CN107417059A - It is a kind of to improve debirs dry weight decrement and the method for dewatering - Google Patents

It is a kind of to improve debirs dry weight decrement and the method for dewatering Download PDF

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Publication number
CN107417059A
CN107417059A CN201710668396.0A CN201710668396A CN107417059A CN 107417059 A CN107417059 A CN 107417059A CN 201710668396 A CN201710668396 A CN 201710668396A CN 107417059 A CN107417059 A CN 107417059A
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debirs
reactor
dry weight
dewatering
reaction
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CN107417059B (en
Inventor
李响
甘雁飞
薛罡
陈红
张文启
叶婷婷
游继光
李君�
来思周
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Donghua University
National Dong Hwa University
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Donghua University
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00Treatment of sludge; Devices therefor
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00Treatment of sludge; Devices therefor
    • C02F11/12Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/121Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00Treatment of sludge; Devices therefor
    • C02F11/12Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/14Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents

Abstract

Debirs dry weight decrement and the method for dewatering are improved the invention provides a kind of, first, Organic Ingredients is configured to pretreating agent, it is stand-by;Then, debirs are weighed to pour into reactor, the pretreating agent is then added into reactor, is mixed evenly;Closed reactor, start to warm up pre-reaction;After insulation, the air bleeding valve of reactor is opened, gas caused by pre-reaction is all discharged, closes air bleeding valve, then opens charge valve, reducing gas is filled with into reactor, raises reactor internal pressure;Stop inflating again, close charge valve;Continue heating heating, start the second secondary response;After the second secondary response terminates, normal temperature is cooled to, reactor is opened, reacted solidliquid mixture is dehydrated, obtains mud cake.The present invention comprehensively utilizes the catalysis outgassing function of organic pretreating agent, promotes debirs dissolution, realizes that reduction catalystses react, significantly improves debirs dry weight reduced training and dewatering, and energy consumption is not high.

