CN106348543A - Aquaculture wastewater purification treatment method and device - Google Patents
Aquaculture wastewater purification treatment method and device Download PDFInfo
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- CN106348543A CN106348543A CN201610963682.5A CN201610963682A CN106348543A CN 106348543 A CN106348543 A CN 106348543A CN 201610963682 A CN201610963682 A CN 201610963682A CN 106348543 A CN106348543 A CN 106348543A
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- 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
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- 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
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1263—Sequencing batch reactors [SBR]
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- 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
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1268—Membrane bioreactor systems
- C02F3/1273—Submerged membrane bioreactors
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- 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
- C02F3/282—Anaerobic digestion processes using anaerobic sequencing batch reactors
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- 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
- C02F3/2853—Anaerobic digestion processes using anaerobic membrane bioreactors
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- 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
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
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- 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
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
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- 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
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- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F2001/007—Processes including a sedimentation step
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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- 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
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
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- 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
- C02F3/30—Aerobic and anaerobic processes
- C02F3/301—Aerobic and anaerobic treatment in the same reactor
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Abstract
The invention discloses an aquaculture wastewater purification treatment method and device. The method comprises the following steps: (1) allowing the pretreated aquaculture wastewater to enter a primary SBBR (Sequencing Biofilm Batch Reactor) biological anoxic reactor; (2) allowing the wastewater treated by the primary SBBR biological anoxic reactor to enter a primary SBBR biological aerobic reactor; and (3) allowing the wastewater treated by the primary SBBR biological aerobic reactor to enter a primary sedimentation basin for precipitating, and collecting the precipitate and supernatant. By utilizing the method and the device disclosed by the invention, wastewater with high CODCr, high BOD5 and high ammonia nitrogen produced in pig farming enterprises is treated, and after the pretreatment and two-stage biochemical treatment, the obtained wastewater is greatly lower than the effluent quality requirement specified by Ministry of Environmental Protection, the content of CODCr is less than or equal to 200mg/L; the content of BOD5 is less than or equal to 100mg/L; the content of SS is less than or equal to 120mg/L; the content of NH4-N is less than or equal to 40mg/L; and the pH value is 6-9. The wastewater can be directly discharged and also can be used for farm irrigation.
Description
Technical field
The invention belongs to aquaculture technical field of waste water processing, be specifically related to a kind of cultivation wastewater purification processing method and
Device.
Background technology
With the fast development of animal husbandry, large-scale cultivation gets more and more.The also strong guarantee of the appearance of large-scale cultivation
Meat supply, national people's livelihood people meter and social stability.But the fecal sewage that cultivation produces also has become serious pollution of area source
Source, had both polluted environment, affected animal husbandry epidemic prevention and control again.And live pig all comes first in the number of animals raised and consumption figure, account for meat and disappear
The 65% of the amount of expense, is also the polluter of most serious in poultry.
Livestock-raising field sewage mainly includes animal urine, portion of stool, biogas slurry and flushing water, belongs to high concentration organic sewage,
And float and ammonia-nitrogen content are big.After this raw sewerage enters natural water, make solid suspension in water, organic
Thing and content of microorganisms raise, and change physics, chemistry and the biome composition of water body, so that water quality is degenerated.Also contain in sewage
Substantial amounts of pathogenic microorganism will be diffused propagating by water body or by aquatic animals and plants, endanger human and livestock health.In order to accomplish
The three of economic benefit, social benefit and environmental benefit organically combines, and makes enterprise walk the road of sustainable development it is necessary to dirty to it
Water is effectively administered.
Because organic concentration is high, ammonia nitrogen concentration is high, stench is serious, conventional detests livestock and poultry breeding industry waste discharge
Oxygen-Aerobic Process for Treatment is all difficult to qualified discharge.Some Enterprises seem to have accomplished qualified discharge in appearance, but are substantially and adopt
With stealthily spelling into subsoil water, river, tap water, carry out the breeding wastewater of diluting high-concentration by other " good water ", make outlet
Index meets discharge standard, leads to the significant wastage of resource.Waste water completely not up to standard is directly discharged to by enterprise steathily that even have
In river, huge injury is brought to surrounding and human and livestock health.The wastewater treatment of some enterprises can be up to standard, but exists
Cost price is high, water outlet is not smooth, do not have this series of problems such as practicality.Therefore in reasonable cost, accomplish to allow foster
Growing the Treatment process of discharged wastewater met the national standard and technique is an extremely difficult technology.
