CN102060361A - Physicochemical enhanced treatment method of low temperature wastewater - Google Patents
Physicochemical enhanced treatment method of low temperature wastewater Download PDFInfo
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- CN102060361A CN102060361A CN 201010560385 CN201010560385A CN102060361A CN 102060361 A CN102060361 A CN 102060361A CN 201010560385 CN201010560385 CN 201010560385 CN 201010560385 A CN201010560385 A CN 201010560385A CN 102060361 A CN102060361 A CN 102060361A
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Abstract
The invention discloses a physicochemical enhanced treatment method of low temperature wastewater, relating to a water treatment method. The invention aims to solve the problem of the existing treatment method of low temperature (<15 DEG C) wastewater that the degradation efficiency of pollutants is low and provides the physicochemical enhanced treatment of low temperature wastewater. The treatment method comprises the following steps: 1) raw water enters a mixing zone through a water inlet pipe while polyaluminium chloride used as flocculant is added in raw water at a dosing site; 2) the raw water treated by the step 1) passes through a primary flocculoreaction zone, a secondary flocculoreaction zone and a tertiary flocculoreaction zone respectively; and 3) the stable floccule obtained in the step 2) performs solid-liquid separation, the treated effluent water is discharged from the system through overflowing, and sludge is discharged from the system. in the method disclosed by the invention, a multistage control mode is adopted and the fractal dimension and the growth condition of floccule particles are controlled to overcome the defects of the control method utilizing the traditional velocity gradient G, thus the treatment effect is good and the aim of increasing the flocculoreaction efficiency and the degradation efficiency of pollutants under the low temperature condition can be achieved.
Description
Technical field
The present invention relates to a kind of water treatment method.
Background technology
At present, biological activity mud method is mainly adopted in municipal sewage treatment, through a series of biochemical reaction, releases energy step by step under the katalysis of the microorganism in activated sludge process of the organism in the sewage, and finally the inorganics with the low energy position settles out.But biological treatment need be taked certain artificial technology's measure (as aeration, reflux cycle, insulation etc.), for good environment is created in microbial growth, breeding, so that the organic contact scar thing in the sewage is degraded, removed.Because need facing, a lot of northern area sewage works reach 3-5 month low temperature environment, can influence final outflow water water quality because the decline of water temperature cause absorption property, the settling property of active sludge, the population structure of microorganism to take place to the microorganism of water temperature sensitivity.Particularly the particulate matter of high level and colloidalmaterial meeting severe inhibition microorganism biological activity in the low-temperature sewage delays biochemical reaction rate, reduces biological treatment operation stability and treating water water quality.Drawback at water temperature decline, most of sewage works adopt reduce sludge loading, increase sludge quantity, prolong dwell time of sewage or take to be incubated, operation strategy up to standard that way such as intensification is kept the water quality treatment in winter, investment and working cost have not only been increased, and wastewater treatment efficiency also seldom arrives assurance, can cause that also problem such as sludge bulking causes management inconvenience.
Summary of the invention
The objective of the invention is provides a kind of materialization enhanced processing method of low-temperature sewage in order to solve the existing inefficient problem of method contaminant degradation of handling low temperature (＜15 ℃) sewage.
A kind of materialization enhanced processing method of low-temperature sewage is as follows: one, cryogenic former water is entered the mixing zone by water inlet pipe, the medicament polymerize aluminum chloride that will flocculate simultaneously is added in the former water by the dispensing point, and the dosage of polymerize aluminum chloride is 120mg/L～150mg/L; Two, take off steady colloid and the former water of particulate is 100r/minm at stirring intensity through step 1 containing of handling
2Condition under flocculation for the first time, the reaction times is 10min, the flco particle diameter that flocculates for the first time is 0.4～0.5mm, the flco fractal dimension is 1.70, is 80r/minm at stirring intensity then
2Condition under flocculation for the second time, the reaction times is 15min, the flco particle diameter＞0.5mm that flocculates for the second time, the flco fractal dimension is 1.65, is 60r/minm at stirring intensity again
2Condition under for the third time the flocculation, the reaction times is 10min, the flco particle diameter＞0.6mm that flocculates for the third time, flco fractal dimension are 1.56; Three, handling the stable flco obtain through step 2 enters filler in the vertical settling region through thrust-augmenting nozzle and holds back the district and finish solid-liquid separation, system is discharged in water outlet overflow after the processing, and throw out slides to sludge bucket through bottom, the settling region gradient and discharges system by sludge pump with the excess sludge form; It is polymer plastic that filler described in the step 3 is held back filler used in the district.
