CN208104180U - A kind of system of white wine wastewater processing and resource reclaim - Google Patents

Abstract

The utility model discloses a kind of processing of white wine wastewater and resource recovering system, may include the connected distribution reservoir of sequence, anaerobic tower, A²/ O biochemistry pool and dephosphorization pond, waste water enter in anaerobic tower, and the organic matter in anaerobic bacteria and waste water in anaerobic tower reacts, and generate biogas, and biogas, which enters in biogas collection device, to be recycled, and the waste water handled through anaerobic tower flows into A²In/O biochemistry pool, by organic cooperation of aeration control anaerobism, anoxic, aerobic three kinds of different environmental conditions and different types of microorganisms flora, organic matter, denitrogenation dephosphorizing are removed, from A²The waste water of/O biochemistry pool outflow enters in dephosphorization pond, chemicals dosing plant adds ammonium chloride medicament and magnesium hydroxide medicament into dephosphorization pond, form guanite, realize the recycling of P elements, guanite enters the recycling of guanite collection device, under the premise of white wine wastewater qualified discharge after processing, the solid waste obtained after processing is recycled.

Description

A system for liquor wastewater treatment and resource recovery

technical field

The utility model relates to the technical field of sewage treatment, in particular to a system for liquor wastewater treatment and resource recovery.

Background technique

Sewage treatment is the process of purifying sewage to meet the water quality requirements of a certain water body for drainage or reuse. Sewage treatment is widely used in various fields such as construction, agriculture, transportation, energy, petrochemical, environmental protection, urban landscape, medical treatment, catering, etc., and it is also increasingly entering the daily life of ordinary people. According to the classification of sewage sources, sewage treatment is generally divided into production sewage treatment and domestic sewage treatment. Production sewage includes industrial sewage, agricultural sewage and medical sewage, while domestic sewage is sewage generated in daily life, which refers to various forms of inorganic substances and A complex mixture of organic matter. According to the nature of water pollution, there are two types of water pollution: one is natural pollution; the other is man-made pollution. At present, man-made pollution is the most harmful to water bodies. The topic of water pollution is constantly being brought up, especially the issue of groundwater pollution, and people are paying more and more attention to the severity of water pollution.

During the solid-state fermentation and distillation of liquor, different concentrations of sewage will be produced. Liquor sewage has high concentration and high chroma, and the sewage has good biochemical properties. Compared with large and medium-sized wineries, small wineries have the characteristics of less investment, small scale, low level of clean production, mixed sewage, large amount of pollution per ton of wine, and serious pollution.

In order to make liquor wastewater discharge up to standard, the traditional method is to adopt the follow-up treatment of physicalization + anaerobic + aerobic + physicalization; although this process achieves the discharge of wastewater up to standard, the cost of wastewater treatment is relatively high, simply making wastewater Main pollutants such as organic matter, ammonia nitrogen, phosphorus, etc. are removed in the form of solid waste, which not only makes the cost of wastewater treatment higher but also causes secondary pollution of hazardous waste.

Therefore, how to change the present situation that the liquor wastewater treatment process is costly and prone to secondary pollution in the prior art is an urgent problem to be solved by those skilled in the art.

Utility model content

The purpose of this utility model is to provide a system for liquor wastewater treatment and resource recovery to solve the above-mentioned problems in the prior art, so that the liquor wastewater can be discharged up to the standard after treatment, and the solid waste obtained after treatment can be recycled to reduce the cost of processing Reduce cost while reducing secondary pollution.

In order to achieve the above purpose, the utility model provides the following scheme: the utility model provides a liquor wastewater treatment and resource recovery system, which includes a water distribution tank, anaerobic tower, ^A2 /O biochemical tank and phosphorus removal tank connected in sequence. The distribution pool is also connected with a liquid caustic tank, and the liquid caustic tank can put liquid caustic soda into the distribution tank, the anaerobic tower is also connected with a biogas collection device, and the ^A2 /O biochemical tank includes an aeration device , the dephosphorization tank is also connected with a dosing device, and the dosing device can add ammonium chloride medicament and magnesium hydroxide medicament to the dephosphorization tank, and the dephosphorization tank is also connected with struvite collection device.

Preferably, the liquor wastewater treatment and resource recovery system further includes a regulating tank, and the water distribution tank is connected to the regulating tank and the anaerobic tower.

Preferably, the liquor wastewater treatment and resource recovery system further includes an anaerobic sedimentation tank, the anaerobic sedimentation tank is connected to the anaerobic tower and the A ² /O biochemical tank, and the anaerobic sedimentation tank is also connected to the matching The pool is connected.

