CN108483621A - A kind of optimal region and method of adjustment of determining sewage disposal multi-section water-inlet technique - Google Patents

A kind of optimal region and method of adjustment of determining sewage disposal multi-section water-inlet technique Download PDF

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CN108483621A
CN108483621A CN201810343613.3A CN201810343613A CN108483621A CN 108483621 A CN108483621 A CN 108483621A CN 201810343613 A CN201810343613 A CN 201810343613A CN 108483621 A CN108483621 A CN 108483621A
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oxygen consumption
consumption rate
ahrt
ourn
ourc
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CN108483621B (en
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李志华
杭朝曦
秋亮
韩冬
李姝凝
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Qinhuangdao Zhongyu road Tongda Environmental Protection Technology Co.,Ltd.
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Xian University of Architecture and Technology
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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
    • C02F3/006—Regulation methods for biological treatment
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q10/00—Administration; Management
    • G06Q10/04—Forecasting or optimisation specially adapted for administrative or management purposes, e.g. linear programming or "cutting stock problem"

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Abstract

The invention discloses a kind of optimal regions and method of adjustment of determining sewage disposal multi-section water-inlet technique, including：The concentration of activated sludge to be measured is measured, breathing collection of illustrative plates test is carried out, respectively obtains 5 oxygen consumption rate：OURs, OURq, OURe, OURen and OURenc；Determine non-aerobic hydraulic detention time minimum value, heterotroph oxygen consumption rate minimum value and autotrophic bacterium oxygen consumption rate minimum value in different multi-section water-inlet techniques；With mapping software development relational graph；Relational graph is divided into different zones；It determines that the region for the condition that meets is sewage disposal optimal region, heterotroph oxygen consumption rate is adjusted by non-aerobic hydraulic detention time variation and autotrophic bacterium oxygen consumption rate is close to optimal region.This method can adjust operating parameter according to oxygen consumption rate, improve treatment effeciency, for the optimization of sewage treatment plant, even running and energy-saving etc. provide a kind of feasible method.

