CN1488589A

CN1488589A - Mud-scraping suction dredge and solid-liquid separating process thereof

Info

Publication number: CN1488589A
Application number: CNA03140233XA
Authority: CN
Inventors: 丁扣林
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-08-21
Filing date: 2003-08-21
Publication date: 2004-04-14
Anticipated expiration: 2023-08-21
Also published as: CN1201843C

Abstract

The invention is a new suction mud scraper and solid-liquid separating craft, it uses current water process craft and sets a new suction mud scraper in the secondary depositing pool, the device comprises independent suction device and scraping device. It can separate active mud and inert mud through a mud discharging pipe in a short time. The invention can enhance the biochemical reaction quantity, makes the mud has high activity, maintains the SVI value in aeration basin in reasonable range, and improves the depositing performance of active mud.

Description

A kind of novel scraping and sucking machine and solid-liquid separation process thereof

Technical field

The present invention relates to a kind of novel scraping and sucking machine and solid-liquid separation process thereof.

Background technology

In the existing waste disposal plant, how mud scraper and suction dredger are installed and used separately, increase running cost, and need take bigger space;

In the present urban sewage treatment process, mostly selected suction dredger, mud scraper etc. are mud is all siphoned away or blows off in the radial-flow sedimentation tank, by processing requirement a part are back to the aeration tank again, and another part carries out sludge dewatering.Above-mentioned technology all can not effectively be separated active sludge with inertia mud preferably, does not reach environmental protection requirement, and does not give full play to the effect of active sludge.

Summary of the invention

For addressing the above problem, the invention provides and a kind ofly active sludge and inertia mud can be carried out effectively isolating novel scraping and sucking machine.

Another object of the present invention provides a kind ofly can carry out the solid-liquid in the sewage effectively isolating a kind of solid-liquid separation novel process.

Novel scraping and sucking machine of the present invention includes the settling tank of a cylinder funnel type, the external side in pond is distributed with mud-collecting well of active sludge and inertia mud mud-collecting well, be characterized in that described settling tank is provided with a resting support that rotates around the center support of hollow, this resting support one side stationary distribution has a plurality of and sludge pipe to join and extends near the suction mud of settling tank bottom chews, the opposite side of resting support is hung with many hoist cables, the hoist cable end is connected with the cleaning shoe that is arranged at the settling tank bottom, and the top of settling tank center support is provided with the mud-collecting slot that is connected with sludge pipe; Shore pipe one end is communicated with mud-collecting slot, and the other end is connected with mud-collecting well of active sludge; Settling tank bottom centre zone is the spill bucket, and shore pipe one end and bucket join, and the other end communicates with the mud-collecting well of inert mud;

Above-mentioned described settling tank bottom is connected to water inlet pipe, and the outside of settling tank is provided with the water outlet water shoot.

Solid-liquid separation process concrete steps of the present invention are: after sewage is entered settling pit and carried out pre-treatment by grid, enter settling pit through sump pump, sewage enters oxidation pond behind preliminary sedimentation, oxidation pond is sent into sewage after treatment in the second pond, be provided with scraping and sucking machine in the second pond, scraping and sucking machine carries out effective separating treatment again to mud, be separated into active sludge and inertia mud, active sludge is delivered to mud-collecting well of active sludge through shore pipe by hydrostaticpressure, is back to oxidation pond through sludge reflux pump and carries out reuse; Inertia mud is transported to inertia mud mud-collecting well through shore pipe by hydrostaticpressure, concentrates outward transport after the dewatering unit dehydration.

Adopt technique scheme, because the mud that avales in the second pond has active sludge and inertia mud, the biomass height of active sludge, strong, the excellent adsorption of survival performance, organic pollutant in the water there is fractionation by adsorption ability preferably, and inertia mud mainly is the less inorganic components of biomass (claiming dead mud), its to organic pollutant absorption and capacity of decomposition a little less than, and there is difference in both settling velocity.Sewage through the guide shell radiant flux in the process of pond week water leg, the inertia sludge settling is fast, be deposited in the central zone of settling tank, and the active sludge settling velocity is slower, is deposited in the outer radiation zone in radial-flow sedimentation tank center 1/3rd; Novel scraping and sucking machine is at both sedimentation speed differences, chew and cleaning shoe by the suction mud that distributes on the resting support, active sludge is entered mud-collecting well of active sludge by sludge pipe through mud-collecting slot, and cleaning shoe is scraped the bucket that combines in the settling tank bottom with inertia mud, enters inertia mud mud-collecting well through shore pipe.

Adopted the solid-liquid separation process flow process that is provided with novel scraping and sucking machine, can improve the total amount of biochemical reactant greatly, make mud that higher activity be arranged, the SVI value in the reasonable scope in the maintenance aeration tank, obviously improve the settling property of active sludge, strengthened ability and the processing power of doing impact load, reduced the residence time of mud, thereby greatly reduce construction investment.

Description of drawings

Below in conjunction with accompanying drawing the utility model is described in further detail:

Fig. 1 is the cross-sectional view of novel scraping and sucking machine of the present invention;

Fig. 2 is the structural representation of overlooking direction of novel scraping and sucking machine of the present invention;

Fig. 3 is a solid-liquid separation process schema of the present invention;

Embodiment:

As Fig. 1, Fig. 2, novel scraping and sucking machine is made up of the settling tank 14 of a cylinder funnel type and the mud-collecting well of active sludge 1 and the inertia mud mud-collecting well 13 that are distributed in settling tank 14 both sides, be fixed with a resting support 15 around the axis rotation on the hollow centre bearing of settling tank 14, resting support 15 1 side stationary distribution have a plurality of and sludge pipe 4 to join and extend near the suction mud of settling tank 14 bottoms chews 3, the active sludge that is deposited at the bottom of the pond can be chewed 3 and sucks and be delivered in the mud-collecting slot 9 that is in center support top by sludge pipe 4 by inhaling mud, is entered in the mud-collecting well of active sludge 1 by the static pressure of shore pipe 7 by water again; The opposite side of resting support 15 is hung with many hoist cables 10, the end of hoist cable 10 is connected with the cleaning shoe 8 that is arranged at settling tank 14 bottoms, the inertia mud that cleaning shoe 8 constantly will comparatively fast be deposited at the bottom of the pond is concentrated the central zone of scraping to settling tank 14 bottoms, because central area is provided with the bucket 5 of spill, inertia mud is from the static pressure of bucket 5 by water, in shore pipe 11 enters inertia mud mud-collecting well 13; Water inlet pipe 2 is connected with the hollow space of settling tank 14 center supports, flows to into settling tank 14 precipitations by guide shell 6 spokes; The edge of settling tank 14 also is provided with water shoot 12.

When novel scraping and sucking machine uses, municipal effluent flows into guide shell 6 by water inlet pipe 2, flow into settling tank 14 by guide shell 6 again, inertia mud and active sludge in the settling tank sewage begins sedimentation regularly simultaneously, at this moment, connect power supply, make resting support 15 actions, resting support 15 drive inhale mud chew 3 and cleaning shoe 8 rotate around the central shaft of settling tank 14, suction mud chews 3 will precipitate slower active sludge suction, deliver to mud-collecting slot 9 along sludge pipe 4, enter in the mud-collecting well of active sludge 1 by shore pipe 7 again, thereby finish suction mud, the spoil disposal process of active sludge; Meanwhile, under the rotatablely moving of resting support 15, cleaning shoe 8 will precipitate faster that inertia mud scrapes, and progressively the sludge hopper 5 of central zone is concentrated at the bottom of the pond, in shore pipe 11 enters inertia mud mud-collecting well 13, thereby finish the process of the dirty scraping mud of inertia, collection mud, spoil disposal; Water shoot 12 effluxes the water outlet of post precipitation.

