CN102963977A - Culture raw water treatment process - Google Patents
Culture raw water treatment process Download PDFInfo
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- CN102963977A CN102963977A CN2012104324157A CN201210432415A CN102963977A CN 102963977 A CN102963977 A CN 102963977A CN 2012104324157 A CN2012104324157 A CN 2012104324157A CN 201210432415 A CN201210432415 A CN 201210432415A CN 102963977 A CN102963977 A CN 102963977A
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- reaction tank
- former water
- activated carbon
- water technology
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The invention discloses a culture raw water treatment process which comprises the following steps: introducing culture raw water into a reaction tank; adding powder active carbon into the reaction tank, inoculating a strain, thoroughly mixing and continuously aerating; and starting a ceramic membrane solid-liquid separation system, discharging purified water for use, and adding the separated active carbon granules into the reaction tank for reclamation. The method disclosed by the invention has favorable treatment effect, favorable removal effect of COD (chemical oxygen demand) and ammonia nitrogen, and favorable disintoxicating effect. The method disclosed by the invention has the advantages of simple treatment process, no need of extra chemical raw materials, and low treatment cost.
Description
Technical field
The present invention relates to a kind of water technology, particularly the former water technology of a kind of cultivation.
Background technology
Along with the development of society and the output that covets, cultivation water environment also is subject to certain pollution.Cultivation water environment pollutes the pollution such as the nutritive salt that not only comprises ammonia nitrogen, nitrite, hydrogen sulfide, organic contamination, also comprise the Environmental Hormone Pollution such as heavy metal, agricultural chemicals, weedicide, disinfection sanitizer, microbiotic, the latter particularly, pollutant kind is more, character is complicated, concentration is lower, but toxicity is high, is commonly called little pollution.The Micropollutants that have the greatest impact to growing seedlings are heavy metal and environmental hormone.Environmental hormone mostly is the small molecules organic compound of synthetic, and such as agricultural chemicals, weedicide etc., although content low (how in μ g/L level), strong toxicity consists of greatly threat to aquatic fry growing.
In order to guarantee the needs of aquatic fry growing, need to carry out effectively purifying treatment to cultivating former water.And existing treatment process is generally filtration method and routine biochemistry method, processes cultivating former water by precipitating a filtration one air supporting-techniques such as sterilization.The treatment process of this routine has preferably treatment effect to turbidity, suspended substance, colloidal impurity, germ etc. in the water body, and the small molecules hardly degraded organic substances such as the agricultural chemicals that exists in the water, weedicide, sterilizing agent are not almost had treatment effect.
Summary of the invention
The object of the invention is to carry a kind for the treatment of process that cultivates former water.
The technical solution used in the present invention is:
The former water technology of a kind of cultivation comprises the steps:
1) will cultivate former water and introduce reaction tank;
2) add Powdered Activated Carbon in reaction tank, the inoculation bacterial classification fully mixes continuous aeration;
3) start the ceramic membrane solid-liquid separation system, the water after purifying is discharged use, isolated activated carbon granule drops into the reaction tank reuse.
Treat that all activated carbon granules finish bio-film colonization and obtain after the biological activated carbon particle, to cultivate former water and introduce reaction tank, fully mixed afterwards continuous aeration 2～4 hours, re-strike ceramic film solid-liquid separation system afterwards, water after purifying is discharged use, isolated biological activated carbon particle drops into the reaction tank reuse, can realize the former water treatment of connection.Certainly, in the process of processing, can suitably drop into a small amount of new activated carbon granule, with the activated carbon granule of replenish loss.
Preferably, the addition of Powdered Activated Carbon is 25～40 g/L in the reaction tank.
Preferably, fully mixing continuous aeration makes the dissolved oxygen of former water in the reaction tank be not less than 2 mg/L.
Preferably, bacterial classification is at least a in genus bacillus, actinomycetes, the pseudomonas.The inoculum size of bacterial classification is 4 * 10
5～4 * 10
6Cfu/L.
Preferably, the time of continuous aeration is 3～4h.
Preferably, using ejector that reaction tank is carried out mixed aeration processes.Can realize simultaneously like this mixing the purpose with aeration, be conducive to save equipment cost.
The invention has the beneficial effects as follows:
The inventive method treatment effect is good, and is effective to removing of COD and ammonia nitrogen, has good detoxifying effect.The inventive method treatment process is comparatively simple, need not additionally to add industrial chemicals, and processing cost is lower.
