CN103373801B - Continuous dehydrating method and device for explosive production wastewater and sludge - Google Patents
Continuous dehydrating method and device for explosive production wastewater and sludge Download PDFInfo
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- CN103373801B CN103373801B CN201210116966.2A CN201210116966A CN103373801B CN 103373801 B CN103373801 B CN 103373801B CN 201210116966 A CN201210116966 A CN 201210116966A CN 103373801 B CN103373801 B CN 103373801B
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Abstract
The invention discloses a continuous dehydrating method and device for explosive production wastewater and sludge. The device comprises a sludge storage tank, a sludge thermal dehydration machine and a belt conveyor, wherein a sludge pipe is arranged between the sludge storage tank and the thermal dehydration machine and is provided with a sludge pump; the sludge thermal dehydration machine is provided with a spiral preheating pipe at the bottom and a spiral steam heating pipe at the upper part, and a water return pipe is arranged under the spiral steam heating pipe in the sludge thermal dehydration machine; and one side of the sludge thermal dehydration machine is provided with a sludge cooling tank in which a cold water injection pipe is arranged. By using the device disclosed by the invention, the dehydration rate of the sludge is increased, the dehydrated sludge structure is compact, and the sludge is small in size and convenient in transportation, storage and treatment. Meanwhile, any chemical agents are not needed to be added in the dehydration process, so that the pollution to the environment is reduced.
Description
Technical field
The invention belongs to the sludge dewatering treatment technical field in environmental project, particularly a kind of continuous dehydration equipment of explosive production wastewater mud.
Background technology
After explosive production goes out, in order to ensure its bin stability and security, usually make blasting explosive granules microcapsules, namely at the organic wall material of blasting explosive granules Surface coating one deck.Needing during recycling to remove filtering after the emulsification of wall material with alkali and surfactant etc. in water, utilizing after explosive drying, discharging filtrate and define a certain amount of explosive production wastewater.This waste water contains a large amount of wall material organic substances and surfactant etc., and organic pollution content is high, seriously polluted.This kind of waste water can adopt the method process of acid out, to remove the polluter in waste water.After acid out, produce a large amount of water-containing sludges, general moisture content 98% ~ 99%, is difficult to processed.
For the dewatering of this kind of mud, adopt conventional mud dewatering method as: mechanism filter-pressing dehydration or centrifugal dehydration, the equipment of employing mainly contains plate and frame type filter-press, belt mud dewatering equipment and centrifuge etc.These conventional dehydration methods and equipment, need to add chemical agent, as aluminium polychloride and polyacrylamide etc., to improve mud flocculation structure.Its operation bothers, and dewatering efficiency is low, and dewatered solids moisture percentage in sewage sludge is higher (general moisture content more than 75%) still, and sludge structure is loose, and volume is large, is unfavorable for transport, storage and process.
Summary of the invention
The object of the present invention is to provide a kind of explosive production wastewater process produce the continuous dehydration method and apparatus of mud, improve dewatering rate, reduce sludge volume.
A continuous dehydration method for explosive production wastewater mud, comprises the following steps:
The mud that step a. explosive production wastewater acid out produces enters in storage mud tank, and mechanical agitation is pulpous state uniformly;
Mud is pumped into sludge hot dewaterer by step b., and to be heated to temperature be 75-85 DEG C, carries out sludge dewatering, deviate from water and be back to hot dewaterer leading portion for preheating mud, and hot mud is from flowing to cooling bath.
Step c is to flowing to cooling bath hot mud impulse jet cold water, and cooling mud is 30-40 DEG C to temperature, makes mud form lump shape, and it is gone out by cooling bath end outlet.
Steps d. block mud falls in belt of belt conveyor, is exported on the conveyor belt after gravity dehydration by conveyer belt end.
Step b. heating-up temperature preferably 75 DEG C, 80 DEG C or 85 DEG C;
Described explosive production wastewater mud continuous dehydration device comprises mud basin, sludge hot dewaterer and ribbon conveyer.
Wherein said mud basin is opened type cylinder, inside establishes vertical mixer, will enter sludge agitation uniformly pulpous state.
Be provided with sludge pipe between mud basin and hot dewaterer, described sludge pipe arranges sludge pump.Arrange spiral economizer bank bottom described sludge hot dewaterer, top arranges helicoidal stream heating tube, and spiral economizer bank connects backflow water pipe;
Described sludge hot dewaterer side arranges mud cooling bath, arranges cold water injection pipe in described mud cooling bath;
Recirculation water tube inlet place is apart from hot sludge outlet baffle plate 15-30cm;
Helicoidal stream heating tube steam-out (SO) pipeline.
Cooling bath outlet damper height is 15-20cm.
