CN102583713A - Integrated bioaugmenting burned diatomite dynamic membrane gravity flow effluent-discharging drinking water purification process - Google Patents
Integrated bioaugmenting burned diatomite dynamic membrane gravity flow effluent-discharging drinking water purification process Download PDFInfo
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
The invention provides an integrated bioaugmenting burned diatomite dynamic membrane gravity flow effluent-discharging drinking water purification process and the mixed solution solid-liquid separation effluent-discharging process is completed by a dynamic membrane component driven by the gravity. The raw water on the earth's surface is pumped in a bioaugmenting burned diatomite dynamic membrane device, the bioaugmenting burned diatomite mixed solution in the device is utilized to perform biodegradation to pollutants and remove the pollutants; bioaugmenting burned diatomite forms a dynamic membrane on the dynamic membrane component, and the solid-liquid filtering separation of the mixed solution is performed under the driving of the fixed gravity waterhead between the inner liquid level of the reaction device and the water outlet liquid level. The process provided by the invention is simple, the purification of the raw water on the earth's surface can be realized in one reaction device; the high water permeability of burned diatomite is utilized, the dynamic membrane gravity flow filtering and effluent discharging can be realized under 0.2-0.7m of low fixed gravity waterhead, the power equipment is not required, the operation process is greatly simplified, the effluent quality is good; and the filtering flux of the diatomite dynamic membrane is 100L/m<2>h-300L/m<2>h, the continuous operation time is above 60h-270h and the effluent turbidity is stably below 0.3NTU. The process can be widely used in normal rural water supply or emergency rural water supply in the lack of electricity which is caused by natural disasters and unexpected events.
Description
Technical field
The present invention relates to integral bio-enhancement sintering zeyssatite Dynamic Membrane gravity flow water outlet drinking water purification process, can realize the Dynamic Membrane gravity flow water outlet under the action of gravity, need not the power-equipment effect, effluent quality is good, belongs to drinking water treatment field membrane sepn new technology.
Background technology
In recent years, the pollution of China's surface water quality is serious day by day.The problem that drinking water treatment faces mainly is that pollutant loads such as organism, ammonia nitrogen are higher in the former water, and the processing of common process (coagulation, deposition or clarification, filtration and sterilization) is removed the ability relative deficiency to organism and ammonia nitrogen etc.Through adding microbe carrier stuffing, enhancement microbiological carries out the efficient removal of pollutents such as organism, ammonia nitrogen in its surface growth, obtains investigator's concern gradually.
Dynamic Membrane, secondary film or the original position of being otherwise known as forms film, is meant through the new film that supporting body surface forms in the wide aperture of particulate matter in precoating paint or the mixed solution to be filtered.The formation of Dynamic Membrane can improve the interception capacity of macropore supporter, and effectively controlling diaphragm pollutes.Because the Dynamic Membrane good effect of separating solid from liquid, the membrane module cost is lower, back flushing is easy, is a kind of very promising novel solid-liquid separation technique.
To the contaminated situation of the most of former water of China, propose to add zeyssatite as microbe carrier in the reactor drum, formation absorption, biological degradation separate the novel drinking water treatment process that combines with Dynamic Membrane, reduce former pollutant in water content to greatest extent.For carrying out the solid-liquid separation of zeyssatite mixed solution, exploitation Dynamic Membrane solid-liquid separation technique.Adopt Dynamic Membrane gravity flow water outlet under the nose heave power effect of constant water; Realize the unpowered operation of Dynamic Membrane, can energy efficient, flow process simplifies the operation; Have good application prospects, use in the emergency water supply of rural area when being particluarly suitable at ordinary times rural area or natural disaster and accident generation electric power and lacking.
Summary of the invention
The object of the invention be to provide a kind of flow process simple, can effectively remove pollutents such as organism, ammonia nitrogen, suspended substance in the former water in the face of land, and can realize relying on the formed fixedly action of gravity of liquid level water level difference head to drive the integral bio-enhancement sintering zeyssatite Dynamic Membrane gravity flow water outlet drinking water purification process of Dynamic Membrane gravity flow water outlet.