Preferably, the liquor wastewater treatment and resource recovery system further includes a secondary sedimentation tank, the secondary sedimentation tank is connected to the ^A2 /O biochemical tank and the phosphorus removal tank, and the secondary sedimentation tank is also connected to the water distribution tank, A sludge return pipe is also set between the secondary sedimentation tank and the A ² /O biochemical tank.

Preferably, the water distribution pool is connected to the anaerobic tower through a lift pump, and an outlet water return pipe is also set between the anaerobic tower and the water distribution pool.

Preferably, the water distribution tank is equipped with a temperature tester, and the water distribution tank, the anaerobic tower, the A ² /O biochemical tank and the phosphorus removal tank are all equipped with a pH tester.

Preferably, the A ² /O biochemical pool further includes a stirring device, and the stirring device is arranged at the bottom of the A ² /O biochemical pool.

Preferably, a mud-water separation device is provided in the anaerobic sedimentation tank.

Compared with the prior art, the utility model has achieved the following technical effects: the liquor wastewater treatment and resource recovery system of the utility model includes a water distribution pool, an anaerobic tower, an ^A2 /O biochemical pool, a phosphorus removal pool, and a water distribution pool connected in sequence. It is also connected with a liquid caustic pool, which can put liquid caustic soda into the water distribution pool, the anaerobic tower is also connected with a biogas collection device, the A ² /O biochemical pool includes an aeration device, and the phosphorus removal pool is also connected with a dosing device. The dosing device can add ammonium chloride and magnesium hydroxide to the phosphorus removal tank, and the phosphorus removal tank is also connected with a struvite collection device. Liquor wastewater enters the distribution tank, and liquid caustic soda is added to the distribution tank, and then the wastewater enters the anaerobic tower, where the anaerobic bacteria in the anaerobic tower react with the organic matter in the wastewater to generate biogas, which enters the biogas collection device for recovery , the wastewater treated by the anaerobic tower flows into the A ² /O biochemical pool, through aeration to control the three different environmental conditions of anaerobic, anoxic and aerobic and the organic cooperation of different types of microbial flora to remove organic matter and denitrification For phosphorus removal, the wastewater flowing out from the A ² /O biochemical tank enters the phosphorus removal tank, and the dosing device adds ammonium chloride and magnesium hydroxide chemicals to the phosphorus removal tank to form struvite and realize the recovery of phosphorus. The struvite enters the struvite collection device for recycling. On the premise that the liquor wastewater is discharged up to the standard after treatment, the solid waste obtained after treatment is recycled to reduce the treatment cost and reduce secondary pollution.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings required in the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only the present invention. For some embodiments of the invention, those skilled in the art can also obtain other drawings according to these drawings without paying creative efforts.

Fig. 1 is the schematic diagram of liquor wastewater treatment and resource recovery system of the present utility model;

Among them, 1 is water distribution tank, 2 is anaerobic tower, 3 is A ² /O biochemical tank, 4 is phosphorus removal tank, 5 is liquid alkali tank, 6 is biogas collection device, 7 is dosing device, 8 is bird droppings Rock collection device, 9 is a regulating tank, 10 is an anaerobic sedimentation tank, and 11 is a secondary sedimentation tank.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

The purpose of this utility model is to provide a system for liquor wastewater treatment and resource recovery to solve the above-mentioned problems in the prior art, so that the liquor wastewater can be discharged up to the standard after treatment, and the solid waste obtained after treatment can be recycled to reduce the cost of processing Reduce cost while reducing secondary pollution.

In order to make the above purpose, features and advantages of the utility model more obvious and understandable, the utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Please refer to FIG. 1, which is a schematic diagram of the liquor wastewater treatment and resource recovery system of the present invention.

The utility model provides a liquor wastewater treatment and resource recovery system, which comprises a sequentially connected water distribution pool 1, anaerobic tower ² , A2/O biochemical pool 3 and phosphorus removal pool 4, and the water distribution pool 1 is also connected with a liquid alkali pool 5 , the liquid caustic soda pool 5 can drop liquid caustic soda into the water distribution pool 1, the anaerobic tower 1 is also connected with a biogas collection device 6, the A2/O biochemical pool ³ includes an aeration device, and the phosphorus removal pond 4 is also connected with a dosing device 7 The dosing device 7 can add ammonium chloride and magnesium hydroxide chemicals to the phosphorus removal tank 4, and the phosphorus removal tank 4 is also connected with a struvite collection device 8.