Described mud cooling bath Base Heat mud flows into end horizontally set cold water injection pipe, playpipe bore 60-80mm, and playpipe is connected with cooling bath bottom coohng water water inlet pipe;
Playpipe top has row's diameter 20-30mm eyelet, eyelet center distance 60-80mm.
Eyelet is rule or Non-regular distribute;
The water yield is controlled by eyelet diameter and eyelet number, the hot mud that eyelet pulse water-spraying control flows into, make it cool and form lump shape, and gone out by cooling bath end outlet baffle plate by mud and drop down onto in belt of belt conveyor, cold water used is the waste water after wastewater treatment mud-water separation.
Described ribbon conveyer is positioned over cooling bath bottom, and conveyer belt is circulating, and conveyer belt is porous synthetic fiber filter cloth, falls on conveyer belt exported by conveyer belt end after further gravity dehydration in block mud.
Described ribbon conveyer is common belt conveyor, has additional U-shaped water leg under conveyer belt, collects cooling water, is discharged by water leg drainpipe.Water leg width is identical with strainer, and length is more than 2m.
Mud pumps into sludge hot dewaterer and is heated by top helicoidal stream heating tube by after the preheating of lower part helical economizer bank again.
Mud heating-up temperature starts to soften after reaching 75 DEG C, automatically shrinks and assembles and float on water layer surface, and mud internal moisture relies on gravity to deviate to enter lower water layer by mud hole, realizes sludge dewatering; Lower floor deviates from hot water and enters spiral economizer bank for preheating mud by the water pipe that refluxes, dehydration fever mud flow to cooling bath by the cooling bath inlet baffle between the dewaterer thermal treatment zone and mud cooling bath, by pulse water-spraying control, form lump shape mud, described spiral economizer bank connects backflow water pipe, and the hot water utilizing mud to deviate from carries out preheating, with saving heat energy to the mud that postorder enters by heat exchange, reduce disposal cost, Chinese effluent.Cooling bath outlet damper height is lower than hot sludge outlet baffle plate.
Described helicoidal stream heating tube steam-out (SO) pipeline, for heating mud, making mud soften, shrinking and assembling the hard-packed bulk of formation.
The present invention has following beneficial effect:
Through present device and method process, after dehydration, the block moisture percentage in sewage sludge of formation is lower than 30%, far below conventional dehydration methods.Dewatered sludge compact structure, sludge volume is little, is only 1/3 ~ 1/4 of plate and frame filter press, belt filter press or centrifuge dewatering sludge volume.
Accompanying drawing explanation
Fig. 1 is according to mud continuous dehydration treatment system schematic diagram of the present invention
Fig. 2 sludge hot dewaterer top view
Fig. 3 sludge hot dewaterer sectional view
The hot dewaterer cooling bath of Fig. 4, cold water injection pipe, backflow water pipe connect enlarged partial sectional view
Description of reference numerals
1, mud basin 2, mixer 3, sludge pump 4, recirculation water outlet pipe 5, main steam range 6, sludge hot dewaterer 7, mud cooling bath 8, cooling water inlet pipe 9, ribbon conveyer 10, water leg 11, backflow water pipe 12, water leg drainpipe 13, mud input pipe 14, spiral economizer bank 15, helicoidal stream heating tube 16, adjustable seats 17, cold water injection pipe 18, hot sludge outlet baffle plate 19, cooling bath outlet damper 20, reflux heat water inlet
Detailed description of the invention
With reference to Fig. 1, Fig. 2 Fig. 3 and Fig. 4.
The invention provides a kind of explosive production wastewater mud continuous dehydration equipment, it comprises mud basin 1, sludge hot dewaterer 6 and ribbon conveyer 9 three part.Wherein said mud basin 1 is cylinder, inside establishes vertical mixer 2, and the mud that explosive production wastewater acid out produces enters in mud basin and stirs into pulpous state;
Sludge hot dewaterer 6 comprises spiral economizer bank 14, helicoidal stream heating tube 15, cold water injection pipe 17 and backflow water pipe 11, spiral economizer bank 14 connects recirculation water outlet pipe 4, main steam range 5, mud input pipe 13, adjustable seats 16;
The hot water first utilizing mud to deviate from by spiral economizer bank after mud pumps into sludge hot dewaterer is by heat exchange preheating, main steam range 5 steam enters helicoidal stream heating tube 14 and heats mud, to T >=75 DEG C, mud is softened, shrinks and assemble the hard-packed bulk of formation, mud cooling bath 7 is entered by hot sludge outlet baffle plate 18, the cold water that cooling water inlet pipe 8 enters to T≤40 DEG C by pulse water-spraying control mud temperature, is formed lump shape, and it is gone out by cooling bath outlet damper 19.
