CN103739108B - The method of additive is added in a kind of sewage treatment process - Google Patents
The method of additive is added in a kind of sewage treatment process Download PDFInfo
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- CN103739108B CN103739108B CN201310564779.5A CN201310564779A CN103739108B CN 103739108 B CN103739108 B CN 103739108B CN 201310564779 A CN201310564779 A CN 201310564779A CN 103739108 B CN103739108 B CN 103739108B
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Abstract
The present invention relates to a kind of method adding additive in sewage treatment process.The concrete steps of the method are: first arrange one for storing the additive hold-up vessel of additive and one for passing on the additive buffer memory chamber of additive, the additive outlets in additive buffer memory chamber by pipeline successively with buffer memory chamber after control valve, reaction vessel is connected, the additive inlet port in additive buffer memory chamber by pipeline successively with buffer memory chamber before control valve, additive hold-up vessel is connected, control valve before buffer memory chamber is first opened when adding additive, close control valve behind buffer memory chamber, additive is joined in additive buffer memory chamber, then control valve before buffer memory chamber is closed, open control valve behind buffer memory chamber, additive in additive buffer memory chamber can enter in reaction vessel and mix with staying water.The present invention have also been devised simultaneously and a kind ofly closes to being in and adding the adding method thereof of additive in the closed reaction vessel with certain pressure, can preferably resolve and add additivated problem in the closed reaction vessel with pressure.
Description
Technical field
The present invention relates to a kind of method adding additive in sewage treatment process.
Background technology
China is the country of a lack of water, and water resources ownership per capita is only world occupancy volume per person's 1/4.And the skewness of the water resources of China on space-time and areal distribution, more increase the weight of actual lack of water situation.Therefore China's city water resource is nervous further in the last few years, many cities serious water shortage.Meanwhile, water resource pollution is but day by day serious, and therefore many factories all set up the water treatment plants of oneself, changes current water scarcity and the present situation polluted.Environmental protection problem becomes one of factor of impact and restriction human social development day by day.Along with the development of industry and the sharply increase of urban population, a large amount of industry and the unprocessed inflow rivers,lakes and seas of sanitary sewage, make environment and tap water be heavily polluted.Therefore, setting up water treatment plants is the effective way solving water supply problem.
Working cost due to sewage disposal is huge, long-term, if the working cost of municipal sewage plant can be saved 1% by intelligentized control, that is also an astronomical figure.
Problems existing in current automatic control of sewage treatment:
(1) traditional wastewater process automatic control system requires to set up accurate mathematical model, and more mandatory hypothesis are proposed, but owing to there are complicacy, non-linear, time variation, uncertainty and imperfection etc. in actual sewage treatment system, generally cannot obtain accurate mathematical model and with the actual hypothesis conformed to, in practical engineering application, there is the effluent quality fluctuation problem such as larger in the Water Treatment Automatic Control System therefore adopting Traditional control theory to set up.
(2) some automatic detection systems adopted in Water Treatment Automatic Control System, the function of instrument are still far from perfect at present, fall flat in reality detects, error is very large, therefore rely on these test sets to judge sewage disposal situation and implement automatically to control, being difficult to the object reaching water quality treatment qualified discharge and save energy.
(3) domestic many Sewage treatment systemss many employings ORP(redox potential), DO(dissolved oxygen) and pH(potential of hydrogen) value controls effluent quality and aeration rate as controling parameters, but there are some problems in these methods, as control sewage work nitrated-denitrification process the ORP that uses just be difficult to judge, therefore most sewage work controlled based on ORP also execution time control, as the emergency flight control when controller cannot find ORP unique point, what so just cause many Sewage treatment systemss in fact still to adopt is whole treating processes of controlling by time variable.
(4) the automatic control of sewage disposal needs to control mechanical means such as a large amount of valve, pump, gas blower and suction (scraping) mud machine, agitators, need the switching value of control automatically many, they usually will be opened, stop according to certain hour or logical order timing, but there are some problems in the relevant device quality of some enterprises of China at present, work-ing life is shorter, and import equipment is very expensive.