The present invention takes the lead in using sbbr membrane technology, and the breeding wastewater meeting discharge standard obtaining stable low cost is controlled
Reason technology and technique.Wherein sbbr embrane method is sequencing batch biofilm reactor (sequencing biofilm batch
Reactor abbreviation), is a kind of Sewage Biological Treatment new technology studied both at home and abroad at present, apply, but in waste water of livestock poultry
Seldom there is research in improvement.Sbbr is a kind of novel combined biofilm reactor in sbr reactor, the different filler of interior filling
(as fiberfill, activated carbon, haydite etc.).
Content of the invention
The invention discloses a kind of cultivation wastewater purification treating method and apparatus, after the method and device are processed after
Waste water is significantly less than Chinese Ministry of Environmental Protection's regulation effluent quality requirement, has stronger practicality.
A kind of cultivation wastewater purification processing method, comprises the steps:
(1) pretreated breeding wastewater enters one-level sbbr biology facultative reaction tank, wherein oxygen concentration be 0.2～
1.0mg/l, hydraulic detention time is 1～3 day；
(2) waste water after one-level sbbr biology facultative reaction tank is processed enters one-level sbbr biology aerobic reaction tank, wherein
Oxygen concentration is 3～9mg/l, and hydraulic detention time is 1～4 day；
(3) waste water after one-level sbbr biology aerobic reaction tank is processed enters first stage precipitation tank and is precipitated, and collects precipitation
Thing and supernatant.
Pretreatment is carried out typically in regulating reservoir, be can achieve the average to waste water, is adjusted Acidity of Aikalinity etc. by regulating reservoir
Process, be easy to being smoothed out of subsequent biochemical process.
The waste water processing through above-mentioned steps is generally possible to meet environmental requirement, for requiring higher occasion, as excellent
Choosing, the clear liquid of first stage precipitation tank carries out following steps (4)～(6) further and processes:
(4) clear liquid of first stage precipitation tank enters into two grades of sbbr biology amphimicrobian reaction tanks, wherein oxygen concentration be 0.6～
5.0mg/l, hydraulic detention time is 1～3 day；
Waste water after (5) two grades of sbbr biology amphimicrobian reaction tanks are processed enters two grades of sbbr biology aerobic reaction tanks,
Wherein oxygen concentration is 4～9mg/l, and hydraulic detention time is 3～7 days；
Waste water entrance second-level settling pond after (6) two grades of sbbr biology aerobic reaction tanks are processed is precipitated, and collects precipitation
Thing and supernatant.
The one-level sbbr biology facultative reaction tank of the present invention, one-level sbbr biology aerobic reaction tank, two grades of sbbr are biological simultaneous
Property anaerobic reation pool, two grades of sbbr biology aerobic reaction tanks are built with haydite, plastics or other fixed type biological carriers.Or one
Level sbbr biology facultative reaction tank, one-level sbbr biology aerobic reaction tank, two grades of sbbr biology amphimicrobian reaction tank, two grades
Sbbr biology aerobic reaction tank is built with the granular bio-carrier fluidizing of activated carbon or also can be biological in described one-level sbbr
Facultative reaction tank, one-level sbbr biology aerobic reaction tank, two grades of sbbr biology amphimicrobian reaction tanks, two grades of sbbr biology aerobics
The built-in permeable membrane of reaction tank, this film can become the attachment of microorganism, can complete oxygenation function simultaneously again.Make
For preferred, described one-level sbbr biology facultative reaction tank, one-level sbbr biology aerobic reaction tank, two grades of sbbr biology amphimicrobians
The filler adding in reaction tank, two grades of sbbr biology aerobic reaction tanks is working of plastics, for example, can be plastic hoop, plastic tube etc.
