CN105541071A - Sequencing-batch pyrohydrolysis sludge treatment device and control method thereof - Google Patents
Sequencing-batch pyrohydrolysis sludge treatment device and control method thereof Download PDFInfo
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- CN105541071A CN105541071A CN201511016098.0A CN201511016098A CN105541071A CN 105541071 A CN105541071 A CN 105541071A CN 201511016098 A CN201511016098 A CN 201511016098A CN 105541071 A CN105541071 A CN 105541071A
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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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/10—Treatment of sludge; Devices therefor by pyrolysis
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/001—Runoff or storm water
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- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention provides a sequencing-batch pyrohydrolysis sludge treatment device and a control method thereof. The sludge treatment device comprises a reaction kettle, a vacuum pump and a plate and frame filter press which are sequentially connected through a delivery pipeline, wherein the reaction kettle is provided with a feed port and a discharge port; a first cut-off valve is arranged between the reaction kettle and vacuum pump; and a second cut-off valve is arranged between the vacuum pump and plate and frame filter press. The sludge treatment device also comprises a control system for controlling the operation of the sludge treatment device, a heating assembly for heating the reaction kettle, a gas pressure assembly for monitoring and regulating gas pressure in the reaction kettle, and a pH assembly for detecting and regulating the pH value of the sludge in the reaction kettle. The sludge treatment device and control method thereof are adopted to implement continuous clean production and integrated control, effectively reduce the stink spillover and avoid secondary pollution. The device can be used for conveniently detecting and controlling the pH value of the sludge, thereby achieving better treatment effect.
Description
Technical field
The invention belongs to technical field of sludge treatment, particularly, relate to a kind of sequence batch (thermal hydrolysis sludge treatment equipment and control method thereof.
Background technology
Along with quickening and the industrialized development of Urbanization in China, in city, the output of mud also increases day by day, and comprises all kinds of objectionable impurities in mud more, produces serious environmental risk and hidden danger to the life of people.Therefore, the process of mud also becomes an important topic in environmental engineering.Object for sludge treatment: reduce water ratio and kill all kinds of harmful microorganism to realize harmless treatment, in the industry multiple sludge treatment technique is proposed now, autoclave is adopted to be reactor as Chinese patent CN1569699A discloses one, and the technical scheme of water content 45 ~ 50% mud cake is obtained by thermal hydrolysis, anaerobic digestion and dehydration, the second stage employ of the energy in the mud that applicable organic content is higher, but reaction time is longer, sludge treatment efficiency is low, and cannot realize pH detection and regulate.
Given this, be necessary to provide a kind of new sludge treatment equipment and control method thereof.
Summary of the invention
The object of the invention is to provide a kind of sludge treatment equipment and control method thereof, continuous cleaner production and overall-in-one control schema can be realized, effective minimizing foul smell is excessive, avoids secondary pollution, and can be convenient to detect and control the pH value of mud to reach treatment effect better.
For achieving the above object, the invention provides a kind of sequence batch (thermal hydrolysis sludge treatment equipment, comprise the reactor, vacuum pump and the plate-and-frame filter press that are connected successively by transfer line, described reactor offers opening for feed and discharge port, be provided with the first stopping valve between described reactor and vacuum pump, between described vacuum pump and plate-and-frame filter press, be provided with the second stopping valve; Described sludge treatment equipment also comprises heating component in order to heat reactor, monitoring regulate the air pressure assembly of gaseous tension in reactor and detection and regulate the pH assembly of the pH value of mud in reactor.
As a further improvement on the present invention, described pH assembly comprises holding the first container of acid solution and the second container in order to hold alkaline solution, described first container and second container are communicated to described reactor respectively, and are also provided with the first ram pump between described first container and reactor; Also be provided with the second ram pump between second container and reactor, described pH assembly also comprises the pH time meter being connected in described discharge outlet, is provided with precooling pipeline between described pH time meter and discharge port.
As a further improvement on the present invention, described air pressure assembly comprises source nitrogen, and described source nitrogen is connected to the upper end of reactor by admission passage, and described admission passage is provided with intake valve; Described air pressure assembly also comprises the pressure relief pipe being arranged at reactor upper end, and described pressure relief pipe is provided with pressure release valve.
