CN204237694U - A kind of stalk and wood chip realize the equipment of deeply dehydrating sludge - Google Patents
A kind of stalk and wood chip realize the equipment of deeply dehydrating sludge Download PDFInfo
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- CN204237694U CN204237694U CN201420639845.0U CN201420639845U CN204237694U CN 204237694 U CN204237694 U CN 204237694U CN 201420639845 U CN201420639845 U CN 201420639845U CN 204237694 U CN204237694 U CN 204237694U
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Abstract
The utility model relates to the equipment that a kind of stalk and wood chip realize deeply dehydrating sludge, and it comprises stirrer, spiral pump, High pressure feeding pump, autoclave diaphragm pressure filter, rotary conveyor, warehouse, worm conveyor and sludge crusher; Wherein, described stirrer is connected with high pressure diaphragm pressure filter respectively by spiral pump, High pressure feeding pump; Described rotary conveyor one end and the docking of autoclave diaphragm pressure filter, the top docking of the other end and warehouse; One is provided with for the perforated pipe of oxygenation of ventilating in the bottom of described warehouse; Described worm conveyor one end and warehouse docking, the other end and sludge crusher docking.The utility model adopts stalk, wood chip carries out sludge conditioning, realize the deep dehydration of mud fast, and utilize spontaneous fermentation the water ratio of mud to be reduced further, with multiple disposal requirements such as satisfied burning, landfill, Land_use change, for further recycling provides condition.
Description
[technical field]
The utility model relates to a kind of device for dehydrating sladge waste, is specifically related to the equipment that a kind of stalk and wood chip realize deeply dehydrating sludge, belongs to sludge treatment device technical field.
[background technology]
Mud is the byproduct produced in sewage treatment process.Containing more organism in mud, thus there is certain calorific value, can be used for burning.Containing nutritive ingredients such as nitrogen phosphorus in mud, can be made into composite fertilizer and be back to soil.The material of construction such as mud also can be used for baking bricks, cement.But because moisture percentage in sewage sludge is high, volume is large, and cross shear is poor, again containing a large amount of bacteriums, easily blackout is smelly, and inconvenience is transported, and is out of favour in a lot of practical application.
The principle of sludge disposal is " minimizing, innoxious, resource utilization ", and wherein minimizing is prerequisite.The decrement of mud comprises minimizing volume (subtracting appearance) and reduces weight (loss of weight).Current, sewage work commonly uses polyacrylamide class chemical substance and nurses one's health mud, and adopts band press or whizzer to carry out sludge dewatering, and then these dewatered sludges are sent to landfill yard and carry out landfill.Conventional dewatering makes the water ratio of dewatered sludge to reach about 80%.According to the requirement to landfill mud in " urban wastewater treatment firm sludge disposal blended landfill shale " (GB/T 23485--2009), water ratio palpus≤60%; On November 26th, 2010; Environmental Protection Department general office issues " notices about strengthening the preventing and controlling of urban wastewater treatment firm sludge pollution " (ring is done [2010] No. 157) requires that mud to be transported factory circle to store by sewage work for the purpose of (namely not processing disposal) further, must by sludge dewatering to water ratio less than 50%.Therefore the mud safe disposal difficulty that water ratio is high, becomes the large problem that puzzlement sewage work normally runs.
In order to reduce the water ratio of dewatered sludge, deeply dehydrating sludge technology is arisen at the historic moment.Realize the deep dehydration of mud, make the water ratio of mud reach 60% even less than 50%, need to make a breakthrough on the conditioning technology of mud and the Technology in Pressing of mud.The Technology in Pressing of mud is embodied in the development of plate-and-frame filter press, as autoclave diaphragm plate-and-frame filter press, high pressure whole steel sheet plate-and-frame filter press, elasticity pressure filter etc.The conditioning of mud mainly contains two class technology, and a class makes amendment with iron trichloride and lime, and addition is about 30% of mud dry weight; Another kind of is take sludge solidifying agent as the inorganic conditioner of main component, and addition is not 5 ~ 20% of mud dry weight not etc.These sludge conditioning methods reduce making moisture percentage in sewage sludge, while namely volume reduces, due to the interpolation of chemical substance, make again mud weight increase.The inorganic salts material added reduces the calorific value of mud, is unfavorable for that thermal incineration utilizes; Increase the iron aluminium salt in mud, be also unfavorable for Land_use change.Although adopt these methods to make sewage water ratio reach national standard requirement, can accept for landfill place.But because mud body volume is large, landfill is still makeshift.