There is the structure of similar tubulose or ring-type, the load of more favourable antibacterial and fixation.
Preferably, in described one-level sbbr biology facultative reaction tank, the volume of filler account for total reactor volume 15～
40%, bottom is provided with sludge blanket, and THICKNESS CONTROL is at 0.2～0.5 meter.
Preferably, oxygen concentration is 0.2～1.0mg/l in described one-level sbbr biology facultative reaction tank.During hydraulic retention
Between be 2～2.5 days.
Preferably, in described one-level sbbr biology aerobic reaction tank, the volume of filler account for total reactor volume 15～
40%, more than continuous aeration 16 hour/day.As further preferred, oxygen concentration in institute of institute one-level sbbr biology aerobic reaction tank
For 4～8mg/l, hydraulic detention time is 2～2.5 days.
Described first stage precipitation tank includes flocculant, and described flocculant is pac and pam, the pac being wherein 30% with content
Calculate, the percentage by weight of the addition of pac is 0.2～5%, and wherein pam is 1,500,000～6,000,000 molecular weight pam, and addition is 0
～one thousandth.Preferably, described first stage precipitation tank includes flocculant, described flocculant is pac and pam, wherein to contain
Measure the pac for 30% to calculate, the percentage by weight of the addition of pac is 0.2～2%, and wherein pam is 1,500,000～3,000,000 molecular weight
Pam, addition be 0～ten thousand/.
Preferably, the volume of described two grades of sbbr biology aerobic reaction tanks is one-level sbbr biology aerobic reaction tank
1.5～2.5 times.
Described second-level settling pond includes flocculant, and described flocculant is pac and pam, the pac being wherein 30% with content
Calculate, the percentage by weight of the addition of pac is 0.1～1%, and wherein pam is 1,500,000～6,000,000 molecular weight pam, and addition is 0
～one thousandth.Preferably, described flocculant is pac and pam, the pac being wherein 30% with content calculates, the addition of pac
Percentage by weight be 0.1～0.6%, wherein pam be 1,500,000～3,000,000 molecular weight pam, addition be 0～ten thousand/.
Preferably, described breeding wastewater is Pig raising wastewater, its codcrFor 3000-5500mg/l；Its bod5For 1600-
2500mg/l；Its ss is 2000mg/l；Its nh4- n is 450-700mg/l；Its ph is 6～8.
Present invention also offers a kind of cultivation wastewater purification processing meanss, including pretreatment unit, one-level biochemical treatment system
System and secondary biochemical treatment system；
Described pretreatment unit is regulating reservoir；
It is anti-that described one-level biochemical treatment system mainly includes one-level sbbr biology facultative reaction tank, one-level sbbr biology aerobic
Ying Chi and first stage precipitation tank；
It is anti-that described secondary biochemical treatment system mainly includes two grades of sbbr biology facultative reaction tanks, two grades of sbbr biology aerobics
Ying Chi and second-level settling pond.
Preferably, it is dynamic to be provided with offer waste water conveying between described pretreatment unit and one-level sbbr biology facultative reaction tank
The water pump of power, the feed liquid after water pump ensures to process in pretreatment unit smoothly enters into the biological simultaneous oxygen reaction of one-level sbbr
Pond；It is provided with the gravity for waste water conveying between described one-level sbbr biology facultative reaction tank and one-level sbbr biology aerobic reaction tank
Gravity line, realizes the transfer of waste water by flow by gravity effect；Described one-level sbbr biology aerobic reaction tank bottom is provided with one
Level sedimentation tank connection and the hole connecting；Described first stage precipitation tank bottom is provided with mud clearing valve, can be by automatically controlling or people
Industry control system periodically turns on mud cleaning valve, and mud is cleared up.
This technology takes the lead in using sbbr membrane technology, and the breeding wastewater meeting discharge standard obtaining stable low cost is controlled
Reason technology and technique.Simultaneously the present invention using and oxygen treatment technology can play anaerobism organics removal absolute magnitude high, aerobic to having
The high respective advantage of machine thing clearance, improves total organic matter treatment effeciency.Macromole in waste water can be had by facultative microbe
Machine thing is decomposed into easily biochemical small organic molecule, improves the biodegradability of waste water, creates conditions for follow-up Aerobic Process for Treatment, improves
The whole structure of biochemical treatment.