The waste water is first passed into the distribution tank 1, and the liquid alkali tank 5 is put into the distribution tank 1, and the wastewater flowing out from the distribution tank 1 enters the anaerobic tower 2, and the anaerobic bacteria in the anaerobic tower 2 and the waste water The organic matter reacts to generate biogas, which enters the biogas collection device 6 for recovery, and the wastewater treated by the anaerobic tower 2 flows into the A ² /O biochemical pool 3, and the three different types of anaerobic, anoxic and aerobic are controlled by aeration. The environmental conditions and the organic cooperation of different types of microbial flora can remove organic matter, nitrogen and phosphorus, and the wastewater flowing out from the A ² /O biochemical pool 3 enters the phosphorus removal pool 4, and the dosing device 7 throws it into the phosphorus removal pool 4 Ammonium chloride agent and magnesium hydroxide agent are added to form struvite to realize the recovery of phosphorus element, and the struvite enters the struvite collection device 8 for recycling.

In addition, the liquor wastewater treatment and resource recovery system also includes a regulating pool 9, the water distribution pool 1 is connected to the regulating pool 9 and the anaerobic tower 2, and the regulating pool 9 plays the role of buffering and regulating the flow of wastewater.

Specifically, the liquor wastewater treatment and resource recovery system also includes an anaerobic sedimentation tank 10. The anaerobic sedimentation tank 10 is connected to the anaerobic tower ² and the A2/O biochemical tank 3. The anaerobic sedimentation tank 10 is also connected to the water distribution tank 1. The wastewater treated by the anaerobic tower 2 enters the anaerobic sedimentation tank 10 for sedimentation, the sludge flows back into the water distribution tank 1 , and the wastewater enters the A ² /O biochemical tank 3 .

More specifically, the liquor wastewater treatment and resource recovery system also includes a secondary settling tank 11, the secondary settling tank 11 is connected to the A2/O biochemical pool ³ and the phosphorus removal tank 4, the secondary settling tank 11 is also connected to the water distribution tank 1, and the secondary settling tank A sludge return pipe is also set between 11 and A ² /O biochemical tank 3, the wastewater treated by A ² /O biochemical tank 3 enters the secondary sedimentation tank 11 for sedimentation, and the sludge in the secondary sedimentation tank 11 returns to A ² The SV30 (referring to the volume percentage of the sludge after the mixed liquid in the aeration tank settles statically in the graduated cylinder for 30 minutes) in the /O biochemical tank 3 is about 50.

Among them, the water distribution tank 1 is connected to the anaerobic tower 2 through a lifting pump, and a water outlet return pipe is set between the anaerobic tower 2 and the water distribution tank 1. The COD concentration of the pool comprehensive wastewater is about 35000mg/L, and then pumped into the anaerobic tower 2 through the lift pump.

The distribution tank 1 is equipped with a temperature tester, and the distribution tank 1, anaerobic tower 2, A ² /O biochemical tank 3 and phosphorus removal tank 4 are all equipped with a pH tester, which is convenient for operators to monitor the operation status of the sewage treatment system in time.

Furthermore, the A ² /O biochemical pool 3 also includes a stirring device, which is installed at the bottom of the A ² /O biochemical pool 3 , and the stirring device can better fully contact and cooperate with the sewage and various types of biological flora.

Furthermore, a mud-water separation device is set in the anaerobic sedimentation tank 10, and the wastewater generates biogas in the anaerobic tower 2. When the wastewater flows into the anaerobic sedimentation tank 10, the biogas carries certain anaerobic bacteria into the anaerobic sedimentation tank 10 In order not to avoid pollution caused by biogas leakage, a mud-water separation device is installed in the anaerobic sedimentation tank 10 to recover anaerobic sludge and prevent secondary pollution.

Liquor wastewater enters the distribution tank 1, and liquid caustic soda is added to the distribution tank 1, and then the wastewater enters the anaerobic tower 2, where the anaerobic bacteria in the anaerobic tower 2 react with the organic matter in the wastewater to generate biogas, which enters the biogas collection Recycled in the device 6, the wastewater treated by the anaerobic tower 2 flows into the A ² /O biochemical pool 3, and the three different environmental conditions of anaerobic, anoxic and aerobic and the organic growth of different types of microbial flora are controlled by aeration. Cooperate, remove organic matter, remove nitrogen and phosphorus, the wastewater flowing out from the A2/O biochemical pool ³ enters the phosphorus removal pool 4, and the dosing device 7 adds ammonium chloride and magnesium hydroxide chemicals to the phosphorus removal pool 4, Struvite is formed to realize the recovery of phosphorus element, and the struvite enters the struvite collection device 8 for recycling.

