CN104150719A - Country comprehensive sewage treatment system and country comprehensive sewage treatment method - Google Patents
Country comprehensive sewage treatment system and country comprehensive sewage treatment method Download PDFInfo
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- CN104150719A CN104150719A CN201410429268.7A CN201410429268A CN104150719A CN 104150719 A CN104150719 A CN 104150719A CN 201410429268 A CN201410429268 A CN 201410429268A CN 104150719 A CN104150719 A CN 104150719A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
Abstract
A country comprehensive sewage treatment system and country comprehensive sewage treatment method belongs to the technical field of water treatment. The system includes, in a successively connected manner, a pre-treatment system for filtering suspended solids in water, a container-type integrated water treatment system, a soil infiltration system, a solar energy power supply system for supplying power to the container-type integrated water treatment system, and a process management system. The system and the method achieve dispersion and separation and integrated treatment of country comprehensive sewage, is convenient to operate and manage, is suitable for distribution characteristics of water quality and water amount of country household sewage and cultivation sewage, and overcome defects in country comprehensive sewage mixed treatment and household dispersed treatment in the prior art.
Description
Technical field
What the present invention relates to is a kind of device and method of water-treatment technology field, specifically a kind of rural comprehensive Sewage treatment systems and method that is applicable to water quality and quantity variation Rural areas greatly.
Background technology
In new countryside construction, the processing of domestic sewage in rural areas by using is a very stubborn problem always.Current national rural area produces approximately more than 80 hundred million tons of sanitary sewages every year, and 96% village does not have discharge conduit and Sewage treatment systems, and undressed sanitary sewage discharges wantonly.For a long time, domestic sewage in rural areas by using has become one of primary pollution source of current Rural Water body pollution and river,lake and reservior.
It is very ripe that sanitary sewage disposal says on Processes and apparatus.Causing the main reason of Sewage Pollution problem is the environment that this processing unit difficulty is applied to rural area.Village is set up sewage work and is had a lot of limitation, and as sparsely populated, stable not (separately building the new home), pipe network is laid costly, is difficult to generally set up concentrate sewage treatment facility etc.Adopt dispersed miniature waste disposal plant can solve these difficult problems.But existing waste disposal plant exists again following limitation: 1. energy consumption is larger, need supporting electric power facility; 2. complicated construction technique, long construction period; 3. efficiency is low, and the waste of generation is dirty so environment again easily; 4. maintenance cost is large etc.
Rural area, southwest peasant household sanitary sewage comprises peasant household's livestock breeding wastewater, peasant household the flush the toilet washing of excrement and urine water and kitchen and daily washing wastewater, and its composition estimation is as follows:
The main Shi Ge of traditional processing mode peasant household by these waste water unified or part collect and adopt marsh gas purifying to process or non-energy-dissipating type biological treatment, in linely after wastewater treatment enter environment or for irrigating.Facts have proved, although this processing mode has reduced country sewage to environment and ecological destruction of causing, only when draining water quality is less demanding, can select, after concentrated processing, country sewage discharge still can exist compared with overall situation risk.Meanwhile, the generation of each peasant household's sanitary sewage and the difference of per share sewage quality, the biogas production rate that causes mixing rear sewage is not high, and directly adopt non-energy-dissipating type biological treatment to cause treatment effect because concentration of wastewater is too high, is not fine.
Through the retrieval of prior art is found, Chinese patent literature CN103613252A open (bulletin) day 2014.03.05, a kind of photovoltaic organic waste-water treating apparatus and technique are disclosed, photovoltaic organic waste water is through grid water collecting basin, by water pump lifting to equalizing tank, promote and enter reaction tank again, by adding of agent system, add alkali simultaneously, flocculation agent and coagulant aids carry out coagulation-flocculation reaction, gravity flows into settling tank and removes after the suspended matter in waste water, enter the acidication that hydrolysis acidification pool carries out waste water, larger molecular organics matter is converted into the easy degradation material of small molecules, improve after BOD/COD, gravity flows into preaeration tank and carries out aerobic degradation, mixed solution flows into membrane reactor pond and carries out further degradation of organic substances, and the filtration in process membrane reactor pond, suction water outlet, water outlet qualified discharge.Mud mixed liquid in membrane reactor pond is back to hydrolysis acidification pool and preaeration tank according to a certain percentage.Mud in settling tank and part mud mixed liquid enter sludge sump, contain a large amount of silica flours and carborundum powder, recoverable or sale in the mud after dehydration.But what this technology adopted in aeration part is micro-pore aeration system, mostly microporous aeration device is to be outputed on the surface of aerating apparatus by laser countless fine and closely woven apertures, and high-pressure air sees through aperture and produces microbubble and be discharged into and in water body, form dissolved oxygen.The micro-pore of the easy obstruction of fine particle thing that such device is shut down in rear water causes systemic breakdown.