The present invention is in conjunction with the characteristics of pre existing treatment process, adopt the Multistage Control mode, control by fractal dimension and flco particle diameter growth situation has solved the drawback of utilizing the control of conventional speed gradient G value, operation is reasonable, floor space is little, construction cost is low, treatment effect is good, has reached the purpose that improves flocculation reaction efficient and contaminant degradation efficient under the cold condition.
Description of drawings
Fig. 1 is the schema of the materialization enhanced processing method of low-temperature sewage of the present invention.
Embodiment
Technical solution of the present invention is not limited to following cited embodiment, also comprises the arbitrary combination between each embodiment.
Embodiment one: the materialization enhanced processing method of a kind of low-temperature sewage of present embodiment is as follows: one, cryogenic former water is entered the mixing zone by water inlet pipe, the medicament polymerize aluminum chloride that will flocculate simultaneously is added in the former water by the dispensing point, and the dosage of polymerize aluminum chloride is 120mg/L～150mg/L; Two, take off steady colloid and the former water of particulate is 100r/minm at stirring intensity through step 1 containing of handling
2Condition under flocculation for the first time, the reaction times is 10min, the flco particle diameter that flocculates for the first time is 0.4～0.5mm, the flco fractal dimension is 1.70, is 80r/minm at stirring intensity then
2Condition under flocculation for the second time, the reaction times is 15min, the flco particle diameter＞0.5mm that flocculates for the second time, the flco fractal dimension is 1.65, is 60r/minm at stirring intensity again
2Condition under for the third time the flocculation, the reaction times is 10min, the flco particle diameter＞0.6mm that flocculates for the third time, flco fractal dimension are 1.56; Three, handling the stable flco obtain through step 2 enters filler in the vertical settling region through thrust-augmenting nozzle and holds back the district and finish solid-liquid separation, system is discharged in water outlet overflow after the processing, and throw out slides to sludge bucket through bottom, the settling region gradient and discharges system by sludge pump with the excess sludge form.
Main processes is in the present embodiment: former water is put forward mode through gravity or pump and is entered the mixing zone continuously, add simultaneously that the flocculation medicament is finished short mix and particle takes off surely in the mixing zone, taking off steady back particle and colloidalmaterial rises gradually, enter one-level flocculation reaction district and finish the quick growth of flco, this stage flco particle diameter is 0.4～0.5mm, the flco fractal dimension is 1.70, then enter secondary flocculation reaction district and finish the further growth of flco, this stage flco particle diameter＞0.5mm, the flco fractal dimension is 1.65, last sewage enters three grades of flocculation reaction districts and finishes stabilized growth, this stage flco particle diameter＞0.6mm, and the flco fractal dimension is 1.56.The stable flco that classified flocculation reaction forms is finished solid-liquid separation through the district that holds back that thrust-augmenting nozzle enters in the vertical settling region, and system is discharged in the treating water overflow, and throw out slides to sludge bucket through bottom, the settling region gradient, discharges system by sludge pump with the excess sludge form.
Embodiment two: present embodiment and embodiment one are different is that the dosage of polymerize aluminum chloride in the step 1 is 130mg/L～140mg/L.Other is identical with embodiment one.
Embodiment three: present embodiment and embodiment one are different is that the dosage of polymerize aluminum chloride in the step 1 is 145mg/L.Other is identical with embodiment one.
Embodiment four: present embodiment and embodiment one are different is that to hold back filler used in the district be polymer plastic to filler described in the step 3.Other is identical with embodiment one.
Embodiment five: the materialization enhanced processing method in conjunction with a kind of low-temperature sewage in Fig. 1 present embodiment is as follows: one, cryogenic former water is entered mixing zone 3 by water inlet pipe 1, the medicament polymerize aluminum chloride that will flocculate simultaneously is added in the former water by dispensing point 2, and the dosage of polymerize aluminum chloride is 120mg/L～150mg/L; Two, take off steady colloid and the former water of particulate enters fractional order reaction district 5 through step 1 containing of handling, fractional order reaction district 5 is made up of one-level flocculation reaction district, secondary flocculation reaction district and three grades of flocculation reaction districts, the volume ratio in one-level flocculation reaction district, secondary flocculation reaction district and three grades of flocculation reaction districts is 1: 1.5: 1, and the former water of handling through step 1 is 100r/minm at stirring intensity
2Condition under enter one-level flocculation reaction district reaction 10min, the flco particle diameter is 0.4～0.5mm in one-level flocculation reaction district, the flco fractal dimension is 1.70, the water outlet in one-level flocculation reaction district is 80r/minm at stirring intensity
2Condition under enter secondary flocculation reaction district reaction 15min, flco particle diameter＞0.5mm in the secondary flocculation reaction district, flco fractal dimension are 1.65, the water outlet in secondary flocculation reaction district is 60r/minm at stirring intensity
2Condition under enter three grades of flocculation reaction districts reaction 10min, flco particle diameter＞0.6mm in three grades of flocculation reaction districts, flco fractal dimension are 1.56; Three, handling the stable flco obtain through step 2 enters filler in the vertical settling region 7 through thrust-augmenting nozzle 6 and holds back district 8 and finish solid-liquid separation, system is discharged in water outlet overflow after the processing, and throw out slides to sludge bucket through bottom, the settling region gradient and discharges system by sludge pump 9 with the excess sludge form; Filler described in the step 3 hold back the district 8 in used filler be polymer plastic.
