CN213112815U - Reclaimed water recycling system - Google Patents
Reclaimed water recycling system Download PDFInfo
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- CN213112815U CN213112815U CN202021060888.5U CN202021060888U CN213112815U CN 213112815 U CN213112815 U CN 213112815U CN 202021060888 U CN202021060888 U CN 202021060888U CN 213112815 U CN213112815 U CN 213112815U
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Abstract
The utility model provides a reclaimed water recycling system, wherein the outlet of an ozone catalytic tower is connected with the inlet of a first buffer tank, and the outlet of the first buffer tank is connected with the first inlet of a recycling water tank; an inlet of the first settling tank is connected with an outlet of the crude tower residual distilled water of the distillation system, and an outlet of the first settling tank is connected with an inlet of the filtering device; the outlet of the filtering device is connected with the inlet of the second buffer tank, and the outlet of the second buffer tank is connected with the second inlet of the reuse water tank; an inlet of the second settling tank is connected with an outlet of the rectifying tower residual distilled water of the distillation system, and an outlet of the second settling tank is connected with an inlet of the second buffer tank; the outlet of the reuse water tank is connected with the inlet of the culture medium tank; therefore, the reuse system is used for filtering the reclaimed water in the sewage treatment system, treating the wastewater in the distillation system, and matching with the process water and chemicals to prepare the treated fermentation wastewater into a culture medium, so that the treatment load of the sewage system is reduced, and the sewage discharge is reduced.
Description
Technical Field
The utility model belongs to the technical field of waste water resource utilization, especially, relate to a reuse of reclaimed water system.
Background
The fermentation wastewater is one of the reclaimed water, belongs to high-concentration organic wastewater, and has high treatment difficulty and high investment and operation cost of a sewage treatment system. According to the requirement of the current environmental protection policy, the wastewater of all industrial enterprises must be discharged up to the standard, even discharged in a zero way, so how to treat high-concentration organic wastewater becomes a problem which must be solved in the chemical industry and the fermentation industry.
Even if the sewage of an enterprise can reach the standard after treatment, the sewage treatment cost is also a big problem faced by the enterprise. Therefore, how to reduce the sewage discharge and reduce the sewage treatment cost of enterprises are the current problems.
SUMMERY OF THE UTILITY MODEL
Problem to prior art existence, the embodiment of the utility model provides a reclaimed water recycling system for among the solution prior art, the enterprise's fermentation wastewater treatment degree of difficulty is big, the higher technical problem of sewage treatment cost.
The utility model provides a reuse of reclaimed water system, the system includes: the system comprises an ozone catalytic tower, a first buffer tank, a reuse water tank, a first sedimentation tank, a filtering device, a second buffer tank, a second sedimentation tank and a culture medium tank; wherein the content of the first and second substances,
the outlet of the sewage treatment system is connected with the inlet of the ozone catalytic tower; an outlet of the ozone catalytic tower is connected with an inlet of the first buffer tank, and an outlet of the first buffer tank is connected with a first inlet of the reuse water tank;
an inlet of the first settling tank is connected with an outlet of the crude tower residual distilled water of the distillation system, and an outlet of the first settling tank is connected with an inlet of the filtering device; an outlet of the filtering device is connected with an inlet of the second buffer tank, and an outlet of the second buffer tank is connected with a second inlet of the reuse water tank;
an inlet of the second settling tank is connected with an outlet of the rectifying tower residual water of the distillation system, and an outlet of the second settling tank is connected with an inlet of the second buffer tank;
the outlet of the reuse water tank is connected with the inlet of the culture medium tank.
In the above scheme, an ozone water supply pump is further installed between the ozone catalytic tower and the outlet of the sewage treatment system.
In the above scheme, a first feeding pump is installed between the first settling tank and the filtering device.
In the scheme, a second feeding pump is arranged between an outlet of the rectifying tower residual distilled water of the distillation system and the second settling tank.
In the above scheme, a third feeding pump is installed between the first buffer tank and the recycling water tank.
In the scheme, the first proportion of the reclaimed water pumped into the reuse water tank from the first buffer tank is 0-50%, the second proportion of the residual distilled water pumped into the reuse water tank from the second buffer tank is 0-50%, and the sum of the first proportion and the second proportion is less than or equal to 80%.
