CN104150738B - A kind of drying method of organism particulate mud and portable anhydration system - Google Patents
A kind of drying method of organism particulate mud and portable anhydration system Download PDFInfo
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- CN104150738B CN104150738B CN201410391182.XA CN201410391182A CN104150738B CN 104150738 B CN104150738 B CN 104150738B CN 201410391182 A CN201410391182 A CN 201410391182A CN 104150738 B CN104150738 B CN 104150738B
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Abstract
The invention discloses a kind of drying method of organism particulate mud and portable anhydration system, utilize the selective absorbing feature of microwave, microwave is mummification Main Means but not assist measure, and method of the present invention need not for the organism particulate mud of particular types.The present invention realizes efficient water-removing, the most eukodal 1.6 kg of water/kWh of water rem oval; Simplify existing employing multiple means and be combined the method for carrying out mummification with microwave technology, reduce production cost, improve benefit; Can effective recycle heat by the setting of the device of heat exchanger, improve energy recycling rate; Compared with prior art, small volume, overall volume can vehicle-mounted mobile, is convenient to carry out drying and other treatment to mud in any place, convenient, flexible for designed equipment.
Description
Technical field
The present invention relates to a kind of microwave that utilizes and realize the dewatered further drying method of organism particulate mud and portable system, belong to solid waste reduction and application technology as the second resource field.
Background technology
Organism particulate mud refers to that in mud, water content is more than 90%, the mud that in over dry mud, organic content is greater than 95%.The water ratio reducing mud generally comprises dehydration and mummification two links.The mud that water ratio can be greater than 90% by dehydration is reduced to water ratio 50%-65%, then by mummification, moisture percentage in sewage sludge is reduced to 5%-35% further.Dehydration technique mainly comprises direct mechanical dehydration, adds amendment dehydration, microwave-assisted dehydration, electroosmotic dewatering, ultrasonic wave added dewater and enzyme engineering dehydration etc., correlative study and utilisation technology numerous.
Current drying equipment scale is large, investment is large, and the main external heat source that adopts is by modes such as convection current, radiation and conduction heat exchange, gradually reduces the water ratio of mud from outside to inside to requiring level.Be limited by the essence that traditional heating energy utilization efficiency is low, sludge drying energy consumption can be in any more, just may reach efficiency and balance between revenue and expenditure after only reaching certain scale, and non-most sewage work can bear.So sludge drying is mainly still taking the mode being certainly transported to dehydration mummification ground at present.But mud still moisture 50%-65%, the transportation cost Gao Qi of over dry mud per ton after processed, and the generation of diafiltration in transportation also can form large-scale pollution.
Prior art CN1762863A discloses a kind of sludge drying, process for reclaiming, CN203033865U disclose the microwave induced desiccation apparatus of a kind of sludge generated in municipal domestic sewage, CN203346241U discloses water high temperature double-source heat pump drying sludge system in a kind of microwave reinforced sun power, CN101875530A discloses a kind of thermal drying method for sludge and device, all disclose and utilize microwave to carry out drying and other treatment, but the effect of microwave be here only utilize conventional to microorganism cells broken wall, discharging wherein irreducible water, is auxiliary means.
The heat treated experimental technique of prior art CN102849905B greasy dirt, its microwave reactor used only 2-3L, be the equipment of laboratory study, industrialization level is lower, cannot consider the economy that microwave utilizes.
Prior art CN102826729A discloses a kind of oil base drilling fluid waste electromagnetic microwave treatment system and method, its key method utilizes that optical wavelength radiation is preheated to 80 degree, electromagnetic oscillation makes material be warming up to 150 degree and moisture is all evaporated, the effect of microwave is just evaporated the oil in the oil-containing material after moisture evaporate to dryness, and its microwave is not for vaporize water.
To sum up, above technology microwave-assisted mud dewatering method for mainly high-moisture percentage, high COD or BOD sewage, and the Main Function of microwave is that mummification energy consumption is high, mummification efficiency is low by impelling cell wall breaking and the auxiliary dewatering efficiency that improves.
Summary of the invention
1, the object of the invention is to solve drying method in prior art other modes need be adopted to be combined with microwave mode just can reach mummification object; cost is higher; and the problem that equipment is huger; and a kind of microwave that utilizes proposed realizes having dewatered the further drying method of organism particulate mud and portable anhydration system; meet subsequent disposal handle demand, there is the double effect of environment protection and economic utilization.
