CN103488117A - Sewage plant feed water toxicity early warning and monitoring device - Google Patents
Sewage plant feed water toxicity early warning and monitoring device Download PDFInfo
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- CN103488117A CN103488117A CN201310459172.0A CN201310459172A CN103488117A CN 103488117 A CN103488117 A CN 103488117A CN 201310459172 A CN201310459172 A CN 201310459172A CN 103488117 A CN103488117 A CN 103488117A
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- early warning
- preaeration
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- sewage
- reactor
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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 sewage plant feed water toxicity early warning and monitoring device. The sewage plant feed water toxicity early warning and monitoring device comprises a sewage supplying system, a sludge supplying system, a pre-aeration complete mixing reactor, a complete mixing early warning reactor, a PLC system and a carbon source storage device. The sewage supplying system and the sludge supplying system are respectively connected with the pre-aeration complete mixing reactor through a sewage pump and a sludge pump. Mixed liquid is pumped from the pre-aeration complete mixing reactor through a peristaltic pump and enters the complete mixing early warning reactor through a disc silicone tube. A DO1 electrode connected with a DO1 sensor and a DO2 electrode connected with a DO2 sensor are utilized for monitoring the DO value of the pre-aeration complete mixing reactor and the DO value of the complete mixing early warning reactor respectively. The feed water toxicity of a sewage plant can be monitored in real time, and the toxicity effect on the activated sludge of the sewage plant from the feed water is truly reflected. The sewage plant feed water toxicity early warning and monitoring device is convenient to operate and maintain, low in cost and suitable for monitoring the feed water toxicity of the sewage plant on line.
Description
Technical field
The present invention relates to sewage treatment area, especially contain the sewage of industrial waste water, particularly a kind of monitoring device of on-line continuous monitoring Sewage Plant water inlet toxicity.
Background technology
In current water technology technique, activated sludge process is, the advantage such as operating cost cheap, maintenance convenient simple with its treatment scheme and be widely used in each large, medium and small sewage treatment plant still.Quickening along with China's industrial development step, the increasing year by year of discharged volume of industrial waste water, undressed industrial waste water is incorporated to city domestic sewage, and to enter the situation of sewage treatment plant comparatively general, and wherein may contain a large amount of Ecotoxicology materials, these toxicants can suppress the eubolism process of active sludge microorganism, cause sewage disposal process unstable, the situation that effluent quality is not up to standard, even may cause whole activated Sludge System collapse, then may carry out the cultivation work of time and effort consuming, bring great inconvenience to the daily operation and management of Sewage Plant.Therefore, it is extremely important that the research and development of municipal wastewater treatment plant water inlet Toxicity Monitoring equipment shows, rely on water inlet Toxicity Monitoring equipment can understand rapidly water inlet toxicity situation, and take corresponding counter-measure for the water inlet of different toxic degrees, at utmost alleviate the inhibiting effect of toxicant to active sludge microorganism, guarantee water outlet continous-stable qualified discharge.
The technology of current investigation municipal wastewater treatment plant water inlet toxic action has that ATP is luminous, enzyme inhibition, the methods for toxicity monitoring such as Microtox, Hatox-1800, yet, the principles such as luminous and bioelectric current variation of these methods based on molecular biology test, photobacteria, its tested object and test condition are fully different from actual sewage treatment plant activated Sludge System, and test result can not truly reflect the suppressed situation of Microbial Communities in Activated Sludge; Curent change degree and toxicant are not high to the inhibition degree linear dependence of microorganism, and representativeness is not strong, can not carry out the on-line continuous monitoring equally.
Respiratory rate (Oxygen Uptake rate), oxygen consumption rate when to be that active sludge microorganism is aerobic utilize organism, it is the theory index that characterizes the active sludge microorganism activity, the situation of change that is active sludge OUR just can be reacted the suppressed property of microorganism degree, and then can judge in water inlet whether contain active sludge microorganism toxicant and toxic degree.The saprobe Toxicity Monitoring equipment of developing on this principle basis is less, and there is system complex in the equipment of having developed, continuous monitoring is unstable, maintenance requirement is high, the problems such as systematic error between two dissolved oxygen electrode equipment.
