CN105366891A - Treatment method of livestock culture wastewater - Google Patents
Treatment method of livestock culture wastewater Download PDFInfo
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- CN105366891A CN105366891A CN201510889351.7A CN201510889351A CN105366891A CN 105366891 A CN105366891 A CN 105366891A CN 201510889351 A CN201510889351 A CN 201510889351A CN 105366891 A CN105366891 A CN 105366891A
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- 239000002351 wastewater Substances 0.000 title claims abstract description 72
- 238000000034 method Methods 0.000 title claims abstract description 28
- 244000144972 livestock Species 0.000 title claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 78
- 239000004576 sand Substances 0.000 claims abstract description 30
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 17
- 238000004062 sedimentation Methods 0.000 claims abstract description 12
- 238000005273 aeration Methods 0.000 claims abstract description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 9
- 239000001301 oxygen Substances 0.000 claims abstract description 9
- 239000010802 sludge Substances 0.000 claims abstract description 7
- 230000010355 oscillation Effects 0.000 claims abstract description 4
- 238000000746 purification Methods 0.000 claims abstract description 4
- 238000001179 sorption measurement Methods 0.000 claims description 19
- 238000009792 diffusion process Methods 0.000 claims description 18
- 238000009395 breeding Methods 0.000 claims description 14
- 230000001488 breeding effect Effects 0.000 claims description 14
- 239000000126 substance Substances 0.000 claims description 14
- 230000008569 process Effects 0.000 claims description 13
- 230000001954 sterilising effect Effects 0.000 claims description 12
- 230000000694 effects Effects 0.000 claims description 9
- 241000894006 Bacteria Species 0.000 claims description 7
- 230000008014 freezing Effects 0.000 claims description 7
- 238000007710 freezing Methods 0.000 claims description 7
- 229910001220 stainless steel Inorganic materials 0.000 claims description 7
- 239000010935 stainless steel Substances 0.000 claims description 7
- 150000001875 compounds Chemical class 0.000 claims description 6
- 230000005684 electric field Effects 0.000 claims description 6
- 239000003822 epoxy resin Substances 0.000 claims description 6
- 238000011010 flushing procedure Methods 0.000 claims description 6
- 239000003292 glue Substances 0.000 claims description 6
- 229920000647 polyepoxide Polymers 0.000 claims description 6
- 230000006855 networking Effects 0.000 claims description 5
- 239000010865 sewage Substances 0.000 claims description 5
- 230000015556 catabolic process Effects 0.000 claims description 4
- 238000006731 degradation reaction Methods 0.000 claims description 4
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 230000009471 action Effects 0.000 claims description 3
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims description 3
- 238000011049 filling Methods 0.000 claims description 3
- 239000000706 filtrate Substances 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 230000000813 microbial effect Effects 0.000 claims description 3
- 230000007935 neutral effect Effects 0.000 claims description 3
- 239000005416 organic matter Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 239000002244 precipitate Substances 0.000 claims description 3
- 238000005057 refrigeration Methods 0.000 claims description 3
- 239000006228 supernatant Substances 0.000 claims description 3
- 230000001678 irradiating effect Effects 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 230000000737 periodic effect Effects 0.000 claims description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 2
- 238000004064 recycling Methods 0.000 abstract description 2
- 239000007787 solid Substances 0.000 abstract description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 230000031018 biological processes and functions Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000008399 tap water Substances 0.000 description 2
- 235000020679 tap water Nutrition 0.000 description 2
- YUWBVKYVJWNVLE-UHFFFAOYSA-N [N].[P] Chemical compound [N].[P] YUWBVKYVJWNVLE-UHFFFAOYSA-N 0.000 description 1
- 238000011001 backwashing Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 210000003746 feather Anatomy 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 239000010808 liquid waste Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000008239 natural water Substances 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000026676 system process Effects 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/22—Treatment of water, waste water, or sewage by freezing
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/285—Treatment of water, waste water, or sewage by sorption using synthetic organic sorbents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/34—Treatment of water, waste water, or sewage with mechanical oscillations
- C02F1/36—Treatment of water, waste water, or sewage with mechanical oscillations ultrasonic vibrations
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
- C02F1/4672—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/20—Nature of the water, waste water, sewage or sludge to be treated from animal husbandry
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Biological Treatment Of Waste Water (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The invention discloses a treatment method of livestock culture wastewater. The wastewater sequentially flows through a reservoir, an oblique filter screen, a primary sedimentation tank, an ice tower purification tank, a magnetic oscillation tank, an aeration tank, an aerobic tank, a biochemical regulation tank, a secondary sedimentation tank, a buffer tank, a percolating filter, a disinfection tank, a sludge storage pot, and a reclaimed water recycling tank. The livestock wastewater treated by the method has COD removal rate of 97.8%, total nitrogen removal rate of 98.7%, five-day biochemical oxygen demand removal rate of 97.3%, suspended solids removal rate of 98.6%, chroma removal rate of 99.0%, and turbidity removal rate of 99.6%. Al-TiO2 is added to the fine sand in the percolating filter to improve processing efficiency of fine sand.