Therefore, for solving the problems of the technologies described above, necessaryly provide a kind of novel equipment realizing deeply dehydrating sludge with stalk and wood chip, to overcome described defect of the prior art.
[utility model content]
For solving the problems of the technologies described above, the purpose of this utility model is to provide a kind of stalk and wood chip to realize the equipment of deeply dehydrating sludge, it adopts stalk, wood chip to carry out sludge conditioning, realizes the deep dehydration of mud fast, and utilizes spontaneous fermentation that the water ratio of mud is reduced further.
For achieving the above object, the technical scheme that the utility model is taked is: a kind of stalk and wood chip realize the equipment of deeply dehydrating sludge, and it comprises stirrer, spiral pump, High pressure feeding pump, autoclave diaphragm pressure filter, rotary conveyor, warehouse, worm conveyor and sludge crusher; Wherein, described stirrer is connected with autoclave diaphragm pressure filter respectively by spiral pump, High pressure feeding pump; Described rotary conveyor one end and the docking of autoclave diaphragm pressure filter, the top docking of the other end and warehouse; One is provided with for the perforated pipe of oxygenation of ventilating in the bottom of described warehouse; Described worm conveyor one end and warehouse docking, the other end and sludge crusher docking.
The equipment that stalk of the present utility model and wood chip realize deeply dehydrating sludge is set to further: described warehouse is cylindrical structure, its aspect ratio about 1: 1.
The equipment that stalk of the present utility model and wood chip realize deeply dehydrating sludge is also set to: the rotating speed of described stirrer is 30 ~ 120r/min.
Compared with prior art, the utility model has following beneficial effect: the utility model adopts stalk, wood chip carries out sludge conditioning, realize the deep dehydration of mud fast, and utilize spontaneous fermentation that the water ratio of mud is reduced further, with multiple disposal requirements such as satisfied burning, landfill, Land_use change, for further recycling provides condition; Meanwhile, because moisture percentage in sewage sludge is low, pathogenic bacterium are few, odorless, and calorific value is high.
[accompanying drawing explanation]
Fig. 1 is the schematic diagram that stalk of the present utility model and wood chip realize the equipment of deeply dehydrating sludge.
[embodiment]
Refer to shown in Figure of description 1, the utility model is the equipment that a kind of stalk and wood chip realize deeply dehydrating sludge, and it is made up of a few parts such as stirrer 1, spiral pump 2, High pressure feeding pump 3, autoclave diaphragm pressure filter 4, rotary conveyor 5, warehouse 6, worm conveyor 7 and sludge crushers 8.
Wherein, described stirrer 1 is connected with autoclave diaphragm pressure filter 4 respectively by spiral pump 2, High pressure feeding pump 3.This stirrer 1 is for mixing mud (water ratio 95 ~ 97%) and amendment (mixture of stalk and wood chip) in stirrer 1.Described spiral pump 2, High pressure feeding pump 3 dewater for the mud after stirring is squeezed into autoclave diaphragm pressure filter 4.
Described rotary conveyor 5 one end and autoclave diaphragm pressure filter 4 dock, the docking of the top of the other end and warehouse 6, and it sends into warehouse 6 for the dehydrated sludge cake produced after being dewatered by autoclave diaphragm pressure filter 4.
In described warehouse 6 for storing dehydrated sludge cake, moisture percentage in sewage sludge is made to be down to less than 40%.Described warehouse 6 is cylindrical structure, its aspect ratio about 1: 1.The bottom of this warehouse 6 is provided with one for the perforated pipe 9 of oxygenation of ventilating, the spontaneous fermentation of oxygen accelerate sludge, and the heat produced, the temperature of mud can be made to rise to centigradetemperature 50 ~ 70 degree, and the water ratio of mud also because of hot blast take away, aerobic respiration and drop to 30 ~ 40%.