Summary of the invention
The object of the present invention is to provide a kind of stable effectively device to be monitored Sewage Plant water inlet toxicity, this monitoring device be take OUR as principle, and adopting the DO inhibiting rate is that index is carried out Real-Time Monitoring to Sewage Plant water inlet toxicity.
The present invention is achieved in that Sewage Plant water inlet toxicity prior-warning device comprises sewage feed system, mud feed system, preaeration complete, mixes early warning reactor, PLC system and carbon source reservoir fully, and described sewage feed system is connected with the preaeration complete by sewage pump, sludge pump respectively with the mud feed system; , enter and mix the early warning reactor fully through the disc type silicone tube from preaeration complete pumping mixed liquor by peristaltic pump; Utilize and DO
1the DO that sensor connects
1electrode and and DO
2the DO that sensor connects
2electrode is monitored preaeration complete and the DO value of mixing fully in the early warning reactor respectively; DO
1sensor and DO
2sensor is connected with the PLC system, and the data of monitoring are gathered and judgement; The carbon source reservoir quantitatively injects sodium acetate by pipeline in the preaeration complete, maintains a certain amount of COD content.
Preaeration complete bottom is equipped with the first magnetic stir bar, by magnetic stirring apparatus, controls rotating speed, and aerator connects aeration head by aeration tube provides sufficient dissolved oxygen DO for the mixed liquor in the preaeration complete.
Store certain density sodium acetate solution in the carbon source reservoir, quantitatively add in the preaeration complete by pipeline.
Disc type silicone tube two ends are connected with respectively the preaeration complete and mix the early warning reactor fully, and make mixed liquor continuous flow by peristaltic pump; Utilize DO
1electrode and DO
2electrode is monitored preaeration complete and the DO value of mixing fully in the early warning reactor respectively.
Mix early warning reactor wall surface fully and be equipped with turbulent baffle, mixed liquor is mixed under the second magnetic stir bar beating action more even, avoid occurring circular flow, top is equipped with capping, make that to mix early warning reactor environment of living in fully airtight, avoid the interference of outside air to monitoring.
The step of utilizing this Sewage Plant water inlet toxicity prior-warning device to be monitored sewage is:
(1) by mud discharge Q
1with discharge of sewage Q
2control as Q
1: Q
2=1-2:3, make to enter that to contain MLSS in the mixed liquor of preaeration complete be 1000mg/L, open aerator, and regulating tolerance, to make the DO value in the preaeration complete be 5.5-6.0mg/L, the hydraulic detention time (HRT) of controlling mixed liquor is 1～3min, guarantees the abundant contact reaction of sewage and mud by magnetic stirring apparatus.
(2) sewage is replaced as to the clear water of placing more than 2 hours under step (1) equal conditions, uses DO simultaneously
2the DO value that electrode pair mixes in the early warning reactor is fully detected and record, calculates DO0=DO
q-DOw (DO
0for the dissolved oxygen DO that mixed liquor consumes, DO
qthe DO value monitored when passing into clear water, DO
wthe DO value monitored when passing into sewage).
(3) use peristaltic pump that mixed liquor is pumped into and mixes fully in the early warning reactor by disc type silicone tube 22, and to control its HRT be 2min; Controlling the amount that the carbon source reservoir makes to be added to sodium acetate in the preaeration complete is 100 mg/L COD;
(4) utilize DO
1the DO that sensor connects
1mixed liquor in electrode pair preaeration complete carries out continuous monitoring, and controlling DO is 5.5-6.0 mg/L; Utilize DO
2the DO that sensor connects
2dO in the electrode pair complete carries out continuous monitoring, and by the PLC system, the data that gather is calculated and analyzed.
(5) the PLC system is to DO
2the data of Sensor monitoring are calculated and are analyzed, according to the formula of implanting in advance: DO
y%=(DO
2-DO
1)/DO
0* 100 calculate DO
y% (DO
0amount, DO for the system consumption dissolved oxygen DO
1for toxicant impacts front dissolved oxygen levels, DO
2for toxicant impact after dissolved oxygen levels), and with default DO inhibiting rate DO
y1, DO
y2, DO
y3relatively:
Work as DO
y≤ DO
y1, not report to the police, the pilot lamp green, show not contain the mud toxicant in water.
Work as DO
y1<DO
y≤ DO
y2, to report to the police, pilot lamp is orange, shows to contain the mud toxicant in water, and toxicity is less, need to pay general attention.
