CN2928221Y

CN2928221Y - Hydrolysis acidifying reactor

Info

Publication number: CN2928221Y
Application number: CN200620074940.6U
Authority: CN
Inventors: 王洪春; 黄政新; 强绍杰; 鲁俊伦; 欧畅达
Original assignee: Jiangsu pengyao environmental engineering design institute; Yixing Hongyang New Environmental Technology Co Ltd; Jiangsu Pengyao Environment Engineering & Technology Research Center
Current assignee: JIANGSU PENYAO ENVIRONMENTAL ENGINEERING DESIGN INSTITUTE CO., LTD.
Priority date: 2006-07-18
Filing date: 2006-07-18
Publication date: 2007-08-01
Anticipated expiration: 2016-07-18

Abstract

The utility model relates to a hydrolyze acidifying reactor, which is characterized in that the reactor, is provided with an umbrella-shaped stir disk. The surface of the umbrella-shaped stir disk has a plurality of arc flow pull projecting reinforcements, and a current stabilizer is disposed under the fluid level in the reactor. Compared with the conventional technique, the umbrella-shaped stir disk can form even and omni-directional flow pull on the bottom portion of the reactor and an axial and circulating flow pull with excellent stirring effect, which makes full and complete contact and mixing of sewage water and sewage mud and strengthens mass transfer, thereby increasing the shock-proof elevating capacity. The omni-directional promotion under the bottom of the reactor without mixed flow dead corner or sledged deposition, the volume operating factor of the reactor can reach 100%, 10-20% higher than other hydrolyze acidify reactors. Power consumption in unit volume is small that only 2-3w/m<3> is needed in mixed flow. The upper current stabilizer can make turbulent mixing water body achieve self-propelling mud-water separation without an outlay mud-water dis-connecting gear or a mud reflux apparatus, thereby, volume and construction cost of the equipment are both reduced.

Description

Reactor for hydrolysis and acidification

Technical field

Utility model relates to a kind of reactor for hydrolysis and acidification, the reactor for hydrolysis and acidification of especially a kind of mud and sewage good mixing effect.

Technical background

In the sewage high concentration treatment process, often adopt reactor for hydrolysis and acidification as a kind of preprocessing means.And activated sludge and sewage mix and contacts quality in the reactor for hydrolysis and acidification, directly influence treatment effect and treatment effeciency, so people adopt variety of way, make that activated sludge as far as possible fully contacts with sewage in the hydrolysis reactor, and this is pursued by people.Hydrolysis reactor commonly used at present, stir type with regard to waterpower and mainly contain two big classes: a class such as up flow type sludge bed reactor, as described in Chinese patent CN03220510.4, CN200510123101.9, typical structure such as Fig. 1.Basic principle is that employing is arranged on the water-distributing device 2 of reactor 1 bottom, forms upwelling and hold (lifting) mud in reactor, to form stable dynamic mud bed, reaches mud and fully contacts with sewage; Another kind ofly be referred to as complete mixing reactor, typical structure such as Fig. 2, basic principle is, in reactor 1 bottom side agitator arm 4 is set, and forces to stir by impeller to make water body produce strong turbulent flow, reaches mud and fully contacts with sewage.

The former requires highly to water-distributing device, if water distribution is inhomogeneous and flow velocity is too high, low excessively, all can influences Sludge Bed layer thickness, uniformity and cause into water to penetrate the mud bed easily and produce short stream, channeling, reduces mud, water fully contacts; Cause short stream for avoiding into water to penetrate sludge blanket in the engineering, the general design of water distribution upflow velocity is lower, be difficult to hold up (suspension) more activated sludge so again, cause mud to concentrate in a large number in the bottom, central region mud rareness, the sludge blanket effective thickness is little, and concentration is not high, sewage tails off in high load region and activated sludge contact area, the time is short, sludge activity is low, and treatment effeciency reduces; Therefore, its stability and poor, not anti impulsion load to water quality and the unexpected variation of load adaptive capacity.The latter, impeller is forced to mix, and plug-flow intensity is inhomogeneous, is prone to short stream dead space, dead angle, has reduced utilization rate of tank volume; Strengthen stirring intensity, can cause mud again, need establish sedimentation basin 5 and mud return-flow system 6 in addition for this reason, increased equipment investment and volume with water outlet 3 outflows; In addition, the unit volume power consumption is big, generally needs 3-5w/m ³

Summary of the invention

The purpose of utility model is to overcome the deficiency of above-mentioned prior art, provides a kind of stirring waterpower fluidised form good, mud, water full contact, and no dead angle, and need not to add mud-water separation and reflux, the reactor for hydrolysis and acidification of low cost of manufacture.

The utility model purpose realizes that main the improvement is to adopt umbrella shape to stir disk, replaces bottom water distribution or blade to stir, and forms good, no dead angle hydraulic flow step response in reactor, realization the object of the invention.Specifically, the utility model reactor for hydrolysis and acidification comprises hydrolysis reactor and built-in mechanical stirring device, it is characterized in that said mechanical stirring device stirs disk for there is the umbrella shape of some arc plug-flow convex tendons on the surface, and there is constant-current stabilizer reactor liquid level below.

