CN105461181A - Sewage treatment system and application thereof - Google Patents
Sewage treatment system and application thereof Download PDFInfo
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- CN105461181A CN105461181A CN201610034941.6A CN201610034941A CN105461181A CN 105461181 A CN105461181 A CN 105461181A CN 201610034941 A CN201610034941 A CN 201610034941A CN 105461181 A CN105461181 A CN 105461181A
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- sewage
- water
- tripping device
- adsorption
- microfiltration membrane
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
Abstract
The invention discloses a sewage treatment system and application thereof. The sewage treatment system comprises an adsorption device, a separation device and a water storage container. An adsorption treatment space is limited inside the adsorption device, and the separation device is composed of a micro-filtration membrane. The adsorption device for activated sludge forming and the separation device composed of the micro-filtration membrane are combined to purify sewage, an organic carbon source in the sewage can be rapidly adsorbed, the resource recovery rate is high, and energy consumption is low.
Description
Technical field
The present invention relates to water treatment field, particularly, relate to Sewage treatment systems and utilize this Sewage treatment systems to carry out the dirty water decontamination handles and reclaim the method for the carbon source in sewage.
Background technology
Along with socioeconomic fast development, environmental problem especially water pollution problems is day by day serious, has become the outstanding restraining factors in Chinese society and Economic development.Sewage discharge is the most immediate cause causing water pollutions, and municipal effluent is along with the urbanization process of China each department, total emission volumn or rate of growth is all worth show great attention to.Along with the continuous propelling that China's civilian infrastructure is built, a lot of metropolitan wastewater treatment rate of China has reached higher level, but still has the wastewater treatment rate of many small and medium-sized cities to need to improve.Improve treatment rate of domestic sewage, strengthen the emphasis that the control of urban water pollution is still the following water prevention and cure of pollution of China.
The main flow treatment process of current municipal effluent is aerobic activated sludge process and the various improvement biological treatment for different influent quality and processing target thereof, and activated sludge process is at the organic pollutant eliminated in municipal effluent and remove in nitrogen and phosphorus thing and played active effect.But by the restriction of technological principle itself, there is the deficiency of highly energy-consuming, high row's carbon, low-resource recovery in the conventional process pattern of municipal effluent, forms contradiction with the demand of current energy-saving and emission-reduction.Activated sludge process is supported to microbial decomposition pollutent by aeration due to needs, and its aeration energy consumption is up to the 40-50% of municipal wastewater treatment plant total energy consumption, if the annual emissions of China's municipal effluent is by 36,000,000,000 m
3, aeration energy consumption cost is by about 0.15 yuan/m
3calculate, then the aeration power consumption of disposing of sewage every year is more than 5,000,000,000 yuan.And these energy consumptions divide what take off to be the resource and the energy that contain in sewage: only consider organism, COD of sewage concentration is about 500mg/L, i.e. annual 18000000000 kg carbon resources and a large amount of chemical energy (being about catabiotic 9.3 times of current sewage treatment process) of running off, actual is the technology of a kind of " with can energy dissipating ".The organism simultaneously decomposed also can be converted into global warming gas---and carbonic acid gas, current activated sludge process often processes 1m
3sewage produces about 0.23kgCO
2, consume about 0.3 degree of electricity simultaneously, indirectly produce 0.32kgCO
2, both sums are 0.55kgCO
2.Therefore, change the pattern of traditional wastewater process, strengthening energy-saving and emission-reduction, raising resource reclaim are the important development trend in sewage treatment process future, are also the study hotspots of sewage treatment area simultaneously.
The resource utilization strengthening Water circulation and carbon species is the important development direction in municipal sewage treatment future, principal pollutant in municipal effluent and concentration are COD:300-500mg/L, TN:30-50mg/L, TP:4-6mg/L, therefrom can find out, the maximum resource contained in sewage is water and carbon species, and to carry out concentration and separation to carbonaceous material in sewage be the prerequisite realizing resource utilization.Due to during in municipal effluent, organic content is in usually, lower concentration, directly the organic carbon in sewage is carried out resource utilization and there is difficulty.Therefore, researching and developing efficient carbon source component concentration and separation technology is ensure the basis to the Efficient Conversion of high added value material and energy substance of carbon resource material in sewage.