It is demonstrated experimentally that utilizing methods and apparatus of the present invention, to raising pigs, enterprise produces high codcr, high bod5At waste water
Reason, after pretreatment, Two-Stage Biochemical process and ph are adjusted, the waste water obtaining is significantly less than Chinese Ministry of Environmental Protection's regulation effluent quality will
Ask, codcr≤200mg/l；bod5≤100mg/l；ss≤120mg/l；nh4-n≤40mg/l；Ph is 6～9.Can directly arrange
Put it is also possible to be used for field irrigation.
Brief description
Fig. 1 is the overlooking the structure diagram of the processing meanss of the present invention.
Fig. 2 is the schematic diagram in the a-a face of Fig. 1.
Fig. 3 is the schematic diagram in the b-b face of Fig. 1.
Fig. 4 is the schematic diagram in the c-c face of Fig. 1.
Fig. 5 is the schematic diagram in the d-d face of Fig. 1.
Fig. 6 is the processing technological flow figure of the present invention.
Specific embodiment
The original water quality situation of the sewage that embodiment is processed:
codcr: 3000-5500mg/l；bod5: 1600-2500mg/l；Ss:2000mg/l；nh4- n:450-700mg/l；
Ph is 7 about.
Chinese Ministry of Environmental Protection specifies effluent quality (" livestock and poultry breeding industry the pollutant emission standard " (gb18596- requiring to reach
2001)): codcr≤400mg/l；bod5≤150mg/l；ss≤200mg/l；nh4-n≤80mg/l；Ph is 6～9.
Referring to shown in accompanying drawing 1～6, a kind of device processing Wastewater from Pig Farm: include pretreatment unit, one-level biochemical treatment
System and secondary biochemical treatment system:
Drainage flow direction is installed, pretreatment unit mainly includes regulating reservoir；
One-level biochemical treatment system mainly include one-level sbbr biology facultative reaction tank (f4), one-level sbbr biology aerobic anti-
Ying Chi (f3) and first stage precipitation tank (both preliminary sedimentation tanks)；
It is anti-that secondary biochemical treatment system mainly includes two grades of sbbr biology facultative reaction tank (f2), two grades of sbbr biology aerobics
Ying Chi (f1) and second-level settling pond (both second ponds)；
The annexation of above-mentioned each unit is as follows:
(1) effect of regulating reservoir is homogenizing and all measures, typically it is also possible to consider having precipitation, mixing, dosing, neutralization and pre-sour concurrently
The functions such as change.In the present embodiment, the effect of regulating reservoir be also embody above-mentioned effect and design.With reference to Fig. 1, Fig. 3.
(2) waste water that regulating reservoir process completes is lifted into one-level sbbr biology by water pump from acidifying regulating reservoir and oxygen is anti-
Ying Chi (f4), 4 meters of hoisting depth.With reference to Fig. 1, Fig. 3.
(3) setting in one-level sbbr biology facultative reaction tank (or one-level sbbr biology amphimicrobian reaction tank can be called)
There is sbbr film, be provided with agitating device, appropriateness can increase water body oxygen capacity and waste water homogenizing, oxygen concentration 0.2- when necessary
1.0mg/l.With reference to Fig. 1, Fig. 3.
In sbbr, filler may be selected plastics floatation part, can directly be suspended in waste water system, it would however also be possible to employ fixing skill
Art, filler is fixed in the middle part of reaction tank or bottom, volume account for the 15-40% of total reactor volume.
Bottom is provided with sludge blanket, is also non-precipitating layer, replaceable, THICKNESS CONTROL in 0.2-0.5 rice, as stablizing water body and
Retention.
(4) it is being subsequently that one-level sbbr biology facultative reaction tank has been connected one-level sbbr biology aerobic reaction tank, passing through
Biological contact reaction, cuts down various pollutant, places sbbr film in one-level sbbr biology aerobic reaction tank, and its volume accounts for overall reaction
The 15-40% of device volume.From the sewage of one-level and oxygen reactor, one-level sbbr biology aerobic is reached by flow by gravity effect anti-
Ying Chicong flows.With reference to Fig. 1, Fig. 3.
