CN102701550A - Sludge treatment method and treatment device thereof - Google Patents

Abstract

The invention relates to a sludge treatment method and a treatment device thereof. The sludge treatment method solves the technical shortcomings of the traditional sludge treatment method that the character of sludge is unchanged and land is difficult to use. The sludge treatment method comprises the following steps of: shearing and crushing sludge after dewatering the sludge, extruding and pelleting the sheared and crushed sludge, stirring an environmental mineral material and sludge particles to obtain a mixture. The treatment device comprises a spiral feed bin, a screw feeder, a comprehensive treatment kettle, a proportioning bin, a spiral discharging machine and a grinder; the spiral feed bin is provided with a spiral auger; the spiral feed bin is connected with the grinder which corresponds to the screw feeder; the screw feeder is connected with the top of the comprehensive treatment kettle; the comprehensive treatment kettle is divided into a squeezing cavity, a proportioning bin and an agitating cavity by pelleting plates with meshes; a squeezing and pelleting auger is arranged in the squeezing cavity; an agitating shaft with agitating blades is arranged in the agitating cavity; the proportioning bin is connected with a proportioning port of the comprehensive treatment kettle; and a discharging port of the comprehensive treatment kettle corresponds to a charging port of the spiral discharging machine. The sludge treatment method has the beneficial effects that the method is simple, the technological process is short, and the cost is low. The treatment device is compact, good in operational stability and reliability and pollution-free in the treating process.

Description

A kind of method for sludge treatment and treatment unit thereof

Technical field

The present invention relates to the sludge treatment category in environmental protection field, particularly a kind of method for sludge treatment and treatment unit thereof.

Technical background

Produce a large amount of mud in waste water that produces among the human lives and the various rubbish thereof; This mud has become the difficult problem of environment protection; How this mud of processing of science environmental protection makes it reduce pollution and the utilization of resources or the back to nature of environment, will become the technical problem that industry needs to be resolved hurrily.

In the prior art, be main employing to the processing of mud: landfill mud---be actually passively " escape " mud, waste resource, land occupation, and become source of pollution.Burning sludge---be extreme " elimination " mud in essence, eliminated non-renewable loam resource with expensive fuel energy, and secondary pollution; Mud is used for building materials filler, compost---and be unscientific passive " utilization " mud.

At present, the soil utilization of sludge resource also only is only limited to compost method, compares with sludge quantity, need treatment capacity, utilization ratio that China is huge, and the land resources utilization technology and equipment still has very large gap.And have that the treatment technology level is low, industrialization degree is not high, unstable product quality, the treatment time is long, landed property is many, treatment capacity is little and processing after product still to environment with make problem such as deposits yields harm.So sludge composting technology and product are difficult to the whole land resources utilizations of mud.Domestic and international at present still treatment technology, treatment unit and the final product of the whole soilization of no-trump mud.

Summary of the invention

Utilize nuisanceless, free of contamination mineral material; Mud is improved, made its performance complement, comprehensive, the mode collaborative with physics and chemistry, that organic-inorganic merges is handled mud; Environment mineral material and sludge resource fusion are used to improve the soil, make fertilizer, are origin of the present invention and purpose.

The present invention overcomes that prior art does not change the proterties of mud to the processing of mud and the technical deficiency can't the soil utilized; The present invention discloses a kind of method for sludge treatment and treatment unit thereof; Through processing and interpolation environment mineral material to mud; Because environment mineral material to the interaction between the mud, is realized the soil utilization of mud, reaches the recycle of environmental protection.

The goal of the invention of treatment process of the present invention is achieved in that this treatment process has following steps to realize:

⑴, mud is carried out processed, make in the mud water ratio less than 85%;

⑵, the mud after will dewatering are sheared pulverizing;

⑶, the mud that will shear after pulverizing carry out extruder grain, and the particle diameter of the mud behind the extruder grain is less than 8mm;

⑷, be environment mineral material less than 30% with water ratio; Crushing and screening particle diameter is less than 10mm; By weight, the mud granule 95-60% that 10-50% environment mineral material and step ⑶ obtain evenly stirs, and gets the mud and the environment mineral material mixture of soilization.

The goal of the invention of treatment unit of the present invention is achieved in that this treatment unit comprises: spiral feeding warehouse, screw feeder, comprehensive treating process still, batch bin; Spiral discharging machine and kibbler; Be provided with the band screw auger in the described spiral feeding warehouse; The outlet of spiral feeding warehouse is connected with the feeding mouth of kibbler, and the discharge port of kibbler is corresponding with the screw feeder feeding mouth, and the screw feeder discharge port is connected with the vertical feeding mouth of comprehensive treating process still.

