CN101024542A - Biological reinforcing technology for increasing stability of oil-contained waste water treatment system - Google Patents
Biological reinforcing technology for increasing stability of oil-contained waste water treatment system Download PDFInfo
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- CN101024542A CN101024542A CN 200610020316 CN200610020316A CN101024542A CN 101024542 A CN101024542 A CN 101024542A CN 200610020316 CN200610020316 CN 200610020316 CN 200610020316 A CN200610020316 A CN 200610020316A CN 101024542 A CN101024542 A CN 101024542A
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Abstract
The invention relates to a biology strengthening technology to improve oily wastewater processing system stability. It tests the waste quality, system running parameter and key biological indicator by ERIC-PCR. It selects microbiology compound fungus agent or the compound, when system running normally, enduring high load or impacted by toxic pollutant, according 1013-1015 per cubic meter, adding 1013-1016 live fungus special effect degradation functional fungus, adding compound microbiology fungus agent or the compound into the system, controlling system parameter: dissolved oxygen 2-5mg/L, taking water pH 6.5-9.0, inner system pH 6.5-8.5, biomass 109-1016CFU, and dehydrase activity 10U. The invention realizes optimal control to process system, fully improves dislodging efficiency and stability of the process system. And it also achieves high environment social and economic benefits.
Description
Technical field
The invention belongs to environmental technology field, be specifically related to a kind of biological reinforcing technology that improves stability of oil-contained waste water treatment system.
Background technology
Oily(waste)water is a kind of various lots of source of pollution that produce in the oil development utilization activity, belong to high concentration hard-degraded organic waste water, mainly contain pollutents such as alkanes, arene, volatile phenol and ammonia nitrogen, the toxicity height, quantity discharged is big, and the water quality and quantity instability causes great pollution to environment, need handle and could discharge.With the refinery oily(waste)water is example, the waste water of present domestic refinery mostly adopts the method for oil removal-air supporting-biochemical treatment to handle, wherein biochemical treatment mainly is to adopt various activated sludge treatment methods, processing efficiency is not high, and because active sludge is formed complexity, variation is big, difficult control, biological reinforcing technology is exactly to put forward in this case.There are some researches show that biological reinforced treatment system is handled oily(waste)water can obtain good effect of removing.But, in actual oil refining process, because the oil refining apparatus difference of the different and different periods operations in the crude oil source place of processing, caused in the oily(waste)water pollutant kind and change in concentration amplitude very big, often cause high loading to impact to treatment system.Therefore, at this class oily(waste)water, how to improve treatment system stability by biological reinforcing technology, the long-term stability of target contaminant degradation function flora in the maintenance system realizes the discharging of treat effluent stably reaching standard, has become a difficult problem of being badly in need of solution.
Summary of the invention
The purpose of this invention is to provide a kind of biological reinforcing technology that improves stability of oil-contained waste water treatment system.It thes contents are as follows:
1, to the detection of waste water quality, system operational parameters and crucial biological indicator:
COD adopts microwave dissolver to measure; Volatile phenol adopts potassium bromate method to measure; Petroleum-type adopts determined by ultraviolet spectrophotometry; Sulfide adopts iodometric determination; Dissolved oxygen adopts dissolved oxygen meter to measure; Sludge concentration adopts the dry weight method to determine; The sludge organism amount adopts colony counting method to measure; Dehydrogenase activity adopts triphenyltetrazolium chloride (TTC) method to measure; Biological community structure adopts the ERIC-PCR technology to carry out analyzing and testing; The monitoring of QC-PCR technology qualitative, quantitative is adopted in the dynamic change of petroleum pollution special efficacy degradation function bacterium.
2, improve the control technique of system stability: according to waste water quality, system operational parameters and crucial biological indicator, select required complex microbial inoculum or its combination, in system, add complex microbial inoculum or its combination, microorganism growth promotor, regulator control system operational conditions by the following method.