Fall in block mud on ribbon conveyer 9 conveyer belt and exported by end after further gravity dehydration, deviate from after water is collected by water leg 10 and drain into Waste Water Treatment through drainpipe 12.Ribbon conveyer end exports dewatered sludge structure in lump shape closely, and moisture content is lower than 30%.
A kind of explosive production wastewater mud continuous dehydration equipment provided by the invention and method of operating, mainly comprise the following steps:
The mud that step a. explosive production wastewater acid out produces enters in storage mud tank 1, starts mixer 2 by sludge agitation uniformly pulpous state; The detailed process that described mud produces is staticly settle after explosive production wastewater is collected, sedimentation time 24-36h; Discharge upper strata waste water layer after precipitation, and add diluted mineral acid in waste water, regulate wastewater pH 2-3; Inorganic acid is hydrochloric acid, sulfuric acid or nitric acid; In waste water, be filled with compressed air after acid adding, aeration time 30-60min, pollutant floated and forms sludge blanket.
Mud is pumped into sludge hot dewaterer 6 by sludge pump 3 by step b., mud to 80 DEG C is heated by spiral economizer bank 14 and helicoidal stream heating tube 15, carry out sludge dewatering, deviate from water to enter 11 by recirculation water tube inlet 20 and be back to hot dewaterer leading portion through spiral economizer bank 14 preheating mud, Chinese effluent, hot mud is from flowing to mud cooling bath 7.
Step c is by cold water injection pipe 17 to flowing to hot mud impulse jet cold water in mud cooling bath 7, and cooling mud, to temperature 35 DEG C, makes mud form bulk.
Steps d. block mud is gone out by cooling water and is fallen on ribbon conveyer 9 conveyer belt, is exported on the conveyor belt, deviate from after water is collected by water leg 10 and discharge through water leg drainpipe 12 after further gravity dehydration by conveyer belt end.
Actual processing effect shows: the mud of this kind of explosive production wastewater acid out generation, through present device and method process, does not need additional chemical agent, and after dehydration, the block moisture percentage in sewage sludge of formation is lower than 30%, far below conventional dehydration methods.Dewatered sludge compact structure, sludge volume is little, is only 1/3 ~ 1/4 of plate and frame filter press, belt filter press or centrifuge dewatering sludge volume.
Claims (9)
1. an explosive production wastewater mud continuous dehydration device, comprises mud basin, sludge hot dewaterer and ribbon conveyer,
Be provided with sludge pipe between mud basin and hot dewaterer, described sludge pipe arranges sludge pump; Arrange spiral economizer bank bottom described sludge hot dewaterer, top arranges helicoidal stream heating tube, and spiral economizer bank connects backflow water pipe; Described sludge hot dewaterer side arranges mud cooling bath, and described mud cooling bath Base Heat mud flows into end horizontally set cold water injection pipe.
2. explosive production wastewater mud continuous dehydration device as claimed in claim 1; It is characterized in that described playpipe bore 60-80mm, playpipe is connected with cooling bath bottom coohng water water inlet pipe; Described playpipe top has row's diameter 20-30mm eyelet, eyelet center distance 60-80mm; Described eyelet is rule or Non-regular distribute.
3. explosive production wastewater mud continuous dehydration device as claimed in claim 1; It is characterized in that described ribbon conveyer is positioned over cooling bath bottom, conveyer belt is circulating, and conveyer belt is porous synthetic fiber filter cloth.
4. explosive production wastewater mud continuous dehydration device as claimed in claim 3; It is characterized in that described conveyer belt has U-shaped water leg.
5. explosive production wastewater mud continuous dehydration device as claimed in claim 1; It is characterized in that cooling bath is provided with cooling bath outlet damper.
6. explosive production wastewater mud continuous dehydration device as claimed in claim 5; It is characterized in that described sludge hot dewaterer connects mud cooling bath side and arranges hot sludge outlet baffle plate.
7. explosive production wastewater mud continuous dehydration device as claimed in claim 6; It is characterized in that cooling bath outlet damper height is lower than hot sludge outlet baffle plate.
8. adopt an explosive production wastewater mud continuous dehydration method for dewater unit described in any one in claim 1-6, it is characterized in that, comprise the following steps:
The mud that step a. explosive production wastewater acid out produces enters in storage mud tank, and mechanical agitation is pulpous state uniformly;
Mud is pumped into sludge hot dewaterer by step b., and to be heated to temperature be 75-85 DEG C, carries out sludge dewatering, deviate from water and be back to hot dewaterer leading portion for preheating mud, and hot mud is from flowing to cooling bath;
Step c is to flowing to cooling bath hot mud impulse jet cold water, and cooling mud is 30-40 DEG C to temperature, makes mud form lump shape, and it is gone out by cooling bath end outlet;
Steps d. block mud falls in belt of belt conveyor, is exported on the conveyor belt after gravity dehydration by conveyer belt end.
