A kind of compound town domestic sewage set treatment device
Technical field
The invention belongs to sewage treatment area, be specifically related to a kind of compound town domestic sewage set treatment device.
Background technology
Along with the development of urbanization, urban population gets more and more, and the sanitary sewage that urban population produces also gets more and more.Do not have treated sanitary sewage to discharge arbitrarily, can pollute physical environment.Current water body natural purification function cannot recover polluted water, needs to process before discharging sanitary sewage.Urban wastewater treatment has: the little 100 ~ 2000m3/d for the treatment of scale; Transport, hoisting difficulty is large; Process points is disperseed, and it is difficult to collect, and pipe network investment is high; The features such as management of water adjustment.
In sewage disposal common at present, part adopts coagulation, and only can remove inorganic solid particle and suspended substance, the sanitary sewage after process can not reach emission standard.The application of membrane bioreactor (MBR) in process town domestic sewage, more and more obtains the attention of people.Existing membrane bioreactor (MBR) mostly is aerobic, and for ensureing the effective flushing to film, gas-water ratio reaches (15 ~ 20:1), and aeration rate is large, and energy consumption is high, to NH_3-N treating weak effect, needs by spoil disposal dephosphorization.When meeting large gas-water ratio, the dissolving in sewage is high, causes membrane bioreactor to be in aerobic state.The good sample bacterium cenobium adhesive capacity that aerobic activated sludge is formed is large, and concentration is large, and strong to the adsorptive power of film silk, fouling membrane is large.It is gas, water shearing flushing that film rinses usual way, and single online immersion medicine is washed.These traditional purging methods, all can not effectively go deep into settled layer inside, cause cleaning not thorough.
Summary of the invention
The compound town domestic sewage set treatment device of the one that the object of the present invention is to provide, effectively can reduce the souring that aeration is formed, compound town domestic sewage set treatment device of the present invention simultaneously, membrane module process anaerobic reaction environment, can improve the treatment effect of membrane module.
The present invention realizes like this, a kind of compound town domestic sewage set treatment device, pretreater water outlet is connected with anaerobic reactor water inlet by the first rising pipe, anaerobic reactor water outlet is connected with aerobic reactor water inlet by the second rising pipe, aerobic reactor water outlet is connected with membrane reactor water inlet by the 3rd rising pipe, sewage after membrane reactor delivery port output processing, the housing of membrane reactor divides film formation reaction district and reuse pool by division plate, 3rd rising pipe water outlet is arranged at bottom film reaction district, aerobic reactor top gas is connected by the first pneumatic tube after gas accelerator, aeration head on first pneumatic tube is arranged at bottom film reaction district, first air valve one end is connected with gas blower air outlet by the 5th pneumatic tube, and the other end is connected with the gas inlet of aerobic reactor by the second pneumatic tube, second air valve one end is connected with gas blower air outlet by the 5th pneumatic tube, and the other end is connected with membrane reactor by the 4th pneumatic tube, and the aeration head that the 4th pneumatic tube is arranged downwards is positioned at bottom film reaction district, 3rd air valve one end is connected with gas blower air outlet by the 5th pneumatic tube, and the other end is connected with membrane reactor by the 3rd pneumatic tube, and the aeration head that the 3rd pneumatic tube is upwards arranged is positioned at bottom film reaction district, film reaction arranges membrane module in district, membrane module water outlet is connected with the 4th rising pipe, the 4th rising pipe the other end is connected with the first recoil valve and the second recoil valve simultaneously, working barrel water side is connected with the first recoil valve and the 3rd recoil valve simultaneously, working barrel water intake end is connected with the second recoil valve and the 4th recoil valve simultaneously, 3rd recoil valve connects medicated module by the 5th rising pipe, and the 4th recoil valve connects reuse pool by the 6th rising pipe, top, film reaction district arranges physics denitrogenation dephosphorizing district, and physics denitrogenation dephosphorizing district passed through the mouth of a river and is connected with reuse pool, and physics denitrogenation dephosphorizing arranges medicated module in district, and medicated module arranges alkaline dosing district, acid dosing district, oxygenant dosing district, alkalescence dosing district connects the 4th rising pipe by alkaline agent valve, and acid dosing district connects the 4th rising pipe by sour agent valve, and oxygenant dosing district connects the 4th rising pipe by oxidizer valve, top, film reaction district is connected with pretreating zone by sludge pipe, arranges mud mouth and be connected with sludge pipe by the first sludge valve below reuse pool, arranges mud mouth and be connected with sludge pipe by the second sludge valve below film reaction district.