Description
Technical field
The present invention relates to a kind for the treatment of process of livestock breeding wastewater, belong to the water treatment field in environment protection.
Background technology
Aerobic treatment refers to a kind of technique making good use of oxygen animalcule process breeding wastewater.Aerobic biological process method can be divided into natural aerobic treatment and the large class of artificial aerobic treatment two.
Natural Aerobic biological process method is the method utilizing the microorganism in natural water body and soil to purify liquid waste, and also known as natural ecological resource method, mainly contains water body purification and soil sanitation two kinds.The former mainly contains oxidation pond (aerobic ponds, facultative lagoon, anaerobic pond) and culture pond etc.; The latter mainly contains land treatment systems (filter of slow rate, rapid method, overland flow) and artificial swamp etc.Natural ecological resource method not only capital cost is low, and power consumption is few, and this method is to the nutrition such as organism, nitrogen phosphorus of bio-refractory and the clearance of bacterium also higher than the second-stage treatment of routine, and part can reach the effect of tertiary treatment.In addition, under certain condition, this method coordinates sewage irrigation can realize sewage recycling utilization.The shortcoming of this method mainly large and treatment effect of floor space is subject to seasonal effect etc.If but plant's small scale and near have the discarded ditch pool and beach for when utilizing, the method should be selected with investment reduction and processing costs as far as possible.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind for the treatment of process of livestock breeding wastewater, livestock breeding wastewater flows into water reservoir, oblique filter screen is flowed into by difference of elevation in water reservoir, the large volume suspended substance that waste water contains in oblique filter screen is separated, waste water flows into preliminary sedimentation tank after flowing out slope net, filters out the silt in waste water, the impurity such as insoluble particles, waste water flows into adsorption tank by pipeline after preliminary sedimentation tank flows out, many group stainless steel mesh screens are evenly distributed in adsorption tank, every networking sieve thickness is 5cm, mesh screen is evenly distributed some pits on the surface, each pit is of a size of 1cm*1cm*1cm, epoxy resin glue is filled with in pit, absorption pool wall is fixed in mesh screen one end, the other end and pool wall leave spacing, many networking sieve interleaved are arranged in adsorption tank, form S type water stream channel, when waste water is to stainless steel mesh, batting shape suspended substance in water can stick by the epoxy resin glue of filling in pit, and remove from water, waste water flows out adsorption tank along the capable water stream channel of S and flows into serac purification, serac treating pond passes through refrigerator refrigerate, the temperature in pond is made to keep subzero 2 DEG C-subzero 6 DEG C, frigistor in serac starts refrigeration, the instant water of serac inside is made to become ice, ice is full of groove by the opening of bottom portion of groove because of volumetric expansion, waste water flows into from serac treating pond upper end, when flowing through serac suspended substance and the low organism of part freezing point can by groove freezing live thus remove from waste water, waste water flows into magnetic force vibration pond from serac treating pond, magnetic force vibration is provided with 4 ultrasonators and pair of electrodes bottom pond, the electric field that electrode produces and the sonic oscillation that produces of ultrasonator define compound Strong oxdiative effect, and the difficult decomposing organic matter in waste water is decomposed removal under ultrasonic electric field compound action, waste water, after magnetic force vibration pond process, is squeezed into aeration tank with pump, is increased the oxygen in water, then flow into Aerobic Pond by waste water, the larger molecular organics of difficult degradation is decomposed into the small organic molecule or CO that are easy to degrade
2and H
2o, improves the biodegradability of sewage greatly, then waste water flows into biochemical equalizing tank, and first regulate waste water ph to reach neutral, the organism afterwards in waste water is under anaerobic decomposed by anaerobic bacterium, waste water regulates after process through biochemistry and flows into second pond, and the microbial film that the biochemical treatment stage comes off carries out precipitate and separate at this, supernatant liquid enter Buffer Pool laggard enter diffusion cell, base sludge enters storage mud tank, and partial sludge is back to Aerobic Pond recirculation and uses, diffusion cell is that waste water carries out advanced treatment, and waste water is at pebbles, and rough sand, under the natural filtration of fine sand, reduces the numerical value of the pollutent such as chemical oxygen demand (COD) and ammonia nitrogen, after 12 hours, carry out back flushing to diffusion cell, the water outlet of diffusion cell enters sterilization pool, and sterilization pool adopts the concurrent disinfection mode of ozone generation and uv irradiating, eliminates the bacterium in water, in the water outlet inflow of sterilization pool in Water Sproading pond, for watching water or greening quietly.