Chinese patent literature CN203530086U open (bulletin) day 2014.04.09, a kind of pastoral area solar integration sewage disposal device is disclosed, comprise photovoltaic cell, sump pump, sludge pump, blower fan, equalizing tank, anaerobic pond, anoxic pond, Aerobic Pond and membrane bioreactor, photovoltaic cell is respectively sump pump, sludge pump and blower fan power supply, equalizing tank is used for collecting pastoral area sewage, sump pump is placed in equalizing tank and for the sewage in equalizing tank is delivered in anaerobic pond, anaerobic pond, anoxic pond, Aerobic Pond is connected successively with membrane bioreactor, the water outlet of the integrated sewage disposal device of water outlet of membrane bioreactor, sludge pump is placed in membrane bioreactor and for the mud in membrane bioreactor is discharged or delivered in anoxic pond, blower fan provides aeration air by airduct for anoxic pond and Aerobic Pond.But energy is supplied with by photovoltaic cell in this technology, photovoltaic cell is respectively sump pump, sludge pump and blower fan power supply.Also just say that sun power is that the unique energy of operation and the required electric energy of Sewage treatment systems that pushes away this cover system is almost invariable, and the electric energy that sun the subject of knowledge and the object of knowledge can provide constantly changes and cuts in and out.This just causes equipment can only can move in the extremely limited time period every day, and most time can cannot start because of energy shortage.
Prior art adopts A/O+MBR membrane process to process domestic sewage in rural areas by using, and cost is high, safeguards inconvenience, takes up an area larger.The present invention adopts container-type integrated water treatment system and Efficiency for Soil Aquifer Treatment technique, and container-type system reduces floor space, is convenient to I&M; Efficiency for Soil Aquifer Treatment top layer can planting plants, does not take up an area, and cost is low, does not need professional to safeguard.
In traditional A/O technique, utilize the devices such as blast aeration to carry out aeration aerating, oxygen utilization rate is low, and aerobic reaction carries out insufficient.The present invention adopts strong magnetic helical cut microbubble equipment for increasing oxygen content of water, the features such as this device has compact construction, floor space is little, energy consumption is low, the high and low cavitation erosion of coefficient of oxygen utilization, nothing obstruction, effective degradation of organic substances and the carrying out that guarantees nitration reaction in A/O technique.
Existing Efficiency for Soil Aquifer Treatment is widely applied in rural area at present as a kind of Sewage treatment systems, but its nitrogen phosphorus removal efficiency is low, floor space large and hold the further popularization that susceptible to plugging shortcoming has hindered this system.The present invention is by having designed special processing layer structure in Efficiency for Soil Aquifer Treatment; In soil filtration pond, lay PVC perforated pipe and increased contacting of sewage and air, the oxygen therapy effect of enhancing atmosphere; In filter layer in advance implantation aerobic, the oxygen complex microorganism of holding concurrently; Sharpen under the adsorption of shell, slag etc. and the effect of composite flora in sea, and the pollutents such as the phosphoric acid salt in sewage, ammonia nitrogen are effectively removed.And wet well draining adopts liquidometer to control water level, thereby make the dry wet denitrification effect that improves system of allocating of Efficiency for Soil Aquifer Treatment, increased the clearance of ammonia nitrogen.
Summary of the invention
The present invention is directed to the drawback that prior art exists, a kind of rural comprehensive Sewage treatment systems and method are proposed, disperse sub-prime and centralized integrated to process domestic sewage in rural areas by using, operational management is convenient, be applicable to rural households' sewage and aquaculture wastewater water quality, the water yield and inhabitation characteristic distributions, overcome the deficiency of existing country sewage combination treatment and family's dispersion treatment.
The present invention is achieved by the following technical solutions:
The present invention relates to a kind of rural comprehensive Sewage treatment systems, comprising: the pretreatment system for filtered water suspended substance connecting successively, container-type integrated water treatment system, with the Efficiency for Soil Aquifer Treatment of wet well, solar electric power supply system and the process control system of electric energy are provided to container-type integrated water treatment system.
Described pretreatment system comprises: the grille well of making for removing the brick mix structure of macrobead suspended matter, this grille well can prevent the obstruction of lift pump, pipeline, valve, in order to avoid damage equipment.
Described solar electric power supply system comprises: solar battery array and the MPPT maximum power point tracking device, solar inverter, power dispenser and the civil power supplies that are attached thereto, wherein: for the solar battery array that absorbs solar radiation energy and be translated into electric energy, polylith solar cell plate serioparallel, consist of, MPPT maximum power point tracking device is controlled and made solar battery array provide firm power to export to solar inverter by disturbance; Solar inverter boosts the low dc voltage electric energy from solar battery array and converts simple alternating current electric energy to and export power dispenser to, power dispenser also receives in addition from MPPT maximum power point tracking device and calculates resulting current peak power data signal and determine current optimal pump quantity, and civil power supplies provides stand-by electric energy to container-type integrated water treatment system in the situation that cannot obtaining sun power.
