CN102350099B - Oscillatory type sewage sedimentation basin and operation method thereof - Google Patents

Abstract

Provided is an oscillatory type sewage sedimentation basin, which utilizes a tilting system to tilt a movable basin, so as to generate gradient tangential deformation and resonance on raw water, promote a flocculation reaction and improve sewage treating effect, and an operation method thereof. The movable sedimentation basin is jointed with a pedestal hinge and can tilt around the hinge under a tilting operation of the tilting system. When sewage reaches a destabilization critical state, the tilting mechanism is started to tilt the movable basin to generate gradient tangential deformation on the raw water and promote the flocculation reaction. A basin tilting period is controlled to generate resonance oscillation on the raw water. The resonance promotes fully conduction of the flocculation reaction, so as to purify the raw water repeatedly, separate the settlement thoroughly and reduce suspensions. The settlement progress consumes a short time and energy, has good effect and low costs and is green, environment-friendly and easily operated.

Description

Oscillatory type sewage sedimentation tank and method of operating thereof

Technical field

The present invention relates to a kind of precipitation process can accelerated in sewage disposal, clarification water body, improve Oscillatory type sewage sedimentation tank and the method for operating thereof of wastewater treatment efficiency.

Background technology

In recent years, China's rapid economic development, urban wastewater discharge continued to increase, and Urban Water Environment is subject to severe contamination, and effluent problem has been the severe environmental protection of China one and economic problems.Because cost of sewage disposal is high, financial input is hard to carry on, and make wastewater treatment in China rate very low, the cost of sewage disposal and treatment effeciency greatly constrain the development of sewage disposal industry.Therefore, research and development cost is low, and the sewage treatment technique that speed is fast, efficiency is high, new equipment are the developing direction of sewage disposal industry.

Sedimentation basin is the process structures utilizing gravitational settling effect to be removed from water by suspended particulate large for density ratio water, is one of most widely used processing unit in sewage disposal, can be used for the operation such as post processing and advanced treating of sewage disposal, biological treatment.But natural sedimentation is not only chronic, also there is thick and heavy precipitation blocking zone in usual water body, suspension is many, water body chaos, so static sedimentation pond has floor space large, and basin's effective volume is little, and spoil disposal difficulty, the shortcomings such as treatment effeciency is low.How to make full use of natural sedimentation, shorten its precipitation clarification time, improve purifying rate.

Summary of the invention

The present invention changes tradition precipitation construction and maintains static, passively can only realize gravitational settling, precipitation blocking zone cannot be eliminated, the static mode of inefficiency, connects movable sedimentation basin body with base hinge, utilizes tilting system to fascinate active pool body, make the tangential deformation of former water generation gradient, promote that wadding core contacts with each other, collides, sticks, is polymerized, form closely knit flco and be separated with water, make former water be able to defecate and purify.

Fascinating the cycle by controlling pond body, making pond body cycle of fascinating consistent with the natural period of oscillation of Chi Zhongyuanshui, making former water generation resonance oscillations.The tangential deformation of gradient that the former water that resonates produces is maximum, and velocity gradient is also larger, and particles collision number of times is more.Vibration makes positive and negative both direction that equicohesive flocculation reaction effect can occur; The number of oscillation is more, and the time is longer, and flocculation reaction number of times is more, reacts more abundant.Oscillation action makes former water just repeatedly be purified, and sedimentation separation is thorough, and suspension reduces greatly.

The hydraulic action of the tangential deformation generation of gradient of former water, have also been changed coherent condition and the CONCENTRATION DISTRIBUTION of wadding core simultaneously, wadding cuclear density in local is increased, spacing reduces, make the sticking of the wadding core of more, critical condition, subcritical state, be cross-linked, coalescent reaction, form the flco of large scale, greatly quality and sedimentation; And the net for catching fish or birds volume of large scale floc sedimentation sweeps effect, greatly reduce the suspension in water body, sewage purification is thorough, and water body is clarified.

The technical solution adopted for the present invention to solve the technical problems:

Tilting type sewage accelerated sedimentation tank, is characterized in that: movable sedimentation basin body connects with base hinge, is connected with some groups of tilting systems simultaneously.Tilting system is no less than one group, must have more than one or one equipment that fascinates in one group; Movable sedimentation basin body, under the operation of fascinating of tilting system, can to fascinate certain angle around hinge.