Summary of the invention
The present invention is intended at least to solve one of technical problem existed in prior art.For this reason, one object of the present invention is to propose a kind of Sewage treatment systems, the sorbent material that active sludge is formed combines with microfiltration membrane by this system, the structure of this Sewage treatment systems is simple, easy to operate, the cost of sewage disposal is low, and the carbon source in energy efficiently concentrating sewage, resource recovery is high, energy consumption is little.
It should be noted that, the present invention completes based on the following work of contriver:
At present, carry out also few, still in the experimental study stage to the correlative study work that carbon source is separated.Membrane technique, compared with traditional water treatment mode, has the following advantages: even do not need the demand of pharmaceutical chemicals is very little from, concentrated, purification techniques as novel high score, effluent quality is better, sludge yield is low, and floor space is little, can retain multiple pollutant etc. simultaneously.Through lot of experiments, the sorbent material that active sludge is formed combines with microfiltration membrane by contriver, carries out carbon source recycling to sewage.By the characterization of adsorption of active sludge self, the carbon source component in enrichment sewage, the steady sources of active sludge, easily regenerates and has price advantage.Then, by the efficient crown_interception of microfiltration membrane, be separated microbial metabolites in the sewage after activated sludge absorption process and microorganism cells and other macromolecule contaminants, the adsorption process of mud can well be regulated and controled, further, film retains that to filter the effluent quality that obtains excellent.
Thus, according to an aspect of the present invention, the invention provides a kind of Sewage treatment systems.According to embodiments of the invention, this system comprises: adsorption unit, adsorption treatment space is limited in described adsorption unit, described adsorption treatment space is provided with conversion zone and sludgd deposition section from top to bottom, described conversion zone is provided with bottom wastewater inlet, the dense water inlet in bottom and top first and exports, and described conversion zone is made up of active sludge; Tripping device, described tripping device has dense water out, the first import, the second import and first go out water out, described dense water out is connected with the dense water inlet in described bottom of described adsorption unit, described first import exports with the described top first of described adsorption unit and is connected, and described tripping device is made up of microfiltration membrane; And tank, described tank has first and goes out water inlet and second and go out water out, and described first goes out water inlet goes out water out with described first of described tripping device and be connected, and described second goes out water out is connected with described second import of described tripping device.
According to the Sewage treatment systems of the embodiment of the present invention, the adsorption unit formed by active sludge is combined with the tripping device be made up of microfiltration membrane, carbon source recycling is carried out to sewage.By the characterization of adsorption of active sludge self, the carbon source component in enrichment sewage, the steady sources of active sludge, easily regenerates and has price advantage.Then, by the efficient crown_interception of microfiltration membrane, be separated microbial metabolites in the sewage after activated sludge absorption process and microorganism cells and other macromolecule contaminants, the adsorption process of mud can well be regulated and controled, further, film retains that to filter the effluent quality that obtains excellent.The structure of this Sewage treatment systems is simple, and volume is little, and can be separated organic carbon source in sewage by quick adsorption, resource recovery is high, and energy consumption is little.
In addition, Sewage treatment systems according to the above embodiment of the present invention, can also have following additional technical characteristic:
According to embodiments of the invention, the volume ratio of described conversion zone and described sludgd deposition section is (4-6): 1, preferably, is 5:1.
According to embodiments of the invention, the volume of described conversion zone is 20L, and the volume of described sludgd deposition section is 4.16L.
According to embodiments of the invention, described microfiltration membrane is hollow-fibre membrane.
According to embodiments of the invention, described microfiltration membrane is polyvinylidene fluoride film.
According to embodiments of the invention, the fenestra aperture of described microfiltration membrane is 0.1 micron, and the membrane flux of described microfiltration membrane is 12L/m
2h-24L/m
2h.
According to embodiments of the invention, this system comprises further: backwash water pump, and described backwash water pump is connected with described tripping device, for carrying out back flushing to described tripping device.
According to embodiments of the invention, this system comprises further: air compressor, and described air compressor is connected with described tripping device, for carrying out air-water associating back flushing to described tripping device.
