CN209778587U - Integrated device for treating human black water by applying dynamic membrane anaerobic MBR-forward osmosis technology - Google Patents
Integrated device for treating human black water by applying dynamic membrane anaerobic MBR-forward osmosis technology Download PDFInfo
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- CN209778587U CN209778587U CN201920357847.3U CN201920357847U CN209778587U CN 209778587 U CN209778587 U CN 209778587U CN 201920357847 U CN201920357847 U CN 201920357847U CN 209778587 U CN209778587 U CN 209778587U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
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Abstract
An integrated device for treating human black water by applying a dynamic membrane anaerobic MBR-forward osmosis technology belongs to the technical field of water treatment. The device comprises a feeding pretreatment system, an adjusting tank, a dynamic membrane anaerobic MBR (membrane bioreactor), a forward osmosis reactor, a circulation system I, a circulation system II, a gas collection system, a discharge system and an instrument control system. The method comprises the following steps that materials to be treated enter a dynamic membrane anaerobic MBR reactor through a feeding pretreatment system for anaerobic fermentation, biogas enters a gas collection system for collection, biogas slurry enters the inner side of a membrane component of a forward osmosis reactor for concentration, concentrated biogas slurry repeatedly enters the forward osmosis reactor through a circulation system, and high-concentration biogas slurry can be finally produced to serve as liquid fertilizer; and (3) the fermentation mixed liquor in the dynamic membrane anaerobic MBR enters the outer side of a membrane component of the forward osmosis reactor through the second circulating system to be used as a draw liquor, and the biogas slurry is concentrated by utilizing the osmotic pressure difference at the two sides of the forward osmosis membrane. The whole set of device can realize resource regeneration and recovery while reducing treatment energy consumption and harmlessly treating pollutants.
Description
Technical Field
The utility model relates to a higher sewage resourceful treatment technical field of organic matter content especially indicates an integrated device who uses dynamic membrane anaerobism MBR (membrane bioreactor) -just osmosis technology to handle human black water.
Background
The human black water has relatively high organic matter content, is rich in nitrogen, phosphorus and other nutrient elements, has great resource potential, but if the human black water cannot be treated in time, the environmental sanitation is influenced, the soil and water source pollution is caused, and the human life health is harmed.
At present, human black water is usually directly discharged into a sewer pipe network, and after being mixed and diluted by rainwater and other domestic sewage, pollutants such as organic matters, nitrogen, phosphorus and the like are enriched and separated by a sewage treatment plant, so that a large amount of resources are consumed in the process. Therefore, human black water should be separately collected and resources should be recovered while realizing harmless treatment of the black water.
At present, biological treatment technology is commonly adopted in the harmless process of the human black water. The anaerobic technology can recover biogas and consumes less energy during operation, so that the anaerobic technology is more economic and environment-friendly, but the traditional anaerobic technology has the problems of long treatment time consumption and poor effluent quality. The anaerobic MBR (membrane bioreactor) has the advantages of independent hydraulic retention time and sludge retention time, long sludge age, high degradation efficiency, short operation period, low residual sludge yield, good and stable effluent quality and small occupied area. However, membrane fouling caused by deposition and accumulation of organic matter, sludge particles, inorganic matter, and the like on the membrane surface is the most important limiting factor of this technology. The dynamic membrane technology can intercept impurities through a dynamic biological membrane and slow down the membrane pollution rate. Therefore, the dynamic membrane anaerobic MBR technology not only can retain the advantages of anaerobic MBR, but also has the advantages of high flux, easy cleaning and low energy consumption.
The biogas slurry produced in the anaerobic fermentation process contains soluble nitrogen and phosphorus compounds, can be safely discharged after being fully treated, can be reused as a fertilizer, but has low concentration of nutrient elements, overlarge volume, high storage and transportation cost and needs to be concentrated. The traditional biogas slurry concentration technology needs temperature rise or pressurization, the energy consumption is high, the forward osmosis technology can use osmotic pressure difference as driving force, the energy consumption is low, the pollution is small, and the pollutant interception effect is good. Finally, the biogas slurry can be used for producing liquid organic fertilizer with high added value.