Described disturbance is controlled and is referred to:
Supply current while i) gathering current solar battery array peak power output, as center electric current, first increases by 1% supply current, detects the output voltage of current solar battery array simultaneously; Again by after the current value that obtains and voltage multiply each other and generate current solar battery array output rating.Current solar battery array output rating is compared with maximum output rate merit, if current sun power output rating is greater than peak power output, show that sunlight strengthens, by current sun power output rating as current maximum power value, and repeat step I) until current solar battery array output rating is no longer greater than maximum output rate merit value, when maximum power value remains unchanged, perform step ii);
Ii) electric current corresponding to current maximum power value reduced 1% as supply current, detect the output voltage of current solar battery array simultaneously; Again by after the current value that obtains and voltage multiply each other and generate current solar battery array output rating.Current solar battery array output rating is compared with peak power output, if maximum output rate merit value is less than solar battery array output rating, show that sunlight weakens, current sun power output rating is preserved as large output rate merit data and repeats step I i) operation, and repeat step I i) operation until current solar battery array output rating is no longer less than maximum output rate merit value, when maximum power value remains unchanged, perform step i).
Described container-type integrated water treatment system, comprise: the equalizing tank for the regulating water quality water yield being connected in series successively, with anoxic filler with contain CBM (Complex Beneficial Microorganisms, plyability microbial preparation) anoxic pond, biological contact oxidation pond and settling tank, wherein: equalizing tank is connected with pretreatment system and by pretreated sewage regulating pondage, water quality, assurance equipment can normally move, can not dally because the water yield is large, also not because dally under the water yield, and sewage is homogenized, avoid high-concentration sewage to surpass treatment system load, the standard that causes effluent quality fluctuation can process the water yield according to system regulates, anoxic pond carries out by biological contact oxidation pond, carrying out aeration after degradation treatment to sewage, finally by being arranged at the output tube of settling tank top, export processing water to Efficiency for Soil Aquifer Treatment.
In described rural comprehensive Sewage treatment systems, be preferably provided with sewage treatment control system, this sewage treatment control system comprises: process controller, be arranged at lift pump and water monitors thereof that some in equalizing tank, anoxic pond, biological contact oxidation pond, settling tank and wet well utilize electric energy that sun the subject of knowledge and the object of knowledge produces to drive, wherein: water monitor exports the water level signal of corresponding installed position to process controller, process controller sends start and stop instruction to corresponding lift pump, water level in each processing unit is not terminated in overflow or too low.
The upper end of described biological contact oxidation pond is connected to realize mixed-liquor return with anoxic pond by reflux pump.
In described biological contact oxidation pond, be provided with contact filler, water-distributing device and aerating apparatus as microorganism carrier, wherein: the outlet of aerating apparatus is connected with the bottom of biological contact oxidation pond and exports and mix oxygen enrichment air water, contact filler is arranged at the body top, pond of biological contact oxidation pond, and water-distributing device is arranged at the bottom of biological contact oxidation pond.
Described aerating apparatus comprises: strong vortex formula superfine air bubble generation cavity, Wen Qiuli pipe, controller and the oxygen source with flow control valve and the self prime pump that are electrically connected to it respectively, wherein: the input terminus of Wen Qiuli pipe is connected with self prime pump with oxygen source respectively, the output terminal of Wen Qiuli pipe is connected with the water inlet of strong vortex formula superfine air bubble generation cavity.
The water outlet of described strong vortex formula superfine air bubble generation cavity is provided with the release head being connected with controller, and the intake pressure sensor of this strong vortex formula superfine air bubble generation cavity is connected with controller respectively with discharge pressure sensor; The control output line of controller is connected with the control output line of release head and the control output line of oxygen flow rate adjusting valve respectively and forms closed loop control loop.
The Efficiency for Soil Aquifer Treatment of described pit structure is arranged at the earth's surface lower than container-type integrated water treatment system, it from top to bottom comprises successively: top layer, water distribution layer, composite cementation filtering layer, bottom and impervious barrier, wherein: between top layer and water distribution layer, be respectively equipped with the water distributor and the header being connected with wet well for water distribution uniformity between bottom and impervious barrier, composite cementation filtering layer is to being provided with some ventpipes between earth's surface.
The treatment process that the present invention relates to said system, comprises the following steps:
First step 1, peasant household's fecal sewage enter septic tank, and sewage is through anaerobic digestion, and organism wherein obtains decomposed, has reduced pollutant load, have improved the content of available nutrient in sewage.
Step 2, the fecal sewage after septic tank are delivered to grille well with other composite wastewater through gravity pipe line, thick floating matter in grid interception sewage, and the water pump in protection later process pond is without prejudice.
Step 3, sewage enter equalizing tank by lift pump, and equalizing tank has the Effect of Pretreatment that larger molecular organics in sewage is degraded to small organic molecule, N, P removal, regulating pondage, and equalizing tank water outlet enters anoxic pond.
