CN1774404A - Sludge concentration system and process which have functions for automatically charging a coagulant and for automatically controlling the concentration of sludge - Google Patents

Sludge concentration system and process which have functions for automatically charging a coagulant and for automatically controlling the concentration of sludge Download PDF

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Publication number
CN1774404A
CN1774404A CNA2004800097374A CN200480009737A CN1774404A CN 1774404 A CN1774404 A CN 1774404A CN A2004800097374 A CNA2004800097374 A CN A2004800097374A CN 200480009737 A CN200480009737 A CN 200480009737A CN 1774404 A CN1774404 A CN 1774404A
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mud
main shaft
movable disc
coagulating agent
supernatant liquor
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CN100531852C (en
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洪尚宪
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00Treatment of sludge; Devices therefor
    • C02F11/12Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5227Processes for facilitating the dissolution of solid flocculants in water
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5281Installations for water purification using chemical agents
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00Treatment of sludge; Devices therefor
    • C02F11/12Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/14Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00Apparatus for treatment of water, waste water or sewage
    • C02F2201/002Construction details of the apparatus
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00Apparatus for treatment of water, waste water or sewage
    • C02F2201/002Construction details of the apparatus
    • C02F2201/004Seals, connections
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/20Sludge processing

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Treatment Of Sludge (AREA)

Abstract

The present invention provides a process and system for sludge concentration which transfers sludge into a dewatering device while maintaining the sludge density at a predetermined level constant suitable for dewatering the sludge even when the density of the precipitated sludge varies, thus improving the sludge treating efficiency and sludge dewatering efficiency, and reducing the amount of a coagulant to be used. In the process and system for sludge concentration, an automatic sludge/water separation and discharge device is installed in a mixing flocculation tank. Thus, the sludge is mixed with the coagulant and flocculated in the mixing flocculation tank to produce flocs and a supernatant, while the supernatant is directly discharged from the mixing flocculation tank. Furthermore, the amount of the supernatant is controlled to maintain the desired density of the flocs to be transferred to the dewatering device. Thus, the dewatering device can be stably operated.

Description

Automatically filling coagulating agent and the spissated system and procedures of control mud automatically
Technical field
The present invention relates to spissated process of mud and system, in its mixed flocculation jar, automatic unloading mechanism has been installed, before the sludge dewatering process, automatically supernatant liquor is separated with mud with this.Like this, even under the situation of sedimentary mud variable density, it also can transfer to dewatering unit with mud, and the density of mud remained on scope predetermined, that be fit to high-efficiency dehydration, so improved the processing efficiency and the dewatering efficiency of mud, reduce the usage quantity of coagulating agent, and saved the labor force.
Background technology
Waste water quantity increases sharply in recent years, and the environmental pollution that waste water causes is serious day by day.Method for effective processing waste water is studied.
Usually, for the trade effluent of the high sludge content that contains heavy metal contaminants, adopt the physical/chemical treatment technology.In this technology, utilize the variation of chemistry or polymerization coagulating agent, the mud that will contain heavy metal contaminants separates from water.Then, utilize different dewatering units, thereby make the sludge cake drying, bury and burn processing sludge dewatering.Simultaneously, isolating supernatant liquor utilizes biology or physical/chemical technical finesse in the mud.
In sewage disposal device, the exemplary by the skilled operation of biologic treating technique is arranged.In order to improve the existence standard, the BOD of sewage concentrates and is used widely.Like this, the content of microorganisms of mud increases in the sewage, has suppressed the precipitation of mud.In addition, in recent years, the old pipeline before new sewer line (rainwater flows respectively by isolating pipeline with sewage) has replaced (sewage, rainwater flow without separating).Because the use of this new pipeline, for the sewage that need are handled through waste disposal plant, wherein the inoganic solids content of mud reduces, and sludge settling reduces like this, and causes mud density to reduce.
So in waste disposal plant, the processing property of dewatering unit and mud pulp digester (being used to reduce the quantity of mud) descends.
Figure 12 is traditional mud concentration systems structure iron.
As shown in figure 12, isolating water from the precipitating sludge of sewage is because the difference of liquid-solid proportion is discharged from settling tank 11; Sedimentary mud is delivered in the mud hold tank 12 through first transmission line 31 by one-level pump 21 simultaneously.In said process, the mud density that is delivered in the mud hold tank 12 changes with the variation of following condition: temperature, sludge content, seasonal variation, mud transmission cycle etc.
Then, the mud that is delivered in the mud hold tank 12 passes through two stage pump 22, is delivered in the mixed flocculation jar 13 through second transmission line 32.In said process, by first agitator 41, in coagulating agent dissolving vessel 14, coagulating agent (being used for water is separated from mud) is dissolved in the water, by triplex 23, it is filled in the mixed flocculation jar 13 afterwards through the 3rd transmission line 33.
In mixed flocculation jar 13, mud and coagulating agent are mixed together the generation throw out through second agitator 42.Afterwards this throw out is transferred to dewatering unit 15 through the 4th transmission line 34, and carry out processed therein.Be stable operation and the automatization of guaranteeing dewatering unit 15, flocculation mud need remain under predetermined density and the moisture content condition, make mud enter dewatering unit 15 before solid can be fully in liquid separation.
Yet, because the variation of variable, as the mud dimensional change that sludge content and temperature variation cause, seasonal variation, and microbic activity state (especially under the biogenic sediment situation of mud), the consumption that adds coagulating agent in the mud that transfers to mixed flocculation jar 13 can't suitably be controlled.In addition, the mud density that transfers in the mud hold tank 12 also can change with following condition, change the seasonal variation of sludge settling state etc. in the settling tank 11 as mud transmission cycle (sedimentary mud is transferred to the mud hold tank 12 from settling tank 11).So, transferring to the flocculation mud of dewatering unit 15 from the mixed flocculation jar, the excessive variation of its density may cause the processing property of dewatering unit 15 to reduce, thereby hinders its suitable operation.
Figure 13 is the figure as a result of the traditional sludge concentration systems of another kind of device.
As shown in figure 13, sedimentary mud is delivered to centrifugal concentrating unit 52 by one-level pump 61 through first transmission line 71 in the settling tank 51, and this device is concentrated into the expection level with mud.Then spissated mud is passed through two stage pump 62, be delivered to mud hold tank 53 through second transmission line 72.
By triplex 43, mud is delivered in the mixed flocculation jar 55 again through the 3rd transmission line 73.In the said process, the middle part that specific gravity hydrometer 57 is installed in the 3rd transmission line 73 is to measure the density of transmission mud.
In addition, a part of coagulating agent is dissolved in coagulating agent dissolving vessel 54, and, it is filled in the mixed flocculation jar 55 through the 4th transmission line 74 by four-stage pump 64 by first agitator 81.
In said process, the addition of coagulating agent is controlled by feedback control method, and its addition is based upon on the mud density basis of specific gravity hydrometer 57 mensuration.