Description

It is a kind of to improve debirs dry weight decrement and the method for dewatering
Technical field
The invention belongs to debirs processing technology field, more particularly to one kind significantly to be carried by adding high-efficiency pretreatment agent The method of high debirs dry weight reduced training and dewatering.
Background technology
It is dirty that debirs refer to that the organic composition of high-moisture percentage (40%-99%) accounts for waste of the inorganic constituents more than 30% Mud, such as caused by kitchen garbage, spraying industry organic waste residues, organic height boiling raffinate, medicine synthesis waste residue and sewage treatment plant Excess sludge etc..With the fast development of social economy, industrial wastewater yield is more and more.According to statistics, in 2015, China Wastewater emission amount is up to 735.3 hundred million tons, and wherein industrial wastewater discharge total amount accounts for 27.1% of total amount or so, mainly with wide (Environmental Protection Department editorial board of State Statistics Bureau, Chinese environmental statistical yearbook based on the area such as east, Jiangsu, Shandong, Zhejiang and Henan [M] Beijing:China Statistics Press, 2016.).At so big waste water yield, the waste water in China more than 80% Reason factory can all use bioanalysis, and as an important step in wastewater treatment process, (national municipal water and wastewater engineering technology is ground Study carefully center Chinese cities sewage disposal scene and planning [J] China environmental protection industries, 2003 (1):32-35.), will then produce Raw substantial amounts of waste sludge, if these waste sludge directly fill or burning disposal, can cause large amount of land resources and the energy Waste, debirs decrement turn into China's energy-saving and emission-reduction major issue.
At present, the technology of debirs decrement has a lot, and some of which technology is to promote waste sludge dewatering to make its volume reduction, Without truly raising debirs dry weight reduced training.Such as deep dehydration technology, using the method for chemical conditioning, carry High waste dewatering performance of sludge, the only moisture finally deviate from, effect (CN is not reduced to the dry of debirs 103319066B);Also some technologies can realize debirs dry weight reduced training, but effect is very low, and cost is larger.Than Such as anaerobic digestion techniques, the digestive efficiency that it handles waste sludge is not general high, and equipment cost and cost of investment are higher, give up Thing sludge dewatering effect is poor, and imflammable gas caused by anaerobic digestion is also possible to exist security risk, and (China Reconstructs reports dirty Mud Anaerobic Digestion still has problems [J] water supply and drainages dynamic urgently to be resolved hurrily, 2011 (6):46.).For another example hot water Solution technology, the phenomenon of the short stream of steam easily occurs during debirs are handled, causes the waste sludge in pyrohydrolysis tank for it Uneven heating is even, so that the pyrohydrolysis heating-up time is longer, consumes energy larger (CN 104891766B).Also have in addition and use alkali Change cracks and mud Acidizing Technology processing debirs, and the dry weight reduced training of debirs is no more than 20%, and its is pre- Processing time is long so that waste efficiency of sludge treatment is relatively low (CN 103964657B).
To sum up, effectively improving for debirs dry weight reduced training and dewatering how is realized, is people in the art Member is directed to solving the problems, such as.
The content of the invention
The technical problem to be solved in the present invention is how to realize debirs dry weight reduced training and dewatering effective Improve.
In order to solve the above-mentioned technical problem, the technical scheme is that provide it is a kind of improve debirs dry weight decrement and The method of dewatering, it is characterised in that:This method comprises the steps of:
Step 1:Organic Ingredients is configured to pretreating agent, it is stand-by;
Step 2:Weigh debirs to pour into reactor, the pretreating agent of step 1 configuration then added into reactor, It is mixed evenly;
Step 3:After stirring, closed reactor, pre-reaction is started to warm up;After insulation, the exhaust of reactor is opened Valve, gas caused by pre-reaction is all discharged, closes air bleeding valve, then open charge valve, reducing gas is filled with into reactor, Raise reactor internal pressure;Then stop inflation, close charge valve;
Step 4:Continue heating heating, start the second secondary response;After the second secondary response terminates, normal temperature is cooled to, is opened Reactor, reacted solidliquid mixture is dehydrated, obtains mud cake.
Preferably, in the step 1, Organic Ingredients is one kind or more in oxalic acid, acetic acid, propionic acid, lactic acid and citric acid Kind.
Preferably, in the step 1, Organic Ingredients is configured to pretreating agent by following mass percent:Oxalic acid 0.5%- 10%th, acetic acid 1%-15%, propionic acid 15%-50%, lactic acid 15%-40%, citric acid 10%-55%, solvent are water.
Preferably, in the step 2, debirs are moisture content 40%-99% and organic composition accounts for inorganic constituents Mass percent is more than 30% waste.
It is highly preferred that excess sludge, kitchen garbage, spraying industry organic waste of the debirs for sewage treatment plant Slag, organic height boiling raffinate or medicine synthesis waste residue.