(1) in system, adds 10 by every cubic metre of system's useful volume
13～10
15The ratio of individual viable count special efficacy degradation function bacterium adds complex micro organism fungicide or its combination, makes up biological reinforced treatment system; The Controlling System parameter is: dissolved oxygen 2～5mg/L, water inlet pH6.5～9.0, pH6.5 in the system～8.5, biomass 10
10～10
15CFU is more than the dehydrogenase activity 20U.
When (2) being subjected to high loading or toxic pollutant impact, in system, add 10 by every cubic metre of system's useful volume in system
13～10
16The ratio of individual viable count special efficacy degradation function bacterium is added complex micro organism fungicide or its combination, 5～12mg/L microorganism growth promotor, and the Controlling System parameter is: dissolved oxygen 2～Smg/L, water inlet pH6.5～9.5, pH6.5 in the system～8.5, biomass 10
9～10
16CFU is more than the dehydrogenase activity 10U.
Complex microbial inoculum or its combination are meant the commercially available microbiobacterial agent with specific degradation function or its combination, as; ENVICAS-PD, ENVICAS-ND, ENVICAS-OIL, EM series microbial inoculum etc.; Microorganism growth promotor is meant vitamins B
12Or vitamin H or nicotinic acid or benzaminic acid or hydrochloric acid Pyridoxylamine or calcium pantothenate or dipotassium hydrogen phosphate or riboflavin or its combination or commercially available microorganism growth promotor product, as VB591, BiNutrix-ww etc.
Superior part of the present invention is:
(1) biological indicators such as the biomass of microorganism, enzyme work and structure of community in the rapid detection oil-contained waste water treatment system with respect to traditional detection index (SV, SVI, sludge concentration, COD etc.), more can reflect the operation real conditions of system.Especially adopt the ERIC-PCR technology that the biological community structure in the system is detected, can follow the tracks of the situation of microorganism in the system more timely and accurately.According to these indexs can be shot the arrow at the target biological reinforced system is regulated and control, instant effect is saved running cost.
(2) to the analysis-by-synthesis of each biological indicator, make up biological reinforced system by in active sludge processing system, adding modes such as microbiobacterial agent and regulation and control operating parameter, improve the structure of community of microorganism and control each index at optimum level, thereby realize optimization regulation and control, improve the removal efficient and the stability of treatment system comprehensively treatment system.
(3) at various impact load, by adding different microbial inoculum amounts, adopt modes such as suitable promotor dosage and regulation and control operating parameter to make each index return to optimum level rapidly, thereby realize the fast quick-recovery and the steady running of biological treatment system.Therefore, this control technique has higher environmental benefit, social benefit and economic benefit.
(4) this technology is impacted the oily(waste)water high loading that multiple reaches more than 3 that is hit, after 6 hours, can detection of biological treatment system biological indicator change, its biomass, enzyme lowering speed of living is fast, the ERIC-PCR band active sludge that characterizes the active sludge microorganism structure of community disappears substantially, formulate biological reinforced regulation measure, can recover to reach original state substantially after 3 days, through further detection of biological amount, enzyme are lived, show that biological reinforced system improves a lot, use the ERIC-PCR feature band of its mud of biological reinforced system of microbial inoculum to remain unchanged substantially.This technology has great using value to solving the ubiquitous unsettled practical problems of variation water quality that is subjected to of present biological treatment of waste water system, provides a kind of measure to solving the emergent biological restoration of water surrounding risk simultaneously.
Description of drawings
Fig. 1 is the ERIC segment amplification that Sludge System is subjected to moderate duty impact front and back, wherein 1.Marker; 2. blank; 3. first day; 4. the 3rd day; 5. the 5th day; 6. the 9th day.
Fig. 2 is the ERIC segment amplification that biological reinforced treatment system is subjected to moderate duty impact front and back, wherein 1.Marker; 2. blank; 3. composite fungus agent; 4. first day; 5. the 3rd day; 6. the 5th day; 7. the 9th day.