In mixed flocculation jar 55, mud and coagulating agent are mixed together the generation throw out through second agitator 82.Afterwards this throw out is transferred to dewatering unit 56 through the 5th transmission line 76, and carry out processed therein.
Through the mud that first transmission line 71 is carried from settling tank 51, when it carried out concentration in centrifugal concentrating unit 52, its process utilized centrifugal force to finish, and this centrifugal force is based upon in mud density and the settling tank 51 on the sedimentary sludge characteristics basis.Therefore, the density of mud possibility excessive variation also possibly can't be concentrated to the level that needs.In addition, the coagulating agent quantity that is added in the mixed flocculation jar 55 also may change according to the parameter that changes above, wherein also comprises the mud density that specific gravity hydrometer 57 is measured.So specific gravity hydrometer 57 does not utilize fully, to such an extent as to traditional mud concentration systems can't be practical.
As mentioned above, owing to above reason, be difficult in trend mixed flocculation jar, add an amount of pharmaceutical chemicals.In addition, owing to the mud variable density that is delivered to dewatering unit from the mixed flocculation jar, dewatering unit can't suitably be controlled.So just according to operator's sensation operation, the result causes a lot of problems in this system, as consuming excessively of pharmaceutical chemicals, the inappropriate operation of dewatering unit, the poor efficiency processing of mud etc.
Summary of the invention
The present invention keeps the problems referred to above firmly in mind, primary goal provides spissated process of mud and system, it can be offloaded to dewatering unit automatically with mud, under the situation of sedimentary mud variable density, liquid can be before dehydration remains on scope predetermined, that be fit to dehydration with the density of mud, so improved the processing efficiency and the dewatering efficiency of mud, reduced the usage quantity of coagulating agent.
Second target provides spissated process of mud and system, in its mixed flocculation jar automatic unloading mechanism has been installed, and automatically supernatant liquor separated with mud before the sludge dewatering process with this.Like this, even under the situation of sedimentary mud variable density, it also can transfer to dewatering unit with mud, and the density of mud is remained on scope predetermined, that be fit to high-efficiency dehydration, so improved the processing efficiency and the dewatering efficiency of mud, reduced the usage quantity of coagulating agent.
For finishing above first target, the present invention provides following process for mud concentrates, and sequence arrangement settling tank, mud hold tank, coagulating agent dissolving vessel, mixed flocculation jar and dewatering unit comprise: sedimentary mud in the settling tank is delivered to the mud hold tank; The mud that stores in the mud hold tank is delivered to the mixed flocculation jar; From the coagulating agent dissolving vessel, be added into coagulating agent in the mixed flocculation jar; Mud is mixed in the mixed flocculation jar with coagulating agent and form throw out and supernatant liquor by agitator; Throw out is delivered to the dewatering unit dehydration, and wherein flocculation agent and supernatant liquor are controlled in the mixed flocculation jar, and the control discharging quantity also keeps constant density, and supernatant liquor is recycled to the settling tank by the water shoot that extends out from the mixed flocculation jar.
In this process, the supernatant liquor that from the mixed flocculation jar, unloads by water shoot, by the operation of the ON/OFF on the valve that is installed in water shoot middle part control, it is based upon on the supernatant liquor density of measuring by second specific gravity hydrometer and second under meter (being installed in the water shoot middle part) and flow basis.Simultaneously, control is added into coagulating agent quantity the mixed flocculation jar from the coagulating agent dissolving vessel, thereby final control transmission is to the mud density of dewatering unit.
In addition, in this process, the amount of sludge that is delivered to the mixed flocculation jar from the mud hold tank is controlled by pump, and this pump is installed on the mud transmission pipeline that connects mud hold tank and mixed flocculation jar.With this understanding, can be consistent by water shoot unloading and the supernatant liquor quantity that is recycled to settling tank.
For finishing above first target, the present invention concentrates the following equipment that provides for mud, comprise: settling tank, the mud hold tank, the coagulating agent dissolving vessel, mixed flocculation jar and dewatering unit, first transmission pipeline that connects settling tank and mud hold tank, second transmission pipeline that connects mud hold tank and mixed flocculation jar, be installed in the two stage pump and first specific gravity hydrometer at second transmission pipeline middle part, the 4th transmission pipeline that connects coagulating agent dissolving vessel and mixed flocculation jar, the 5th transmission pipeline that connects coagulating agent dissolving vessel and dewatering unit, and be installed in second transmission pipeline middle part, first specific gravity hydrometer, wherein mixed flocculation is canned is furnished with automatic mud/supernatant liquor tripping device and unloading mechanism, this device mixes mud by agitator with coagulating agent, it is delivered to the mixed flocculation jar from mud hold tank and coagulating agent dissolving vessel respectively, produce throw out and it is delivered to dewatering unit, and will from throw out, discharge by isolating supernatant liquor.
As mentioned above, the invention provides spissated process of mud and system, wherein be to have installed in the mixed flocculation jar automatic mud/water sepn and unloading mechanism.Like this, mud mixes with coagulating agent in the mixed flocculation jar and flocculates, and produce floss and supernatant liquor, and supernatant liquor is discharged directly.In addition, control supernatant liquor quantity, with this floss that keeps transferring to dehydration equipment in ideal density, so can stably operate dehydration equipment.
Description of drawings
Fig. 1 is the mud concentration systems structure iron of the preferred unit according to the present invention;
Fig. 2 is automatic mud/water separation device and the unloading mechanism structure iron that is installed in the mixed flocculation jar of Fig. 1;
Fig. 3 is the partial graph of automatic mud/water separation device of Fig. 2 and unloading mechanism;
Fig. 4 is corresponding to Fig. 2, but its demonstration is automatic mud/water separation device and the unloading mechanism structure iron that is installed in another device mixed flocculation jar of the present invention;
Fig. 5 is the partial graph of automatic mud/water separation device of Fig. 4 and unloading mechanism;
Fig. 6 is for further to install according to the present invention, is installed on automatic mud/water separation device and unloading mechanism structure iron in the mixed flocculation jar of Fig. 1;
Fig. 7 is the partial graph of automatic mud/water separation device of Fig. 6 and unloading mechanism;
Fig. 8 is corresponding to Fig. 6, but its demonstration remain automatic mud/water separation device and the unloading mechanism structure iron that is installed in another device mixed flocculation jar of the present invention;
Fig. 9 is the partial graph of automatic mud/water separation device of Fig. 8 and unloading mechanism;
Figure 10 is corresponding to Fig. 8, but its demonstration remain automatic mud/water separation device and the unloading mechanism structure iron that is installed in another device mixed flocculation jar of the present invention;
Figure 11 is the partial graph of automatic mud/water separation device of Figure 10 and unloading mechanism;
Figure 12 is the structure and the process sequence figure of traditional sludge concentration systems;
Figure 13 is the structure and the process sequence figure of another traditional sludge concentration systems.
