CN105271604A - Method for removing PPCPs in water body - Google Patents
Method for removing PPCPs in water body Download PDFInfo
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- CN105271604A CN105271604A CN201410325851.3A CN201410325851A CN105271604A CN 105271604 A CN105271604 A CN 105271604A CN 201410325851 A CN201410325851 A CN 201410325851A CN 105271604 A CN105271604 A CN 105271604A
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- ppcps
- water
- former water
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- active particle
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Abstract
The invention discloses a method for removing PPCPs in a water body. The method comprises the following steps: step 1, carrying out irradiation treatment on raw water containing PPCPs by using an electron accelerator, wherein a radiation dose is in range of 0.5 to 10.0 kGy, irradiation electron beams and water molecules in the raw water undergo Compton interaction to produce a great number of active particles, the active particles and PPCPs in the raw water undergo a chemical reaction, a part of the PPCPs are thoroughly decomposed and mineralized, and the rest PPCPs are degraded into intermediates with good biochemical degradation performance; and step 2, allowing the raw water having undergone irradiation treatment in the step 1 to enter a biochemical degradation pool for further degradation, wherein the intermediates of the PPCPs are thoroughly degraded, so PPCPs in the raw water are removed. The method provided by the invention is highly efficient, simple and economic and has a high PPCPs removal rate.
Description
Technical field
The present invention relates to a kind of rumbatron that utilizes and irradiation removes PPCPs in water body again method in conjunction with biological treatment is carried out to water body, belong to environmental protection technical field.
Background technology
PPCPs is the abbreviation of medicine and personal-care supplies, be the pollutent that a large class is extensively present in physical environment, find at present mainly to comprise synthetic musk material, photographic developer, microbiotic, oestrogenic hormon, anti-inflammation analgesic, disinfecting and sterilizing machine etc. in PPCPs kind; Its main source importing environment is: veterinary drug, agricultural chemicals, medical drugs and makeup; This pollutant can be difficult to biological degradation at occurring in nature stable existence, work the mischief eventually through biologic chain enrichment, and this pollutant is also being introduced in environment continuously removed while, be otherwise known as " spurious persistence " pollutent, therefore, how removing the PPCPs in degraded water body efficiently, is the urgent problem of present efforts at environmental protection.
Existing in the treatment process of PPCPs, the methods such as general employing materialization, biochemistry all well cannot remove PPCPs, again because such substance classes is many, concentration is low (concentration is in most cases in ng/L ~ μ g/L level), some is difficult to degraded, conventional Nanofiltration Membrane Separation Technology can retain the part PPCPs that relative molecular weight is 150-1000, but the PPCPs pollutent separated still exists, and degraded not yet in effect.Therefore, a kind of efficient degraded is needed now to remove the method for PPCPs.
Summary of the invention
The invention solves above prior art defect, disclose the method for PPCPs pollutent in a kind of efficient, removal water body that economy, clearance are high, especially remove the method for the PPCPs in natural water.
Technical scheme disclosed by the invention is: a kind of method removing PPCPs in water body, and the method comprises the following steps,
The first step: adopt rumbatron to carry out radiation treatment to containing the former water in the natural water of PPCPs, the scope of irradiation dose is 0.5 ~ 10.0kGy, there is Compton and act in the water molecules wherein in irradiating electron beams and former water, produce a large amount of active particle, there is chemical reaction in the PPCPs in described active particle and former water, wherein part PPCPs is thoroughly decomposed mineralising, and all the other PPCPs are degraded to the intermediate product with good bio-degradable performance.
Second step: the former water in the described the first step after irradiation enters into biochemical degradation pond and degrades further, the PPCPs intermediate product described in biochemical degradation pond is thoroughly degraded, and removes the PPCPs in former water.
In a preferred embodiment of the present invention, preferably, the biochemical degradation pond described in second step comprise following in any one: biological filter, biological fluidized bed or membrane bioreactor.
In a preferred embodiment of the present invention, preferably, described biological filter comprise following in one or several: BAF, biological activated carbon filter and biological sand filter.
In a preferred embodiment of the present invention, preferably, comprise the following steps:
The first step: adopt rumbatron to carry out radiation treatment to containing the former water in the natural water of PPCPs, irradiation dose is 9.0kGy, there is Compton and act in the water molecules wherein in irradiating electron beams and former water, produce a large amount of active particle, there is chemical reaction in the PPCPs in described active particle and former water, wherein part PPCPs is thoroughly decomposed mineralising, and all the other PPCPs are degraded to the intermediate product with good bio-degradable performance.