As a further improvement on the present invention, described air pressure assembly also comprises the safety valve being arranged at reactor upper end.
As a further improvement on the present invention, described sludge treatment equipment also comprises the mixing component stirring mud in described reactor, described mixing component comprises the paddle that is arranged in reactor and is connected to described paddle and drives the motor that described paddle rotates, and described motor is connected with cooling water channel.
As a further improvement on the present invention, the transfer line between described reactor and vacuum pump leads to blow-off line, described blow-off line is provided with wash water valve.
As a further improvement on the present invention, the outside surface of described reactor is coated is at least partly provided with thermal insulation layer.
The present invention also provides a kind of control method of described sludge treatment equipment, and described sludge treatment equipment also comprises the Controlling System controlling the operation of described sludge treatment equipment, and described control method comprises:
After charging completes, close opening for feed;
Discharge port is opened in control, is recorded the initial pH value of mud by pH assembly, and initial pH value and default pH value range is contrasted;
If initial pH value is within default pH value range, close discharge port;
If initial pH value is not in default pH value range, regulates the pH value of mud in reactor to presetting within pH value range by pH assembly, closing discharge port;
Control heating component and default temperature of reaction T1 is heated to reactor;
Control air pressure assembly and the pressure P in reactor is adjusted to default reaction pressure P1;
And under default temperature of reaction T1 and default reaction pressure P1, add up reaction duration t to t1;
Control air pressure assembly and pressure P in reactor is adjusted to default discharge pressure P2;
Open discharge port;
Control to open plate-and-frame filter press, open the first stopping valve and the second stopping valve, and reacted mud is delivered to plate-and-frame filter press by transfer line by control unlatching vacuum pump.
As a further improvement on the present invention, described pH assembly comprises the pH time meter being connected in described discharge outlet, precooling pipeline is provided with between described pH time meter and discharge port, described control method also comprises: control air pressure assembly and pressure P in reactor is adjusted to default discharge pressure P2, and after opening discharge port, by pH component detection and the pH value controlling reacted mud be within default pH value range.
As a further improvement on the present invention, described control method also comprises: in reactor heating or reaction process, open discharge port, is controlled the pH value of mud in reactor be within default pH value range by pH component detection.
Beneficial effect of the present invention: adopt sludge treatment equipment of the present invention and control method thereof, the reactor connected successively by transfer line, vacuum pump and plate-and-frame filter press are to form totally enclosed structure, realize continuous cleaner production and overall-in-one control schema, effective minimizing foul smell is excessive, avoid secondary pollution, and be convenient to the pH value of detection and control mud to reach treatment effect better by pH assembly.
Accompanying drawing explanation
Fig. 1 is the structural representation of sludge treatment equipment of the present invention;
Fig. 2 is the control method schema of sludge treatment equipment of the present invention.
Embodiment
Describe the present invention below with reference to embodiment shown in the drawings.But this embodiment does not limit the present invention, the structure that those of ordinary skill in the art makes according to this embodiment, method or conversion functionally are all included in protection scope of the present invention.
Be illustrated in figure 1 the structural representation of sludge treatment equipment 100 of the present invention.Described sludge treatment equipment 100 comprises the reactor 2, vacuum pump 3 and the plate-and-frame filter press 4 that are connected successively by transfer line 1.Described reactor 2 offers opening for feed 21 and discharge port 22, and described opening for feed 21 is arranged at the top of reactor 2; Described discharge port 22 is arranged at the bottom centre position of reactor 2.The outside surface of described reactor 2 is coated is at least partly provided with thermal insulation layer 23, and particularly, lower part of described thermal insulation layer 23 coating reaction still 2, reduces the calorific loss in reaction process, and the injury that can prevent unexpected touching and field staff is caused.Described transfer line 1 is provided with the first stopping valve 11 between described reactor 2 and vacuum pump 3, and is provided with the second stopping valve 12 between described vacuum pump 3 and plate-and-frame filter press 4.
Described sludge treatment equipment 100 also comprises heating component (not shown) in order to heat reactor 2, in order to stir the mixing component of mud in described reactor 2, monitoring regulate the air pressure assembly of gaseous tension in reactor 2 and detection and regulate the pH assembly of the pH value of mud in reactor 2.
