CN100484891C - Integrative anaerobic-aerobic circulation biological method for treating organic wastewater - Google Patents
Integrative anaerobic-aerobic circulation biological method for treating organic wastewater Download PDFInfo
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Abstract
This invention relates to an integrated cyclic anaerobic-aerobic method for treating organic wastewater. This invention provides a more efficient and economic integrated cyclic anaerobic-aerobic method for treating high-concentration organic wastewater. The method comprises: passing raw water through an adjustment pool into an anaerobic pool and an aerobic pool, stirring in the anaerobic pool by a stirrer, biologically degrading in the two pools, filtering the exit water from the anaerobic pool, introducing into the entrance of the aerobic pool through a constant flow pump, discharging the sludge from the bottom, controlling the flow rate at 0.01-1000 mL/min and a stopping time of 12-144 h by the computer-powered constant flow pump, controlling the cyclic period of the reactor at 1-8 h so that the wastewater is circulated in the two reactors, and discharging when qualified.
Description
Technical field
The present invention relates to a kind of processing of waste water, especially relate to a kind of method of high concentrated organic wastewater being carried out a biological disposal upon with anaerobic-aerobic circular integration technology.
Background technology
Along with the fast development of industrial technology, the high concentrated organic wastewater of industries such as printing and dyeing, chemical industry, food, papermaking becomes sewage treatment area and needs one of difficult problem of solution badly.The high concentrated organic wastewater treatment technology mainly contains physics method, chemical method and biological process etc. both at home and abroad at present, and wherein most widely used general, technical dominant method is a biological treatment.Highly difficult in recent years organic waste water biologic treating technique turns to the anaerobic-aerobic combination treatment method by the single anaerobic process of tradition, aerobic method, as anaerobic-aerobic method (A/O method), anaerobism-anoxic-aerobic method (A/A/O method) etc.By the anaerobism that adopts multistage multistage, aerobic combination process, finish biological treatment to high concentrated organic wastewater.But there are shortcomings such as surplus sludge volume is big, energy consumption is high, floor space is big, working cost height.And anerobe requires harsh to envrionment conditions, and to the bad adaptability of environment, when organic loading was too high in the water inlet, the acidication product produced accumulation, caused water body basicity to reduce, and the anerobe activity also is suppressed.Simultaneously, thread fungus breeds in a large number, causes the normal growth of cotton-shaped bacterium to be suppressed, the microbial population unbalance of structure, and microorganism active and quantity descend, sludge loss, effluent quality worsens, and has increased the weight of the burden of follow-up aerobic treatment.
Patent publication No. is that the application for a patent for invention of CN1422817 has proposed the anaerobism-oxygen-aerobic integratedization sewage water treatment method of holding concurrently, by three conversion zones are set in single reaction equipment: anaerobic zone, aerobic area, aerobic zone, form three kinds of living things systems, that utilizes aerobic zone realizes waterpower circulation and mud circulation to aerodynamic force, reduces acidifying in the anaerobic pond.This method equipment used cost of investment height, parameter control difficulty is big in the operating process.
Patent publication No. is that the application for a patent for invention of CN1429780 has proposed a kind of sewage treatment technique, change traditional large-scale aeration tank into a plurality of small-sized reaction tanks, change the sewage disposal path, processing by multistage multistage, reach sewage drainage standard, but this process engineering investment is big, running cost is higher.Patent publication No. is that the application for a patent for invention of CN1413926 has proposed a kind ofly to utilize microbiological anaerobic-aerobic and be satiated with food-sewage treatment process of good air hunger, anaerobism or little oxygen rapid absorption of hungry double stimuli, mix by anaerobism or the contact of little oxygen, short-time aeration, the anaerobism water outlet fully contacts with good air hunger mud, aeration, mixing, supernatant liquor is discharged after the sedimentation, mud after the separation makes it for starvation under aerobic condition, repeats to contact with raw waste water again.But aerobic activated sludge is under starvation, and thread fungus breeds in a large number, easily causes sludge bulking.
Patent publication No. is that the application for a patent for invention of CN1271692A has proposed a kind of process for treating high-concentration sewage, by being set behind anaerobic reation pool, sewage backflow irritates, part of contaminated water enters the aerobe selector switch and aerobic degradation is carried out in the aeration tank in reflux irritating, another part is back in the anaerobic pond, though but this method has improved the basicity of water in the anaerobic pond, but exist surplus sludge volume big, energy consumption height, problem such as floor space is big.
Although above-mentioned patent application improves biological treatment and innovates, have all that efficient is not high, occupation area of equipment is big, not enough economic dispatch problem.