Present embodiment step 2 Central Plains water is realized by the blade diameter that different stirring rakes 4 are set through the stirring intensity in one-level flocculation reaction district, secondary flocculation reaction district and three grades of flocculation reaction districts.
Embodiment six: the materialization enhanced processing method of a kind of low-temperature sewage of present embodiment is as follows: one, cryogenic former water is entered the mixing zone by water inlet pipe, the medicament polymerize aluminum chloride that will flocculate simultaneously is added in the former water by the dispensing point, and the dosage of polymerize aluminum chloride is 120mg/L; Two, take off steady colloid and the former water of particulate enters the fractional order reaction district through step 1 containing of handling, the fractional order reaction district is made up of one-level flocculation reaction district, secondary flocculation reaction district and three grades of flocculation reaction districts, the volume ratio in one-level flocculation reaction district, secondary flocculation reaction district and three grades of flocculation reaction districts is 1: 1.5: 1, and the former water of handling through step 1 is 100r/minm at stirring intensity
2Condition under enter one-level flocculation reaction district reaction 10min, the flco particle diameter is 0.4～0.5mm in one-level flocculation reaction district, the flco fractal dimension is 1.70, the water outlet in one-level flocculation reaction district is 80r/minm at stirring intensity
2Condition under enter secondary flocculation reaction district reaction 15min, flco particle diameter＞0.5mm in the secondary flocculation reaction district, flco fractal dimension are 1.65, the water outlet in secondary flocculation reaction district is 60r/minm at stirring intensity
2Condition under enter three grades of flocculation reaction districts reaction 10min, flco particle diameter＞0.6mm in three grades of flocculation reaction districts, flco fractal dimension are 1.56; Three, handling the stable flco obtain through step 2 enters filler in the vertical settling region through thrust-augmenting nozzle and holds back the district and finish solid-liquid separation, system is discharged in water outlet overflow after the processing, and throw out slides to sludge bucket through bottom, the settling region gradient and discharges system by sludge pump with the excess sludge form.
Embodiment seven: the materialization enhanced processing method of a kind of low-temperature sewage of present embodiment is as follows: one, cryogenic former water is entered the mixing zone by water inlet pipe, the medicament polymerize aluminum chloride that will flocculate simultaneously is added in the former water by the dispensing point, and the dosage of polymerize aluminum chloride is 150mg/L; Two, take off steady colloid and the former water of particulate enters the fractional order reaction district through step 1 containing of handling, the fractional order reaction district is made up of one-level flocculation reaction district, secondary flocculation reaction district and three grades of flocculation reaction districts, the volume ratio in one-level flocculation reaction district, secondary flocculation reaction district and three grades of flocculation reaction districts is 1: 1.5: 1, and the former water of handling through step 1 is 100r/minm at stirring intensity
2Condition under enter one-level flocculation reaction district reaction 10min, the flco particle diameter is 0.4～0.5mm in one-level flocculation reaction district, the flco fractal dimension is 1.70, the water outlet in one-level flocculation reaction district is 80r/minm at stirring intensity
2Condition under enter secondary flocculation reaction district reaction 15min, flco particle diameter＞0.5mm in the secondary flocculation reaction district, flco fractal dimension are 1.65, the water outlet in secondary flocculation reaction district is 60r/minm at stirring intensity
2Condition under enter three grades of flocculation reaction districts reaction 10min, flco particle diameter＞0.6mm in three grades of flocculation reaction districts, flco fractal dimension are 1.56; Three, handling the stable flco obtain through step 2 enters filler in the vertical settling region through thrust-augmenting nozzle and holds back the district and finish solid-liquid separation, system is discharged in water outlet overflow after the processing, and throw out slides to sludge bucket through bottom, the settling region gradient and discharges system by sludge pump with the excess sludge form.