Described diffusion cell adopts pebbles, rough sand and fine sand as filtrate, be followed successively by pebbles layer, rough sand layer and fine sand layer from top to bottom, pebbles mean diameter is 5cm, floor height is 0.8m, rough sand median size is 0.5 μm, floor height 1m, and fine sand median size is 0.2 μm, floor height is 1.5m, adds Al-TiO in fine sand
2improvement fine sand processing efficiency.
In described adsorption tank, mesh screen is detachable, periodic replacement.
The invention has the advantages that:
(1) working cost is cheap, saves working cost 40%-90%, stable, can ensure that effluent quality reaches the requirement of standard and national wastewater discharge standard.
(2), in the livestock breeding wastewater by native system process, the clearance of chemical oxygen demand (COD) reaches 97.8%; The clearance of total nitrogen reaches 98.7%, and the clearance of five-day BOD reaches 97,3%, and the clearance of suspended substance reaches 98.6%, chroma removal rate 99.0%, turbidity removal rate 99.6%.
(3) magnetic force vibrate pond produce frictional force little, operate steadily, sound pollution is little, easy to loading and unloading, and automation degree of equipment is high.
(4) native system adopts low-energy-consumptienvironment-friendlyhigh-precision environment-friendlyhigh-precision serac treating pond equipment, it appears in livestock breeding wastewater treatment system and serves innovation effect, has good treatment effect to particulate matters such as the solid of the difficult degradation occurred in breeding wastewater and the feathers of suspension type.
Accompanying drawing explanation
Fig. 1 is the treatment system schematic diagram of livestock breeding wastewater
The oblique filter screen of 1-water reservoir, 2-, 3-preliminary sedimentation tank, 4-adsorption tank, 5-serac treating pond, 6-magnetic force vibration pond, 7-aeration tank, 8-Aerobic Pond, the biochemical equalizing tank of 9-, 10-second pond, 11-Buffer Pool, 12-diffusion cell, 13-sterilization pool, 14-store up Water Sproading pond in mud tank, 15-.
Fig. 2 is the schematic diagram of serac treating pond
51-serac, 52-refrigerator, 53-turbocharger, 54-under meter, 55-pressure warning unit, 56-level indicator, 57-thermometer, 58-frigistor.
Fig. 3 is the schematic diagram of adsorption tank
41-water storage space, 45-stainless steel mesh screen.
Fig. 4 is the schematic diagram of serac
59-groove.
Fig. 5 is the schematic diagram of mesh screen
46-pit.
Embodiment
As shown in Figure 1, a treatment system for livestock breeding wastewater, this system comprises water reservoir 1, tiltedly filter screen 2, preliminary sedimentation tank 3, adsorption tank 4, serac treating pond 5, magnetic force vibration pond 6, aeration tank 7, Aerobic Pond 8, biochemical equalizing tank 9, second pond 10, Buffer Pool 11, diffusion cell 2, sterilization pool 13, storage mud tank 14, middle Water Sproading pond 15.Waste water enters the water inlet of water reservoir 1 by pipeline, the water outlet of water reservoir 1 connects the water inlet of oblique filter screen 2 by pipeline, the water outlet of oblique filter screen 2 connects the water inlet of preliminary sedimentation tank 3 by pipeline, the water outlet of preliminary sedimentation tank 3 connects the water inlet of adsorption tank 4 by pipeline, the water outlet of adsorption tank 4 connects the water inlet of serac treating pond 5 by pipeline, the water outlet of serac treating pond 5 connects the water inlet in magnetic force vibration pond 6 by pipeline, the water outlet in magnetic force vibration pond 6 connects the water inlet of aeration tank 7 by pipeline, the water outlet of aeration tank 7 connects the water inlet of Aerobic Pond 8 by pipeline, the water outlet of Aerobic Pond 8 connects the water inlet of biochemical equalizing tank 9 by pipeline, the water outlet of biochemical equalizing tank 9 connects the water inlet of second pond 10 by pipeline, the water outlet of second pond 10 passes through the water inlet of pipeline Connection Pool 11, the water outlet of Buffer Pool 11 connects the water inlet of diffusion cell 12 by pipeline, the water outlet of diffusion cell 12 connects the water inlet of sterilization pool 13 by pipeline, the mud discharging mouth of aeration tank 7 connects the first mud inlet of storage mud tank 14 by pipeline, the mud discharging mouth of second pond 10 connects second mud inlet in storage mud 14 pond by pipeline, the water inlet in Water Sproading pond 15 during the water outlet of sterilization pool 13 is connected by pipeline.Wherein, diffusion cell 12 adopts pebbles, rough sand and fine sand as filtrate, is followed successively by pebbles layer, rough sand layer and fine sand layer from top to bottom, pebbles mean diameter is 5cm, and floor height is 0.8m, and rough sand median size is 0.5 μm, floor height 1m, fine sand median size is 