The former water pollutant in the face of land of the present invention is removed mainly and is removed by mixed solution microbiological deterioration in the biological reinforced sintering zeyssatite Dynamic Membrane reaction unit, and mixed solution solid-liquid separation exiting water process is by fixedly action of gravity head driving dynamic film component (flat or tubular type) completion.Face of land raw water pump is gone in the integral bio-enhancement sintering zeyssatite Dynamic Membrane gravity flow discharging device, utilize that biological reinforced sintering zeyssatite mixed solution carries out the biological degradation and the removal of pollution substance in this device; Biological reinforced sintering zeyssatite forms Dynamic Membrane on dynamic film component surface, and in reaction unit between liquid level and the water outlet the formed fixedly action of gravity of liquid level water level difference head drive and carry out mixed solution filtration water outlet down; The stirrer that is provided with is with former water and biological reinforced sintering zeyssatite mixed solution thorough mixing, and dissolved oxygen is provided by the gas blower aeration in the mixed solution.
The integral bio-enhancement sintering zeyssatite Dynamic Membrane gravity flow discharging device drinking water purification process that the present invention proposes, said technology is divided into the unloading phase that biological reinforced sintering zeyssatite is spontaneous being cultivated and the device stable operation stage after the biological reinforced sintering zeyssatite mixed solution cultivation maturation; All comprise precoating, filtration and back flushing three phases unloading phase of the spontaneous cultivation of biological reinforced sintering zeyssatite and in the stable operation stage; Adopt biological reinforced sintering zeyssatite Dynamic Membrane reaction unit to remove the former water pollutant in the face of land; Said biological reinforced sintering zeyssatite Dynamic Membrane reaction unit is made up of water purifying tank 1, intake pump 2, stirrer 3, dynamic film component 4 and gas blower 6; Wherein: dynamic film component 4 adopts submerged to install, and is positioned at water purifying tank 1 middle part, and gas blower 6 passes through aeration tube to water purifying tank 1 bottom aeration; Aeration tube is positioned at dynamic film component 4 belows; Stirrer 3 inserts in the water purifying tank 1, and intake pump 2 is connected water purifying tank 1 top one end water-in through pipeline with valve, and water-in is higher than water purifying tank 1 liquid level; Water purifying tank 1 one sides are provided with gravity flow water outlet 5, and waterhead forms fixedly action of gravity head between water purifying tank 1 liquid level and the gravity flow water outlet 5; Concrete steps are following:
(1) the spontaneous cultivation of biological reinforced sintering zeyssatite the unloading phase
Select for use particle diameter be the powder sintered zeyssatite of 10-35 micron as microbe carrier, adopt the spontaneous culture method of mikrobe to cultivate biological sintering zeyssatite; Biological reinforced sintering zeyssatite Dynamic Membrane reaction unit starts first day; In water purifying tank 1, once add sintering zeyssatite; Make that powder sintered zeyssatite concentration reaches 10000mg/L in the water purifying tank 1; Later in water purifying tank 1, add powder sintered zeyssatite continuously every day, make that powder sintered zeyssatite content reaches 15000-20000mg/L in the water purifying tank 1; In the biological reinforced sintering zeyssatite Dynamic Membrane reaction unit initial start stage 15-20d; Manual work adds food glucose as carbon source, improves the rate of rise of mikrobe, measures the content of ammonia nitrogen, phosphorus in the former water in the pending face of land; And permanganate index; According in ammonia nitrogen, two testing indexs of phosphorus less one as the control matching criterion, according to the carbon containing nutritive substance: ammonia nitrogen: the phosphorus mass ratio is 100: 5: 1 a ratio, calculates required carbon source amount; Calculated value deducts permanganate index measured value in the former water, is the carbon source dosage; In the unloading phase of the spontaneous cultivation of biological reinforced sintering zeyssatite, the even flow operation scheme is all adopted in water inlet, water outlet, and dissolved oxygen concentration is 2.0-3.0mg/L in the control water purifying tank 1, and hydraulic detention time is 2-8h; The zeyssatite mixed solution does not carry out spoil disposal; After 20-30 days, biological reinforced sintering zeyssatite concentration is 15000-20000mg/L in the biological reinforced sintering zeyssatite Dynamic Membrane device water purifying tank 1, and biological reinforced sintering zeyssatite forms; Afterwards, device gets into stable operation stage; In the unloading phase of the spontaneous cultivation of whole biological reinforced sintering zeyssatite, the Dynamic Membrane operational process comprises precoating, filtration and back flushing;