Embodiment
Embodiment 1: add the 2000mg/L active sludge respectively in useful volume is sbr reactor device A, the B of 1L, handles the refinery water after handling through oil removal, air supporting from the Nanchong refinery, its waste water quality analytical results sees Table 1.Determine that according to table 1 used complex micro organism fungicide is that (the microbial inoculum viable count is about 10 to the petroleum-type efficient degradation composite fungus agent ENVICAS-PD that produces of Chengdu Zhongke Chuangzhi Environment Protection Co., Ltd.
9Individual/as mL), not add microorganism growth promotor.Reactor A adds the selected complex micro organism fungicide of 100mL in contrast in reactor B, move 3 days through normal continuously, and the clearance of its COD reaches stable.Improve influent load then, carry out 2 days high loadinies and impact, the every biological indicator after system is hit is carried out analyzing and testing (wherein dehydrogenase activity detects sample time for after intaking 6 hours), and detected result is as follows.
Table 1 waste water quality analytical results
| Test item | Mean value | Variation range |
| COD(mg/L) | 1431 | 1124-1736 |
| pH | 8.7 | 8.5-9.0 |
| Volatile phenol (mg/L) | 14.8 | 11.6-18.0 |
| Petroleum-type (%) | 19.7 | 11.9-27.5 |
| Sulfide (mg/L) | 17.6 | 8.5-26.7 |
Table 2 Sludge System and biological reinforced system are subjected to moderate duty to impact front and back biomass changing conditions
| Sampling constantly | Biomass (CFU) | |
| Sludge System A | Biological reinforced system B | |
| The 3rd day (system is stable, before beginning to impact) the 5th day (system is subjected to moderate duty and impacts the back) the 9th day (system recovers stable back once more) | 7.4×10 10 6.5×10 10 2.1×10 9 | 1.6×10 15 4.7×10 16 9.1×10 14 |
Table 3 Sludge System and biological reinforced system are subjected to moderate duty to impact front and back dehydrogenase activity changing conditions
| Sampling constantly | Dehydrogenase activity (U) | |
| Sludge System A | Biological reinforced system B | |
| The 3rd day (system is stable, before beginning to impact) the 5th day (system is subjected to moderate duty and impacts the back) the 9th day (system recovers stable back once more) | 18.5 7.4 16.1 | 28.9 13.2 26.7 |
By table 2 and table 3 as can be known: the enzyme work of biomass in the biological reinforced system and microorganism is apparently higher than Sludge System.After being hit, the enzyme of biomass and microorganism variable quantity alive all is higher than biological reinforced system in the Sludge System, shows that biological reinforced system has better stability.
Carry out structural analysis of microbial community with the ERIC-PCR technology: Sludge System and the biological reinforced system ERIC segment amplification in moderate duty impacts respectively as shown in Figures 1 and 2.Add on the ERIC-PCR finger printing of microorganism in the system of composite fungus agent ENVICAS-PD and have two key band A (1.7kb), B (1.7kb) and an auxiliary character band C (260bp) (seeing accompanying drawing 2).
From accompanying drawing 1 as can be seen, band 3 and band 4 are basic identical, and the active sludge of this explanation in oil-contained waste water treatment system can stable existence.After system is subjected to the high loading impact, the ERIC-PCR band of mud during with respect to system stability, some bands disappear in the band 5, have some bands to display simultaneously.Band 6 be presented at the water outlet COD of system stable after, the state of its little ecology before also the system of returning to is not hit, system during this time is unsettled in fact, is difficult to the impact of bearing high loading once more.