Second step: the former water in the described the first step after irradiation enters into membrane bioreactor and degrades further, hydraulic detention time in described membrane bioreactor is 9 hours, gas-water ratio is 25:1, PPCPs intermediate product in described membrane bioreactor is thoroughly degraded, and in described membrane bioreactor, PPCPs clearance is 99%.
In a preferred embodiment of the present invention, preferably, comprise the following steps:
The first step: adopt rumbatron to carry out radiation treatment to containing the former water in the natural water of PPCPs, irradiation dose is 0.6kGy, there is Compton and act in the water molecules wherein in irradiating electron beams and former water, produce a large amount of active particle, there is chemical reaction in the PPCPs in described active particle and former water, wherein part PPCPs is thoroughly decomposed mineralising, and all the other PPCPs are degraded to the intermediate product with good bio-degradable performance.
Second step: the former water in the described the first step after irradiation enters into biological activated carbon filter and degrades further, wherein the duration of contact of current and biological activated carbon is 20 minutes, and in described biological activated carbon filter, the clearance of PPCPs is 87%.
In a preferred embodiment of the present invention, preferably, comprise the following steps:
The first step: adopt rumbatron to carry out radiation treatment to containing the former water in the natural water of PPCPs, irradiation dose is 1.0kGy, there is Compton and act in the water molecules wherein in irradiating electron beams and former water, produce a large amount of active particle, there is chemical reaction in the PPCPs in described active particle and former water, wherein part PPCPs is thoroughly decomposed mineralising, and all the other PPCPs are degraded to the intermediate product with good bio-degradable performance.
Second step: the former water in the described the first step after irradiation enters into BAF and degrades further, hydraulic detention time wherein in described Discussion of Biological Aerated Filter Medium layer is 1.5 hours, gas-water ratio is 3:1, is 92% at the clearance of the PPCPs of described BAF Central Plains water.
In a preferred embodiment of the present invention, preferably, the active particle described in the first step comprises one or more of following particle:
,
,
,
,
,
, and
.
The beneficial effect that the present invention reaches: a kind of method removing PPCPs in water body of the present invention, first carry out radiation treatment with rumbatron, PPCPs in water body is effectively degraded, improve the bio-degradable performance of PPCPs, again through biological treatment, thus the PPCPs thoroughly removed in water body, efficient, simple, economy, PPCPs the clearance of the method is high.
Accompanying drawing explanation
Fig. 1 is process flow diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.Following examples only for technical scheme of the present invention is clearly described, and can not limit the scope of the invention with this.
As shown in fig. 1, the method for PPCPs in the removal water body that the present invention relates to, the method comprises the following steps:
The first step: adopt rumbatron to carry out radiation treatment to the former water containing PPCPs, the scope of irradiation dose is 0.5 ~ 10.0kGy, there is Compton and act in the water molecules wherein in irradiating electron beams and former water, produce a large amount of active particle, there is chemical reaction in the PPCPs in described active particle and former water, wherein part PPCPs is thoroughly decomposed mineralising, and all the other PPCPs are degraded to the intermediate product with good bio-degradable performance.
Second step: the former water in the described the first step after irradiation enters into biological filter, biological fluidized bed or membrane bioreactor, and any one is degraded further, the PPCPs intermediate product described in biochemical degradation pond is thoroughly degraded, and removes the PPCPs in former water.
Embodiment 1
The first step: adopt rumbatron to carry out radiation treatment to containing the former water in the natural water of PPCPs, irradiation dose is 9.0kGy, there is Compton and act in the water molecules wherein in irradiating electron beams and former water, produce a large amount of active particle, there is chemical reaction in the PPCPs in described active particle and former water, wherein part PPCPs is thoroughly decomposed mineralising, and all the other PPCPs are degraded to the intermediate product with good bio-degradable performance.
Second step: the former water in the described the first step after irradiation enters into membrane bioreactor and degrades further, hydraulic detention time in described membrane bioreactor is 9 hours, gas-water ratio is 25:1, PPCPs intermediate product in described membrane bioreactor is thoroughly degraded, and in described membrane bioreactor, PPCPs clearance is 99%.
Embodiment 2
The first step: adopt rumbatron to carry out radiation treatment to containing the former water in the natural water of PPCPs, irradiation dose is 0.6kGy, there is Compton and act in the water molecules wherein in irradiating electron beams and former water, produce a large amount of active particle, there is chemical reaction in the PPCPs in described active particle and former water, wherein part PPCPs is thoroughly decomposed mineralising, and all the other PPCPs are degraded to the intermediate product with good bio-degradable performance.