Work as DO
y2<DO
y≤ DO
y3, to report to the police, the pilot lamp yellow, show to contain the mud toxicant in water, and toxicity is larger, need take appropriate measures.
Work as DO
y>=DO
y3, to report to the police, the pilot lamp redness, show to contain the mud toxicant in water, and toxicity is very large, the emergency plan that need to take Sewage Plant to be hit.
In step (2), the mixed liquor DO value of controlling in the preaeration complete is 5.5-6.0mg/L, and HRT is 1-3min (need to mix the early warning reactor fully mate).
In step (3), disc type silicone tube diameter is 10mm, and length is 2.8m, coils in the shape of a spiral in organic periphery; Mix early warning reactor wall surface fully and be equipped with turbulent baffle, mixed liquor is mixed under the second magnetic stir bar beating action more even, avoid occurring circular flow, top is equipped with capping, make that to mix early warning reactor environment of living in fully airtight, avoid the interference of outside air to monitoring.
In step (5), default DO
y% is respectively, DO
y1=10%, DO
y2=30%, DO
y3=50%.
Compared with prior art, advantage of the present invention is:
(1) Real-time Collection biochemistry pool mud and settling pit water inlet, monitoring result is representative strong; (2) mud fully contacts with sewage in advance, increases duration of contact, reacts more complete; (3) increase the preaeration stage, reduce impact system produced into the water dissolved oxygen DO; (4) use single dissolved oxygen electrode, reduce interelectrode systematic error; (5) increase the carbon source replenishment system, avoid causing the inaccurate situation of toxicity early warning and monitoring result because of the water-inlet carbon source deficiency.
The accompanying drawing explanation
Fig. 1 is embodiment of the present invention Sewage Plant water inlet toxicity prior-warning device structural representation.
Mark in figure: 1-sewage feed system; 2-mud feed system; The 3-sewage pump; The 4-sludge pump; 5-preaeration complete; 6,21-magnetic stirring apparatus; The 7-aeration head; 8-the first magnetic stir bar; The 9-aerator; 10-DO
1sensor; 11-DO
1electrode; The 12-PLC system; 13-DO
2sensor; 14-DO
2electrode; The 15-capping; The 16-overflow vent; The 17-turbulent baffle; 18-mixes the early warning reactor fully; 19-the second magnetic stir bar; The 20-peristaltic pump; 22-disc type silicone tube; 23-carbon source reservoir.
Real-Time Monitoring when Fig. 2 is the embodiment of the present invention Cu=5 mg/L during Cu (II) bombardment by ions is figure as a result.
Real-Time Monitoring when Fig. 3 is the embodiment of the present invention Cu=10 mg/L during Cu (II) bombardment by ions is figure as a result.
Fig. 4 is embodiment of the present invention phenol=10 mg/L phenol Real-Time Monitoring figure as a result while impacting.
Fig. 5 is embodiment of the present invention phenol=20 mg/L phenol Real-Time Monitoring figure as a result while impacting.
Embodiment
Embodiment:
As shown in Figure 1, Sewage Plant water inlet toxicity prior-warning device comprises sewage feed system 1, mud feed system 2, preaeration complete 5, mixes early warning reactor 18, PLC system 12 and carbon source reservoir 22 fully, and described sewage feed system 1 is connected with preaeration complete 5 by sewage pump 3, sludge pump 4 respectively with mud feed system 2; , enter and mix early warning reactor 18 fully through disc type silicone tube 22 from preaeration complete 5 pumping mixed liquors by peristaltic pump 20; Utilize and DO
1the DO that sensor 10 connects
1electrode 11 and and DO
2the DO that sensor 13 connects
2 electrode 14 is monitored preaeration complete 5 and the DO value of mixing fully in early warning reactor 18 respectively; DO
1sensor 10 and DO
2sensor 13 is connected with PLC system 12, and the data of monitoring are gathered and judgement; Carbon source reservoir 23 quantitatively injects sodium acetate by pipeline in preaeration complete 5, maintains a certain amount of COD content.
Preaeration complete 5 bottoms are equipped with the first magnetic stir bar 8, by magnetic stirring apparatus 6, control rotating speed, and aerator 9 connects aeration head 7 by aeration tube provides sufficient dissolved oxygen DO for the mixed liquor in preaeration complete 5.
