CN105384248A - Pig breeding farm waste water anaerobic digestion solution aerobic treatment method - Google Patents
Pig breeding farm waste water anaerobic digestion solution aerobic treatment method Download PDFInfo
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- CN105384248A CN105384248A CN201510755993.8A CN201510755993A CN105384248A CN 105384248 A CN105384248 A CN 105384248A CN 201510755993 A CN201510755993 A CN 201510755993A CN 105384248 A CN105384248 A CN 105384248A
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- treatment method
- anaerobic digestion
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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
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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
- 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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- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
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- Organic Chemistry (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention relates to the technical field of waste water treatment and particularly discloses a pig breeding farm waste water anaerobic digestion solution aerobic treatment method. The treatment method comprises the steps that a two-stage AO process is used for treating a pig breeding farm waste water anaerobic digestion solution; pig breeding farm raw water untreated through anaerobic digestion is added into an anoxic pond of the two-stage AO process, and the addition mass is 20-40%. According to the treatment method, after the raw water is added into the anoxic pond, a carbon source needed by growth and reproduction of microorganisms and denitrification is increased, and biochemical performance of the pig breeding farm waste water anaerobic digestion solution can be effectively improved; the denitrification effect of the anoxic pond is enhanced, the ammonia nitrogen removing effect is enhanced, alkalinity is supplemented to an aerobic pond, and the stability of a pH value of the aerobic pond is maintained; in the operation process of the two-stage AO process treatment system, the alkalinity and the carbon source do not need to be supplemented, and the operation cost is saved greatly.
Description
Technical field
The present invention relates to technical field of waste water processing, be specifically related to a kind of digested piggery wastewater Aerobic treatment method.
Background technology
Along with national pig industry is constantly towards mass-producing, the fast development of intensive direction; pig raising waste thing; particularly the organism, ammonia nitrogen and the total phosphorus concentration that contain of piggery wastewater is higher; not treated or process and not in placely directly enter outside body of water; easily cause severe contamination to local water surrounding, the environmental pollution that current livestock and poultry breeding industry causes has been subject to paying close attention to of relevant department and various circles of society.
Process experience both domestic and external shows, utilizes anaerobic digestion techniques process waste water of livestock poultry, Biogas, makes waste minimizing, resource utilization, both can environmental protect, realizes again the recycle of resource, has become the significant element that waste water of livestock poultry process is indispensable.But relevant research shows, piggery wastewater is after anaerobic digestion, and biodegradability is deteriorated, and BOD5/COD is only 0.19 (it is generally acknowledged that BOD5/COD is greater than 0.3 and just has biodegradability), and carbon-nitrogen ratio numerous imbalances, brings very large difficulty to follow-up aerobic treatment.
The aerobic treatment process technology generally adopted at present is more, mainly contains SBR technique, oxidation ditch process etc., but ubiquity investment is large, working cost is high, control condition requires the problems such as tight, treatment effect is undesirable.
Summary of the invention
In view of this, be necessary for above-mentioned problem, a kind of digested piggery wastewater Aerobic treatment method is provided.Method provided by the invention mainly improves digested piggery wastewater performance by the former water in pig farm added without Anaerobic Digestion on two-stage AO Process ba-sis, and effectively solution digested piggery wastewater carbon-nitrogen ratio is lacked of proper care, biodegradability is poor, microorganism culturing difficulty large, Aerobic Pond pH value sharply descends degradation problem.
For achieving the above object, the present invention takes following technical scheme:
Digested piggery wastewater Aerobic treatment method of the present invention, comprises two-stage AO art breading digested piggery wastewater; In the anoxic pond of two-stage AO technique, add the pig farm Yuan Shui without Anaerobic Digestion;
Further, the mass percentage that the former water in described pig farm adds is 20% ~ 40%, can effectively improve piggery wastewater anaerobic digestion performance;
Further, described two-stage AO process parameter control is: hydraulic detention time (HRT): 1 ~ 2d; Water inlet volumetric loading: 0.5 ~ 1.0kgCOD/ (m
3d); Sludge concentration (MLSS): 2000 ~ 4000mg/L; Sludge loading: 0.08 ~ 0.15kgBOD
5/ kgMLSSd; Aerobic Pond dissolved oxygen: 2 ~ 5mg/L; Dissolved oxygen in anoxic tank: 0.2 ~ 0.5mg/L; Mixed-liquor return mass percentage is: 100% ~ 200%; Sludge reflux mass percentage is: 50% ~ 100%.
