CN103288324B - Method and device for in-situ solid-liquid separation of dredged muddy water - Google Patents

Method and device for in-situ solid-liquid separation of dredged muddy water Download PDF

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Publication number
CN103288324B
CN103288324B CN201310203880.8A CN201310203880A CN103288324B CN 103288324 B CN103288324 B CN 103288324B CN 201310203880 A CN201310203880 A CN 201310203880A CN 103288324 B CN103288324 B CN 103288324B
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muddy water
dredging
cylinder
hydrocyclone
granulation
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CN103288324A (en
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蒋昌波
聂小保
孙士权
谭万春
常留红
陈杰
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Changsha University of Science and Technology
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Changsha University of Science and Technology
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Abstract

The invention relates to a method and a device for the solid-liquid separation of dredged muddy water, and in particular relates to a method and a device for the in-situ solid-liquid separation of the dredged muddy water. By taking hydraulic cyclone granulation concentration and belt type pressing filtration as a core, quick reaction between a coagulation drug and the dredged muddy water is realized through hydraulic cyclone; muddy water concentration and dehydration pretreatment are synchronously completed in a hydraulic cyclone granulation device; through the hydraulic cyclone granulation device, a muddy water inlet (4) is formed in the bottom of an inner cylinder, so that unit processes such as muddy water inlet, granule destabilization, granulation, mud and water separation, concentration and mud discharge are sequentially carried out along the motion direction of solid granules, are compact and independent of one another, and cannot be mutually influenced, and the device can continuously operate; concentrated mud slag obtained by the hydraulic cyclone granulation device is directly subjected to belt type pressing filtration and dehydration, so that the instant and efficient solid-liquid separation of the dredged muddy water on a dredging ship is realized. In a word, the method and the device have the advantages of low energy consumption, high efficiency, continuous stabilization, easiness in operation, convenience in implementation and the like.

Description

A kind of method and device of dredging muddy water original position solid-liquid separation
Technical field
The present invention relates to a kind of method and device of dredging muddy water solid-liquid separation, particularly a kind of method and device of dredging muddy water original position solid-liquid separation.
For the dredging muddy water that Dredging Process is produced, carry out thickening, avoid dredging the pollution of muddy water to dredging water body, relate in particular to and take the solid-liquid separating method that hydrocyclone granulation is concentrated and belt press filtration is core, be particularly suitable for the solid-liquid separation of the dredging muddy water that produces in the activities such as channel maintenance, port construction and environmental dredging.
Background technology
In the activities such as channel maintenance, port construction and environmental dredging, will produce a large amount of dredging muddy water, dredging muddy water is dealt carefully with disposal as can not get, and will dredging water body be produced to serious secondary pollution.Pollutent in dredging muddy water, according to occurrence patterns, can be divided into 2 classes, and a class is that solubilised state is dissolved in the water, and another kind of is suspended solid and the pollutent that is adsorbed in suspended solid surface.To the former, need carry out a biological disposal upon, if will realize thorough purifying treatment, be equal to newly-built Yi Zuo sewage work, and after dredging finishes, purification process equipment is idle, not feasible, native land is inside and outside does not do requirement substantially to the discharge of dissolved pollutant; To the latter, only need carry out solid-liquid separation gets final product achieve effective control.The current related specifications of processing disposal both at home and abroad about dredging muddy water, the overwhelming majority is for suspended solid and is adsorbed in its surperficial pollutent proposition.As can be seen here, solid-liquid separation effect, is the key point of the processing disposal of dredging muddy water efficiently.
The solid-liquid separation of dredging muddy water can immediately be carried out on dredging vessel, also can deliver to processing place, land and carries out through blowing or refuting; Can be mainly that mechanical thickening and natural mummification are fixed for the technical scheme adopting.On dredging vessel, often adopt at present both at home and abroad mechanical thickening to carry out instant solid-liquid separation, land processes that to take natural mummification fixed as main.Because dredging muddy water has that yield in unit time is large, water ratio is high and the notable feature such as solid particulate is in small, broken bits, existing solid-liquid separation technique equipment all has some limitations.Machinery thickening, because concentration technology processing load is lower, generally can only be reduced to mud moisture content 95% left and right, and under this water ratio, the sludge volume after concentrating is large, the large-scale dewatering machine equipment of follow-up needs, and cost is very high, and floor space is large.Although extend mud concentration time to more than 8h, contribute to reduce the water ratio of thickened sludge, dredging plant dredging amount per hour is generally all more than thousands of sides, even if scale is protected dredging compared with circlet, also at 1000m 3/ h left and right, now the volume of concentration technology unit approaches 10000 sides, and this has greatly increased the ineffective power consumption of dredging vessel undoubtedly, has increased dredging cost.Although required drive equipment is less in the fixed solid-liquid separation process of nature mummification, but blow or lighter owing to whole dredging muddy water need to being grown to distance, energy consumption is higher, also have that drying bed floor space is large simultaneously, during mummification fixed long and produce the problems such as stink.For addressing the above problem, the dehydration of geotechnological stringing bag, the stockyard vacuum technology such as draw water is also just being applied gradually, but because dredging muddy water solid particulate is in small, broken bits, crosses aquaporin tiny in mud, also has problems such as stopping up pipe bag, impeded drainage.In a word, up to now not yet relevant for the efficient low-consume solid-liquid separation technique method of dredging muddy water.