0.2 μm, and floor height is 1.5m, back flushing mouth is left at the bottom of pond, back flushing mouth is connected with pool wall by pvc pipe, and pvc pipe mouth diameter is 5cm, establishes 4 aeration opening altogether, be evenly distributed at the bottom of pond, the external backwashing pump equipment of back flushing mouth; As shown in Fig. 3, Fig. 5, many group stainless steel mesh screens 45 are evenly distributed in adsorption tank 4, thickness is 5cm, mesh screen 45 is evenly distributed some pits 46 on the surface, and each pit 46 is of a size of 1cm*1cm*1cm, is filled with epoxy resin glue in pit 46, absorption pool wall is fixed in mesh screen 45 one end, the other end and pool wall leave spacing, and many networkings are sieved 45 interleaved and are arranged in adsorption tank, form S type water stream channel; Magnetic force vibration is provided with 4 vibrators and 2 groups of electrodes bottom pond 6, and do anti-electrostatic process in pond, pond outer wall does insulation processing; As shown in Figure 4, the external refrigerator 52 of serac treating pond 5, inside is provided with many group seracs 51, serac 51 one-tenth beveled structure, tower height is 60cm, serac top surface inclination angle is 30 °, and diameter is 1.6m, and serac end face is provided with groove 59 every 20 °, opening is left bottom groove 59, can add tap water by pipeline in serac, and put frigistor 58 within it, the temperature in serac treating pond 5 maintains subzero 2-6 DEG C.
Waste water flows into water reservoir 1, flows into oblique filter screen 2, in water reservoir 1 by difference of elevation in oblique filter screen 2, the a large amount of large volume suspended substances contained in waste water are separated, after waste water flows out slope net 2, flow into preliminary sedimentation tank 3, filter out the silt in waste water, precipitation, the impurity such as small-sized insoluble particles; Waste water flows into adsorption tank 4 by pipeline after preliminary sedimentation tank 3 flows out, current flow out adsorption tank 4 along the capable water stream channel of S, suspended particulate in pond is along with fluid flowing transport, when waste water is to stainless steel mesh 45, under the effect of impact of water, batting shape suspended substance in water can stick by the epoxy resin glue of filling in pit, and to remove from water; In serac treating pond 5, freezed by refrigerator 52, the temperature in pond is made to keep subzero 2-6 DEG C, waste water flows into from serac treating pond 5 upper end, serac 51 inside adds tap water by pipeline, frigistor 58 in serac 51 starts refrigeration, the instant water of serac 51 inside is made to become ice, ice is full of groove by the opening bottom groove 59 because of volumetric expansion, waste water flows in serac treating pond 5, flow through serac 51, the low organism of a part of freezing point can by groove freezing live, suspended substance and the low organism of freezing point can be removed by this method; In magnetic force vibration pond 6, electrode produces the sonic oscillation effect that bottom electric field and pond, ultrasonator produces and defines compound Strong oxdiative effect, and the difficult decomposing organic matter in waste water is decomposed removal under ultrasonic electric field compound action; Waste water, after magnetic force vibration pond 6 processes, is squeezed into aeration tank 7 with pump, is increased the oxygen in water, then flow into Aerobic Pond 8 by waste water, the larger molecular organics of difficult degradation is decomposed into the small organic molecule or CO that are easy to degrade
2and H
2o, improves the biodegradability of sewage greatly; Waste water flows into biochemical equalizing tank 9, and first regulate waste water ph to reach neutral, the organism afterwards in waste water is under anaerobic decomposed by anaerobic bacterium; Waste water flows into second pond 10 after biochemical treatment, and the microbial film that the biochemical treatment stage comes off carries out precipitate and separate at this, and supernatant is discharged, and base sludge enters storage mud tank 14, and partial sludge is back to Aerobic Pond 8 recirculation and uses; Further advanced treatment is carried out for waste water in diffusion cell 12, and waste water is at pebbles, and rough sand, under the natural filtration of fine sand, reduces the numerical value of the pollutent such as chemical oxygen demand (COD) and ammonia nitrogen, after 12 hours, carry out back flushing to diffusion cell 12; Water outlet behind diffusion cell 12 enters sterilization pool 13, and sterilization pool 13 adopts ozone generation technology and uv sterilisation to use simultaneously, eliminate in water with bacterium; In the water outlet inflow of sterilization pool 13 in Water Sproading pond 15, for watching water or greening quietly.