Described worm conveyor 7 one end and warehouse 6 dock, and the other end and sludge crusher 8 dock, and it carries out fragmentation for the dehydrated sludge cake in warehouse 6 is sent into sludge crusher 8.
The concrete steps adopting aforesaid device to carry out Deep dehydration technique to mud are as follows:
1), stalk and wood chip are carried out respectively pulverize, mill after mixing, use as amendment; Wherein, crushed stalk, be milled into particle diameter 300 ~ 1200 microns; Wood chip is pulverized, is milled as particle diameter 300 ~ 1200 microns; The weight ratio of stalk and wood chip is (1 ~ 3): 1; Described stalk is specially wheat stalk, maize straw, paddy stalk, wheat stalk, cotton stalk or sugarcane stalk; Described wood chip is specially sawdust, the wood shavings powder of furniture factory converted timber.Employing stalk, wood chip (wood powder) carry out sludge conditioning, are different from traditional organic polymer class (as positively charged ion polyacrylamide PAM) and are different from the amendment that lime conventional in current deep dehydration, iron aluminium salt or flyash, cement etc. reduce sludge calorific value; Though be also different from coal dust class sludge calorific value can be improved, be unfavorable for the amendment of follow-up lasting spontaneous fermentation.
2), mud and amendment are mixed in stirrer 1, and stirs 30 ~ 60min; Wherein, described amendment accounts for 5 ~ 10% of mud weight; The rotating speed of stirrer is 30 ~ 120r/min.
3), the mud after stirring is squeezed into autoclave diaphragm pressure filter 4 and dewaters, make mud form the dehydrated sludge cake of water ratio less than 60%; Wherein, first conditioned mixing sludge is squeezed in autoclave diaphragm pressure filter 4 by spiral pump 2, after autoclave diaphragm pressure filter 4 pressure reaches 0.6MPa, continues charging by High pressure feeding pump 3, until all mixing sludge enters in autoclave diaphragm pressure filter 4.Dehydrated sludge cake is delivered in warehouse 6 by a rotary conveyor defeated 5 and is stacked.
4), dehydrated sludge cake is put into warehouse 6 and stack for some time, make moisture percentage in sewage sludge be down to less than 40%; Wherein, the time of stacking is 7 ~ 10 days.Due to the heat that mud spontaneous fermentation produces in warehouse 6, the temperature of mud can be made to rise to centigradetemperature 50 ~ 70 degree, and the water ratio of mud also because of hot blast take away, aerobic respiration and drop to 30 ~ 40%.
5), afterwards dehydrated sludge cake is sent into sludge crusher 8 and be broken into the mud granule that particle diameter is 5 ~ 15 millimeters, so that further follow-up disposal.Specifically, the mud in described warehouse 6 delivers to sludge crusher 8 by a worm conveyor 7.
Mud after above-mentioned process is because water ratio is low, pathogenic bacterium are few, odorless, and calorific value is high, can be used for land reclamation, and power plant or cement mill are burned, landfill etc.
Below for stalk of the present utility model and wood chip realize an application example of the equipment of deeply dehydrating sludge:
Certain sewage work processes 100,000 tons of sanitary sewages day, 20 tons, daily output over dry mud, concentration basin is had in factory, moisture percentage in sewage sludge 97% after concentrated, adopt that polymer is positive carries out sludge conditioning from polyacrylamide, with the dehydration of band press, produce the mud cake about 100 tons of water ratio about 80% after dehydration every day, wherein the organic outlet accounting for 50% mud of mud dry weight is a great problem that this factory of puzzlement runs.
In the application of this Technology, the mud of water ratio 97% after concentrated, its volume every day 667 cubic metres, namely 28 cubes ms/h.First thickened sludge delivers to two useful volumes with spiral pump is that in the sludge conditioning tank of 10 cubic metres, (residence time is 43 minutes) fully mixes with straw powder, wood chip.For realizing this purpose, each conditioning tank adopts a stirrer being with frame paddle, stirs with the speed of per minute 60 turns.
