CN212713164U - High concentration ethanol effluent disposal system - Google Patents
High concentration ethanol effluent disposal system Download PDFInfo
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- CN212713164U CN212713164U CN202021358865.2U CN202021358865U CN212713164U CN 212713164 U CN212713164 U CN 212713164U CN 202021358865 U CN202021358865 U CN 202021358865U CN 212713164 U CN212713164 U CN 212713164U
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Abstract
The utility model provides a high concentration ethanol effluent disposal system, including the pretreatment unit, biochemical unit and the advanced treatment unit that connect gradually, the system still includes the ethanol recovery unit of ethanol in retrieving waste water through heating separation and condensation, the water inlet of ethanol recovery unit is connected with the delivery port of high concentration ethanol waste water, and the delivery port of ethanol recovery unit is connected with the water inlet of pretreatment unit. The chemical separation technology is utilized in wastewater treatment, and most of solvent ethanol is recycled and reused by adopting the ethanol recovery unit, so that the production cost is reduced, and the resource utilization maximization is ensured.
Description
Technical Field
The utility model relates to a pharmacy trade waste water treatment technical field especially relates to a high concentration ethanol effluent disposal system.
Background
The wastewater in the traditional Chinese medicine pharmaceutical industry has the characteristics of small wastewater amount, high organic pollutant content, large water quality change and the like. At present, biochemical treatment after dilution is generally adopted for treating the wastewater containing high-concentration ethanol, but due to the problems of design of partial sewage treatment facilities, a biochemical system cannot bear load impact of the high-concentration ethanol wastewater, and therefore, optimization measures are required to be adopted to treat the wastewater to reach the standard.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a high concentration ethanol effluent disposal system, the ethanol in the waste water of being convenient for is retrieved to make waste water treatment up to standard.
Based on the above-mentioned purpose, the utility model provides a high concentration ethanol effluent disposal system, including the pretreatment unit, biochemical unit and the advanced treatment unit that connect gradually, the system still includes the ethanol recovery unit of ethanol in retrieving waste water through heating separation and condensation, the water inlet of ethanol recovery unit is connected with the delivery port of high concentration ethanol waste water, and the delivery port of ethanol recovery unit is connected with the water inlet of pretreatment unit.
The ethanol recovery unit comprises an ethanol condensation collection mechanism and a heating separation mechanism which is used for heating, evaporating and guiding the wastewater to the ethanol condensation collection mechanism and guiding the separated wastewater to the pretreatment unit.
The heating and separating mechanism comprises a heating chamber and an evaporation chamber, the heating chamber is provided with a wastewater inlet, a water outlet of the heating chamber is connected with a water inlet of the evaporation chamber, a gas outlet of the evaporation chamber is connected with the condensation collecting mechanism, and a water outlet of the evaporation chamber is connected with a water inlet of the pretreatment unit.
The condensation collecting mechanism comprises a flat heat exchanger and a collector, an air inlet of the flat heat exchanger is connected with an air outlet of the evaporation chamber, and a liquid outlet of the flat heat exchanger is connected with the collector.
The condensation collecting mechanism comprises a condenser and a collecting tank, wherein an air inlet of the condenser is connected with an air outlet of the evaporation chamber, and a liquid outlet of the condenser is connected with the collecting tank.
The evaporation chamber is connected with the water inlet of the heating chamber through a return pipe.
The pretreatment unit comprises a grating machine, a coagulation tank and a sedimentation tank, a water outlet of the ethanol recovery unit is connected with a water inlet of the grating machine, and a water outlet of the grating machine is connected with a water inlet of the coagulation tank.
The biochemical unit comprises a hydrolysis acidification tank, an aerobic biological fluidized bed and an aerobic biological oxidation tank which are connected in sequence, and a water inlet of the hydrolysis acidification tank is connected with a supernatant water outlet of the pretreatment unit.
The advanced treatment unit is an activated carbon adsorption device, a Fenton pool or an ozone oxidation pool.
The system also comprises a sludge treatment unit, and the pretreatment unit and the biochemical unit are both connected with the sludge treatment unit.
