connected with the top of the first filter, and the other end of the third infusion tube is connected with the bottom of the second filter; one end of the fourth infusion tube is connected to the top end of the second filter tank;

the brewing wastewater treatment device further comprises a reaction tower, a liquid inlet pipe, an ozone generator, an ozone inlet pipe, an ozone exhaust pipe, an air pump, an ozone return pipe and a one-way valve, wherein the liquid inlet pipe is connected to the upper part of the reaction tower, the ozone generator is connected with the titanium alloy perforation gas distribution device at the bottom of the reaction tower through the ozone inlet pipe, two-stage ozone catalytic oxidation filling materials are filled in the reaction tower from top to top, the one-way valve is arranged in the middle of the ozone inlet pipe, and one end of the ozone exhaust pipe is connected to the top end of the reaction tower; one end of the ozone return pipe is connected with the ozone exhaust pipe, the other end of the ozone return pipe is connected with the outlet of the one-way valve, and the air pump is connected to the middle part of the ozone return pipe; the centrifugal pump pumps the wastewater which is subjected to catalytic degradation at the lower part of the reaction tower into a subsequent filter tank, and the wastewater is discharged after sequentially passing through the second infusion tube, the first filter tank, the third infusion tube and the second filter tank.

In order to fully catalyze the oxidation of the brewing wastewater, the utility model is further provided with the following steps: the brewing wastewater treatment device also comprises a reflux pump and a waste liquid reflux pipe, wherein one end of the waste liquid reflux pipe is connected with the liquid inlet pipe, and the other end of the waste liquid reflux pipe is connected with the lower part of the reaction tower; the reflux pump is arranged in the middle of the waste liquid reflux pipe. Waste liquid at the bottom of the reaction tower is lifted to the top of the reaction tower through a reflux pump, flows through the inside of the reaction tower again, and the brewing wastewater fully reacts with ozone.

The wastewater treatment effect is different due to the different ozone, COD value, nitrogen and phosphorus contents of the wastewater of different batches, and the utility model is further provided with the following steps: the brewing wastewater treatment device further comprises a first infusion tube and a transfer tank, wherein one end of the first infusion tube is connected with the bottom of the reaction tower, and the other end of the first infusion tube is connected with the transfer tank; the other end of the second infusion tube is connected with the transfer pool, and the centrifugal pump is arranged in the middle of the second infusion tube. The transfer pond mixes the waste water of different batches, and ozone, COD value, nitrogen, phosphorus content equilibrium among them are favorable to follow-up purification treatment.

The utility model is further provided with: and a heater is arranged in the transfer pool. The heater makes the temperature of the brewing wastewater in the transfer tank rise, ozone is heated to decompose or overflows from the transfer tank, and the influence of ozone on the first filter tank and the second filter tank is eliminated.

In order to backwash the first filter and the second filter, the utility model is further arranged as follows: the brewing wastewater treatment device further comprises a back flushing pump, a first back flushing pipe, a second back flushing pipe and a waste discharge valve, wherein one end of the first back flushing pipe is connected with the fourth infusion pipe, the other end of the first back flushing pipe is connected with the top end of the second filter tank, and the back flushing pump is arranged in the middle of the first back flushing pipe; one end of the second back flushing pipe is connected with an outlet of the back flushing pump, and the other end of the second back flushing pipe is connected with the top end of the first filter tank.

The utility model is further provided with: the other end of the ozone exhaust pipe is connected with an ozone digestion device.

Compared with the prior art, the utility model has the beneficial effects that: before the wastewater is treated by the first filter tank and the second filter tank, the wastewater is subjected to ozone catalytic oxidation reaction, and the amino aromatic compounds, azido compounds, substituent pyridine and other annular refractory organic pollutants in the wastewater react with ozone to be subjected to ring opening oxidation to form aliphatic organic compounds with low biological toxicity, micromolecular organic amine and nitrate nitrogen. The biodegradability of the brewing wastewater after the ozone oxidation catalytic treatment is obviously improved, and the brewing wastewater has the characteristic of low carbon-nitrogen ratio. And then the brewing wastewater enters a first filter tank to contact nitrifying bacteria, so that the accumulation of nitrite is increased. And then, the brewing wastewater enters a second filter tank, and the COD removal and denitrification reactions are synchronously coupled under the action of the heterotrophic denitrification filler layer and the sulfur autotrophic filler layer. And (5) deeply removing COD and total nitrogen, and ensuring that the water quality reaches the standard.

Drawings

FIG. 1 is a schematic diagram of a brewing wastewater treatment apparatus according to a preferred embodiment of the present utility model.