Water treatment plants is in the process of carrying out water treatment, and a lot of program is all carry out when open, this environment that will sewage disposal caused to affect periphery, simultaneously because the diffusion of sewage volatilization and foul smell causes secondary pollution.Simultaneously, in water treatment procedure, often need to add additive in the staying waters such as pending tap water or various industrial discharge water, sanitary sewage, concrete additive and formula are determined by the water treatment company of specialty, divide by additive types, the conventional water conditioning additive of industrial circulating cooling water system has inhibiter, Scale inhibitors, dispersion agent, sterilant, coagulating agent, coagulant aids and regulates pH soda acid chemicals dosing plant etc.Engineer engaged in water supply and drainage engineering as plant design should be able to according to the kind of the additive of water treatment company proposition, form and the proper form adding concentration determination medicine machine.If add additive directly in open staying water, feed postition is relatively easy to, as long as additive is imported staying water by pipeline.But if will add additive to be in closed pipeline and to have in the staying water of certain pressure, common dosing method is irrealizable.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of method adding additive in sewage treatment process, and the method can be closed to being in and adding the medicine system of additive in the sewage reaction vessel with certain pressure preferably.
The present invention solves the problems of the technologies described above adopted technical scheme: a kind of method adding additive in sewage treatment process, comprise sewage, sewage by pipeline successively with grid, lift pump, settling tank, reaction tank, secondary sedimentation basins is connected, clear water is arranged outward or reuse by pipeline by the sewage in secondary sedimentation basins, settling tank, the mud that secondary sedimentation basins precipitation produces is delivered to sludge treatment equipment place and processes, reaction tank is closed reaction vessel, the concrete steps that the method adds additive in reaction vessel are: first arrange one for storing the additive hold-up vessel of additive and one for passing on the additive buffer memory chamber of additive, the additive outlets in additive buffer memory chamber by pipeline successively with buffer memory chamber after control valve, reaction vessel is connected, the additive inlet port in additive buffer memory chamber by pipeline successively with buffer memory chamber before control valve, additive hold-up vessel is connected, control valve before buffer memory chamber is first opened when adding additive, close control valve behind buffer memory chamber, additive is joined in additive buffer memory chamber, then control valve before buffer memory chamber is closed, open control valve behind buffer memory chamber, additive in additive buffer memory chamber can enter in reaction vessel and mix with staying water.This programme is by arranging an additive buffer memory chamber, the pipeline of front-end and back-end, additive buffer memory chamber is respectively equipped with control valve, control valve before first opening buffer memory chamber when adding additive, close control valve behind buffer memory chamber, by volume pump, additive is joined in additive buffer memory chamber, then close control valve before buffer memory chamber, open control valve behind buffer memory chamber, additive in additive buffer memory chamber can enter reaction vessel, mixes with the sewage in reaction vessel.The program preferably resolves adds additivated problem in the closed reaction vessel with pressure, if there is no additive buffer memory chamber, control valve is not set before and after additive buffer memory chamber, and directly in closed conduct, add additivated words by pump, need the power of pump very big, the pressure of the additive that at least will pump will exceed the hydraulic pressure in closed reaction vessel, additive just can enter to be had in the reaction vessel of pressure, like this, there is the problem that the working load of pump is large, and just in case the pressure pumping additive is inadequate, also may cause the adverse current of sewage in closed reaction vessel.
Particularly, the formula parts by weights meter of described additive is made up of following component: water glass 5-10 part, magnesium chloride 2-4 part, iron trichloride 1-2 part, polymerize aluminum chloride 0.5-1 part, cationic-type polyacrylamide 0.5-2.5 part, polyferric chloride 5-10 part, D-malic acid 6-9 part, polymine 1-2.5 part.
The formula parts by weights meter of described additive is made up of following component: water glass 6-7 part, magnesium chloride 2-3 part, iron trichloride 1.5-2 part, polymerize aluminum chloride 0.6-0.8 part, cationic-type polyacrylamide 1.5-2.5 part, polyferric chloride 7-9 part, D-malic acid 8-9 part, polymine 1-1.5 part.
The formula parts by weights meter of described additive is made up of following component: water glass 6.5 parts, 2.5 parts, magnesium chloride, iron trichloride 1.6 parts, polymerize aluminum chloride 0.8 part, cationic-type polyacrylamide 1.8 parts, polyferric chloride 8.5 parts, D-malic acid 8.5 parts, polymine 1.5 parts.
Also comprise volume pump, unidirectional water flowing out structure, medicament storage tank by pipeline successively with volume pump, unidirectional water flowing out structure, buffer memory chamber before control valve connect.This structure is to prevent additive adverse current, accurately measures to additive.
Also comprise pressure switch, pressure switch is arranged on the pipeline between volume pump and unidirectional water flowing out structure.According to the pressure-bearing safety requirements of pipeline and equipment, when detecting that in pipeline, hydraulic pressure exceedes set(ting)value, volume pump can be closed with the hydrodynamicpressure in control tube.Further, the pipeline that pressure switch is set can also arrange pressure relief.
Measuring unit of liquid level is provided with in described medicament buffer memory chamber.By measuring unit of liquid level measure additive buffer memory cavity fluid number so that control the open and close state of each valve preferably.