From accompanying drawing 2 as can be seen, after oil-contained waste water treatment system added active microbial inoculum, the band that the ERIC segment amplifies was similar with the amplified band of microbial inoculum.Illustrate that in the biological reinforced treatment system of oily(waste)water, the active microbial inoculum of adding accounts for main component in mud.Band 4 and band 5 are basic identical, and the existence that active microbial inoculum can be stable in oil-contained waste water treatment system is described.The band of the brightness that indivedual bands are only arranged in the band 6 during with system stable operation is different, the biological reinforced treatment system of this explanation oily(waste)water is after being subjected to the moderate duty impact, the relativity of the functional microorganism in its microbial inoculum weakens, but biological community structure is basicly stable.Band 7 and band 4,5 basically identicals illustrate the biological reinforced treatment system of oily(waste)water after being subjected to the moderate duty impact, and its biological community structure can return to the level before not being subjected to impacting.
Sludge System and biological reinforced system to the removal effect of COD shown in table 4, table 5.As can be seen from the table, Sludge System in being subjected to impacting preceding, impact process and the COD average removal rate that impacts after finishing be respectively 73.5%, 53.3% and 65.7%, and the COD average removal rate of biological reinforced system is respectively 81.6%, 60.7% and 80.1%; The COD average removal rate of Sludge System has descended 7.8% before impacting, and biological reinforced system has only descended 1.5%, illustrates that biological reinforced system has higher stability.
Table 4 Sludge System is subjected to moderate duty to impact the removal situation of front and back to COD
| Fate (d) | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| Water inlet COD (mg/L) | 386 | 357 | 387 | 1117 | 1294 | 395 | 390 | 426 | 389 |
| Volumetric loading (kg/m 3·d) | 0.39 | 0.36 | 0.39 | 1.12 | 1.30 | 0.40 | 0.39 | 0.43 | 0.39 |
| Water outlet COD (mg/L) | 105 | 91 | 104 | 572 | 546 | 124 | 136 | 146 | 132 |
| COD degradation rate (%) | 72.8 | 74.5 | 73.1 | 48.8 | 57.8 | 69.6 | 65.1 | 65.7 | 66.1 |
The biological reinforced system of table 5 is subjected to moderate duty to impact the removal situation of front and back to COD
| Fate (d) | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| Water inlet COD (mg/L) | 386 | 357 | 387 | 1117 | 1294 | 395 | 390 | 426 | 389 |
| Volumetric loading (kg/m 3·d) | 0.39 | 0.36 | 0.39 | 1.12 | 1.30 | 0.40 | 0.39 | 0.43 | 0.39 |
| Water outlet COD (mg/L) | 74 | 63 | 71 | 462 | 479 | 82 | 78 | 86 | 76 |
| COD degradation rate (%) | 80.8 | 82.4 | 81.7 | 58.4 | 63.0 | 79.3 | 80.0 | 79.8 | 80.5 |
Embodiment 2: add the 2000mg/L active sludge respectively in useful volume is sbr reactor device A, the B of 5L, handles the high density refinery water from the Nanchong refinery, its Analysis Results of Water Quality sees Table 6.Determine that according to table 6 used complex micro organism fungicide is the petroleum-type efficient degradation composite fungus agent ENVICAS-PD of Chengdu Zhongke Chuangzhi Environment Protection Co., Ltd.'s production and the combination of polycyclic aromatic hydrocarbons and heterocyclic efficient degradation composite fungus agent ENVICAS-ND (the microbial inoculum viable count is about 109/mL), microorganism growth promotor is Chengdu Zhongke Chuangzhi Environment Protection Co., Ltd.'s production VITAMIN complex liquid growth stimulant (main component is vitamin B12, vitamin H, nicotinic acid, benzaminic acid, hydrochloric acid Pyridoxylamine, calcium pantothenate, dipotassium hydrogen phosphate etc.).Reactor A adds 500mLENVICAS-PD and 250mLENVICAS-ND in contrast in reactor B, 50mg VITAMIN complex liquid growth stimulant, and normal continuously operation 2 days, the clearance of its COD reaches stable.Improve influent load then, carry out 3 days high loadinies and impact, the every biological indicator after system is hit is carried out analyzing and testing (wherein dehydrogenase activity detects sample time for after intaking 6 hours), and detected result is as follows.Measurement result shows that the stability of biological reinforced system still is higher than Sludge System.