Description

A kind of optimal region and method of adjustment of determining sewage disposal multi-section water-inlet technique
Technical field
The invention belongs to sewage treatment fields, are related to one kind by the relationship analysis between OUR and AHRT, obtain at sewage The method managed the optimum operating condition region of multi-section water-inlet technique, and Optimal regulation and control is carried out by controlling AHRT.
Background technology
Most cities sanitary sewage in China's is all low C/N than sewage at present, and traditional activated sludge process is handling low C/N Sewage is often often unable to do what one wishes, faces the problems such as carbon source is insufficient, and runing adjustment is complicated, costly.
Many scholars are in order to solve the problems, such as that sewage plant carbon source is insufficient, it is proposed that many improved technologies.Optimize profit With carbon source, efficiently removed while being completed at the same time denitrogenation and dephosphorization.But due to process tuning parameters complexity, it can not know not With the optimized parameter under multi-section water-inlet technique difference flow condition, when actual sewage treatment plant implements, there are larger to be stranded It is difficult.It is therefore proposed that a kind of accurately and efficiently obtaining optimal region using OUR and AHRT, and simply operating mode tune is carried out using AHRT The method of section becomes the technical barrier of current urgent need to resolve.
Invention content
To solve drawbacks described above existing in the prior art, obtained using technological parameter the purpose of the present invention is to provide a kind of To optimum operating condition region, the method that the variation of operating parameter carries out Optimal regulation and control is controlled.In different multi-section water-inlet technique, lead to The relationship analysis between OUR and AHRT is crossed, obtains the distributed areas under different operating modes, and find out optimal region, passes through regulation and control The size of AHRT, influences OURc and OURn, to carry out optimal adjustment, can be used for the optimal tune of complicated multi-section water-inlet technique Control.
The present invention is realized by following technical proposals.
A kind of optimal region and method of adjustment of determining sewage disposal multi-section water-inlet technique, include the following steps：
1) the sewage plant activated sludge without any processing is taken；
2) breathing collection of illustrative plates test is carried out to sewage plant activated sludge, respectively obtains 5 oxygen consumption rate：Present situation oxygen consumption rate Oxygen consumption rate OURen and total oxygen consumption rate after OURs, accurate endogenous oxygen consumption rate OURq, endogenous oxygen consumption rate OURe plus nitrogen source OURenc；
3) non-aerobic hydraulic detention time AHRT minimum values AHRT in different sewage disposal multi-section water-inlet technique is determinedmin、 Heterotroph oxygen consumption rate minimum value OURcminWith autotrophic bacterium oxygen consumption rate minimum value OURnmin；
4) using non-aerobic hydraulic detention time AHRT as X-axis, with heterotroph oxygen consumption rate OURc and autotrophic bacterium oxygen consumption rate OURn is respectively Y-axis, goes out relational graph with mapping software development；
5) according to non-aerobic hydraulic detention time AHRT minimum values AHRTmin, heterotroph oxygen consumption rate minimum value OURcminWith Autotrophic bacterium oxygen consumption rate minimum value OURnminRelational graph is divided into different zones by curve；
6) region for meeting following conditions is sewage disposal optimal region：
Meet AHRT simultaneously>AHRTmin、OURc>OURcmin、OURn>OURnminRegion；
7) by control technique in non-aerobic hydraulic detention time AHRT variation, adjust heterotroph oxygen consumption rate OURc and Autotrophic bacterium oxygen consumption rate OURn is close to optimal region.
Further, in the step 2), the detailed process of breathing collection of illustrative plates test is：
It takes sludge 0.3L in sewage plant aeration tank and is diluted to 1.2L with tap water, measure scene OURs；Later by sludge Sample washes mud 3 times with buffer solution PBS, measures sludge by stirring 15s, precipitating 10min, supernatant is gone to be settled to 0.6L Accurate endogenous OURq；Then active sludge intermixture in reactor is settled to 1.2L with tap water, by being aerated to mud sample 2h measures its endogenous OURe, and the ammonium chloride for adding 50g/L surveys OURen=OURe+OURn, is eventually adding the anhydrous second of 200g/L Sour sodium ensures that matrix is sufficient, measures total respiratory rate OURenc=OURe+OURc+OURn.
Further, the OURc and OURn is heterotroph respiratory rate and autotrophic bacterium respiratory rate respectively.
Further, the OURcminShould meet the value-added minimum respiration of oxygen consumption rate of activated sludge own growth； OURnminIt is the minimum respiration of oxygen consumption rate of autotrophic bacterium when technique meets minimum denitrogenation requirement；AHRTminRepresentative meets COD and is detesting The minimum non-aerobic hydraulic detention time that oxygen and anoxic zone rationally utilize.