Hinge is positioned on the center of gravity line of active pool body.The weight of main supporting pond body, position is bottom the body of pond, or top, or any height and position of center of gravity line upper pool body.

Hinge is positioned at the side of active pool body.

2 groups of tilting systems, pond body center of gravity line bilateral symmetry distribution, fascinate drive link respectively with pond body chain connection.This design can make drive link stroke shorten and obtain the gap tilt effect of wide-angle, realizes resonance.

The method of operating of oscillatory type sewage sedimentation acceleration basin, is characterized in that: the method comprises the steps:

(1) by pond body and former water horizontal rest some time, the time is not shorter than 5 minutes, eliminates wave or the sinuous flow of former water;

(2) pond body fascinates to side with certain speed by tilting system, reaches set angle angle value of fascinating; Oppositely fascinated by pond body with certain speed immediately, turning angle also must reach certain angle value;

(3) fascinate cycle of pond body of tilting system is consistent with the natural period of oscillation of Chi Zhongyuanshui;

(4) fascinate pond body several times, and number of times is no less than once, and then, tilting system is by pond body horizontal rest.

Above step intermittently operates repeatedly.

The invention has the beneficial effects as follows, free sedimentation, flocculation sediment and group shorten dramatically the sedimentation time, and sewage treating efficiency improves; Eliminate precipitation blocking zone, improve clarifying effect, water outlet ss suspended solid reduces greatly, and water body is made a clear distinction between good and evil, and namely primary sedimentation process can reach compression precipitating effect; The configuration of mud scraper can be reduced, reduce acquisition cost; Be easy to operation control, obtain water body resonance effect, energy-efficient, simple.

Accompanying drawing explanation

Below in conjunction with drawings and Examples, the present invention is further described.

The transverse sectional view of Fig. 1 to be tilting system of the present invention be hydraulic pressure tilting system.

Fig. 2 is the B-B longitudinal sectional view of Fig. 1.

In figure: 1. active pool body 2. sewage 3. baffle plate 4. deep floor 5. fixed hinge

6. hinge 7. hydraulic mechanism 8. hinge 9. fixed pedestal 10. precipitates dirt

11. valve 12. intake chambers 13. flood hole 14. stores bucket 15. discharge pipeline

16. apopore 17. water-supply-pipe 18. handles.

Detailed description of the invention

In the embodiment shown in fig. 1, be provided with hinge and be connected with fixed pedestal bottom the center of gravity line of active pool body, the supporting hinge left and right sides, two groups of hydraulic pressure tilting systems are symmetrical, their hydraulic stem respectively with pond body chain connection.

After former water injects, by pond body and former water horizontal rest some time, to eliminate the wave or sinuous flow that produce when former water enters pond.

When former water sinuous flow is eliminated, and when water-borne glue body reaches de-steady critical condition, start hydraulic pressure tilting system, left and right sides hydraulic stem replaces move toward one another, is fascinated by pond body with certain speed to side, reaches set angle angle value of fascinating; Oppositely fascinated by pond body with certain speed immediately, the cycle of the pond body that fascinates is consistent with the natural period of oscillation of Chi Zhongyuanshui; Fascinate after pond body several times (number of times is no less than once), by pond body horizontal rest.

Because pond body fascinates, former water is with the motion of pond body, and produce the tangential deformation of gradient, in the same time, the shear amount of each water layer is unequal, and the rate of deformation between water layer is not identical yet, produces relative motion between water layer.

Suspension wadding core between same water layer is with water sports, and suffered by different scale particle, hydraulic resistance is different, so the particle emission rate between different scale is poor.Fireballing wadding core catches up with slow-footed wadding core, comes in contact collision, is merged into larger wadding grain.

Some small-sized wadding core, their movement velocitys are the fastest, and core contact-impact chance of also not wadding a quilt with cotton with large scale on the way, they take the lead in moving near pool wall.Hinder by pool wall boundary layer fluid viscous effects and pool wall shape, the border gradually near pool wall is assembled, and wadding cuclear density improves gradually, and spacing is more and more less.Wadding core is assembled, and density improves, and spacing reduces, and what favourable wadding was internuclear sticks, crosslinked, coalescent formation large scale, large quality, firm, closely knit big flocculating body and precipitating.

What finally arrive is large-sized wadding grain, and it has huge surface area, is caught by remaining gathering micelle net, rolls up and sweep the closely knit big flocculating body of formation, and precipitate.