Preferably, in the step 2, the quality of the debirs weighed is 50-300g;Pretreating agent dosage is 0.1- The dry debirs of 4g/g.
Preferably, in the step 2, speed of agitator 80-200r/min, mixing time 5-30min.
Preferably, in the step 3, pre-reaction temperature control is 80-120 DEG C, pre-reaction time 10-180min;To Reducing gas is filled with reactor, reactor internal pressure is increased to 0.5-3.5MPa.
Preferably, in the step 4, the temperature control of the second secondary response at 120-270 DEG C, control by the time of the second secondary response It is made as 0.5-8h.
Preferably, in the step 4, the method for dehydration is:Suction filtration, press filtration, centrifugation.
It is highly preferred that in the step 4, the method for dehydration is specially:1) filter:Filter negative pressure be -0.04~- 0.09MPa, suction filtration time are 10-30min;2) press filtration:Press filtration pressure is 1-8MPa, time of filter pressing 1-10min;3) centrifugation point From:Centrifugal speed is 1000-8000r/min, centrifugation time 5-30min.
Method provided by the invention comprehensively utilizes the catalysis outgassing function of organic pretreating agent, promotes debirs dissolution, Realize that reduction catalystses react, significantly improve debirs dry weight reduced training and dewatering, and energy consumption is not high.Compared to existing There is technology, method provided by the invention has the advantages that:
(1) in the heating pre-reaction stage, pretreating agent significantly improves the catalysis outgassing function of reactor, promotes organic waste Thing is from solid phase to gas phase conversion, so as to improve the dry weight reduced training of debirs.
(2) appropriate reducibility gas is filled with to reactor, inside reactor is boosted, and persistently heated and rise to reactor Temperature, promote debirs further to decompose, make debirs from solid phase to liquid-phase conversion, further increase the dry of debirs Weight reduced training and dewatering.
(3) the debirs dry weight reduced training of pretreating agent is added compared with blank assay, can be carried from 15%-28% Up to 30%-55%.
(4) the debirs dewatering of pretreating agent is added compared with blank assay, its capillary water absorbing time (CST) The 32.7-52.3 seconds are down to from the 102.1-169.4 seconds.
Brief description of the drawings
Fig. 1 is to improve debirs dry weight decrement and the experimental provision schematic diagram of dewatering.
Embodiment
With reference to specific embodiment, the present invention is expanded on further.
Tested using the raising debirs dry weight decrement shown in Fig. 1 and the experimental provision of dewatering, it is described Improving the experimental provision of debirs dry weight decrement and dewatering includes reactor 1, and the bottom of reactor 1 is provided with heat supply power supply 2, The top of reactor 1 is provided with stirring motor 3, thermometer 4 and pressure gauge 5, the top cap of reactor 1 connect loading line, gas exhaust piping and Safety line, inflation inlet valve 6, burp valve 7 and safety valve are respectively provided with loading line, gas exhaust piping and safety line Door 8.
The experiment of following examples is carried out using the experimental provision.
Embodiment 1
(1) 1000g pretreating agents are first configured:By mass percentage 0.5% oxalic acid, 15% acetic acid, 10% citric acid and 74.5% water, i.e., 5g oxalic acid, 150g acetic acid, 100g citric acids and 745g water are weighed respectively, four mix, and suitably stir It is even, it is stand-by.
(2) then weigh 300g moisture content be 40% debirs pour into high-pressure reactor, then into reactor The pretreating agent that dosage is the dry debirs of 4g/g is added, that is, weighs 720g pretreating agents and pours into high-pressure reactor, is kept 30min is stirred under 80r/min rotating speed, debirs is sufficiently mixed uniformly with pretreating agent.
(3) after stirring, reactor is closed, preparation, which switches on power, starts to warm up pre-reaction, while ensures that material exists In course of reaction, stirring motor is persistently stirred with 80r/min rotating speed.When the temperature of charge in reactor rises to 100 DEG C, open Beginning countdown 10min, then collect airbag on set on the exhaust outlet of reactor, then open the burp valve of reactor, will Gas caused by pre-reaction is all collected, and after collection, closes burp valve.Then inflation inlet valve is opened again, is filled Enter appropriate reducing gas, such as argon gas, after reactor internal pressure is risen to 1.5MPa, stop applying argon gas, and then close and fill Gas port valve.
(4) continue to be heated to 150 DEG C to material heating, and material is kept thermotonus 6h.After reaction terminates, close Power supply is closed, stops insulation, reactor is cooled to normal temperature (thermometer is shown as normal temperature, and pressure gauge is shown as 0MPa), is opened anti- Device is answered, by the solidliquid mixture obtained after reaction under 8MPa mechanical pressure, press filtration 1min, obtains the mud cake of low-water-content, Drying, weighs.
(5) dry weight and capillary water absorbing time (CST) of debirs, learn debirs before and after being reacted by contrast Dry weight reduced training reaches 55%, CST and was down to from 645.2 seconds 32.7 seconds.
Embodiment 2
