CN215627446U - Kitchen biogas slurry purification device - Google Patents
Kitchen biogas slurry purification device Download PDFInfo
- Publication number
- CN215627446U CN215627446U CN202122079255.XU CN202122079255U CN215627446U CN 215627446 U CN215627446 U CN 215627446U CN 202122079255 U CN202122079255 U CN 202122079255U CN 215627446 U CN215627446 U CN 215627446U
- Authority
- CN
- China
- Prior art keywords
- water
- communicated
- inlet
- ultrafiltration membrane
- evaporator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The application discloses meal kitchen natural pond liquid purifier, including the biochemical reaction pond, ultrafiltration membrane subassembly, low temperature evaporimeter and product water tank, the supernatant export of biochemical reaction pond passes through the water intake pipe and communicates with the water inlet of ultrafiltration membrane subassembly, the product mouth of a river of ultrafiltration membrane subassembly communicates with the water inlet of product water pump, the dense water export of ultrafiltration membrane subassembly passes through the dense water return line and communicates with the natural pond liquid import of biochemical reaction pond, low temperature evaporimeter includes the evaporimeter, a heat exchanger, condenser and fan, the evaporimeter water inlet communicates with the delivery port of producing the water pump, the heat exchanger circulation is to producing the water heating in the evaporimeter, evaporimeter gas outlet and condenser air inlet intercommunication, the condenser delivery port communicates with product water tank water inlet, condenser gas outlet and fan air intake intercommunication, the fan air outlet communicates with the evaporimeter air inlet. This application combines together through biochemical treatment and ultrafiltration, effectively gets rid of ammonia nitrogen and organic matter to the reduction pollutes low temperature evaporator, and low temperature evaporator makes TDS, COD content in the condensate water low can directly discharge.
Description
Technical Field
The utility model belongs to the technical field of kitchen biogas slurry treatment, and particularly relates to a kitchen biogas slurry purification device.
Background
With the rapid development of the catering industry, more and more kitchen wastes are generated. In the kitchen waste treatment process, a large amount of biogas slurry is generated through anaerobic treatment. The biogas slurry contains organic matters such as pericarp and vegetables which are not decomposed by high-temperature fermentation, and protein in the kitchen waste is aminated into nitrogen-containing compounds, dehydrated residual suspended matters and the like. Therefore, the kitchen biogas slurry is high-difficulty-treated wastewater containing high organic matters and high ammonia nitrogen. The biodegradability of the kitchen biogas slurry is poor, and the waste water treatment of the kitchen biogas slurry is an industrial problem. At present, the common treatment process of the kitchen biogas slurry is 'pretreatment + biochemical treatment + advanced treatment'. Methods such as membrane treatment and advanced oxidation in advanced treatment are common, and the Fenton oxidation method is researched more. Due to the existence of high COD, ammonia nitrogen, SS (suspended solid) and grease in the kitchen biogas slurry, the quality of water produced by the system cannot reach the standard, and meanwhile, the sewage treatment system often has the condition of operation instability.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the defects in the prior art and provide the kitchen biogas slurry purification device which is simple in process flow, low in cost, small in dosage, good in water quality of produced water and capable of achieving standard discharge. The adopted technical scheme is as follows:
a kitchen biogas slurry purification device, which comprises a biochemical reaction tank, an ultrafiltration membrane component, a low-temperature evaporator and a water production tank,
wherein the biochemical reaction tank comprises a biogas slurry inlet and a supernatant outlet which are positioned at the upper part, the supernatant outlet is communicated with the water inlet of the ultrafiltration membrane component through a water inlet pipeline, the water outlet of the ultrafiltration membrane component is communicated with the water inlet of the water producing pump, the concentrated water outlet of the ultrafiltration membrane component is communicated with the biogas slurry inlet of the biochemical reaction tank through a concentrated water return pipeline,
the low-temperature evaporator comprises an evaporator, a heat exchanger, a condenser and a fan, wherein a water inlet of the evaporator is communicated with a water outlet of the water producing pump, the heat exchanger is connected with a heat source, a hot water outlet of the heat exchanger is communicated to a hot water inlet of the evaporator, a cold water outlet of the evaporator is communicated to a cold water inlet of the heat exchanger, a gas outlet of the evaporator is communicated with a gas inlet of the condenser, a water outlet of the condenser is communicated with a water inlet of the water producing tank, a gas outlet of the condenser is communicated with a gas inlet of the fan, and a gas outlet of the fan is communicated with a gas inlet of the evaporator.