There is speed difference in adjacent water layer, the particle speed of a upper water layer is fast, and their swept aspects, are easy to catch the particle that in lower floor, movement velocity is slow, are combined into large wadding grain.

No matter wad a quilt with cotton a size, speed, under the acting in conjunction of water body shear action and gravity, is assembled to body both sides, pond lower motion by pool center gradually.Near pool wall, borderline region is the main region accelerating precipitation formation.

Precipitation blocking zone, aerosol density is large, and viscosity is large, and the mutual interference effect of suspended particulate increases, particle be subject in water gravity, buoyancy and water resistance, the mutual interference drag of particle balanced action, subsidence velocity is very slow.

When the tangential deformation of water body causes the shear effect between water layer, tangentially relative motion between particle, balance structure factor changes, and retardance balancing network is sheared destruction, causes vertical and originally balances caving in of constructive system.Upper strata caves in the downward ballistic motion of floc sedimentation, and micelle is enlisted the services of in winding on the way, is formed larger, more real flco.Cave in the impact of material, squeezing action, interaction particle intermediate gap liquid is extruded interface, and solid particle group is concentrated.

Consistent with the natural period of oscillation of Chi Zhongyuanshui when fascinate cycle of pond body of tilting system; Former water resonates, even if stop fascinating pond body immediately.But due to the resonance effects of former water, water body still left and right iterative cycles vibration, clashes into pool wall.Resonate former water constantly phugoid oscillation, produces the tangential deformation of gradient in the lateral direction.Resonance water body wave amplitude is high, and distortion is large, and the mutual shear action between water layer is also larger, is more conducive to the carrying out of flocculation reaction.The resonance water body oscillatory extinction time is longer, and the number of oscillation the more, carry out just more abundant by flocculation reaction, and flocculation reaction is just more thorough, and suspended substance removal obtains the more, and water body is also just clean and clear.Therefore oscillation action makes former water just repeatedly be purified, suspension reduces greatly.

Constantly along the relative motion of tangent plane left and right between particle, block interim balance and be constantly sheared destruction, vertical constructive system constantly caves in, and solid particle group is also constantly aggregated concentrated.

Pond bottom precipitation flco general size is large, more firm, closely knit.Reciprocating vibration causes the rate of flow of fluid streaming flco large, produces whirlpool in flco both sides.Whirlpool, to the Involving velocity of adjacent fluid, have accumulated a large amount of wadding core in vortex core.Wadding cuclear density increases, and adds the contact, crosslinked and coalescent of wadding core at vortex core, impels the fluid suspended thing in flco both sides constantly to deposit, form pond bed-sit line shape deposition.Arranging at the bottom of pond at the bottom of protruding structure of grid or pond is wave structure, all can strengthen and stream vortex action, accelerates sedimentation of suspension.

There is storage bucket at the bottom of pond, at the bottom of pond, be provided with the gradient along its length, tilt to storage bucket, be beneficial to sediment and collect to the slippage of storage bucket gradually.

The floc sedimentation sunk to the bottom is under tangential hydraulic action, and left and right swings repeatedly, and the slip viscous drag of its underpart reduces greatly.In periodically swinging, downslide component constantly drives flco downward sliding motion along inclined-plane, is finally slipped to the storage bucket of surface bottom.

When dirt is separated and be compressed at the bottom of pond, water body becomes clean and clear, and just can release clear water by toppling over or opening apopore, mud enters sludge-tank, and the pond body soared just can carry out new Processing tasks.

Claims (2)

1. a method of operating for oscillatory type sewage sedimentation acceleration basin, is characterized in that: the method comprises the steps:

(1) by pond body and former water horizontal rest, time of repose is not shorter than 5 minutes, eliminates wave or the sinuous flow of former water;

(2) pond body fascinates to side by tilting equipment, reaches set angle angle value of fascinating; Oppositely fascinate immediately, turning angle also must reach certain angle value;

(3) fascinate cycle of pond body of tilting equipment is consistent with the natural period of oscillation of Chi Zhongyuanshui;

(4) fascinate pond body number of times at least one times or once more than, then, tilting equipment is by pond body horizontal rest;

Described oscillatory type sewage sedimentation acceleration basin is: movable sedimentation basin body connects with base hinge, simultaneously with more than one or one equipment connection that fascinates; Movable sedimentation basin body, under the operation of fascinating of the equipment of fascinating, can to fascinate certain angle around hinge.

2. method of operating as claimed in claim 1, is characterized in that: intermittently repeatedly operate.