Second step: the former water in the described the first step after irradiation enters into biological activated carbon filter and degrades further, wherein the duration of contact of current and biological activated carbon is 20 minutes, and in described biological activated carbon filter, the clearance of PPCPs is 87%.
Embodiment 3
The first step: adopt rumbatron to carry out radiation treatment to containing the former water in the natural water of PPCPs, irradiation dose is 1.0kGy, there is Compton and act in the water molecules wherein in irradiating electron beams and former water, produce a large amount of active particle, there is chemical reaction in the PPCPs in described active particle and former water, wherein part PPCPs is thoroughly decomposed mineralising, and all the other PPCPs are degraded to the intermediate product with good bio-degradable performance.
Second step: the former water in the described the first step after irradiation enters into BAF and degrades further, hydraulic detention time wherein in described Discussion of Biological Aerated Filter Medium layer is 1.5 hours, gas-water ratio is 3:1, is 92% at the clearance of the PPCPs of described BAF Central Plains water.
Embodiment 4
The first step: adopt rumbatron to carry out radiation treatment to containing the former water in the natural water of PPCPs, irradiation dose is 5.0kGy, there is Compton and act in the water molecules wherein in irradiating electron beams and former water, produce a large amount of active particle, there is chemical reaction in the PPCPs in described active particle and former water, wherein part PPCPs is thoroughly decomposed mineralising, and all the other PPCPs are degraded to the intermediate product with good bio-degradable performance.
Second step: the former water in the described the first step after irradiation enters into biological fluidized bed and degrades further, and the surface-area of filler is more than 3300m in the present embodiment
2/ m
3, be 45 minutes in the residence time of bed, detect the water flowed out from this biological fluidized bed, wherein contrast the PPCPs of former water, the PPCPs of the inside meets water conditioning standard, and the clearance of PPCPs is 92%.
In an embodiment of the present invention, first utilize rumbatron to carry out the former water of irradiation, rumbatron is rumbatron conventional in industry, is not restricted here, by the irradiation of electron beam to water, produces the particle in a large number with high reactive behavior, as free radical (
,
with
), ion (
with
) and
,
equimolecular.When the pH of water is 3 ~ 11, the radiation chemical reaction of water is as follows:
H
2O
[2.7]
+[0.6]H·+[2.8]·OH+[0.45]H
2+[0.72]H
2O
2+[3.2]
+[0.5]
The number of the active particle that the numeral in above formula bracket produces for the beam energy often absorbing 100eV, i.e. radiation chemical yield (G value), the active particle for producing after bracket, wherein hydroxyl radical free radical
(redox potential E
0=2.8V) there is high oxidisability, hydrated electron
(redox potential E
0=-2.8V) and hydrogen atom
(redox potential E
0=-2.1V) there is good reductibility, a series of oxidation/reduction reaction can be caused, make PPCPs pollutent generation altered chemical structure in water, a small amount of pollutent is thoroughly decomposed mineralising, major part contaminant degradation is series of intermediate products, and bio-degradable improves, then through biological treatment, PPCPs pollutent is thoroughly degraded, thus obtains good removal effect.
After a series of process is carried out to former water, the trace residue of PPCPs in the water after check processing is carried out by Solid-Phase Extraction-liquid phase chromatography, thus obtain the clearance of PPCPs, adopt the method in the present invention, the clearance of PPCPs reaches 80-99%, and it meets direct sewage drainage standard in natural water or industrial sewage.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the technology of the present invention principle; can also make some improvement and distortion, these improve and distortion also should be considered as protection scope of the present invention.
Claims (7)
1. remove a method of the PPCPs in water body, it is characterized in that, comprise the following steps:
The first step: adopt rumbatron to carry out radiation treatment to the former water containing PPCPs, the scope of irradiation dose is 0.5 ~ 10.0kGy, there is Compton and act in the water molecules wherein in irradiating electron beams and former water, produce a large amount of active particle, there is chemical reaction in the PPCPs in described active particle and former water, wherein part PPCPs is thoroughly decomposed mineralising, and all the other PPCPs are degraded to the intermediate product with good bio-degradable performance;
Second step: the former water in the described the first step after irradiation enters into biochemical degradation pond and degrades further, the PPCPs intermediate product described in biochemical degradation pond is thoroughly degraded, and removes the PPCPs in former water.
2. the method for a kind of PPCPs removed in water body according to claim 1, is characterized in that, the biochemical degradation pond described in second step comprise following in any one: biological filter, biological fluidized bed or membrane bioreactor.
3. the method for a kind of PPCPs removed in water body according to claim 2, is characterized in that, described biological filter comprise following in one or several: BAF, biological activated carbon filter and biological sand filter.