For improving the level of automation of compound town domestic sewage set treatment device of the present invention, in membrane reactor, also controller is set, membrane reactor arranges ultrasonic generator and is connected with controller signals, membrane reactor arranges dissolved oxygen analytic instrument and is connected with controller signals, and gas blower is connected with controller signals.
Discharge for convenience of the mud in compound town domestic sewage set treatment device, be connected bottom aerobic reactor by the first shore pipe with sludge pipe, suspended substance relief outlet is connected with sludge pipe by the second shore pipe.
For increasing the processing power of compound town domestic sewage set treatment device, the membrane module in membrane reactor arranges 1-5 part, and all membrane module water outlets are connected with the 4th rising pipe.
Technique effect of the present invention:
Compound town domestic sewage set treatment device of the present invention, the device beyond pretreating zone all adopts integrated skid mounted equipment, and anaerobic reactor and aerobic reactor and membrane reactor can be chosen according to process and concentrate or be dispersed into sled, convenient transport and installing.
Compound town domestic sewage set treatment device of the present invention, membrane module reacts under anaerobic environment, can significantly reduce surplus sludge volume.In anaerobic treatment process, the harmful organisms such as the parasitic ovum in sewage and mud can be killed, the material that degradable aerobic treatment cannot be degraded.Meanwhile, by anaerobic reaction, membrane module can be slowed down and pollute, reduce energy consumption, reduce sludge quantity and sludge concentration, change the conventional apparatus of spoil disposal dephosphorization, improve membrane module applied environment.
Anaerobic reactor adopts modified form upflow anaerobic sludge blanket process structure, can macromole and Refractory organic compounds in degradation of sewage fast.Waste disposal plant of the present invention, anaerobic reactor adopts modified form triphase separator, strengthening mud, moisture flow, by inorganic mud and decomposition macromole organic sludge interception completely, further decomposition, finally can not decompose inorganics and be back to pretreating zone, reduces membrane module blocking.Aerobic reactor top is provided with suspension collecting device, and the foam that can produce air supporting in aeration, suspended substance are collected, and be regularly back to the differential flow type homogeneous pond of pretreating zone by design requirements.
Accompanying drawing explanation
Fig. 1 is invention system figure.
Fig. 2 is membrane reactor structural representation.
Fig. 3 is aerobic reactor structural representation.
Fig. 4 is anaerobic reactor structural representation.
Reference numeral: 1-sewage inlet, 2-pretreater, 301-first rising pipe, 302-second rising pipe, 4-membrane reactor, 401-membrane module, 402-controller, 403-ultrasonic generator, 404-dissolved oxygen analytic instrument, 405-alkalescence dosing district, the acid dosing district of 406-, 407-oxygenant dosing district, 408-physics denitrogenation dephosphorizing district, 409-oxidizer valve, 410-acid agent valve, 411-alkaline agent valve, 412-the 6th rising pipe, 501-second shore pipe, 502-sludge pipe, 503-first shore pipe, 6-aerobic reactor, 701-first recoil valve, 702-the 3rd recoil valve, 703-second recoil valve, 704-the 4th recoil valve, 705-first sludge valve, 706-second sludge valve, 801-second pneumatic tube, 802-the 3rd rising pipe, 803-first pneumatic tube, 804-the 4th pneumatic tube, 805-the 3rd pneumatic tube, 806-the 4th rising pipe, 807-the 5th rising pipe, 808-crosses the mouth of a river, 901-first air valve, 902-second air valve, 903-the 3rd air valve, 10-gas accelerator, 11-the 5th pneumatic tube, 12-anaerobic reactor, 13-working barrel, 14-delivery port, 15-gas blower, 16-housing, 17-division plate, 18-reuse pool, 19-film reaction district.