In the figure: 1. a reaction tower; 2. an ozone generator; 3. an ozone digestion device; 4. an air pump; 5. a transfer pool; 6. a one-way valve; 7. a centrifugal pump; 8. a first filter; 9. a second filter tank; 10. a backwash pump; 11. a first backwash pipe; 12. a second backwash tube; 13. a return pump; 14. a waste valve; 15. high-efficiency salt-tolerant catalyst SR09; 16. organic amine high-efficiency degradation catalyst NS02; 17. a gas distribution device; 21. a liquid inlet pipe; 22. a waste liquid return pipe; 23. an ozone inlet pipe; 24. an ozone exhaust pipe; 25. an ozone return pipe; 26. a first infusion tube; 27. a second infusion tube; 28. a third infusion tube; 29. a fourth infusion tube; 51. a heater; 81. a nitrifying bacteria filler layer; 91. heterotrophic denitrification filler layer; 92. sulfur autotrophic fillers.

Detailed Description

The preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present utility model.

Referring to fig. 1, a brewing wastewater treatment device in this embodiment includes a centrifugal pump 7, a second infusion tube 27, a first filter 8, a third infusion tube 28, a second filter 9 and a fourth infusion tube 29, wherein a filler layer 81 containing nitrifying bacteria is arranged in the first filter 8, and a heterotrophic denitrification filler layer 91 and a sulfur autotrophic filler layer 92 are arranged in the second filter 9 from top to bottom; one end of the second infusion tube 27 is connected with the bottom of the first filter tank 8, one end of the third infusion tube 28 is connected with the top of the first filter tank 8, and the other end is connected with the bottom of the second filter tank 9; one end of the fourth infusion tube 29 is connected to the top end of the second filter tank 9;

the brewing wastewater treatment device further comprises a reaction tower 1, a liquid inlet pipe 21, an ozone generator 2, an ozone inlet pipe 23, an ozone exhaust pipe 24, an air pump 4, an ozone return pipe 25 and a one-way valve 6, wherein the liquid inlet pipe 21 is connected to the upper part of the reaction tower 1, the ozone generator 2 is connected with a perforated gas distribution device 17 made of titanium alloy materials at the bottom of the reaction tower 1 through the ozone inlet pipe 23, a porous supporting layer is arranged on the gas distribution device 17 and used for supporting a two-stage efficient ozone catalytic oxidation catalyst from bottom to top, the volume ratio of the two-stage efficient ozone catalytic oxidation catalyst is 1:1, the ozone catalyst is an organic amine efficient degradation catalyst NS0216 at the next stage, the upper stage is an efficient salt-tolerant catalyst SR0915, the one-way valve 6 is arranged in the middle of the ozone inlet pipe 23, and one end of the ozone exhaust pipe 24 is connected to the top end of the reaction tower 1; one end of an ozone return pipe 25 is connected with an ozone exhaust pipe 24, the other end of the ozone return pipe is connected with the outlet of the one-way valve 6, and an air pump 4 is connected to the middle part of the ozone return pipe 25; the centrifugal pump 7 pumps out the brewing wastewater at the bottom of the reaction tower 1, and the brewing wastewater is discharged after passing through the second infusion tube 27, the first filter tank 8, the third infusion tube 28 and the second filter tank 9 in sequence.

The brewing wastewater treatment device also comprises a reflux pump 13 and a waste liquid reflux pipe 22, wherein one end of the waste liquid reflux pipe 22 is connected with a liquid inlet pipe 21, and the other end is connected with the lower part of the reaction tower 1; the return pump 13 is disposed in the middle of the waste liquid return pipe 22. Waste liquid at the bottom of the reaction tower 1 is lifted to the top of the reaction tower 1 through a reflux pump 13, flows through the inside of the reaction tower 1 again, and the brewing wastewater fully reacts with ozone.

The brewing wastewater treatment device also comprises a first infusion tube 26 and a transfer tank 5, wherein one end of the first infusion tube 26 is connected with the bottom of the reaction tower 1, and the other end of the first infusion tube is connected with the transfer tank 5; the other end of the second infusion tube 27 is connected with the transfer tank 5, and the centrifugal pump 7 is arranged in the middle of the second infusion tube 27.

A heater 51 is provided in the relay tank 5. The heater 51 makes the temperature of the brewing wastewater in the transfer tank 5 rise, ozone is decomposed by heating or overflows from the transfer tank 5, and the influence of ozone on the first filter tank 8 and the second filter tank 9 is eliminated.

The brewing wastewater treatment device also comprises a back flush pump 10, a first back flush pipe 11, a second back flush pipe 12 and a waste discharge valve 14, wherein one end of the first back flush pipe 11 is connected with a fourth infusion pipe 29, the other end of the first back flush pipe is connected with the top end of the second filter tank 9, and the back flush pump 10 is arranged in the middle of the first back flush pipe 11; one end of the second back flushing pipe 12 is connected with the outlet of the back flushing pump 10, and the other end is connected with the top end of the first filter tank 8. The other end of the ozone exhaust pipe 24 is connected with an ozone digestion device 3.