Summary of the invention
The objective of the invention is provides a kind of anaerobic-aerobic circular integration bioremediation more efficient, economic to high concentrated organic wastewater at having now existing efficient is not high in the high concentrated organic wastewater processing, occupation area of equipment big, not enough economic dispatch problem.
Technical process of the present invention is:
1) former water enters anaerobic pond and Aerobic Pond simultaneously behind equalizing tank, stirs at the built-in agitator of anaerobic pond, and waste water is respectively through anaerobic pond and Aerobic Pond biological degradation;
2) water outlet of anaerobic pond clear liquid after filtering enters Aerobic Pond inlet, bottom spoil disposal by constant flow pump continuously;
3) water outlet of Aerobic Pond clear liquid after filtering is circulated to anaerobic pond inlet, bottom spoil disposal by constant flow pump continuously;
4) according to waste water quality type, the processing water yield and organic loading, by computer constant flow pump Control Circulation flow velocity is that 0.01～1000ml/min and hydraulic detention time are 12～144h, and the loop cycle of controlling reactor (required time of all water yield circulation primary in the reaction tank) is at 1～8h, make waste water continuous constant current in two reactors circulate water outlet back up to standard discharging.
Agitator in the anaerobic pond can adopt the heating magnetic stirring apparatus, and controlled temperature is 15～35 ℃, and stirring velocity is 60～150r/min.
Aerobic Pond is to move under 15～35 ℃ of conditions in temperature, and the core aeration head is equipped with in Aerobic Pond inside, by the air compressor blast aeration, is 0.5～5L/min with spinner-type flowmeter control aeration rate, and dissolved oxygen is DO 〉=2.0mg/L in the Aerobic Pond.
Sewage carries out continuous round-robin purpose and mainly contains two between anaerobic pond and Aerobic Pond:
1) the acidication product increases the basicity in the anaerobic pond simultaneously to the inhibition of anerobe in the minimizing anaerobic pond, reduces the consumption of alkali.The organic acid content height can cause the sludge bulking of thread fungus property in the water, reduces organic acid concentration in the water in the Aerobic Pond by hydrolyzed solution is circulated to, and has controlled hyphomycetic growth, thereby has effectively controlled sludge bulking.
2) the hydrolysis intermediate product in the anaerobic pond is circulated to and is easy in the Aerobic Pond be decomposed by aerobic bacteria, finishes organic permineralization.Make by circulation that isolating two reaction tanks that contain the different population microorganism have the function of simultaneously a certain pollutent being degraded on the space, play mutual reinforcement, the effect of mutually promoting.Two kinds of biotic populations are in the suitable water surrounding separately, can bring into play the function of two kinds of biotic populations self to greatest extent, improve the efficient of whole biodegradation process.
Compare with the multistage dirty water living creature processing technique of traditional high concentrated organic wastewater, the present invention has that floor space is little, cost of investment and working cost is low, the advantage that is fit to handle organic loading height, no excess sludge or do not have the excess sludge generation substantially.Can be applicable to make wine, the processing of high density organic waste water such as food, printing and dyeing and petrochemical complex.
Description of drawings
Fig. 1 adopts activated sludge process anaerobic-aerobic circular integration process unit and schema for the embodiment of the invention.
Fig. 2 adopts biomembrance process anaerobic-aerobic circular integration process unit and schema for the embodiment of the invention.
Embodiment
Sewage treatment process involved in the present invention is divided into activated sludge process anaerobic-aerobic circular integration sewage treatment process I (Fig. 1) and biological membrane anaerobic-aerobic circular integration sewage treatment process II (Fig. 2) from the microorganism existence form.
The invention will be further described with comparative example by the following examples.
Activated sludge process anaerobic-aerobic circular integration sewage treatment process I:
Example I-1
Waste water type: starch wastewater.At first respectively the starch wastewater of equal volume is poured in anaerobic pond and the Aerobic Pond, open constant flow pump simultaneously, according to the water inlet organic loading, determine hydraulic detention time and circulation velocity (1.1～5.7ml/min), make waste water continuously constant current circulation between anaerobic pond and Aerobic Pond.Measure indexs such as water body starch, COD, pH value, temperature at interval interior each pond of different time.
Comparative Example I-1
Waste water type: starch wastewater.At first will pour into respectively in anaerobic pond and the Aerobic Pond with the starch wastewater of equal volume in the example I-1, anaerobism is identical with hydraulic detention time in the example I-1 with the independent aerobic degradation time separately, measures indexs such as water body starch, COD, pH value, temperature at interval interior anaerobic pond of different time and the Aerobic Pond respectively.
Example I-2
Waste water type: terephthalic acid (PTA) waste water.At first respectively the PTA waste water of equal volume is poured in anaerobic pond and the Aerobic Pond, open constant flow pump simultaneously, according to the water inlet organic loading, determine hydraulic detention time and circulation velocity (5～15ml/min), make waste water continuously constant current circulation between anaerobic pond and Aerobic Pond.Measure indexs such as water body PTA, COD, pH value, temperature at interval interior each pond of different time.