For improving coagulation, precipitation and the concentrated performance of muddy water, often adopt granulation in water, these 2 kinds of technology of hydrocyclone granulation both at home and abroad.In water, granulation can synchronously complete coagulation, the precipitation and concentrated of muddy water in a device, realizes solid-liquid.The realization of this technology depends on the control of mechanical stirring process, therefore need to consume certain energy, and exists mechanical component to be easy to the problem of wearing and tearing.Hydrocyclone granulation is by controlling the flow direction of muddy water access to plant, manufactures eddy flow to improve the probability of collision of particulate matter in the dispersion effect of water purification medicament in muddy water and increase muddy water, thereby reaches the effect of coagulation assisted.But hydrocyclone granulation process is the coagulation process of mud, not mud concentrates and solid-liquid separation process, self does not have solid-liquid separation effect, muddy water through hydrocyclone reaction, mud moisture content can't change, still need further precipitate and concentrate, could realize real solid-liquid separation.
Chinese patent (publication number CN102078708A, Zhang Jianfeng etc.) discloses " a kind of hydrocyclone granulation water treatment equipment for separating liquid from solid ".This device relies on hydrocyclone effect to carry out suspended solid fine particles granulation growth in water, finally realizes high efficient solid and liquid separation.Device can effectively improve particle diameter and the degree of compactness of flocs unit, and reduction sedimentation time, raising spoil disposal water solid content, reduce spoil disposal water consumption.This device is located at water-in at the middle part of central tube short transverse, has 2 settling regions (being solid-liquid displacement zone): the one, be positioned at the settling region of central tube bottom, and rely on gravity to carry out sedimentation; The one, be positioned at the settling region of central tube outside, carry out tube settling.2 settling regions are equipped with separately independently sludge drainage system.Owing to being provided with 2 covers, independently precipitate and sludge drainage system, make whole apparatus system comparatively complicated.In addition,, because top, central tube settling region is water-in, bottom is mud discharging mouth, in spoil disposal process, will have short flow phenomenon, the not processed settling region that directly passes that intakes is discharged, thereby for ensureing operating performance, during this device spoil disposal, need out of servicely, cannot realize non-stop run.
Up to now, there is not yet hydrocyclone prilling granulator combines with mechanical dewatering equipment and processes the relevant report of dredging muddy water.
Summary of the invention
The object of the invention is for the deficiencies in the prior art, method and the device of a kind of efficient, low consumption, continuous dredging muddy water original position solid-liquid separation is provided.
A kind of method of dredging muddy water original position solid-liquid separation of the present invention, its embodiment is: hydrocyclone prilling granulator and pressure filter are set on dredging vessel, described pressure filter is directly connected with hydrocyclone prilling granulator, the dredging muddy water of dredging vessel suction is adjusted and is added after coagulated agent in pipeline static mixer, entering hydrocyclone prilling granulator, to carry out granulation concentrated, and the concentrated body refuse obtaining after concentrated directly enters pressure filter and dewaters.