Further, the mode of non-aerobic hydraulic detention time AHRT is adjustment inflow, regurgitant volume in the modulation process And tankage.
The present invention has the following advantages：
1) multi-section water-inlet process conditions optimized operation section quick and precisely, is found out.
Based on the determination of technological parameter OUR and AHRT, the technique optimum condition region can be quickly and accurately judged, it will The operating mode of deviation carries out process control.
2) control methods are simple and quick.
Regulated and controled by the operating parameter to technique so that AHRT changes, it is made to be adjusted to optimum operating condition region.
3) economical and practical, it is applied widely.
The present invention can alleviate the problem of sewage plant carbon source deficiency, and multi-section water-inlet technique in sewage disposal is enable to carry out efficiently Using carbon source, efficiently removed while being completed at the same time denitrogenation and dephosphorization, economical and effective.
Multi-section water-inlet technique in the sewage disposal of most of operations is present invention can be suitably applied to, it can also be according to inflow, water quality The variation of characteristic and environmental condition, flexible adjustment water inlet ratio, reflux ratio and pool capacity are a kind of effectively sides to reach optimum condition The method for helping sewage plant management operating.
Description of the drawings
Attached drawing described herein is used to provide further understanding of the present invention, and is constituted part of this application, not Inappropriate limitation of the present invention is constituted, in the accompanying drawings：
Fig. 1 is MAAO process principle figures；
Fig. 2 is MAAO technological parameter block plans.
Specific implementation mode
Below in conjunction with attached drawing and specific embodiment, the present invention will be described in detail, herein illustrative examples of the invention And explanation is used for explaining the present invention, but it is not as a limitation of the invention.
Present invention determine that the optimal region and method of adjustment of sewage disposal multi-section water-inlet technique, include the following steps：
1) the sewage plant activated sludge without any processing is taken；
2) breathing collection of illustrative plates test is carried out to sewage plant activated sludge, respectively obtains 5 oxygen consumption rate：Present situation oxygen consumption rate Oxygen consumption rate OURen and total oxygen consumption rate after OURs, accurate endogenous oxygen consumption rate OURq, endogenous oxygen consumption rate OURe plus nitrogen source OURenc；
Breathing the detailed process that collection of illustrative plates is tested is：
It takes sludge 0.3L in sewage plant aeration tank and is diluted to 1.2L with tap water, measure scene OURs；Later by sludge Sample washes mud 3 times with buffer solution PBS, measures sludge by stirring 15s, precipitating 10min, supernatant is gone to be settled to 0.6L Accurate endogenous OURq；Then active sludge intermixture in reactor is settled to 1.2L with tap water, by being aerated to mud sample 2h measures its endogenous OURe, and the ammonium chloride for adding 50g/L surveys OURen=OURe+OURn, is eventually adding the anhydrous second of 200g/L Sour sodium ensures that matrix is sufficient, measures total respiratory rate OURenc=OURe+OURc+OURn.
Wherein, OURc and OURn is heterotroph respiratory rate and autotrophic bacterium respiratory rate respectively.
3) non-aerobic hydraulic detention time minimum value (AHRT in multi-section water-inlet technique is determined in different sewage disposalsmin)、 OURcmin、OURnmin；Wherein, OURcminShould meet the value-added minimum respiration of oxygen consumption rate of activated sludge own growth； OURnminIt is the minimum respiration of oxygen consumption rate of autotrophic bacterium when technique meets minimum denitrogenation requirement；AHRTminRepresentative meets COD and is detesting The minimum non-aerobic hydraulic detention time that oxygen and anoxic zone rationally utilize.
4) it is respectively Y-axis with OURc and OURn using AHRT as X-axis, goes out relational graph with mapping software development；
5) according to AHRTmin、OURcminAnd OURnminRelational graph is divided into different zones by curve；
6) region for meeting following conditions is sewage disposal optimal region：
Meet AHRT simultaneously>AHRTmin、OURc>OURcmin、OURn>OURnminRegion；
7) by controlling the variation of AHRT in technique, and then OURc and OURn is influenced, adjusts OURc and OURn to optimal area Domain is close.
The mode of non-aerobic hydraulic detention time AHRT is specially in modulation process：Adjust inflow, regurgitant volume and pool capacity Amount.
Effect is further illustrated the present invention below by specific embodiment.
The application of embodiment MAAO techniques is as shown in Figure 1.
1) it is sampled to deriving from sludge in the MAAO process spent waters processing plant aeration tank of Shaanxi；