Described comprehensive treating process still comprises: the marume plate of extruder grain auger, band mesh, the stir shaft of band agitating vane; The marume plate of band mesh is divided into extrusion chamber, batching chamber and stir chamber with the comprehensive treating process still; The extruder grain auger is arranged in the extrusion chamber; The stir shaft of band agitating vane is arranged in the stir chamber, and the sidewall in comprehensive treating process still batching chamber is provided with ingredients mouth, and the bottom of stir chamber is provided with comprehensive treating process still discharge port.

Described batch bin is connected with the ingredients mouth of comprehensive treating process still, and comprehensive treating process still discharge port is corresponding with the spiral discharging machine feeding mouth.

The invention has the beneficial effects as follows that treatment process is simple, technical process is short, and processing cost is low.The treatment unit compact construction, operation stability and good reliability, treating processes is pollution-free.

Describe the present invention below in conjunction with accompanying drawing.

Description of drawings

Accompanying drawing is a treatment unit structural representation of the present invention.

In the accompanying drawing, 1 spiral feeding warehouse, 1-1 screw auger; 2 screw feeders; 3 comprehensive treating process stills, 3-1 feeding mouth, 3-2 extruder grain auger, the marume plate of 3-3 band mesh; The stir shaft of 3-4 band agitating vane, 3-5 extrusion chamber, the 3-6 chamber of preparing burden, the 3-7 stir chamber; The 3-8 ingredients mouth, 3-9 comprehensive treating process still discharge port, 3-10 heating duct, 3-11 calorifier; 4 batch bins; 5 spiral discharging machines; 6 kibblers; 7 auxiliary material storehouses, 7-1 auxiliary material discharge port; 8 sterilization and deodorization batch cans, 8-1 sterilization and deodorization medicament mouth spray; 9 microwave generators; 10 additive storage bin; 11 sterilizing lamps; 12 discharge ports.

Embodiment

A kind of treatment process of mud, this treatment process have following steps to realize:

⑴, mud is carried out processed, make in the mud water ratio less than 85%;

⑵, the mud after will dewatering are sheared pulverizing;

⑶, the mud that will shear after pulverizing carry out extruder grain, and the particle diameter of the mud behind the extruder grain is less than 8mm:

, with water ratio less than 30% environment mineral material, crush and screen particle diameter less than 10mm, by weight, the mud granule 95-60% that 10-50% environment mineral material and step ⑶ obtain evenly stirs, the mud and the environment mineral material mixture of soilization.

The purpose that mud is sheared pulverization process is; Can particle pulverizing, liquid grain and cell wall breaking, molecular rupture, cut-out mycelia and macrofiber shape material in the mud be reduced the viscosity of mud, change mud colloid proterties structure; After shearing-crushing modification, homogenization treatment; Guarantee that treatment process such as downstream extruder grain is smooth, do not stop up, be beneficial to deodoring and disinfecting to handle, be beneficial to sludge modification and be beneficial to utilization.

The purpose of adding environment mineral material is that because environment mineral material has the purification function and the repairing effect of good chemically reactive, physical influence, biotic interactions, ion-exchange performance, strong absorption property, strong dispersing property (agglomeration resistance) and adjustment microenvironment, the viscosity that can improve mud is big, particle is thin; Density is little; Than great, characteristic, structures such as ventilation property difference, the ventilation property and the aquosity of raising mud; Make acid sludge become neutral mud; Also can play shock absorption, hinder the rapid variation of pH value, the nutritive ingredient in the mud is slowly discharged; Also can increase the content of the elements such as Mn, Cu, Zn of K in the mud, Mg, Ca, Fe and trace.Environment mineral material is free from environmental pollution; Also can improve the soil, make fertilizer with the mixture of mud; Have protect fertilizer, water conservation, water storage, loosely breathe freely, mineral manure and prevention is inorganic or multiple actions such as the migration of organic noxious pollutant, stable curing heavy metal, be beneficial to the soil utilization.

In the embodiment of the invention, among the step ⑷, environment mineral material and mud granule carry out in stirred vessel, feeding hot blast in the whipping process, and its mixture is carried out mummification and Pesticidal and sterilizing processing.

In the embodiment of the invention, use for making the mud as fertilizer sources after the processing, among the step ⑷, environment mineral material and mud granule carry out in the whipping process, and adding nutritive element, reodorant get soil and fertilizer.