In the liquor wastewater treatment and resource recovery system of the present utility model, the liquor wastewater enters the adjustment pool 9 and enters the water distribution pool 1 through gravity flow. The return sludge from the oxygen sedimentation tank 10 and the remaining sludge from the secondary sedimentation tank 11 are mixed evenly in the distribution tank 1 and then enter the anaerobic tower 2. At the same time, the effluent part of the anaerobic tower 2 flows back to the distribution tank 1 for back distribution so that the comprehensive wastewater of the distribution tank The COD concentration is about 35000mg/L, which is pumped into the anaerobic tower 2 through the lift pump. The anaerobic bacteria in the anaerobic tower 2 react with the sludge returned from the anaerobic sedimentation tank 10 and the secondary sedimentation tank 11 and the organic matter in the waste water to generate biogas. The biogas carries a certain amount of anaerobic bacteria and flows in with the effluent of the anaerobic tower 2 Anaerobic sedimentation tank 10, after the sludge is settled, the sludge flows back to the water distribution tank 1, and enters the anaerobic tower 2 together with the wastewater, and the sludge concentration in the anaerobic tower is kept at 50,000-80,000 mg/L, so that the anaerobic Oxygen efficiency is maintained above 90%. The pH of the effluent is kept at 7-7.5 by controlling the pH of the influent of the anaerobic tower 2, and the liquid level difference between the anaerobic tower 2 and the anaerobic sedimentation tank 10 is greater than 9m to enter a certain amount of dissolved oxygen, and the dissolved oxygen is 0.5mg After passing through the anaerobic sedimentation tank 10, the dissolved oxygen is reduced to about 0.2mg/L. At the same time, the anaerobic sludge is naturally settled in the anaerobic sedimentation tank 10, and the mud-water separation sludge returns to the distribution tank 1 and then enters the anaerobic Tower 2 holds the sludge volume of Anaerobic Tower 2.

The sewage from the anaerobic sedimentation tank ¹⁰ flows into the A2/O (anaerobic-anoxic-aerobic method, the abbreviation of biological denitrification and phosphorus removal process D) biochemical pool 3, in the A2/O biochemical pool ³ by stirring and Aeration controls anaerobic, anoxic, and aerobic three different environmental conditions and the organic combination of various types of microbial flora to remove organic matter, nitrogen, and phosphorus. At the same time, ensure that the dissolved oxygen in the aerobic section is about 3 mg/L, and use the sludge backflow of the secondary sedimentation tank 11 to maintain the SV30 of the sludge volume at about 30.

The effluent from the A ² /O biochemical tank 3 enters the secondary sedimentation tank 11, which is a mixture of mud and water. In the secondary sedimentation tank 11, the mud and water are separated, and most of the sludge returns to the A ² /O biochemical tank 3 to replenish the A ² /O biochemical tank. 3 sludge, a small part of excess sludge is returned to distribution tank 1. The effluent from the secondary sedimentation tank 11 enters the phosphorus removal tank 4, and ammonium chloride and magnesium hydroxide are added in the phosphorus removal tank 4 according to the ratio of n(N):n(P):n(Mg) of 1.3:1:1.5 , so that the phosphate in the wastewater forms insoluble granular substances under the alkaline condition of pH 8.5-9.0, and then completes the separation through natural precipitation, so that the phosphorus in the wastewater produces struvite precipitation and is discharged into the bird In the fecal recovery device 8, the waste water is discharged up to the standard. Because the effluent of A ² /O biochemical pool 3 can generally maintain a pH of about 8.6 and a temperature of about 20 degrees, it provides a stable pH and temperature environment for struvite.

Utilizing the liquor wastewater treatment and resource recovery system of the present invention, the removal rate of organic matter in the wastewater can be over 95% in the anaerobic reaction system, over 86% in the A2/O biochemical pool ³ , and over 86% in the removal rate The removal rate achieved in the phosphorus pool 4 is above 25%, so the removal rate of organic matter achieved through the whole system is above 99.5%. The anaerobic bacteria in the anaerobic tower 2 react violently with the sludge returned from the sludge to produce a large amount of biogas, and the biogas yield coefficient is 0.5-0.6m ³ biogas/kgCOD removed, realizing the recovery of biogas from liquor wastewater.

The organic matter in the wastewater treated by the anaerobic tower 2 realizes the process of producing acid and methane, so that the pH of the wastewater is maintained at 7-7.5. After passing through the aerobic environment of the A ² /O biochemical pool 3, the role of the aerobic bacteria Under the decomposition of organic matter, the pH of the wastewater rises to about 7.0-8.0. After phosphorus removal in the phosphorus removal pool 4, the pH is maintained at 7.0-8.0, thereby achieving a stable pH balance.