Through repetition test, the ratio of straw powder and wood powder is 1: 1, and dosage is 7% of sludge dry solids, and namely dosage is each conditioning tank dosage per hour is about 30kg, amounts to 60kg/h, the consumption of every day about 1.5 tons.Straw powder and wood chip are the powdery substance of particle diameter 300 ~ 1200 microns.
Mud after modified, sends into two spiral pumps (every platform spiral pump flow is 14 cubes ms/h) in the autoclave diaphragm plate-and-frame filter press of two 500 square metres and carries out deep dehydration.High pressure sheet frame press filteration system is made up of pressure filter, hydraulic efficiency system, low pressure feed spiral pump, high pressure charging spiral pump, high-pressure hydraulic pump (diaphragm pressing pump), pressurized air blowback system.Mixing sludge is first by the low pressure screw pump (Q=50m of high flow capacity, low lift
3/ h, pressure P=0.6MPa, gas-distributing motor power 15kW, frequency conversion is adjustable) toward charging in plate-and-frame filter press, after in pressure filter, pressure reaches 0.6MPa, system switches, by low flow, high-lift High pressure feeding pump (Q=20m
3/ h, pressure P=1.2MPa, gas-distributing motor power 15kW, frequency conversion is adjustable) and continue charging, until all mixing sludge enters in plate-and-frame filter press, this fill process approximately needs 1.5h; Stop after mud, by diaphragm pressing pump (Q=10m
3/ h, pressure P=2.0MPa, gas-distributing motor 11kW, frequency conversion is adjustable) open work, constantly in diaphragm plate, inject high pressure tap water (squeeze pressure reaches 2.0MPa), a drum pressure filter barrier film carries out press dewatering to the mud in filter chamber, and this expressing process approximately needs 1.5h; After having squeezed, run pneupress system, the residual mud in mud pipe and the filtrate in film chamber are entered to pressure filter center and carries out blowback and wash; Finally, open filter plate discharging, be delivered to storage in warehouse of sludge by worm conveyor or rotary conveyor, stacked.Mud after modified, after the press filtration of autoclave diaphragm board and frame machine, can make the water ratio of mud be down to less than 60%, and mud, in block, firmly can be held with hand.
Block mud every day after dehydration about 50 tons, namely about 2.1 tons per hour, rotary conveyor is adopted to deliver to warehouse of sludge.Warehouse of sludge diameter is 8.6 meters, high 8.6 meters, useful volume about 500 cubic metres.The sewage sludge storage time is 10 days.Warehouse adopts the on-the-spot coiling of glass reinforced plastic, and bottom is covered with boring aeration pipe, and Root's blower provides ventilation by boring aeration pipe.The value of wind supply quantity is every 1kg VSS oxygen requirement is the O2 of 0.1kg, and the coefficient of oxygen utilization of perforated pipe is 6%.Adopt 2 roots blowers in actual practicality, air quantity is 40m
3/ min, blast is 9 meters, joins that to detest power of motor be 55kw.The compressed air temperature provided due to gas blower is higher, the temperature of mud can be promoted, promote bacterial classification aerobic respiration, and the moisture taken away in mud, due to bacterial classification spontaneous fermentation in domestic sludge, air heating, the mechanism actings in conjunction such as moisture stripping, the water ratio of dewatered sludge can be made to be reduced to 30 ~ 40% further, and temperature increase is to 50 ~ 70 degrees Celsius.
Mud delivers to sludge crusher from warehouse through worm conveyor, is become by sludge crushing particle diameter to be the mud granule of 5 ~ 15 millimeters, so that further follow-up disposal.
Above embodiment is only the preferred embodiment of this creation, and not in order to limit this creation, any amendment made within all spirit in this creation and principle, equivalent replacement, improvement etc., within the protection domain that all should be included in this creation.
Claims (3)
1. realize an equipment for deeply dehydrating sludge with stalk and wood chip, it is characterized in that: comprise stirrer, spiral pump, High pressure feeding pump, autoclave diaphragm pressure filter, rotary conveyor, warehouse, worm conveyor and sludge crusher; Wherein, described stirrer is connected with autoclave diaphragm pressure filter respectively by spiral pump, High pressure feeding pump; Described rotary conveyor one end and the docking of autoclave diaphragm pressure filter, the top docking of the other end and warehouse; One is provided with for the perforated pipe of oxygenation of ventilating in the bottom of described warehouse; Described worm conveyor one end and warehouse docking, the other end and sludge crusher docking.