Embodiment
The former water technology of a kind of cultivation comprises the steps:
1) will cultivate former water and introduce reaction tank;
2) add Powdered Activated Carbon in reaction tank, the inoculation bacterial classification fully mixes continuous aeration;
3) start the ceramic membrane solid-liquid separation system, the water after purifying is discharged use, isolated activated carbon granule drops into the reaction tank reuse.
Treat that all activated carbon granules finish bio-film colonization and obtain after the biological activated carbon particle, to cultivate former water and introduce reaction tank, fully mixed afterwards continuous aeration 2～4 hours, re-strike ceramic film solid-liquid separation system afterwards, water after purifying is discharged use, isolated biological activated carbon particle drops into the reaction tank reuse, can realize the former water treatment of connection.Certainly, in the process of processing, can suitably drop into a small amount of new activated carbon granule, with the activated carbon granule of replenish loss.
Preferably, the addition of Powdered Activated Carbon is 25～40 g/L in the reaction tank.
Preferably, fully mixing continuous aeration makes the dissolved oxygen of former water in the reaction tank be not less than 2 mg/L.
Preferably, bacterial classification is at least a in genus bacillus, actinomycetes, the pseudomonas.The inoculum size of bacterial classification is 4 * 10
5～4 * 10
6Cfu/L.
Preferably, the time of continuous aeration is 3～4h.
Preferably, using ejector that reaction tank is carried out mixed aeration processes.
Material and key instrument:
The ceramic film component material: select 48 of the inorganic ceramic mould materials that the prosperous environmental science and technology of Guangzhou great waves company limited produces, inorganic ceramic film is double membrane structure, the hole membranes pipe, and film pipe external diameter 40mm, long 800mm, 0.1 micron of membrane pore size, 8 is 1 group, membrane area 1m
2With the PVC membrane shell material of DN250mm, every arm is installed 1 group of 8 film pipe, is built into 1 cover membrane module, membrane area 1m
26 cover membrane modules are installed on 1 assembly mould frame, form 1 cover inorganic ceramic pleurodiaphragmatic in terspace water solid-liquid separation system, the design automatic control system can realize automatic operation and the back flushing of system;
Gac: available from the Dongguan prosperous filtering material of letter company limited, cocoanut active charcoal is more than 200 orders;
Activated charcoal filter: available from the Dongguan modest should be grand environmental protection company limited, be the glass reinforced plastic structure, specification: 600 * 1800 mm, gac adopt 5 mm granulated active carbons;
The sand cylinder: available from the Dongguan modest should be grand environmental protection company limited, be the glass reinforced plastic structure, specification: 600 * 1800 mm, filter sand adopts the 2-3mm sand grains.
Analysis project and measuring method
The mensuration of chemical oxygen demand (COD):
A ferrous sulfate ammonia titration measuring is cleared up in employing.
The mensuration of ammonia nitrogen:
Adopt the nessler reagent spectrophotometry.
TSS measures:
Adopt gravimetric determination, measuring method, is transferred to the solid part after centrifugal in the crucible behind the centrifugal 10min of whizzer (rotating speed is 4500rpm) fully for getting quantitative sewage, puts into baking oven after 105 ℃ of lower constant weights, and weighing obtains suspended substance weight in the sewage.
Phosphatic mensuration:
The employing molybdenum-antimony anti-spectrophotometric method is measured.
UV254 measures:
Water sampling is used the 0.4um millipore filtration, utilizes ultraviolet spectrophotometer direct reading under the 254nm wavelength.
Photogenic bacterium toxicity detects:
Photobacterium phosphoreum (PhotobacteriumphosphoremT3) lyophilized powder that the photobacterium bioassay method adopts U.S. SDI company to produce is measured different water sample luminous intensities, experimental result with
Each sample determination 3 times is got mean value 3 times, to guarantee the reliability of the data.Calculating formula is as follows.
Luminous inhibiting rate (%)=(light intensity in the light intensity/blank in 1-sample) * 100%.
Temperature and detection of dissolved oxygen:
Temperature and dissolved oxygen adopt dissolved oxygen meter directly to measure.
The pH value:
Adopt pH meter directly to measure.
The commissioning test method:
Commissioning test is 30 days, at the 30g/L Powdered Activated Carbon, moves under the condition of residence time 2h, and reaction tank adopts the ejector aeration, and aeration intensity is as the criterion more than 2mg/l with dissolved oxygen in the pond, at 100m
3After river pumps into, drop into 150ppm bacterial classification (4 * 10
5～4 * 10
6Cfu/L, the genus bacillus that consists of equal proportion, actinomycetes and the pseudomonas of bacterial classification), continuous aeration 3d starts the ceramic membrane solid-liquid separation system afterwards, and the ceramic membrane water outlet is controlled at 8.3m
3/ h, making the reaction tank residence time is 2h, water level control is adopted in the reaction tank water inlet, when the reaction tank water level reduces, automatically start intake pump, directly pump into river, system moves 30 days continuously, to finish bio-film colonization (obtaining the biological activated carbon particle), obtains the water purification system of steady running.