Embodiment
Composition graphs 1 is to Fig. 4, a kind of compound town domestic sewage set treatment device, pretreater 2 water outlet is connected with anaerobic reactor 12 water inlet by the first rising pipe 301, anaerobic reactor 12 water outlet is connected with aerobic reactor 6 water inlet by the second rising pipe 302, aerobic reactor 6 water outlet is connected with membrane reactor 4 water inlet by the 3rd rising pipe 802, membrane reactor 4 delivery port 14 obtains the sewage after processing, the housing 16 of membrane reactor 4 is by division plate 17 points of film formation reaction districts 19 and reuse pool 18, 3rd rising pipe 802 water outlet is arranged at bottom film reaction district 19, aerobic reactor 6 top gas is connected by the first pneumatic tube 803 after gas accelerator 10, aeration head on first pneumatic tube 803 is arranged at bottom film reaction district 19, first air valve 901 one end is connected with gas blower 15 air outlet by the 5th pneumatic tube 11, and the other end is connected with the gas inlet of aerobic reactor 6 by the second pneumatic tube 801, second air valve 902 one end is connected with gas blower 15 air outlet by the 5th pneumatic tube 11, and the other end is connected with membrane reactor 4 by the 4th pneumatic tube 804, and the aeration head that the 4th pneumatic tube 804 is arranged downwards is positioned at bottom film reaction district 19, 3rd air valve 903 one end is connected with gas blower 15 air outlet by the 5th pneumatic tube 804, and the other end is connected with membrane reactor 4 by the 3rd pneumatic tube 805, and the aeration head that the 3rd pneumatic tube 805 is upwards arranged is positioned at bottom film reaction district 19, membrane module 401 is set in film reaction district 19, membrane module 401 water outlet is connected with the 4th rising pipe 806,4th rising pipe 806 the other end is connected with the first recoil valve 701 and the second recoil valve 703 simultaneously, working barrel 13 water side is connected with the first recoil valve 701 and the 3rd recoil valve 702 simultaneously, working barrel 13 water intake end is connected with the second recoil valve 703 and the 4th recoil valve 704 simultaneously, 3rd recoil valve 702 connects medicated module by the 5th rising pipe 807, and the 4th recoil valve 704 connects reuse pool 18 by the 6th rising pipe 412, top, film reaction district 19 arranges physics denitrogenation dephosphorizing district 408, physics denitrogenation dephosphorizing district 408 passed through the mouth of a river 808 and was connected with reuse pool 18, arranged medicated module in physics denitrogenation dephosphorizing district 408, and medicated module arranges alkaline dosing district 405, acid dosing district 406, oxygenant dosing district 407, alkalescence dosing district 405 connects the 4th rising pipe 806 by alkaline agent valve 411, and acid dosing district 406 connects the 4th rising pipe 806 by sour agent valve 410, and oxygenant dosing district 407 connects the 4th rising pipe 806 by oxidizer valve 409, top, film reaction district 19 is connected with pretreating zone by sludge pipe 502, arranges mud mouth and is connected with sludge pipe 502 by the first sludge valve 705, arrange mud mouth and be connected with sludge pipe 502 by the second sludge valve 706 below film reaction district 19 below reuse pool 18.
For improving the level of automation of compound town domestic sewage set treatment device of the present invention, in membrane reactor 4, controller 402 is also set, membrane reactor 4 arranges ultrasonic generator 403 and is connected with controller 402 signal, membrane reactor 4 arranges dissolved oxygen analytic instrument 404 and is connected with controller 402 signal, and gas blower 15 is connected with controller 402 signal.
Discharge for convenience of the mud in compound town domestic sewage set treatment device, be connected with sludge pipe 502 by the first shore pipe 503 bottom aerobic reactor 6, suspended substance relief outlet is connected with sludge pipe 502 by the second shore pipe 501.
For increasing the processing power of compound town domestic sewage set treatment device, the membrane module 401 in membrane reactor 4 arranges-part, and all membrane module 401 water outlets are connected with the 4th rising pipe 806.