2, for achieving the above object, the technical scheme that the present invention takes is:
The portable anhydration system of organism particulate mud, comprise residual heat using device, microwave desiccation apparatus, anti-microwave leakage device, gas sampling refining plant, heat exchanger, condensed water collecting device, residual heat using device exit connects anti-microwave leakage device, and residual heat using device and anti-microwave leakage device are communicated with gas sampling refining plant respectively and are used for waste air; Anti-microwave leakage device is arranged on the entrance and exit place of microwave desiccation apparatus; The microwave desiccation apparatus that maintenance drying process is in negative pressure state is communicated with heat exchanger ingress, the outlet of heat exchanger is communicated with gas sampling refining plant with residual heat using device respectively, the heat of microwave desiccation apparatus is delivered to residual heat using device by heat exchanger, and the waste gas in heat exchanger is delivered to gas sampling refining plant; Condensed water collecting device is established in water vapour heat exchange place in heat exchanger, and collect the water of condensation in heat exchanger, the microwave frequency wherein in microwave desiccation apparatus is 2450MHz or 915MHz.
Further in specific embodiment, described residual heat using device front end inlet place is also provided with mud flattening device.
Further in specific embodiment, the ingress of described mud flattening device is also provided with mud dispersion and deceleration loading device.
Further in specific embodiment, the exit of described microwave desiccation apparatus is provided with dewatered sludge collection device.
Further in specific embodiment, described dewatered sludge collection device is communicated with cleaning apparatus.
The drying method of organism particulate mud, concrete mummification step is:
(1) select the organism particulate mud treating mummification, unit over dry mud is greater than 5%, moisture percentage in sewage sludge≤65% containing volatile organic matter;
(2) will treat that the mud of mummification is dispersed into the part contacted with microwave and has unidimensional scale≤3 × 10 at least
8/ microwave frequency used;
(3) treat dewatered sludge and carry out pre-treatment;
(4) treat that dewatered sludge carries out drying and other treatment by microwave desiccation apparatus to mud through pretreated, water rem oval 1.0-1.6 kg of water/kWh conversion is pressed in microwave power design, and microwave frequency is 2450MHz or 915MHz, maintains drying process and is in negative pressure state;
(5) delivered heat that the water vapor that mummification is formed obtains through heat exchange is used for mud preheating to residual heat using device;
(6) exhaust gas emission in residual heat using device, microwave leakage prevention device and heat exchanger is to gas sampling refining plant, and the water of condensation in the heat exchange of heat exchanger water vapour is collected by condensed water collecting device.
Further in specific embodiment, the loading mode of described microwave desiccation apparatus microwave is continous way or pulsed; Further in specific embodiment, described organic sludge is transported to dewatered sludge collection device after microwave desiccation apparatus, at dewatered sludge collection device place by cleaning apparatus dedusting.
Principle of the present invention:
The present invention is not the broken wall principle adopting microwave, the heating of employing microwave frequency measurment principle is the highest can only reach 200 DEG C, and the present invention is to the selective absorbing feature of microwave according to material, microwave is mummification Main Means but not assist measure, its Heating temperature can far surpass 200 DEG C in moment, and method of the present invention need not for the organism particulate mud of particular types.
3, the invention has the beneficial effects as follows:
(1) of the present invention by the selective absorbing principle of material to microwave, microwave is major technique, does not need other supplementary means dewatered sludges, can realize efficient water-removing, the most eukodal 1.6 kg of water/kWh of water rem oval, Heating temperature can far surpass 200 DEG C in moment.
(2) this invention simplifies existing employing multiple means and be combined the method for carrying out mummification with microwave technology, reduce production cost, improve benefit.
(3) the present invention can effective recycle heat by the setting of heat exchanger, raising energy recycling rate.
(4) the present invention reduces sludge drying energy consumption, can realize mummification again and Pollution abatement develops simultaneously, and meets environmental requirement.
(5) technology owing to adopting in prior art is that multiple means combines, equipment is huge, drying and other treatment efficiency is low, and the equipment that the method applied in the present invention is designed compared with prior art, small volume, overall volume can vehicle-mounted mobile, is convenient to carry out drying and other treatment to mud in any place, convenient, flexible.
Accompanying drawing explanation
Fig. 1 is this mud mobile dry gasifying device structural representation.
Embodiment
Below the drying method of a kind of organism of the present invention particulate mud and the embodiment of portable system are elaborated.