According to a further aspect in the invention, the invention provides and a kind ofly utilize aforesaid Sewage treatment systems to carry out purifying treatment and reclaim the method for carbon source in described sewage.According to embodiments of the invention, the method comprises: utilize adsorption unit to carry out adsorption treatment to sewage, to obtain the sewage after adsorption treatment; Tripping device is utilized to carry out filtering separation process to the sewage after described adsorption treatment, to obtain water outlet; And utilize tank to collect described water outlet.
According to the sewage water treatment method of the embodiment of the present invention, the adsorption unit formed by active sludge is combined with the tripping device be made up of microfiltration membrane, carbon source recycling is carried out to sewage.By the characterization of adsorption of active sludge self, the carbon source component in enrichment sewage, the steady sources of active sludge, easily regenerates and has price advantage.Then, by the efficient crown_interception of microfiltration membrane, be separated microbial metabolites in the sewage after activated sludge absorption process and microorganism cells and other macromolecule contaminants, the adsorption process of mud can well be regulated and controled, further, film retains that to filter the effluent quality that obtains excellent.Utilize this sewage water treatment method to process sewage, process is simple, and can be separated organic carbon source in sewage by quick adsorption, and resource recovery is high, and energy consumption is little.
According to embodiments of the invention, the temporal summation that described sewage carries out described adsorption treatment and described separating treatment is 22-44 minute.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 shows the structural representation of Sewage treatment systems according to an embodiment of the invention;
Fig. 2 shows the schematic flow sheet of sewage water treatment method according to an embodiment of the invention;
Fig. 3 shows the clearance result schematic diagram utilizing Sewage treatment systems to carry out sewage disposal according to an embodiment of the invention;
Fig. 4 shows the clearance result schematic diagram utilizing Sewage treatment systems to carry out sewage disposal according to an embodiment of the invention.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
In describing the invention, term " longitudinal direction ", " transverse direction ", " on ", D score, "front", "rear", "left", "right", " vertically ", " level ", " top ", the orientation of the instruction such as " end " or position relationship be based on orientation shown in the drawings or position relationship, be only the present invention for convenience of description instead of require that the present invention with specific azimuth configuration and operation, therefore must can not be interpreted as limitation of the present invention.
It should be noted that, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.Further, in describing the invention, except as otherwise noted, the implication of " multiple " is two or more.
According to an aspect of the present invention, the invention provides a kind of Sewage treatment systems.According to embodiments of the invention, this Sewage treatment systems is explained, this Sewage treatment systems comprises: adsorption unit 100, tripping device 200 and tank 300, wherein, limit adsorption treatment space in adsorption unit 100, this adsorption treatment space is provided with conversion zone 110 and sludge condensation section 120 from top to bottom, wherein, conversion zone 110 is provided with bottom wastewater inlet, the dense water inlet in bottom and top first and exports, and this conversion zone 110 is made up of active sludge; Tripping device 200 has dense water out, the first import, the second import and first go out water out, dense water out is connected with the dense water inlet in the bottom of adsorption unit 100, first import exports with the top first of adsorption unit 100 and is connected, and tripping device 200 is made up of microfiltration membrane; Tank 300 has first and goes out water inlet and second and go out water out, and described first goes out water inlet goes out water out with described first of described tripping device and be connected, and described second goes out water out is connected with described second import of described tripping device.
According to the Sewage treatment systems of the embodiment of the present invention, the adsorption unit formed by active sludge is combined with the tripping device be made up of microfiltration membrane, carbon source recycling is carried out to sewage.By the characterization of adsorption of active sludge self, the carbon source component in enrichment sewage, the carbon source that enrichment obtains also as a part for active sludge, can carry out adsorption treatment to sewage, and then, the steady sources of active sludge, easily to regenerate, cheap.Then, by the efficient crown_interception of microfiltration membrane, be separated microbial metabolites in sewage after activated sludge absorption process and microorganism cells and other macromolecule contaminants, the adsorption process of mud can well be regulated and controled, and film retain that to filter the effluent quality that obtains excellent, water outlet is stored in storage vessel, after the impurity in microfiltration membrane acquires a certain degree, utilize water outlet to carry out back flushing to microfiltration membrane, realize the recycle of water outlet.The structure of this Sewage treatment systems is simple, and volume is little, and can be separated organic carbon source in sewage by quick adsorption, resource recovery is high, and energy consumption is little.