(2) the device stable operation stage after the biological reinforced sintering zeyssatite mixed solution cultivation maturation
The even flow operation scheme is all adopted in water inlet, water outlet, and water inlet is degraded through the biological reinforced sintering zeyssatite mixed solution of intake pump elder generation in treating pond 1, and dissolved oxygen concentration is 2.0-3.0mg/L in the water purifying tank 1, and hydraulic detention time is 2-8h; The residence time in the control water purifying tank 1 is 50-70 days, the sintering zeyssatite weight additional according to material balance calculating needs; The supported gradually net of biological reinforced sintering zeyssatite mixed solution is held back the formation Dynamic Membrane, and the Dynamic Membrane precoating is accomplished and continued 15-20min; Biological reinforced sintering zeyssatite Dynamic Membrane operational process comprises precoating, filtration and back flushing in this stage;
Wherein: the device stable operation stage that biological reinforced sintering zeyssatite is spontaneous cultivate the unloading phase and biological reinforced sintering zeyssatite mixed solution is cultivated after the maturation includes precoating, filtration and back flushing, and concrete operations are following:
1) zeyssatite Dynamic Membrane gravity precoating
During the Dynamic Membrane precoating, the supporter assembly begins water outlet under the vacuum pump suction function, dynamic membrane support body lasting water outlet under fixedly the action of gravity head drives afterwards; The unloading phase: form Dynamic Membrane through not cultured sintering zeyssatite on the dynamic film component surface, accomplish the Dynamic Membrane precoating process of dynamic film component, the precoating time is 15-20min; Stable operation stage: the supported gradually net of biological reinforced sintering zeyssatite mixed solution is held back the formation Dynamic Membrane, and the Dynamic Membrane precoating is accomplished and continued 15-20min;
2) zeyssatite Dynamic Membrane gravity filtration water outlet
After the Dynamic Membrane precoating finishes, switch, get into the Dynamic Membrane gravity filtration water outlet stage through pipeline valve, in water purifying tank between liquid level and the water outlet fixedly the action of gravity head drive down the filtration water outlet of can flowing automatically of the zeyssatite Dynamic Membrane of assurance formation; The unit surface membrane filtration flux stabilized of control dynamic film component is at 100L/m
2H-300L/m
2Between the h, continuous operating time surpasses 60h-270h, and delivery turbidity is stable less than 0.3NTU;
In the dynamic membrane filtering process, the cross-flow on Dynamic Membrane surface is formed by supporter bottom aeration mode, also controls the growth of Dynamic Membrane thickness simultaneously for the mixed solution oxygenation.GWR is calculated according to oxygen requirement and is confirmed minimum being not less than 1: 1.
3) zeyssatite Dynamic Membrane air back flushing
When zeyssatite Dynamic Membrane gravity filtration effluent flux drops to preset value (100L/m
2H-200L/m
2H) time, need the zeyssatite Dynamic Membrane is carried out back flushing, adopt air backwashing time 1 min-2 min, intake pressure 9.8-49 kPa, Dynamic Membrane is come off fully; The dynamic membrane support body assembly does not need regular matting; Control and operation can whole-course automation controls.
Among the present invention; Adopt 180-250 order stainless (steel) wire or nylon wire as dynamic membrane support body, supporting body structure adopts flat or tubular type, calculates according to the design flux and confirms the required supporting network total area; And, select the supporting network component count according to single supporting network size.
Among the present invention, during the Dynamic Membrane precoating, the supporter assembly begins water outlet under the vacuum pump suction function, supporter assembly lasting water outlet under fixedly the action of gravity head drives afterwards, and the supported gradually net of zeyssatite mixed solution is held back the formation Dynamic Membrane.