Optionally, the ultrafiltration membrane module is one of a flat-plate ultrafiltration membrane module and a hollow fiber ultrafiltration membrane module.
Optionally, the ultrafiltration membrane module has a uniform distribution of membrane pore sizes, and the membrane pore size is 0.01-0.2 microns.
Optionally, the chemical adding device further comprises a chemical adding water tank, and a chemical outlet of the chemical adding water tank is communicated to the water inlet pipeline.
Optionally, the biochemical reaction tank is further provided with a sludge discharge port located at the bottom, and the sludge discharge port is communicated with the biogas slurry inlet of the biochemical reaction tank through a sludge return pipeline.
Optionally, the cleaning device further comprises a cleaning unit, wherein the cleaning unit comprises a cleaning water tank and a cleaning pump, a water inlet of the cleaning water tank is communicated to the concentrated water return pipeline, and a water outlet of the cleaning water tank is communicated to the water inlet pipeline through the cleaning pump.
Optionally, the biochemical reaction device further comprises a concentrated water tank, a cold water outlet of the evaporator is communicated with a water inlet of the concentrated water tank, and a water outlet of the concentrated water tank is communicated to the biochemical reaction tank.
The kitchen biogas slurry purification device disclosed by the utility model combines biochemical treatment and ultrafiltration pretreatment, has good and stable effluent quality and small dosage, ensures the inlet water quality of the evaporator, reduces the pollution to the evaporator and prolongs the service life of the evaporator.
The utility model adopts the low-temperature evaporator to purify the produced water, and because the low-temperature surface evaporation is adopted, the TDS and COD content in the condensed water is low, and the condensed water can be directly discharged. The low-temperature evaporator can operate at normal pressure and low temperature (60 ℃), has low operation energy consumption and solves the problems of easy scaling, easy damage and short service life of the traditional evaporator in high-temperature operation.
The utility model adopts a microalgae biochemical treatment and ultrafiltration membrane treatment system, has good ammonia nitrogen and organic matter removal effect and high calcium and magnesium removal efficiency.
Drawings
The above features and technical advantages of the present invention will become more apparent and readily appreciated from the following description of the embodiments thereof taken in conjunction with the accompanying drawings.
FIG. 1 is a schematic structural diagram of a kitchen biogas slurry purification device according to an embodiment of the utility model;
FIG. 2 is a schematic structural view showing a low-temperature evaporator according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a kitchen biogas slurry purification device comprising a cleaning unit according to an embodiment of the utility model.
Detailed Description
The embodiments of the present invention will be described below with reference to the accompanying drawings. Those of ordinary skill in the art will recognize that the described embodiments can be modified in various different ways, or combinations thereof, without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims. Furthermore, in the present description, the drawings are not to scale and like reference numerals refer to like parts.
As shown in fig. 1, the kitchen biogas slurry purification device comprises a biochemical reaction tank 1, an ultrafiltration membrane component 3, a low-temperature evaporator 6 and a water production tank 13, wherein the biochemical reaction tank 1 comprises a biogas slurry inlet positioned at the upper part, a supernatant outlet and a sludge discharge port positioned at the bottom. The biogas slurry inlet is communicated with a biogas slurry supply pipeline 11, the biochemical reaction tank 1 contains microalgae organisms, and the microalgae organisms can be one of chlorella, spirulina and other algae. And a sludge discharge port of the biochemical reaction tank 1 is used for treating a part of sludge through a sludge discharge pipeline and then discharging the treated sludge. Preferably, a sludge discharge port of the biochemical reaction tank 1 is communicated and converged with a biogas slurry inlet of the biochemical reaction tank 1 through a sludge return pipeline, and a part of sludge is returned to the biochemical reaction tank 1. The supernatant outlet is communicated with the water inlet of the ultrafiltration membrane component 3 through the water inlet pipeline 2, the water production port of the ultrafiltration membrane component 3 is communicated with the water inlet of the water production pump 5 through the water production pipeline 4, and the concentrated water outlet of the ultrafiltration membrane component 3 is communicated with the biogas slurry inlet of the biochemical reaction tank 1 through the concentrated water return pipeline 9 and flows back into the biochemical reaction tank 1.