The utility model has the advantages that:
the chemical separation technology is utilized in wastewater treatment, and most of solvent ethanol is recycled and reused by adopting the ethanol recovery unit, so that the production cost is reduced, and the resource utilization maximization is ensured.
The method combines chemical separation, biochemistry and advanced oxidation treatment, fully exerts respective advantages, saves the wastewater treatment cost to the maximum extent on the basis of ensuring solvent recovery and further removing organic matters, and ensures that the wastewater reaches the standard and is discharged.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a process flow diagram of the present invention;
FIG. 2 is a process diagram of the ethanol recovery unit of the present invention
FIG. 3 is a process diagram of a buffer tank disposed in an ethanol recovery unit.
1. A heating chamber; 2. an evaporation chamber; 3. a flat plate heat exchanger; 4. a collector; 5. and (5) caching a tank.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings.
It should be noted that unless otherwise defined, technical or scientific terms used in the embodiments of the present invention should have the ordinary meaning as understood by those having ordinary skill in the art to which the present disclosure belongs. The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
As shown in fig. 1 to 3, a high concentration ethanol wastewater treatment system comprises a pretreatment unit, a biochemical unit and an advanced treatment unit which are connected in sequence, wherein the pretreatment unit is mainly used for removing suspended matters and residues in wastewater, the biochemical unit is used for removing organic matters in wastewater, the advanced treatment unit further removes organic matters, the system also comprises an ethanol recovery unit which recovers ethanol in wastewater through heating separation and condensation, a water inlet of the ethanol recovery unit is connected with a water outlet of the high concentration ethanol wastewater, and a water outlet of the ethanol recovery unit is connected with a water inlet of the pretreatment unit. Wherein, the processing unit, the biochemical unit and the advanced processing unit can be realized by adopting the structure in the prior art. Through the setting of this processing system, utilize chemical separation technique at waste water treatment, retrieve reuse with most solvent ethanol through adopting ethanol recovery unit, reduced manufacturing cost, guaranteed the utilization of resources maximize.
The ethanol recovery unit comprises an ethanol condensation collection mechanism and a heating separation mechanism which is used for heating, evaporating and guiding the wastewater to the ethanol condensation collection mechanism and guiding the separated wastewater to the pretreatment unit. And the heating separation mechanism is used for heating the wastewater and evaporating the ethanol in the wastewater. The ethanol condensation collection mechanism is used for condensing and recycling ethanol evaporated from the wastewater.
The heating separation mechanism can be realized by adopting a conventional heating tank, the top of the heating tank is provided with a gas outlet, the bottom of the heating tank is provided with a water outlet, a heater is arranged inside the heating tank, the ethanol is evaporated after the heating of the heating tank is ensured, and the mechanism is collected by guiding condensation from the gas outlet at the top. Preferably, the heating separation mechanism comprises a heating chamber 1 and an evaporation chamber 2, the heating chamber 1 is provided with a wastewater inlet, a water outlet of the heating chamber 1 is connected with a water inlet of the evaporation chamber 2, a gas outlet of the evaporation chamber 2 is connected with the condensation collection mechanism, and a water outlet of the evaporation chamber 2 is connected with a water inlet of the pretreatment unit. When the device is specifically arranged, the heating chamber and the evaporation chamber adopt steam heating, and the evaporation temperature is controlled to be 80-90 ℃. The water outlet of the heating chamber is connected with the water inlet of the evaporation chamber through a water pipeline, the gas outlet of the evaporation chamber is connected with the condensation collecting mechanism through a gas pipeline, and the liquid outlet of the evaporation chamber is connected with the corresponding structure of the pretreatment unit through a water pipe.
In order to facilitate the condensation and collection of ethanol, as a preferred scheme, as shown in fig. 2, the condensation and collection mechanism comprises a flat heat exchanger 3 and a collector 4, an air inlet of the flat heat exchanger 3 is connected with an air outlet of the evaporation chamber 2, and a liquid outlet of the flat heat exchanger 3 is connected with the collector 4. The flat plate heat exchanger adopts circulating water as a cooling medium. The collector can adopt a collecting tank or a water receiver and the like. In order to facilitate the steam generated by the evaporation chamber to enter the flat plate heat exchanger after being buffered so as to avoid the phenomenon that the steam enters the flat plate heat exchanger too fast and cannot reach better condensation, a steam buffer tank 5 (a water receiver can also be adopted) can be arranged between the evaporation chamber and the flat plate heat exchanger. The bottom of the buffer tank is provided with a water outlet, the bottom wastewater and the low-concentration wastewater are mixed and enter the pretreatment unit, and then the subsequent water treatment processes are sequentially carried out.