Among the present invention, said sintering zeyssatite mainly is made up of macropore, the about 0.2-0.4 micron of mean pore size, the average about 0.3261m of BET specific surface area
2/ g.
Among the present invention, said action of gravity head height is a 0.2-0.7 rice.
Compare the outstanding feature of present method with traditional technology:
(1) biological reinforced sintering zeyssatite dynamic membrane system has only a Dynamic Membrane water purifying tank to constitute, and technical process is simple; Organism, ammonia nitrogen etc. can be removed through biological reinforced sintering zeyssatite mixed solution microbiological deterioration process in the former water in the face of land; Adopt 180-250 order stainless (steel) wire or nylon wire as dynamic membrane support body, the membrane module cost of investment is low, but automatic controlling level is high.
(2) under fixedly the action of gravity head drives between liquid level and the water outlet in water purifying tank; Carry out the mixed solution solid-liquid separation; Realize dynamic membrane filtering gravity flow water outlet, need not the additionaling power effect, and have acting head low, filter out the characteristics that water flux is big and parallel-adder settle-out time is long.
(3) in water purifying tank, add sintering zeyssatite, mainly constitute, can significantly improve the filtration flux of zeyssatite Dynamic Membrane by macropore (0.2-0.4 micron); Select the fixedly action of gravity head driving of 0.2-0.7 rice for use, zeyssatite Dynamic Membrane gravity flow filtration flux can be stabilized in 100L/m
2H-300L/m
2Between the h, continuous operating time surpasses 60h-270h, and delivery turbidity is stable less than 0.3NTU.
(4) biological reinforced sintering zeyssatite Dynamic Membrane does not exist that film pollutes problem rambunctious in the conventional membrane bioreactor, and back flushing is easy, and operational process need not carry out any matting except that normal aeration and air back flushing.Water outlet is filtered in the Dynamic Membrane gravity flow, and the simplified operation program also reduces energy consumption and working cost.Widespread use in the emergency water supply of rural area when the present invention is adapted at rural area water supply at ordinary times or natural disaster and accident generation electric power shortage.
Description of drawings
Fig. 1 is the embodiment process flow sheet.
Label among the figure: 1 is biological intensified-sintered zeyssatite Dynamic Membrane gravity flow water outlet water purifying tank; 2 is intake pump; 3 is stirrer; 4 is dynamic film component; 5 are Dynamic Membrane gravity flow water outlet; 6 is gas blower; H is that Dynamic Membrane is flow automatically and hydropexis action of gravity head.
Embodiment
Combine accompanying drawing to further specify the present invention through embodiment below.
Embodiment 1
The powder sintered zeyssatite that adopts in the implementation process, particle diameter 10-35 micron, the about 0.2-0.4 micron of mean pore size, the average about 0.3261m of BET specific surface area
2/ g.Adopt flat dynamic membrane support body assembly to filter water outlet.Face of land Yuan Shui takes from river, the face of land, Shanghai, adopts the spontaneous culture method of mikrobe to cultivate biological reinforced sintering zeyssatite.
(1) the spontaneous cultivation of biological reinforced sintering zeyssatite
1) zeyssatite dosing method
Reaction unit starts first day; In device, once add sintering zeyssatite; Make that powder sintered zeyssatite mixed liquid concentration reaches 10000mg/L in the water purifying tank 1; Later in reaction unit, add powder sintered zeyssatite continuously every day, make that powder sintered zeyssatite content reaches 18000mg/L in the reaction unit.
2) add and add nutrition
In the initial start stage 15d of system, manual work adds food glucose as carbon source, makes reaction unit water inlet permanganate index be about 10mg/L, improves the rate of rise of mikrobe.Measure the content of ammonia nitrogen, phosphorus in the former water in the pending face of land; And permanganate index; According to a less conduct control matching criterion in ammonia nitrogen, two testing indexs of phosphorus; According to the carbon containing nutritive substance: ammonia nitrogen: the relation of phosphorus=100: 5: 1, calculate required carbon source amount, calculated value deducts that the permanganate index measured value is the carbon source dosage in the former water.