2) the WBM400 type sewage disposal wisdom that selection Xi'an Lv Biao water environments Science and Technology Ltd. provides runs work station Instrument as detection sludge OUR.It takes sludge 0.3L in sewage plant aeration tank and is diluted to 1.2L with tap water, measure scene OURs；Mud sample is washed by stirring 15s, precipitating 10min, supernatant is gone to be settled to 0.6L with buffer solution (PBS) later Mud 3 times measures the endogenous OURq of standard of sludge；Then active sludge intermixture in reactor is settled to 1.2L with tap water, led to It crosses and its endogenous OURe is measured to mud sample aeration 2h, the ammonium chloride for adding 50g/L surveys OURen=OURe+OURn, finally adds Enter the anhydrous sodium acetate of 200g/L, ensures that matrix is sufficient, measure total respiratory rate OURenc=OURe+OURc+OURn；Respectively To 5 oxygen consumption rate：It is consumed after present situation oxygen consumption rate OURs, accurate endogenous oxygen consumption rate OURq, endogenous oxygen consumption rate OURe plus nitrogen source Oxygen rate OURen and total oxygen consumption rate OURenc；
3) in MAAO treatment process, AHRT is determinedmin、OURcminAnd OURnminParameter values.OURCminValue is 0.24mgO2·L-1·min-1, OURnminValue is 0.12mgO2·L-1·min-1, AHRTminIt is the bigger the better in process, generally In MAAO techniques, COD can reach the reasonable utilization of COD in minimum 60% or more consumption in non-aerobic zone.It selectes at this time AHRTminValue is 95.8min.
4) it is respectively Y-axis with OURc and OURn using AHRT as X-axis, goes out relational graph with mapping software development, and be divided into difference Region, as shown in Figure 2；
5) according to AHRTmin、OURcminAnd OURnminRelational graph is divided into different zones by curve；
6) from figure 2 it can be seen that 1. region is optimal region, wherein AHRT is larger, can complete COD in anaerobism and It largely removes, while OURc is smaller on the basis of meeting own growth proliferation, will not occur very with autotrophic bacterium under anoxia condition Big competition, OURn is larger can higher nitric efficiency, so the region for meeting following conditions is the optimal area of sewage disposal Domain：Meet AHRT simultaneously>AHRTmin、OURc>OURcmin、OURn>OURnminRegion；
7) by controlling the variation of AHRT in technique, and then OURc and OURn is influenced, it is close to optimal region adjusts it.It adjusts Control AHRT mode be specially：Adjust inflow, regurgitant volume and tankage.
Embodiment is analyzed：
We can be found that under existing fixed condition of water quality, representated by the breathing collection of illustrative plates parameter and AHRT of different zones MAAO processing performances the characteristics of, determine each area size and position.Fig. 2 is divided into 6 regions, is by AHRT respectivelymin、 OURcminAnd OURnminIt distinguishes.
1. number region is the reasonable disposition region under existing condition of water quality, AHRT is bigger, can complete COD and largely consume Target in anaerobic/anoxic area, OURc are not very littles, can complete growth increment necessary to sludge and require, OURn is larger, can To complete denitrogenation requirement, operating mode is represented as operating mode one and operating mode two, in this area, AHRT is bigger with OURn, then system denitrogenation Ability is higher.1. a number region is to meet AHRT simultaneously>AHRTmin、OURc>OURcmin、OURn>OURnminRegion, be optimal area Domain.
2. the AHRT in number region is too short, the reasonable disposition of COD can not be completed, certain COD can be consumed in aerobic tank.At this time OURc is too big, and OURn is too small, and denitrification effect is excessively poor, represents operating mode as operating mode three and operating mode four.3. number region and 4. number region All it is the different subregions 2. under number region, is AHRT too small, OURc is too big, but the 3. OURn higher in number region, meets one Fixed denitrogenation requirement, and 4. the OURn in number region is relatively low, nitric efficiency is relatively low.Most effective adjusting method is to pass through reduction at this time Inflow or increase pool capacity reach optimal region to increase AHRT；
Generally be not in such situation 5. the AHRT in number region is larger, but OURc or OURn very littles；
6. the AHRT in number region is suitable, OURn also meets the requirement of denitrogenation, but the AHRT of such situation is especially big, due to Sludge anaerobic/anoxic with it is aerobic under the conditions of energy conversion efficiency it is different, complete to must have one when necessary growing multiplication Fixed OURc requirements, and the OURc of one's respective area is too small, it is unfavorable to be grown to sludge, and such case represents operating mode as operating mode five.This When, it needs under conditions of ensureing enough AHRT, to reduce AHRT, increases inflow or reduce tankage, to increase OURc, to ensure the growth of sludge.
MAAO process operation operating mode tables and operating parameter are shown in Table 1.
1 MAAO process operation operating mode tables of table and operating parameter
The invention is not limited in above-described embodiments, on the basis of technical solution disclosed by the invention, the skill of this field For art personnel according to disclosed technology contents, one can be made to some of which technical characteristic by not needing performing creative labour A little to replace and deform, these are replaced and deformation is within the scope of the invention.

