CN109502926A - A kind of processing method of high ammonia nitrogen agricultural effluent - Google Patents
A kind of processing method of high ammonia nitrogen agricultural effluent Download PDFInfo
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- CN109502926A CN109502926A CN201910002152.8A CN201910002152A CN109502926A CN 109502926 A CN109502926 A CN 109502926A CN 201910002152 A CN201910002152 A CN 201910002152A CN 109502926 A CN109502926 A CN 109502926A
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- ammonia nitrogen
- agricultural effluent
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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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- 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
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
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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)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention discloses a kind of processing methods of high ammonia nitrogen agricultural effluent, comprising the following steps: (1) high ammonia nitrogen agricultural effluent is passed through anaerobic organism membrane cisterna and carries out Anaerobic Treatment；(2) it will be passed through in aerobic contact oxidation pond by the waste water of step (1) processing and carry out Aerobic Process for Treatment；(3) it will be passed through by the waste water of step (2) processing into sedimentation basin and carry out physics sedimentation, and the wastewater supernatant fluid siphon after physics is settled is into catch basin；(4) waste water in catch basin is sent into reactive tank, is added phosphoric acid, soluble calcium salt and soluble magnesium salt in reactive tank, adjustings pH is 7.5-9.0, and Ca in control system2+: Mg2+: PO4 3‑: NH4 +Molar ratio be 6-10:3.6-6:1:6, stir evenly, after reacting 1-3h, be passed through final deposition pool, processing is completed.Technique of the invention denitrogenates the agricultural effluent that dephosphorization effect is obvious, after process of the invention for agricultural effluent, can reach " urban wastewater treatment firm pollutant emission standard " (GB18918-2002) level-one A standard.
Description
Technical field
The present invention relates to agricultural effluent processing technology field, in particular to a kind of processing method of high ammonia nitrogen agricultural effluent.
Background technique
Agricultural effluent includes domestic sewage in rural areas, scale animal and poultry cultivation waste water and agricultural run-off etc..In agricultural effluent
Contain a large amount of pathogen, suspended matter, chemical fertilizer, pesticide, undissolved solid object and salinity etc..Pesticide, pathogen in waste water
Deng meeting polluted drinking water source, it is detrimental to health, causes a wide range of soil pollution；And the nutrients such as nitrogen, phosphorus in waste water into
Entering river, lake then will lead to water eutrophication, the serious balance for destroying the ecosystem.Therefore, agricultural effluent has to pass through
It can outlet either Treated sewage reusing after stringent processing.In the prior art, it is usually for the processing method of agricultural effluent
It is handled by anaerobic-aerobic group technology.Agricultural effluent load is reduced by Anaerobic Treatment, recycles aerobic technical office
Manage sewage.
Such as a kind of technique of microkinetic bi-membrane method biological device processing country sewage is disclosed in CN103058453A, it is dirty
Water initially enters anaerobic organism membrane cisterna, using hydrolysis and acid-producing microorganisms, by water solid, macromolecular and be not easy biological drop
The organic matter degradation of solution；Sewage enters simple aerobe membrane cisterna using elevator pump；It is good under the driving of motor or air
The underdrive device band turn piece of oxygen biology membrane cisterna is slowly rotated, be attached to biomembrane on rotor alternately with dirt
Water and air contact, is adsorbed and is aoxidized to the organic matter in sewage, sewage is made to be purified.The technique is in sewage
The removal of COD and suspended matter is more effective, however then unobvious for the nitrogen phosphorus removal effect in agricultural effluent.Especially for
The agricultural effluent of high ammonia-nitrogen content, tends not to qualified discharge.
A kind of processing unit and its processing method suitable for high ammonia nitrogen agricultural effluent is disclosed in CN103395937B,
Including anaerobism, electrolysis, aerobic, denitrification, reflux, dephosphorization.The invention be compared to traditional anaerobic-aerobic disposal it
Between be equipped with cylindrical electrolytic cell, it is obvious to the pollutional load buffer function of agricultural effluent, can not only reduce in waste water COD and
Nitrogen and phosphorus content, moreover it is possible to effectively remove the heavy metal carried in waste water, poisonous and harmful substance and a large amount of pathogen etc. to microorganism
The substance that biochemical action is affected reduces subsequent processing load.But method one side process flow is complicated, on the other hand due to
There is the process of electrolysis in the process, energy consumption is higher, and universality is poor.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of processing methods of high ammonia nitrogen agricultural effluent, can effectively remove
Nitrogen, phosphorus in sewage etc. seek oxygen element, adaptable.