A kind of method of dredging muddy water original position solid-liquid separation of the present invention, utilize dredge pump (I) the suction dredging muddy water arranging on dredging vessel, first dredging muddy water complete and the mixing of coagulated agent in pipeline static mixer (2), and delivering to afterwards hydrocyclone prilling granulator, to carry out granulation concentrated; Obtain clear water and concentrated body refuse, clear water directly enters water body, concentrated body refuse directly enters belt filter press (IV) and carries out filter-press dehydration, and the mud cake after dehydration is delivered to disposal by land, and the drainage obtaining after press filtration is sent into coagulating agent mixing throwing device (VIII) configuration coagulating agent;
Described hydrocyclone prilling granulator is comprised of inner cylinder (5) and out cylinder (6), pipeline static mixer one end is connected with the outlet of dredge pump (I), the other end is connected with the muddy water import (4) of hydrocyclone prilling granulator, after dredging muddy water mixes with coagulated agent in pipeline static mixer (2), by muddy water import (4), along the tangential direction of hydrocyclone prilling granulator inner cylinder (5), enter inner core (5), and rotation rises to inner core (5) and enters afterwards at the middle and upper levels urceolus (6); Complete the concentrated granulation of dredging muddy water; Body refuse after concentrated directly pumps into belt filter press (IV) by slush pump (III) and dewaters.
A kind of method of dredging muddy water original position solid-liquid separation of the present invention, the concentrated required drive of dredging muddy water granulation is provided by the dredge pump on dredging vessel (I).
A kind of method of dredging muddy water original position solid-liquid separation of the present invention, described coagulated agent comprises coagulating agent and coagulant aids; Described coagulating agent is selected from least one in poly-ferric chloride, ferric sulfate, polymerize aluminum chloride etc., and coagulant aids is selected from least one in anionic PAM, cationic PAM, non-ionic type PAM etc.
A kind of device of dredging muddy water original position solid-liquid separation of the present invention, comprises hydrocyclone prilling granulator, slush pump (III), pressure filter; It is characterized in that: described hydrocyclone prilling granulator is comprised of inner cylinder (5), out cylinder (6), muddy water import (4), delivery pipe (8), shore pipe (9), rib (7); Described inner core is fixing by rib (7) support being fixed on outer tube inner wall, and inner core (5) bottom is provided with muddy water import (4); On urceolus (6) top, be provided with delivery pipe (8), bottom is provided with shore pipe (9); Described shore pipe (9), slush pump (III), pressure filter connect successively by pipeline.
A kind of device of dredging muddy water original position solid-liquid separation of the present invention, muddy water import (4) is connected with reducing (3), static mixer (2), dredge pump sludge out pipe (1) successively by dredging tube.
A kind of device of dredging muddy water original position solid-liquid separation of the present invention, inner/outer tube diameter is than being 0.6-0.8, aspect ratio is 0.5-0.7; Described inner core is from up to down divided into hydrocyclone granulation zone (B) and hydrocyclone reaction zone (A) successively, and hydrocyclone reaction zone (A) bottom is provided with muddy water import (4); Described urceolus is from up to down divided into clear water zone (E), mud-water separation district (C) and enrichment region (D) successively; Bottom, described enrichment region (D) is provided with shore pipe (9), by slush pump (I), is directly connected with belt filter press (IV); Described enrichment region (D) is turbination, and its inclination angle is 25-35 °; Water-in (4) is determined by the working load of dredge pump with the diameter of shore pipe (9).
Mechanism of the present invention sketch under:
A kind of method of dredging muddy water original position solid-liquid separation of the present invention, by the dredging muddy water of dredge pump (I) suction, first in pipeline static mixer (2), completed and the mixing of coagulated agent, for increasing the inner waterpower stable condition of hydrocyclone prilling granulator, further strengthen the mixed effect of muddy water and coagulating agent simultaneously, reducing (3) is set after dredge pump sludge out pipe static mixer and reduces muddy water flow velocity; Dredging muddy water after reduction of speed is delivered to the muddy water import (4) of hydrocyclone prilling granulator inner core bottom, and enters inner core cyclone reaction district (A) along device inner core tangential direction, and rotation rises to inner core at the middle and upper levels; In muddy water rotation uphill process, solid suspended particle occurs de-steady, de-steady particle constantly collides and condenses and gradually grow up, flocculation grain diameter increases gradually, when the self gravitation of flocs unit and the jacking force balance of upflow velocity, in device inner core middle and upper part, form stable suspension slime layer, i.e. eddy flow granulation zone (B); The follow-up de-steady solid particulate that enters suspension slime layer, under friction and Extrusion combined action between upflow velocity and suspension slime layer endoparticle, realizes self-granulation, generates the compact spheroidal particle that granularity is large, density is high, settling property is good; Newly-generated slime layer is under upflow velocity effect, enter urceolus mud-water separation district (C), increase due to urceolus flow area, upflow velocity reduces, compact spheroidal particle is lowered into enrichment region (D) in action of gravity, and in enrichment region, realize efficient quick concentrating, clear water enters clear water zone (E), and enters water body by delivery pipe (8).Because enrichment region (D) body refuse grain diameter is large, compactness good, concentrated rear moisture percentage in sewage sludge is lower, concentrates with dehydration pre-treatment and obtains synchronizeing realizing; Concentrated rear body refuse directly pumps into belt filter press (IV) by slush pump (III) and dewaters.After dehydration, mud cake is refuted and is delivered to disposal by land, and after filter, water is sent into coagulating agent mixing throwing device (VIII) configuration coagulating agent.
