CN201857329U - Sludge desander for treating biological sludge - Google Patents
Sludge desander for treating biological sludge Download PDFInfo
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- CN201857329U CN201857329U CN2010205628777U CN201020562877U CN201857329U CN 201857329 U CN201857329 U CN 201857329U CN 2010205628777 U CN2010205628777 U CN 2010205628777U CN 201020562877 U CN201020562877 U CN 201020562877U CN 201857329 U CN201857329 U CN 201857329U
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Abstract
The utility model relates to a sludge treating device, in particular to a sludge desander in the technology of biological sludge solidification treatment. The sludge desander for treating biological sludge is characterized in that the center of a cylindrical shell (4) is provided with a coaxial filter screening drum (3) the periphery of which is provided with a rotatable sand scraper (5); the center of an upper crown sheet of the shell (4) is provided with a discharge opening (2) the diameter of which is lower than or equal to that of the filter screening drum (3); the sidewall of the shell (4) is provided with a feed opening (1); and an opening of the sand scraper (5) faces upwards so as to form a goblet shape, a circle of nearby scraping plates (5a) are clamped and fixed on supporting ribs (5b), the inner side edges of the scraping plates (5a) are matched with the outer wall of the filter screening drum (3), the lower ends of the supporting ribs (5b) are fixed on a rotary disc (5c) under which a stirring shaft (5d) is arranged, and the stirring shaft (5d) is driven by a motor (7) under the shell (4) through a speed reducer (8). The utility model provides the proper and effective device so as to meet the operational requirements of the process flow of biological sludge solidification.
Description
Technical field
The utility model is a kind of device of sludge treatment, specifically relates to the mud desanding device in the biological sludge solidification technology.
Background technology
Mud is the inevitable outcome of sewage disposal, and along with quickening of urbanization process, treatment rate of domestic sewage improves year by year, and the municipal sludge amount sharply increases.By in October, 2009,1817 of the sewage works that has built up are about 2000 in the sewage work that builds.By 2010, National urban sewage disposal total scale will reach 1 * 10
8m
3/ d, sludge quantity will reach 5 * 10
4T/d.After appropriately the mud of treatment and disposal enters environment, bring secondary pollution directly for water body and atmosphere.
Mud mainly shows the harm of environment:
Water ratio height (generally 75%～90%), easy corrupt, foul smelling contain heavy metal and toxic chemical substance and pathogenic micro-organism etc. " three cause " organic pollutant.
Simple landfill of mud or air storage very easily cause secondary pollution;
At illumination and wind and weather, can produce high temperature or other chemical reactions, can kill soil microorganisms, destroy Soil structure, make soil forfeiture decomposition ability;
Organism in the mud can discharge obnoxious flavour, dust after by microbiological degradation, increase the weight of topsoil, the much higher pathogenic bacteria (mainly containing intestinal bacteria, helminthism worm and viral three major types) of quantity all is bonded on the mud granule thing in the ratio sewage, very easily brings in the middle of the air.
More seriously, exceed standard, also can pass through food chains such as fish, shrimp, come back on " dining table ", greatly endanger people's health as heavy metal contained in the mud (lead, cadmium, mercury etc.).
Therefore, the mud of Sewage Plant causes serious pollution to environment, and the sludge disposal problem has been a serious environmental problem of being badly in need of solution, does not in fact handle the mud of Sewage Plant well, does not just really handle sewage well.But, be subjected to municipal sewage treatment to build the restriction of developmental level and awareness, China does not cause enough attention all the time to the treatment and disposal of mud, the processing of municipal sludge and disposal are the weak links of restriction wastewater treatment in China industry healthy development always, searching is fit to China's national situation, cost-effective sewage plant sludge disposal technology has been the task of top priority of pendulum in face of us.
Mud (sludge) is the solid precipitation material that is produced by water and sewage treatment process.