The whole set of system can realize the harmless and recycling of wastes, realize the increment of environment, energy and resources, and has important significance on the aspects of domestic sewage management and disposal, the recycling of human black water, ecological environment treatment, toilet technical development and the like.
Disclosure of Invention
The to-be-solved technical problem of the utility model is to provide an use integrated device of dynamic membrane anaerobism MBR (membrane bioreactor) -positive osmosis technology processing human black water, organic matter produces the biological energy in adopting anaerobic fermentation degradation sewage at first, will cross membrane natural pond liquid again and get into positive osmosis reactor and concentrate, obtains the product of high added value, realizes energy saving and consumption reduction, green, energy, high-valued target.
The device comprises a feeding pretreatment system, an adjusting tank, a dynamic membrane anaerobic MBR (membrane bioreactor), a forward osmosis reactor, a circulation system I, a circulation system II, a gas collection system, a discharge system and an instrument control system. A filter is arranged between the feeding pretreatment system and the adjusting tank, the adjusting tank is connected with the dynamic membrane anaerobic MBR, the upper part of the dynamic membrane anaerobic MBR is connected with the gas collecting system and then connected with the forward osmosis reactor, the forward osmosis reactor is externally connected with the circulating system and then connected with the discharging system, the dynamic membrane anaerobic MBR and the forward osmosis reactor are connected with the circulating system II, and the instrument control system controls the feeding pretreatment system, the dynamic membrane anaerobic MBR, the forward osmosis reactor and the discharging system.
Further, the material to be treated enters a dynamic membrane anaerobic MBR reactor through a feeding pretreatment system for anaerobic fermentation, biogas enters a gas collection system for collection, biogas slurry enters the inner side of a membrane component of a forward osmosis reactor for concentration, the concentrated biogas slurry repeatedly enters the forward osmosis reactor through a circulation system, and finally high-concentration biogas slurry can be produced as liquid fertilizer; and (3) the fermentation mixed liquor in the dynamic membrane anaerobic MBR enters the outer side of a membrane component of the forward osmosis reactor through the second circulating system to be used as a draw liquor, and the biogas slurry is concentrated by utilizing the osmotic pressure difference at the two sides of the forward osmosis membrane.
Furthermore, the pretreatment system consists of a heating and insulating layer, a stirrer, a guide plate and a crushing pump, human black water enters the system and is homogenized by the stirrer, and large granular substances in the sewage are cut into small granules by the crushing pump, so that the microbial degradation efficiency is improved, and the pipeline blockage is reduced. The heating and insulating layer is arranged outside the pretreatment system, the heating temperature setting value of the heating and insulating layer is the same as the temperature in the anaerobic MBR, and the influence of sewage on the activity of microorganisms when the sewage enters the anaerobic fermentation system can be reduced.
Furthermore, an ultrafiltration membrane component is arranged in the dynamic membrane anaerobic MBR, a biogas circulating aeration system is arranged at the lower part of the dynamic membrane anaerobic MBR, the thickness of the dynamic membrane is controlled by biogas scouring, and a heating and insulating layer is arranged outside the anaerobic MBR to control the anaerobic fermentation temperature in the reactor. The forward osmosis reactor adopts an embedded runner type membrane assembly to increase the contact area of the biogas slurry and the forward osmosis membrane and improve the flow rate, thereby improving the permeation rate.
The utility model discloses an above-mentioned technical scheme's beneficial effect as follows:
the utility model discloses a developments membrane anaerobism MBR technique can separate the water conservancy dwell time and the mud dwell time of anaerobic fermentation process to can control milipore filter surface developments biomembrane thickness and structure, shorten the operating cycle, reduce operation maintenance cost, system optimization and energy saving and consumption reduction. The human black water dynamic membrane anaerobic MBR-forward osmosis technology treatment system can produce products with high added values, and can obtain biological energy sources and liquid organic fertilizers with high added values while realizing reduction and harmlessness to human black water. The forward osmosis concentration technology is an environment-friendly concentration technology, and transmembrane pressure difference can be used as the driving force of the system, so that energy conservation and consumption reduction can be realized. The whole system can realize continuous operation and integrated continuous treatment.