Advantage of the present invention and beneficial effect
1, utilize dredging vessel dredge pump self power condition, the hydrocyclone granulation of dredging muddy water concentrates and dehydration pre-treatment, without the extra power-equipment that increases, belt filter press is set simultaneously after hydrocyclone prilling granulator body refuse after concentrated is carried out to Direct Dehydration, the solid-liquid separation process of whole dredging muddy water can complete on dredging vessel, without dredging muddy water is grown to distance, blow or lighter, can significantly reduce dredging vessel dredge pump lift and power consumption, there is the significant advantage of low-loss and energy-saving;
2, by form highdensity suspension slime layer in hydrocyclone prilling granulator, hydrocyclone prilling granulator can be with larger hydraulic load operation, body refuse grain graininess that in the slime layer that simultaneously suspends, self-granulation generates is large, density is high, settling property and concentrated effect good, there is high efficient solid and liquid separation effect;
3, because hydrocyclone prilling granulator is arranged on inner core bottom by muddy water import (4), muddy water tangentially enters inner core from inner core bottom, single-point water intake mode, make to launch successively along Motion of solid particle direction into unit processes such as de-steady, the granulation of water, particle, mud-water separation, concentrated and spoil disposals, process is compact and independent of one another, can not influence each other, thereby realize continuous operation;
4, because hydrocyclone prilling granulator has been realized continuous operation, in concentration process, synchronously completed dehydration pre-treatment simultaneously, can directly be connected with belt filter press, whole process structure is compact, floor space is little, simple to operate, is convenient to implement;
5, solid-liquid separation mainly realizes by the oneself's granulation of suspension slime layer and the belt press filtration of hydrocyclone prilling granulator inside, because suspension slime layer forms stable, device toggle speed is fast, water resistant power impact load ability is strong, belt filter press is to entering the water ratio strong adaptability of mud body refuse simultaneously, and whole solid-liquid separation process has stable outstanding advantage.
In sum: it is core that the concentrated and belt press filtration of hydrocyclone granulation is take in the present invention, by hydrocyclone, realize coagulated agent and the rapid reaction of dredging muddy water, and complete the concentrated and dehydration pre-treatment of muddy water in the inter-sync of hydrocyclone prilling granulator, hydrocyclone prilling granulator is arranged on inner core bottom by muddy water import (4), guaranteed that the unit processes such as de-steady, the granulation of muddy water, particle, mud-water separation, concentrated and spoil disposal launch successively along Motion of solid particle direction, process is compact and independent of one another, can not influence each other, thereby realize the continuous operation of device; Belt type filter-pressing dehydration plant is directly carried out in the mud extraction of hydrocyclone prilling granulator, realizes the instant high efficient solid and liquid separation of dredging muddy water on dredging vessel.In a word, the present invention have less energy-consumption, high-level efficiency, continous-stable, simple to operate, be convenient to the advantages such as enforcement.
Accompanying drawing explanation
Fig. 1 is solid-liquid separation process method flow schematic diagram of the present invention;
Fig. 2 is the hydrocyclone prilling granulator structural representation in the present invention;
Fig. 3 is hydrocyclone prilling granulator diagrammatic cross-section in the present invention;
Fig. 4 is dredge pump mud extraction piping plan in the present invention;
Fig. 5 is the traditional solid-liquid separation system schematic diagram based on hydrocyclone.
In Fig. 2,4 is muddy water import, and 5 is inner cylinder, and 6 is out cylinder, and 7 is rib, and 8 is delivery pipe, and 9 is shore pipe; A is hydrocyclone reaction zone, and B is hydrocyclone granulation zone, and C is mud-water separation district, and D is enrichment region, and E is clear water zone.
In Fig. 3,4 is muddy water import, and 5 is inner cylinder, and 6 is out cylinder.
In Fig. 4,1 dredge pump sludge out pipe, 2 is static mixer, and 3 is reducing, and I is dredge pump.
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in more detail.