(1) 10g pretreating agents are first configured:15% propionic acid, 40% lactic acid, 10% oxalic acid, 11% acetic acid by mass percentage With 24% water, i.e., 1.5g propionic acid, 4g lactic acid, 1g oxalic acid, 1.1g acetic acid and 2.4g water are weighed respectively, five mix, and fit It is stand-by when stirring evenly.
(2) then weigh 200g moisture content be 99% debirs pour into high-pressure reactor, then into reactor The pretreating agent that dosage is the dry debirs of 0.1g/g is added, that is, weighs 0.2g pretreating agents and pours into high-pressure reactor, is protected Hold and stir 5min under 200r/min rotating speed, debirs is sufficiently mixed uniformly with pretreating agent.
(3) after stirring, reactor is closed, preparation, which switches on power, starts to warm up pre-reaction, while ensures that material exists In course of reaction, stirring motor is persistently stirred with 200r/min rotating speed.When the temperature of charge in reactor rises to 80 DEG C, open Beginning countdown 120min, then collect airbag on set on the exhaust outlet of reactor, then open the burp valve of reactor, will Gas caused by pre-reaction is all collected, and after collection, closes burp valve.Then inflation inlet valve is opened again, is filled Enter appropriate reducing gas, such as argon gas, after reactor internal pressure is risen to 0.5MPa, stop applying argon gas, and then close and fill Gas port valve.
(4) continue to be heated to 120 DEG C to material heating, and material is kept thermotonus 8h.After reaction terminates, close Power supply is closed, stops insulation, reactor is cooled to normal temperature (thermometer is shown as normal temperature, and pressure gauge is shown as 0MPa), is opened anti- Answer device, by the solidliquid mixture obtained after reaction under 1000r/min rotating speed centrifugal dehydration 30min, outwell supernatant afterwards, The mud cake of low-water-content is obtained, dries, weighs.
(5) dry weight and capillary water absorbing time (CST) of debirs, learn debirs before and after being reacted by contrast Dry weight reduced training reaches 30%, CST and was down to from 134.3 seconds 52.3 seconds.
Embodiment 3
(1) 10g pretreating agents are first configured:15% lactic acid, 55% citric acid and 30% water by mass percentage, i.e., claim respectively Take 1.5g lactic acid, 5.5g citric acids and 3g water, three to mix, suitably stir evenly, it is stand-by.
(2) then weigh 50g moisture content be 84% debirs pour into high-pressure reactor, then into reactor plus Enter the pretreating agent that dosage is the dry debirs of 0.5g/g, that is, weigh 4g pretreating agents and pour into high-pressure reactor, be maintained at 20min is stirred under 150r/min rotating speed, debirs is sufficiently mixed uniformly with pretreating agent.
(3) after stirring, reactor is closed, preparation, which switches on power, starts to warm up pre-reaction, while ensures that material exists In course of reaction, stirring motor is persistently stirred with 150r/min rotating speed.When the temperature of charge in reactor rises to 110 DEG C, Start countdown 60min, then collect airbag on set on the exhaust outlet of reactor, then open the burp valve of reactor, Gas caused by pre-reaction is all collected, after collection, closes burp valve.Then inflation inlet valve is opened again, Appropriate reducing gas, such as argon gas are filled with, after reactor internal pressure is risen to 1.5MPa, stops applying argon gas, and then closes Inflation inlet valve.
(4) continue to be heated to 180 DEG C to material heating, and material is kept thermotonus 5h.After reaction terminates, close Power supply is closed, stops insulation, reactor is cooled to normal temperature (thermometer is shown as normal temperature, and pressure gauge is shown as 0MPa), is opened anti- Device is answered, the solidliquid mixture obtained after reaction is filtered into dehydration 30min in the case where negative pressure is -0.04MPa pressure, obtained low aqueous The mud cake of rate, drying, weighs.
(5) dry weight and capillary water absorbing time (CST) of debirs, learn debirs before and after being reacted by contrast Dry weight reduced training reaches 42%, CST and was down to from 465.4 seconds 42.7 seconds.
Embodiment 4
(1) 500g pretreating agents are first configured:50% propionic acid, 10% citric acid, 10% oxalic acid and 30% by mass percentage Water, i.e., 250g propionic acid, 50g citric acids, 50g oxalic acid and 150g water are weighed respectively, four mix, and suitably stir evenly, stand-by.
(2) then weigh 300g moisture content be 70% debirs pour into high-pressure reactor, then into reactor The pretreating agent that dosage is the dry debirs of 2g/g is added, that is, weighs 180g pretreating agents and pours into high-pressure reactor, is kept 25min is stirred under 100r/min rotating speed, debirs is sufficiently mixed uniformly with pretreating agent.
(3) after stirring, reactor is closed, preparation, which switches on power, starts to warm up pre-reaction, while ensures that material exists In course of reaction, stirring motor is persistently stirred with 100r/min rotating speed.When the temperature of charge in reactor rises to 100 DEG C, Start countdown 30min, then collect airbag on set on the exhaust outlet of reactor, then open the burp valve of reactor, Gas caused by pre-reaction is all collected, after collection, closes burp valve.Then inflation inlet valve is opened again, Appropriate reducing gas, such as argon gas are filled with, after reactor internal pressure is risen to 1MPa, stops applying argon gas, and then closes and fills Gas port valve.