Described mixing component comprises the paddle 51 that is arranged in reactor 2 and is connected to described paddle 51 and drives the motor 52 that described paddle 51 rotates.Described motor 52 is arranged at the top of reactor 2, and the plan vertical of the output terminal autoreaction still 2 of described motor 52 extends into reactor 2 inside.Described paddle 51 is set to the turbine type paddle of horizontal distribution, and the stirring velocity of described paddle 51 is 0 ~ 60r/min.Described motor 52 is also connected with cooling water channel 521, by this, when motor 52 operates, by cooling water temperature, avoids motor 52 high temperature impaired.
Described pH assembly comprises holding the first container 61 of acid solution and the second container 62 in order to hold alkaline solution, described first container 61 and second container 62 are communicated to the top of described reactor 2 respectively, and are also provided with the first ram pump 63 between described first container 61 and reactor 2; Also be provided with the second ram pump 64 between second container 62 and reactor 2, described pH assembly also comprises the pH time meter 65 being connected in described discharge outlet, is provided with precooling pipeline 66 between described pH time meter 65 and discharge port 22.When heating at reactor 2 or need the sludge pH in detection reaction still 2 in reaction process, first stopping valve 11 is closed, open discharge port 22, mud enters precooling pipeline 66, and by described pH time meter 65, it is detected after the cooling period, can measure the whole process pH of mud in realization response still 2, solve the problem that existing pH time meter is difficult to tolerance response process high temperature.
Described air pressure assembly comprises source nitrogen 71, and described source nitrogen 71 is connected to the upper end of reactor 2 by admission passage 72, and described admission passage 72 is provided with intake valve 73; Described air pressure assembly also comprises the pressure relief pipe 74 being arranged at reactor 2 upper end, and described pressure relief pipe 74 is provided with pressure release valve 75.After reactor 2 charging completes, open intake valve 73, by admission passage 72, N2 is supplemented in reactor 2 until pressure P wherein reaches process requirements; Reactor 2 heats and in reaction process, when wherein pressure P exceeds, controls to open pressure release valve 75, reduce the pressure in reactor 2 in time.Described air pressure assembly also comprises the safety valve 76 being arranged at reactor 2 upper end, and when in reactor 2 during hypertonia, safety valve 76 opens pressure release automatically, avoids mishap.
Wherein, in reactor 2, be also provided with pressure transmitter (not shown), by the pressure in pressure transmitter Real-Time Monitoring reactor 2, thus realize automatic pressure adjustment.In the present embodiment, the highest proof pressure of described reactor 2 is 4MPa, and described pressure transmitter is by the real-time pressure feedback in reactor 2 to touching manipulation screen (not shown), and described pressure P adopts three figure places aobvious and its adjusting range is 0.01MPa.Further, described heating component is far-infrared heating module, heating power 25Kw, and compared with conventional thermal conduction type of heating, thermo-efficiency is higher.The maximum operating temperature of described reactor 2 is 300 DEG C, and the heat-up time of described reactor 2 is less than 2h, and the reaction times is about 30min, and is automatically controlled the start and stop of heating component by design temperature in reaction process, and heating delay-time is no more than 1min.
Transfer line 1 between described reactor 2 and vacuum pump 3 leads to blow-off line 13, and described blow-off line 13 is provided with wash water valve 131.In reactor 2, mud conveying is complete and temperature that is reactor 2 is cooled to less than 100 DEG C, can clean the inside of reactor 2, water for cleaning be added reactor 2 from described opening for feed 21 and cleans, and after cleaning completes, open discharge port 22 and wash water valve 131, water for cleaning is discharged.
The below of described plate-and-frame filter press 4 is provided with a water receiving tank 41, and the diapire of described water receiving tank 41 is provided with water port 411.Also be provided with a tensimeter 42 between described plate-and-frame filter press 4 and vacuum pump 3, described tensimeter 42 is in order to show the pressure of plate-and-frame filter press 4 entrance end in real time.
Described vacuum pump 3 is set to surge pump, and described vacuum pump 3 is also connected with detergent line 31, and the end of described detergent line 31 extends to the top of water receiving tank 41.After the mud in reactor 2 is delivered to plate-and-frame filter press 4, control to close described first stopping valve 11 and the second stopping valve 12, then rinsed by detergent line 31 pairs of vacuum pumps 3, wherein, unlatching No. 1 ~ 2 vacuum pump 3 is needed, to make vacuum pump 3 internal washing clean in cleaning process.