9. explosive production wastewater mud continuous dehydration method as claimed in claim 8, it is characterized in that, described heating-up temperature is 75 DEG C, 80 DEG C or 85 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210116966.2A CN103373801B (en) | 2012-04-20 | 2012-04-20 | Continuous dehydrating method and device for explosive production wastewater and sludge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210116966.2A CN103373801B (en) | 2012-04-20 | 2012-04-20 | Continuous dehydrating method and device for explosive production wastewater and sludge |
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| CN103373801A CN103373801A (en) | 2013-10-30 |
| CN103373801B true CN103373801B (en) | 2015-04-29 |
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| CN201210116966.2A Expired - Fee Related CN103373801B (en) | 2012-04-20 | 2012-04-20 | Continuous dehydrating method and device for explosive production wastewater and sludge |
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| CN105084701A (en) * | 2014-05-05 | 2015-11-25 | 青岛大学 | Microwave heating and dehydrating treatment method for sludge in explosive production waste water |
| CN105084577B (en) * | 2014-05-05 | 2017-05-10 | 青岛大学 | Method for treating high-concentration water-based ink waste liquid and dehydrating sludge in high-concentration water-based ink waste liquid |
| CN105084700A (en) * | 2014-05-05 | 2015-11-25 | 青岛大学 | Infrared-ray-heating continuous dehydration method and apparatus for sludge |
| CN105084698A (en) * | 2014-05-05 | 2015-11-25 | 青岛大学 | Microwave-heating continuous dehydration method and apparatus for sludge |
| CN105084578B (en) * | 2014-05-05 | 2017-11-21 | 青岛大学 | A kind of high concentration aqueous's ink liquid waste processing and its method for sludge dewatering |
| CN105084699A (en) * | 2014-05-05 | 2015-11-25 | 青岛大学 | In-depth dehydration treatment method for sludge in explosive production waste water |
| CN105084702A (en) * | 2014-05-05 | 2015-11-25 | 青岛大学 | Deep dehydration method for wax-recovered sludge in wax printing waste water |
| CN105084703A (en) * | 2014-05-05 | 2015-11-25 | 青岛大学 | Microwave irradiation dehydration method for wax-recovered sludge in wax printing waste water |
| CN108862982A (en) * | 2017-12-13 | 2018-11-23 | 中山市和智电子科技有限公司 | A kind of zero tail gas compost reaction system having both sludge dewatering |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1082007A (en) * | 1992-04-01 | 1994-02-16 | 德士古发展公司 | The processing of sewage sludge |
| CN1631821A (en) * | 2004-12-17 | 2005-06-29 | 清华大学 | Urban sludge treatment method |
| CN101343137A (en) * | 2008-05-28 | 2009-01-14 | 罗德春 | Method for innocent treatment of bottom oil sludge, scruff and active sludge in petro-chemical industry |
| WO2010107263A3 (en) * | 2009-03-18 | 2010-12-23 | 코리아워터텍 주식회사 | Sludge hydrolysis device, a sludge hydrolysis method using the same, and a contact type of heat exchange unit and steam type of heat exchange unit provided in the sludge hydrolysis device |
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2012
- 2012-04-20 CN CN201210116966.2A patent/CN103373801B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1082007A (en) * | 1992-04-01 | 1994-02-16 | 德士古发展公司 | The processing of sewage sludge |
| CN1631821A (en) * | 2004-12-17 | 2005-06-29 | 清华大学 | Urban sludge treatment method |
| CN101343137A (en) * | 2008-05-28 | 2009-01-14 | 罗德春 | Method for innocent treatment of bottom oil sludge, scruff and active sludge in petro-chemical industry |
| WO2010107263A3 (en) * | 2009-03-18 | 2010-12-23 | 코리아워터텍 주식회사 | Sludge hydrolysis device, a sludge hydrolysis method using the same, and a contact type of heat exchange unit and steam type of heat exchange unit provided in the sludge hydrolysis device |
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Inventor after: Liu Rongzhan Inventor after: Zhang Bin Inventor after: Hao Longyun Inventor after: Zou Yihui Inventor after: Xu Quan Inventor after: Ma Le Inventor before: Liu Rongzhan Inventor before: Ma Le Inventor before: Hao Longyun Inventor before: Xu Quan Inventor before: Zou Yihui |
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Free format text: CORRECT: INVENTOR; FROM: LIU RONGZHAN MA LE HAO LONGYUN XU QUAN ZOU YIHUI TO: LIU RONGZHAN ZHANG BIN HAO LONGYUN ZOU YIHUI XU QUAN MA LE |
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