(4) continue to be heated to 200 DEG C to material heating, and material is kept thermotonus 3h.After reaction terminates, close Power supply is closed, stops insulation, reactor is cooled to normal temperature (thermometer is shown as normal temperature, and pressure gauge is shown as 0MPa), is opened anti- Device is answered, by the solidliquid mixture obtained after reaction under 1MPa mechanical pressure, press filtration 10min, obtains the mud cake of low-water-content, Drying, weighs.
(5) dry weight and capillary water absorbing time (CST) of debirs, learn debirs before and after being reacted by contrast Dry weight reduced training reaches 48%, CST and was down to from 515.5 seconds 39.3 seconds.
Embodiment 5
(1) 50g pretreating agents are first configured:25% citric acid, 10% acetic acid, 10% propionic acid and 55% by mass percentage Water, i.e., 12.5g citric acids, 5g acetic acid, 5g propionic acid and 27.5g water are weighed respectively, four mix, and suitably stir evenly, stand-by.
(2) then weigh 50g moisture content be 84% debirs pour into high-pressure reactor, then into reactor plus Enter the pretreating agent that dosage is the dry debirs of 1g/g, that is, weigh 8g pretreating agents and pour into high-pressure reactor, be maintained at 20min is stirred under 180r/min rotating speed, debirs is sufficiently mixed uniformly with pretreating agent.
(3) after stirring, reactor is closed, preparation, which switches on power, starts to warm up pre-reaction, while ensures that material exists In course of reaction, stirring motor is persistently stirred with 180r/min rotating speed.When the temperature of charge in reactor rises to 120 DEG C, Start countdown 30min, then collect airbag on set on the exhaust outlet of reactor, then open the burp valve of reactor, Gas caused by pre-reaction is all collected, after collection, closes burp valve.Then inflation inlet valve is opened again, Appropriate reducing gas, such as argon gas are filled with, after reactor internal pressure is risen to 1MPa, stops applying argon gas, and then closes and fills Gas port valve.
(4) continue to be heated to 220 DEG C to material heating, and material is kept thermotonus 3h.After reaction terminates, close Power supply is closed, stops insulation, reactor is cooled to normal temperature (thermometer is shown as normal temperature, and pressure gauge is shown as 0MPa), is opened anti- Device is answered, the solidliquid mixture obtained after reaction is filtered into dehydration 10min in the case where negative pressure is -0.09MPa pressure, obtained low aqueous The mud cake of rate, drying, weighs.
(5) dry weight and capillary water absorbing time (CST) of debirs, learn debirs before and after being reacted by contrast Dry weight reduced training reaches 48%, CST and was down to from 465.4 seconds 35.1 seconds.
Comparative example
The present embodiment does not add pretreating agent, is blank assay, for being contrasted with embodiment 1~5.
(1) debirs that 100g moisture content is 84% are weighed to pour into the reactor of high pressure, reactor is closed, prepares to connect Energization source starts to warm up pre-reaction, while opens stirring motor, and rotating speed is set to 200r/min, ensure material during the course of the reaction by It is hot uniform.When the temperature of charge in reactor rises to 120 DEG C, start countdown 180min, then in the exhaust outlet of reactor On put collection airbag, then open reactor burp valve, by caused by pre-reaction gas all collect, when collection finishes Afterwards, burp valve is closed.Then inflation inlet valve is opened again, is filled with appropriate reducing gas, such as argon gas, is made inside reactor After pressure rises to 3.5MPa, stop applying argon gas, and then close inflation inlet valve.
(2) continue to be heated to 270 DEG C to material heating, and material is kept thermotonus 0.5h.After reaction terminates, Power supply is closed, stops insulation, reactor is cooled to normal temperature (thermometer is shown as normal temperature, and pressure gauge is shown as 0MPa), is opened Reactor, by the solidliquid mixture obtained after reaction under 8000r/min rotating speed centrifugal dehydration 5min, outwell supernatant afterwards Liquid, the mud cake of low-water-content is obtained, dry, weigh.
(3) dry weight and capillary water absorbing time (CST) of debirs, learn debirs before and after being reacted by contrast Dry weight reduced training reaches 21%, CST and was down to from 465.4 seconds 160.2 seconds.
It can be seen that when adding pretreating agent, the dry weight reduced training and dewatering of debirs greatly improve.
It is described above, only presently preferred embodiments of the present invention, it is not any to the present invention in form and substantial limitation, It should be pointed out that for those skilled in the art, on the premise of the inventive method is not departed from, can also make Some improvement and supplement, these are improved and supplement also should be regarded as protection scope of the present invention.All those skilled in the art, Without departing from the spirit and scope of the present invention, when made using disclosed above technology contents it is a little more Dynamic, modification and the equivalent variations developed, it is the equivalent embodiment of the present invention;Meanwhile all substantial technologicals pair according to the present invention The variation, modification and evolution for any equivalent variations that above-described embodiment is made, still fall within the scope of technical scheme It is interior.