Embodiment 1:
The portable anhydration system of organism particulate mud, comprise mud dispersion and deceleration loading device, mud flattening device, residual heat using device, microwave desiccation apparatus, anti-microwave leakage device, gas sampling refining plant, heat exchanger, condensed water collecting device, the outlet of mud dispersion and deceleration loading device connects mud flattening device, the exit of mud flattening device is communicated with residual heat using device, residual heat using device exit connects anti-microwave leakage device, and residual heat using device and anti-microwave leakage device are communicated with gas sampling refining plant respectively and are used for waste air; Anti-microwave leakage device is arranged on the entrance and exit place of microwave desiccation apparatus; Microwave desiccation apparatus is communicated with heat exchanger ingress, the outlet of heat exchanger is communicated with gas sampling refining plant with residual heat using device respectively, the heat of microwave desiccation apparatus is delivered to residual heat using device by heat exchanger, and the waste gas in heat exchanger is delivered to gas sampling refining plant; Condensed water collecting device is established in water vapour heat exchange place in heat exchanger, and collect the water of condensation in heat exchanger, the microwave frequency wherein in microwave desiccation apparatus is 2450MHz or 915MHz.
The exit of microwave desiccation apparatus is provided with dewatered sludge collection device, and dewatered sludge collection device is communicated with cleaning apparatus.
The present invention, by the principle of material to the selective absorbing of microwave, effectively can carry out drying and other treatment to mud, and can carry out recycle to heat by residual heat using device and heat exchanger, and industrialization level is higher.
The drying method of organism particulate mud, concrete mummification step is:
(1) select the organism particulate mud treating mummification, unit over dry mud is greater than 5%, moisture percentage in sewage sludge≤65% containing volatile organic matter;
(2) will treat that the mud of mummification is dispersed into the part contacted with microwave and has unidimensional scale≤3 × 10 at least
8microwave frequency used;
(3) treat dewatered sludge and carry out pre-treatment;
(4) treat that dewatered sludge carries out drying and other treatment by microwave desiccation apparatus to mud through pretreated, water rem oval 1.0-1.6 kg of water/kWh conversion is pressed in microwave power design, microwave frequency is 2450MHz or 915MHz, maintain drying process and be in negative pressure state, the loading mode of described microwave desiccation apparatus microwave is continous way or pulsed;
(5) delivered heat that the water vapor that mummification is formed obtains through heat exchange is used for mud preheating to residual heat using device;
(6) exhaust gas emission in residual heat using device, microwave leakage prevention device and heat exchanger is to gas sampling refining plant, and the water of condensation in the heat exchange of heat exchanger water vapour is collected by condensed water collecting device;
(7) mass transport of mummification is to dewatered sludge collection device, at dewatered sludge collection device place by cleaning apparatus dedusting.
In advance mud is processed, make organism unit over dry mud be greater than 5%, moisture percentage in sewage sludge≤65% containing volatile organic matter, the better effects if of mummification can be made, instantaneous temperature far surpasses 200 DEG C, and common heating means are the highest can only be reached 200 DEG C and cannot reach treatment effect of the present invention.
Embodiment 2:
As different from Example 1, select water ratio be 65% domestic sewage sludge, adopt the work of 2450MHz microwave source continous way, mud is the pie of thick 12.2 centimetres (being approximately equal to 3 × 108/2450MHz), the conversion of microwave power 1.0 kg of water/electricity, can mummification to moisture 40%.
Embodiment 3:
As different from Example 1, select water ratio be 65% paper mill sludge, adopt the work of 915MHz microwave source continous way, mud is the pie of thick 32.8 centimetres (being approximately equal to 3 × 108/915MHz), the conversion of microwave power 1.0 kg of water/electricity, can mummification to moisture 45%.
Embodiment 4:
As different from Example 1, select water ratio be 63% municipal sludge, adopt the work of 2450MHz microwave source continous way, mud is the pie of thick 10 centimetres, microwave power 1.3 kg of water/electricity conversion, can mummification extremely moisture 20%.
Embodiment 5:
As different from Example 1, select water ratio be 50% printing and dyeing sludge, adopt the work of 915MHz microwave source continous way, mud is the pie of thick 15 centimetres, microwave power 1.5 kg of water/electricity conversion, can mummification extremely moisture 23%.
Embodiment 6:
As different from Example 1, select water ratio be 45% municipal sludge, adopt 2450MHz microwave source pulse operation, mud granule median size 1mm, microwave power 1.6 kg of water/electricity conversion, can mummification extremely moisture 3%.