Finally be pooled to concentration basin after the sewage disposal of all kinds of sewage works, be thickened sludge, water ratio is at 95-99%, and after pre-treatment (dosing, mechanical dehydration), according to pretreating effect, water ratio is generally between 75-90%.High-moisture percentage is the topmost characteristics of sewage plant sludge as a kind of pollutent that gives up admittedly, just because of the existence of large quantity of moisture, makes mud have more serious hazardness than other forms of solid refuse.Therefore, the high-moisture percentage of mud is the topmost technical barrier that runs in whole sludge stabilizing, minimizing, the harmlessness disposing.
At present, the common disposal technology of mud comprises: the soil utilization of mud landfill, mud, sludge incineration, and present sewage work more than 90% adopts with the domestic refuse landfill mud.
The pros and cons of various processing mud methods are as follows:
Landfill is simple to operate, but the land occupation area is bigger, and secondary pollution difficulty is avoided.
The soil utilizes and recyclablely utilizes advantages such as nutrients of nitrogen in the mud, phosphorus, potassium, but has the danger of pathogenic bacteria diffusion and heavy metal contamination.
The innoxious burning method is paid attention to by more and more developed countries, it is a kind of mud treatment process the most completely, compare with landfill etc. with compost, sludge incineration has the appearance of subtracting, decrement and advantage such as innoxious, and municipal sludge minimizing after burning is fairly obvious, subtracts capacity more than 90%, can save a large amount of landfill lands used, the content that mud burns objectionable constituent in the excess is extremely low, and lime-ash can fully utilize, if also do not influence landfill yard environment on every side to burning the surplus landfill disposal of carrying out; Can reclaim the heat that sludge incineration produces, be used for generating, heat supply etc., resource is fully used.
Wherein the burning mode of mud is divided into direct burning and burns indirectly:
Directly burn: the dewatered sludge of high-moisture percentage directly being burned, because its calorific value is lower, keep difficulty of self ratio of combustion, need mix a large amount of primary energy source, come stable burning, is a kind of disposal options of high energy consumption, does not meet national industrial policies.
Gu anhydration and incineration: be that the mud behind the mechanical dehydration is carried out drying treatment earlier, reduce its water ratio, improve firing efficiency, make incinerator in operational process, reduce the consumption of primary energy source as far as possible.
Add the thermosetting anhydration and incineration: the mode that adopts heating is to the mud solid mummification that dewaters, and is characterized in the mud rate height that anhydrates, and can reach below 40%, but can produce a large amount of foul waste gas, produces secondary pollution, consumes a certain amount of primary energy source.
The solid anhydration and incineration of strand mill: adopt machinery strand mill mode to the mud solid mummification that dewaters, be characterized in that mud anhydrates and be not very high, can reach 60%～70%, investment and running cost are low, do not produce secondary pollution.
The inventor sums up above-mentioned experience, a cover biological sludge curing process flow process is developed in processing at biological sludge, concrete technical process is as follows: biological sludge---the city mud (moisture about 80%) that wets is sent into gravel filter by the mud transfer roller, strainer adopts the 0.5mm filter screen, a spot of gravel in the elimination mud, be provided with automatic fettling installation and back-purge system in the strainer, mud enters the strand grinding machine after removing sandstone, under powerful shearing force, make the mud cell wall rupture, impel the capillary combination water of mud group, the water of planar water and cell interior breaks away from the protection of charge effect and cell walls, becomes free-water; Strand mill back mud enters temporary jar, for preventing precipitation, tank body is provided with agitator, temporary jar of outlet connects the mud transfer roller, the mud transfer roller is isolated mud and water with the mud Plate Filtration, and mud enters screw mixer to be mixed with solidifying agent, further dehydration, make sludge curing, the sewage of telling enters sewage lagoon; Mud after the curing can be further dry, selects different final processing mode-landfills, soil utilization, innoxious burning according to the mud component difference.
Described biological sludge solidification technology mainly is made up of four parts, mud desanding, mud strand mill, sludge filtration dehydration and sludge curing, general equal energy adopts existing treatment facility in these four processes, and crucial sand removing process using does not still have suitable, effective device at present, with the operation of the whole flow process of influence restriction.