(5) hole that one-level sbbr biology aerobic reaction tank is connected by bottom is connected with first stage precipitation tank (i.e. preliminary sedimentation tank),
By flowing into first stage precipitation tank from gravity.One-level sbbr biology aerobic reaction tank, using 24 hours uninterrupted aerations, oxygen concentration reached
3-6mg/l.With reference to Fig. 1, Fig. 2 and Fig. 4.
First stage precipitation tank is automatic cleaning.Take and manually periodically open bottom water valve, mud is in sludge-tank.
Sedimentation tank is mainly mud and is reacted with pac (polyaluminium chloride), pam (polyacrylamide), promotes flocculent deposit.30%
The addition 0.3-1.5% (accounting for the percentage by weight of total sludge quantity) of pac, adjusts according to water quality condition.From 1500000 molecules
Amount pam, addition 0～ten thousand/(accounting for the percentage by weight of total sludge quantity), is also to be adjusted according to water quality condition.
Through above-mentioned process, first stage precipitation tank clear water has reached Chinese Ministry of Environmental Protection's regulation effluent quality requirement completely, and (" poultry are supported
Grow industry pollutant emission standard " (gb18596-2001).
(6) first stage precipitation tank clear water, by flow by gravity be applied to two grades of sbbr biology amphimicrobian reactors, two grades again
Sbbr biology aerobic reaction tank (cell body is 1.5-2.5 times of one-level sbbr biology aerobic reaction tank), and arrive two-stage precipitation again
Pond (i.e. second pond), the substantially same level system of design principle, increased this system, so that every evaluation index is reduced further.Greatly
It is less than greatly Chinese Ministry of Environmental Protection's regulation effluent quality and require (" livestock and poultry breeding industry pollutant emission standard " (gb18596-2001).Two grades are sunk
Shallow lake pond, the addition 0.1-0.6% of 30%pac, adjusted according to water quality condition.From 1500000 molecular weight pam, addition 0～
Ten thousand/, it is also to be adjusted according to water quality condition.Referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 5.
As shown in fig. 6, actual process is:
Collect Pig raising wastewater, through precipitation, after solid-liquid separating machine or the most of solid content of belt filter press removal, enter and adjust
Section pond, or biogas slurry entrance regulating reservoir, enter peracid pond and adjust, then lean on water pump lifting to enter one-level Biochemistry Reaction System, progressively
The one-level oxygen compatibility pool that entrance sbbr film is characterized, sbbr film are characterized one-level Aerobic Pond and in first stage precipitation tank and certain
Ratio pam, pac acts on, and removes most of pollutant pond, and section bottom precipitate flows in silt basin by bottom gate, band
After formula pressure filter removes most of solid content, liquid portion lifting is back to one-level Biochemistry Reaction System.Most of one-level precipitation
Pond clear water gravity flow enters secondary biochemical response system, ibid, and acts on certain proportion pam, pac in second-level settling pond, removes
Solid content, section bottom precipitate flows in silt basin by bottom gate, after belt filter press removes most of solid content, liquid
Body portion lifting is back to secondary biochemical response system.Complete to process most second-level settling pond clear water outflow system, then warp
Ph adjusts qualified discharge after sterilization pool.Unnecessary activated sludge in sbbr reaction tank, can flow in silt basin by bottom gate,
Remove through belt filter press after most of solid content, outward transport after processing through drying bed is processed, and liquid enters first stage precipitation tank and follows
Ring is processed.
Processing parameter (day processes the design parameter of 40-50 ton water) of the present invention controls as follows:
1st, regulating reservoir: size: long 7.5m, wide 4m, deep 3m
2nd, one-level sbbr biology amphimicrobian reaction tank: one-level sbbr biology amphimicrobian reaction tank adopts mbr anaerobism anti-
Device and sbbr membrane technology is answered to combine, this mbr reactor is the of a relatively high anaerobic treatment reactor for the treatment of effeciency, has volume
Load is high, the advantages of hydraulic detention time is short.Size: long 5m, wide 4m, deep 5m.Hydraulic detention time (hrt): 2～2.5 days.