Step 4, sewage overflow to biological contact oxidation pond after anoxic pond reaction again, the in-built elastic filler of biological contact oxidation pond and aerating apparatus, and the organism major part in sewage is removed at this.Sewage overflow after oxidation pond is processed is to settling tank, and this settling tank is double does the distributing well effect of follow-up land percolation pond.
The treatment stage of step 5, settling tank water outlet penetration depth, i.e. Efficiency for Soil Aquifer Treatment, at this one-phase, sewage is further removed etc. ammonia nitrogen, phosphorus, organic pollutant through filtration, adsorption cleaning and the microorganism of five metafiltration material in pond, final qualified discharge.
Technique effect
Compared with prior art, the present invention is by the automatic adjusting of MPPT maximum power point tracking device and power dispenser, by the electric energy maximum using of solar battery array generation.Cannot obtain in the situation of sun power civil power supplies night or overcast and rainy etc. and provide electrical source of power for system, to guarantee the normal operation of equipment.The equipment of participating in sewage disposal in system directly comprises lift pump, reflux pump, aerating apparatus, middle water reuse irrigation energy supply.No matter the system forming at solar maximum power tracker and power dispenser, civil power supplies can realize the reliability service constantly that maximally utilises sun power and system with having or not a little less than solar energy intensively under controlling.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is embodiment application schematic diagram;
Fig. 3 is the local enlarged diagram of Fig. 2;
Fig. 4 is solar electric power supply system schematic diagram;
Fig. 5 is aerating apparatus schematic diagram;
Fig. 6 is strong vortex formula superfine air bubble generation cavity schematic diagram;
Fig. 7 is the local enlarged diagram of Fig. 6 head end;
Fig. 8 is Fig. 6 sectional view (A ?A face);
Fig. 9 is Efficiency for Soil Aquifer Treatment schematic diagram.
Embodiment
Below embodiments of the invention are elaborated, the present embodiment is implemented take technical solution of the present invention under prerequisite, provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Embodiment 1
As shown in Figure 1, this device comprises: the pretreatment system 1 connecting successively, container-type integrated water treatment system 2 and with the Efficiency for Soil Aquifer Treatment 3 of wet well 36 and the solar electric power supply system 4 that is arranged at container-type integrated water treatment system 2 outsides.
Described pretreatment system 1 comprises: the grille well 5 that brick mix structure is made, for removing macrobead suspended matter, prevents the obstruction of lift pump, pipeline, valve, in order to avoid damage equipment.
As shown in Figure 2, described solar electric power supply system 4 comprises: solar battery array 6 and the MPPT maximum power point tracking device, solar inverter 7, power dispenser and the civil power supplies 9 that are attached thereto, wherein: for the solar battery array 6 that absorbs solar energy and be translated into electric energy, 6 series-parallel connection of polylith solar battery array, consist of, solar inverter 7 boosts the low dc voltage electric energy from solar cell and converts simple alternating current electric energy to and export power dispenser to.
As shown in Figure 2, described container-type integrated water treatment system 2, comprise: the equalizing tank 17 for the regulating water quality water yield being connected in series successively, with anoxic filler 11 and the anoxic pond 37 that adds plyability microbial preparation, biological contact oxidation pond 38 and settling tank 39, wherein: equalizing tank 17 is connected with pretreatment system 1 and pretreated sewage is carried out to water quality and water yield adjusting, 37 pairs of sewage of anoxic pond carry out biological denitrification, remove COD simultaneously, after by biological contact oxidation pond 38, carry out aeration, finally by being arranged at the output tube of settling tank 39 tops, export processing water to Efficiency for Soil Aquifer Treatment 3.
As shown in Figure 3 and Figure 4, in the present embodiment system, be further provided with sewage treatment control system 13, this sewage treatment control system 13 comprises: process controller 14, be arranged at equalizing tank 17, anoxic pond 37, biological contact oxidation pond 38, some lift pump 15 and water monitors 16 thereof that utilize the electric energy driving of sun the subject of knowledge and the object of knowledge generation in settling tank 39 and wet well 36, wherein: water monitor 16 exports the water level signal of corresponding installed position to process controller 14, process controller 14 sends start and stop instruction to corresponding lift pump 15, water level in each processing unit is not terminated in overflow or too low.
The current solar maximum power data signal that the quantity of described lift pump 15 is recorded according to solar maximum power point tracker by power dispenser determines; In the situation that cannot obtaining the sun night or overcast and rainy etc., by civil power supplies 10, give and need the equipment such as water pump 15 that start that electric energy is provided, to maximally utilise the reliability service constantly of sun power and the system of assurance.
The upper end of described biological contact oxidation pond 38 is connected to realize mixed-liquor return by lift pump 15 with anoxic pond 37.
The reflux ratio of described mixed-liquor return is 100%～500%.
In described biological contact oxidation pond 38, be provided with biological contact filler 40, water distributor 41 and aerating apparatus 27 as microorganism carrier, wherein: the outlet of aerating apparatus 27 is connected with the bottom of biological contact oxidation pond and exports and mix oxygen enrichment air water, biological contact filler 40 is arranged at the body top, pond of biological contact oxidation pond, and water distributor 41 is arranged at the bottom of biological contact oxidation pond 38.