Embodiment
Below with reference to accompanying drawing, the mud concentration systems of preferred unit of the present invention is described in detail.
Fig. 1 is the mud concentration systems structure iron of the preferred unit according to the present invention.
As shown in Figure 1, the mud concentration systems 100 of preferred unit according to the present invention, isolating water from the precipitating sludge of sewage is because the difference of liquid-solid proportion is discharged from settling tank 111, mud is delivered in the mud hold tank 112 through first transmission line 131 by one-level pump 121 simultaneously.Then, by two stage pump 122, mud is delivered to the mixed flocculation jar 113 from mud hold tank 112 through second transmission line 132.
First specific gravity hydrometer 157 and first flow meter 158 are installed in second transmission line, 132 middle parts.First specific gravity hydrometer 157 and first flow meter 158 are measured density and the flow that is delivered to mixed flocculation jar 113 mud respectively.Like this, before mud finally is delivered to dewatering unit 115, the density and the flow of mud can be remained on the proper level that dewatering unit 115 producers require.
In addition,, in coagulating agent dissolving vessel 114, coagulating agent (being used for water is separated from mud) is dissolved in the water, by triplex 123, it is filled in the mixed flocculation jar 113 afterwards through the 3rd transmission line 133 by first agitator 141.In said process, be control coagulating agent addition, utilize second specific gravity hydrometer 175 to measure the rpm of the density of coagulating agent, wherein pump and 175 interlockings of second specific gravity hydrometer and control by feedback with control pump.
In mixed flocculation jar 113, mud and the coagulating agent agitator in automatic mud/water sepn and unloading mechanism mixes, and produces throw out and supernatant liquor.Afterwards this throw out is transferred to dewatering unit 115 through the 5th transmission line 135, and carry out processed therein.
Be stable operation and the automatization of guaranteeing dewatering unit 115, flocculation mud need remain under predetermined density and the moisture content condition, make mud enter dewatering unit 115 before solid can be fully in liquid separation.
For reaching above target, automatic mud/water sepn and unloading mechanism have been installed by the system of preferred unit according to the present invention in mixed flocculation jar 113, the predetermined density that it can add pharmaceutical chemicals automatically and keep mud.
Fig. 2, Fig. 3 are preferred unit according to the present invention, are installed on automatic mud/water separation device and unloading mechanism 160 structure iron in the mixed flocculation jar 113.
As shown in Figures 2 and 3, the preferred unit according to the present invention, the automatic mud/water separation device and the unloading mechanism 160 that are installed in the mixed flocculation jar 113 comprise: outer tube 161, having the edge is the tetragonal prism structure or the column structure of predetermined bend radius; Extend out to the throw out unloading pipe 162a of predetermined length from the top of outer tube 161, unload the throw out that produces by agitator thus, and externally mixing sludge and coagulating agent.
Outer tube 161, it has defined and has been used for mud and coagulating agent mixes first space S 1, comprise the mud source line 163 that extends to predetermined length from outer tube 161 bottoms simultaneously, it is directed into first space S 1 of outer tube 161 with mud hold tank 112, and is connected with second transmission line 132 that extends out from mud hold tank 112.In addition, close on mud source line 163 places, coagulating agent source line 164 extends to predetermined length from outer tube 161 bottoms, and is connected with the 4th transmission line 134 that extends out from coagulating agent dissolving vessel 114.
In addition, the central longitudinal of outer tube 161 is started main shaft 165 to being equipped with, and its upper end is equipped with engine 166 and makes its rotation.In said process, engine 166 is installed on the upper wall (not shown) of outer tube 161, and is operated by the external power source (not shown).
Main shaft 165 is from the internal surface longitudinal extension of outer tube 161.Leaf paddle stirrer 168 is installed on the main shaft 165, and it comprises two vertical straight oar 168a, and this leaf oar direction along parallel main axis 165 in outer tube 161 is extended, and in other words, it is at the longitudinal extension of outer tube 161.The horizon bar 168b that connects the straight oar 168a upper end of hanging down is installed on the main shaft 165, supports the straight oar 168a that hangs down with this.
Because agitator 168 is installed in (the two is connected as a single entity at main shaft 165 middle parts) on the main shaft 165 by horizon bar 168b, so when main shaft 165 rotations, agitator 168 is done in the same way rotation along the main axis rotation direction, and with mud and coagulating agent at first space S, 1 mixed flocculation.
In the internal space of agitator 168, revolving bar 169 is installed and is connected as a single entity with main shaft 165, it has similar structure to leaf paddle stirrer 168, comprise a vertical rod 169a, direction along parallel main axis 165 in outer tube 161 is extended, and in other words, it is at the longitudinal extension of outer tube 161; Two horizon bar 169b, top and lower end horizontal-extending from vertical rod 169a support vertical rod 169a with this.Because revolving bar 169 is installed on the main shaft 165 at horizon bar 169b end, so when main shaft 165 rotations, agitator 168 is done rotation in the same way along the main axis rotation direction.
181, one groups of movable disc 167b of a top disk and one group of static disk 167a are installed, make it, form laminate structure in the position of vertical rod 169b inside along around main shaft 165.In addition, a cylindrical support structure 182 is installed, around main shaft 165 below revolving bar 169.In above process, with top disk 181, one group of movable disc 167b and one group of static disk 167a and cylindrical support structure 182 are installed as a whole, and to form a cylinder screen type structure 180 with predetermined gap G, it has defined second space S 2 to collect water before draining.
By being formed centrally an axis hole 183 in the top disk 181, main shaft 165 extends by this hole from engine 166.
After this, main shaft 165 extends to the inside of lower support structure 182, passes annular movable disc 167b and static disk 167a simultaneously.In said process, movable disc 167b and static disk 167a vertically alternately are installed on the main shaft 165, separate by the one group of dividing plate 167f that is installed on therebetween each other, have just defined G at interval like this between the two.
Install one group in the inner radial surface of each static disk 167a and connect projection 167c, and be equipped with a pin hole 167d at the middle part of each 167c.One group of toroidal membrane 167f is installed between movable disc 167b and the static disk 167a, makes the interval that has predetermined rule between the two.
By installing movable disc 167b and static disk 167a as a whole: one group of joint nut 167h with lower device, one group of connection pin 167g that passes pin hole on the top disk 181 (no reference number is specified), the pin hole 167d between dividing plate 167f and the static disk 167a.
After mud and coagulating agent entered mixed flocculation jar 113, when main shaft 165 rotations, revolving bar was along with main shaft 165 rotations.In above process, movable disc 167b and static disk 167a have defined cylinder screen type structure, and wherein the dividing plate 167f at the interval of movable disc 167b by predetermined rule is arranged and static disk 167a are separately.In addition, the external diameter of movable disc 167b is greater than static disk 167a, and the rotation radius of two revolving bars equals the external diameter of static disk 167a.Like this, when revolving bar rotated, movable disc 167b was in the sense of rotation fluctuation with respect to static disk 167a.