In the above scheme, the first settling tank is a flocculation settling tank, and the second settling tank is an inclined plate settling tank.
In the above scheme, the filtering device is a plate-and-frame filter press.
In the scheme, SS in water in the first buffer tank is less than 150mg/L, and COD is less than 500 mg/L.
In the scheme, SS in water in the second buffer tank is less than 150 mg/L.
The utility model provides a reuse of reclaimed water system, include: the system comprises an ozone catalytic tower, a first buffer tank, a reuse water tank, a first sedimentation tank, a filtering device, a second buffer tank, a second sedimentation tank and a culture medium tank; wherein, the outlet of the sewage treatment system is connected with the inlet of the ozone catalytic tower; an outlet of the ozone catalytic tower is connected with an inlet of the first buffer tank, and an outlet of the first buffer tank is connected with a first inlet of the reuse water tank; an inlet of the first settling tank is connected with an outlet of the crude tower residual distilled water of the distillation system, and an outlet of the first settling tank is connected with an inlet of the filtering device; an outlet of the filtering device is connected with an inlet of the second buffer tank, and an outlet of the second buffer tank is connected with a second inlet of the reuse water tank; an inlet of the second settling tank is connected with an outlet of the rectifying tower residual water of the distillation system, and an outlet of the second settling tank is connected with an inlet of the second buffer tank; the outlet of the reuse water tank is connected with the inlet of the culture medium tank; therefore, the reuse system can be used for filtering the reclaimed water in the sewage treatment system, treating the wastewater in the distillation system, and then matching with the production water and chemicals required by the culture medium to prepare the treated fermentation wastewater into the culture medium, so that the treatment load of the sewage system can be reduced, and the sewage discharge amount can be reduced; and because the fermentation wastewater contains a plurality of chemical elements required by the preparation of the culture medium, the use amount of chemicals can be reduced, and the production cost is reduced.
Drawings
Fig. 1 is a schematic view of an overall structure of a reclaimed water recycling system according to an embodiment of the present invention.
Description of reference numerals:
1-an ozone catalytic tower; 2-a first buffer tank; 3-recycling water tank; 4-a first settling tank; 5-a filtration device; 6-a second buffer tank; 7-a second settling tank; 8-culture medium pot; 9-ozone water supply pump; 10-a third feed pump; 11-a first feed pump; 12-a second feed pump; 13-fourth feed pump.
Detailed Description
In order to solve the technical problems of large treatment difficulty of the fermentation wastewater of enterprises and high sewage treatment cost in the prior art, the utility model provides a reclaimed water recycling system.
The technical solution of the present invention is further described in detail with reference to the accompanying drawings and specific embodiments.
The embodiment provides a reclaimed water recycling system, which is suitable for wastewater generated in a process of preparing fuel ethanol by a biological fermentation method or wastewater generated in other fermentation industries, such as the industry of preparing methanol by fermentation and the like. Mainly comprises the residual distilled water of a distillation system and the reclaimed water generated in a sewage treatment system. As shown in fig. 1, the system includes: the system comprises an ozone catalytic tower 1, a first buffer tank 2, a reuse water tank 3, a first sedimentation tank 4, a filtering device 5, a second buffer tank 6, a second sedimentation tank 7 and a culture medium tank 8; wherein the content of the first and second substances,
the outlet of the sewage treatment system is connected with the inlet of the ozone catalytic tower 1; the outlet of the ozone catalytic tower 1 is connected with the inlet of the first buffer tank 2, and the outlet of the first buffer tank 2 is connected with the first inlet of the reuse water tank 3, so that the treated reclaimed water is injected into the reuse water tank 3.
Here, an ozone water supply pump 9 is further installed between the ozone catalytic tower 1 and the outlet of the sewage treatment system, and the ozone water supply pump 9 is used for pumping the reclaimed water in the sewage treatment system into the ozone catalytic tower 1. A third feeding pump 10 is installed between the first buffer tank 2 and the reuse water tank 3, and the third feeding pump 10 is used for pumping the reclaimed water in the first buffer tank 2 into the reuse water tank 3.