3rd, one-level sbbr biology aerobic reaction tank: select sbbr handling process to be typically based on the feature of the uninterrupted discharge of sewage
And require removal cod at the same time also will go deamination phosphorus removing function simultaneously.Size: long 5m, wide 4m, deep 5m；Hydraulic detention time
(hrt): 2～2.5 days.
4th, first stage precipitation tank (attached medicine charging function): the effect of preliminary sedimentation tank is to sink the mud that one-level biochemical reactor takes out of,
Lighten the load for next stage biochemical treatment.Size: long 2.5m, wide 3.3m, deep 5m.Hydraulic detention time (hrt): 0.8～1.2
My god.
5th, two grades of sbbr biology amphimicrobian reaction tanks: in present treatment technique, secondary anaerobic reactor selects mbr anaerobism anti-
Answer device (sbbr membrane technology), mbr reactor is the of a relatively high anaerobic treatment reactor for the treatment of effeciency, there is volumetric loading height,
The advantages of hydraulic detention time is short.Size: long 5m, wide 4m, deep 5m.Hydraulic detention time (hrt): 2～2.5 days.
6th, two grades of sbbr biology aerobic reaction tanks: select sbbr handling process to be typically based on the feature of the uninterrupted discharge of sewage
And require removal cod at the same time also will go deamination phosphorus removing function simultaneously.Size: long 10m, wide 4m, deep 5m.Hydraulic detention time
(hrt): 4～5 days.
7th, second-level settling pond (attached medicine charging function): the effect of second-level settling pond is to sink the dirt that secondary biochemical reactor takes out of
Mud.Size: long 2.5m, wide 3.3m, deep 5m.Hydraulic detention time (hrt): 0.8～1.2 day.
8th, roots blower (aeration use): power of motor: 11kw: quantity: 2, one to open one standby.
9th, belt filter press: carry out filtering the most of bulky grain pig manure dregs of removal, to mitigate post processing load.
Treatment effect data
Treatment effect mainly presses pretreatment, Two-Stage Biochemical is processed, and whole technique is with the qualified discharge of sewage as terminal.
The original water quality situation of sewage: cod after pretreatmentcr3000-5500mg/l；bod51600-2500mg/l；ss
2000mg/l；nh4-n 450-700mg/l；Ph=7 about, from the glad pig breeding farm in Nantong sea.
After one-level biochemical treatment system biochemical treatment, the waste water obtaining fully meets Chinese Ministry of Environmental Protection's regulation effluent quality will
Ask；After secondary biochemical treatment system, the water of discharge is significantly less than Chinese Ministry of Environmental Protection's regulation effluent quality and requires (" livestock and poultry breeding industry
Pollutant emission standard " (gb18596-2001): codcr≤400mg/l；bod5≤150mg/l；ss≤200mg/l；nh4-n
≤80mg/l；Ph is 6～9.
Debugged through 1 year, many unit sampling observations of hundreds of times detect with irregular, the third party (territory containing detection qu alification
Resources Department's Hefei mineral resources Supervision Test Center, Nantong Zhong Qi Environmental Technology AS, a detection academy has in Jiaxing
Limit company etc.) measure and department of Zhejiang University laboratory, this enterprise laboratory hundreds of time detections, actual codcr≤
200mg/l；bod5≤100mg/l；ss≤120mg/l；nh4-n≤40mg/l；Ph is 6～9.
Claims (10)
1. a kind of cultivation wastewater purification processing method is it is characterised in that comprise the steps:
(1) pretreated breeding wastewater enters one-level sbbr biology facultative reaction tank, and wherein oxygen concentration is 0.2～1.0mg/l,
Hydraulic detention time is 1～3 day；
(2) waste water after one-level sbbr biology facultative reaction tank is processed enters one-level sbbr biology aerobic reaction tank, and wherein oxygen is dense
Spend for 3～9mg/l, hydraulic detention time is 1～4 day；
(3) one-level sbbr biology aerobic reaction tank process after waste water enter first stage precipitation tank precipitated, collect precipitate and
Supernatant.