2. stalk as claimed in claim 1 and wood chip realize the equipment of deeply dehydrating sludge, it is characterized in that: described warehouse is cylindrical structure, its aspect ratio about 1: 1.
3. stalk as claimed in claim 1 and wood chip realize the equipment of deeply dehydrating sludge, it is characterized in that: the rotating speed of described stirrer is 30 ~ 120r/min.
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| CN201420639845.0U CN204237694U (en) | 2014-10-25 | 2014-10-25 | A kind of stalk and wood chip realize the equipment of deeply dehydrating sludge |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104445853A (en) * | 2014-10-25 | 2015-03-25 | 陈列鑫 | Method and equipment for realizing deep dehydration of sludge by using straws and sawdust |
| CN105253978A (en) * | 2015-11-13 | 2016-01-20 | 黑龙江中科瑞合环保技术服务有限公司 | Mixed dewatering device and dewatering method for replacing flocculating agents with straw |
| CN105439409A (en) * | 2015-11-19 | 2016-03-30 | 光大环保技术研究院（深圳）有限公司 | Sludge and straw mixed squeezing treatment method and device |
| CN106316072A (en) * | 2016-10-14 | 2017-01-11 | 盐城琛丹低碳技术研究院有限公司 | Preparation method of high-efficiency sludge dewatering agent |
| CN109250883A (en) * | 2018-11-27 | 2019-01-22 | 内蒙古济世源环保生物科技有限公司 | Method for sludge treatment |
-
2014
- 2014-10-25 CN CN201420639845.0U patent/CN204237694U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104445853A (en) * | 2014-10-25 | 2015-03-25 | 陈列鑫 | Method and equipment for realizing deep dehydration of sludge by using straws and sawdust |
| CN104445853B (en) * | 2014-10-25 | 2017-03-08 | 丁海港 | A kind of method and apparatus realizing deeply dehydrating sludge with straw and wood flour |
| CN105253978A (en) * | 2015-11-13 | 2016-01-20 | 黑龙江中科瑞合环保技术服务有限公司 | Mixed dewatering device and dewatering method for replacing flocculating agents with straw |
| CN105439409A (en) * | 2015-11-19 | 2016-03-30 | 光大环保技术研究院（深圳）有限公司 | Sludge and straw mixed squeezing treatment method and device |
| CN106316072A (en) * | 2016-10-14 | 2017-01-11 | 盐城琛丹低碳技术研究院有限公司 | Preparation method of high-efficiency sludge dewatering agent |
| CN106316072B (en) * | 2016-10-14 | 2019-01-25 | 盐城琛丹低碳技术研究院有限公司 | The preparation method of High Efficiency Agent of Sludge Dehydration |
| CN109250883A (en) * | 2018-11-27 | 2019-01-22 | 内蒙古济世源环保生物科技有限公司 | Method for sludge treatment |
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Address after: Conghua Ao town Guangzhou city Guangdong province 510940 forward Road No. 3 building fourth room 363 self Patentee after: GUANGDONG YEANOVO ENVIRONMENTAL PROTECTION Co.,Ltd. Address before: Minle Conghua Ao town new road Guangzhou 510000 Guangdong province No. 38 Patentee before: GUANGZHOU YEANOVO ENVIRONMENTAL PROT Co.,Ltd. |
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| TR01 | Transfer of patent right |
Effective date of registration: 20220801 Address after: 510000 Room 606, No. 69, Xincheng Middle Road, JIEKOU street, Conghua District, Guangzhou, Guangdong Province Patentee after: Guangdong Shangchen Environmental Technology Co.,Ltd. Address before: Room 363, building 4, No.3 middle Qianjin Road, Aotou Town, Conghua, Guangzhou, Guangdong 510940 Patentee before: GUANGDONG YEANOVO ENVIRONMENTAL PROTECTION Co.,Ltd. |