When work, pending sanitary sewage inputs from sewage inlet 1, by pretreater 2, cross the floating matter filtered in sewage, by the silt etc. in settling bowl sedimentation sewage, be input to anaerobic reactor 12 water inlet through the first rising pipe 301, sewage is by after anaerobic reaction in anaerobic reactor 12, export from anaerobic reactor 12 water outlet, input aerobic reactor 6 water inlet by the second rising pipe 302.Gas blower 15 delivery air leads to the 5th pneumatic tube, is connected after the first air valve 901 with the gas inlet of aerobic reactor 6; Sewage reacts in aerobic reactor 6 inside, after gas accelerator 10, input membrane reactor 4 by aerobic reactor 6 top by the air after reaction is consumed oxygen by the first pneumatic tube 803, gas accelerator 10 shears as the water to membrane module 401, gas the power rinsed.Through the reacted sewage of aerobic reactor 6, be transported to membrane reactor 4 through the 3rd rising pipe 802; Suspended substance in aerobic reactor 6 is after suspension collecting device is collected, and be discharged to sludge pipe 502 through the second shore pipe 501, aerobic reactor 6 bottom precipitation is discharged to sludge pipe 502 by the first shore pipe 503.Sewage after aerobic reactor 6 processes, entered bottom the film reaction district 19 in membrane reactor 4 by the 3rd rising pipe 802, first pneumatic tube 803 inputs, and the air through aerobic reactor 6 oxygen depleted carries out aeration by the aeration head be connected on the first pneumatic tube 803.It is inner that sewage enters into membrane module 401, membrane module 401 water outlet is connected with the 4th rising pipe 806, close the first recoil valve 701 and the 4th recoil valve 704, open the 3rd recoil valve 702 and the second recoil valve 703, when working barrel 13 works, the water after process from the 4th rising pipe 806 pump to the 5th rising pipe 807, the water pumped enters into reuse pool 18 from crossing the mouth of a river 808 behind physics denitrogenation dephosphorizing district 408, natural Buddhist stone is deposited in physics denitrogenation dephosphorizing district 408, the nitrogen phosphorus in planar water.The water of reuse pool 18 after delivery port 14 output processing.After using for some time, membrane module 401 may block, close the 3rd recoil valve 702 and the second recoil valve 703, open the first recoil valve 701 and the 4th recoil valve 704, when working barrel 13 works, water is recoiled to membrane module 401 inside from reuse pool 18 pump by the 6th rising pipe 412.
Open the second air valve 902, gas blower 15 delivery air is by the 5th pneumatic tube, and the aeration head arranged downwards on the second pneumatic tube 801, to aeration bottom film reaction district 19, prevents the sludgd deposition of high density bottom film reaction district 19.Open the 3rd air valve 903, gas blower 15 delivery air is by the 5th pneumatic tube, and the aeration head arranged on the 3rd pneumatic tube 805 is to aeration bottom film reaction district 19.Control the aperture of the second air valve 902 and the 3rd air valve 903, the aeration head air output on the first pneumatic tube 803 occupies the majority, and makes film reaction district 19 process anaerobic state.
When membrane module 401 blocks, membrane module 401 water permeable ability in film reaction district 19 weakens, and the water in film reaction district 19 is back to pretreating zone by sludge pipe 502; Open the second sludge valve 706, the mud of bottom, film reaction district 19 is back to pretreating zone by sludge pipe 502; Open the first sludge valve 705, the mud of bottom, reuse pool 18 is back to pretreating zone by sludge pipe 502.
Arrange dissolved oxygen analytic instrument 404 in film reaction district 19, for detecting the oxygen level in anaerobic reaction district, controller 402 controls the aperture of the second air valve 902 and the 3rd air valve 903, makes film reaction district 19 process anaerobic state.Ultrasonic generator 403 is set in film reaction district 19, at closedown the 3rd recoil valve 702 and the second recoil valve 703, open the first recoil valve 701 and the 4th recoil valve 704, when water being recoiled from reuse pool 18 pump to membrane module 401 inside when working barrel 13 works, controller 402 starts ultrasonic generator 403, accelerates the speed that recoils.
When membrane module 401 blocks serious, carry out the comprehensive cleaning model of drug immersion manually or automatically, open alkaline agent valve 411, it is inner that the alkaline drug joined in alkaline dosing district 405 enters membrane module 401 by alkaline agent valve 411; Open sour agent valve 410, it is inner that the acidic drug joined in acid dosing 406 district enters into membrane module 401 by sour agent valve 410; Open oxidizer valve 409, it is inner that the oxidant drug joined in oxygenant dosing district 407 enters into membrane module 401 by oxidizer valve 409; Open ultrasonic generator 403 simultaneously, increase cleaning performance.
Compound town domestic sewage set treatment device floor space of the present invention is little, and initial cost is few, and automation degree of equipment is high, installation, convenient management.Anaerobic reactor and aerobic reactor and membrane reactor can be chosen according to process and concentrate or be dispersed into sled, convenient transport and installing, and are more suitable for small towns, district environment for use.The town domestic sewage of compound town domestic sewage set treatment device of the present invention process can reach GB/T18920-2002 urban reclaimed water water quality standard.