Comparative Example I-2
Waste water type: PTA waste water.At first will pour into respectively in anaerobic pond and the Aerobic Pond with the PTA waste water of equal volume in the example I-2, anaerobism is identical with hydraulic detention time in the example I-2 with the independent aerobic degradation time separately, measures indexs such as water body PTA, COD, pH value, temperature at interval interior anaerobic pond of different time and the Aerobic Pond respectively.
Example I-3
Waste water type: polyoxyethylene glycol (PEG) waste water.At first respectively the PEG waste water of equal volume is poured in anaerobic pond and the Aerobic Pond, open constant flow pump simultaneously, according to the water inlet organic loading, determine hydraulic detention time and circulation velocity (5～15ml/min), make waste water continuously constant current circulation between anaerobic pond and Aerobic Pond.Measure indexs such as water body PEG, COD, pH value, temperature at interval interior each pond of different time.
Comparative Example I-3
Waste water type: PEG waste water.At first will pour into respectively in anaerobic pond and the Aerobic Pond with the PEG waste water of equal volume in the example I-3, anaerobism is identical with hydraulic detention time in the example I-3 with the independent aerobic degradation time separately, measures indexs such as water body PEG, COD, pH value, temperature at interval interior anaerobic pond of different time and the Aerobic Pond respectively.
Embodiment 1-4
Waste water type: reactive brilliant bule KNR waste water.At first respectively the reactive brilliant bule waste water of equal volume is poured in anaerobic pond and the Aerobic Pond, open constant flow pump simultaneously, according to the water inlet organic loading, determine hydraulic detention time and circulation velocity (5～15ml/min), make waste water continuously constant current circulation between anaerobic pond and Aerobic Pond.Measure indexs such as water body chroma, COD, pH value, temperature at interval interior each pond of different time.
Comparative Example I-4
Waste water type: reactive brilliant bule waste water.At first will pour into respectively in anaerobic pond and the Aerobic Pond with the reactive brilliant bule waste water of equal volume in the example I-4, anaerobism is identical with hydraulic detention time among the embodiment 1-4 with the independent aerobic degradation time separately, measures indexs such as water body chroma, COD, pH value, temperature at interval interior anaerobic pond of different time and the Aerobic Pond respectively.
The treatment effect of example I-1～I-4 waste water sees Table 1.
Table 1
Biomembrance process anaerobic-aerobic circular integration sewage treatment process II:
Example II-1
Waste water type: starch wastewater.At first respectively the starch wastewater of equal volume is poured in anaerobic pond and the Aerobic Pond, open constant flow pump simultaneously, according to the water inlet organic loading, determine hydraulic detention time and circulation velocity (0～15ml/min), make waste water continuously constant current circulation between anaerobic pond and Aerobic Pond.Measure indexs such as water body starch, COD, pH value, temperature at interval interior each pond of different time.
Comparative Example I I-1
Waste water type: starch wastewater.At first will pour into respectively in anaerobic pond and the Aerobic Pond with the starch wastewater of equal volume in the example II-1, anaerobism is identical with hydraulic detention time in the example II-1 with the independent aerobic degradation time separately, measures indexs such as water body starch, COD, pH value, temperature at interval interior anaerobic pond of different time and the Aerobic Pond respectively.
Example II-2
The waste water type: 2,4 dichloro phenol (2,4-DCP) waste water.At first respectively with 2 of equal volume, 4-DCP waste water is poured in anaerobic pond and the Aerobic Pond, opens constant flow pump simultaneously, according to the water inlet organic loading, determine hydraulic detention time and circulation velocity (5～15ml/min), make waste water continuously constant current circulation between anaerobic pond and Aerobic Pond.Measure water body 2 at interval interior each pond of different time, indexs such as 4-DCP, COD, pH value, temperature.
Comparative Example I I-2
The waste water type: 2,4-DCP waste water.At first will with 2 of equal volume in the example I-2,4-DCP waste water is poured into respectively in anaerobic pond and the Aerobic Pond, anaerobism is identical with hydraulic detention time in the example I-2 with the independent aerobic degradation time separately, measure water body 2 at interval interior anaerobic pond of different time and the Aerobic Pond respectively, indexs such as 4-DCP, COD, pH value, temperature.
Example II-3
Waste water type: reactive brilliant bule KNR waste water.At first respectively the reactive brilliant bule waste water of equal volume is poured in anaerobic pond and the Aerobic Pond, open constant flow pump simultaneously, according to the water inlet organic loading, determine hydraulic detention time and circulation velocity (5～15ml/min), make waste water continuously constant current circulation between anaerobic pond and Aerobic Pond.Measure indexs such as water body chroma, COD, pH value, temperature at interval interior each pond of different time.