Claims (10)

1. a kind of improve debirs dry weight decrement and the method for dewatering, it is characterised in that:This method is by following steps group Into:
Step 1:Organic Ingredients is configured to pretreating agent, it is stand-by;
Step 2:Weigh debirs to pour into reactor, the pretreating agent of step 1 configuration, mixing are then added into reactor Stir;
Step 3:After stirring, closed reactor, pre-reaction is started to warm up;After insulation, the air bleeding valve of reactor is opened, will Gas caused by pre-reaction is all discharged, and closes air bleeding valve, then opens charge valve, and reducing gas is filled with into reactor, is made anti- Device internal pressure is answered to raise;Then stop inflation, close charge valve;
Step 4:Continue heating heating, start the second secondary response;After the second secondary response terminates, normal temperature is cooled to, opens reaction Device, reacted solidliquid mixture is dehydrated, obtains mud cake.
2. the method for a kind of raising debirs dry weight decrement as claimed in claim 1 and dewatering, it is characterised in that:Institute State in step 1, Organic Ingredients is the one or more in oxalic acid, acetic acid, propionic acid, lactic acid and citric acid.
3. the method for a kind of raising debirs dry weight decrement as claimed in claim 1 and dewatering, it is characterised in that:Institute State in step 1, Organic Ingredients is configured to pretreating agent by following mass percent:Oxalic acid 0.5%-10%, acetic acid 1%-15%, Propionic acid 15%-50%, lactic acid 15%-40%, citric acid 10%-55%, solvent are water.
4. the method for a kind of raising debirs dry weight decrement as claimed in claim 1 and dewatering, it is characterised in that:Institute State in step 2, debirs are that moisture content 40%-99% and organic composition account for the mass percent of inorganic constituents and be more than 30% waste.
5. the method for a kind of raising debirs dry weight decrement and dewatering as described in claim 1 or 4, its feature exist In:In the step 2, the quality of the debirs weighed is 50-300g;Pretreating agent dosage is that 0.1-4g/g does organic waste Thing.
6. the method for a kind of raising debirs dry weight decrement as claimed in claim 1 and dewatering, it is characterised in that:Institute State in step 2, speed of agitator 80-200r/min, mixing time 5-30min.
7. the method for a kind of raising debirs dry weight decrement as claimed in claim 1 and dewatering, it is characterised in that:Institute State in step 3, pre-reaction temperature control is 80-120 DEG C, pre-reaction time 10-180min;Also Primordial Qi is filled with into reactor Body, reactor internal pressure is set to be increased to 0.5-3.5MPa.
8. the method for a kind of raising debirs dry weight decrement as claimed in claim 1 and dewatering, it is characterised in that:Institute State in step 4, for the temperature control of the second secondary response at 120-270 DEG C, the time control of the second secondary response is 0.5-8h.
9. the method for a kind of raising debirs dry weight decrement as claimed in claim 1 and dewatering, it is characterised in that:Institute State in step 4, the method for dehydration is:Suction filtration, press filtration, centrifugation.
10. the method for a kind of raising debirs dry weight decrement as claimed in claim 9 and dewatering, it is characterised in that: In the step 4, the method for dehydration is specially:1) filter:Suction filtration negative pressure is -0.04~-0.09MPa, and the suction filtration time is 10- 30min;2) press filtration:Press filtration pressure is 1-8MPa, time of filter pressing 1-10min;3) centrifuge:Centrifugal speed is 1000- 8000r/min, centrifugation time 5-30min.
CN201710668396.0A 2017-08-07 2017-08-07 Method for improving organic waste dry weight reduction and dehydration performance Active CN107417059B (en)

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CN103771679A (en) * 2014-01-06 2014-05-07 浙江工业大学 Synergetic treatment method of energy-saving dehydration and efficient heavy metal removal of sewage and sludge
CN104193136A (en) * 2014-09-22 2014-12-10 河南工业大学 Method for improving sludge dewatering performance through organic acid pretreatment
CN104628233A (en) * 2014-12-30 2015-05-20 浙江海亮固废处理科技有限公司 Deep dehydration device and deep dehydration method for organic materials

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Publication number Priority date Publication date Assignee Title
CN103771679A (en) * 2014-01-06 2014-05-07 浙江工业大学 Synergetic treatment method of energy-saving dehydration and efficient heavy metal removal of sewage and sludge
CN104193136A (en) * 2014-09-22 2014-12-10 河南工业大学 Method for improving sludge dewatering performance through organic acid pretreatment
CN104628233A (en) * 2014-12-30 2015-05-20 浙江海亮固废处理科技有限公司 Deep dehydration device and deep dehydration method for organic materials

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