Water unloading pipeline 162b extends out to predetermined length from the edge of lower support structure 182 along radial direction, passes first space and outer tube 161 protrusion outsides, and is connected (water shoot is installed in mixed flocculation jar 113 bottoms) with water shoot 136.
Below with reference to accompanying drawing,, the mud concentration process that above-mentioned automatic mud/supernatant liquor tripping device and unloading mechanism 160 have been installed is described in detail according to preferred unit of the present invention.
At first, sedimentary mud is delivered in the mud hold tank 112 through first transmission line 131 by one-level pump 121 from settling tank 111.Then, by two stage pump 122, mud is delivered to the mixed flocculation jar 113 from mud hold tank 112 through second transmission line 132.
In addition, in coagulating agent dissolving vessel 114, coagulating agent (being used for water is separated from mud) is dissolved in the water, by triplex 123, it is filled in the mixed flocculation jar 113 afterwards through the 4th transmission line 134.
In mixed flocculation jar 113, mud and the coagulating agent agitator in automatic mud/supernatant liquor separation and unloading mechanism 160 mixes, and produces throw out and supernatant liquor.In said process, separate and unloading mechanism 160 keeps mud at predetermined level of density according to the automatic mud of preferred unit of the present invention/supernatant liquor, to guarantee the stable operation and the automatization of dewatering unit 115.
Automatically mud/supernatant liquor separate and unloading mechanism 160 by following operation: when main shaft 165 after engine 166 drives rotation, entered mixed flocculation jar 113 (in other words, by mud source line 163 and coagulating agent source line 164, enter that automatic mud/supernatant liquor separates and the outer tube 161 of unloading mechanism 160) mud and coagulating agent, slowly the bottom from first space S 1 moves to top, mixes by agitator 168 (with main shaft 165 rotations) simultaneously.
In said process, throw out is bonded at the outside surface of static disk 167a and movable disc 167b, and simultaneously, because the rotation of main shaft 165, throw out slowly moves to top from the bottom of first space S 1.Yet the vertical rod 169a by revolving bar 169 can remove the throw out on the disk.
In the said process, because the vertical rod 169a of revolving bar 169 (with main axis rotation) contacts with the outside surface of static disk 167a, movable disc 167b is in the sense of rotation fluctuation with respect to static disk 167a.Like this, revolving bar 169 has had automatic cleaning function, has stoped the clearance G between static disk 167a and the movable disc 167b to be blocked by throw out, and Just because of this, equipment 160 just can unload supernatant liquor reposefully.Supernatant liquor in the mixed flocculation jar flows to second space S 2 by clearance G, and the water unloading pipeline 162b by lower support structure 182 of flowing downward drains into the outside of outer tube 161.Subsequently, supernatant liquor is discharged by water shoot 136.
If the mud that is delivered in the mixed flocculation jar 113 has the performance of hope, and added an amount of pharmaceutical chemicals, then in the throw out that flocculation produces, the solid size will be less than 1mm.In the said process, supernatant liquor has constant SS density.
Fig. 4, Fig. 5 are according to the of the present invention second first-selected device, are installed on the automatic mud/water separation device in the mixed flocculation jar 113 and the structure iron of unloading mechanism 260.
In the of the present invention second first-selected device, except that the part of screen construction 280, the automatically general shape of mud/water separation device and unloading mechanism 260 and above-mentioned 160 identical with reference to figure 2, Fig. 3.Therefore, identical with first-selected device appointment is no longer narrated here.
As Fig. 4 and shown in Figure 5, according to the of the present invention second first-selected device, automatically in the cylinder shape screen construction 280 of mud/water separation device and unloading mechanism 260, the inner radial surface of each static disk 267a is installed one group and is connected projection 267c, and is equipped with a pin hole 267d at the middle part of each 267c.In addition, the radially-outer surface of each movable disc 267b is installed a 267e of annular projection.
One group of toroidal membrane 267f is installed between movable disc 267b and the static disk 267a, makes the interval that has predetermined rule between the two.
By installing movable disc 267b and static disk 267a as a whole: one group of joint nut 267h with lower device, one group of connection pin 267g that passes pin hole on the top disk 281 (no reference number is specified), the pin hole 267d between dividing plate 267f and the static disk 267a.According to the of the present invention second first-selected device, the vertical rod 269a of revolving bar 269 inserts the 267e of annular projection of movable disc 267b.Like this, when main shaft 265 rotations, movable disc 267b relies on the vertical rod 269a of revolving bar 269 (with main shaft 265 rotations) in some sense.In the said process, the interior external diameter of movable disc 267b and static disk 267a equates.
After mud and coagulating agent entered mixed flocculation jar 113, when main shaft 265 rotation, movable disc 267b (in predetermined gap by dividing plate 267f and static disk 267a separately) moved with respect to static disk 267a in the main axis rotation direction.It has had automatic cleaning function like this, has stoped clearance G to be blocked by throw out.
According to second preferred unit of the present invention, the mud concentration process of above-mentioned automatic mud/supernatant liquor tripping device and unloading mechanism 260 has been installed, almost be equal to the process of preferred unit.
Based on the movable disc 267b of improvement, the operating process of automatic mud/supernatant liquor tripping device and unloading mechanism 260 is described below.When main shaft 265 after engine 266 drives rotation, mud and coagulating agent slowly move to top from the bottom of first space S 1, mix by agitator 268 (with main shaft 265 rotations) simultaneously.
In said process, movable disc 267b around main shaft 265 rotations, relies on the vertical rod 269a (267e of annular projection that inserts movable disc 267b installs) of revolving bar 269 (with main shaft 265 rotations) along with the vertical rod 269a of revolving bar 269 in some sense.Like this, the vertical rod 269a of revolving bar 269 (with main axis rotation) contacts with the outside surface of static disk 267a, can remove the throw out on movable disc 267b and the static disk 267a, thereby stop throw out to enter second space S 2 by the clearance G of cylinder shape screen construction 280.
In addition, movable disc 267b has had automatic cleaning function along with revolving bar moves at the circumferential direction with respect to static disk 267a, has stoped clearance G to be blocked by throw out.
The throw out that the mud flocculation produces, 262a unloads from first space S 1 by throw out unloading pipeline.
Supernatant liquor flows to second space S 2 by clearance G, and the water unloading pipeline 262b by lower support structure 282 of flowing downward drains into the outside of outer tube 261.Subsequently, supernatant liquor is discharged by water shoot 236.
Fig. 6 and Fig. 7 are according to the 3rd device of the present invention, are installed on the automatic mud/supernatant liquor tripping device in the mixed flocculation jar 113 and the structure iron of unloading mechanism 360.