Described medicament buffer memory chamber is provided with the emptying pipeline connected with cavity top, and emptying pipeline is provided with the emptying control valve in buffer memory chamber.When additive is joined additive buffer memory chamber by volume pump, the emptying control valve in buffer memory chamber can be opened and carry out air defense, prevent additive buffer memory cavity pressure from increasing.
Described medicament buffer memory chamber is provided with the drain line connected with cavity bottom, and drain line is provided with buffer memory chamber discharge opeing control valve.Control valve behind unlatching buffer memory chamber, after mixing with staying water in the pipeline that additive in additive buffer memory chamber enters staying water, staying water also can enter additive buffer memory chamber simultaneously, on carrying out once dosing time, need first to close control valve behind control valve before buffer memory chamber, buffer memory chamber, open buffer memory chamber discharge opeing control valve, the staying water retained last in additive buffer memory chamber is discharged, then carries out feeding operations next time by operation.
The invention has the beneficial effects as follows:
1, structure of the present invention is simple, and the sewage disposal of whole system is all carried out under the environment closed, and in treating processes, the foul smell of sewage can not volatilize or spread, and improves the impact on surrounding enviroment in sewage treatment process.
2, the present invention have also been devised simultaneously and a kind ofly closes to being in and adding the adding method thereof of additive in the closed reaction vessel with certain pressure, can preferably resolve and add additivated problem in the closed reaction vessel with pressure.
3, sewage disposal additive of the present invention can eliminate the organic macromolecule in sewage preferably, kills the pathogenic agent in sewage, and larger molecular organics elimination factor reaches as high as 96%, and the killing rate of pathogenic agent reaches as high as 98%.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of chemicals dosing plant of the present invention.
Component title corresponding to number in the figure is: 1-additive hold-up vessel, 2-volume pump, 3-pressure switch, the unidirectional water flowing out structure of 4-, control valve before 5-buffer memory chamber, 6-measuring unit of liquid level, the emptying control valve in 7-buffer memory chamber, control valve behind 9-buffer memory chamber, 10-additive buffer memory chamber, 11-buffer memory chamber discharge opeing control valve.
Embodiment
As Fig. 1, shown in Fig. 2, the working process of the Sewage treatment systems of the present embodiment is: the sewage first produced first concentrates in sewage lagoon, the sewage outlet place of sewage lagoon arranges grid, prefiltration is carried out to the sewage flowed out, large suspended substance is retained so that subsequent disposal, if do not design sewage lagoon, but waste pipe institute sewer directly enters present treatment system, the grid filtered can be directly designed in plumbing drain, through grid except sewage transport to settling tank is carried out first time precipitation by lift pump by the sewage after filtration, oettIed sewage enters reaction tank for the first time, reaction treatment is carried out to sewage, to eliminate the organism in sewage, kill pathogenic agent etc., in reaction process, need to add the additive or additive that are equipped with by specialized company, to improve the efficiency of sewage disposal, enter secondary sedimentation basins through reacted sewage and carry out second time precipitation, water after precipitation can reach emission standard, by pipeline, clear water is arranged outward or reuse, settling tank, the mud of secondary sedimentation basins is delivered to sludge treatment equipment place and processes.
In the present embodiment, settling tank, secondary sedimentation basins are closed container.Reaction tank is also closed reaction vessel, it can be specifically reactor, the equipment such as tank, this Sewage treatment systems compares the sewage source being applicable to adopt the process of anaerobism mode, in this system, also have and add additivated chemicals dosing plant in reaction vessel, this device comprises additive hold-up vessel 1, volume pump 2, control valve 5 before buffer memory chamber, control valve 9 behind buffer memory chamber, additive buffer memory chamber 10, unidirectional water flowing out structure 4, additive hold-up vessel 1 by pipeline successively with volume pump 2, unidirectional water flowing out structure 4, control valve 5 before buffer memory chamber, additive buffer memory chamber 10, behind buffer memory chamber, control valve 9 is connected, behind buffer memory chamber, control valve 9 is connected by pipeline and reaction vessel.
Further, the pipeline between volume pump 2 and unidirectional water flowing out structure 4 is provided with pressure switch 3.Measuring unit of liquid level 6 is provided with in additive buffer memory chamber 10, additive buffer memory chamber 10 is provided with the emptying pipeline connected with cavity top, emptying pipeline is provided with the emptying control valve 7 in buffer memory chamber, simultaneously, additive buffer memory chamber 10 is provided with the drain line connected with cavity bottom, and drain line is provided with buffer memory chamber discharge opeing control valve 11.By controlling buffer memory chamber emptying control valve 7, the independent unlatching of buffer memory chamber discharge opeing control valve 11 or closedown, the function of the emptying and discharge opeing in additive buffer memory chamber 10 can be solved.Open the emptying control valve 7 in buffer memory chamber, buffer memory chamber discharge opeing control valve 11 simultaneously, the interface of buffer memory chamber discharge opeing control valve 11 end and flushing water route are connected, the back-flushing structure that additive buffer memory chamber 10 is cleaned can also be formed.