Summary of the invention
The purpose of this utility model intends providing a kind of mud sand removing machine of biological sludge processing, and to satisfy the needs of biological sludge curing process flow process, the purpose of this utility model so realizes.
The mud sand removing machine that a kind of biological sludge is handled is characterized in that:
Filtering net cylinder at columnar housing central configuration concentric;
At the rotary device of strike-ofing of the periphery of filtering net cylinder configuration;
The upper plate central authorities of housing offer discharge port, the diameter of discharge port less than, equal the filtering net cylinder diameter;
On the sidewall of housing, offer opening for feed;
The described device of strike-ofing is the goblet shape that opening makes progress, the scraper plate that makes a circle in week is clamped and fixed on the support muscle, the outer wall of the inner side edge applying filtering net cylinder of scraper plate, and the lower end of support muscle is fixed on the rolling disc, the bottom of rolling disc has stir shaft, stir shaft by the motor of lower housing portion through the step-down gear transmission.
Further, the filter screen on the described filtering net cylinder is 5-30 orders.
Further, described scraper plate is the rubber plate material.
Further, the diameter of described housing is 0.3-1 meter, highly is 0.6-1.5 meters.
Adopt the technical program, liferaft cloth to be tested is placed between upper and lower two ring flanges of horizontal arrangement on the test board, by the bolt clamping of ring flange periphery.
This technical process is compared with other sludge treatment disposal technologies, and technological process is transparent, advanced technology, running cost is low, is 80% mud with 100 tons of/day water ratio, and mud is handled 60% from 80%, cost with about 50 yuan per ton the Sewage Plant of suitable different treatment amount, flexible configuration.A complete set of equipment technology, in 100 tons/day engineering, investment cost is at 0.8～1.2 ten thousand yuan/ton, and under the prerequisite that guarantees environmental benefit and social benefit, investment subject has suitable economic benefit.
What whole process adopted is mechanical transport and strand mill, does not have the heat exchange operation, can not produce conglomeration and caking phenomenon; Under normal temperature condition, work, not output foul gas and explosive waste gas danger; Because of product contains certain moisture, can not produce airborne dust and dust pollution; Adopt Seal Design to discard and be collected processing easily; Investment and running cost are low, do not produce secondary pollution; The mud device can adopt the microcomputer automated operation, reduces a staff.
Advantage of the present utility model and beneficial effect; the mud sand removing machine that this biological sludge is handled; operation in housing airborne dust and dust pollution, compact construction can not occur; sand dust is filtered the net tube and filters; and appearance has the action of scraper plate scraping, can guarantee smooth filtering process and high filtration efficiency, and equipment is had better protecting, maintainability; prolong service life of structure, make that also whole biological sludge treatment scheme is moved.
Description of drawings
Fig. 1 is a kind of embodiment of the mud sand removing machine of the utility model biological sludge processing, the structural representation of configured in one piece;
Fig. 2 is the strike-off structural representation of device parts of the utility model;
Fig. 3 is the vertical view of Fig. 1;
Fig. 4 is the vertical view of Fig. 2;
Fig. 5 is a biological sludge curing process flow sheet equipment configuration schematic diagram.
Among the figure, the 1st, opening for feed, the 2nd, discharge port, the 3rd, filtering net cylinder, the 4th, housing, the 5th, the device of strike-ofing, 5a are that scraper plate, 5b are that support muscle, 5c are that rolling disc, 5d are stir shafts, the 6th, sand export, the 7th, motor, the 8th, step-down gear, the 9th, support.
Embodiment
Further describe structure of the present utility model below in conjunction with accompanying drawing.