4. the method for a kind of PPCPs removed in water body stated according to claim 3, is characterized in that, comprise the following steps:
The first step: adopt rumbatron to carry out radiation treatment to the former water containing PPCPs, irradiation dose is 9.0kGy, there is Compton and act in the water molecules wherein in irradiating electron beams and former water, produce a large amount of active particle, there is chemical reaction in the PPCPs in described active particle and former water, wherein part PPCPs is thoroughly decomposed mineralising, and all the other PPCPs are degraded to the intermediate product with good bio-degradable performance;
Second step: the former water in the described the first step after irradiation enters into membrane bioreactor and degrades further, hydraulic detention time in described membrane bioreactor is 9 hours, gas-water ratio is 25:1, PPCPs intermediate product in described membrane bioreactor is thoroughly degraded, and in described membrane bioreactor, PPCPs clearance is 99%.
5. the method for a kind of PPCPs removed in water body stated according to claim 4, is characterized in that, comprise the following steps:
The first step: adopt rumbatron to carry out radiation treatment to the former water containing PPCPs, irradiation dose is 0.6kGy, there is Compton and act in the water molecules wherein in irradiating electron beams and former water, produce a large amount of active particle, there is chemical reaction in the PPCPs in described active particle and former water, wherein part PPCPs is thoroughly decomposed mineralising, and all the other PPCPs are degraded to the intermediate product with good bio-degradable performance;
Second step: the former water in the described the first step after irradiation enters into biological activated carbon filter and degrades further, wherein the duration of contact of current and biological activated carbon is 20 minutes, and in described biological activated carbon filter, the clearance of PPCPs is 87%.
6. the method for a kind of PPCPs removed in water body according to claim 5, is characterized in that, comprise the following steps:
The first step: adopt rumbatron to carry out radiation treatment to the former water containing PPCPs, irradiation dose is 1.0kGy, there is Compton and act in the water molecules wherein in irradiating electron beams and former water, produce a large amount of active particle, there is chemical reaction in the PPCPs in described active particle and former water, wherein part PPCPs is thoroughly decomposed mineralising, and all the other PPCPs are degraded to the intermediate product with good bio-degradable performance;
Second step: the former water in the described the first step after irradiation enters into BAF and degrades further, hydraulic detention time wherein in described Discussion of Biological Aerated Filter Medium layer is 1.5 hours, gas-water ratio is 3:1, is 92% at the clearance of the PPCPs of described BAF Central Plains water.
7. a kind of method removing PPCPs in water body according to claim 6, is characterized in that, the active particle described in the first step comprises one or more of following particle:
,
,
,
,
,
, and
.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410325851.3A CN105271604A (en) | 2014-07-10 | 2014-07-10 | Method for removing PPCPs in water body |
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| CN201410325851.3A CN105271604A (en) | 2014-07-10 | 2014-07-10 | Method for removing PPCPs in water body |
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Cited By (3)
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| CN109467276A (en) * | 2018-12-21 | 2019-03-15 | 中广核达胜加速器技术有限公司 | A kind of method of electron beam irradiation pretreatment antibiotic waste water |
| CN109592854A (en) * | 2019-01-21 | 2019-04-09 | 南华大学 | A kind of low ratio of carbon to ammonium sanitary sewage combined treatment process |
| CN109592855A (en) * | 2019-01-21 | 2019-04-09 | 南华大学 | Utilize irradiation-Combination System of Constructed Wetland enhanced sewage treatment plant's Tailwater Depth processing method |
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| JP2002292366A (en) * | 2001-03-29 | 2002-10-08 | Mitsuhiro Kidai | Circulated water cleaner filled with tourmaline irradiated with laser pulse |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109467276A (en) * | 2018-12-21 | 2019-03-15 | 中广核达胜加速器技术有限公司 | A kind of method of electron beam irradiation pretreatment antibiotic waste water |
| CN109592854A (en) * | 2019-01-21 | 2019-04-09 | 南华大学 | A kind of low ratio of carbon to ammonium sanitary sewage combined treatment process |
| CN109592855A (en) * | 2019-01-21 | 2019-04-09 | 南华大学 | Utilize irradiation-Combination System of Constructed Wetland enhanced sewage treatment plant's Tailwater Depth processing method |
| CN109592855B (en) * | 2019-01-21 | 2021-11-02 | 南华大学 | Method for strengthening advanced treatment of tail water of sewage treatment plant by using irradiation-artificial wetland combined process |
| CN109592854B (en) * | 2019-01-21 | 2021-11-02 | 南华大学 | Low-carbon-nitrogen-ratio domestic sewage combined treatment process |
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