About the 3rd first-selected device of the present invention, in the narration of mud/supernatant liquor tripping device and unloading mechanism 360, the appointment identical with the described first-selected device of Fig. 2, Fig. 3 be no longer narration here automatically following.
As Figure 6 and Figure 7, in the automatic mud/supernatant liquor tripping device and unloading mechanism 360 in the of the present invention the 3rd first-selected device, outer tube 361 has defined first space S 1 therein.
Throw out unloading pipeline 362a extends out to predetermined length from outer tube 361 tops, agitator and mud, coagulating agent can be mixed the throw out that produces and discharges.
Automatically the central longitudinal of the outer tube 361 of mud/supernatant liquor tripping device and unloading mechanism 360 is started main shaft 365 to being equipped with, and the outerface of spindle is equipped with screw 365a, and itself and main shaft are an integral body in some sense.
Main shaft upper end has 381, one groups of movable disc 367b of upper support structure, one group of static disk 367a and a cylinder shape lower support structure 382 is assembled around main shaft 365 (having screw 365a).381, one groups of movable disc 367b of upper support structure, one group of static disk 367a and lower support structure 382 assembling mutually form laminate structures, and have constituted the screen construction 380 (it has defined second space S 2) that has predetermined gap.
The radially-outer surface of static disk 367a is installed one group of 367e of annular projection, and is assembled into an integral body each other by union lever 370 (passing the 367c of annular projection of static disk 367a).One group of toroidal membrane 367f is installed between movable disc 367b and the static disk 367a, makes the interval that has predetermined rule between the two, and defined clearance G betwixt.Wherein movable disc 367b movably is installed between the static disk 367a.
The internal diameter of movable disc 367b is less than the internal diameter of static disk 367a.
After mud and coagulating agent entered mixed flocculation jar 113, when main shaft 365 rotation, mud and coagulating agent be by the rotation and the stirring of screw 365, moves to top from the bottom of second space S 1.When the radius of movable disc 367b during less than the screw radius, movable disc 367b rotates with respect to static disk 367a, has had automatic cleaning function, has stoped clearance G to be blocked by throw out.Therefore, can unload supernatant liquor reposefully by clearance G.
Water unloading pipeline 362b extends out to predetermined length from the edge of upper support structure 381 along radial direction, passes first space and outer tube 361 protrusion outsides, and is connected (water shoot is installed in mixed flocculation jar 113 bottoms) with water shoot 136.
Mud source line 363 extends to predetermined length from the bottom of lower support structure 382.Its with mud hold tank 112 be directed into automatic mud/supernatant liquor tripping device and unloading mechanism 360 second space S 2.And pass outer tube 361, be connected with second transmission line 132 that extends out from mud hold tank 112.
In addition, close on mud source line 363 places, coagulating agent source line 364 extends to predetermined length from the bottom of lower support structure 382, and passes outer tube 361, is connected with the 4th transmission line 134 that extends out from coagulating agent dissolving vessel 114.
Below with reference to accompanying drawing,, the mud concentration process that above-mentioned automatic mud/supernatant liquor tripping device and unloading mechanism 360 have been installed is described in detail according to the 3rd preferred unit of the present invention.
Below based on the screen construction 380 that has predetermined gap, the operating process of automatic mud/supernatant liquor tripping device and unloading mechanism 360 is described.When main shaft 365 after engine 366 drives rotation, screen construction 380 inside have been entered (in other words, by mud source line 363 and coagulating agent source line 364, enter second space) mud and coagulating agent, slowly the bottom from second space S 2 moves to top, screw thread 365a by main shaft 365 mixes simultaneously, and generates throw out and supernatant liquor.
In the said process, rotation and the stirring by screw 365a of mud and coagulating agent moves to top from the bottom of second space S 2.Supernatant liquor is offloaded to first space S 1 by clearance G, and drains into the outside by throw out unloading pipeline 362b.
Fig. 6 and Fig. 7 are according to the 4th device of the present invention, are installed on the automatic mud/supernatant liquor tripping device in the mixed flocculation jar 113 and the structure iron of unloading mechanism 460.
In the of the present invention the 4th first-selected device, except that the part of screen construction 480, mud/water separation device and unloading mechanism 460 have kept above-mentioned 360 something in common with reference to figure 6, Fig. 7 automatically.Therefore, identical with first-selected device appointment is no longer narrated here.
According to the of the present invention the 4th first-selected device, the central longitudinal of the outer tube 461 of mud/supernatant liquor tripping device and unloading mechanism 460 is started main shaft 465 to being equipped with automatically.In addition, main shaft 465 outside surfaces are equipped with screw 465a, and itself and main shaft are an integral body in some sense.
Main shaft upper end has 481, one groups of movable disc 467b of upper support structure, one group of static disk 467a and a cylinder shape lower support structure 482 is assembled around main shaft 465 (having screw 465a).481, one groups of movable disc 467b of upper support structure, one group of static disk 467a and lower support structure 482 assembling mutually form laminate structures, and have constituted the screen construction 480 (it has defined second space S 2) that has predetermined gap.
In the internal space of screen construction 480, revolving bar 469 is installed on main shaft 465.It has identical structure with revolving bar 169 in the first-selected device of the present invention.Specifically, revolving bar 469 comprises a vertical rod 469a, and the direction along parallel main axis 465 in outer tube 461 is extended, and in other words, it is at the longitudinal extension of outer tube 461; Two horizon bar 469b, top and lower end horizontal-extending from vertical rod 469a support vertical rod 469a with this.Because revolving bar 469 is installed on the main shaft 465 at horizon bar 469b end, so when main shaft 465 rotations, it does rotation in the same way along the main axis rotation direction.
The radially-outer surface of static disk 467a is installed one group of 467e of annular projection, and is assembled into an integral body each other by union lever 470 (passing the 467e of annular projection of static disk 467a).One group of toroidal membrane 467f is installed between movable disc 467b and the static disk 467a, makes the interval that has predetermined rule between the two, and defined clearance G betwixt.Wherein movable disc 367b movably is installed between the static disk 367a.
The vertical rod 469a of revolving bar 469 is placed in the inside of screen construction, itself and 481, one groups of movable disc 467b of upper support structure, and one a group of static disk 467a and a cylinder shape lower support structure 482 are made an integral body.
After mud and coagulating agent entered mixed flocculation jar 113, when main shaft 465 rotations, revolving bar 469 changeed along main shaft 465 choosings.Movable disc 467b passes through dividing plate 267f and static disk 267a separately in predetermined gap.In main shaft 465 rotary courses, movable disc 467b is by the vertical rod 469a of revolving bar 469, with respect to static disk 467a rotation and fluctuation.
Below with reference to accompanying drawing,, the mud concentration process that above-mentioned automatic mud/supernatant liquor tripping device and unloading mechanism 460 have been installed is described in detail according to the 4th preferred unit of the present invention.