Drawings
FIG. 1 is a flow chart of the operation of the integrated device for treating human black water by using dynamic membrane anaerobic MBR-forward osmosis technology;
FIG. 2 is a schematic structural view of an integrated device for treating human black water by using dynamic membrane anaerobic MBR-forward osmosis technology.
Wherein: 1-human black water; 2-a pretreatment system; 3-a filter; 4-adjusting the tank; 5-dynamic membrane anaerobic MBR reactor; 6-forward osmosis reactor; 7-cycle system is unified; 8-circulating system two; 9-a gas collection system; 10-discharge system.
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.
The utility model provides an integrated device for treating human black water by dynamic membrane anaerobic MBR-forward osmosis technology.
As shown in fig. 1 and fig. 2, the device comprises a feed pretreatment system 2, a regulating tank 4, a dynamic membrane anaerobic MBR reactor 5, a forward osmosis reactor 6, a circulation system 7, a circulation system II 8, a gas collection system 9, a discharge system 10 and an instrument control system. A filter 3 is arranged between the feeding pretreatment system 2 and the adjusting tank 4, the adjusting tank 4 is connected with a dynamic membrane anaerobic MBR reactor 5, the dynamic membrane anaerobic MBR reactor 5 is connected with a forward osmosis reactor 6, a circulation system 7 is arranged outside the forward osmosis reactor 6, the forward osmosis reactor 6 is connected with a discharging system 10, a circulation system II 8 is connected between the dynamic membrane anaerobic MBR reactor 5 and the forward osmosis reactor 6, and the instrument control system controls the feeding pretreatment system 2, the dynamic membrane anaerobic MBR reactor 5, the forward osmosis reactor 6 and the discharging system 10.
in practical application, collected human black water 1 enters an adjusting tank 4 through a feeding pretreatment system 2 to complete homogenization and crushing treatment of sewage, the pretreated sewage enters a dynamic membrane anaerobic MBR (membrane bioreactor) 5 from the adjusting tank 4 to be subjected to anaerobic fermentation, biogas enters a gas collecting system 9 to be collected, biogas slurry enters the inner side of a membrane component of a forward osmosis reactor 6 to be concentrated, the concentrated biogas slurry repeatedly enters the forward osmosis reactor through a circulation system 7, and a discharging system 10 can finally produce high-concentration biogas slurry as liquid fertilizer; and (3) the fermentation mixed liquor in the dynamic membrane anaerobic MBR (membrane bioreactor) 5 enters the outer side of a membrane component of the forward osmosis reactor 6 through a second circulating system 8 to be used as a draw liquor, and the biogas slurry is concentrated by utilizing the osmotic pressure difference at two sides of the forward osmosis membrane. The aim of processing human black water to obtain a high value-added product by a dynamic membrane anaerobic MBR-forward osmosis technology is fulfilled through the process.