Claims (5)

1. a kind of optimal region and method of adjustment of determining sewage disposal multi-section water-inlet technique, which is characterized in that including following steps Suddenly：
1) the sewage plant activated sludge without any processing is taken；
2) breathing collection of illustrative plates test is carried out to sewage plant activated sludge, respectively obtains 5 oxygen consumption rate：Present situation oxygen consumption rate OURs, Oxygen consumption rate OURen and total oxygen consumption rate OURenc after accurate endogenous oxygen consumption rate OURq, endogenous oxygen consumption rate OURe plus nitrogen source；
3) non-aerobic hydraulic detention time AHRT minimum values AHRT in different multi-section water-inlet technique is determinedmin, heterotroph oxygen consumption speed Rate minimum value OURcminWith autotrophic bacterium oxygen consumption rate minimum value OURnmin；
4) using non-aerobic hydraulic detention time AHRT as X-axis, with heterotroph oxygen consumption rate OURc and autotrophic bacterium oxygen consumption rate OURn Respectively Y-axis goes out relational graph with mapping software development；
5) according to non-aerobic hydraulic detention time AHRT minimum values AHRTmin, heterotroph oxygen consumption rate minimum value OURcminAnd autotrophy Bacterium oxygen consumption rate minimum value OURnminRelational graph is divided into different zones by curve；
6) region for meeting following conditions is sewage disposal optimal region：
Meet AHRT simultaneously>AHRTmin、OURc>OURcmin、OURn>OURnminRegion；
7) by controlling the variation of non-aerobic hydraulic detention time AHRT in technique, heterotroph oxygen consumption rate OURc and autotrophy are adjusted Bacterium oxygen consumption rate OURn is close to optimal region.
2. the optimal region and method of adjustment of determining sewage disposal multi-section water-inlet technique according to claim 1, feature It is, in the step 2), the detailed process of breathing collection of illustrative plates test is：
It takes sludge 0.3L in sewage plant aeration tank and is diluted to 1.2L with tap water, measure scene OURs；Later by mud sample By stirring 15s, precipitating 10min, supernatant is gone to be settled to 0.6L, washes mud 3 times with buffer solution PBS, measure in the standard of sludge Source OURq；Then active sludge intermixture in reactor is settled to 1.2L with tap water, is surveyed by being aerated 2h to mud sample Its fixed endogenous OURe, the ammonium chloride for adding 50g/L survey OURen=OURe+OURn, are eventually adding the anhydrous acetic acid of 200g/L Sodium ensures that matrix is sufficient, measures total respiratory rate OURenc=OURe+OURc+OURn.
3. the optimal region and method of adjustment of determining sewage disposal multi-section water-inlet technique according to claim 2, feature It is, the OURc and OURn are heterotroph respiratory rate and autotrophic bacterium respiratory rate respectively.
4. the optimal region and method of adjustment of determining sewage disposal multi-section water-inlet technique according to claim 1, feature It is, the OURcminShould meet the value-added minimum respiration of oxygen consumption rate of activated sludge own growth；OURnminIt is that technique is full The minimum respiration of oxygen consumption rate of autotrophic bacterium when minimum denitrogenation requires in the Effluent criteria of sufficient national regulation；AHRTminIt represents and meets The minimum non-aerobic hydraulic detention time that COD is rationally utilized in anaerobism and anoxic zone.
5. the optimal region and method of adjustment of determining sewage disposal multi-section water-inlet technique according to claim 1, feature It is, the mode of non-aerobic hydraulic detention time AHRT is by adjusting inflow, regurgitant volume and pool capacity in the modulation process Amount.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112573641A (en) * 2020-11-20 2021-03-30 中国环境科学研究院 Sewage treatment capacity determining method and device
CN113571137A (en) * 2021-06-25 2021-10-29 上海环境卫生工程设计院有限公司 Method for determining influence of environmental pH value on heterotrophic bacteria activity by adopting mathematical model

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1492624A (en) * 1975-03-19 1977-11-23 Atlas Copco Ab Inhibiting sedimentation in water
US6485647B1 (en) * 1999-03-17 2002-11-26 David A. Potts Method and apparatus for treating leach fields
CN104914213A (en) * 2015-05-13 2015-09-16 西安建筑科技大学 Method for early warning of activated sludge filamentous bacterium expansion
CN105699601A (en) * 2016-03-16 2016-06-22 西安建筑科技大学 Method for determining activated sludge treatment capacity
CN106745822A (en) * 2017-02-23 2017-05-31 西安建筑科技大学 It is a kind of that method of the active sludge microorganism dormancy with being lost in is differentiated based on breathing collection of illustrative plates

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1492624A (en) * 1975-03-19 1977-11-23 Atlas Copco Ab Inhibiting sedimentation in water
US6485647B1 (en) * 1999-03-17 2002-11-26 David A. Potts Method and apparatus for treating leach fields
CN104914213A (en) * 2015-05-13 2015-09-16 西安建筑科技大学 Method for early warning of activated sludge filamentous bacterium expansion
CN105699601A (en) * 2016-03-16 2016-06-22 西安建筑科技大学 Method for determining activated sludge treatment capacity
CN106745822A (en) * 2017-02-23 2017-05-31 西安建筑科技大学 It is a kind of that method of the active sludge microorganism dormancy with being lost in is differentiated based on breathing collection of illustrative plates

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112573641A (en) * 2020-11-20 2021-03-30 中国环境科学研究院 Sewage treatment capacity determining method and device
CN113571137A (en) * 2021-06-25 2021-10-29 上海环境卫生工程设计院有限公司 Method for determining influence of environmental pH value on heterotrophic bacteria activity by adopting mathematical model

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