Store certain density sodium acetate solution in carbon source reservoir 23, quantitatively add in preaeration complete 5 by pipeline.
Disc type silicone tube 22 two ends are connected with respectively preaeration complete 5 and mix early warning reactor 18 fully, and make mixed liquor continuous flow by peristaltic pump 20, utilize DO
1electrode 11 and DO
2electrode 14 is monitored preaeration complete 5 and the DO value of mixing fully in early warning reactor 18 respectively.
Mix early warning reactor 18 inner wall surface fully and be equipped with turbulent baffle 17, mixed liquor is mixed under the second magnetic stir bar 19 beating actions more even, avoid occurring circular flow, top is equipped with capping 15, make that to mix early warning reactor 18 environment of living in fully airtight, avoid the interference of outside air to monitoring.
The step of utilizing this Sewage Plant water inlet toxicity prior-warning device to be monitored sewage is:
(1) by mud discharge Q
1with discharge of sewage Q
2control as Q
1: Q
2=1:3, make to enter in the mixed liquor of preaeration complete 5 and contain sludge concentration (MLSS) for 1000mg/L, open aerator 9, and regulating tolerance, to make the DO value in preaeration complete 5 be 5.8mg/L, the hydraulic detention time (HRT) of controlling mixed liquor is 1min, guarantees the abundant contact reaction of sewage and mud by magnetic stirring apparatus 6.
(2) under the previous step equal conditions, sewage is replaced as to the clear water of placing more than 2 hours, uses DO simultaneously
2the DO value that 14 pairs, electrode mixes in early warning reactor 18 is fully detected and record, calculates DO
0=DO
q-DO
w(DO
0for the dissolved oxygen DO that mixed liquor consumes, DO
qthe DO value monitored when passing into clear water, DO
wthe DO value monitored when passing into sewage).
(3) use peristaltic pump 20 that mixed liquor is pumped into and mixes fully in early warning reactor 18 by disc type silicone tube 22, and to control its HRT be 2min; It is 100 mg/L COD that control carbon source reservoir 23 makes its amount that adds sodium acetate;
(4) utilize DO
1the DO that sensor 10 connects
1mixed liquor in 11 pairs of preaeration completes 5 of electrode carries out continuous monitoring, and controlling DO is 5.8 mg/L; Utilize DO
2the DO that sensor 13 connects
2the DO that 14 pairs, electrode mixes in early warning reactor 18 fully carries out continuous monitoring, and calculates and analyze by the data of 12 pairs of collections of PLC system; DO
2the value sample interval is 30s.
(5) 12 couples of DO of PLC system
2the data of sensor 13 monitorings are calculated and are analyzed, according to the formula of implanting in advance: DO
y%=(DO
2-DO
1)/DO
0* 100 calculate DO
y% (DO
0amount, DO for the system consumption dissolved oxygen DO
1for toxicant impacts front dissolved oxygen levels, DO
2for toxicant impact after dissolved oxygen levels), and with default DO inhibiting rate DO
y1, DO
y2, DO
y3relatively, DO in the present embodiment
y% is respectively, DO
y1=10%, DO
y2=30%, DO
y3=50%:
Work as DO
y≤ 10%, not report to the police, the pilot lamp green, show not contain the mud toxicant in water.
As 10%<DO
y≤ 30%, to report to the police, pilot lamp is orange, shows to contain the mud toxicant in water, and toxicity is less, need to pay general attention.
As 30%<DO
y≤ 50%, to report to the police, the pilot lamp yellow, show to contain the mud toxicant in water, and toxicity is larger, need take appropriate measures.
Work as DO
y>=50%, to report to the police, the pilot lamp redness, show to contain the mud toxicant in water, and toxicity is very large, the emergency plan that need to take Sewage Plant to be hit.
Fig. 2,3 be system in variable concentrations gradient Cu (II) bombardment by ions situation (5mg/L, 10mg/L), the Real-Time Monitoring result of inhibiting rate situation.