Below based on the screen construction 480 that has clearance G, the operating process of automatic mud/supernatant liquor tripping device and unloading mechanism 460 is described.When main shaft 465 after engine 466 drives rotation, screen construction 480 inside have been entered (in other words, by mud source line 463 and coagulating agent source line 464, enter second space) mud and coagulating agent, slowly the bottom from second space S 2 moves to top, screw thread 465a by main shaft 465 mixes simultaneously, and generates throw out and supernatant liquor.In the said process, throw out moves to top from the bottom of second space S 2, and drains into the outside by throw out unloading pipeline 462b.Simultaneously, supernatant liquor is offloaded to first space S 1 by clearance G.
The radially-outer surface of static disk 567a is installed one group of 467e of annular projection, and is assembled into an integral body each other by union lever 470 (passing the 467e of annular projection of static disk 467a).Since between static disk 467a, support movable disc 467b, the interval that has predetermined rule between the two, and this makes supernatant liquor to discharge by clearance G (being defined by static disk 367a and movable disc 467b).
In the said process, because the vertical rod 469a of revolving bar 469 (with main axis rotation) contacts with the internal surface of static disk 467a and movable disc 467b, and the outside surface of union lever 470 contacts with the outside surface of movable disc 467b.Throw out on so just can clear disk has stoped the clearance G between static disk 167a and the movable disc 167b to be blocked by the mixture of mud and coagulating agent.In addition, supernatant liquor can flow to second space S 2 by the clearance G of screen construction 480.Simultaneously,
The mud of flocculation can unload pipeline 462a (being installed on outer tube 461 bottoms) by throw out, discharges from screen construction 480.
Figure 10 and Figure 11 are according to the 5th device of the present invention, are installed on the automatic mud/supernatant liquor tripping device in the mixed flocculation jar 113 and the structure iron of unloading mechanism 560.
The of the present invention the 5th first-selected device among Figure 10 and Figure 11, except that the part of screen construction 580, the automatically general shape of mud/water separation device and unloading mechanism 560 and above-mentioned 460 identical with reference to figure 8, Fig. 9.Therefore, identical with the 4th first-selected device appointment is no longer narrated here.
According to the of the present invention the 5th first-selected device, the central longitudinal of the outer tube 561 of mud/supernatant liquor tripping device and unloading mechanism 560 is started main shaft 565 to being equipped with automatically.In addition, main shaft 565 outside surfaces are equipped with screw 565a, and itself and main shaft are an integral body in some sense.
Main shaft upper end has 581, one groups of movable disc 567b of upper support structure, one group of static disk 567a and a cylinder shape lower support structure 582 is assembled around main shaft 565 (having screw 565a).581, one groups of movable disc 567b of upper support structure, one group of static disk 567a and lower support structure 582 assembling mutually form laminate structures, and have constituted the screen construction 580 (it has defined second space S 2) that has predetermined gap.
In the internal space of screen construction 580, revolving bar 569 is installed on main shaft 565.It has identical structure with revolving bar in the present invention's second first-selected device.Specifically, revolving bar 569 comprises a vertical rod 569a, and the direction along parallel main axis 565 in outer tube 561 is extended, and in other words, it is at the longitudinal extension of outer tube 561; Two horizon bar 569b, top and lower end horizontal-extending from vertical rod 569a support vertical rod 569a with this.Because revolving bar 569 is installed on the main shaft 565 at horizon bar 569b end, so when main shaft 565 rotations, it does rotation in the same way along the main axis rotation direction.
The radially-outer surface of static disk 567a is installed one group of 567e of annular projection, and is assembled into an integral body each other by union lever 570 (passing the 567e of annular projection of static disk 567a).One group of toroidal membrane 567f is installed between movable disc 567b and the static disk 567a, makes the interval that has predetermined rule between the two, and defined clearance G betwixt.
In addition, the inner radial surface of movable disc 567b is installed one group of 567f of annular projection, and the vertical rod 569a of revolving bar 569 inserts by the hole of 567f.Movable disc 567b just is connected as a single entity each other by vertical rod 569a like this, is installed between the static disk 567a and can rotates freely.The main shaft upper end has upper support structure 581, and movable disc 567b, static disk 567a and lower support structure 582 have constituted screen construction, and the vertical rod 569a of revolving bar 569 is placed in one simultaneously.
The internal diameter of movable disc 567b and external diameter equal internal diameter and the external diameter of static disk 567a.
After mud and coagulating agent entered mixed flocculation jar 113, when main shaft 565 rotation, movable disc 567b in predetermined gap by dividing plate 567f (moving in main shaft 565 sense of rotation) and static disk 567a separately.
Movable disc 567b is with respect to static disk 567a rotation and fluctuation.
Below with reference to accompanying drawing,, the mud concentration process that above-mentioned automatic mud/supernatant liquor tripping device and unloading mechanism 560 have been installed is described in detail according to the 5th preferred unit of the present invention.
Below based on the screen construction 580 that has clearance G, the operating process of automatic mud/supernatant liquor tripping device and unloading mechanism 560 is described.When main shaft 565 after engine 566 drives rotation, screen construction 580 inside have been entered (in other words, by mud source line 563 and coagulating agent source line 564, enter second space) mud and coagulating agent, slowly the bottom from second space S 2 moves to top, the rotation of the screw 565a by main shaft 565 simultaneously with mix.
In the said process, mud and coagulating agent mix and flocculate by main shaft screw 565a's, generate throw out and supernatant liquors in second space S 2.Throw out moves to top from the bottom of second space S 2, and drains into the outside by the throw out unloading pipeline 562b of upper support structure 581.Simultaneously, supernatant liquor is offloaded to first space S 1 by clearance G.
Because movable disc 567b places between the static disk 567a, and static disk 567a is assembled into an integral body each other by union lever 570 (passing the 567e of annular projection of static disk 567a), the interval that has predetermined rule between the two simultaneously, this makes supernatant liquor to discharge by clearance G (being defined by static disk 567a and movable disc 567b).
In the said process, the outside surface of union lever 570 passes the 567e of annular projection of static disk 567a, contacts with the outside surface of movable disc 567b.And movable disc 567b can steadily rotate by the vertical rod 569a of revolving bar 569, the throw out on so just can clear disk.In addition, movable disc 567b fluctuates with respect to static disk 567a, and this makes throw out to discharge automatically from clearance G.So just stoped clearance G to be blocked effectively by the mixture of mud and coagulating agent.Therefore, mud and coagulant mixture can flow to first space S 1 by the clearance G of screen construction 580.Simultaneously, the mud of flocculation can unload pipeline 562a (being installed on outer tube 561 bottoms) by throw out, discharges from first space S 1.