According to some embodiments of the present invention, conversion zone 110 is (4-6) with the volume ratio of sludge condensation section 120: 1.Thus, the ratio of sludge condensation section is large, is convenient to the active sludge depositing a large amount of absorption, backflow.According to a preferred embodiment of the invention, conversion zone 110 is 5:1 with the volume ratio of sludge condensation section 120.Thus, the ratio of adsorption stage and enriching section is suitable for, and the active sludge through absorption backflow is deposited in enriching section just.
According to embodiments of the invention, conversion zone 110 is arranged according to the demand of sewage load with the volume of sludge condensation section 120.According to a particular embodiment of the invention, the volume of conversion zone 110 is 20L, and the volume of sludge condensation section 120 is 4.16L.
According to embodiments of the invention, described microfiltration membrane is hollow-fibre membrane.Thus, membrane module packing density is high, and technique is simple, and without the need to any supporter, production cost is lower.
According to embodiments of the invention, described microfiltration membrane is polyvinylidene fluoride film.Thus, membrane module has the advantage of anti-pollution, chemical resistance oxidation, effectively can be separated the suspended particle in water body and colloid pollution thing.
According to embodiments of the invention, the fenestra aperture of described microfiltration membrane is 0.1 micron, and the membrane flux of described microfiltration membrane is 12L/m
2h-24L/m
2h.Thus, membrane module unit volume packing density is large, and assembly water production rate is large, and the high and dynamic filtration of filtering accuracy, antiblocking ability is strong.
Wherein, microfiltration membrane is undertaken filtering by microfiltration membrane by the pressure-driven sewage inside and outside film.According to embodiments of the invention, microfiltration membrane adopts cross flow filter, and the shearing force that cross flow filter brings can reduce fouling membrane, and the water-out manners of microfiltration membrane is external-compression type.According to embodiments of the invention, be provided with pressure transmitter 500 by the first import feed-water end at tripping device 200, the first water side going out water out is provided with pressure transmitter 500 and under meter 600.Thus by pressure transmitter 500 and under meter 600 by side pressure difference inside and outside recording instrument without paper record microfiltration membrane and transmembrane pressure and film aquifer yield.Along with sewage water filtration, the fouling membrane of microfiltration membrane is serious gradually, detects transmembrane pressure change, controls the back flushing of microfiltration membrane, remove the pollution in microfiltration membrane by pressure transmitter 500.According to embodiments of the invention, utilize backwash water pump 400 to carry out back flushing to described tripping device 200, this backwash water pump 400 is connected with the second entrance end of tripping device 200.
According to some embodiments of the present invention, back flushing adopts online air-water associating back flushing, wherein, the water outlet that backwash adopts sewage purification to obtain, the gas of back flushing is then provided by air compressor 700, this air compressor 700 is connected with tripping device 200, for back flushing provides air, jointly air-water is carried out to tripping device 200 with water outlet and combine back flushing, thus, the efficiency of back flushing is high, effective.
According to embodiments of the invention, control to carry out regular back flushing to microfiltration membrane by the time relay.The backwash cycle is 15min, the water outlet that backwash adopts micro-filtrate membrane filtration to obtain, and backwash process is controlled automatically by magnetic valve.Adopt the mode of air-water associating back flushing, first separately with gas back flushing 10s, then with air-water associating back flushing 10s, finally use clear water back flushing 10s.Gas flushing intensity 10L/ (m
2s), water backwash rate 5L/ (m
2s).The flow process of concrete back flushing is as follows: when microfiltration membrane backwash starts, close recycle pump 800, open air compressor 700, air enters microfiltration membrane by air compressor 700, independent gas back flushing 10s, open backwash water pump 400 and recycle pump 800, water outlet enters tripping device 200 from tank 300, the common back flushing 10s of air-water, back flushing water outlet enters adsorption unit 100 by recycle pump 800 and mixes with water inlet, then, close air compressor 700, be used alone clear water back flushing 10s, then close backwash water pump 400, terminate back flushing.Former water enters tripping device 200 by recycle pump 800, starts normal membrane sepn.