When carrying out sewage disposal according to the above-mentioned treatment process of the present embodiment, if when adopting the formula parts by weights of additive to count following component formation: water glass 5 parts, 2 parts, magnesium chloride, iron trichloride 1 part, polymerize aluminum chloride 0.5 part, cationic-type polyacrylamide 0.5 part, polyferric chloride 5 parts, D-malic acid 6 parts, polymine 1 part.Experiment shows, adopts the additive of this formula, and when carrying out sewage disposal according to above-mentioned technique (mass ratio of additive and sewage is 1:1000), larger molecular organics elimination factor is 90%, and the killing rate of pathogenic agent is 95%.
When carrying out sewage disposal according to the above-mentioned treatment process of the present embodiment, if when adopting the formula parts by weights of additive to count following component formation: water glass 7 parts, 3 parts, magnesium chloride, iron trichloride 2 parts, polymerize aluminum chloride 0.8 part, cationic-type polyacrylamide 2.5 parts, polyferric chloride 9 parts, D-malic acid 9 parts, polymine 1.5 parts.Experiment shows, adopts the additive of this formula, and when carrying out sewage disposal according to above-mentioned technique (mass ratio of additive and sewage is 1:1000), larger molecular organics elimination factor is 92%, and the killing rate of pathogenic agent is 96%.
When carrying out sewage disposal according to the above-mentioned treatment process of the present embodiment, if when adopting the formula parts by weights of additive to count following component formation: water glass 6.5 parts, 2.5 parts, magnesium chloride, iron trichloride 1.6 parts, polymerize aluminum chloride 0.8 part, cationic-type polyacrylamide 1.8 parts, polyferric chloride 8.5 parts, D-malic acid 8.5 parts, polymine 1.5 parts.Experiment shows, adopts the additive of this formula, and when carrying out sewage disposal according to above-mentioned technique (mass ratio of additive and sewage is 1:1000), larger molecular organics elimination factor is 96%, and the killing rate of pathogenic agent is 98%.
As mentioned above, the present invention can be implemented preferably.
Claims (8)
1. one kind adds the method for additive in sewage reaction vessel, it is characterized in that, comprise sewage, sewage by pipeline successively with grid, lift pump, settling tank, reaction tank, secondary sedimentation basins is connected, clear water is arranged outward or reuse by pipeline by the sewage in secondary sedimentation basins, settling tank, the mud that secondary sedimentation basins precipitation produces is delivered to sludge treatment equipment place and processes, reaction tank is closed reaction vessel, the concrete steps that the method adds additive in reaction vessel are: first arrange one for storing the additive hold-up vessel (1) of additive and one for passing on the additive buffer memory chamber (10) of additive, the additive outlets in additive buffer memory chamber (10) by pipeline successively with buffer memory chamber after control valve (9), reaction vessel is connected, the additive inlet port in additive buffer memory chamber (10) by pipeline successively with buffer memory chamber before control valve (5), additive hold-up vessel (1) is connected, control valve before buffer memory chamber is first opened when adding additive, close control valve behind buffer memory chamber, additive is joined in additive buffer memory chamber, then control valve before buffer memory chamber is closed, open control valve behind buffer memory chamber, additive in additive buffer memory chamber can enter in reaction vessel and mix with staying water, the formula meter of described additive is made up of following component: water glass 5-10 part, magnesium chloride 2-4 part, iron trichloride 1-2 part, polymerize aluminum chloride 0.5-1 part, cationic-type polyacrylamide 0.5-2.5 part, polyferric chloride 5-10 part, D-malic acid 6-9 part, polymine 1-2.5 part.
2. a kind of method adding additive in sewage reaction vessel according to claim 1, it is characterized in that, the formula meter of described additive is made up of following component: water glass 6-7 part, magnesium chloride 2-3 part, iron trichloride 1.5-2 part, polymerize aluminum chloride 0.6-0.8 part, cationic-type polyacrylamide 1.5-2.5 part, polyferric chloride 7-9 part, D-malic acid 8-9 part, polymine 1-1.5 part.