Claims (3)
1. the treatment process of a livestock breeding wastewater, it is characterized in that, livestock breeding wastewater flows into water reservoir, oblique filter screen is flowed into by difference of elevation in water reservoir, the large volume suspended substance that waste water contains in oblique filter screen is separated, waste water flows into preliminary sedimentation tank after flowing out slope net, filters out the silt in waste water, the impurity such as insoluble particles, waste water flows into adsorption tank by pipeline after preliminary sedimentation tank flows out, many group stainless steel mesh screens are evenly distributed in adsorption tank, every networking sieve thickness is 5cm, mesh screen is evenly distributed some pits on the surface, each pit is of a size of 1cm*1cm*1cm, epoxy resin glue is filled with in pit, absorption pool wall is fixed in mesh screen one end, the other end and pool wall leave spacing, many networking sieve interleaved are arranged in adsorption tank, form S type water stream channel, when waste water is to stainless steel mesh, batting shape suspended substance in water can stick by the epoxy resin glue of filling in pit, and remove from water, waste water flows out adsorption tank along the capable water stream channel of S and flows into serac purification, serac treating pond passes through refrigerator refrigerate, the temperature in pond is made to keep subzero 2 DEG C-subzero 6 DEG C, frigistor in serac starts refrigeration, the instant water of serac inside is made to become ice, ice is full of groove by the opening of bottom portion of groove because of volumetric expansion, waste water flows into from serac treating pond upper end, when flowing through serac suspended substance and the low organism of part freezing point can by groove freezing live thus remove from waste water, waste water flows into magnetic force vibration pond from serac treating pond, magnetic force vibration is provided with 4 ultrasonators and pair of electrodes bottom pond, the electric field that electrode produces and the sonic oscillation that produces of ultrasonator define compound Strong oxdiative effect, and the difficult decomposing organic matter in waste water is decomposed removal under ultrasonic electric field compound action, waste water, after magnetic force vibration pond process, is squeezed into aeration tank with pump, is increased the oxygen in water, then flow into Aerobic Pond by waste water, the larger molecular organics of difficult degradation is decomposed into the small organic molecule or CO that are easy to degrade
2and H
2o, improves the biodegradability of sewage greatly, then waste water flows into biochemical equalizing tank, and first regulate waste water ph to reach neutral, the organism afterwards in waste water is under anaerobic decomposed by anaerobic bacterium, waste water regulates after process through biochemistry and flows into second pond, and the microbial film that the biochemical treatment stage comes off carries out precipitate and separate at this, supernatant liquid enter Buffer Pool laggard enter diffusion cell, base sludge enters storage mud tank, and partial sludge is back to Aerobic Pond recirculation and uses, diffusion cell is that waste water carries out advanced treatment, and waste water is at pebbles, and rough sand, under the natural filtration of fine sand, reduces the numerical value of the pollutent such as chemical oxygen demand (COD) and ammonia nitrogen, after 12 hours, carry out back flushing to diffusion cell, the water outlet of diffusion cell enters sterilization pool, and sterilization pool adopts the concurrent disinfection mode of ozone generation and uv irradiating, eliminates the bacterium in water, in the water outlet inflow of sterilization pool in Water Sproading pond, for watching water or greening quietly.
2. the treatment process of livestock breeding wastewater according to claim 1, it is characterized in that, diffusion cell adopts pebbles, rough sand and fine sand as filtrate, and be followed successively by pebbles layer, rough sand layer and fine sand layer from top to bottom, pebbles mean diameter is 5cm, floor height is 0.8m, rough sand median size is 0.5 μm, floor height 1m, and fine sand median size is 0.2 μm, floor height is 1.5m, adds Al-TiO in fine sand
2improvement fine sand processing efficiency.
3. the treatment process of livestock breeding wastewater according to claim 1, is characterized in that, in adsorption tank, mesh screen is detachable, periodic replacement.
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