Described sludge treatment equipment 100 also comprises the Controlling System controlling the operation of described sludge treatment equipment 100, and the present invention also provides a kind of control method of described sludge treatment equipment 100.
As shown in Figure 2, described control method comprises:
After charging completes, close opening for feed 21;
Discharge port 22 is opened in control, is recorded the initial pH value of mud by pH assembly, and initial pH value and default pH value range is contrasted;
If initial pH value is within default pH value range, close discharge port 22;
If initial pH value is not in default pH value range, regulates the pH value of mud in reactor 2 to presetting within pH value range by pH assembly, closing discharge port 22;
Control heating component and default temperature of reaction T1 is heated to reactor 2;
Control air pressure assembly and the pressure P in reactor 2 is adjusted to default reaction pressure P1;
And under default temperature of reaction T1 and default reaction pressure P1, add up reaction duration t to t1;
Control air pressure assembly and pressure P in reactor 2 is adjusted to default discharge pressure P2;
Discharge port 22 is opened in control;
By pH component detection and the pH value controlling reacted mud is within default pH value range;
Control to open plate-and-frame filter press 4, open the first stopping valve 11 and the second stopping valve 12;
Control to open vacuum pump 3, and open pressure release valve 75, reacted mud is delivered to plate-and-frame filter press 4 by transfer line 1 by pumping.
Wherein, when reactor 2 is in heating or reaction process, described control method also comprises: open discharge port 22, partial sludge is made to enter precooling pipeline 66, and its pH value is measured after mud cooling, by this, to control in reactor 2 mud be also within default pH value range in heating and reaction process by pH component detection.
In sum, adopt sludge treatment equipment 100 of the present invention and control method thereof, the reactor 2 connected successively by transfer line 1, vacuum pump 3 and plate-and-frame filter press 4 are to form totally enclosed structure, realize continuous cleaner production and overall-in-one control schema, effective minimizing foul smell is excessive, avoid secondary pollution, and be convenient to the pH value of detection and control mud to reach treatment effect better by pH assembly.
Be to be understood that, although this specification sheets is described according to embodiment, but not each embodiment only comprises an independently technical scheme, this narrating mode of specification sheets is only for clarity sake, those skilled in the art should by specification sheets integrally, technical scheme in each embodiment also through appropriately combined, can form other embodiments that it will be appreciated by those skilled in the art that.
A series of detailed description listed is above only illustrating for feasibility embodiment of the present invention; they are also not used to limit the scope of the invention, all do not depart from the skill of the present invention equivalent implementations done of spirit or change all should be included within protection scope of the present invention.
Claims (10)
1. a sequence batch (thermal hydrolysis sludge treatment equipment, it is characterized in that: described sludge treatment equipment comprises the reactor, vacuum pump and the plate-and-frame filter press that are connected successively by transfer line, described reactor offers opening for feed and discharge port, be provided with the first stopping valve between described reactor and vacuum pump, between described vacuum pump and plate-and-frame filter press, be provided with the second stopping valve; Described sludge treatment equipment also comprises heating component in order to heat reactor, monitoring regulate the air pressure assembly of gaseous tension in reactor and detection and regulate the pH assembly of the pH value of mud in reactor.
2. sludge treatment equipment according to claim 1, it is characterized in that: described pH assembly comprises holding the first container of acid solution and the second container in order to hold alkaline solution, described first container and second container are communicated to described reactor respectively, and are also provided with the first ram pump between described first container and reactor; Also be provided with the second ram pump between second container and reactor, described pH assembly also comprises the pH time meter being connected in described discharge outlet, is provided with precooling pipeline between described pH time meter and discharge port.
3. sludge treatment equipment according to claim 1, is characterized in that: described air pressure assembly comprises source nitrogen, and described source nitrogen is connected to the upper end of reactor by admission passage, and described admission passage is provided with intake valve; Described air pressure assembly also comprises the pressure relief pipe being arranged at reactor upper end, and described pressure relief pipe is provided with pressure release valve.
4. sludge treatment equipment according to claim 3, is characterized in that: described air pressure assembly also comprises the safety valve being arranged at reactor upper end.