As another feasible scheme, the condensation collection mechanism comprises a condenser and a collection tank, wherein an air inlet of the condenser is connected with an air outlet of the evaporation chamber, and a liquid outlet of the condenser is connected with the collection tank. The condenser can adopt a tubular condenser, and adopts cooling circulating water as a cooling medium.
As a further improvement, the evaporation chamber is connected with the water inlet of the heating chamber through a return pipe. Through the arrangement of the return pipe, partial waste water in the evaporation chamber can be returned to the heating chamber for heating, and further a small amount of residual ethanol is subjected to cyclic heating evaporation again, so that the reflux rate of the ethanol is increased.
In order to facilitate the removal of the medicine residues and the removal of suspended matters in the wastewater, the pretreatment unit in the system comprises a grating machine, a coagulation tank and a sedimentation tank, the water outlet of the ethanol recovery unit is connected with the water inlet of the grating machine, and the water outlet of the grating machine is connected with the water inlet of the coagulation tank. Specifically, the dregs in the wastewater are removed through a grating, and most of suspended SS in the wastewater is removed through adding PAC medicament. And the supernatant treated by the coagulation tank and the sedimentation tank enters a subsequent biochemical unit for further treatment.
The biochemical unit comprises a hydrolysis acidification tank, an aerobic biological fluidized bed and an aerobic biological oxidation tank which are connected in sequence, and a water inlet of the hydrolysis acidification tank is connected with a supernatant water outlet of the pretreatment unit. The hydrolysis acidification tank, the aerobic biological fluidized bed and the aerobic biological oxidation tank are combined and used in the prior art, so that a better treatment effect can be achieved, and the content of organic matters in wastewater is reduced.
The advanced treatment unit can be one of an activated carbon adsorption device, a Fenton pool or an ozone oxidation pool, and aims to further oxidize and treat organic pollutants and the like in the wastewater so that the finally treated wastewater reaches the discharge standard.
In order to facilitate the treatment of sludge generated in the wastewater treatment system, the system also comprises a sludge treatment unit, and the pretreatment unit and the biochemical unit are both connected with the sludge treatment unit. The sludge treatment unit can be realized by adopting the existing sludge discharge structure that a sludge discharge pipeline is arranged at the bottom of the pretreatment unit, and a sludge discharge pipeline, a blow-down valve and the like are arranged at the bottom of each structure of the biochemical unit.
The wastewater treatment system is used for treating the Chinese herbal medicine production wastewater of an enterprise, and the wastewater mainly contains high-concentration ethanol, other organic matters in the herbal medicine cooking process and the like. Firstly, the wastewater is recycled by an ethanol recovery unit, the temperature of an evaporation chamber is controlled by a heating chamber to evaporate most ethanol at about 80 ℃, and the ethanol is condensed and then the hydrous ethanol is recovered in a collector. Then the wastewater at the bottom of the buffer tank (water receiver) and the low-concentration wastewater are mixed and sequentially enter a pretreatment unit and a biochemical unit, so that the COD of the wastewater is finally less than 300mg/L to meet the condition of entering an advanced treatment unit, and the COD of the wastewater is finally reduced by below 60mg/L in the advanced treatment unit by adopting a Fenton oxidation technology to meet the direct discharge standard.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to these examples; within the idea of the invention, also technical features in the above embodiments or in different embodiments can be combined, steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.
The present embodiments are intended to embrace all such alternatives, modifications and variances which fall within the broad scope of the appended claims. Therefore, any omission, modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (10)
1. The utility model provides a high concentration ethanol effluent disposal system, is including the pretreatment unit, biochemical unit and the advanced treatment unit that connect gradually, its characterized in that, the system still includes the ethanol recovery unit of retrieving ethanol in the waste water through heating separation and condensation, the water inlet of ethanol recovery unit is connected with the delivery port of high concentration ethanol waste water, and the delivery port of ethanol recovery unit is connected with the water inlet of pretreatment unit.