Embodiment 7:
As different from Example 1, select water ratio be 50% paper mill sludge, adopt 915MHz microwave source pulse operation, mud granule median size 20mm, microwave power 1.3 kg of water/electricity conversion, can mummification extremely moisture 12%.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (8)
1. the portable anhydration system of organism particulate mud, it is characterized in that: comprise residual heat using device, microwave desiccation apparatus, anti-microwave leakage device, gas sampling refining plant, heat exchanger, condensed water collecting device, residual heat using device exit connects anti-microwave leakage device, and residual heat using device and anti-microwave leakage device are communicated with gas sampling refining plant respectively and are used for waste air; Anti-microwave leakage device is arranged on the entrance and exit place of microwave desiccation apparatus; The microwave desiccation apparatus that maintenance drying process is in negative pressure state is communicated with heat exchanger ingress, the outlet of heat exchanger is communicated with gas sampling refining plant with residual heat using device respectively, the heat of microwave desiccation apparatus is delivered to residual heat using device by heat exchanger, and the waste gas in heat exchanger is delivered to gas sampling refining plant; Condensed water collecting device is established in water vapour heat exchange place in heat exchanger, and collect the water of condensation in heat exchanger, the microwave frequency wherein in microwave desiccation apparatus is 2450MHz or 915MHz.
2. the portable anhydration system of organism particulate mud according to claim 1, is characterized in that: described residual heat using device front end inlet place is also provided with mud flattening device.
3. the portable anhydration system of organism particulate mud according to claim 2, is characterized in that: the ingress of described mud flattening device is also provided with mud dispersion and deceleration loading device.
4. the portable anhydration system of organism particulate mud according to claim 1, is characterized in that: the exit of described microwave desiccation apparatus is provided with dewatered sludge collection device.
5. the portable anhydration system of organism particulate mud according to claim 4, is characterized in that: described dewatered sludge collection device is communicated with cleaning apparatus.
6. use a drying method for the organism particulate mud of the arbitrary described system of claim 1-5, it is characterized in that concrete change step is:
(1) select to treat the organism particulate mud of mummification, unit treats that dewatered sludge contains volatile organic matter and is greater than 5%, mud is moisture≤and 65%;
(2) will treat that the mud of mummification is dispersed into the part contacted with microwave and has unidimensional scale≤3 × 10 at least
8/ Microwave Frequency used;
(3) treat dewatered sludge and carry out pre-treatment;
(4) treat that dewatered sludge carries out drying and other treatment by microwave desiccation apparatus to mud through pretreated, microwave power design water rem oval 1.0-1.6 kg of water/kWh conversion, microwave frequency is 2450MHz or 915MHz, maintains drying process and is in negative pressure state;
(5) delivered heat that the water vapor that mummification is formed obtains through heat exchange is used for mud preheating to residual heat using device;
(6) exhaust gas emission in residual heat using device, microwave leakage prevention device and heat exchanger is to gas sampling refining plant, and the water of condensation in the heat exchange of switch water vapour is collected by condensed water collecting device.
7. the drying method of organism particulate mud according to claim 6, is characterized in that: the loading mode of described microwave mummification dress microwave is continous way or pulsed.
8. the drying method of organism particulate mud according to claim 6, is characterized in that: described organic sludge is transported to dewatered sludge collection device after microwave desiccation apparatus, at dewatered sludge collection device place by cleaning apparatus dedusting.
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| CN107585983B (en) * | 2017-04-08 | 2023-10-24 | 仁诚建设有限公司 | Municipal sludge depth reduction method for microwave auxiliary treatment |
| CN109331756A (en) * | 2018-10-31 | 2019-02-15 | 江南大学 | A kind of pretreatment unit and technique of paper products filler |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101100344A (en) * | 2007-05-23 | 2008-01-09 | 郭银飞 | Treatment method for heating and drying sludge by microwave and low-temperature smoke gas |
| CN101289267A (en) * | 2007-04-20 | 2008-10-22 | 深圳市环源科技发展有限公司 | System and process for anhydration treatment of wet sludge |
| JP2010247111A (en) * | 2009-04-17 | 2010-11-04 | Tokyo Electric Power Co Inc:The | Sludge drying system |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101289267A (en) * | 2007-04-20 | 2008-10-22 | 深圳市环源科技发展有限公司 | System and process for anhydration treatment of wet sludge |
| CN101100344A (en) * | 2007-05-23 | 2008-01-09 | 郭银飞 | Treatment method for heating and drying sludge by microwave and low-temperature smoke gas |
| JP2010247111A (en) * | 2009-04-17 | 2010-11-04 | Tokyo Electric Power Co Inc:The | Sludge drying system |
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