The reclaimed water in the sewage treatment system is the reclaimed water filtered by the MBR filtering device, and the purpose of treating the reclaimed water by using the MBR filtering device is to reduce suspended matters in the reclaimed water. Then the ozone is treated by an ozone catalytic tower 1 to reduce the COD content of the reclaimed water. In the embodiment, SS and COD in the water treated by the ozone catalytic tower 1 are respectively less than 150mg/L and less than 500mg/L, namely SS and COD in the water in the first buffer tank 2 are respectively less than 150mg/L and less than 500 mg/L.
An inlet of the first settling tank 4 is connected with an outlet of the crude tower residual distilled water of the distillation system, and an outlet of the first settling tank 4 is connected with an inlet of the filtering device 5; the outlet of the filtering device 5 is connected with the inlet of a second buffer tank 6, and the outlet of the second buffer tank 6 is connected with the second inlet of the reuse water tank 3; so that the treated residual distilled water of the crude tower can be injected into the recycling tank 3.
Here, the first settling tank 4 is specifically a flocculation settling tank for flocculating settling of the crude tower residue water. A first feeding pump 11 is arranged between the first settling tank 4 and the filtering device 5, and the first feeding pump 11 is used for pumping the crude tower residual distillate after the first settling tank 4 is settled into the filtering device 5. Wherein, the filtering device 5 can be a plate-and-frame filter press and is used for filtering the residual distilled water of the crude tower.
An inlet of the second settling tank 7 is connected with an outlet of the rectifying tower residual distilled water of the distillation system, and an outlet of the second settling tank 7 is connected with an inlet of the second buffer tank 6; wherein, the second settling tank 7 can be an inclined plate settling tank and is used for settling the rectifying tower residual distilled water.
Here, a second feed pump 12 is installed between the outlet of the rectifying tower residual water of the distillation system and the second settling tank 7, and the second feed pump 12 is used to pump the rectifying tower residual water into the second settling tank 7.
A fourth feeding pump 13 is further installed between the second buffer tank 6 and the reuse water tank 3, and the fourth feeding pump 13 is used for pumping the residual distillate in the second buffer tank 6 into the reuse water tank 3.
In order to ensure the success rate of the subsequent culture medium water, in the reuse water tank 3, the first proportion of the reclaimed water pumped into the backwater tank 3 from the first buffer tank is 0-50%, the second proportion of the residual distilled water pumped into the backwater tank 3 from the second buffer tank 6 is 0-50%, and the sum of the first proportion and the second proportion is less than or equal to 80%.
When the water for the culture medium is prepared, the water in the reuse water tank 3 is pumped into the culture medium tank 8, a certain amount of chemicals and production water are added into the culture medium tank 8 according to a certain proportion, and the culture medium is directly connected into a fermentation system for bacterial growth after the preparation of the culture medium is finished. Therefore, the discharge amount of the reclaimed water is reduced, the sewage treatment cost is reduced, and the reclaimed water contains various chemical components for preparing the culture medium, so that the preparation cost of the culture medium can be effectively reduced.
The embodiment of the utility model provides a beneficial effect that reuse of reclaimed water system can bring is at least:
the utility model provides a reuse of reclaimed water system, include: the system comprises an ozone catalytic tower, a first buffer tank, a reuse water tank, a first sedimentation tank, a filtering device, a second buffer tank, a second sedimentation tank and a culture medium tank; wherein, the outlet of the sewage treatment system is connected with the inlet of the ozone catalytic tower; an outlet of the ozone catalytic tower is connected with an inlet of the first buffer tank, and an outlet of the first buffer tank is connected with a first inlet of the reuse water tank; an inlet of the first settling tank is connected with an outlet of the crude tower residual distilled water of the distillation system, and an outlet of the first settling tank is connected with an inlet of the filtering device; an outlet of the filtering device is connected with an inlet of the second buffer tank, and an outlet of the second buffer tank is connected with a second inlet of the reuse water tank; an inlet of the second settling tank is connected with an outlet of the rectifying tower residual water of the distillation system, and an outlet of the second settling tank is connected with an inlet of the second buffer tank; the outlet of the reuse water tank is connected with the inlet of the culture medium tank; therefore, the reuse system can be used for filtering the reclaimed water in the sewage treatment system, treating the wastewater in the distillation system, and then matching with the production water and chemicals required by the culture medium to prepare the treated fermentation wastewater into the culture medium, so that the treatment load of the sewage system can be reduced, and the sewage discharge amount can be reduced; and because the fermentation wastewater contains a plurality of chemical elements required by the preparation of the culture medium, the use amount of chemicals can be reduced, and the production cost is reduced.