2. The high-concentration ethanol wastewater treatment system as claimed in claim 1, wherein the ethanol recovery unit comprises an ethanol condensation collection mechanism and a heating separation mechanism for heating and evaporating wastewater to the ethanol condensation collection mechanism and guiding separated wastewater to the pretreatment unit.
3. The high-concentration ethanol wastewater treatment system of claim 2, wherein the heating separation mechanism comprises a heating chamber and an evaporation chamber, the heating chamber is provided with a wastewater inlet, a water outlet of the heating chamber is connected with a water inlet of the evaporation chamber, a gas outlet of the evaporation chamber is connected with the condensation collection mechanism, and a water outlet of the evaporation chamber is connected with a water inlet of the pretreatment unit.
4. The high-concentration ethanol wastewater treatment system according to claim 3, wherein the condensation collection mechanism comprises a flat plate heat exchanger and a collector, an air inlet of the flat plate heat exchanger is connected with an air outlet of the evaporation chamber, and an liquid outlet of the flat plate heat exchanger is connected with the collector.
5. The high-concentration ethanol wastewater treatment system as claimed in claim 3, wherein the condensation collection mechanism comprises a condenser and a collection tank, an air inlet of the condenser is connected with an air outlet of the evaporation chamber, and an liquid outlet of the condenser is connected with the collection tank.
6. The high-concentration ethanol wastewater treatment system as claimed in claim 3, wherein the evaporation chamber is connected with the water inlet of the heating chamber through a return pipe.
7. The high-concentration ethanol wastewater treatment system according to claim 1, wherein the pretreatment unit comprises a grating machine, a coagulation tank and a sedimentation tank, a water outlet of the ethanol recovery unit is connected with a water inlet of the grating machine, and a water outlet of the grating machine is connected with a water inlet of the coagulation tank.
8. The high-concentration ethanol wastewater treatment system of claim 1, wherein the biochemical unit comprises a hydrolysis acidification tank, an aerobic biological fluidized bed and an aerobic biological oxidation tank which are connected in sequence, and a water inlet of the hydrolysis acidification tank is connected with a supernatant water outlet of the pretreatment unit.
9. The high-concentration ethanol wastewater treatment system according to claim 1, wherein the advanced treatment unit is an activated carbon adsorption device, a Fenton tank or an ozone oxidation tank.
10. The high-concentration ethanol wastewater treatment system according to claim 1, further comprising a sludge treatment unit, wherein the pretreatment unit and the biochemical unit are connected with the sludge treatment unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021358865.2U CN212713164U (en) | 2020-07-10 | 2020-07-10 | High concentration ethanol effluent disposal system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021358865.2U CN212713164U (en) | 2020-07-10 | 2020-07-10 | High concentration ethanol effluent disposal system |
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| CN212713164U true CN212713164U (en) | 2021-03-16 |
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| CN202021358865.2U Active CN212713164U (en) | 2020-07-10 | 2020-07-10 | High concentration ethanol effluent disposal system |
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Effective date of registration: 20230920 Address after: 414002 Room 695, Building A, Phase I, Lingang High tech Industrial Park, Yongji Avenue, Yueyang District, China (Hunan) Pilot Free Trade Zone, Yueyang, Hunan Province Patentee after: Hunan Chengtong Tianyue Environmental Protection Technology Co.,Ltd. Address before: 414002 No.1 Guangming Road, Chenglingji, Yueyanglou District, Yueyang City, Hunan Province Patentee before: YUEYANG PAPER Co.,Ltd. Effective date of registration: 20230920 Address after: 414002 No.1 Guangming Road, Chenglingji, Yueyanglou District, Yueyang City, Hunan Province Patentee after: YUEYANG PAPER Co.,Ltd. Address before: 414300 Guangming Road, Xingang District, Chenglingji City, Hunan Province Patentee before: Xingang Tianyue environmental protection branch of Yueyang Forest Paper Co.,Ltd. |
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