The result sets up under the following conditions with analysis, supposes that mud passes through two stage pump 122 with constant flow 5m 3/ h is delivered to mixed flocculation jar 113, and the mud density of measuring by first specific gravity hydrometer 157 is 10000mg/l.In addition, suppose to work as mud with flow 50kgds/hr (5m 3/ h), when density 10000mg/l carries, the sludge dewatering efficient maximum of dewatering unit 115.In these cases, in mixed flocculation jar 113,, water is separated with mud by the mixing of mud and flocculation agent, stirring and flocculation, and with 2.5m 3The flow of/hr is discharged from automatic mud/supernatant liquor tripping device and unloading mechanism 160.In the said process, than the mud density that is delivered to mixed flocculation jar 113, the density of the 200-300mg/l of unloading water can be ignored.Like this, when calculating mud density under not considering to unload the density situation of water, the mud density that is delivered to dewatering unit 115 is 20000mg/l.
Generally, mud is delivered to mixed flocculation jar 113, so carry the quantity of mud constant by quantitative pump.Suppose that mud is that 15000mg/l (measuring by first specific gravity hydrometer 157) is delivered to the mixed flocculation jar with constant flow 5mm, density, automatic mud/supernatant liquor the tripping device and the unloading mechanism 160 that are used for sludge dewatering are delivered to dewatering unit 115 (mud density is 20000mg/l) with mud from the mixed flocculation jar.That is to say that mud/supernatant liquor tripping device and unloading mechanism 160 are 1.25m with flow automatically 3The sludge dewatering of/hr makes mud with constant rate 50kgds/hr (5m 3/ h), density 20000mg/l is delivered to dewatering unit 115.Like this, the mud density that is delivered to dewatering unit 115 can be controlled at the level that needs by the control dehydrating amount.In addition, by controlling the two stage pump 122 that mud is delivered to mixed flocculation jar 113, also can reach The above results, the quantity of dehydration keeps constant simultaneously.
Usually, how much the selection of flocculation agent and addition determines by mud flocculation test (being called the Jar test).Mud and flocculation agent mix finish after, if the throw out of flocculation state is good after tested with the supernatant liquor of extraction state, then mud flocculation result is better.In other words, the mud of above-mentioned state has lower moisture content, thereby it is less to separate water-mass density.In addition, measure the viscosity of above-mentioned state, and with its viscosity as suitable flocculation agent addition.
The reference value of viscosity is determined by the Jar test.
After adding suitable flocculation agent, water separates from mud and discharges by the gap, and throw out can not pass through the gap.Like this, the SS density that above-mentioned state unloads water is not down considered the height of mud density through being measured as 200mg/l-300mg/l.Yet if the addition of flocculation agent is on the low side, the density that unloads water increases sharply.
Therefore, in preferred unit of the present invention, the mud and the flocculation agent that are delivered to mixed flocculation jar 113 pass through the agitator mixed flocculation.Under above state, will be from flocculation mud isolating water-mass density, as the reference value of automatic mud/supernatant liquor tripping device and unloading mechanism 160 unloading water-mass densities.Afterwards, flocculation agent is added in the mud,, make and the unloading water SS density of measuring through second specific gravity hydrometer 175 approach reference value simultaneously by feedback control ratio restatement and flocculation agent pump (the two is interlocked with one another).When unloading water SS density is higher than reference value, add flocculation agent quantity in the mixed flocculation jar 113 than wherein mud density deficiency, should increase the flocculation agent addition in the case, regulate the unloading water-mass density and approach reference value.Then, the selection of flocculation agent is based upon on the predetermined SS density basis.In addition, when small amount of flocculant was added in the permission in being delivered to mixed flocculation jar 113, the previous flocculation agent that adds had exceeded reference value.Under above situation, excessive flocculation agent (for participating in the mud flocculation) is discharged with unloading water, when above viscosity is measured when being higher than with reference to viscosity through viscometer (its output signal representative measure viscosity), system will reduce the flocculation agent consumption, measure the SS density of unloading water simultaneously, make it be no more than density reference value permissible error scope.Like this, the present invention regulates the medicine of the also adding set of sludge treating system automatically.
As mentioned above, can control the addition and the mud density of flocculation agent automatically according to mud concentration process of the present invention and system, mud in the mixed flocculation jar with the flocculation agent mixed flocculation, make water from flocculation mud, break away from and directly from the mixed flocculation jar, discharge.In the mud concentration process, the amount of control separation of supernatant keeps transferring to the throw out density constant of dewatering unit with this.Like this, dewatering unit stably operable.
In addition, through measuring the density of unloading water from automatic mud/supernatant liquor tripping device and unloading mechanism (being installed in the mixed flocculation jar), can control the addition of flocculation agent automatically.Like this, sludge treatment efficient improves.The addition of flocculation agent reduces in high-density or the low density mud, thereby has reduced the consumption of pharmaceutical chemicals.
The automatization of mud concentration process and system has reduced the labor force.In addition, be different from conventional procedure and system, water is from the mixed flocculation jar, rather than unloads in the dewatering unit.Like this, the load of dewatering unit reduces, and has improved sludge dewatering efficient.
Although preferred unit of the present invention is illustrated elaboration, skilled operators can be carried out possible improvement, compound and alternative under spirit and range of condition in attached explanation.

Claims (13)

1. mud concentration process, use following equipment: sequence arrangement settling tank, mud hold tank, coagulating agent dissolving vessel, mixed flocculation jar and dewatering unit, process may further comprise the steps: sedimentary mud in the settling tank is delivered to the mud hold tank; The mud that stores in the mud hold tank is delivered to the mixed flocculation jar; From the coagulating agent dissolving vessel, be added into coagulating agent in the mixed flocculation jar; Mud is mixed in the mixed flocculation jar with coagulating agent and form throw out and supernatant liquor by agitator; Throw out is delivered to the dewatering unit dehydration, and wherein flocculation agent and supernatant liquor are controlled in the mixed flocculation jar, and the control discharging quantity also keeps constant density, and supernatant liquor is recycled to the settling tank by the water shoot that extends out from the mixed flocculation jar.
2. mud concentration process as claimed in claim 1, it is characterized by: the supernatant liquor that from the mixed flocculation jar, unloads through water shoot, by the operation of the ON/OFF on the valve that is installed in water shoot middle part control, it is based upon on the supernatant liquor density of measuring by second specific gravity hydrometer and second under meter (being installed in the water shoot middle part) and flow basis.Simultaneously, control is added into coagulating agent quantity the mixed flocculation jar from the coagulating agent dissolving vessel, thereby final control transmission is to the mud density of dewatering unit.
3. mud concentration process as claimed in claim 1 is characterized by: the amount of sludge that is delivered to the mixed flocculation jar from the mud hold tank is controlled by pump, and this pump is installed on the mud transmission pipeline that connects mud hold tank and mixed flocculation jar.With this understanding, can be consistent by water shoot unloading and the supernatant liquor quantity that is recycled to settling tank.