Embodiment eight: the materialization enhanced processing method of a kind of low-temperature sewage of present embodiment is as follows: one, cryogenic former water is entered the mixing zone by water inlet pipe, the medicament polymerize aluminum chloride that will flocculate simultaneously is added in the former water by the dispensing point, and the dosage of polymerize aluminum chloride is 130mg/L; Two, take off steady colloid and the former water of particulate enters the fractional order reaction district through step 1 containing of handling, the fractional order reaction district is made up of one-level flocculation reaction district, secondary flocculation reaction district and three grades of flocculation reaction districts, the volume ratio in one-level flocculation reaction district, secondary flocculation reaction district and three grades of flocculation reaction districts is 1: 1.5: 1, and the former water of handling through step 1 is 100r/minm at stirring intensity
2Condition under enter one-level flocculation reaction district reaction 10min, the flco particle diameter is 0.4～0.5mm in one-level flocculation reaction district, the flco fractal dimension is 1.70, the water outlet in one-level flocculation reaction district is 80r/minm at stirring intensity
2Condition under enter secondary flocculation reaction district reaction 15min, flco particle diameter＞0.5mm in the secondary flocculation reaction district, flco fractal dimension are 1.65, the water outlet in secondary flocculation reaction district is 60r/minm at stirring intensity
2Condition under enter three grades of flocculation reaction districts reaction 10min, flco particle diameter＞0.6mm in three grades of flocculation reaction districts, flco fractal dimension are 1.56; Three, handling the stable flco obtain through step 2 enters filler in the vertical settling region through thrust-augmenting nozzle and holds back the district and finish solid-liquid separation, system is discharged in water outlet overflow after the processing, and throw out slides to sludge bucket through bottom, the settling region gradient and discharges system by sludge pump with the excess sludge form.
Embodiment nine: the materialization enhanced processing method of a kind of low-temperature sewage of present embodiment is as follows: one, cryogenic former water is entered the mixing zone by water inlet pipe, the medicament polymerize aluminum chloride that will flocculate simultaneously is added in the former water by the dispensing point, and the dosage of polymerize aluminum chloride is 140mg/L; Two, take off steady colloid and the former water of particulate enters the fractional order reaction district through step 1 containing of handling, the fractional order reaction district is made up of one-level flocculation reaction district, secondary flocculation reaction district and three grades of flocculation reaction districts, the volume ratio in one-level flocculation reaction district, secondary flocculation reaction district and three grades of flocculation reaction districts is 1: 1.5: 1, and the former water of handling through step 1 is 100r/minm at stirring intensity
2Condition under enter one-level flocculation reaction district reaction 10min, the flco particle diameter is 0.4～0.5mm in one-level flocculation reaction district, the flco fractal dimension is 1.70, the water outlet in one-level flocculation reaction district is 80r/minm at stirring intensity
2Condition under enter secondary flocculation reaction district reaction 15min, flco particle diameter＞0.5mm in the secondary flocculation reaction district, flco fractal dimension are 1.65, the water outlet in secondary flocculation reaction district is 60r/minm at stirring intensity
2Condition under enter three grades of flocculation reaction districts reaction 10min, flco particle diameter＞0.6mm in three grades of flocculation reaction districts, flco fractal dimension are 1.56; Three, handling the stable flco obtain through step 2 enters filler in the vertical settling region through thrust-augmenting nozzle and holds back the district and finish solid-liquid separation, system is discharged in water outlet overflow after the processing, and throw out slides to sludge bucket through bottom, the settling region gradient and discharges system by sludge pump with the excess sludge form.
Claims (4)
1. the materialization enhanced processing method of a low-temperature sewage, the materialization enhanced processing method that it is characterized in that a kind of low-temperature sewage is as follows: one, cryogenic former water is entered the mixing zone by water inlet pipe, the medicament polymerize aluminum chloride that will flocculate simultaneously is added in the former water by the dispensing point, and the dosage of polymerize aluminum chloride is 120mg/L～150mg/L; Two, take off steady colloid and the former water of particulate is 100r/minm at stirring intensity through step 1 containing of handling
2Condition under flocculation for the first time, the reaction times is 10min, the flco particle diameter that flocculates for the first time is 0.4～0.5mm, the flco fractal dimension is 1.70, is 80r/minm at stirring intensity then
2Condition under flocculation for the second time, the reaction times is 15min, the flco particle diameter＞0.5mm that flocculates for the second time, the flco fractal dimension is 1.65, is 60r/minm at stirring intensity again
2Condition under for the third time the flocculation, the reaction times is 10min, the flco particle diameter＞0.6mm that flocculates for the third time, flco fractal dimension are 1.56; Three, handling the stable flco obtain through step 2 enters filler in the vertical settling region through thrust-augmenting nozzle and holds back the district and finish solid-liquid separation, system is discharged in water outlet overflow after the processing, and throw out slides to sludge bucket through bottom, the settling region gradient and discharges system by sludge pump with the excess sludge form.