Shown in Figure 3, the processing step that adopts scraping and sucking machine to carry out the solid-liquid separatory is: sewage is promoted to settling pit by lift pump after the grid maker slagging-off, gravity flow enters anaerobic pond, Aerobic Pond then, gravity flow enters the second pond precipitation after anaerobism, aerobic treatment, its process is to flow into guide shell 6 by water inlet pipe 2, enter settling tank 14 precipitations again, the sedimentation speed of mud in precipitation process is different, constantly isolates active sludge and inertia mud; Be provided with scraping and sucking machine in the second pond, scraping and sucking machine is the center with the center support, make circumferential motion, in moving process, the slower active sludge of sedimentation speed is chewed 3 and is sucked by inhaling mud, flows into mud-collecting slots 9 through sludge pipe 4, by active sludge shore pipe 7 under the hydrostatic pressure of water, active sludge is entered in the mud-collecting well of active sludge 1, under the effect of sludge reflux pump, be back to the Aerobic Pond reuse; Scraped to matrix bucket 5 by cleaning shoe 8 and precipitate faster inertia mud, under the hydrostatic pressure of water, enter inertia mud mud-collecting well 13 by inertia mud shore pipe 11, inertia mud concentrates after the dewatering unit dehydration, and outward transport is handled; Water after second pond is handled effluxes after water shoot 12 enters sterilization pool, disinfects after being collected by pond week water leg.

Claims

1, a kind of novel scraping and sucking machine includes the settling tank (14) of a cylinder funnel type, and the external side in pond is distributed with mud-collecting well of active sludge (1) and inertia mud mud-collecting well (13), it is characterized in that:

A) described settling tank (14) is provided with a resting support (15) that rotates around center support, and there are mud-sucking device and Scraping device in this resting support (15) lower end independent suspension respectively;

B) described resting support (15) top that is positioned at central shaft is provided with guide shell (6), and mud-collecting slot (9) is located at guide shell (6) inner upper end;

2, according to the described a kind of novel scraping and sucking machine of claim 1, it is characterized in that

(a) described mud-sucking device comprises that a side stationary distribution of resting support (15) has a plurality of and sludge pipe (4) to join and extends near the suction mud of settling tank bottom and chews (3), sludge pipe (4) is connected with mud-collecting slot (9), shore pipe (7) one ends are communicated with mud-collecting slot (9), and the other end is connected with the mud-collecting well (1) of active sludge;

(b) described Scraping device comprises that the opposite side of resting support (15) is hung with many hoist cables (10), hoist cable (10) end is connected with the cleaning shoe (8) that is arranged at settling tank (14) bottom, settling tank (14) bottom centre zone is spill bucket (5), shore pipe (11) one ends and bucket (5) join, and the other end is connected with the mud-collecting well (13) of inert mud.

3, according to claim 1 or 2 described a kind of novel scraping and sucking machines, it is characterized in that: described active sludge shore pipe (7) is positioned on settling tank (15) axis, and inserts and extend to from the bottom of settling tank (1) and mud-collecting slot (9) joins; Water inlet pipe (2) is overlapped on the skin of shore pipe (7), and is connected with guide shell (6);

4, a kind of novel scraping and sucking machine according to claim 1 is characterized in that: guide shell (6) bottom is connected with settling tank (14), flows to water to settling tank (14) from water inlet pipe (2) spoke, and water shoot (12) is positioned at the outermost layer of settling tank (14).

5, a kind of novel scraping and sucking machine according to claim 1 is characterized in that: described suction mud is chewed (3) and is bell mouth shape, can hang 3～20 on the resting support (15).

6, a kind of solid-liquid separation process that utilizes the described novel scraping and sucking machine of claim 1 and adopt, it is characterized in that: the active sludge in the sewage effectively separates with inert mud, and concrete steps are:

After sewage enters settling pit and carries out pre-treatment by grid, enter anaerobic pond, oxidation pond through sump pump, sewage after oxidation pond is handled enters in the second pond, be provided with scraping and sucking machine in the second pond, scraping and sucking machine carries out effective separating treatment again to mud, be separated into active sludge and inertia mud, active sludge is collected the active sludge well through shore pipe, flow to the oxidation pond reuse by blowback again, inertia mud is collected the inertia sewer catch basin through shore pipe, concentrate after the dewatering unit dehydration concentrates to efflux again.