Table 6 waste water quality analytical results
| Test item | Mean value | Variation range |
| COD(mg/L) | 3638 | 3490-3786 |
| pH | 9.2 | 9.0-9.3 |
| Volatile phenol (mg/L) | 19.0 | 14.2-23.5 |
| Petroleum-type (%) | 12.3 | 8.1-16.4 |
| Sulfide (mg/L) | 42.8 | 26.3-59.3 |
Table 7 Sludge System and biological reinforced system are subjected to high loading to impact front and back biomass changing conditions
| Sampling constantly | Biomass (CFU) | |
| Sludge System A | Biological reinforced system B | |
| Second day (system is stable, before beginning to impact) the 5th day (system is subjected to high loading and impacts the back) the 9th day (system recovers stable back once more) | 7.2×10 8 2.5×10 9 3.6×10 9 | 9.3×10 9 4.9×10 9 5.8×10 10 |
Table 8 Sludge System and biological reinforced system are subjected to high loading to impact front and back dehydrogenase activity changing conditions
| Sampling constantly | Dehydrogenase activity (U) | |
| Sludge System A | Biological reinforced system B | |
| Second day (system is stable, before beginning to impact) the 5th day (system is subjected to high loading and impacts the back) the 9th day (system recovers stable back once more) | 12.4 3.8 9.6 | 23.2 8.9 19.7 |
Table 9 Sludge System is subjected to high loading to impact the removal situation of front and back to oily(waste)water COD
| Fate (d) | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| Water inlet COD (mg/L) | 1147 | 916 | 1047 | 1285 | 1104 | 949 | 1089 | 1132 | 1047 |
| Volumetric loading (kg/m 3·d) | 1.15 | 0.92 | 2.09 | 2.57 | 2.2 | 0.95 | 1.09 | 1.13 | 1.05 |
| Water outlet COD (mg/L) | 114 | 122 | 595 | 734 | 545 | 214 | 233 | 203 | 206 |
| COD degradation rate (%) | 90.1 | 86.7 | 43.2 | 42.9 | 50.6 | 77.4 | 78.6 | 82.1 | 80.3 |
The biological reinforced system of table 10 is subjected to high loading to impact the removal situation of front and back to oily(waste)water COD
| Fate (d) | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| Water inlet COD (mg/L) | 1019 | 895 | 1029 | 1413 | 1186 | 1028 | 1059 | 1109 | 985 |
| Volumetric loading (kg/m 3·d) | 1.02 | 0.89 | 2.06 | 2.83 | 2.37 | 1.03 | 1.06 | 1.11 | 0.99 |
| Water outlet COD (mg/L) | 72 | 74 | 561 | 666 | 501 | 179 | 120 | 141 | 91 |
| COD degradation rate (%) | 92.9 | 91.7 | 45.5 | 52.8 | 57.7 | 82.6 | 88.6 | 87.2 | 90.7 |
Claims (2)
1, a kind of biological reinforcing technology that improves stability of oil-contained waste water treatment system is characterized in that: by detecting waste water quality, system operational parameters and crucial biological indicator, select required complex microbial inoculum or its combination, handle by the following method:
(1) in system, adds 10 by every cubic metre of system's useful volume
13～10
15The ratio of individual viable count special efficacy degradation function bacterium adds complex micro organism fungicide or its combination, makes up biological reinforced treatment system; The Controlling System parameter is: dissolved oxygen 2～5mg/L, water inlet pH6.5～9.0, pH6.5 in the system～8.5, biomass 10
10～10
15CFU is more than the dehydrogenase activity 20U;
When (2) being subjected to high loading or toxic pollutant impact, in system, add 10 by every cubic metre of system's useful volume in system
13～10
16The ratio of individual viable count special efficacy degradation function bacterium is added complex micro organism fungicide or its combination, 5～12mg/L microorganism growth promotor, and the Controlling System parameter is: dissolved oxygen 2～5mg/L, and water inlet pH 6.5～9.5, pH 6.5～8.5 in the system, biomass 10
9～10
16CFU is more than the dehydrogenase activity 10U.
