CN201240990Y

CN201240990Y - Floc concentrating apparatus in sludge treatment

Info

Publication number: CN201240990Y
Application number: CNU2008201201629U
Authority: CN
Inventors: 黄海
Original assignee: ZHEJIANG KCLEAR ENVIRONMENTAL PROTECTION EQUIPMENT CO Ltd
Current assignee: ZHEJIANG KCLEAR ENVIRONMENTAL PROTECTION EQUIPMENT CO Ltd
Priority date: 2008-06-23
Filing date: 2008-06-23
Publication date: 2009-05-20
Anticipated expiration: 2018-06-23

Abstract

The utility model provides a flocculating substance concentrating device in the sludge treatment, and the device is provided with a groove [8]; a stirring mill [3] is arranged on the groove; a material discharging hole [6] is arranged at the bottom of the groove; a jacket [4] is arranged on the periphery of the groove; filtering holes are arranged on a separating wall [2] which is arranged between the groove and the jacket; and a liquid discharging outlet [7] is arranged at the lower part of the jacket. The flocculating substance concentrating device in the sludge treatment adds the jacket on the periphery of the stirring groove, and arranges the filtering holes on the separating wall between the groove and the jacket; and the separating wall is partially the filtering screen. When operating, the concentration of the flocculating substance in the material in the stirring groove can be accelerated to be increased by filtering the liquid while the flocculating substance settles at the same time; through practical measuring, the solid concentration can reach 2% to 5% in two minutes; compared with prior art, the flocculating substance concentration can be greatly improved without affecting the stirring effect, the load of the device which is used for dewatering operation can be reduced, so the same device can treat more sludge.

Description

Throw out concentrating unit in the sludge treatment

Technical field the utility model relates to throw out concentrating unit in a kind of sludge treatment, belongs to the processing technology field of mud in the Chemo-Therapy gold.

Background technology settled mud in sewage treatment process need dewater, to reduce the final amount of handling such as landfill, sintering.Flocculate to make things convenient for dehydration operation and need that before sludge dewatering mud is added flocculation agent, adding flocculation agent makes throwing out complete after poly-group after mixing again, before dehydration, also to carry out concentrating of certain hour so that flocs unit is solid, so that in dehydration operation, be difficult for fragmentation, in order to dehydration.The so-called meaning that two aspects are arranged that concentrates, the one, the contraction of flocs unit itself and improve density, another is sedimentation and make the ratio rising of flocs unit in lower floor's material, these all favourable raising dewatering efficiencies.This concentration operation normally stirs one and carries out in the subsider, and the purpose of stirring is to make in the system everywhere that flocs unit evenly is beneficial to filter dehydration in size, density.But in the past concentrating unit not only have high input and also efficient poor, the enrichment factor that most importantly only depends on sedimentation and improved is not high enough.

Summary of the invention is at above-mentioned deficiency, and the utility model is exactly to propose throw out concentrating unit in the sludge treatment that a kind of not single dependence sedimentation improves flocs unit concentration.

Throw out concentrating unit in the sludge treatment that the utility model provides has a groove, and stirrer is installed on the groove, and bottom land has discharge port, and the peripheral chuck in addition of groove has filter opening on the dividing wall between groove and the chuck, and the liquid phase discharge outlet is arranged at the chuck bottom.

Throw out concentrating unit in the sludge treatment that the utility model provides has added a chuck in the steel basin periphery, and the dividing wall between groove and chuck has filter opening, and promptly this partition wall section is a filter screen.In when operation, the flocs unit in the material in the steel basin is increased in the settled concentration of utilizing the elimination liquid phase simultaneously and quickening flocs unit, reach 2～5% through surveying 2 minutes solids concns.Compared with prior art, can the concentration of flocs unit be had a very significant increase, and the machine utilization that carries out dewatering operation simultaneously also can reduce, promptly same equipment can be handled more mud.

Throw out concentrating unit in the sludge treatment that the utility model provides, said groove are cylinder grooves, the dividing wall between groove and the chuck, its top is the cylindrical straight wall, the bottom is a conical slant, the filter opening part is arranged on Zhi Bi top on the dividing wall, and promptly the Zhi Bi top of this dividing wall is filter screen.There is the mud of comparatively dense the system middle and lower part, so offering the filter opening effect not quite also easily stops up, mud is transported to dewatering unit and is also needed certain water content and certain flip angle in the steel basin in addition, so only be made as filter screen on Zhi Bi top and make its underpart not have filter opening and to be funnel-form more suitable.

Throw out concentrating unit in the sludge treatment that the utility model provides, said the height of filter opening part and the ratio of groove diameter are arranged is 0.5-3:1.

Throw out concentrating unit in the sludge treatment that the utility model provides, said filter opening are that wherein the slit of the aperture of filter screen or grating is 0.3～0.5mm by punch on the sheet material filter screen that constitutes or the grating that is pieced together mutually by grizzly bar,

Throw out concentrating unit in the sludge treatment that the utility model provides, the stirring rake of said stirrer is upright and press the straight oar shape of bottom land bending along cell wall, the upper end is installed on the stir shaft through suspended wall, the stirring rake linear velocity is 0.5～4m/s, its stirring efficiency is improved, make the bottom be difficult for building up to become to stick together and stop up outlet.

Throw out concentrating unit in the sludge treatment that the utility model provides has also been installed axial straight oar stirring rake in the mid-way of said stirrer cantilever, also bending can be arranged bottom.Said straight oar is meant that whole stirring rake is straight line section bar structure, its be consistent along the cross section on the collinear different positions (as bending, bending part is the crossing form of two straight oars).

Description of drawings Fig. 1 is the part sectioned view of the utility model one embodiment, among the figure: 1-concentrating unit tank body, the 2-grating, the 3-stirring rake, the 4-liquid phase region, 5-steel basin base plate, 6-concentrate the outlet of mud oar, the outlet of 7-liquid phase, 8-enrichment region;

Fig. 2 be among Fig. 1 A-A to sectional view, among the figure: the 1-device body, the 2-grating, the 3-stirring rake, 4-liquid phase region, 5-steel basin base plate, 6-concentrate the outlet of mud oar, the outlet of 7-liquid phase.

Embodiment has a concentrating unit as shown in Figure 1, 2, is a circular tank 1, is right cylinder lower seal elipse head shape, the oval lid of loam cake.Stirrer wherein is installed.Jar outer ring is a chuck, has one it is divided into the dividing walls of inside and outside two circles in the promptly said tank body, dividing wall with interior be enrichment region 8, be liquid phase region 4 beyond the dividing wall.Enrichment region is that the conical base plate 5 with the cylindrical tube on top and bottom constitutes, and concentrated mud outlet 6 is arranged on the awl point of bottom, and an outlet is also arranged at the liquid phase region bottom, is the outlet 7 of the water that leached.The top of the cylindrical portions may of said dividing wall is the grating 2 that constitutes with grizzly bar, and the slit is 0.5mm, and the grating height is 3/4 of an enrichment region diameter.Stirring rake 3 is arranged in enrichment region, stirring rake totally 4 be the straight-bar that the T-shaped cross section is arranged, vertically be installed on according on two cantilevers of cross, cantilever is perpendicular to stir shaft.2 stirring rakes are installed on the cantilever near dividing wall, and 2 stirring rakes are installed on another cantilever in nearly 1/2 radius in addition, turn back according to conical base plate in the lower end.Stirring rake maximum line velocity 2m/s.

Claims

1, throw out concentrating unit in a kind of sludge treatment has a groove, and stirrer is installed on the groove, and bottom land has discharge port, it is characterized in that the peripheral chuck in addition of groove, on the dividing wall between groove and the chuck filter opening is arranged, and the liquid phase discharge outlet is arranged at the chuck bottom.

2, throw out concentrating unit in the sludge treatment as claimed in claim 1 is characterized in that said groove is a cylinder groove, the dividing wall between groove and the chuck, and its top is the cylindrical straight wall, the bottom is a conical slant, the filter opening part is arranged on Zhi Bi top on the dividing wall.

3, throw out concentrating unit in the sludge treatment as claimed in claim 1 or 2 is characterized in that said the height of filter opening part and the ratio of groove diameter are arranged is 0.5-3:1.

4,, it is characterized in that said filter opening is by punch on the sheet material filter screen that constitutes or the grating that is pieced together mutually by grizzly bar as throw out concentrating unit in claim 1 or the 2 or 3 described sludge treatment.

5, throw out concentrating unit in the sludge treatment as claimed in claim 4 is characterized in that the aperture of said filter screen or the slit of grating are 0.3～0.5mm,

6, throw out concentrating unit in the sludge treatment as claimed in claim 1, the stirring rake that it is characterized in that said stirrer are upright and press the straight oar shape of bottom land bending along cell wall, and the upper end is installed on the stir shaft through suspended wall, and the stirring rake linear velocity is 0.5～4m/s.

7, as throw out concentrating unit in claim 1 or the 6 described sludge treatment, it is characterized in that axial straight oar stirring rake also being installed in the mid-way of said stirrer cantilever, bending is also arranged bottom.