The mud sand removing machine that a kind of biological sludge is handled is at the filtering net cylinder 3 of columnar housing 4 central configuration concentrics; At the rotary device 5 of strike-ofing of the periphery of filtering net cylinder 3 configuration; The upper plate central authorities of housing 4 offer discharge port 2, the diameter of discharge port 2 less than, equal filtering net cylinder 3 diameters; On the sidewall of housing 4, offer opening for feed 1; The described device 5 of strike-ofing is the goblet shape that opening makes progress, the scraper plate 5a that makes a circle in week is clamped and fixed on the support muscle 5b, the outer wall of the inner side edge applying filtering net cylinder 3 of scraper plate 5a, the lower end of support muscle 5b is fixed on the rolling disc 5c, the bottom of rolling disc 5c has stir shaft 5d, stir shaft 5d by the motor 7 of housing 2 bottoms through step-down gear 8 transmissions.
Filter screen on the described filtering net cylinder 3 is 5-30 orders.In this scope, can guarantee better filter effect, qualified filtration requirement.
Described scraper plate 5a is the rubber plate material.So material can the scraping silt particle, does not damage filtering net cylinder 3 again.
The diameter of described housing 4 is 0.3-1 meter, highly is 0.6-1.5 meters.Adopt the housing 4 of scope specification like this during general operation is handled, can satisfy the operation needs.
Claims (4)
1. the mud sand removing machine handled of a biological sludge is characterized in that:
Filtering net cylinder (3) at columnar housing (4) central configuration concentric;
At the periphery of filtering net cylinder (3) the configuration rotary device of strike-ofing (5);
The upper plate central authorities of housing (4) offer discharge port (2), the diameter of discharge port (2) less than, equal filtering net cylinder (3) diameter;
On the sidewall of housing (4), offer opening for feed (1);
The described device of strike-ofing (5) is the goblet shape that opening makes progress, the scraper plate (5a) that makes a circle in week is clamped and fixed on the support muscle (5b), the outer wall of the inner side edge applying filtering net cylinder (3) of scraper plate (5a), the lower end of support muscle (5b) is fixed on the rolling disc (5c), the bottom of rolling disc (5c) has stir shaft (5d), stir shaft (5d) by the motor (7) of housing (2) bottom through step-down gear (8) transmission.
2. the mud sand removing machine of handling according to the described biological sludge of claim 1 is characterized in that the filter screen on the described filtering net cylinder (3) is 5-30 orders.
3. the mud sand removing machine of handling according to the described biological sludge of claim 1 is characterized in that described scraper plate (5a) is the rubber plate material.
4. the mud sand removing machine of handling according to the described biological sludge of claim 1 is characterized in that the diameter of described housing (4) is 0.3-1 meter, highly is 0.6-1.5 meters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205628777U CN201857329U (en) | 2010-10-15 | 2010-10-15 | Sludge desander for treating biological sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205628777U CN201857329U (en) | 2010-10-15 | 2010-10-15 | Sludge desander for treating biological sludge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201857329U true CN201857329U (en) | 2011-06-08 |
Family
ID=44103142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205628777U Expired - Fee Related CN201857329U (en) | 2010-10-15 | 2010-10-15 | Sludge desander for treating biological sludge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201857329U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103223277A (en) * | 2012-05-21 | 2013-07-31 | 中国石油天然气股份有限公司 | Multiphase shock excitation sand remover and sand removing method of sand-containing fluid |
| CN105948430A (en) * | 2016-06-13 | 2016-09-21 | 普利资环境科技（苏州）有限公司 | Sludge smashing and conveying device for sludge treatment |
-
2010
- 2010-10-15 CN CN2010205628777U patent/CN201857329U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103223277A (en) * | 2012-05-21 | 2013-07-31 | 中国石油天然气股份有限公司 | Multiphase shock excitation sand remover and sand removing method of sand-containing fluid |
| CN105948430A (en) * | 2016-06-13 | 2016-09-21 | 普利资环境科技（苏州）有限公司 | Sludge smashing and conveying device for sludge treatment |
| CN105948430B (en) * | 2016-06-13 | 2018-10-12 | 普利资环境科技（苏州）有限公司 | A kind of sludge for Treatment of Sludge crushes transmitting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110608 Termination date: 20121015 |