Described plyability microbial preparation is compound probiotic, specifically comprises commercially available nitrifier, denitrifying bacteria, milk-acid bacteria, yeast etc.
Described biological contact filler 40 adopts spandex fibers, wherein comprises the microbial film that microorganism forms, and sewage is flowed through filler and the microbial film that forms with microorganism contacts through oxygenation, and the active sludge acting in conjunction of microbial film and suspension, reaches the effect of purifying waste water.
The volumetric loading of this biological contact oxidation pond 38 is got 300gBOD5m
3/ d, effectively gets t=2h duration of contact, and gas-water ratio gets 15, and packing volume is 75% of biological contact oxidation pond 38 volumes.
As shown in Figure 5, described aerating apparatus 27 comprises: strong vortex formula superfine air bubble generation cavity 18, Venturi tube 19, controller 20 and the oxygen source 21 with flow control valve and the self prime pump 22 that are electrically connected to it respectively, wherein: the input terminus of Venturi tube 19 is connected with self prime pump 22 with oxygen source 21 respectively, the output terminal of Venturi tube 19 is connected with the water inlet of strong vortex formula superfine air bubble generation cavity 18.
As shown in Figure 6, the water outlet of described strong vortex formula superfine air bubble generation cavity 18 is provided with the release head being connected with controller 20, and the intake pressure sensor of this strong vortex formula superfine air bubble generation cavity 18 is connected with controller 20 respectively with discharge pressure sensor; The control output line of controller 20 is connected with the control output line of release head and the control output line of oxygen flow rate adjusting valve respectively and forms closed loop control loop.
Described strong vortex formula superfine air bubble generation cavity 18, comprise: tank body 23 and be set in turn in the strong vortex pipe 24 of its inside, strong magnetic screw-blade 25 and some to strong magnetic magnet steel group 26, wherein: strong vortex pipe 24 is positioned at the interior forward end of tank body 23, strong magnetic screw-blade 25 is positioned at the rear end, inside of tank body 23, and strong magnetic magnet steel group 26 is arranged at respectively in strong vortex pipe 24 and the outer rim of strong magnetic screw-blade 25.
As shown in Figure 7, the section of described strong vortex pipe 24 is rectangular configuration, and its integral body is vortex shape rhs-structure a, and described strong magnetic magnet steel group 26 is fixedly installed on inwall b top and the bottom of vortex shape rhs-structure a.
As shown in Figure 8, the strong magnetic magnet steel group 26 on described strong vortex pipe 24 is comprised of polylith N utmost point magnet steel group and S utmost point magnet steel group, and this Nd-Fe-B magnet steel is provided with some fixed orificess, by this fixed orifices, realizes and being fixedly connected with of vortex pipe 24 by force;
The outside surface of described Nd-Fe-B magnet steel is provided with epoxy resin layer c.
Described strong magnetic screw-blade 25 is for waiting continuous helical shape structure d of radius uniform pitch, and described strong magnetic magnet steel group 26 is fixedly installed on the outer rim of blade.
The two ends of described strong vortex pipe 24 are respectively equipped with water-in and water outlet, are respectively equipped with intake pressure sensor and discharge pressure sensor on entery and delivery port.
The data that described closed-loop control obtains by the collection of water-in and water-out pressure transmitter calculate optimum valve aperture, and the aperture of oxygen flow rate adjusting valve and controllable release head is regulated to control; Make the operating pressure of strong vortex formula superfine air bubble generation cavity 18 stable.
Described optimum valve aperture obtains in the following manner:
I, when intake pressure is during higher than negative 0.1 kilogram, valve opening remains on 50% and immobilizes;
Ii, when intake pressure sensor is equal to or less than negative 0.1 kilogram to the discharge pressure calculating of sampling, if discharge pressure lower than 0.4 kilogram of valve opening that just reduces release head,
Iii, be equal to or less than negative 0.1 kilogram and discharge pressure higher than 0.45 kilogram of valve opening that just increases release head when intake pressure sensor.
Described adjusting is controlled and is referred to:
I, when intake pressure is during higher than negative 0.1 kilogram, oxygen flow rate adjusting valve is closed;
II, be equal to or less than negative 0.1 kilogram when intake pressure sensor, the aperture of oxygen flow rate adjusting valve is by regulating with discharge pressure direct ratio.
As shown in Figure 9, the Efficiency for Soil Aquifer Treatment 3 of described pit structure is arranged at the earth's surface lower than container-type integrated water treatment system 2, it from top to bottom comprises successively: top layer 28, water distribution layer 29, composite cementation filtering layer 30a, 30b, bottom 31 and impervious barrier 32, wherein: between top layer 28 and water distribution layer 29, be respectively equipped with for the water distributor 33 of water distribution uniformity and the header 34 being connected with wet well between bottom 31 and impervious barrier 32, composite cementation filtering layer 30 is to being provided with some ventpipes 35 between earth's surface.