In the embodiment of the invention; Environment mineral material described in the step ⑷ is the one or more combination in zeolite, sepiolite, wilkinite, zeyssatite, perlite, attapulgite, unslaked lime, kaolinite, smectite, illite, polygorskite, lightweight pearl opal, medical stone, pyrolusite, vermiculite etc., preferred zeolite, sepiolite, wilkinite, unslaked lime, zeyssatite or the vermiculite, all can realize goal of the invention.

In the embodiment of the invention, the environment mineral material described in the step ⑷ is that vermiculite is a most preferred embodiment.It is low that vermiculite has a cost, and resource extensively has the modification function to mud, and soil is had enhanced property.

A kind of treatment unit of mud; This treatment unit comprises: spiral feeding warehouse 1,screw feeder 2, comprehensive treating process still 3, batch bin 4;Spiral discharging machine 5 andkibbler 6 are provided with screw auger 1-1 in the described spiral feeding warehouse 1, and 1 outlet of spiral feeding warehouse is connected with the feeding mouth ofkibbler 6; The discharge port ofkibbler 6 is corresponding withscrew feeder 2 feeding mouths, andscrew feeder 2 discharge ports are connected with comprehensive treating process still 3 vertical feeding mouth 3-1.

Described comprehensive treating process still 3 comprises: the marume plate 3-3 of feeding mouth 3-1, extruder grain auger 3-2, band mesh, the stir shaft 3-4 of band agitating vane; The marume plate 3-3 of band mesh is divided into extrusion chamber 3-5, batching chamber 3-6 and stir chamber 3-7 with comprehensive treating process still 3; Extruder grain auger 3-2 is arranged in the extrusion chamber 3-5; The stir shaft 3-4 of band agitating vane is arranged in the stir chamber 3-7; The sidewall of comprehensive treating process still 3 batching chamber 3-6 is provided with ingredients mouth 3-8, and the bottom of stir chamber 3-7 is provided with comprehensive treating process warehouse discharging mouth 3-9.

Described batch bin 4 is connected with the ingredients mouth 3-8 of comprehensive treating process still 3, and comprehensive treating process still discharge port 3-9 is corresponding withspiral discharging machine 5 feeding mouths.

During use, the mud after the processed gets into spiral feeding warehouse 1, under the screw auger effect; Get intokibbler 6 and shear and pulverize, shear and send intoscrew feeder 2 after pulverizing,screw feeder 2 will be sheared the extrusion chamber 3-5 that mud after the pulverizing is sent into comprehensive treating process still 3; Mud forms strip behind the mesh of mud through the marume plate 3-3 of band mesh, because sludge intensity difference and gravity under screw extrusion auger 3-2 effect; Strip mud breaks to form particulate state, falls into batching chamber 3-6, and the environment mineral material in the batch bin 4 sprays into batching chamber 3-6 to be mixed with mud granule; Under stir shaft 3-4 effect, stir and be mixed, stir and send intospiral discharging machine 5 outputs after being mixed.

In the embodiment of the invention; For mud being added auxiliary material and sterilization and deodorization; Describedscrew feeder 2 is hollow ribbon auger structure for conveying withspiral discharging machine 5, along on the axis ofscrew feeder 2, is provided with auxiliary material storehouse 7 and sterilization and deodorization batch can 8; The auxiliary material discharge port 7-1 of 7 bottoms, auxiliary material storehouse is corresponding with the ribbon auger ofscrew feeder 2, and the sterilization and deodorization medicament mouth spray 8-1 of sterilization and deodorization batch can 8 bottoms is corresponding with the ribbon auger of screw feeder 2.Auxiliary material storehouse 7 directly joins in the mud in thescrew feeder 2 with sterilization and deodorization batch can 8 interior auxiliary material and sterilization and deodorization medicaments.

In the embodiment of the invention, for mud is implemented mummification, described comprehensive treating process still 3 is provided with heating duct 3-10 on the sidewall of stir chamber 3-7, have heating duct 3-10 to be communicated with stir chamber 3-7, and heating duct 3-10 one end is connected with calorifier 3-11.Calorifier 3-11 carries out drying and other treatment to comprehensive treating process still 3 blowing hot-airs to the mixture in the comprehensive treating process still 3 through heating duct 3-10, and the Pesticidal and sterilizing synergy is arranged.

In the embodiment of the invention; For mud being implemented nutritive element additive, further mummification and sterilization; Along on the axis ofspiral discharging machine 5, be provided withmicrowave generator 9,additive storage bin 10 and sterilizing lamp 11, the ribbon auger withspiral discharging machine 5 is corresponding respectively with sterilizing lamp 11 formicrowave generator 9; The additive discharge port ofadditive storage bin 10 is corresponding with the ribbon auger ofspiral discharging machine 5, and 12 is discharge port.