The said liquid level of utility model below constant-current stabilizer, its effect is to make the energy dissipating of the current of below vigorous agitation through constant-current stabilizer, muddy water is carried out rectification, form static relatively laminar condition above it, thereby activated sludge can effectively be sunk, guarantee low SS value in the water outlet, and constant-current stabilizer below sludge concentration in the reactor.Be that constant-current stabilizer is separated into stirring mixed flow contact zone and relative static mud-water separation district with reactor, guarantee the efficient operation of reactor.According to the constant-current stabilizer effect can be by straight tube, straight plate or inclined tube, swash plate is formed, and also can be one deck packing layer.Constant-current stabilizer among the present invention, through test think better employing the former, can obtain better effect, it highly is preferably 800-1200mm, caliber or distance between plates are preferably 80-150mm, are preferably 600-1000mm apart from liquid level.This scope is not accurate extreme value for the test adequate value, suitably departs to reach similar substantially effect yet.

Said stirring disk for alleviating own wt, reduces the running energy consumption, and a kind of umbrella body structure that adopts hollow that is preferably promptly has the umbrella cover layer as umbrella.During rotation, umbrella surface arc plug-flow convex tendon mainly plays horizontal plug-flow effect, and the umbrella shape cambered surface can form the plug-flow that circulates up and down, and both are in conjunction with having formed the bottom surface plug-flow and the plug-flow that circulates does not up and down have the dead angle stirring effect.Umbrella body baseplane is preferably apart from reactor bottom surface 600-1200mm, and is excessive apart from the bottom spacing, can cause the bottom stirring effect poor, increases the bottom sludgd deposition, influences treatment effect; Too small apart from the bottom spacing, can increase the consumption of rotating energy again, the waste electric energy.Equally, this distance value also is a kind of assay optimization value, but not accurate definite value.

The utility model reactor for hydrolysis and acidification, make the water body agitating device owing to adopt the surface to have the umbrella shape of arc plug-flow convex tendon to stir disk, and above the agitating device, below the liquid level constant-current stabilizer is set, reactor is had than prior art: the umbrella shape stirring disk generation end, push away and two kinds of mixing stirrings of circulation stirring up and down, mixing effect is good, can form uniform omnidirectional plug-flow at reactor bottom, and axial circulation plug-flow, sewage is fully mixed with mud to be contacted, strengthened mass transfer, thereby the anti impulsion load ability is enhanced; Bottom omnidirectional plug-flow, no mixed flow dead angle, no sludge settling, reactor volume utilization rate height can reach 100%, and treatment effect is good, can improve 10-20% than other reactor for hydrolysis and acidification.And the unit volume power consumption is little, and mixed flow only needs 2-3w/m ³The top constant-current stabilizer can make the turbulent mixture water body realize that muddy water separates voluntarily again, need not external device for separating mud and water, and the mud reflux, has reduced equipment volume and cost.

Below in conjunction with three specific embodiment, further specify utility model.

Description of drawings

Fig. 1 is a prior art up flow type reactor for hydrolysis and acidification typical structure schematic diagram.

Fig. 2 is the complete hybrid reactor for hydrolysis and acidification typical structure schematic diagram of prior art.

Fig. 3 is a utility model hydrolysis anaerobic reactor basic structure schematic diagram.

Fig. 4 stirs the disc structure schematic diagram for umbrella shape.

Fig. 5 is the second embodiment reactor for hydrolysis and acidification structural representation.

The specific embodiment

Embodiment 1: referring to Fig. 3, and 4, utility model reactor for hydrolysis and acidification, reactor 1 axially have the hollow umbrella body that extends from about the 800mm of bottom to stir disk 7, and the umbrella body stirs on the disk umbrella conical surface and is evenly distributed with eight arc plug-flow convex tendons 9 in the same way.To be provided with spacing be 100mm at the 800mm place under the reactor liquid level, highly is the constant-current stabilizer 8 that the straight tube of 800mm is formed.

Embodiment 2: referring to Fig. 5, as described above, dividing up and down in reactor, two layers (looking the situation of disposing of sewage also can be multilayer) is respectively arranged with umbrella body stirring disk 7.1 and top constant-current stabilizer 8.1; And the umbrella body stirs the constant-current stabilizer 8.2 of disk 7.2 and top.This structure helps forming the mud bed of phase-splitting, can further improve treatment effect and does the different process use.

Embodiment 3: as described above, can also be provided with three-phase separating device above the constant-current stabilizer, below the liquid level, can be used as anaerobic reactor.

In addition, constant-current stabilizer can also adopt straight plate or inclined tube, swash plate to form, and adopt other packing layers.

Claims

1, reactor for hydrolysis and acidification comprises hydrolysis reactor and built-in mechanical stirring device, it is characterized in that said mechanical stirring device stirs disk for there is the umbrella shape of some arc plug-flow convex tendons on the surface, and there is constant-current stabilizer reactor liquid level below.

2,, it is characterized in that said constant-current stabilizer is made up of straight tube, straight plate or inclined tube, swash plate according to the described reactor for hydrolysis and acidification of claim 1.

3, according to the described reactor for hydrolysis and acidification of claim 2, it is characterized in that said constant-current stabilizer height is 800-1200mm, caliber or distance between plates are 80-150mm.

4,, it is characterized in that said constant-current stabilizer 600-1000mm under the liquid level according to claim 1,2 or 3 described reactor for hydrolysis and acidification.

5,, it is characterized in that said stirring disk is a hollow umbrella body according to the described reactor for hydrolysis and acidification of claim 1.

6,, it is characterized in that said stirring disk bottom surface is apart from reactor bottom surface 600-1200mm according to claim 1 or 5 described reactor for hydrolysis and acidification.