In order to solve the above-mentioned technical problem, the technical solution of the present invention is as follows:
A kind of processing method of high ammonia nitrogen agricultural effluent, comprising the following steps:
(1) high ammonia nitrogen agricultural effluent is passed through anaerobic organism membrane cisterna and carries out Anaerobic Treatment；
(2) it will be passed through in aerobic contact oxidation pond by the waste water of step (1) processing and carry out Aerobic Process for Treatment；
(3) it will be passed through by the waste water of step (2) processing into sedimentation basin and carry out physics sedimentation, and after physics is settled
Wastewater supernatant fluid siphon is into catch basin；
(4) waste water in catch basin is sent into reactive tank, phosphoric acid, soluble calcium salt and solubility is added in reactive tank
Magnesium salts, adjusting pH are 7.5-9.0, and Ca in control system2+: Mg2+: PO4 3-: NH4 +Molar ratio be 6-10:3.6-6:1:6, stir
It mixes uniformly, after reacting 1-3h, is passed through final deposition pool, processing is completed.
Preferably, in order to further increase to nitrogen, the phosphorus treatment effect in agricultural effluent, Ca in the step (4)2+:
Mg2+: PO4 3-: NH4 +Molar ratio be 7.5-8.5:4.5-5.1:1:6, above-mentioned molar ratio is the 1.5-1.7 according to theoretical times of amount
It adds again.
More preferably, Ca in the step (4)2+: Mg2+: PO4 3-: NH4 +Molar ratio be 8:5.1:1:6.At this point, phosphorus
The molar ratio of acid, soluble calcium salt and soluble magnesium salt is 1.7 times of theoretical times of amount, the experimental results showed that, the multiplying power condition
Under it is best for nitrogen, the phosphorus treatment effect in agricultural effluent.
Preferably, adjusting pH in the step (4) is 8.5-9.0.
Preferably, in the step (4) after mixing evenly, being also added with flocculant.
Preferably, the flocculant is organic flocculant and/or Double-machine flocculant.
Preferably, sewage residence time in final deposition pool is 6-12h.
Mechanism of the invention is: phosphoric acid, soluble calcium salt and soluble magnesium salt being added in waste water, is provided by phosphoric acid
PO4 3-, soluble calcium salt offer Ca2+, soluble magnesium salt offer Mg2+, and control system is 7.5-9.0, nitrogen in waste water and
Phosphorus is precipitated with following reactions and is removed:
Mg2++NH4 ++PO4 3-+6H2O→MgNH4PO4·6H2O↓
5Ca2++OH-+3PO4 3-→Ca5(PO4)3OH↓
It should be noted that key point of the invention is that on the one hand choosing phosphoric acid substitutes traditional phosphate offer
PO4 3-, it is added to phosphoric acid, soluble calcium salt and soluble magnesium salt together in agricultural effluent to be processed.By
A large amount of realizations of inventor, above-mentioned process combination achieve unexpected effect for the processing of high ammonia nitrogen agricultural effluent.
The beneficial effects of the present invention are:
(1) technique of the invention denitrogenates that dephosphorization effect is obvious for agricultural effluent, after process of the invention
Agricultural effluent, can reach " urban wastewater treatment firm pollutant emission standard " (GB18918-2002) level-one A standard, it is significantly high
In sewage treatment Passing Criteria " urban wastewater treatment firm pollutant emission standard " (GB18918-2002) the level-one B of national regulation
Standard.
(2) present invention process process is short, easy to operate, has stronger application value.
(3) it first passes through anaerobic and aerobic in the prior art for high ammonia nitrogen agricultural effluent in the present invention to handle, removing one
After the nitrogen phosphorus of part, passes through addition chemical reagent again for that intractable a part of nitrogen phosphorus and handle, treatment effeciency is high, processing
Effect is good, while advantageously reducing the input amount of chemical reagent, reduces processing cost.
Specific embodiment
Below with reference to embodiment, specific embodiments of the present invention will be further explained.It should be noted that right
It is used to help understand the present invention in the explanation of these embodiments, but and does not constitute a limitation of the invention.In addition, being retouched below
Technical characteristic involved in each embodiment of the present invention stated can be combined with each other as long as they do not conflict with each other.