The result shows that between 30 days limber up period, reactive system shows as identical rule to the rate of removing of COD and ammonia nitrogen, all is first height, is reducing, and rising is to stable subsequently.Move front 5 days, the COD rate of removing is 40%-50%, is reduced to about 20% in 6-9 days subsequently, progressively rises afterwards, and to 22 days, system stablized to 50-60% the COD rate of removing.Move front 6 days, system's ammonia nitrogen rate of removing is 20%-30%, is reduced to about 10-20% in 7-13 days subsequently, progressively rises afterwards, and to 15 days, system stablized to about 30% the ammonia nitrogen rate of removing.This shows, and is the starting stage for the treatment of process, to be adsorbed as the master, along with carrier adsorption is saturated, more and more lower to the contaminant removal rate to the removal of COD and ammonia nitrogen; In the later stage, carrier has begun biofilm, so COD and ammonia nitrogen are removed rate after being reduced to a certain degree, begin to rise, be stabilized at last on the certain numerical value, because the Activated Carbon for Adsorption of Organic effect is much larger than to the ammonia nitrogen system, the inventive method is removed rate greater than removing ammonia nitrogen to COD.
The different methods decontamination effect improving compares:
Use respectively the former water of water purification, sand filtration, activated carbon filtration of steady running of the present invention, detect afterwards its decontamination effect improving.Concrete filtration, purification is processed as follows:
The operating parameter of the water purification system of steady running of the present invention is: concentration of medium 3%, residence time 2h;
The sand filtration operating parameter is: 2-3mm sand grains, filtering velocity 10m/h;
Activated carbon filtration is the 5mm granulated active carbon, filtering velocity 10m/h,
Above-mentioned 3 kinds of processing all move 5d continuously, compare afterwards it to former water purification effect.Experimental result is as follows:
The result shows.No matter be to conventional indexs such as COD, ammonia nitrogens, or UV254, photogenic bacterium press down the light rate relatively, the inventive method is removed rate and all is higher than sand filtration and activated carbon filtration.The inventive method is respectively 58.6% and 15.5% to COD and the ammonia nitrogen rate of removing, and activated carbon filtration is respectively 24.6% and 12.5% to COD and the ammonia nitrogen rate of removing, and that rate is removed in sand filtration is extremely low; The inventive method is better with the relative light rate effect that presses down to UV254, descends respectively 76.3% and 46.9%, and activated carbon filtration also has certain effect to reducing former water toxicity, UV254 and relative but the light rate descends respectively 39.8% and 22.0%1.Detoxifcation there is no effect and sand filtration is to river.
The water purification system parameter testing operation method of steady running of the present invention:
By changing the water yield in the reaction tank, make system media (biological activity carbon powder) concentration (mass percent) be in respectively 1%, 3%, 5% level, under the operational conditions of the 2h residence time, compare the Inlet and outlet water water-quality guideline.Experimental result is as follows:
The result shows, carrier concn has certain influence to detoxifying effect, when carrier concn rises to 3% by 1%, UV254 and the relative light rate down ratio that presses down are respectively by 60.3%, 30.5% rises to 80.2% and 49.0%, continue afterwards to improve carrier concn, little on the detoxifying effect impact, UV254 only has faint rising with the relative light rate down ratio that presses down, when carrier concn rises to 5%, UV254 only rises to 83.1% and 51.7% with the relative light rate down ratio that presses down, consider running cost and ceramic membrane solid-liquid separation system separation efficiency, reaction tank carried by active carbon bulk concentration is advisable with about 3%.
Extracting the former water of cultivation of another batch, is in 3% the situation at concentration of medium, by adjusting the ceramic membrane water flow, makes system be respectively 1h, 2h, 3h, 4h, 5h the residence time, and test macro is to the river water cleaning effect.Experimental result is as follows:
The result shows, there is certain influence the residence time to detoxifying effect, when the residence time rises to 2h by 1h, UV254 and the relative light rate down ratio that presses down are respectively by 66.4%, 35.6% rises to 76.3% and 45.6%, continue afterwards to improve the residence time, little on the detoxifying effect impact, along with the residence time rises to 3h, 4h, 5h, UV254 only has faint rising with the relative light rate down ratio that presses down, rise to respectively 80.5% and 51.2%, 81.8% and 49.7% and 80.5% and 53.3%, consider running cost and reactor floor space, the reaction tank residence time is advisable about with 2h, and increasing the residence time can not significantly increase system's detoxifying effect.