The COD concentration of the water entering the distribution tank 1 is about 35,000 mg/L. After being pumped into the anaerobic tower 2 through the lift pump, the COD is degraded by more than 95%, and the COD (chemical oxygen demand) concentration of the effluent of the anaerobic tower 2 is about 3,500 mg/L. . After passing through the A ² /O biochemical tank 3 and the secondary sedimentation tank 11, the COD degradation is about 86%, and the COD concentration of the effluent is about 250mg/L. After passing through the phosphorus removal tank 4, the COD degradation is about 25%, and the COD concentration of the effluent is 200mg Within /L, the discharge of organic matter in wastewater reaches the standard.

The concentrations of NH ₃ -N and TN in the wastewater are about 200mg/L and 500mg/L respectively, and after passing through the A ² /O biochemical tank 3 and the secondary sedimentation tank 11, the degradation of NH ₃ -N and TN is about 85% and over 90% respectively , the concentration of NH ₃ -N and TN in the effluent is within 30mg/L and 50mg/L, realizing the standard discharge of NH ₃ -N and TN in wastewater.

The concentration of TP in the waste water is about 200mg/L. After passing through the A ² /O biochemical pool 3 and the secondary sedimentation tank 11, the TP is degraded by more than 50%. The TP concentration in the effluent is within 100mg/L. More than 97%, the TP concentration of the effluent is within 3mg/L, and the discharge of TP in the wastewater is up to standard.

The chromaticity in the waste water is about 400mg/L. After passing through the A ² /O biochemical pool 3 and the secondary sedimentation tank 11, the chromaticity is degraded by more than 50%. The chromaticity of the effluent is within 200mg/L. About 60% or more, the chromaticity of the effluent is within 40mg/L, realizing the discharge of the chromaticity of the waste water up to the standard.

The concentration of SS in the wastewater is about 800mg/L. After passing through the A ² /O biochemical pool 3 and the secondary sedimentation tank 11, the SS is degraded by more than 75%. The SS concentration in the effluent is within 200mg/L. % or more, the SS concentration of the effluent is within 140mg/L, realizing the standard discharge of SS in wastewater.

In the utility model, specific examples have been used to illustrate the principle and implementation of the utility model, and the descriptions of the above examples are only used to help understand the method of the utility model and its core idea; meanwhile, for those of ordinary skill in the art , according to the idea of the utility model, there will be changes in the specific implementation and application range. To sum up, the contents of this specification should not be understood as limiting the utility model.

Claims (8)

1. ^A liquor wastewater treatment and resource recovery system, characterized in that: it comprises a water distribution pool, an anaerobic tower, an A2/O biochemical pool and a phosphorus removal pool connected in sequence, and the water distribution pool is also connected with a liquid alkali pool, so The liquid caustic pool can be put into the liquid caustic pool, the anaerobic tower is also connected with a biogas collection device, the ^A2 /O biochemical pool includes an aeration device, and the phosphorus removal pool is also connected with a dosing device, the dosing device can add ammonium chloride and magnesium hydroxide to the phosphorus removal tank, and the phosphorus removal tank is also connected with a struvite collection device. 2 . The liquor wastewater treatment and resource recovery system according to claim 1 , further comprising a regulating pool, the water distribution pool connecting the regulating pool and the anaerobic tower. 3 . 3. The liquor wastewater treatment and resource recovery system according to claim ¹ , further comprising an anaerobic sedimentation tank connected to the anaerobic tower and the A2/O biochemical tank, The anaerobic sedimentation tank is also connected with the water distribution tank. 4. The liquor wastewater treatment and resource recovery system according to claim ¹ , characterized in that: it also includes a secondary sedimentation tank, the secondary sedimentation tank is connected to the A2/O biochemical tank and the phosphorus removal tank, the The secondary settling tank is also connected to the water distribution tank, and a sludge return pipe is set between the secondary settling tank and the A ² /O biochemical tank. 5. The liquor wastewater treatment and resource recovery system according to claim 1, characterized in that: the water distribution pool is connected to the anaerobic tower through a lift pump, and a Outlet return pipe. 6. The liquor wastewater treatment and resource recovery system according to claim ¹ , characterized in that: the water distribution pool is equipped with a temperature tester, the water distribution pool, the anaerobic tower, the A2/O biochemical pool and The phosphorus removal pools are all equipped with pH testers. 7. The liquor wastewater treatment and resource recovery system according to claim 1, characterized in that: the A ² /O biochemical pool further includes a stirring device, and the stirring device is arranged at the bottom of the A ² /O biochemical pool . 8. The liquor wastewater treatment and resource recovery system according to claim 3, characterized in that: a mud-water separation device is installed in the anaerobic sedimentation tank.