According to a further aspect in the invention, the invention provides and a kind ofly utilize aforesaid Sewage treatment systems to carry out purifying treatment and reclaim the method for carbon source in described sewage.With reference to figure 2, according to embodiments of the invention, explain the method, the method comprises:
S100 adsorption treatment
According to embodiments of the invention, adsorption unit is utilized to carry out adsorption treatment to sewage, to obtain the sewage after adsorption treatment.Thus, utilize the carbon source in the activated sludge absorption sewage in adsorption unit, carbon source cost recovery is low, avoids traditional microorganism and is separated aeration consumption mass energy in a large amount of carbon sources waste and carbon source decomposition course that carbon source causes.
S200 separating treatment
According to embodiments of the invention, utilize tripping device to carry out filtration treatment to the sewage after adsorption treatment, obtain water outlet.By the efficient crown_interception of microfiltration membrane, be separated microbial metabolites in sewage after activated sludge absorption process and microorganism cells and other macromolecule contaminants, the adsorption process of mud can well be regulated and controled, and film retain that to filter the effluent quality that obtains excellent.
According to embodiments of the invention, the temporal summation that sewage carries out adsorption treatment and filtration treatment is 22-44 minute.The residence time is within 22-44 minute, to ensure the impurity in the abundant absorption effluent of active sludge, and the sewage after activated sludge absorption completes separation by microfiltration membrane.If the time is too short, active sludge may be there is insufficient to the impurity absorption in sewage, or sewage not being separated completely in microfiltration membrane, thus causing sewage purification not thorough, effluent characteristics is not high.And the treatment time is long, be separated the effluent characteristics obtained and improve not remarkable, but the time cost of sewage disposal significantly increases, cause the sewage load of device little, the processing cost of sewage is high.
S300 collects water outlet
According to embodiments of the invention, tank is utilized to collect described water outlet.Water outlet may be used for back flushing, also may be used for other purposes, thus water outlet can recycle, energy-saving and emission-reduction.
According to the sewage water treatment method of the embodiment of the present invention, the adsorption unit with active sludge formation is combined with the tripping device be made up of microfiltration membrane, carbon source recycling is carried out to sewage.By the characterization of adsorption of active sludge self, the carbon source component in enrichment sewage, the carbon source that enrichment obtains also as a part for active sludge, can carry out adsorption treatment to sewage, and then, the steady sources of active sludge, easily to regenerate, cheap.Then, by the efficient crown_interception of microfiltration membrane, be separated microbial metabolites in sewage after activated sludge absorption process and microorganism cells and other macromolecule contaminants, the adsorption process of mud can well be regulated and controled, and film retain that to filter the effluent quality that obtains excellent, water outlet is stored in storage vessel, after the impurity in microfiltration membrane acquires a certain degree, utilize water outlet to carry out back flushing to microfiltration membrane, realize the recycle of water outlet.The flow process of this sewage water treatment method is simple, and to operate, can be separated organic carbon source in sewage by quick adsorption, resource recovery is high, and energy consumption is little.
Below with reference to specific embodiment, the present invention will be described, it should be noted that, these embodiments are only illustrative, and can not be interpreted as limitation of the present invention.
Embodiment 1
Sewage treatment systems is utilized to carry out the dirty water decontamination handles to sanitary sewage and reclaim the carbon source in sewage, wherein, the structural representation of Sewage treatment systems as shown in Figure 1, wherein, microfiltration membrane aperture is 0.1 micron, material is the hollow fiber film assembly of polyvinylidene difluoride (PVDF), utilizes the process of this system to sewage disposal as follows:
(1) sewage enters adsorption stage by intake pump, and below reaction zone, water dense with membrane module mixes, and run total time 6d, flow is 0.65m
3/ d, sludge retention time is 2d, and hydraulic detention time is 44min, and organic loading is 7.9kgCOD/m
3d, obtains the mixed solution after adsorption treatment.
(2) mixed solution after adsorption treatment enters micro-filtration membrane module by recycle pump and carries out cross flow filter, and membrane flux is 12L/m
2h, filter 15min, automatically control water-gas backwashing by magnetic valve, micro-filtration membrane module water outlet is external-compression type, and water outlet directly enters tank.