Aiming at the requirements of the process conditions of the dynamic membrane anaerobic MBR anaerobic fermentation and forward osmosis concentration processes, a dynamic membrane anaerobic MBR reactor and a forward osmosis reactor are respectively designed. Inside ultrafiltration membrane subassembly of establishing of dynamic membrane anaerobism MBR reactor, marsh gas circulation aeration system is installed to the lower part, erodees through marsh gas and controls dynamic membrane and be in suitable thickness, if too thick can lead to the excessive membrane pressure too big, influence natural pond liquid and discharge, if the biomembrane is too thin then can't filter impurity to can't slow down membrane pollution. In the anaerobic fermentation process, methanogens have high temperature sensitivity, and the temperature of a mixture in the reactor needs to be controlled in a proper temperature range, so that a heating insulation layer is arranged outside the dynamic membrane anaerobic MBR reactor to control the anaerobic fermentation temperature in the reactor. The biogas slurry discharged by the dynamic membrane anaerobic MBR is subjected to biodegradation and ultrafiltration membrane filtration, the suspended solid content is low, the content of soluble nitrogen-phosphorus compounds is high, the reactor is suitable for being used as a fertilizer to be recycled, in order to reduce the volume of the original biogas slurry and improve the concentration of the fertilizer, the biogas slurry enters the forward osmosis reactor to be concentrated, and the main factors of the forward osmosis rate are the fluid flow rate and the contact area of fluid and a membrane, so that the forward osmosis reactor adopts an embedded runner type membrane component to increase the contact area of the biogas slurry and the forward osmosis membrane and improve the flow rate, thereby improving the osmosis rate. Fermentation mixed liquor in the dynamic membrane anaerobic MBR enters the outer side of a membrane component of the forward osmosis reactor through the second circulating system to serve as drawing liquid, and biogas slurry concentration is carried out by utilizing osmotic pressure difference at two sides of the forward osmosis membrane without adding drawing liquid, so that the generation of system waste is reduced.
The biogas generated by the reaction in the device can be used as alternative fuel after further treatment, and the generated biological organic fertilizer can be directly applied to soil to improve the soil fertility. The whole system is an integrated continuous treatment system based on dynamic membrane anaerobic MBR (membrane bioreactor) anaerobic fermentation and forward osmosis concentration technology, can continuously and stably operate, realizes the treatment and utilization of reduction, harmlessness, energy regeneration and high value of human black water, and hardly generates waste in the whole process.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (4)
1. An integrated device for treating human black water by applying dynamic membrane anaerobic MBR-forward osmosis technology is characterized in that: the device comprises a feeding pretreatment system (2), an adjusting tank (4), a dynamic membrane anaerobic MBR (membrane bioreactor) reactor (5), a forward osmosis reactor (6), a circulation system I (7), a circulation system II (8), a gas collection system (9), a discharge system (10) and an instrument control system; set up filter (3) between feeding pretreatment system (2) and surge tank (4), surge tank (4) are followed and are connect dynamic membrane anaerobism MBR reactor (5), connect forward osmosis reactor (6) behind dynamic membrane anaerobism MBR reactor (5), circulating system (7) are established to forward osmosis reactor (6) outside, connect discharge system (10) behind forward osmosis reactor (6), connect circulation system two (8) between dynamic membrane anaerobism MBR reactor (5) and forward osmosis reactor (6), instrument control system control feeding pretreatment system (2), dynamic membrane anaerobism MBR reactor (5), forward osmosis reactor (6), discharge system (10).
2. The integrated apparatus for treating human black water using dynamic membrane anaerobic MBR-forward osmosis technology of claim 1, wherein: the feeding pretreatment system (2) consists of a heating insulation layer, a stirrer, a guide plate and a crushing pump, human black water (1) enters the system and is homogenized by the stirrer, and large-particle substances in sewage are cut into small particles by the crushing pump; a heating and insulating layer is arranged outside the feeding pretreatment system (2).
3. The integrated apparatus for treating human black water using dynamic membrane anaerobic MBR-forward osmosis technology of claim 1, wherein: an ultrafiltration membrane component is arranged in the dynamic membrane anaerobic MBR (5), a biogas circulating aeration system is arranged at the lower part of the membrane component, and a heating and insulating layer is arranged outside the dynamic membrane anaerobic MBR (5).
4. The integrated apparatus for treating human black water using dynamic membrane anaerobic MBR-forward osmosis technology of claim 1, wherein: the forward osmosis reactor (6) adopts an embedded runner type membrane component.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109867414A (en) * | 2019-03-20 | 2019-06-11 | 北京科技大学 | Using the integrated apparatus in Dynamic Membrane anaerobism MBR- positive infiltration technology processing mankind Heisui River |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109867414A (en) * | 2019-03-20 | 2019-06-11 | 北京科技大学 | Using the integrated apparatus in Dynamic Membrane anaerobism MBR- positive infiltration technology processing mankind Heisui River |
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