Example two
In practical application, when the reclaimed water recycling system provided by the first embodiment is used for recycling wastewater generated by preparing fuel ethanol by a biological fermentation method, the following steps are realized:
water discharged from a sewage system for preparing fuel ethanol by a biological fermentation method is pumped into an ozone catalytic tower 1 for treatment, water discharged from the ozone catalytic tower 1 is pumped into a first buffer tank 2, the first buffer tank 2 is replaced by nitrogen, and the first buffer tank 2 is always filled with small-flow nitrogen to achieve the purpose of deoxidization. The volume of the first buffer tank 2 is 20m3. Then, the water in the first buffer tank 2 is conveyed into the reuse water tank 3 by using a feed pump, when the reserve volume meets 50% of the water volume required by the culture medium, the water in the reuse water tank 3 is pumped into the culture medium tank 8, when the water volume reaches 50% of the volume of the culture medium tank, the pumping is stopped, then a certain amount of chemicals are proportionally added into the culture medium tank 8, the production water is added until the total volume of the culture medium tank 8 is reached, and the water adding is stopped, wherein the total volume of the culture medium tank 8 is 20m 3.
After the culture medium is prepared, the culture medium is directly connected into a fermentation system for bacterial growth, the fermentation process is well operated during recycling, and the ethanol yield and the coal gas conversion rate are equivalent to or even better than those of the culture medium prepared by using production water.
EXAMPLE III
In practical application, when the reclaimed water recycling system provided by the first embodiment is used for recycling wastewater generated by preparing fuel ethanol by a biological fermentation method, the following steps are realized:
the residual distilled water at the bottom of the rectifying tower of the distillation system for preparing the fuel ethanol by the biological fermentation method is precipitated by a second precipitation tank 7 and enters a second buffer tank 6, the second buffer tank 6 is replaced by nitrogen, and the second buffer tank 6 is always filled with small-flow nitrogen to achieve the purpose of deoxidizing. The volume of the second buffer tank 6 is 20m3。
When the second inner liquid level reaches 10m3When the water in the second buffer tank 6 is pumped to the reuse water tank 3, the volume of the reuse water tank 3 is about 20m3, and then the water in the reuse water tank 3 is injected into the culture medium tank 8, the volume of the culture medium tank is 20m3. Stopping water supply when the liquid level of the culture medium tank 8 reaches a half level, adding a certain amount of chemicals into the culture medium tank 8 in proportion, and then adding the production water to a total volume of 20m3After stop addingAnd (3) water. Wherein, if the residual distilled water at the bottom of the crude distillation tower is needed, the residual distilled water is firstly precipitated in the first precipitation tank 4 and then filtered by the filtering device 5, and the clear liquid enters the second buffer tank 6.
After the culture medium is prepared, the culture medium is directly connected into a fermentation system for bacterial growth, the fermentation process is well operated during recycling, and the ethanol yield and the coal gas conversion rate are equivalent to or even better than those of the culture medium prepared by using production water.
Example four
In practical application, when the reclaimed water recycling system provided by the first embodiment is used for recycling wastewater generated by preparing fuel ethanol by a biological fermentation method, the following steps are realized:
the residual distilled water at the bottom of the rectifying tower of the distillation system for preparing the fuel ethanol by the biological fermentation method is precipitated by a second precipitation tank 7 and enters a second buffer tank 6, the second buffer tank 6 is replaced by nitrogen, and the second buffer tank 6 is always filled with small-flow nitrogen to achieve the purpose of deoxidizing. The volume of the second buffer tank 6 is 20m3. If the residual distilled water at the bottom of the crude distillation tower is needed, the residual distilled water is precipitated in the first precipitation tank 4 and filtered by the filtering device 5, and then the clear liquid enters the second buffer tank 6.