Embodiment 1
The present embodiment is handled rural sewage using following methods:
(1) it takes high ammonia nitrogen agricultural effluent to be passed through in anaerobic organism membrane cisterna and stop 4h, Anaerobic Treatment is carried out to it；
(2) it will be passed through in aerobic contact oxidation pond by the waste water of step (1) processing and be passed through pure oxygen and carry out aeration 6h, it is right
It carries out Aerobic Process for Treatment；
(3) it will be passed through by the waste water of step (2) processing into sedimentation basin and carry out physics sedimentation 6h, after physics settles
Wastewater supernatant fluid is by siphon into catch basin；
Waste water in catch basin is sent into reactive tank, phosphoric acid, calcium chloride and magnesium chloride are added in reactive tank, by adding
Adding calcium oxide to adjust wastewater pH in reactive tank is 7.5, and Ca in control system2+: Mg2+: PO4 3-: NH4 +Molar ratio be 6:3.6:
1:6 allows it to react 1.5h while stirring, and then passes to final deposition pool, stops 12h, and processing is completed.
Embodiment 2
The present embodiment is handled rural sewage using following methods:
(1) it takes high ammonia nitrogen agricultural effluent to be passed through in anaerobic organism membrane cisterna and stop 4.5h, Anaerobic Treatment is carried out to it；
(2) it will be passed through in aerobic contact oxidation pond by the waste water of step (1) processing and be passed through oxygen-enriched air and be aerated
8h carries out Aerobic Process for Treatment to it；
(3) it will be passed through by the waste water of step (2) processing into sedimentation basin and carry out physics sedimentation 7h, after physics settles
Wastewater supernatant fluid is by siphon into catch basin；
Waste water in catch basin is sent into reactive tank, phosphoric acid, calcium bicarbonate and magnesium chloride are added in reactive tank, passes through
Adding calcium oxide and adjusting wastewater pH in reactive tank is 8.5, and Ca in control system2+: Mg2+: PO4 3-: NH4 +Molar ratio be 10:
6:1:6 allows it to react 1h while stirring, and is added inorganic flocculating agent after stopping stirring, inorganic flocculating agent according to 3.5g/L into
Row addition, then passes to final deposition pool, stops 6h, and processing is completed.
Embodiment 3
The present embodiment is handled rural sewage using following methods:
(1) it takes high ammonia nitrogen agricultural effluent to be passed through in anaerobic organism membrane cisterna and stop 5h, Anaerobic Treatment is carried out to it；
(2) it will be passed through in aerobic contact oxidation pond by the waste water of step (1) processing and be passed through pure oxygen and carry out aeration 6h, it is right
It carries out Aerobic Process for Treatment；
(3) it will be passed through by the waste water of step (2) processing into sedimentation basin and carry out physics sedimentation 8h, after physics settles
Wastewater supernatant fluid is by siphon into catch basin；
Waste water in catch basin is sent into reactive tank, phosphoric acid, calcium dihydrogen phosphate and magnesium chloride are added in reactive tank, is led to
Crossing addition calcium hydroxide and adjusting wastewater pH in reactive tank is 9.0, and Ca in control system2+: Mg2+: PO4 3-: NH4 +Molar ratio be
8:5.1:1:6 allows it to react 3h while stirring, and Double-machine flocculant is added after stopping stirring, Double-machine flocculant is according to 3g/L
It is added, then passes to final deposition pool, stop 10h, processing is completed.
Embodiment 1 to 3 carries out analysis detection to project according to national standard test method, and test result is as shown in table 1
Table 1
| Test item (mg/L) | High ammonia nitrogen agricultural effluent | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| COD | 2105.80 | 137.45 | 152.88 | 147.63 |
| BOD | 533.14 | 74.19 | 65.55 | 61.03 |
| NH3-N | 1211.20 | 52.18 | 46.50 | 53.34 |
| TP | 77.25 | 5.77 | 6.08 | 5.56 |
| SS | 426.33 | 10.45 | 11.62 | 11.79 |
As can be seen from Table I, after technique of the invention is to the processing of high ammonia nitrogen agricultural effluent, the COD of final outflow water,
BOD, NH3-N, TP and SS reach country-level A standard；Particularly, the effect of dephosphorization denitrogenation of the present invention is more significant, place
Water quality after reason is excellent, can be discharged into the closing such as III class function waters of GB3838 surface water, lake, library or semiclosed waters, dilution energy
The purposes such as townscape water and general recycle-water are used as in the lesser river and lake of power.