The thickness on described top layer 28 is 400mm, by normal soil, is mixed and forms with coarse sand 3:1, wherein: coarse sand can effectively improve the penetrating quality of system, reduces system jams.On top layer 28, plant the plants such as flower, grass and farm crop, realize sewage greenery patches and utilize.
The thickness 200mm of described water distribution layer 29, is comprised of melon seeds sheet.
The thickness of described composite cementation filtering layer 30a, 30b is 900mm, and its upper strata 30a is that 450mm uses by coarse sand and sea whetstone shell volume to form than 2:1; The 30b of lower floor be 450mm by coarse sand and slag by volume 1:1 form.
For improving the anoxic condition in Efficiency for Soil Aquifer Treatment 3, the present embodiment further realizes by ventpipe 35 oxygen increasing in Efficiency for Soil Aquifer Treatment 3, described ventpipe 35 is pvc pipe perforation structure, and pipeline upper end leads to surface air, and lower end passes to composite cementation filtering layer 30 middle parts.Increase contacting of sewage and air, strengthened the oxygen therapy effect of atmosphere, be beneficial to aerobic reaction.
In described composite cementation filtering layer 30 in advance implantation aerobic, the oxygen complex microorganism of holding concurrently.Sharpen under the adsorption of shell, slag etc. and the effect of composite flora in sea, and the pollutents such as the phosphoric acid salt in sewage, ammonia nitrogen are effectively removed, the Main Function layer that this composite cementation filtering layer 30 is sewage purifications.
The thickness of described bottom 31 is 300mm, the stone of different-grain diameter, consists of, and plays support composite cementation filtering layer 30 and makes the equally distributed effect of sewage.
Described impervious barrier 32 consists of anti-seepage geomembrane, and its effect is to prevent from oozing under sewage directly, makes gravel bed often in water saturation state, impels the capillary of moisture to rise.
The nitrogen phosphorus of above-mentioned Efficiency for Soil Aquifer Treatment 3 removes that ability is high, floor space is little, stable, can effectively solve rural area distributing waste water pollution problem.
As shown in Figure 2, in described wet well 36, be provided with a lift pump 15 and water monitor 16 thereof, wherein: described process controller 14 is measured well 36 elevation of water surface by water monitor 16 and controlled lift pump 15 start and stop to control the water level of wet well 36, thereby make the dry wet allotment of Efficiency for Soil Aquifer Treatment 3 improve the denitrification effect of system, when reducing water outlet elevation of water surface, reoxygenation can be carried out in Efficiency for Soil Aquifer Treatment 3 bottoms, is conducive to aerobic microbiological and carries out nitrification; When improving water outlet elevation of water surface, in Efficiency for Soil Aquifer Treatment 3, anaerobic zone increases, and is conducive to anaerobion and carries out denitrification.
The technique effect of this device comprises:
1) running cost is low: by solar electric power supply system 4, sun power is translated into electric energy maximum using, for whole system provides electrical source of power, comprises direct driving lift pump 15, aerating apparatus 27 and irrigate energy supply.Solar electric power supply system 4 can be realized MPPT maximum power point tracking according to illumination regulation output electric current in real time, maximally utilises sun power, at sunlight not enough or there is no the sun in the situation that civil power as the supplementary energy, provide part or all of electric energy for system.
2) aerating system in the Aerobic Pond in container-type integrated water treatment system 2, adopt strong magnetic helical cut microbubble equipment for increasing oxygen content of water, the features such as this device has compact construction, floor space is little, energy consumption is low, the high and low cavitation erosion of coefficient of oxygen utilization, nothing obstruction, be applicable to oxygenation field in water, can be used for substituting traditional dissolving, be applicable to sewage disposal, aquaculture.
3) by the special processing layer structure of design in Efficiency for Soil Aquifer Treatment 3; In soil filtration pond, lay PVC perforated pipe and increased contacting of sewage and air, the oxygen therapy effect of enhancing atmosphere; In composite cementation filtering layer 30 in advance implantation aerobic, the oxygen complex microorganism of holding concurrently; Sharpen under the adsorption of shell, slag etc. and the effect of composite flora in sea, and the pollutents such as the phosphoric acid salt in sewage, ammonia nitrogen are effectively removed.And wet well 36 drainings adopt liquidometer to control water level, thereby make the dry wet allotment of Efficiency for Soil Aquifer Treatment 3 improve the denitrification effect of system, when reducing water outlet elevation of water surface, reoxygenation can be carried out in Efficiency for Soil Aquifer Treatment 3 bottoms, is conducive to aerobic microbiological and carries out nitrification; When improving water outlet elevation of water surface, in Efficiency for Soil Aquifer Treatment 3, anaerobic zone increases, and is conducive to anaerobion and carries out denitrification.