After testing, total COD (TCOD) mean concns of intaking is 205.3 ± 16.9mg/L, and colloid COD (CCOD) mean concns is 87.8 ± 31.1mg/L, solubilised state COD (SCOD) mean concns is 85.1 ± 11.0mg/L; Biological adsorption microfiltration membrane reactor is 49.9 ± 5.6% to the average removal rate of TCOD, is 74.0 ± 17.3% to the average removal rate of CCOD, is 28.6 ± 10.2% to the average removal rate of SCOD; Biological adsorption microfiltration membrane reactor can reach 45.5% to the rate of recovery of COD.Biological adsorption microfiltration membrane reactor to the clearance of TCOD, CCOD, SCOD as shown in Figure 3, totally be it seems, the clearance of this Sewage treatment systems to SCOD is high, and better to the clearance of CCOD and TCOD.
Embodiment 2
Sewage treatment systems is utilized to carry out purifying treatment to sanitary sewage and reclaim the carbon source in sewage, wherein, the structural representation of Sewage treatment systems as shown in Figure 1, wherein, microfiltration membrane aperture is 0.1 micron, material is the hollow fiber film assembly of polyvinylidene difluoride (PVDF), utilizes the process of this system to sewage disposal as follows:
(1) sewage enters adsorption stage by intake pump, and below reaction zone, water dense with membrane module mixes, and run total time 8d, flow is 1.3m
3/ d, sludge retention time is 2d, and hydraulic detention time is 22min, and organic loading is 20.6kgCOD/m
3d, obtains the mixed solution after adsorption treatment.
(2) mixed solution after adsorption treatment enters micro-filtration membrane module by recycle pump and carries out cross flow filter, and membrane flux is 24L/m
2h, filter 15min, automatically control water-gas backwashing by magnetic valve, micro-filtration membrane module water outlet is external-compression type, and water outlet directly enters tank.
After testing, the TCOD mean concns of intaking is 294.8 ± 64.0mg/L, CCOD mean concns be 49.4 ± 11.3mg/L, SCOD mean concns is 120.4 ± 17.8mg/L; Biological adsorption microfiltration membrane reactor is 56.5 ± 8.6% to the average removal rate of TCOD, is 61.2 ± 7.4% to the average removal rate of CCOD, is 37.7 ± 8.6% to the average removal rate of SCOD; Biological adsorption microfiltration membrane reactor can reach 58.0% to the rate of recovery of COD.Biological adsorption microfiltration membrane reactor is to the clearance of TCOD, CCOD, SCOD as shown in Figure 4, similar to a upper example, and Sewage treatment systems is to high to the clearance of SCOD, and better to the clearance of CCOD and TCOD.
Contrast twice example, when hydraulic detention time is 22min, system is to the clearance of TCOD, and system is all higher to the rate of recovery of COD, consider the economy of system cloud gray model simultaneously, in actual motion, the preferred sludge retention time of this Sewage treatment systems is 2d, and hydraulic detention time is the operational conditions of 22min.Traditional wastewater treatment system, to the process of COD in sewage, mainly utilizes the metabolism of microorganism to decompose COD, COD is converted into CO
2discharge, this Sewage treatment systems then mainly utilizes activated sludge absorption COD, the high carbon containing mud obtained can recycling to reach the effect of resource reclaim; Water outlet after sludge absorption is through the efficient crown_interception of microfiltration membrane, and in isolating active mud, microbial metabolites and microorganism cells and other macromolecule contaminants, obtain high-quality water outlet.In sum, compared with traditional wastewater treatment system, the Sewage treatment systems structure of the embodiment of the present invention is simple, and easy to operate, cost of sewage disposal is low, and the carbon source in energy efficiently concentrating sewage, resource recovery is high.
In the description of this specification sheets, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and describe embodiments of the invention, those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present invention and aim, scope of the present invention is by claim and equivalents thereof.