As shown in fig. 2, the low temperature evaporator 6 includes an evaporator 64, a heat exchanger 61, a condenser 63 and a fan 62, a water inlet of the evaporator 64 is communicated with a water outlet of the water producing pump 5, the heat exchanger 61 is connected with a heat source, the heat exchanger 61 is communicated with the evaporator 64 through a circulation pipeline, specifically, a hot water outlet of the heat exchanger 61 is communicated with a hot water inlet of the evaporator 64 through a pipeline, a circulation pump 611 is arranged on the pipeline, and a cold water outlet of the evaporator 64 is communicated with a cold water inlet of the heat exchanger 61. The hot water in the heat exchanger 61 enters the evaporator 64 to heat the produced water in the evaporator 64 to form steam, and the cooled cold water returns to the heat exchanger 61.
The air outlet of the evaporator 64 is communicated with the air inlet of the condenser 63, the water outlet of the condenser 63 is communicated with the water inlet of the water production tank 13, the air outlet of the condenser 63 is communicated with the air inlet of the fan 62, and the air outlet of the fan 62 is communicated with the air inlet of the evaporator 64. The dry air blown by the fan 62 into the evaporator 64 from the side surface of the evaporator 64 takes away the saturated water vapor on the surface of the liquid film to form wet air, and the wet air enters the air inlet of the condenser 63 through the air outlet. The evaporator 64 purifies the produced water by generating saturated steam, wherein the steam is condensed by the condenser 63 and is conveyed to the produced water tank 13, and the concentrated solution is remained in the evaporator 64 to continue to be circularly evaporated to form concentrated solution, and the circulation is carried out. The final concentrated solution can be separated by crystallization to form inorganic salt crystals and mother liquor, the inorganic salt crystals are treated as solid waste, the separated mother liquor can be collected into a concentrated water tank, specifically, a cold water outlet of the evaporator is also communicated with a water inlet of the concentrated water tank 12, and a water outlet of the concentrated water tank 12 is communicated to the biochemical reaction tank 1.
The ultrafiltration membrane component 3 is in the form of one of a flat-plate ultrafiltration membrane component and a hollow fiber ultrafiltration membrane component. The ultrafiltration membrane separation layer is made of one or more of polyvinylidene fluoride, polysulfone, polyether sulfone, polyacrylonitrile, polyvinyl chloride and polyether sulfone ketone with hydrophilicity and oil resistance. Preferably, the ultrafiltration membrane material with hydrophilicity, oil resistance and uniform membrane pore size distribution is adopted, and the membrane pore size is 0.01-0.2 microns.
Further, the device also comprises a dosing water tank 15, a medicine outlet of the dosing water tank is communicated to a water inlet pipeline 2 between the biochemical reaction tank 1 and the ultrafiltration membrane component 3, and a medicament in the dosing water tank 15 is lime milk, so that calcium and magnesium in the mixed liquid form colloid before entering the ultrafiltration membrane unit 3, and the calcium and magnesium can be purified and removed by the ultrafiltration membrane component 3.
Further, as shown in fig. 3, the washing device further comprises a washing unit, wherein the washing unit comprises a washing water tank 7 and a washing pump 8. The water outlet of the cleaning water tank 7 is communicated to the water inlet pipeline 2 through a cleaning pump 8, and the water inlet of the cleaning water tank 7 is communicated to a concentrated water return pipeline 9, so that a cleaning loop is formed. When cleaning is needed, cleaning water is pumped into the ultrafiltration membrane module 3 by the cleaning water tank 7 through the cleaning pump 8, the cleaning water circulates in the ultrafiltration membrane module 3 in a cross flow mode to clean the ultrafiltration membrane module 3, water produced by the ultrafiltration membrane module 3 enters the water production tank 13 through the low-temperature evaporator 6, and concentrated water enters the cleaning water tank 7.