4) in sanitary sewage disposal at present, use MBR film and process, this technology has strict regulation to the water quality and quantity of water, in rural area, the variable quantity of resident living water is larger, early, noon, evening be water use peak, all the other times are water ebb, the water yield per hour changes greatly.The shock resistance processing power of membrane technology is poor, and the sewage that surpasses film treater processing power overflows from equalizing tank 17.
5) in, water reuse is irrigated, owing to going out water suspension in container-type integrated water treatment system 2, remove, and in water, contain N, the element such as P, K, be the necessary nutriment of plant-growth, the water source and the fertilizer that utilize water outlet to irrigate as land for growing field crops, water reuse in realizing with Water Saving Irrigation Mode.
Claims (10)
1. a rural comprehensive Sewage treatment systems, it is characterized in that, comprise: the pretreatment system for filtered water suspended substance connecting successively, container-type integrated water treatment system, with the Efficiency for Soil Aquifer Treatment of wet well, solar electric power supply system and the process control system of electric energy are provided to container-type integrated water treatment system, wherein:
Described solar electric power supply system comprises: solar battery array and the MPPT maximum power point tracking device being attached thereto, solar inverter, power dispenser and civil power supplies, wherein: for the solar battery array that absorbs solar radiation energy and be translated into electric energy, by polylith solar cell plate serioparallel, formed, MPPT maximum power point tracking device is controlled and is made solar battery array provide firm power to export to solar inverter by disturbance, solar inverter boosts the low dc voltage electric energy from solar cell and converts simple alternating current electric energy to and export power dispenser to, power dispenser also receives in addition from MPPT maximum power point tracking device and calculates resulting current peak power data signal and determine current optimal pump quantity, civil power supplies provides stand-by electric energy to container-type integrated water treatment system in the situation that cannot obtaining sun power,
Described container-type integrated water treatment system, comprise: the equalizing tank for the regulating water quality water yield being connected in series successively, with anoxic filler with add anoxic pond, biological contact oxidation pond and the settling tank of plyability microbial preparation, wherein: equalizing tank is connected with pretreatment system and pretreated sewage is carried out to the adjusting of water quality and the water yield, anoxic pond carries out by biological contact oxidation pond, carrying out aeration after degradation treatment to sewage, finally by being arranged at the output tube of settling tank top, exports processing water to Efficiency for Soil Aquifer Treatment;
The Efficiency for Soil Aquifer Treatment of described pit structure is arranged at the earth's surface lower than container-type integrated water treatment system, it from top to bottom comprises successively: top layer, water distribution layer, composite cementation filtering layer, bottom and impervious barrier, wherein: between top layer and water distribution layer, be respectively equipped with the water distributor and the header being connected with wet well for water distribution uniformity between bottom and impervious barrier, composite cementation filtering layer is to being provided with some ventpipes between earth's surface.
2. rural comprehensive Sewage treatment systems according to claim 1, is characterized in that, described pretreatment system comprises: the grille well of making for removing the brick mix structure of macrobead suspended matter.
3. rural comprehensive Sewage treatment systems according to claim 1, is characterized in that, described disturbance is controlled and referred to:
Supply current while i) gathering current solar battery array peak power output, as center electric current, first increases by 1% supply current, detects the output voltage of current solar battery array simultaneously; Again by after the current value that obtains and voltage multiply each other and generate current solar battery array output rating; Current solar battery array output rating is compared with maximum output rate merit, if current sun power output rating is greater than peak power output, show that sunlight strengthens, by current sun power output rating as current maximum power value, and repeat step I) until current solar battery array output rating is no longer greater than maximum output rate merit value, when maximum power value remains unchanged, perform step ii);
Ii) electric current corresponding to current maximum power value reduced 1% as supply current, detect the output voltage of current solar battery array simultaneously; Again by after the current value that obtains and voltage multiply each other and generate current solar battery array output rating; Current solar battery array output rating is compared with peak power output, if maximum output rate merit value is less than solar battery array output rating, show that sunlight weakens, using current sun power output rating as large output rate merit data, preserve and repeat step I i) operation, and repeat step I i) operation until current solar battery array output rating is no longer less than maximum output rate merit value, when maximum power value remains unchanged, perform step i).
4. rural comprehensive Sewage treatment systems according to claim 1, it is characterized in that, also comprise sewage treatment control system, this sewage treatment control system comprises: process controller, be arranged at equalizing tank, anoxic pond, biological contact oxidation pond, some lift pump and water monitors thereof that utilize the electric energy driving of sun the subject of knowledge and the object of knowledge generation in settling tank and wet well, wherein: water monitor exports the water level signal of corresponding installed position to process controller, process controller sends start and stop instruction to corresponding lift pump, water level in each processing unit is not terminated in overflow or too low.
5. rural comprehensive Sewage treatment systems according to claim 1, it is characterized in that, in described biological contact oxidation pond, be provided with contact filler, water-distributing device and aerating apparatus as microorganism carrier, wherein: the outlet of aerating apparatus is connected with the bottom of biological contact oxidation pond and exports and mix oxygen enrichment air water, contact filler is arranged at the body top, pond of biological contact oxidation pond, and water-distributing device is arranged at the bottom of biological contact oxidation pond.