2, the described a kind of biological reinforcing technology that improves stability of oil-contained waste water treatment system of claim 1, it is characterized in that: measure waste water quality, the method of system operational parameters and crucial biological indicator is: COD adopts microwave dissolver to measure, volatile phenol adopts potassium bromate method to measure, petroleum-type adopts determined by ultraviolet spectrophotometry, sulfide adopts iodometric determination, dissolved oxygen adopts dissolved oxygen meter to measure, sludge concentration adopts the dry weight method to determine, the sludge organism amount adopts colony counting method to measure, dehydrogenase activity adopts triphenyltetrazolium chloride (TTC) method to measure, biological community structure adopts the ERIC-PCR technology to carry out analyzing and testing, and the monitoring of QC-PCR technology qualitative, quantitative is adopted in the dynamic change of petroleum pollution special efficacy degradation function bacterium; Complex microbial inoculum or its combination are meant the commercially available microbiobacterial agent with specific degradation function or its combination; Microorganism growth promotor is meant vitamins B
12Or vitamin H or nicotinic acid or benzaminic acid or hydrochloric acid Pyridoxylamine or calcium pantothenate or dipotassium hydrogen phosphate or its combination or commercially available microorganism growth promotor product.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102491532A (en) * | 2011-12-09 | 2012-06-13 | 铁岭远能化工有限公司 | Method for biochemically treating recirculated cooling water in open way |
| CN104828954A (en) * | 2015-04-27 | 2015-08-12 | 桂林市广泽科技开发有限公司 | Microbial bacteria filter bed for rainwater/wastewater purification treatment |
| CN105236591A (en) * | 2015-11-03 | 2016-01-13 | 新疆德蓝股份有限公司 | Biological antidote |
| CN105585133A (en) * | 2014-10-28 | 2016-05-18 | 中国石油化工股份有限公司 | Bio-denitrification method for high-salt-content wastewater discharged from catalyst production process |
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| US6402941B1 (en) * | 2000-02-07 | 2002-06-11 | Wastewater Biological Solutions, Corp | Apparatus for biological treatment of environmental contaminants and waste |
| CN1218891C (en) * | 2002-03-14 | 2005-09-14 | 广东省微生物研究所 | Biological intensified process for treating sewage generated in preparing gas from oil |
| US20040200773A1 (en) * | 2003-04-08 | 2004-10-14 | Gibbs Clifford Lynn | Microbial generator for bioaugmentation of wastewater streams, wastewater bodies, groundwaters and other aqueous discharges |
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| CN102491532A (en) * | 2011-12-09 | 2012-06-13 | 铁岭远能化工有限公司 | Method for biochemically treating recirculated cooling water in open way |
| CN105585133A (en) * | 2014-10-28 | 2016-05-18 | 中国石油化工股份有限公司 | Bio-denitrification method for high-salt-content wastewater discharged from catalyst production process |
| CN105621624A (en) * | 2014-10-28 | 2016-06-01 | 中国石油化工股份有限公司 | Denitriding method for ammonia-containing wastewater discharged in acrylic fiber production process |
| CN105585133B (en) * | 2014-10-28 | 2018-07-03 | 中国石油化工股份有限公司 | The biological denitrification method of the high saline sewage of catalyst production process discharge |
| CN105621624B (en) * | 2014-10-28 | 2018-10-12 | 中国石油化工股份有限公司 | A kind of denitrogenation method of acrylic fiber production process process discharge ammonia-containing water |
| CN104828954A (en) * | 2015-04-27 | 2015-08-12 | 桂林市广泽科技开发有限公司 | Microbial bacteria filter bed for rainwater/wastewater purification treatment |
| CN105236591A (en) * | 2015-11-03 | 2016-01-13 | 新疆德蓝股份有限公司 | Biological antidote |
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