Embodiment
Present embodiment is usingd inland lake dredging muddy water that south China city carries out environment-protective desilting dredging as solid-liquid separation object.Sand dredger is environmental protection spiral reamer snagboat, and theoretical production peak is 800m 3/ h, actual output is 500m 3/ h.The water ratio of dredging muddy water is between 96.7～92.4%.Equipment for separating liquid from solid 1 cover is set on snagboat, contains 1 of 2 of parallel running hydrocyclone prilling granulators and belt filter press.
Consult Fig. 1, dredging muddy water, by dredge pump (I) suction, is sent into hydrocyclone prilling granulator (II), the high 4.8m of hydrocyclone prilling granulator, and dredging muddy water upflow velocity is therein 45cm/min.Dredging muddy water completes the concentrated and dehydration pre-treatment of self-granulation in hydrocyclone prilling granulator, concentrated water outlet drains into dredging water body outward, concentrated body refuse solid content, between 81.2～85.7%, is delivered to belt filter press (IV) dehydration, belt filter press working load 120m by slush pump (III) 3/ h.Dehydrated sludge cake solid content, more than 60%, is delivered to land disposal by barge (V), and dehydration filtrate part is delivered to coagulating agent and coagulant aids mixing throwing device (VII) by fresh water pump (VI), and it is besides arranged, and the solid-liquid separation of dredging muddy water completes.
Consult figure (2), (3) and (4) simultaneously, in Dredging Process, dredging muddy water is pumped on sand dredger by dredge pump (I), pipeline static mixer (2) on dredge pump sludge out pipe (1) mixes with the medicament from coagulating agent and coagulant aids mixing throwing device (VII), coagulating agent adopts poly-ferric chloride, dosage 15mg/L, coagulant aids adopts anionic PAM, dosage 2mg/L.First the dredging muddy water mixing with coagulating agent pass through reducing (3), then deliver to hydrocyclone prilling granulator (II) muddy water import (4).Dredge pump sludge out pipe (1) caliber after reducing (3) becomes large, and muddy water flow velocity reduces, and the interior hydraulic stability of hydrocyclone prilling granulator (II) is improved, and the mixture homogeneity of coagulating agent, coagulant aids and dredging muddy water is improved simultaneously.Hydrocyclone device (II) is comprised of inner core (5) and urceolus (6), inner diameter of steel flue 3.5m, and urceolus diameter 5m, inner core is fixing by being fixed on outer tube inner wall supporting rib (7).Dredging muddy water is entered the hydrocyclone reaction zone (A) of inner core (5) along inner core (5) inwall tangential direction by muddy water import (4), the high 1.5m in cyclone reaction district (A), body refuse particle takes off steady and aggegation at hydrocyclone reaction zone (A), and flocs unit particle starts to gradually grow up.Dredging water body continues to rise, and enters into hydrocyclone granulation zone (B).The high 1.0m in hydrocyclone granulation zone (B), the process Zhong， hydrocyclone district (B) that reaches balance at hydrocyclone granulation zone (B) upflow velocity jacking force and body refuse particle gravity forms stable suspension slime layer.Growth flocs unit in dredging muddy water continues to grow up in hydrocyclone granulation zone (B), and under friction and Extrusion combined action between upflow velocity and suspension slime layer endoparticle, realize self-granulation, generate the compact spheroidal particle that granularity is large, density is high, settling property is good.The dredging muddy water that completes self-granulation continues to rise to the mud-water separation district (C) of urceolus (6).The high 0.6m in mud-water separation district (C), at mud-water separation district (C), compact spheroidal particle is because water-carrying section flow velocity reduces, upflow velocity jacking force reduces, under action of gravity, be settled down to enrichment region (D), and in enrichment region, realize concentrated and dehydration pre-treatment fast, enrichment region (D) is turbination, bottom, enrichment region is 1.0m to inner core bottom level, and its inclination angle is 30 °.Clear water after the mud-water separation clear water zone (E) that entry altitude is 0.4m, and drain into dredging water body by the delivery pipe (8) at hydrocyclone prilling granulator (II) top.After concentrated, body refuse particle is fine and close, particle diameter is large, and water ratio is low, be positioned at urceolus (6) bottom shore pipe (9) by slush pump (III) directly pump to belt filter press (IV) dewater.Dehydrated sludge cake is delivered to land disposal by barge (V), and dehydration filtrate is delivered to coagulating agent mixing throwing device (VII) for configuring coagulated agent by fresh water pump (VI).