Claims (10)
1. a Sewage treatment systems, is characterized in that, comprising:
Adsorption unit, adsorption treatment space is limited in described adsorption unit, described adsorption treatment space is provided with conversion zone and sludge condensation section from top to bottom, and described conversion zone is provided with bottom wastewater inlet, the dense water inlet in bottom and top first and exports, and described conversion zone is made up of active sludge;
Tripping device, described tripping device has dense water out, the first import, the second import and first go out water out, described dense water out is connected with the dense water inlet in described bottom of described adsorption unit, described first import exports with the described top first of described adsorption unit and is connected, and described tripping device is made up of microfiltration membrane; And
Tank, described tank has first and goes out water inlet and second and go out water out, and described first goes out water inlet goes out water out with described first of described tripping device and be connected, and described second goes out water out is connected with described second import of described tripping device.
2. system according to claim 1, is characterized in that, the volume ratio of described conversion zone and described sludge condensation section is (4-6): 1, preferably, is 5:1.
3. system according to claim 1, is characterized in that, the volume of described conversion zone is 20L, and the volume of described sludge condensation section is 4.16L.
4. system according to claim 1, is characterized in that, described microfiltration membrane is hollow-fibre membrane.
5. system according to claim 4, is characterized in that, described microfiltration membrane is polyvinylidene fluoride film.
6. system according to claim 4, is characterized in that, the fenestra aperture of described microfiltration membrane is 0.1 micron, and the membrane flux of described microfiltration membrane is 12L/m
2h-24L/m
2h.
7. system according to claim 2, is characterized in that, comprises further:
Backwash water pump, described backwash water pump is connected with described tripping device, for carrying out back flushing to described tripping device.
8. system according to claim 7, is characterized in that, comprises further:
Air compressor, described air compressor is connected with described tripping device, for carrying out air-water associating back flushing to described tripping device.
9. utilize the Sewage treatment systems described in any one of claim 1-8 to carry out the dirty water decontamination handles and reclaim a method for the carbon source in described sewage, it is characterized in that, comprising:
Adsorption unit is utilized to carry out adsorption treatment to sewage, to obtain the sewage after adsorption treatment and carbon source in sewage described in enrichment;
Tripping device is utilized to carry out filtering separation process to the sewage after described adsorption treatment, to obtain water outlet; And
Tank is utilized to collect described water outlet.
10. method according to claim 9, is characterized in that, the temporal summation that described sewage carries out described adsorption treatment and described separating treatment is 22-44 minute.
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| CN201610034941.6A CN105461181A (en) | 2016-01-19 | 2016-01-19 | Sewage treatment system and application thereof |
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Citations (5)
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| CN2370002Y (en) * | 1999-05-10 | 2000-03-22 | 浙江大学膜分离工程联合公司 | Film type biological reactor |
| CN102180565A (en) * | 2011-03-17 | 2011-09-14 | 清华大学 | Method and device for enhanced biological denitrogenation of municipal sewage |
| CN104118952A (en) * | 2014-07-08 | 2014-10-29 | 清华大学 | Sewage synchronous coagulation-adsorption-membrane condensation recycling pretreatment device and method |
| JP2015071155A (en) * | 2013-10-04 | 2015-04-16 | 三菱レイヨン株式会社 | Wastewater treatment method and production method of terephthalic acid |
| CN204417280U (en) * | 2014-10-09 | 2015-06-24 | 同济大学 | The device of Biological Pretreatment and film coupling integral system process villages and small towns tap water |
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2016
- 2016-01-19 CN CN201610034941.6A patent/CN105461181A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2370002Y (en) * | 1999-05-10 | 2000-03-22 | 浙江大学膜分离工程联合公司 | Film type biological reactor |
| CN102180565A (en) * | 2011-03-17 | 2011-09-14 | 清华大学 | Method and device for enhanced biological denitrogenation of municipal sewage |
| JP2015071155A (en) * | 2013-10-04 | 2015-04-16 | 三菱レイヨン株式会社 | Wastewater treatment method and production method of terephthalic acid |
| CN104118952A (en) * | 2014-07-08 | 2014-10-29 | 清华大学 | Sewage synchronous coagulation-adsorption-membrane condensation recycling pretreatment device and method |
| CN204417280U (en) * | 2014-10-09 | 2015-06-24 | 同济大学 | The device of Biological Pretreatment and film coupling integral system process villages and small towns tap water |
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