After 20 days, mixed solution maintains 18000mg/L in the biological reinforced sintering zeyssatite Dynamic Membrane device, and biological reinforced sintering zeyssatite forms.Afterwards, device gets into stable operation stage.
(2) device operational conditions
The unloading phase of the spontaneous cultivation of biological reinforced sintering zeyssatite and in the stable operation stage, the even flow operation scheme is all adopted in water inlet, water outlet, and dissolved oxygen concentration is 2.0-3.0mg/L in the water purifying tank 1, and hydraulic detention time is 2-8h; The unloading phase zeyssatite mixed solution do not carry out spoil disposal; Stable operation stage, the biological reinforced residence time of sintering zeyssatite mixed solution in water purifying tank 1 is 50 days, the sintering zeyssatite weight additional according to material balance calculating needs.
Wherein: the device stable operation stage that biological reinforced sintering zeyssatite is spontaneous cultivate the unloading phase and biological reinforced sintering zeyssatite mixed solution is cultivated after the maturation includes precoating, filtration and back flushing.
(3) biological reinforced sintering zeyssatite Dynamic Membrane operational process
1) zeyssatite Dynamic Membrane gravity precoating
Adopt 200 order stainless (steel) wires as dynamic membrane support body, supporting body structure adopts flat, and dynamic film component adopts immersion to install.The dynamic film component operation comprises precoating, filtration and back flushing three phases.During the Dynamic Membrane precoating, the supporter assembly begins water outlet under the vacuum pump suction function, and dynamic membrane support body is in 0.5m lasting water outlet under fixedly the action of gravity head drives afterwards; The unloading phase: form Dynamic Membrane through not cultured sintering zeyssatite on the dynamic film component surface, accomplish the Dynamic Membrane precoating process of dynamic film component, the precoating time is 15-20min; Stable operation stage: the supported gradually net of biological reinforced sintering zeyssatite mixed solution is held back the formation Dynamic Membrane, and the Dynamic Membrane precoating is accomplished and continued 15-20min;
In the Dynamic Membrane precoating process, the cross-flow of supporting body surface is formed by supporter bottom aeration mode, for the thickness that the Dynamic Membrane precoating forms is also controlled in the mixed solution oxygenation simultaneously.
2) zeyssatite Dynamic Membrane gravity filtration water outlet
After the Dynamic Membrane precoating finishes, switch, get into the Dynamic Membrane gravity filtration water outlet stage through pipeline valve.In fixedly action of gravity head effect of 0.5m, realize zeyssatite Dynamic Membrane gravity flow water outlet, filtration flux can be stabilized in 250L/m
2H-200L/m
2H, continuous operating time surpasses 90h, and delivery turbidity is stable less than 0.25NTU.In the dynamic membrane filtering process, the cross-flow on Dynamic Membrane surface is formed by supporter bottom aeration mode, also controls the growth of Dynamic Membrane thickness simultaneously for the mixed solution oxygenation, and GWR is 1:1.
3) zeyssatite Dynamic Membrane air back flushing
When zeyssatite Dynamic Membrane gravity filtration effluent flux drops to preset value 200L/m
2During h, need the zeyssatite Dynamic Membrane is carried out back flushing.Adopt air backwashing time 2 min, intake pressure 19.6 kPa, Dynamic Membrane is come off fully.
Embodiment 2
The powder sintered zeyssatite that adopts in the implementation process, particle diameter 10-35 micron, the about 0.2-0.4 micron of mean pore size, the average about 0.3261m of BET specific surface area
2/ g.Adopt tubular dynamic membrane supporter assembly to filter water outlet.Face of land Yuan Shui takes from river, the face of land, Shanghai, adopts the spontaneous culture method of mikrobe to cultivate biological sintering zeyssatite.
(1) the spontaneous cultivation of biological reinforced sintering zeyssatite
1) zeyssatite dosing method:
Reaction unit starts first day; In device, once add sintering zeyssatite; Make that powder sintered zeyssatite mixed liquid concentration reaches 10000mg/L in the water purifying tank 1; Later in reaction unit, add powder sintered zeyssatite continuously every day, make that powder sintered zeyssatite content reaches 15000mg/L in the reaction unit.
2) add and add nutrition
In the initial start stage 15d of system, manual work adds food glucose as carbon source, makes reaction unit water inlet permanganate index be about 10mg/L, improves the rate of rise of mikrobe.Measure the content of ammonia nitrogen, phosphorus in the former water in the pending face of land; And permanganate index; According to a less conduct control matching criterion in ammonia nitrogen, two testing indexs of phosphorus; According to the carbon containing nutritive substance: ammonia nitrogen: the relation of phosphorus=100: 5: 1, calculate required carbon source amount, calculated value deducts permanganate index measured value in the former water.Be the carbon source dosage.
After 20 days, mixed solution maintains 15000mg/L in the biological reinforced sintering zeyssatite Dynamic Membrane device, and biological reinforced sintering zeyssatite forms.Afterwards, device gets into stable operation stage.
(2) device operational conditions
The unloading phase of the spontaneous cultivation of biological reinforced sintering zeyssatite and in the stable operation stage, the even flow operation scheme is all adopted in water inlet, water outlet, and dissolved oxygen concentration is 2.0-3.0mg/L in the water purifying tank 1, and hydraulic detention time is 2-8h; The unloading phase zeyssatite mixed solution do not carry out spoil disposal; Stable operation stage, the biological reinforced residence time of sintering zeyssatite mixed solution in water purifying tank 1 is 60 days, the sintering zeyssatite weight additional according to material balance calculating needs.
Wherein: the device stable operation stage that biological reinforced sintering zeyssatite is spontaneous cultivate the unloading phase and biological reinforced sintering zeyssatite mixed solution is cultivated after the maturation includes precoating, filtration and back flushing.
(3) biological reinforced sintering zeyssatite Dynamic Membrane operational process
1) zeyssatite Dynamic Membrane gravity precoating
Adopt 200 order stainless (steel) wires as dynamic membrane support body, supporting body structure adopts tubular type, and dynamic film component adopts immersion to install.The dynamic film component operation comprises precoating, filtration and back flushing three phases.During the Dynamic Membrane precoating, the supporter assembly begins water outlet under the vacuum pump suction function, dynamic membrane support body lasting water outlet under fixing action of gravity head 0.2m effect afterwards; The unloading phase: form Dynamic Membrane through not cultured sintering zeyssatite on the dynamic film component surface, accomplish the Dynamic Membrane precoating process of dynamic film component, the precoating time is 15-20min; Stable operation stage: the supported gradually net of biological reinforced sintering zeyssatite mixed solution is held back the formation Dynamic Membrane, and the Dynamic Membrane precoating is accomplished and continued 15-20min;
In the Dynamic Membrane precoating process, the cross-flow of supporting body surface is formed by supporter bottom aeration mode, also controls the thickness that the Dynamic Membrane precoating forms simultaneously for the mixed solution oxygenation, and GWR is 1: 1.
2) zeyssatite Dynamic Membrane gravity filtration water outlet
After the Dynamic Membrane precoating finishes, switch, get into the Dynamic Membrane gravity filtration water outlet stage through pipeline valve.In fixedly action of gravity head effect of 0.2m, realize zeyssatite Dynamic Membrane gravity flow water outlet, filtration flux can be stabilized in 200L/m2 h-100L/m2 h, and continuous operating time surpasses 60h, and delivery turbidity is stable less than 0.25NTU.In the dynamic membrane filtering process, the cross-flow on Dynamic Membrane surface is formed by supporter bottom aeration mode, also controls the growth of Dynamic Membrane thickness simultaneously for the mixed solution oxygenation, and GWR is 1:1.
3) zeyssatite Dynamic Membrane air back flushing
When zeyssatite Dynamic Membrane gravity filtration effluent flux drops to preset value 100L/m
2During h, need the zeyssatite Dynamic Membrane is carried out back flushing.Adopt air backwashing time 1 min, intake pressure 19.6 kPa, Dynamic Membrane is come off fully.
Claims (4)
1. integral bio-enhancement sintering zeyssatite Dynamic Membrane gravity flow discharging device drinking water purification process is characterized in that said technology is divided into the unloading phase that biological reinforced sintering zeyssatite is spontaneous being cultivated and the device stable operation stage after the biological reinforced sintering zeyssatite mixed solution cultivation maturation; All comprise precoating, filtration and back flushing three phases unloading phase of the spontaneous cultivation of biological reinforced sintering zeyssatite and in the stable operation stage; Adopt biological reinforced sintering zeyssatite Dynamic Membrane reaction unit to remove the former water pollutant in the face of land; Said biological reinforced sintering zeyssatite Dynamic Membrane reaction unit is made up of water purifying tank (1), intake pump (2), stirrer (3), dynamic film component (4) and gas blower (6); Dynamic film component (4) adopts submerged to install, and is positioned at water purifying tank (1) middle part, and gas blower (6) passes through aeration tube to water purifying tank (1) bottom aeration; Aeration tube is positioned at dynamic film component (4) below; Stirrer (3) inserts in the water purifying tank (1), and intake pump (2) is connected water purifying tank (1) top one end water-in through pipeline with valve, and water-in is higher than water purifying tank (1) liquid level; Water purifying tank (1) one side is provided with gravity flow water outlet (5), and waterhead forms fixedly action of gravity head between water purifying tank (1) liquid level and the gravity flow water outlet (5); Concrete steps are following:
(1) the spontaneous cultivation of biological reinforced sintering zeyssatite the unloading phase
Select for use particle diameter be the powder sintered zeyssatite of 10-35 micron as microbe carrier, adopt the spontaneous culture method of mikrobe to cultivate biological sintering zeyssatite; Biological reinforced sintering zeyssatite Dynamic Membrane reaction unit starts first day; In water purifying tank 1, once add sintering zeyssatite; Make that powder sintered zeyssatite concentration reaches 10000mg/L in the water purifying tank 1; Later in water purifying tank 1, add powder sintered zeyssatite continuously every day, make that powder sintered zeyssatite content reaches 15000-20000mg/L in the water purifying tank 1; In the biological reinforced sintering zeyssatite Dynamic Membrane reaction unit initial start stage 15-20d; Manual work adds food glucose as carbon source, through measuring the content and the permanganate index of ammonia nitrogen, phosphorus in the former water in the pending face of land, according to a less conduct control matching criterion in ammonia nitrogen, two testing indexs of phosphorus; According to the carbon containing nutritive substance: ammonia nitrogen: the phosphorus mass ratio is 100: 5: 1 a ratio; Calculate required carbon source amount, calculated value deducts permanganate index measured value in the former water, is the carbon source dosage; In the unloading phase of the spontaneous cultivation of biological reinforced sintering zeyssatite, the even flow operation scheme is all adopted in water inlet, water outlet, and dissolved oxygen concentration is 2.0-3.0mg/L in the control water purifying tank 1, and hydraulic detention time is 2-8h; Biological reinforced sintering zeyssatite concentration is 15000-20000mg/L in the biological reinforced sintering zeyssatite Dynamic Membrane device water purifying tank 1, and biological reinforced sintering zeyssatite forms; Afterwards, device gets into stable operation stage; In the unloading phase of the spontaneous cultivation of whole biological reinforced sintering zeyssatite, the Dynamic Membrane operational process comprises precoating, filtration and back flushing;
(2) the device stable operation stage after the biological reinforced sintering zeyssatite mixed solution cultivation maturation
The even flow operation scheme is all adopted in water inlet, water outlet; Water inlet is degraded through the biological reinforced sintering zeyssatite mixed solution of intake pump elder generation in treating pond; The residence time in the control water purifying tank is 50-70 days, the sintering zeyssatite weight additional according to material balance calculating needs; The supported gradually net of biological reinforced sintering zeyssatite mixed solution is held back the formation Dynamic Membrane, and the Dynamic Membrane precoating is accomplished and continued 15-20min; Biological reinforced sintering zeyssatite Dynamic Membrane operational process comprises precoating, filtration and back flushing in this stage;
Wherein: the device stable operation stage that biological reinforced sintering zeyssatite is spontaneous cultivate the unloading phase and biological reinforced sintering zeyssatite mixed solution is cultivated after the maturation includes precoating, filtration and back flushing, and concrete operations are following:
1) zeyssatite Dynamic Membrane gravity precoating
During the Dynamic Membrane precoating, the supporter assembly begins water outlet under the vacuum pump suction function, dynamic membrane support body lasting water outlet under fixedly the action of gravity head drives afterwards; The unloading phase: form Dynamic Membrane through not cultured sintering zeyssatite on the dynamic film component surface, accomplish the Dynamic Membrane precoating process of dynamic film component, the precoating time is 15-20min; Stable operation stage: the supported gradually net of biological reinforced sintering zeyssatite mixed solution is held back the formation Dynamic Membrane, and the Dynamic Membrane precoating is accomplished and continued 15-20min;
2) zeyssatite Dynamic Membrane gravity filtration water outlet
After the Dynamic Membrane precoating finishes, switch through pipeline valve, get into the Dynamic Membrane gravity filtration water outlet stage, under fixedly the action of gravity head drove between liquid level and the water outlet in water purifying tank, water outlet was filtered in the zeyssatite Dynamic Membrane gravity flow that assurance forms; The unit surface membrane filtration flux stabilized of control dynamic film component is at 100L/m
2H-300L/m
2Between the h, continuous operating time surpasses 60h-270h, and delivery turbidity is stable less than 0.3NTU;
In the dynamic membrane filtering process, the cross-flow on Dynamic Membrane surface is formed by supporter bottom aeration mode, and GWR is calculated according to oxygen requirement and confirmed minimum being not less than 1: 1;
3) zeyssatite Dynamic Membrane air back flushing
When zeyssatite Dynamic Membrane gravity filtration effluent flux drops to preset value 100L/m
2H-200L/m
2During h, the zeyssatite Dynamic Membrane is carried out back flushing, adopt air backwashing time 1 min-2min, intake pressure 9.8-49kPa, Dynamic Membrane is come off fully; The dynamic membrane support body assembly does not need regular matting.
2. technology according to claim 1 is characterized in that dynamic membrane support body adopts 180-250 order stainless (steel) wire or nylon wire, and supporting body structure adopts flat or tubular type.
3. technology according to claim 1 is characterized in that said sintering zeyssatite mainly is made up of macropore, and mean pore size is the 0.2-0.4 micron, average BET specific surface area 0.3261m
2/ g.
4. technology according to claim 1 is characterized in that said action of gravity head height is a 0.2-0.7 rice.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100450771A CN102583713B (en) | 2012-02-27 | 2012-02-27 | Integrated bioaugmenting burned diatomite dynamic membrane gravity flow effluent-discharging drinking water purification process |
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| CN102963973A (en) * | 2012-12-10 | 2013-03-13 | 同济大学 | Method for purifying raw water by using biologically-enhanced diatomite-dynamic membrane ultrafiltration-supported separation process |
| CN102976498A (en) * | 2012-11-28 | 2013-03-20 | 同济大学 | Microalgae dynamic membrane recovery process |
| CN108380046A (en) * | 2018-03-07 | 2018-08-10 | 同济大学 | A kind of dynamic film sewage treatment system for the processing of lavatory fecaluria |
| CN112830640A (en) * | 2021-02-25 | 2021-05-25 | 天津市海跃水处理高科技有限公司 | Water treatment membrane and water treatment device and method |
| CN114772820A (en) * | 2022-05-25 | 2022-07-22 | 哈尔滨工业大学水资源国家工程研究中心有限公司 | Backwashing water recovery equipment |
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| CN108380046A (en) * | 2018-03-07 | 2018-08-10 | 同济大学 | A kind of dynamic film sewage treatment system for the processing of lavatory fecaluria |
| CN112830640A (en) * | 2021-02-25 | 2021-05-25 | 天津市海跃水处理高科技有限公司 | Water treatment membrane and water treatment device and method |
| CN114772820A (en) * | 2022-05-25 | 2022-07-22 | 哈尔滨工业大学水资源国家工程研究中心有限公司 | Backwashing water recovery equipment |
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