Beneficial effect of the present invention is:
Digested piggery wastewater Aerobic treatment method of the present invention, after adding former water to anoxic pond, improves microbial growth and the carbon source needed for denitrification, effectively can improve the biodegradability energy of digested piggery wastewater; Enhance the denitrification of anoxic pond, not only strengthen the removal effect to ammonia nitrogen, and supplement basicity to Aerobic Pond, and maintain the stability of Aerobic Pond pH value; Without the need to supplementing basicity and carbon source again in two-stage AO technology processing system operational process, greatly saved running cost, and the equal Absorbable organic halogens of system water outlet after treatment reaches " livestock and poultry breeding industry pollutant emission standard " (GB18596-2001).
Accompanying drawing explanation
Fig. 1 is digested piggery wastewater Aerobic treatment method schematic flow sheet of the present invention.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with the embodiment of the present invention, do to describe clearly and completely further to technical scheme of the present invention.It should be noted that, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Digested piggery wastewater Aerobic treatment method of the present invention, comprises two-stage AO art breading digested piggery wastewater; In the anoxic pond of two-stage AO technique, add the pig farm Yuan Shui without Anaerobic Digestion, the mass percentage of interpolation is 20% ~ 40%, can effectively improve piggery wastewater anaerobic digestion performance; Described two-stage AO process parameter control is: hydraulic detention time (HRT): 1 ~ 2d; Water inlet volumetric loading: 0.5 ~ 1.0kgCOD/ (m
3d); Sludge concentration (MLSS): 2000 ~ 4000mg/L; Sludge loading: 0.08 ~ 0.15kgBOD
5/ kgMLSSd; Aerobic Pond dissolved oxygen: 2 ~ 5mg/L; Dissolved oxygen in anoxic tank: 0.2 ~ 0.5mg/L; Mixed-liquor return mass percentage is: 100% ~ 200%; Sludge reflux mass percentage is: 50% ~ 100%.
As shown in Figure 1, Process for Treatment of Swine Wastewater process of the present invention, comprising:
1) first, piggery wastewater processes through waste water pretreatment system, then enters into anaerobic reaction system;
2) through anaerobic reaction system waste water out through two-stage AO art breading, enter dephosphorization system; Wherein, in the anoxic pond of two-stage AO technique, the former water after waste water pretreatment system process is all filled into;
3) by the waste water after dephosphorization system process through settling tank precipitate after, qualified water discharge; A mud part in settling tank is back in the anoxic pond of AO technique, and remainder mud discharges system.
In order to verify digested piggery wastewater Aerobic treatment method treatment effect of the present invention, following test method is now adopted to test:
The long-term livestock on hand sow in certain pig farm 2030, delivers 40000 market pigs year for sale, and every day, waste discharge was 150 ~ 200m
3/ d.Waste water through effectively removing macrobead pollutent after the pre-treatment such as slag and solid-liquid separation, carry out Anaerobic Digestion through anaerobic reactor again and remove majority of organic pollutants, anaerobic effluent is by two-stage AO art breading, and the pig farm Yuan Shui of 20% ~ 40% is added in anoxic pond, two-stage AO process operation operating mode is: hydraulic detention time (HRT): 1 ~ 2d; Water inlet volumetric loading: 0.5 ~ 1.0kgCOD/ (m
3d); Sludge concentration (MLSS): 2000 ~ 4000mg/L; Sludge loading: 0.08 ~ 0.15kgBOD
5/ kgMLSSd; Aerobic Pond dissolved oxygen: 2 ~ 5mg/L; Dissolved oxygen in anoxic tank: 0.2 ~ 0.5mg/L; Mixed-liquor return mass percentage is: 100% ~ 200% mass percentage is; Sludge reflux: 50% ~ 100%.
Outlet effect is as shown in table 1, all can reach " livestock and poultry breeding industry pollutant emission standard " (GB18596-2001).
Table 1 digested piggery wastewater aerobic treatment effect
| Project | CO/(mg/L) | BOD/(mg/L) | NH 3-N/(mg/L) | TN/(mg/L) | PH value | SS(mg/L) |
| Piggery wastewater | 4895～10520 | 3512～5124 | 502～708 | 814～1257 | 7.1～7.8 | 5021～8320 |
| Anaerobic digestion solution | 584～1124 | 221～316 | 540～831 | 921～1263 | 6.4～7.3 | 543～743 |
| System water outlet | 254～301 | 50～67 | 34～58 | 72～90 | 7.0～7.6 | 41～67 |
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (3)
1. a digested piggery wastewater Aerobic treatment method, is characterized in that, comprises two-stage AO art breading digested piggery wastewater; In the anoxic pond of two-stage AO technique, add the pig farm Yuan Shui without Anaerobic Digestion.