Comparative Example I I-3
Waste water type: reactive brilliant bule waste water.At first will pour into respectively in anaerobic pond and the Aerobic Pond with the reactive brilliant bule waste water of equal volume in the example II-3, anaerobism is identical with hydraulic detention time in the example II-3 with the independent aerobic degradation time separately, measures indexs such as water body chroma, COD, pH value, temperature at interval interior anaerobic pond of different time and the Aerobic Pond respectively.
The treatment effect of example II-1～II-3 waste water sees Table 2.
Table 2
Below provide the code name of each several part among Fig. 1 and 2.
1-anaerobism pond; 2-Aerobic Pond; 3,4-constant flow pump; 5-air compressor; 6-core aeration head; 7-gas Flowmeter; 8,9-water collector; 10-micro computer time controller; 11,12-mud discharging mouth; 13-thermometer; 14-perseverance The temperature control case.
Claims (5)
1. organic waste water anaerobic-aerobic circular integration bioremediation is characterized in that technical process is:
1) former water enters anaerobic pond and Aerobic Pond simultaneously behind equalizing tank, stir at the built-in agitator of anaerobic pond, waste water is respectively through anaerobic pond and Aerobic Pond biological degradation, and the temperature in the anaerobic pond is 15～35 ℃, the temperature of Aerobic Pond is 15～35 ℃, and dissolved oxygen is DO 〉=2.0mg/L in the Aerobic Pond;
2) water outlet of anaerobic pond clear liquid after filtering enters Aerobic Pond inlet, bottom spoil disposal by constant flow pump continuously;
3) water outlet of Aerobic Pond clear liquid after filtering is circulated to anaerobic pond inlet, bottom spoil disposal by constant flow pump continuously;
4) according to waste water quality type, the processing water yield and organic loading, by constant flow pump Control Circulation flow velocity is that 0.01～1000ml/min and hydraulic detention time are 12～144h, and the loop cycle of controlling reactor is at 1～8h, make waste water continuous constant current in two reactors circulate water outlet back up to standard discharging.
2. organic waste water anaerobic-aerobic circular integration bioremediation as claimed in claim 1 is characterized in that the agitator in the anaerobic pond is the heating magnetic stirring apparatus.
3. organic waste water anaerobic-aerobic circular integration bioremediation as claimed in claim 1, the speed that it is characterized in that described stirring is 60～150r/min.
4. organic waste water anaerobic-aerobic circular integration bioremediation as claimed in claim 1 is characterized in that described Aerobic Pond inside is equipped with the core aeration head, by the air compressor blast aeration.
5. organic waste water anaerobic-aerobic circular integration bioremediation as claimed in claim 4 is characterized in that described aeration rate is 0.5～5L/min.
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| CN102190412B (en) * | 2011-05-23 | 2013-08-14 | 江苏商达水务有限公司 | Method for recycling textile dyeing and finishing wastewater |
| CN102505025B (en) * | 2011-12-02 | 2014-09-24 | 厦门大学 | Method for synthesizing polyhydroxyalkanoate by using residual sludge broth as substrate |
| CN102633412B (en) * | 2012-05-04 | 2014-03-26 | 厦门大学 | Dynamic membrane anaerobic-aerobic circular integration sewage treatment method |
| CN103112950A (en) * | 2013-03-08 | 2013-05-22 | 厦门大学 | Dynamic-membrane anaerobic-aerobic integrated online backwash treatment method for printing and dyeing wastewater |
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| CN1710193A (en) * | 2005-06-09 | 2005-12-21 | 西安交通大学 | Process for realizing waste-water zero-discharge of papermaking from waste paper by anaerobic-aerobic treatment |
| CN2760018Y (en) * | 2004-10-27 | 2006-02-22 | 上海大学 | Dual external circulation biological fluidized bed effluent treatment plant |
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| CN2760018Y (en) * | 2004-10-27 | 2006-02-22 | 上海大学 | Dual external circulation biological fluidized bed effluent treatment plant |
| CN1710193A (en) * | 2005-06-09 | 2005-12-21 | 西安交通大学 | Process for realizing waste-water zero-discharge of papermaking from waste paper by anaerobic-aerobic treatment |
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Assignee: Zhangzhou Xinzhanwang Chemical Co., Ltd. Assignor: Xiamen University Contract record no.: 2012350000065 Denomination of invention: Integrative anaerobic - aerobic circulation biological method for treating organic wastewater Granted publication date: 20090506 License type: Common License Open date: 20070509 Record date: 20120619 |
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