4. mud thickening equipment, comprise: settling tank, the mud hold tank, the coagulating agent dissolving vessel, mixed flocculation jar and dewatering unit, first transmission pipeline that connects settling tank and mud hold tank, second transmission pipeline that connects mud hold tank and mixed flocculation jar, be installed in the two stage pump and first specific gravity hydrometer at second transmission pipeline middle part, the 4th transmission pipeline that connects coagulating agent dissolving vessel and mixed flocculation jar, the 5th transmission pipeline that connects coagulating agent dissolving vessel and dewatering unit, and be installed in second transmission pipeline middle part, first specific gravity hydrometer, wherein mixed flocculation is canned is furnished with automatic mud/supernatant liquor tripping device and unloading mechanism, this device mixes mud by agitator with coagulating agent, it is delivered to the mixed flocculation jar from mud hold tank and coagulating agent dissolving vessel respectively, produce throw out and it is delivered to dewatering unit, and will from throw out, discharge by isolating supernatant liquor.
5. mud thickening equipment as claimed in claim 4 is characterized by: mud/supernatant liquor tripping device and unloading mechanism comprise automatically: outer tube, and it has defined first space; Extend out to the throw out unloading pipe of predetermined length from the top of outer tube; Extend to the mud source line and the coagulating agent source line of predetermined length from outer sleeve bottom; Vertically be installed on the main shaft at automatic mud/supernatant liquor tripping device and unloading mechanism center; Be installed on the engine of main shaft upper end; A top disk, one group of movable disc and one group of static disk, it is installed around main shaft; A cylindrical support structure is installed below revolving bar, the top disk, movable disc, static disk and cylindrical support structure are installed as a whole, form a screen type structure, and it has defined second space; Water unloading pipeline extends out to predetermined length from the edge of lower support structure along radial direction, passes first space and outer tube and protrudes the outside, and be connected (water shoot is installed in the mixed flocculation pot bottom) with water shoot.
6. mud thickening equipment as claimed in claim 5, it is characterized by: the leaf paddle stirrer is installed on the main shaft, and it comprises two vertical straight oars, and it is the telescopic longitudinal extension outside, the horizon bar that connects the straight oar upper end of hanging down is installed on the main shaft, supports vertical straight oar with this.The top disk of screen type structure, movable disc and static disk are installed on agitator inside, agitator is installed in (the two is connected as a single entity at the main shaft middle part) on the main shaft by horizon bar, so when main axis rotation, agitator is done in the same way rotation along the main axis rotation direction, and with mud and coagulating agent at the first space mixed flocculation.
7. mud thickening equipment as claimed in claim 6 is characterized by: in the internal space of agitator, revolving bar is installed and is connected as a single entity with main shaft 165, it comprises a vertical rod, telescopic longitudinal extension outside; Horizon bar, top and lower end horizontal-extending from vertical rod, movable disc and static disk are vertically alternately installed, separate by the one group of dividing plate that is installed on therebetween each other, install one group in the inner radial surface of each static disk and connect projection, and be equipped with a pin hole at the middle part of each, by installing movable disc and static disk as a whole: one group of joint nut with lower device, one group of connection pin that passes pin hole on the disk of top, pin hole between dividing plate and the static disk defines an interval between each movable disc and the static disk.
8. mud thickening equipment as claimed in claim 7, it is characterized by: the radially-outer surface of each movable disc is equipped with annular and connects projection, and the vertical rod of revolving bar inserts by top hole, when main axis rotation, movable disc is along with the vertical rod of revolving bar, around main axis rotation, rely on the vertical rod (annular projection that inserts movable disc installs) of revolving bar (with main axis rotation) in some sense.Like this, the vertical rod of revolving bar (with main axis rotation) contacts with the outside surface of static disk, can remove the throw out on movable disc and the static disk, thereby has prevented that the gap between movable disc and the static disk from being blocked by throw out.
9. mud thickening equipment as claimed in claim 4 is characterized by: mud/supernatant liquor tripping device and unloading mechanism comprise automatically: outer tube, and it has defined first space; Extend out to the supernatant liquor unloading pipe of predetermined length from the bottom of outer tube; Vertically be installed on the main shaft at automatic mud/supernatant liquor tripping device and unloading mechanism center; Be installed on the engine of main shaft upper end; The upper support structure that top and the bottom are open, one group of movable disc and one group of static disk, it is installed around main shaft; A cylindrical support structure is installed below revolving bar, the top disk, movable disc, static disk and cylindrical support structure are installed as a whole, form a screen type structure, and it has defined second space and has had predetermined gap (G); The unloading waterpipe extends out to predetermined length from the edge of lower support structure along radial direction, and throw out unloading pipeline radially extends from upper support structure limit wall, passes first space and outer tube and links to each other with the outside; Mud source line and coagulating agent source line all stretch out from the bottom of lower support structure.
10. mud thickening equipment as claimed in claim 9, it is characterized by: the outerface of spindle is equipped with screw, itself and main shaft are an integral body in some sense, and, when the spiral type main axis rotation, enter second spatial mud and the coagulating agent by mud source line and coagulating agent source line respectively, by the screw mixing and the flocculation of main shaft.
11. mud thickening equipment as claimed in claim 10 is characterized by: movable disc and static disk vertically alternately are installed on the main shaft, separate by the one group of dividing plate that is installed on therebetween each other; The inner radial surface of each static disk 167a is installed one group and is connected projection, and is equipped with a pin hole at the middle part of each; By installing movable disc and static disk as a whole: one group of joint nut with lower device, one group of connection pin that passes pin hole on the disk of top, pin hole between dividing plate and the static disk, by the main shaft screw threaded end, movable disc is rotated and fluctuation at centrifugal direction with respect to static disk, thereby has had automatic cleaning function.
12. mud thickening equipment as claimed in claim 11, it is characterized by: in the internal space of screen construction, revolving bar is installed on main shaft, revolving bar comprises a vertical rod, extend along the parallel main axis direction, a water beetle bar from the top and the lower end horizontal-extending of vertical rod, supports vertical rod and is installed on the main shaft with this; Upper support structure, movable disc and static disk are connected to each other to integral body, and the vertical rod of revolving bar is positioned this whole inside.
13. mud thickening equipment as claimed in claim 11 is characterized by: the inner radial surface of movable disc is installed one group of annular projection; Revolving bar is installed on the internal space of screen construction, connect into integral body with main shaft, it comprises a vertical rod, extend along the parallel main axis direction, a horizon bar is from the top and the lower end horizontal-extending of vertical rod, support vertical rod and be installed on the main shaft with this, upper support structure, movable disc and static disk are connected to each other to integral body, and the vertical rod of revolving bar inserts by the hole of movable disc annular projection.
CNB2004800097374A 2003-04-11 2004-03-30 Automatic sludge/supernatant separation and unloading device and sludge concentration system using same Expired - Fee Related CN100531852C (en)

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