2. digested piggery wastewater Aerobic treatment method according to claim 1, is characterized in that, the mass percentage that the former water in described pig farm adds is 20% ~ 40%.
3. digested piggery wastewater Aerobic treatment method according to claim 1, is characterized in that, described two-stage AO process parameter control is: hydraulic detention time (HRT): 1 ~ 2d; Water inlet volumetric loading: 0.5 ~ 1.0kgCOD/ (m
3d); Sludge concentration (MLSS): 2000 ~ 4000mg/L; Sludge loading: 0.08 ~ 0.15kgBOD
5/ kgMLSSd; Aerobic Pond dissolved oxygen: 2 ~ 5mg/L; Dissolved oxygen in anoxic tank: 0.2 ~ 0.5mg/L; Mixed-liquor return mass percentage is: 100% ~ 200%; Sludge reflux mass percentage is: 50% ~ 100%.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107265776A (en) * | 2017-08-02 | 2017-10-20 | 北京创迪环境科技有限公司 | A kind of culturing wastewater processing system and method |
| CN110066016A (en) * | 2019-03-21 | 2019-07-30 | 河南恒天久大实业有限公司 | Biodiesel wastewater and high ammonia nitrogen biogas slurry combination treatment method |
| 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 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10249386A (en) * | 1997-03-13 | 1998-09-22 | Ngk Insulators Ltd | Treatment of nitrogen-containing waste water |
| CN101229944A (en) * | 2007-08-28 | 2008-07-30 | 北京大学 | Intensified biological treatment method for high strength ammonia wastewater |
| CN102616982A (en) * | 2012-03-12 | 2012-08-01 | 浙江大学 | High-efficiency and low-consumption standard-reaching treatment method for wastewater from scale piggery raising |
| CN203238138U (en) * | 2013-03-27 | 2013-10-16 | 广东温氏食品集团股份有限公司 | Swine wastewater treatment equipment |
| CN104230097A (en) * | 2014-08-21 | 2014-12-24 | 广州嘉康环保技术有限公司 | Breeding sewage treatment method |
| CN104944679A (en) * | 2015-05-19 | 2015-09-30 | 江苏省嘉庆水务发展有限公司 | Treatment method of dispersed high-ammonia-nitrogen sewage |
-
2015
- 2015-11-06 CN CN201510755993.8A patent/CN105384248A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10249386A (en) * | 1997-03-13 | 1998-09-22 | Ngk Insulators Ltd | Treatment of nitrogen-containing waste water |
| CN101229944A (en) * | 2007-08-28 | 2008-07-30 | 北京大学 | Intensified biological treatment method for high strength ammonia wastewater |
| CN102616982A (en) * | 2012-03-12 | 2012-08-01 | 浙江大学 | High-efficiency and low-consumption standard-reaching treatment method for wastewater from scale piggery raising |
| CN203238138U (en) * | 2013-03-27 | 2013-10-16 | 广东温氏食品集团股份有限公司 | Swine wastewater treatment equipment |
| CN104230097A (en) * | 2014-08-21 | 2014-12-24 | 广州嘉康环保技术有限公司 | Breeding sewage treatment method |
| CN104944679A (en) * | 2015-05-19 | 2015-09-30 | 江苏省嘉庆水务发展有限公司 | Treatment method of dispersed high-ammonia-nitrogen sewage |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107265776A (en) * | 2017-08-02 | 2017-10-20 | 北京创迪环境科技有限公司 | A kind of culturing wastewater processing system and method |
| CN110066016A (en) * | 2019-03-21 | 2019-07-30 | 河南恒天久大实业有限公司 | Biodiesel wastewater and high ammonia nitrogen biogas slurry combination treatment method |
| 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 |
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Address after: 527400 9 East Causeway North Road, Xinxing County new town, Yunfu, Guangdong Applicant after: Winson food group Limited by Share Ltd Address before: 527400 9 East Causeway North Road, Xinxing County new town, Yunfu, Guangdong Applicant before: Guangdong Wens Foodstuff Group Co., Ltd. |
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Application publication date: 20160309 |
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