Claims (7)
1. the former water technology of cultivation comprises the steps:
1) will cultivate former water and introduce reaction tank;
2) add Powdered Activated Carbon in reaction tank, the inoculation bacterial classification fully mixes continuous aeration;
3) start the ceramic membrane solid-liquid separation system, the water after purifying is discharged use, isolated activated carbon granule drops into the reaction tank reuse.
2. the former water technology of cultivation according to claim 1, it is characterized in that: the addition of Powdered Activated Carbon is 25～40 g/L.
3. the former water technology of cultivation according to claim 1 and 2 is characterized in that: fully mix continuous aeration and make the dissolved oxygen of former water in the reaction tank be not less than 2 mg/L.
4. the former water technology of cultivation according to claim 1 and 2 is characterized in that: bacterial classification is at least a in genus bacillus, actinomycetes, the pseudomonas.
5. the former water technology of cultivation according to claim 3, it is characterized in that: the inoculum size of bacterial classification is 4 * 10
5～4 * 10
6Cfu/L.
6. the former water technology of cultivation according to claim 3, it is characterized in that: the time of continuous aeration is 3～4h.
7. the former water technology of cultivation according to claim 3 is characterized in that: use ejector that reaction tank is carried out mixed aeration and process.
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| CN201210432415.7A CN102963977B (en) | 2012-11-02 | 2012-11-02 | Culture raw water treatment process |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105217777A (en) * | 2015-11-05 | 2016-01-06 | 江苏天伦活性炭有限公司 | A kind of water treatment biological activated carbon preparation technology flow process |
| CN105565596A (en) * | 2015-12-21 | 2016-05-11 | 天津欧盼科技开发有限公司 | Water pollution treatment method |
| CN108083565A (en) * | 2017-12-15 | 2018-05-29 | 浩蓝环保股份有限公司 | A kind of biochemical tailrace advanced treatment process of chemical industry |
| CN108409061A (en) * | 2018-05-10 | 2018-08-17 | 深圳市农博创新科技有限公司 | Sea-farming water treatment system |
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| CN1961663A (en) * | 2006-11-20 | 2007-05-16 | 哈尔滨工业大学 | Nitrifying water treatment device for aquaria |
| CN101200338A (en) * | 2006-12-12 | 2008-06-18 | 上海水产大学 | Method for removing organics and ammonia nitrogen from aquaculture water |
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Patent Citations (2)
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|---|---|---|---|---|
| CN1961663A (en) * | 2006-11-20 | 2007-05-16 | 哈尔滨工业大学 | Nitrifying water treatment device for aquaria |
| CN101200338A (en) * | 2006-12-12 | 2008-06-18 | 上海水产大学 | Method for removing organics and ammonia nitrogen from aquaculture water |
Non-Patent Citations (2)
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105217777A (en) * | 2015-11-05 | 2016-01-06 | 江苏天伦活性炭有限公司 | A kind of water treatment biological activated carbon preparation technology flow process |
| CN105565596A (en) * | 2015-12-21 | 2016-05-11 | 天津欧盼科技开发有限公司 | Water pollution treatment method |
| CN108083565A (en) * | 2017-12-15 | 2018-05-29 | 浩蓝环保股份有限公司 | A kind of biochemical tailrace advanced treatment process of chemical industry |
| CN108409061A (en) * | 2018-05-10 | 2018-08-17 | 深圳市农博创新科技有限公司 | Sea-farming water treatment system |
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| CN102963977B (en) | 2014-12-31 |
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Owner name: WANG HUAWU Free format text: FORMER OWNER: GUANGZHOU HENGZHAO ENVIRONMENTAL BIOENGINEERING CO., LTD. Effective date: 20150209 |
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Address after: 510520 Guangdong city of Guangzhou province Tianhe District Ke Mu Lang Lan Yuan Street No. 12 201 Patentee after: Guangdong Yanjing Environmental Investment Co. Ltd. Address before: 510663, Guangdong, Luogang District Science City TCL Industrial Park, spectrum West Road No. two, phase 69, A213, Guangzhou Patentee before: Guangzhou Yanjing environmental protection science and technology limited company |
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