Claims (9)

1. the treatment process of a mud, it is characterized in that: this treatment process realizes according to the following steps:

⑴, mud is carried out processed, make in the mud water ratio less than 85%;

⑵, the mud after will dewatering are sheared pulverizing;

⑶, the mud that will shear after pulverizing carry out extruder grain, and the mud particle diameter behind the extruder grain is less than 8mm;

⑷, be environment mineral material less than 30% with water ratio; Crush and screen particle diameter less than 10mm; By weight, the 95-60% mud granule that 10-50% environment mineral material and step ⑶ are obtained evenly stirs, the mud and the environment mineral material mixture of soilization.

2. the treatment process of a kind of mud according to claim 1, it is characterized in that: among the step ⑷, environment mineral material and mud granule carry out in stirred vessel, feeding hot blast in the whipping process, and its mixture is carried out mummification and Pesticidal and sterilizing is handled.

3. the treatment process of a kind of mud according to claim 1 and 2, it is characterized in that: among the step ⑷, environment mineral material and mud granule carry out in the whipping process, add nutritive element, reodorant gets soil and fertilizer.

4. the treatment process of a kind of mud according to claim 1 and 2, it is characterized in that: the environment mineral material described in the step ⑷ is the one or more combination in zeolite, sepiolite, wilkinite, zeyssatite, attapulgite, unslaked lime, kaolinite, smectite, illite, polygorskite, lightweight pearl opal, medical stone, pyrolusite, vermiculite etc., preferred zeolite, sepiolite, wilkinite, unslaked lime, zeyssatite or the vermiculite.

5. the treatment process of a kind of mud according to claim 1 and 2, it is characterized in that: the environment mineral material described in the step ⑷ is vermiculite, unslaked lime.

6. the treatment unit of a mud; It is characterized in that: this treatment unit comprises: spiral feeding warehouse (1), screw feeder (2), comprehensive treating process still (3), batch bin (4); Spiral discharging machine (5) and kibbler (6); Be provided with screw auger (1-1) in the described spiral feeding warehouse (1); Spiral feeding warehouse (1) outlet is connected with the feeding mouth of kibbler (6), and the discharge port of kibbler (6) is corresponding with screw feeder (2) feeding mouth, and screw feeder (2) discharge port is connected with the vertical feeding mouth of comprehensive treating process still (3) (3-1):

Described comprehensive treating process still (3) comprising: the marume plate (3-3) of feeding mouth (3-1), extruder grain auger (3-2), band mesh, the stir shaft (3-4) of band agitating vane; The marume plate (3-3) of band mesh is divided into extrusion chamber (3-5), batching chamber (3-6) and stir chamber (3-7) with comprehensive treating process still (3); Extruder grain auger (3-2) is arranged in the extrusion chamber (3-5); The stir shaft (3-4) of band agitating vane is arranged in the stir chamber (3-7); The sidewall in comprehensive treating process still (3) batching chamber (3-6) is provided with ingredients mouth (3-8), and the bottom of stir chamber (3-7) is provided with comprehensive treating process still discharge port (3-9);

Described batch bin (4) is connected with the ingredients mouth (3-8) of comprehensive treating process still (3), and comprehensive treating process still discharge port (3-9) is corresponding with spiral discharging machine (5) feeding mouth.

7. the treatment unit of a kind of mud according to claim 6; It is characterized in that: described screw feeder (2) and spiral discharging machine (5) are hollow ribbon auger structure for conveying; Along on the axis of screw feeder (2); Be provided with auxiliary material storehouse (7) and sterilization and deodorization batch can (8); The auxiliary material discharge port (7-1) of bottom, auxiliary material storehouse (7) is corresponding with the ribbon auger of screw feeder (2), and the sterilization and deodorization medicament mouth spray (8-1) of sterilization and deodorization batch can (8) bottom is corresponding with the ribbon auger of screw feeder (2).

8. according to the treatment unit of claim 6 or 7 described a kind of mud; It is characterized in that: along on the axis of spiral discharging machine (5); Be provided with microwave generator (9), additive storage bin (10), sterilizing lamp (11) and discharge port (12); Microwave generator (9), sterilizing lamp (11) the ribbon auger with spiral discharging machine (5) respectively are corresponding, and the additive discharge port of additive storage bin (10) is corresponding with the ribbon auger of spiral discharging machine (5).

9. according to the treatment unit of claim 6 or 7 described a kind of mud; It is characterized in that: described comprehensive treating process still (3) is on the sidewall of stir chamber (3-7); Be provided with heating duct (3-10); Heating duct (3-10) is communicated with stir chamber (3-7), and heating duct (3-10) end is connected with calorifier (3-11).

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