Further, the water inlet line 2 is provided with a manual valve V1 and an automatic valve DF1, the water production line 4 is provided with a manual valve V2 and an automatic valve DF2, and the concentrate return line 9 is provided with a manual valve V3 and an automatic valve DF 3. When the ultrafiltration membrane module is operated for the first time, in order to ensure the normal operation of the ultrafiltration membrane module and prevent the water hammer phenomenon from generating in the operation and causing irreversible damage to the ultrafiltration module, V1, V2, DF1 and DF2 can be operated simultaneously, so that the pipeline is slowly filled with water flow. Similarly, when the ultrafiltration membrane module needs to be automatically cleaned, the V3 and the DF3 can be operated simultaneously, so that the water flow slowly fills the pipeline.
The treatment process of the kitchen biogas slurry purification device is described below.
The biogas slurry is input into the biochemical reaction tank 1, and the biological reaction tank 1 is internally provided with activated sludge mixed liquid with certain concentration to carry out biochemical degradation on pollutants in the biogas slurry and purify the biogas slurry. In the process that the supernatant in the biochemical reaction tank 1 is conveyed to the ultrafiltration membrane component 3 through the water inlet pipeline 2, lime milk is added through the chemical adding water tank 15, so that calcium and magnesium in the supernatant form colloid, and the colloid can be removed through the ultrafiltration membrane component 3. The concentrated water flows back to the biochemical reaction tank 1 through a concentrated water return pipeline 9. The produced water of the ultrafiltration membrane component 3 is conveyed to the low-temperature evaporator 6 for purification, the heat exchanger 61 heats the produced water, the dry air blown in from the side surface of the evaporator 64 through the fan 62 enters the evaporator 64 to carry away the saturated water vapor on the surface of the liquid film to form wet air, the wet air enters the condenser 63 from the air outlet of the evaporator 64 to be cooled to form condensed water, and the condensed water enters the water production tank 13 through the water outlet of the condenser 63. The condensed water is formed by condensing the moisture evaporated from the surface, and can be directly discharged from the water production tank 13 to the external environment due to the low content of COD (chemical oxygen demand) and TDS (total dissolved solids) in the water.
The condensed gas is again pressurized by fan 62 into evaporator 64. The concentrated solution in the evaporator 64 circulates all the time, and finally the concentrated solution is separated by crystallization to form inorganic salt crystals and mother liquor, the inorganic salt crystals are treated as solid waste, and the separated mother liquor can return to the biochemical reaction tank 1 through a pipeline.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A kitchen biogas slurry purification device is characterized by comprising a biochemical reaction tank, an ultrafiltration membrane component, a low-temperature evaporator and a water production tank,
wherein the biochemical reaction tank comprises a biogas slurry inlet and a supernatant outlet which are positioned at the upper part, the supernatant outlet is communicated with the water inlet of the ultrafiltration membrane component through a water inlet pipeline, the water outlet of the ultrafiltration membrane component is communicated with the water inlet of the water producing pump, the concentrated water outlet of the ultrafiltration membrane component is communicated with the biogas slurry inlet of the biochemical reaction tank through a concentrated water return pipeline,
the low-temperature evaporator comprises an evaporator, a heat exchanger, a condenser and a fan, wherein a water inlet of the evaporator is communicated with a water outlet of the water producing pump, the heat exchanger is connected with a heat source, a hot water outlet of the heat exchanger is communicated to a hot water inlet of the evaporator, a cold water outlet of the evaporator is communicated to a cold water inlet of the heat exchanger, a gas outlet of the evaporator is communicated with a gas inlet of the condenser, a water outlet of the condenser is communicated with a water inlet of the water producing tank, a gas outlet of the condenser is communicated with a gas inlet of the fan, and a gas outlet of the fan is communicated with a gas inlet of the evaporator.
2. The kitchen biogas slurry purification device according to claim 1, wherein the ultrafiltration membrane module is one of a flat-plate ultrafiltration membrane module and a hollow fiber ultrafiltration membrane module.