5. sludge treatment equipment according to claim 1, it is characterized in that: described sludge treatment equipment also comprises stirring the mixing component of mud in described reactor, described mixing component comprises the paddle that is arranged in reactor and is connected to described paddle and drives the motor that described paddle rotates, and described motor is connected with cooling water channel.
6. sludge treatment equipment according to claim 1, is characterized in that: the transfer line between described reactor and vacuum pump leads to blow-off line, and described blow-off line is provided with wash water valve.
7. sludge treatment equipment according to claim 1, is characterized in that: the outside surface of described reactor is coated is at least partly provided with thermal insulation layer.
8. a control method for the sludge treatment equipment as described in any one of claim 1-7, described sludge treatment equipment also comprises the Controlling System controlling the operation of described sludge treatment equipment, and it is characterized in that, described control method comprises:
After charging completes, close opening for feed;
Discharge port is opened in control, is recorded the initial pH value of mud by pH assembly, and initial pH value and default pH value range is contrasted;
If initial pH value is within default pH value range, close discharge port;
If initial pH value is not in default pH value range, regulates the pH value of mud in reactor to presetting within pH value range by pH assembly, closing discharge port;
Control heating component and default temperature of reaction T1 is heated to reactor;
Control air pressure assembly and the pressure P in reactor is adjusted to default reaction pressure P1;
And under default temperature of reaction T1 and default reaction pressure P1, add up reaction duration t to t1;
Control air pressure assembly and pressure P in reactor is adjusted to default discharge pressure P2;
Open discharge port;
Control to open plate-and-frame filter press, open the first stopping valve and the second stopping valve, and reacted mud is delivered to plate-and-frame filter press by transfer line by control unlatching vacuum pump.
9. the control method of sludge treatment equipment according to claim 8, it is characterized in that, described pH assembly comprises the pH time meter being connected in described discharge outlet, precooling pipeline is provided with between described pH time meter and discharge port, described control method also comprises: control air pressure assembly and pressure P in reactor is adjusted to default discharge pressure P2, and after opening discharge port, by pH component detection and the pH value controlling reacted mud be within default pH value range.
10. the control method of sludge treatment equipment according to claim 9, it is characterized in that, described control method also comprises: in reactor heating or reaction process, open discharge port, is controlled the pH value of mud in reactor be within default pH value range by pH component detection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511016098.0A CN105541071A (en) | 2015-12-29 | 2015-12-29 | Sequencing-batch pyrohydrolysis sludge treatment device and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201511016098.0A CN105541071A (en) | 2015-12-29 | 2015-12-29 | Sequencing-batch pyrohydrolysis sludge treatment device and control method thereof |
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| CN105541071A true CN105541071A (en) | 2016-05-04 |
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| CN201511016098.0A Pending CN105541071A (en) | 2015-12-29 | 2015-12-29 | Sequencing-batch pyrohydrolysis sludge treatment device and control method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107382008A (en) * | 2017-08-31 | 2017-11-24 | 河北国惠环保科技有限公司 | A kind of open waters Treatment of Sludge pyrolysis reactor and method for sludge treatment |
| CN108675580A (en) * | 2018-07-03 | 2018-10-19 | 成都诺德源环保科技有限公司 | A kind of sludge treatment equipment and trash-removal device |
| CN110180482A (en) * | 2019-06-21 | 2019-08-30 | 刘晓慧 | A kind of reaction kettle that the mixing effect with pressure adjusting function is good |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107382008A (en) * | 2017-08-31 | 2017-11-24 | 河北国惠环保科技有限公司 | A kind of open waters Treatment of Sludge pyrolysis reactor and method for sludge treatment |
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| CN108675580A (en) * | 2018-07-03 | 2018-10-19 | 成都诺德源环保科技有限公司 | A kind of sludge treatment equipment and trash-removal device |
| CN108675580B (en) * | 2018-07-03 | 2021-06-25 | 成都诺德源环保科技有限公司 | Sludge treatment device and decontamination equipment |
| CN110180482A (en) * | 2019-06-21 | 2019-08-30 | 刘晓慧 | A kind of reaction kettle that the mixing effect with pressure adjusting function is good |
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Application publication date: 20160504 |