Concrete grammar: according to implementation step, at first determine DO
0pass into subsequently sewage, after mixing the stable DO baseline of early warning reactor 18 generations fully, pass into the simulation sewage containing a certain amount of Cu (II) ion, until DO rise to high value steady after, again pass into normal sewage, the DO peak value of generation is subject to Cu (II) ion to suppress the dissolved oxygen DO discharged for mixing sludge microbe in early warning reactor 18 fully, passes through formula: DO
y%=(DO
2-DO
1)/DO
0* 100, calculate inhibiting rate, characterize the suppressed situation of mud with this, the experiment HRT that mixes early warning reactor 18 fully gets 2min.
Fig. 4,5 be system under variable concentrations gradient phenol impact condition (10mg/L, 20mg/L), the Real-Time Monitoring result of inhibiting rate situation.
Concrete grammar with Cu (II) from identical.
Claims (1)
1. Sewage Plant water inlet toxicity early warning and monitoring device, it is characterized in that Sewage Plant water inlet toxicity prior-warning device comprises sewage feed system (1), mud feed system (2), preaeration complete (5), mixes early warning reactor (18), PLC system (12) and carbon source reservoir (23) fully, described sewage feed system (1) is connected with preaeration complete (5) by sewage pump (3), sludge pump (4) respectively with mud feed system (2); , enter and mix early warning reactor (18) fully through disc type silicone tube (22) from preaeration complete (5) pumping mixed liquor by peristaltic pump (20); Utilize and DO
1the DO that sensor (10) connects
1electrode (11) and and DO
2the DO that sensor (13) connects
2electrode (14) is monitored preaeration complete (5) and the DO value of mixing fully in early warning reactor (18) respectively; DO
1sensor (10) and DO
2sensor (13) is connected with PLC system (12), and the data of monitoring are gathered and judgement; Carbon source reservoir (23) quantitatively injects sodium acetate by pipeline in preaeration complete (5), maintains a certain amount of COD content;
Preaeration complete (5) bottom is equipped with the first magnetic stir bar (8), control rotating speed by magnetic stirring apparatus (6), aerator (9) connects aeration head (7) by aeration tube provides sufficient dissolved oxygen DO for the mixed liquor in preaeration complete (5);
The carbon source reservoir stores certain density sodium acetate solution in (23), by pipeline, quantitatively adds in preaeration complete (5);
Disc type silicone tube (22) two ends are connected with respectively preaeration complete (5) and mix early warning reactor (18) fully, and make mixed liquor continuous flow by peristaltic pump (20); Utilize DO
1electrode (11) and DO
2electrode (14) is monitored preaeration complete (5) and the DO value of mixing fully in early warning reactor (18) respectively;
Mix early warning reactor (18) inner wall surface fully and be equipped with turbulent baffle (17), mixed liquor is mixed under the second magnetic stir bar (19) beating action more even, avoid occurring circular flow, top is equipped with capping (15), make that to mix early warning reactor (18) environment of living in fully airtight, avoid the interference of outside air to monitoring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310459172.0A CN103488117B (en) | 2013-10-02 | 2013-10-02 | A kind of Sewage Plant water inlet toxicity early warning and monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310459172.0A CN103488117B (en) | 2013-10-02 | 2013-10-02 | A kind of Sewage Plant water inlet toxicity early warning and monitoring device |
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| Publication Number | Publication Date |
|---|---|
| CN103488117A true CN103488117A (en) | 2014-01-01 |
| CN103488117B CN103488117B (en) | 2016-08-10 |
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ID=49828433
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310459172.0A Expired - Fee Related CN103488117B (en) | 2013-10-02 | 2013-10-02 | A kind of Sewage Plant water inlet toxicity early warning and monitoring device |
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Cited By (2)
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| CN110186970A (en) * | 2019-07-10 | 2019-08-30 | 廊坊市慧璟科技有限公司 | A kind of sewage treatment plant inflow toxicity on-line measuring device |
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2013
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Patent Citations (6)
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| US20040177664A1 (en) * | 2003-03-13 | 2004-09-16 | Roland Hale | Production of a high quality organic-based fertilizer |
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Effective date of registration: 20170907 Address after: 535400, Jiangbei Road, Ling Town, Lingshan County, Qinzhou, the Guangxi Zhuang Autonomous Region Patentee after: Lingshan city sewage treatment plant Address before: 541004 the Guangxi Zhuang Autonomous Region Guilin Construction Road No. 12 Patentee before: Guilin University of Technology |
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