In summary, the principle of the brewing wastewater treatment device shown in the utility model is as follows: before the wastewater is treated by the first filter tank 8 and the second filter tank 9, the wastewater and ozone are mixed in the reaction tower 1, and cyclic refractory organic pollutants such as amino aromatic compounds, azido compounds, substituent pyridine and the like in the brewing wastewater react with ozone and are subjected to ring opening oxidation to form aliphatic organic compounds with low biotoxicity, micromolecular organic amine and nitrate nitrogen. The biodegradability of the brewing wastewater after the ozone oxidation catalytic treatment is effectively improved, and the brewing wastewater has the advantage of low carbon-nitrogen ratio. And then the brewing wastewater enters a first filter tank 8 to contact nitrifying bacteria, so that the accumulation of nitrite is increased. And then, the brewing wastewater enters a second filter tank 9, and the COD removal and denitrification reactions are synchronously coupled under the action of a heterotrophic denitrification filler layer 91 and a sulfur autotrophic filler layer 92. And (5) deeply removing COD and total nitrogen, and ensuring that the water quality reaches the standard.

The reflux pump 13 and the waste liquid reflux pipe 22 flow the brewing wastewater through the reaction tower 1 again, and fully oxidize and catalyze the brewing wastewater. The transfer tank 5 mixes the wastewater of different batches, wherein the ozone, COD value, nitrogen and phosphorus content are balanced, which is beneficial to the subsequent purification treatment. Meanwhile, the transfer tank 5 can continuously receive the wine making waste liquid discharged from the reaction tower 1, and the reliability of the whole device is higher.

By backwashing the first filter tank 8 and the second filter tank 9 by using the backwash pump 10, the first backwash pipe 11, the second backwash pipe 12 and the waste discharge valve 14, impurities and backwash water in the second filter tank 9 flow into the first filter tank 8 through the third transfer pipe 28, and impurities and backwash water in the second filter tank 9 are discharged through the waste discharge valve 14.

The above embodiments are only for illustrating the technical concept and features of the present utility model, and are intended to enable those skilled in the art to understand the content of the present utility model and to implement the same, but are not intended to limit the scope of the present utility model, and all equivalent changes or modifications made according to the spirit of the present utility model should be included in the scope of the present utility model.

Claims

1. The brewing wastewater treatment device comprises a centrifugal pump, a second infusion tube, a first filter tank, a third infusion tube, a second filter tank and a fourth infusion tube, wherein a filler layer containing nitrifying bacteria is arranged in the first filter tank, and a heterotrophic denitrification filler layer and a sulfur autotrophic filler layer are arranged in the second filter tank from top to bottom; one end of the second infusion tube is connected with the bottom of the first filter, one end of the third infusion tube is connected with the top of the first filter, and the other end of the third infusion tube is connected with the bottom of the second filter; one end of the fourth infusion tube is connected to the top end of the second filter tank;

the brewing wastewater treatment device is characterized by further comprising a reaction tower, a liquid inlet pipe, an ozone generator, an ozone inlet pipe, an ozone exhaust pipe, an air pump, an ozone return pipe and a one-way valve, wherein the liquid inlet pipe is connected to the upper part of the reaction tower, the ozone generator is connected with a perforated gas distribution device made of titanium alloy materials at the bottom of the reaction tower through the ozone inlet pipe, a porous supporting layer is arranged on the gas distribution device, the one-way valve is arranged in the middle of the ozone inlet pipe, and one end of the ozone exhaust pipe is connected to the top end of the reaction tower; one end of the ozone return pipe is connected with the ozone exhaust pipe, the other end of the ozone return pipe is connected with the outlet of the one-way valve, and the air pump is connected to the middle part of the ozone return pipe; sequentially passing through the second infusion tube, the first filter tank, the third infusion tube and the second filter tank and then discharging.

2. The apparatus according to claim 1, further comprising a reflux pump and a waste liquid reflux pipe, wherein one end of the waste liquid reflux pipe is connected to the liquid inlet pipe, and the other end is connected to the upper part of the reaction tower; the reflux pump is arranged in the middle of the waste liquid reflux pipe.

3. The brewing wastewater treatment device according to claim 2, further comprising a first infusion tube and a transfer tank, wherein one end of the first infusion tube is connected with the bottom of the reaction tower, and the other end is connected with the transfer tank; the other end of the second infusion tube is connected with the transfer pool, and the centrifugal pump is arranged in the middle of the second infusion tube.

4. A brewing wastewater treatment device according to claim 3, wherein a heater is arranged in the transfer tank.

5. The brewing wastewater treatment device according to claim 4, further comprising a backwash pump, a first backwash pipe, a second backwash pipe and a waste discharge valve, wherein one end of the first backwash pipe is connected with the fourth infusion pipe, the other end is connected with the top end of the second filter tank, and the backwash pump is arranged in the middle of the first backwash pipe; one end of the second back flushing pipe is connected with an outlet of the back flushing pump, and the other end of the second back flushing pipe is connected with the top end of the first filter tank.

6. The brewing wastewater treatment device according to claim 5, wherein the other end of the ozone exhaust pipe is connected with an ozone digestion device.