3. a kind of method adding additive in sewage reaction vessel according to claim 2, it is characterized in that, the formula meter of described additive is made up of following component: water glass 6.5 parts, 2.5 parts, magnesium chloride, iron trichloride 1.6 parts, polymerize aluminum chloride 0.8 part, cationic-type polyacrylamide 1.8 parts, polyferric chloride 8.5 parts, D-malic acid 8.5 parts, polymine 1.5 parts.
4. a kind of method adding additive in sewage reaction vessel according to any one of claims 1 to 3, it is characterized in that, also comprise volume pump (2), unidirectional water flowing out structure (4), additive hold-up vessel (1) by pipeline successively with volume pump (2), unidirectional water flowing out structure (4), buffer memory chamber before control valve (5) connect.
5. a kind of method adding additive in sewage reaction vessel according to claim 4, is characterized in that, also comprise pressure switch (3), pressure switch (3) is arranged on the pipeline between volume pump (2) and unidirectional water flowing out structure (4).
6. a kind of method adding additive in sewage reaction vessel according to any one of claims 1 to 3, is characterized in that, is provided with measuring unit of liquid level (6) in described additive buffer memory chamber (10).
7. a kind of method adding additive in sewage reaction vessel according to any one of claims 1 to 3, it is characterized in that, described additive buffer memory chamber (10) is provided with the emptying pipeline connected with cavity top, and emptying pipeline is provided with the emptying control valve in buffer memory chamber (7).
8. a kind of method adding additive in sewage reaction vessel according to any one of claims 1 to 3, it is characterized in that, described additive buffer memory chamber (10) is provided with the drain line connected with cavity bottom, and drain line is provided with buffer memory chamber discharge opeing control valve (11).
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| CN201310564779.5A CN103739108B (en) | 2013-06-24 | 2013-11-14 | The method of additive is added in a kind of sewage treatment process |
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| CN201310252530 | 2013-06-24 | ||
| CN2013102525300 | 2013-06-24 | ||
| CN201310252530.0 | 2013-06-24 | ||
| CN201310564779.5A CN103739108B (en) | 2013-06-24 | 2013-11-14 | The method of additive is added in a kind of sewage treatment process |
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| CN103739108B true CN103739108B (en) | 2016-03-02 |
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| EP0994235A2 (en) * | 1998-10-14 | 2000-04-19 | Tracto-Technik Paul Schmidt Spezialmaschinen | Apparatus for continuous mixing drilling fluid |
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| CN101723543A (en) * | 2008-10-10 | 2010-06-09 | 朱艳玲 | Method for treating domestic wastewater |
| CN202516529U (en) * | 2012-04-24 | 2012-11-07 | 中国铝业股份有限公司 | Reaction device under high pressure capable of flowing into oxygen |
| CN102773036A (en) * | 2012-07-27 | 2012-11-14 | 湖南精正设备制造有限公司 | Premixing equipment for polyurethane polyol multi-component formula |
| CN103011463A (en) * | 2012-12-07 | 2013-04-03 | 常州大学 | Method for removing zirconium in sewage |
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2013
- 2013-11-14 CN CN201310564779.5A patent/CN103739108B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0994235A2 (en) * | 1998-10-14 | 2000-04-19 | Tracto-Technik Paul Schmidt Spezialmaschinen | Apparatus for continuous mixing drilling fluid |
| US20050067013A1 (en) * | 2003-09-30 | 2005-03-31 | Robert R. Adams | System for feeding solid materials to a pressurized pipeline |
| CN101723543A (en) * | 2008-10-10 | 2010-06-09 | 朱艳玲 | Method for treating domestic wastewater |
| CN202516529U (en) * | 2012-04-24 | 2012-11-07 | 中国铝业股份有限公司 | Reaction device under high pressure capable of flowing into oxygen |
| CN102773036A (en) * | 2012-07-27 | 2012-11-14 | 湖南精正设备制造有限公司 | Premixing equipment for polyurethane polyol multi-component formula |
| CN103011463A (en) * | 2012-12-07 | 2013-04-03 | 常州大学 | Method for removing zirconium in sewage |
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Inventor after: Liu Erbao Inventor after: Liu Linsuo Inventor after: Xue Bingchun Inventor before: Tan Qiuping Inventor before: Jiang Mingan |
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Effective date of registration: 20170329 Address after: Three village Liu Yuan town in Shanxi province Linfen city Hongdong County 041699 Patentee after: SHANXI DINGLONG YUXIN AGRICULTURAL TECHNOLOGY Co.,Ltd. Address before: 610041 high tech Zone, Sichuan Province, the southern part of the two ring road, No. four, building two, building 4, building 2 Patentee before: SICHUAN HAIPU FLUID TECHNOLOGY Co.,Ltd. |
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