3. The kitchen biogas slurry purification device according to claim 1, wherein the ultrafiltration membrane module has uniform membrane pore size distribution, and the membrane pore size is 0.01-0.2 microns.
4. The kitchen biogas slurry purification device according to claim 1, further comprising a dosing water tank, wherein a chemical outlet of the dosing water tank is communicated to the water inlet pipeline.
5. The kitchen biogas slurry purification device according to claim 1, wherein the biochemical reaction tank is further provided with a sludge discharge port at the bottom, and the sludge discharge port is communicated with a biogas slurry inlet of the biochemical reaction tank through a sludge return pipeline.
6. The kitchen biogas slurry purification device according to claim 1, further comprising a cleaning unit, wherein the cleaning unit comprises a cleaning water tank and a cleaning pump, a water inlet of the cleaning water tank is communicated to the concentrated water return pipeline, and a water outlet of the cleaning water tank is communicated to the water inlet pipeline through the cleaning pump.
7. The kitchen biogas slurry purification device according to claim 1, further comprising a concentrated water tank, wherein a cold water outlet of the evaporator is communicated with a water inlet of the concentrated water tank, and a water outlet of the concentrated water tank is communicated to the biochemical reaction tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122079255.XU CN215627446U (en) | 2021-08-31 | 2021-08-31 | Kitchen biogas slurry purification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122079255.XU CN215627446U (en) | 2021-08-31 | 2021-08-31 | Kitchen biogas slurry purification device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215627446U true CN215627446U (en) | 2022-01-25 |
Family
ID=79904627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122079255.XU Active CN215627446U (en) | 2021-08-31 | 2021-08-31 | Kitchen biogas slurry purification device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215627446U (en) |
-
2021
- 2021-08-31 CN CN202122079255.XU patent/CN215627446U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101209881A (en) | Method and system for processing leachate of garbage burning factory | |
| CN106186514B (en) | By the ecological toilet system of lavatory sewage as resource processing | |
| CN206156896U (en) | Power plant circulating cooling water's zero release water processing system | |
| Zhou et al. | The valorization of biogas slurry with a pilot dual stage reverse osmosis membrane process | |
| CN105859057A (en) | Method and system for extracting substances and energy from sewage | |
| CN102320704B (en) | Comprehensive waste solution treatment device | |
| CN1760136A (en) | A kind of industrial water system clean preparation method that comprises recirculated cooling water and boiler water supply | |
| CN102010097B (en) | Method for recycling carbon fiber wastewater | |
| CN103274546A (en) | Printing and dyeing wastewater pure-turbid separating and waste heat utilizing system | |
| CN104628065A (en) | Chemical pharmaceutical wastewater treatment system and method | |
| CN109626692A (en) | Contain high concentration sodium sulfate, small organic molecule method for waste water and equipment for handling | |
| CN113277665A (en) | Method and device for treating high-concentration high-salinity wastewater through electrolytic evaporation | |
| CN113233528A (en) | Ultrasonic catalysis membrane distillation medical wastewater treatment system | |
| CN215627446U (en) | Kitchen biogas slurry purification device | |
| CN207002529U (en) | Pyrazolone production wastewater treatment device | |
| CN108706839A (en) | A kind of chemical industrial park comprehensive wastewater treatment system with high salt | |
| CN215161935U (en) | MVR evaporation treatment zinc-nickel waste water system equipment | |
| CN115259518A (en) | System and method for treating percolate concentrated solution | |
| CN206033470U (en) | High salt sewage treatment system | |
| CN102249487B (en) | Comprehensive processing device for wastewater and waste liquid | |
| CN107188378A (en) | Pyrazolone production wastewater treatment device and its handling process | |
| CN201473426U (en) | Micro-pollution raw water processing device used for water supply of boiler | |
| CN113480098A (en) | Separated type MAP-anaerobic membrane distillation biological reaction mariculture wastewater treatment system | |
| CN208649076U (en) | A kind of chemical industrial park comprehensive wastewater treatment system with high salt | |
| Chen et al. | Study on engineering process and equipment operation of total treatment project of leachate and concentrated solution |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |