CN102531160A - Reclaimed water recycling device for sequencing batch membrane bioreactor (SBMBR) - Google Patents
Reclaimed water recycling device for sequencing batch membrane bioreactor (SBMBR) Download PDFInfo
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Abstract
The invention provides a reclaimed water recycling device for a sequencing batch membrane bioreactor (SBMBR). The reclaimed water recycling device consists of five main parts namely two completely identical SBR (sequencing batch reactor) reaction water tanks, a membrane biological reaction tank, a reclaimed water tank, a pipeline system and a PLC (programmable logic controller) automatic control system, wherein in each SBR reaction water tank, raw water is subjected to a biodegradation reaction by adopting a sequencing batch operation process to remove organic pollutants, nitrogen and phosphorous; two membrane components are placed in the membrane biological reaction tank so that the raw water is further subjected to biodegradation treatment, and effluent is generated; the reclaimed water tank is used for storing the reclaimed water obtained after treatment and providing water required for back washing; the pipeline system comprises equipment such as manually and electrically operated valves, a pump and a flowmeter and is in charge of inflow, SBR outflow, MBR (membrane bio-reactor) membrane suction outflow and whole process system aeration; and the automatic control system mainly controls the normal operation and stopping of the whole system equipment and comprises a PLC control cabinet, an electric contact vacuum pressure gage, a liquid level controller and the like.
Description
Technical field
The present invention relates to a kind of middle water treatment device, water recycling device in especially a kind of sequencing batch membrane bioreactor (SBMBR).
Background technology
Water is meant sewage after treatment in the what is called, reaches the water quality standard of regulation, can reusable within the specific limits undrinkable water, and like waters such as lavatory flushing, green land irrigation, urban look environment, agricultural, factory's cooling, carwash.The middle most typical representative of water reuse is a Japan.Water reuse starting is later relatively in China, and Beijing Environmental Protection Science Research Inst. had built up first mid-water engineering in institute in 1985.In the common small scale of water technology, technology is high, expense is expensive, it requires high-caliber processing, water distribution system independently, special user pipe, gate system and skilled operation.
(Membrane Bioreactor MBR) is emerging in recent years wastewater treatment and reuse technology to membrane bioreactor, and this technology is that membrane separation technique and traditional wastewater biologic treating technique are organically combined and the new process for treating waste water of generation.Water reuse the MBR technology has been handled from traditional wastewater and has been extended to.Different according to the effect of membrane module in membrane bioreactor, can be divided into solid-liquid separation membrane bioreactor, aeration membrane bioreactor and spe membrane bio-reactor three major types.What present technique adopted is the solid-liquid separation membrane bioreactor.SBR is the abbreviation of sequence intermittent activated sludge process (Sequencing Batch Reactor Activated Sludge Process), is a kind of active sludge sewage disposal technology that moves by the intermittent aeration mode, claims sequencing batch active sludge again.A complete operating process of SBR technology, that is the operating process of each batch reactor when handling waste water comprises following 5 stages: the water inlet phase; Reaction period; The deposition phase; The draining spoil disposal phase; Lay-up period.SBMBR combines SBR with MBR, kept both advantages, has improved the ability of system's denitrogenation dephosphorizing.PLC is a kind of specially under industrial environment, using the electronic installation of the digital operation operation that designs.Having safety height, superior performance, advantage such as easy to use, it is used widely at aspects such as industry automatic control, electromechanical integration, is one of three big technological pillars of industrial automation.
At water treatment field, sequencing batch membrane bioreactor (SBMBR) more and more comes into one's own as the principal facility of middle water treatment in the sub-district.Present technique utilizes programmable logic controller (PLC) to design middle water recycling device automatic control system, has realized the robotization control of centering water recycling device.Along with the development of membrane technique, membrane technique has been penetrated into the every field of WWT, except being used for separately the WWT, more mostly to be to combine to solve the insoluble problem of traditional method with other various technologies.Sequencing batch membrane bioreactor (SBMBR) technology is a kind of novel sewage disposal technology that is combined by sequencing batch active sludge (SBR) and membrane bioreactor (MBR); Usually move with anoxic one aerobic round-robin mode; Can in same reactor drum, realize nitrification and denitrification, SBMBR has good while denitrogenation dephosphorizing effect.Middle water recycling device SBMBR system non-stop run meeting aggravation film pollutes speed, causes membrane flux to descend, and therefore just requires the suction pump discontinuous operation.(Program Logical Controller is a kind of specially under industrial environment, using the electronic installation of the digital operation operation that designs PLC) to programmable logic controller.Have safety height, superior performance, advantage such as easy to use.Water recycling device is used automatic technology among the SBMBR; Utilize PLC timing control, functions such as counting control etc. to satisfy automatic control requirement to the SBMBR intermediate water reuse system, the denitrogenation dephosphorizing performance that adopts the operation scheme of sequence batch (to come reinforced film biological reactor, make its combination process SBMBR not only simple to operate, be convenient to robotization and control; Effluent quality is safe and reliable; And the realization denitrification and phosphorus removal integration, can remove nitrogen, phosphorus and organic substance fully effectively simultaneously, water reuse standard in reaching.The automatic equipment that with PLC is core can make system's fully automatic operation under non-maintaining situation, realizes the suction pump discontinuous operation, decelerating membrane pollution.
The same with traditional activated sludge process, can effectively remove organic pollutant based on the aerobic MBR technology of activated sludge process, nitrification is strong and a little less than the denitrification, so denitrogenation dephosphorizing efficient is not high.Improve its denitrogenation dephosphorizing effect; Usually the method that adopts is to combine with denitrification dephosphorization technique; But this MBR treatment system long flow path, HRT is long, energy consumption is high; Therefore, explore a kind of lack flow process, less energy-consumption can remove organism and nitrogen, phosphorus simultaneously, but the novel MBR technology of its water outlet direct reuse is just seemed highly significant.Combination process SBMBR is a purpose with middle water reuse, and the treatment process through with sequencing batch active sludge and membrane bioreactor combination forms double-reactor SBMBR system, strengthens SBMBR denitrification and denitrogenation dephosphorizing ability.
There is contradiction in the biological denitrification phosphorous removal technique.Mud problem in age, nitrifier are as the main body of nitrifying process, and this quasi-microorganism belongs to autotrophic type obligate aerobic bacteria, and reproduction speed is slow, and generation time is long, and the mud that needs is long age, and mostly polyP bacteria is short mikrobe from generation to generation, and the mud that needs is short age.Nitrate salt problem, returned sluge are taken nitrate salt in the upper level reactor drum to inevitably, and what the phosphorus bacterium was released in the existence of nitrate salt influence releases phosphorus efficient, even can cause polyP bacteria directly to inhale phosphorus.Water recycling device adopts the operation scheme of double-reactor among the SBMBR; The MBR reactor drum is beneficial to the growth and breeding of long nitrated and nitrite bacteria generation time because the film crown_interception can prolong the sludge retention time (SRT) of bio-reactor, and the mikrobe in the reactor drum can increase to greatest extent; Therefore the biological activity of mud is high; Reduce sludge yield, the ability of absorption and degradation of organic substances is stronger, also has nitrated preferably ability simultaneously.In addition, the operation scheme of SBR formula is that condition has been created in the growth of dephosphorization bacterial, has also satisfied the needs of denitrogenation simultaneously, makes interior efficient nitrogen, phosphorus and the organism removed of while of realizing of single reaction vessel become possibility.When high sludge concentration guarantees phosphor-removing effect, improve nitrated and organic matter removal ability.The MBR reactor drum of water recycling device is divided into the anoxic section and becomes reconciled and support section among the SBMBR; Returned sluge is back to the sbr reactor device from the anoxic section; The nitrate salt that returned sluge carries in the anoxic pond utilizes the carbon source denitrification, thereby can be that the phosphorus bacterium of releasing in the sbr reactor device is fully released phosphorus.
Exploitation is fit to cities and towns, and how the middle water recovering process equipment that use in sub-district and hotel makes limited spatial manipulation scale reach the difficult problem that maximum becomes middle water reuse.The water recycling device system layout is compact among the SBMBR, and technical process is short, and floor space is little, is applicable to that cities and towns, sub-district and the hotel of the limited medium treatment scale in space used.Water recycling device utilizes the membrane sepn draining in step of reaction among the SBMBR, secondary sedimentation basins need be set, and can reduce the cycling time of traditional SBR.
Summary of the invention
The prior-art devices complicated operation, system's property safe and reliable to operation is low.Water recycling device is for the system cycle of operation among the SBMBR; The automatic operation of safeguards system and water outlet effect; The security of strengthening system utilizes functions such as PLC timing control, counting control, has safety height, superior performance, easy to operate; Satisfy automatic control requirement, to the application of water recycling device among the SBMBR with promote significant to the SBMBR Sewage treatment systems.
One of the object of the invention is realized through following technical scheme:
Water recycling device is by two identical sbr reactor water tanks in this, membrane biological reaction case, middle water tank, five major portions compositions of piping system and PLC automatic control system.The interior employing of sbr reactor water tank sequence batch (operating procedure method is reacted former water biodegrade, removes organic pollutant and denitrogenation dephosphorizing, places two membrane modules in the membrane biological reaction case, and further biological degradation processing is also carried out water outlet; In water tank be used for the middle water of stores processor gained, and required water is provided for back flushing; Piping system comprises manually and equipment such as electrically operated valve, pump and under meter, is responsible for the aeration of water inlet, SBR water outlet, the suction water outlet of MBR film and whole process system; The normal operation of automatic control system major control total system device and stopping to comprise the PLC electrical control cubicles, electric contact vacuum pressure gauge, fluid level controller etc.
Because the cost of mineral membrane is higher relatively, at present, the film that is widely used in wastewater treatment is mainly processed by organic polymer material, like polyolefins, polyethylene kind, aromatic polyamide, gather fluoropolymer etc.The mould material that is applied to MBR needs existing good film-forming properties, thermostability, chemicalstability, and higher water flux and better pollution resistance ability are arranged again simultaneously, and unit expends low through fluid power, and the unit volume membrane area is big.That the principal mode of hyperfiltration membrane assembly has is flat, tubular type, spiral, capillary type, rod formula and tubular fibre formula etc.; Wherein spiral all higher with the packing density capillary type assembly; But because contamination resistance is poor; Generally be not used in membrane bioreactor, many in the membrane bioreactor at present with tubular type, tubular fibre formula and plate type membrane assembly.
The factor that another point needs to consider is the aperture of film; Because active sludge is to be made up of the accumulative microbe granular in the aeration tank; Wherein a part of pollutent is absorbed or sticks to the organic substance surface of mikrobe flco and colloidal substance by mikrobe; Although the diameter of particle depends on concentration, admixture and the temperature condition of mud; These particles still exist certain regularity of distribution, and Masaru Uehara research is thought and considered active sludge state and water flux, preferably selects the film in 0.10～0.40 μ m aperture.
Adopt the single piece type method of attachment, two films are arranged side by side in water tank, and are hose connection to header, are provided with the water outlet that valve can be controlled each membrane module.
Hardware control system is made up of other accessories such as programmable logic controller, SV and motorized valve, fluid level controller, solid state relay, various switches.
The SBMBR system process is: water intaking valve A1 opens, and the mixed solution that refluxes in former water after water pump lifting and the membrane reactor gets into sbr reactor device 1, and raw water pump stopped after liquid level was set in arrival, and A1 closes.Cycle starts, and stirs 90min, little aeration 30min, and aeration 120min realizes anaerobic/anoxic/aerobic alternative environment in the sbr reactor device fully, be 4h reaction time.Outlet valve C1 opens behind the end cycle, and the SBR water outlet gets into membrane reactor, and further degraded is thorough in membrane reactor, and the deposition and the bleeding stage of the crown_interception instead SBR technology of membrane module have been saved the sbr reactor cycle simultaneously.For shortening the period interval time of water outlet, guarantee the processing water yield of system, SBR pond 2 is set after the 1 operation half period of pond, starts, both operational conditionss are identical.
For the ease of system operation and equipment repair and maintenance, native system is provided with " automatically " and " manually " two kinds of operation scheme.Under " automatically " mode, can change equipment working state and high water tank parameter according to actual needs.The back flushing of film is the very effective measure that prevents that film from polluting in the system, is an important step of this Sewage treatment systems, and the effect of back flushing directly has influence on the water quality of film water outlet.Programming procedure has taken into full account the automatic control process to the film back flushing.After reaching the pressure that sets when the electric contact vacuum meter, system gets into the back flushing state automatically.Take into full account the uncontrollability factor in the programming procedure, be provided with MBR high water tank defence program.Can prevent effectively that the exposed water that reaches of film from overflowing water tank.
Prior art is undesirable to wastewater treatment efficiency, and being applied in has certain limitation in the actual engineering.Double-reactor SBMBR work simplification traditional SBR technology, and adopt membrane filtration to replace the second pond water outlet, obtained pollutant removal preferably, have very strong denitrification dephosphorization denitrification ability, water reuse standard during telolemma effluent quality satisfies.Adopt SBR and MBR bonded operation scheme, can make the settling property of mixed solution in the reactor drum keep good, sludge activity is higher.Through the concentration of reasonable control DO,,, strengthen its removal to nitrogen, phosphorus for cultivation, growth and the breeding of various functional microorganisms provides adapt circumstance so that in the SBMBR system, form anaerobic/anoxic/aerobic alternative environment.The operational condition of sequence batch (combines with membrane biological reactor process, has guaranteed that the SBMBR system can stablize, remove efficiently ammonia nitrogen, and the structure setting of double-reactor has been strengthened the ability of anti-shock loading.The removal of phosphorus is mainly carried out in the sbr reactor device, and its periodic reaction finishes the back and filters the precipitate phase that replaces traditional sequence batch (technology by membrane module, can avoid the influence of the phosphorus effect of releasing once more to system's dephosphorization treatment effect of PAOs.
Description of drawings
Below in conjunction with accompanying drawing specific embodiment of the present invention is done further detailed explanation.
Fig. 1 is the structure iron of membrane module
Fig. 2 is the logical flow chart of system
Embodiment
Below will combine accompanying drawing, the preferred embodiments of the present invention will be carried out detailed description; Should be appreciated that preferred embodiment has been merely explanation the present invention, rather than in order to limit protection scope of the present invention.
Water recycling device is by two identical sbr reactor water tanks in this, membrane biological reaction case, middle water tank, five major portions compositions of piping system and PLC automatic control system.The interior employing of sbr reactor water tank sequence batch (operating procedure method is reacted former water biodegrade, removes organic pollutant and denitrogenation dephosphorizing, places two membrane modules in the membrane biological reaction case, and further biological degradation processing is also carried out water outlet; In water tank be used for the middle water of stores processor gained, and required water is provided for back flushing; Piping system comprises manually and equipment such as electrically operated valve, pump and under meter, is responsible for the aeration of water inlet, SBR water outlet, the suction water outlet of MBR film and whole process system; The normal operation of automatic control system major control total system device and stopping to comprise the PLC electrical control cubicles, electric contact vacuum pressure gauge, fluid level controller etc.
The sbr reactor case is that right cylinder casing and support and the stirrer of taper formed the high 750mm of support, casing height overall 1100mm, diameter 600mm, the high 150mm of bottom taper bucket by the bottom.The 50mm place establishes overflow weir apart from the casing top, and the 500mm place sets out penstock, is used for the water outlet through periodic reaction in the SBR is entered the MBR reactor drum, and water-in is located at bottom half.
Stirrer is fixed on the top of casing, starts the mixing fully that guarantees muddy water at anaerobic stages.The MBR reaction box is processed by the welding of 0.9mm thickness 304 stainless steels; Dimensions is 1.2m * 0.8rm * 1.3m (L * W * H); Central bottom installs additional and is that highly the dividing plate of 0.6m, top install the high detachable dividing plate of 0.5m additional, are divided into 0.7m and two parts of 0.5m with reaction box.The former places the MBR membrane module, and the latter is as buffer strip, prevents that into the impact of water produces detrimentally affect to the MBR membrane module, and can be filled as the case may be or take different process.Both sides have the water shoot of DN500 respectively at the bottom of the reaction box, the blowdown when being used for carrying out spoil disposal or cleaning reaction case.
Main position according to the liquid level in the reactor drum sends a signal to PLC and carries out system's control, when liquid level is lower than liquid level in the sbr reactor device, can realize automatic water inlet, till reaching high liquid level; When being lower than the lowest safe waterline (diaphragm surfaces) of film or exceeding the highest safety level (overflow), system will be out of service.
Airing system is provided with film stripping and the two-way aerating system that supplies the SBR dissolved oxygen, and SBR aeration and film stripping are used two air pumps respectively, and the air feed form is respectively perforated pipe and micro-pore aeration.Boring aeration pipe places MBR water tank membrane module bottom; Reach the purpose that controlling diaphragm pollutes, the micro-pore aeration dish places sbr reactor device bottom, mainly supplies with the required dissolved oxygen of biochemical degradation process; External two SVs that caliber varies in size; Start in anoxic and aerobic stage respectively, the aeration rate of different sizes is provided, device all has gas meter to regulate aeration rate.
Middle water tank is a stainless steel, and (L * W * H) water discharging valve is arranged specification 1.0m * 0.5m * 0.3m at the bottom.Programmable logic controller (FX2N-32-MR001) control of the FX-2N series 32 point relaies output of Mitsubishi is adopted in system's operation.Adopt electro connecting pressure gauge read mould poor (Trans Membrane Pressure, TMP), range ability 0～0.100MPa.
The water recycling device membrane module is selected the MBR-8 type trilamellar membrane assembly that Zhejiang triumphant grand film ltd produces for use in this, and film is a tubular fibre external-compression type ultra-filtration membrane, and material is a Vestolen PP 7052, concrete parameter:
Adopt the single piece type method of attachment, two films are arranged side by side in water tank, and are hose connection to header, are provided with the water outlet that valve can be controlled each membrane module.The outward appearance and the size of membrane module are as shown in the figure.
The sbr reactor case is that right cylinder casing and support and the stirrer of taper formed the high 750mm of support, casing height overall 1100mm, diameter 600mm, the high 150mm of bottom taper bucket by the bottom.The 50mm place establishes overflow weir apart from the casing top, and the 500mm place sets out penstock, is used for the water outlet through periodic reaction in the SBR is entered the MBR reactor drum, and water-in is located at bottom half.Stirrer is fixed on the top of casing, starts the mixing fully that guarantees muddy water at anaerobic stages.
The MBR reaction box is processed by the welding of 0.9mm thickness 304 stainless steels; Dimensions is 1.2m * 0.8m * 1.3m (L * W * H); Central bottom installs additional and is that highly the dividing plate of 0.6m, top install the high detachable dividing plate of 0.5m additional, are divided into 0.7m and two parts of 0.5m with reaction box.The former places the MBR membrane module, and the latter is as buffer strip, prevents that into the impact of water produces detrimentally affect to the MBR membrane module, and can be filled as the case may be or take different process.Both sides have the water shoot of DN500 respectively at the bottom of the reaction box, the blowdown when being used for carrying out spoil disposal or cleaning reaction case.
Fluid level controller mainly sends a signal to PLC according to the position of the liquid level in the reactor drum and carries out system's control, when liquid level is lower than liquid level in the sbr reactor device, can realize automatic water inlet, till reaching high liquid level; When being lower than the lowest safe waterline (diaphragm surfaces) of film or exceeding the highest safety level (overflow), system will be out of service.
Airing system is provided with film stripping and the two-way aerating system that supplies the SBR dissolved oxygen, and SBR aeration and film stripping are used two air pumps respectively, and the air feed form is respectively perforated pipe and micro-pore aeration.Boring aeration pipe places MBR water tank membrane module bottom; Reach the purpose that controlling diaphragm pollutes, the micro-pore aeration dish places sbr reactor device bottom, mainly supplies with the required dissolved oxygen of biochemical degradation process; External two SVs that caliber varies in size; Start in anoxic and aerobic stage respectively, the aeration rate of different sizes is provided, device all has gas meter to regulate aeration rate.
Middle water tank is a stainless steel; (L * W * H) water discharging valve is arranged specification 1.0m * 0.5m * 0.3m at the bottom; Programmable logic controller (FX2N-32-MR001) control of the FX-2N series 32 point relaies output of Mitsubishi is adopted in system's operation; It is poor to adopt electro connecting pressure gauge to read mould, range ability 0～0.100MPa.
Hardware control system is made up of other accessories such as programmable logic controller, SV and motorized valve, fluid level controller, solid state relay, various switches.
(1) sbr reactor device cycle operation mode: reactor drum has two, and each cycle of operation is 4h, and liquid level control meter detects liquid level and is lower than when setting low liquid level in No. 1 reactor drum, and inlet valve, raw water pump and sludge reflux pump are opened; Reach when setting high liquid level and close automatically, stirrer starts simultaneously, closes behind the operation 90min; Control the valve opening of little aeration of anaerobic stages simultaneously, close and control the valve opening of complete aeration behind the 30min automatically, get into aerobic stage operation 120min; So far end cycle, outlet valve is opened, and reacted water gets into the MBR water tank, reduces to when water level and gets into next cycle, circular flow when setting low liquid level.
(2) No. 2 sbr reactor devices start: No. 1 reactor drum periodic duty half period is 2h, simultaneously during the complete aeration valve opening of little aeration valve closes, and No. 2 reactor start-ups, cycle of operation pattern and No. 1 are identical, timed interval half period (2h).
(3) water level control in the sbr reactor case: be lower than when setting Schwellenwert raw water pump and the water inlet of returned sluge pump operation when liquidometer detects liquid level; Suction pump is out of service; Reach when setting high-water, stop automatically, No. 1 stirrer is opened simultaneously.
(4) suction pump work: stop than setting the suction pump open and close quiescent interval according to required the taking out of reality.
(5) film cleans: when the electric contact vacuum meter detects pressure and rises to certain numerical value; Electric contact is connected the relevant PLC contact; Handle through programmable logic controller (PLC), send signal respectively and give two groups of valves, the A group is opened B group pass; Realize back flushing, and this moment, the ultrasonic generator non-stop run was cleaned.After cleaning the time of setting, A group pass B group is opened.Clean and finish, get into normal operation automatically,
The SBMBR system process: water intaking valve A1 opens, and the mixed solution that refluxes in former water after water pump lifting and the membrane reactor gets into sbr reactor device 1, and raw water pump stopped after liquid level was set in arrival, and A1 closes.Cycle starts, and stirs 90min, little aeration 30min, and aeration 120min realizes anaerobic/anoxic/aerobic alternative environment in the sbr reactor device fully, be 4h reaction time.Outlet valve C1 opens behind the end cycle, and the SBR water outlet gets into membrane reactor, and further degraded is thorough in membrane reactor, and the deposition and the bleeding stage of the crown_interception instead SBR technology of membrane module have been saved the sbr reactor cycle simultaneously.For shortening the period interval time of water outlet, guarantee the processing water yield of system, SBR pond 2 is set after the 1 operation half period of pond, starts, both operational conditionss are identical.
Start button (RUN) is pressed, and x0 connects, and A group electrical ball valve is closed B group electrical ball valve and opened; The startup time length that K300 sets A group, B group electrical ball valve is 30 seconds, and suction pump is opened film is produced the suction negative pressure after 30 seconds, moves and closes after 9 minutes; Stop 3 minutes, at this moment perform statement 32-54; Statement 56-62 is used for controlling the unlatching of No. 1 water tank water intake and No. 1 whisking appliance, and x2, x3 connect the low, high-order of No. 1 water tank floating ball lever meter respectively; Used 6 periods by statement 67-87 control No. 1 whisking appliance working time, the timer of per period 900s, and be 1.5 hours No. 1 whisking appliance working time; Statement 91-98 is used for controlling the little aeration process of water tank No. 1, and setting little aeration time is 0.5 hour.No. 1 water tank water intake finishes to control No. 2 water tank water intakes by statement 102 after 2 hours, stirs working time and little aeration time respectively by statement 149-169,173-184 control.Statement 109-137 is used to control the complete aeration time of No. 1 water tank, and setting complete aeration time is 2 hours; No. 1 water tank through 4 hours biochemical reaction after, by its gravity drainages of statement 141 control to the MBR water tank.No. 2 complete aerations of water tank are by statement 187-215 control, by statement 219 its water outlets of control.
Statement 222-270 is membrane module back flushing setting; X11 connects the electric contact vacuum meter; Reach the preheating setting pressure value when film aspirates negative pressure, and continue more than 20 seconds, A group electrical ball valve is closed B group electrical ball valve and is opened; Suction pump therefrom water tank is drawn water membrane module is carried out back flushing, and setting backwashing time is 3 minutes.Back flushing gets into normal operating condition, so repeatedly after finishing again.Program setting the system protection program be used to prevent that reasons such as element fault from causing loss.When water level is in low-water level in the MBR water tank, set suction pump and stop, preventing that the exposed membrane flux that causes of film from descending; For preventing overflowing of water in the MBR water tank, set when water level is positioned at high-water, system is out of service.
Claims (9)
1. water recycling device in the sequencing batch membrane bioreactor (SBMBR); It is characterized in that: water recycling device is by two identical sbr reactor water tanks in this; The membrane biological reaction case, middle water tank, five major portions of piping system and PLC automatic control system are formed.
2. water recycling device in the sequencing batch membrane bioreactor as claimed in claim 1 (SBMBR); It is characterized in that: adopt sequence batch (operating procedure method that former water biodegrade is reacted in the sbr reactor water tank; Remove organic pollutant and denitrogenation dephosphorizing; Place two membrane modules in the membrane biological reaction case, further biological degradation processing is also carried out water outlet; In water tank be used for the middle water of stores processor gained, and required water is provided for back flushing; Piping system comprises manually and equipment such as electrically operated valve, pump and under meter, is responsible for the aeration of water inlet, SBR water outlet, the suction water outlet of MBR film and whole process system; The normal operation of automatic control system major control total system device and stopping to comprise the PLC electrical control cubicles, electric contact vacuum pressure gauge, fluid level controller.
3. water recycling device in the sequencing batch membrane bioreactor as claimed in claim 2 (SBMBR), it is characterized in that: system's major equipment comprises: sbr reactor case, MBR reaction box, fluid level controller, aerating system, middle water tank, PLC, electro connecting pressure gauge.
4. water recycling device in the sequencing batch membrane bioreactor as claimed in claim 3 (SBMBR) is characterized in that: the sbr reactor case is that right cylinder casing and support and the stirrer of taper formed the high 750mm of support by the bottom; Casing height overall 1100mm, diameter 600mm, the high 150mm of bottom taper bucket; The 50mm place establishes overflow weir apart from the casing top; The 500mm place sets out penstock, is used for the water outlet through periodic reaction in the SBR is entered the MBR reactor drum, and water-in is located at bottom half; Stirrer is fixed on the top of casing, starts the mixing fully that guarantees muddy water at anaerobic stages; The MBR reaction box is processed by the welding of 0.9mm thickness 304 stainless steels, and dimensions is that (L * W * H), central bottom installs additional and highly is the dividing plate of 0.6m 1.2m * 0.8m * 1.3m; Top installs the high detachable dividing plate of 0.5m additional; Reaction box is divided into 0.7m and two parts of 0.5m, and the former places the MBR membrane module, and the latter is as buffer strip; Prevent that into the impact of water produces detrimentally affect to the MBR membrane module; And can be filled as the case may be or take different process, both sides have the water shoot of DN500 respectively at the bottom of the reaction box, the blowdown when being used for carrying out spoil disposal or cleaning reaction case.
5. water recycling device in the sequencing batch membrane bioreactor as claimed in claim 3 (SBMBR); It is characterized in that: fluid level controller mainly sends a signal to PLC according to the position of the liquid level in the reactor drum and carries out system's control; When liquid level is lower than liquid level in the sbr reactor device; Can realize automatic water inlet, till reaching high liquid level; When being lower than the lowest safe waterline of film or exceeding the highest safety level, system will be out of service, and middle water tank is a stainless steel; (L * W * H) water discharging valve is arranged specification 1.0m * 0.5m * 0.3m at the bottom, and programmable logic controller (FX2N-32-MR001) control of the FX-2N series 32 point relaies output of Mitsubishi is adopted in system's operation, adopts electro connecting pressure gauge to read; Range ability 0～-0.100Mpa, airing system is provided with film stripping and the two-way aerating system that supplies the SBR dissolved oxygen, and SBR aeration and film stripping are used two air pumps respectively; The air feed form is respectively perforated pipe and micro-pore aeration, and boring aeration pipe places MBR water tank membrane module bottom, reaches the purpose that controlling diaphragm pollutes; The micro-pore aeration dish places sbr reactor device bottom; The main required dissolved oxygen of biochemical degradation process of supplying with, external two SVs that caliber varies in size start in anoxic and aerobic stage respectively; The aeration rate of different sizes is provided, and device all has gas meter to regulate aeration rate.
6. water recycling device in the sequencing batch membrane bioreactor as claimed in claim 4 (SBMBR); It is characterized in that: the existing good film-forming properties of the mould material needs of MBR, thermostability, chemicalstability; Higher water flux and better pollution resistance ability are arranged again simultaneously, and unit expends low through fluid power, and the unit volume membrane area is big; Commonly used many with tubular type, tubular fibre formula and plate type membrane assembly, often select the film in 0.10～0.40 μ m aperture.
7. water recycling device in the sequencing batch membrane bioreactor as claimed in claim 1 (SBMBR), it is characterized in that: hardware control system is made up of other accessories such as programmable logic controller, SV and motorized valve, fluid level controller, solid state relay, various switches.
8. the system process of water recycling device in the sequencing batch membrane bioreactor as claimed in claim 1 (SBMBR) is characterized in that: water intaking valve is opened, and the mixed solution that refluxes in former water after water pump lifting and the membrane reactor gets into the sbr reactor device; Raw water pump stops after arriving the setting liquid level, and water intaking valve is closed, and the cycle starts; Stir 90min, little aeration 30min, aeration 120min fully; In the sbr reactor device, realize anaerobic/anoxic/aerobic alternative environment, be 4h reaction time., outlet valve is opened behind the end cycle, and the SBR water outlet gets into membrane reactor; Further degraded is thorough in membrane reactor, and the deposition and the bleeding stage of the crown_interception instead SBR technology of membrane module have been saved the sbr reactor cycle simultaneously; For shortening the period interval time of water outlet; The processing water yield of assurance system is provided with SBR pond 2 and after the 1 operation half period of pond, starts, and both operational conditionss are identical.
9. the system of water recycling device in the sequencing batch membrane bioreactor as claimed in claim 1 (SBMBR); It is characterized in that: system is provided with " automatically " and " manually " two kinds of operation scheme; Under " automatically " mode, can change equipment working state and high water tank parameter according to actual needs, the back flushing of film is the very effective measure that prevents that film from polluting in the system; After reaching the pressure that sets when the electric contact vacuum meter; System gets into the back flushing state automatically, is provided with MBR high water tank defence program, can prevent effectively that the exposed water that reaches of film from overflowing water tank.
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| CN201210029540.3A CN102531160B (en) | 2012-02-10 | 2012-02-10 | Reclaimed water recycling device for sequencing batch membrane bioreactor (SBMBR) |
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| CN201210029540.3A CN102531160B (en) | 2012-02-10 | 2012-02-10 | Reclaimed water recycling device for sequencing batch membrane bioreactor (SBMBR) |
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| CN102531160A true CN102531160A (en) | 2012-07-04 |
| CN102531160B CN102531160B (en) | 2014-06-25 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103073158A (en) * | 2013-01-25 | 2013-05-01 | 浙江商达环保有限公司 | Intelligent integrated treating equipment for rural sewage |
| CN103787555A (en) * | 2013-01-25 | 2014-05-14 | 浙江商达环保有限公司 | Intelligent rural sewage integrated treatment method |
| CN108911134A (en) * | 2018-07-17 | 2018-11-30 | 厦门理工学院 | A kind of processing method of sanitary sewage |
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| KR20010079050A (en) * | 2001-06-08 | 2001-08-22 | 김학로 | SBR omitted |
| CN201670779U (en) * | 2010-03-26 | 2010-12-15 | 北京工业大学 | Device for handling different periods of landfill leachate depth denitrification by two levels of UASB + A/O + SBR processes |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20010079050A (en) * | 2001-06-08 | 2001-08-22 | 김학로 | SBR omitted |
| CN201670779U (en) * | 2010-03-26 | 2010-12-15 | 北京工业大学 | Device for handling different periods of landfill leachate depth denitrification by two levels of UASB + A/O + SBR processes |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103073158A (en) * | 2013-01-25 | 2013-05-01 | 浙江商达环保有限公司 | Intelligent integrated treating equipment for rural sewage |
| CN103787555A (en) * | 2013-01-25 | 2014-05-14 | 浙江商达环保有限公司 | Intelligent rural sewage integrated treatment method |
| CN108911134A (en) * | 2018-07-17 | 2018-11-30 | 厦门理工学院 | A kind of processing method of sanitary sewage |
| CN108911134B (en) * | 2018-07-17 | 2021-06-11 | 厦门理工学院 | Domestic sewage treatment method |
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| CN102531160B (en) | 2014-06-25 |
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Inventor after: Lv Mou Inventor after: Liu Qinghua Inventor after: Li Hongwei Inventor after: Zhang Kunming Inventor before: Li Hongwei Inventor before: Liu Qinghua Inventor before: Zhang Kunming Inventor before: Lv Mou |
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