6. rural comprehensive Sewage treatment systems according to claim 1, it is characterized in that, described aerating apparatus comprises: strong vortex formula superfine air bubble generation cavity, Wen Qiuli pipe, controller and the oxygen source with flow control valve and the self prime pump that are electrically connected to it respectively, wherein: the input terminus of Wen Qiuli pipe is connected with self prime pump with oxygen source respectively, the output terminal of Wen Qiuli pipe is connected with the water inlet of strong vortex formula superfine air bubble generation cavity.
7. rural comprehensive Sewage treatment systems according to claim 6, it is characterized in that, the water outlet of described strong vortex formula superfine air bubble generation cavity is provided with the release head being connected with controller, and the intake pressure sensor of this strong vortex formula superfine air bubble generation cavity is connected with controller respectively with discharge pressure sensor; The control output line of controller is connected with the control output line of release head and the control output line of oxygen flow rate adjusting valve respectively and forms closed loop control loop.
8. according to the rural comprehensive Sewage treatment systems described in claim 6 or 7, it is characterized in that, described strong vortex formula superfine air bubble generation cavity, comprise: tank body and the strong vortex pipe, the screw-blade and some to strong magnetic magnet steel group, wherein that are arranged at its inside: the inwall of tank body is close to the outermost layer outer wall of strong vortex pipe and the outer rim of screw-blade;
Described strong vortex pipe is vortex shape rhs-structure, and described strong magnetic magnet steel group is fixedly installed on rhs-structure;
Strong magnetic magnet steel on described strong vortex pipe is with fixed orifices, and is riveted together by fixed orifices and vortex tube wall, then fixes with epoxy resin sealing;
Described screw-blade is for waiting continuous helical shape structure of radius uniform pitch, and described strong magnetic magnet steel group is fixedly installed on the outer rim of blade;
The two ends of described strong vortex pipe are respectively equipped with water-in and water outlet, are respectively equipped with intake pressure sensor and discharge pressure sensor on entery and delivery port.
9. rural comprehensive Sewage treatment systems according to claim 1, is characterized in that, the thickness on described top layer is 400mm, by normal soil, is mixed and forms with coarse sand 3:1;
The thickness 200mm of described water distribution layer, is comprised of melon seeds sheet;
The thickness of described composite cementation filtering layer is 900mm, and its upper strata is that 6450cm uses by coarse sand and sea whetstone shell volume to form than 2:1; Lower floor be 7450cm by coarse sand and slag by volume 1:1 form;
Described ventpipe is pvc pipe perforation structure, and pipeline upper end leads to surface air, and lower end passes to composite cementation filtering layer middle part;
The thickness of described bottom is 300mm, the stone of different-grain diameter, consists of, and plays support filter layer and makes the equally distributed effect of sewage;
Described impervious barrier consists of anti-seepage geomembrane.
10. according to a sewage water treatment method for system described in above-mentioned arbitrary claim, it is characterized in that, comprise the following steps:
First step 1, peasant household's fecal sewage enter septic tank, and sewage is through anaerobic digestion, and organism wherein obtains decomposed, has reduced pollutant load, have improved the content of available nutrient in sewage;
Step 2, the fecal sewage after septic tank are delivered to grille well with other composite wastewater through gravity pipe line, thick floating matter in grid interception sewage, and the water pump in protection later process pond is without prejudice;
Step 3, sewage are promoted and are entered equalizing tank by solar electric power supply system, and equalizing tank has the Effect of Pretreatment that larger molecular organics in sewage is degraded to small organic molecule, N, P removal, regulating pondage, and equalizing tank water outlet enters anoxic pond;
Step 4, sewage overflow to biological contact oxidation pond after anoxic pond reaction again, the in-built elastic filler of biological contact oxidation pond and aerating apparatus, and the organism major part in sewage is removed at this; Sewage overflow after oxidation pond is processed is to settling tank, and this settling tank is double does the distributing well effect of follow-up land percolation pond;
The treatment stage of step 5, settling tank water outlet penetration depth, i.e. Efficiency for Soil Aquifer Treatment, at this one-phase, sewage is further removed etc. ammonia nitrogen, phosphorus, organic pollutant through filtration, adsorption cleaning and the microorganism of five metafiltration material in pond, final qualified discharge.
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| CN111646639A (en) * | 2020-05-25 | 2020-09-11 | 广东维清环境工程有限公司 | Breeding wastewater treatment process of pre-oxygenation-two-stage anaerobic membrane bioreactor |
| CN111661980A (en) * | 2020-06-09 | 2020-09-15 | 哈尔滨锅炉厂有限责任公司 | Method for treating domestic sewage in cold region and rural area by using solar energy-purification tank |
| CN113213618A (en) * | 2021-03-09 | 2021-08-06 | 中国环境科学研究院 | Tail end treatment system and method for purifying urban non-point source organic pollution |
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