2. according to the materialization enhanced processing method of the described a kind of low-temperature sewage of claim 1, the dosage that it is characterized in that polymerize aluminum chloride in the step 1 is 130mg/L～140mg/L.
3. according to the materialization enhanced processing method of the described a kind of low-temperature sewage of claim 1, the dosage that it is characterized in that polymerize aluminum chloride in the step 1 is 145mg/L.
4. according to the materialization enhanced processing method of the described a kind of low-temperature sewage of claim 1, it is characterized in that it is polymer plastic that filler described in the step 3 is held back filler used in the district.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102674514A (en) * | 2012-05-17 | 2012-09-19 | 苏州苏水环境工程有限公司 | Sludge recirculation reactor for treating industrial organic wastewater |
| CN103922450A (en) * | 2014-04-10 | 2014-07-16 | 北京工业大学 | Efficient hardness removal method and device applicable to underground water |
| CN104176901A (en) * | 2014-09-08 | 2014-12-03 | 哈尔滨工业大学 | Earlier-stage conditioning method of sewage sludge |
| CN104261532A (en) * | 2014-09-26 | 2015-01-07 | 甘肃金桥给水排水设计与工程(集团)有限公司 | Mechanical cyclone flocculation separation high-efficiency settling pond |
| CN109095479A (en) * | 2018-10-24 | 2018-12-28 | 中盐金坛盐化有限责任公司 | A kind of reactor tank for the production of vacuum salt production factory bittern purifying process continous way |
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| JP2009082826A (en) * | 2007-09-28 | 2009-04-23 | Hitachi Plant Technologies Ltd | Coagulating apparatus |
| CN201410339Y (en) * | 2009-06-03 | 2010-02-24 | 中国科学院兰州化学物理研究所 | Uninterrupted anti-disturbance floc sediment reverse separating system |
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| JP2009082826A (en) * | 2007-09-28 | 2009-04-23 | Hitachi Plant Technologies Ltd | Coagulating apparatus |
| CN201410339Y (en) * | 2009-06-03 | 2010-02-24 | 中国科学院兰州化学物理研究所 | Uninterrupted anti-disturbance floc sediment reverse separating system |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102674514A (en) * | 2012-05-17 | 2012-09-19 | 苏州苏水环境工程有限公司 | Sludge recirculation reactor for treating industrial organic wastewater |
| CN103922450A (en) * | 2014-04-10 | 2014-07-16 | 北京工业大学 | Efficient hardness removal method and device applicable to underground water |
| CN103922450B (en) * | 2014-04-10 | 2016-04-06 | 北京工业大学 | A kind of method and device being applicable to ground water hardness removal |
| CN104176901A (en) * | 2014-09-08 | 2014-12-03 | 哈尔滨工业大学 | Earlier-stage conditioning method of sewage sludge |
| CN104176901B (en) * | 2014-09-08 | 2016-01-20 | 哈尔滨工业大学 | A kind of Opsonizing method in early stage of sewage sludge |
| CN104261532A (en) * | 2014-09-26 | 2015-01-07 | 甘肃金桥给水排水设计与工程(集团)有限公司 | Mechanical cyclone flocculation separation high-efficiency settling pond |
| CN104261532B (en) * | 2014-09-26 | 2017-02-01 | 甘肃金桥水科技（集团）股份有限公司 | Mechanical cyclone flocculation separation high-efficiency settling pond |
| CN109095479A (en) * | 2018-10-24 | 2018-12-28 | 中盐金坛盐化有限责任公司 | A kind of reactor tank for the production of vacuum salt production factory bittern purifying process continous way |
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| CN102060361B (en) | 2012-08-22 |
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Application publication date: 20110518 Assignee: Harbin sunshine water industry Co.,Ltd. Assignor: Harbin Institute of Technology Contract record no.: 2013230000740 Denomination of invention: Physicochemical enhanced treatment method of low temperature wastewater Granted publication date: 20120822 License type: Exclusive License Record date: 20130513 |
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