The embodiments of the present invention are described in detail in conjunction with the embodiments above, but the present invention is not limited to described realities
Apply mode.For a person skilled in the art, in the case where not departing from the principle of the invention and spirit, to these embodiment party
Formula carries out a variety of change, modification, replacement and modification, still falls in protection scope of the present invention.
Claims (7)
1. a kind of processing method of high ammonia nitrogen agricultural effluent, which comprises the following steps:
(1) high ammonia nitrogen agricultural effluent is passed through anaerobic organism membrane cisterna and carries out Anaerobic Treatment；
(2) it will be passed through in aerobic contact oxidation pond by the waste water of step (1) processing and carry out Aerobic Process for Treatment；
(3) it will be passed through by the waste water of step (2) processing into sedimentation basin and carry out physics sedimentation, and the waste water after physics is settled
Supernatant siphon is into catch basin；
(4) waste water in catch basin is sent into reactive tank, phosphoric acid, soluble calcium salt and soluble magnesium is added in reactive tank
Salt, adjusting pH are 7.5-9.0, and Ca in control system2+: Mg2+: PO4 3-: NH4 +Molar ratio be 6-10:3.6-6:1:6, stirring
Uniformly, after reacting 1-3h, it is passed through final deposition pool, processing is completed.
2. a kind of processing method of high ammonia nitrogen agricultural effluent according to claim 1, which is characterized in that the step (4)
Middle Ca2+: Mg2+: PO4 3-: NH4 +Molar ratio be 7.5-8.5:4.5-5.1:1:6.
3. a kind of processing method of high ammonia nitrogen agricultural effluent according to claim 2, which is characterized in that the step (4)
Middle Ca2+: Mg2+: PO4 3-: NH4 +Molar ratio be 8:5.1:1:6.
4. a kind of processing method of high ammonia nitrogen agricultural effluent according to claim 3, which is characterized in that the step (4)
Middle adjusting pH is 8.5-9.0.
5. a kind of processing method of high ammonia nitrogen agricultural effluent according to any one of claims 1 to 4, which is characterized in that institute
It states in step (4) after mixing evenly also added with flocculant.
6. a kind of processing method of high ammonia nitrogen agricultural effluent according to claim 5, which is characterized in that the flocculant is
Organic flocculant or Double-machine flocculant.
7. a kind of processing method of high ammonia nitrogen agricultural effluent according to claim 6, which is characterized in that the sewage is at end
Residence time is 6-12h in heavy pond.
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| CN201910002152.8A CN109502926A (en) | 2019-01-02 | 2019-01-02 | A kind of processing method of high ammonia nitrogen agricultural effluent |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1460648A (en) * | 2003-02-21 | 2003-12-10 | 四川省内江市威士通环保产品厂 | Double-machine flocculant |
| CN102092871A (en) * | 2009-12-14 | 2011-06-15 | 中国科学院城市环境研究所 | Method for reclaiming nitrogen and phosphorus in nitrogen and phosphorus-containing wastewater by using bittern as magnesium source |
| CN102765834A (en) * | 2012-08-13 | 2012-11-07 | 铜陵化学工业集团有限公司 | Method for treating industrial nitrogenous waste water through chemical precipitation method |
| CN205933395U (en) * | 2016-08-11 | 2017-02-08 | 张晓强 | Biological fungus aeration sewage treatment system of environmental protection integration |
| US20180079671A1 (en) * | 2016-09-21 | 2018-03-22 | Thomas Wang | Ecological biowater purification system |
-
2019
- 2019-01-02 CN CN201910002152.8A patent/CN109502926A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1460648A (en) * | 2003-02-21 | 2003-12-10 | 四川省内江市威士通环保产品厂 | Double-machine flocculant |
| CN102092871A (en) * | 2009-12-14 | 2011-06-15 | 中国科学院城市环境研究所 | Method for reclaiming nitrogen and phosphorus in nitrogen and phosphorus-containing wastewater by using bittern as magnesium source |
| CN102765834A (en) * | 2012-08-13 | 2012-11-07 | 铜陵化学工业集团有限公司 | Method for treating industrial nitrogenous waste water through chemical precipitation method |
| CN205933395U (en) * | 2016-08-11 | 2017-02-08 | 张晓强 | Biological fungus aeration sewage treatment system of environmental protection integration |
| US20180079671A1 (en) * | 2016-09-21 | 2018-03-22 | Thomas Wang | Ecological biowater purification system |
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Application publication date: 20190322 |