When the liquid level in the second buffer tank 6 reaches 10m3When the water is left or right, the water in the second buffer tank 6 is conveyed to the reuse water tank 3 through a pump, and the volume of the reuse water tank 3 is about 20m3The pumping is stopped when half the level of the medium tank 8 is reached. Then injecting the water in the first buffer tank 2 into the reuse water tank 3 until the water reaches 80% of the total volume of the reuse water tank 3, injecting the water in the reuse water tank 3 into the culture medium tank 8, adding a certain amount of chemicals into the culture medium tank 8 in proportion, and supplementing the production water until the total volume is 20m3And then stopping adding water.
After the culture medium is prepared, the culture medium is directly connected into a fermentation system for bacterial growth, the fermentation process is well operated during recycling, and the ethanol yield and the coal gas conversion rate are equivalent to or even better than those of the culture medium prepared by using production water.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, and any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A reclaimed water reuse system, comprising: the system comprises an ozone catalytic tower, a first buffer tank, a reuse water tank, a first sedimentation tank, a filtering device, a second buffer tank, a second sedimentation tank and a culture medium tank; wherein the content of the first and second substances,
the outlet of the sewage treatment system is connected with the inlet of the ozone catalytic tower; an outlet of the ozone catalytic tower is connected with an inlet of the first buffer tank, and an outlet of the first buffer tank is connected with a first inlet of the reuse water tank;
an inlet of the first settling tank is connected with an outlet of the crude tower residual distilled water of the distillation system, and an outlet of the first settling tank is connected with an inlet of the filtering device; an outlet of the filtering device is connected with an inlet of the second buffer tank, and an outlet of the second buffer tank is connected with a second inlet of the reuse water tank;
an inlet of the second settling tank is connected with an outlet of the rectifying tower residual water of the distillation system, and an outlet of the second settling tank is connected with an inlet of the second buffer tank;
the outlet of the reuse water tank is connected with the inlet of the culture medium tank.
2. The system of claim 1, wherein an ozone feed pump is further installed between the ozone catalytic tower and the outlet of the sewage treatment system.
3. The system of claim 1, wherein a first feed pump is mounted between the first settling tank and the filtering device.
4. The system of claim 1, wherein a second feed pump is installed between an outlet of the rectification water of the distillation system and the second settling tank.
5. The system of claim 1, wherein a third feed pump is installed between the first surge tank and the reuse water tank.
6. The system of claim 1, wherein a first percentage of the reclaimed water pumped from the first buffer tank to the reuse water tank is 0 to 50%, a second percentage of the remaining water pumped from the second buffer tank to the reuse water tank is 0 to 50%, and a sum of the first percentage and the second percentage is less than or equal to 80%.
7. The system of claim 1, wherein the first settling tank is a flocculation settling tank and the second settling tank is an inclined plate settling tank.
8. The system of claim 1, wherein the filtration device is a plate and frame pressure filter.
9. The system of claim 1, wherein the water in the first buffer tank has SS <150mg/L and COD < 500 mg/L.
10. The system of claim 1, wherein SS in the water in the second buffer tank is <150 mg/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202021060888.5U CN213112815U (en) | 2020-06-10 | 2020-06-10 | Reclaimed water recycling system |
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| CN202021060888.5U CN213112815U (en) | 2020-06-10 | 2020-06-10 | Reclaimed water recycling system |
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| CN213112815U true CN213112815U (en) | 2021-05-04 |
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Address after: Room 1601-6, 16th floor, building 1, yard 1, tianshunzhuang North Road, Shijingshan District, Beijing 100043 Patentee after: Beijing Shougang langze Technology Co.,Ltd. Patentee after: HEBEI SHOULANG NEW ENERGY TECHNOLOGY CO.,LTD. Patentee after: Beijing Shoulang Biotechnology Co.,Ltd. Address before: 100043 room 1601-6, building 1, yard 1, tianshunzhuang North Road, Shijingshan District, Beijing Patentee before: BEIJING SHOUGANG LANGZE NEW ENERGY TECHNOLOGY CO.,LTD. Patentee before: HEBEI SHOULANG NEW ENERGY TECHNOLOGY CO.,LTD. Patentee before: Beijing Shoulang Biotechnology Co.,Ltd. |