2. cultivation wastewater purification processing method according to claim 1 is it is characterised in that the clear liquid of first stage precipitation tank enters one
Step carries out following steps (4)～(6) and processes:
(4) clear liquid of first stage precipitation tank enters into two grades of sbbr biology amphimicrobian reaction tanks, wherein oxygen concentration be 0.6～
5.0mg/l, hydraulic detention time is 1～3 day；
Waste water after (5) two grades of sbbr biology amphimicrobian reaction tanks are processed enters two grades of sbbr biology aerobic reaction tanks, wherein
Oxygen concentration is 4～9mg/l, and hydraulic detention time is 3～7 days；
Waste water after (6) two grades of sbbr biology aerobic reaction tanks are processed enters second-level settling pond and is precipitated, collect precipitate and
Supernatant.
3. cultivation wastewater purification processing method according to claim 1 and 2 is it is characterised in that described one-level sbbr is biological
In facultative reaction tank, the volume of filler accounts for the 15～40% of total reactor volume, and bottom is provided with sludge blanket, and THICKNESS CONTROL is 0.2
～0.5 meter.
4. cultivation wastewater purification processing method according to claim 1 and 2 is it is characterised in that described one-level sbbr is biological
In aerobic reaction tank, the volume of filler accounts for the 15～40% of total reactor volume, more than continuous aeration 16 hour/day.
5. cultivation wastewater purification processing method according to claim 1 and 2 is it is characterised in that in described first stage precipitation tank
Including flocculant, described flocculant is pac and pam, and the pac being wherein 30% with content calculates, the weight percent of the addition of pac
For 0.2～5%, wherein pam is 1,500,000～6,000,000 molecular weight pam to ratio, addition is 0～ten thousand/.
6. cultivation wastewater purification processing method according to claim 2 is it is characterised in that described two grades of sbbr biology aerobics
The volume of reaction tank is 1.5-2.5 times of one-level sbbr biology aerobic reaction tank.
7. cultivation wastewater purification processing method according to claim 2 is it is characterised in that described second-level settling pond includes
Flocculant, described flocculant is pac and pam, and the pac being wherein 30% with content calculates, and the percentage by weight of the addition of pac is
0.1～1%, wherein pam are 1,500,000～6,000,000 molecular weight pam, and addition is 0～one thousandth.
8. cultivation wastewater purification processing method according to claim 1 and 2 is it is characterised in that described breeding wastewater is foster
Pig waste water, its codcrFor 2000-7000mg/l；Its bod5For 1500-3500mg/l；Its ss is more than 1000mg/l；Its nh4-n
For 350-1000mg/l；Its ph is 6～8.
9. a kind of cultivation wastewater purification processing meanss, including pretreatment unit, one-level biochemical treatment system and secondary biochemical treatment
System it is characterised in that:
Described one-level biochemical treatment system mainly includes one-level sbbr biology facultative reaction tank, one-level sbbr biology aerobic reaction tank
And first stage precipitation tank；
Described secondary biochemical treatment system mainly includes two grades of sbbr biology facultative reaction tanks, two grades of sbbr biology aerobic reaction tanks
And second-level settling pond.
10. cultivation wastewater purification processing meanss according to claim 9 it is characterised in that: described pretreatment unit and one
It is provided with, between level sbbr biology facultative reaction tank, the water pump providing waste water to convey power；Described one-level sbbr biology facultative reaction tank
It is provided with the gravity line for waste water conveying and one-level sbbr biology aerobic reaction tank between；Described one-level sbbr biology aerobic
Reaction tank bottom is provided with first stage precipitation tank connection and the hole connecting；Described first stage precipitation tank bottom is provided with mud clearing valve.
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| CN108483804A (en) * | 2018-04-02 | 2018-09-04 | 郑州大智农牧科技有限公司 | A kind of scale animal and poultry cultivation liquid dung recycling comprehensive processing technique |
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