It is core that the concentrated and belt press filtration of hydrocyclone granulation is take in the present invention, dredges the solid-liquid separation of muddy water.Utilize the dynamic condition of sand dredger dredge pump, carry out hydrocyclone granulation concentrated, without extra power equipment.Granulation process completes in suspension slime layer, and influent load is high, and floor space is little, and strong shock resistance, and toggle speed is fast.Granulation body refuse granularity is large, density is high, settling property good, can realize fast synchronous concentrated and dehydration pre-treatment.Hydrocyclone prilling granulator can directly be connected with belt filter press, realizes the continuous and steady operation of solid-liquid separation process.Above-mentioned feature makes the present invention have compact construction, advantage simple to operate, can on sand dredger, directly implement, and dredging muddy water is carried out to instant solid-liquid separation, and good effect of separating solid from liquid, processes high, stable, the low-loss and energy-saving of load simultaneously.
Certainly, above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit, although the present invention is had been described in detail with reference to above-described embodiment, those of ordinary skill in the field are to be understood that, still can modify or be equal to replacement the specific embodiment of the present invention, and do not depart from any modification of spirit and scope of the invention or be equal to replacement, it all should be encompassed in claim scope of the present invention.

Claims (5)

1. a method of dredging muddy water original position solid-liquid separation, it is characterized in that: hydrocyclone prilling granulator and pressure filter are set on dredging vessel, described pressure filter is directly connected with hydrocyclone prilling granulator, utilize dredge pump (I) the suction dredging muddy water arranging on dredging vessel, first dredging muddy water complete and the mixing of coagulating agent in pipeline static mixer (2), and delivering to afterwards hydrocyclone prilling granulator, to carry out granulation concentrated; Obtain clear water and concentrated body refuse, clear water directly enters water body, concentrated body refuse directly enters belt filter press (IV) and carries out filter-press dehydration, and the mud cake after dehydration is delivered to disposal by land, and the drainage obtaining after press filtration is sent into coagulating agent mixing throwing device (VIII) configuration coagulating agent;
Described hydrocyclone prilling granulator is comprised of inner cylinder (5) and out cylinder (6), pipeline static mixer one end is connected with the outlet of dredge pump (I), the other end is connected with the muddy water import (4) of hydrocyclone prilling granulator, after dredging muddy water mixes with coagulating agent in pipeline static mixer (2), by muddy water import (4), along the tangential direction of hydrocyclone prilling granulator inner cylinder (5), enter inner cylinder (5), and rotation rises to inner cylinder (5) and enter afterwards at the middle and upper levels out cylinder (6), complete the concentrated granulation of dredging muddy water; On out cylinder (6) top, be provided with delivery pipe (8), bottom is provided with shore pipe (9); Body refuse after concentrated directly pumps into belt filter press (IV) by slush pump (III) and dewaters, and described shore pipe (9), slush pump (III), pressure filter (IV) connect successively by pipeline.
2. the method for dredging according to claim 1 the original position solid-liquid separation of muddy water, is characterized in that: the concentrated required drive of dredging muddy water granulation is provided by the dredge pump on dredging vessel (I).
3. the device that the method described in right 1 adopts, comprises hydrocyclone prilling granulator, slush pump (III), pressure filter; It is characterized in that: described hydrocyclone prilling granulator is comprised of inner cylinder (5), out cylinder (6), muddy water import (4), delivery pipe (8), shore pipe (9), rib (7), described inner cylinder is fixing by rib (7) support being fixed on out cylinder inwall, and inner cylinder (5) bottom is provided with muddy water import (4); On urceolus (6) top, be provided with delivery pipe (8), bottom is provided with shore pipe (9); Described shore pipe (9), slush pump (III), pressure filter connect successively by pipeline.
4. device according to claim 3, is characterized in that: muddy water import (4) is connected with reducing (3), static mixer (2), dredge pump sludge out pipe (1) successively by dredging tube.
5. device according to claim 4, is characterized in that: the diameter of inner cylinder (5), out cylinder (6) is than being 0.6-0.8, and aspect ratio is 0.5-0.7; Out cylinder (6) bottom is turbination, and its inclination angle is 25-35 °.
CN201310203880.8A 2013-05-28 2013-05-28 Method and device for in-situ solid-liquid separation of dredged muddy water Expired - Fee Related CN103288324B (en)

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WO2016189232A1 (en) * 2015-05-20 2016-12-01 Soletanche Freyssinet Unit for treating a drilling mud and corresponding method

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