CN210915512U

CN210915512U - Reactor for quickly culturing denitrifying granular sludge

Info

Publication number: CN210915512U
Application number: CN201921921435.4U
Authority: CN
Inventors: 周松伟; 汪晓军; 陈振国
Original assignee: Foshan Huaer Ammonium Biotechnology Co ltd
Current assignee: Foshan Huaer Ammonium Biotechnology Co ltd
Priority date: 2019-11-08
Filing date: 2019-11-08
Publication date: 2020-07-03
Anticipated expiration: 2029-11-08

Abstract

The utility model discloses a reactor of cultivateing denitrification granular sludge fast, including reactor main part, first delivery port, first water inlet, backward flow delivery port and backward flow water inlet, be equipped with the combination filler in the reactor main part, the backward flow water inlet is located reactor main part lower part, and the backward flow delivery port is located reactor main part upper portion, connects through the back flow between backward flow delivery port and the backward flow water inlet, and the back flow forms the circulation with reactor main part. The utility model discloses simple structure is reliable, need not the sedimentation tank and can obtain granular sludge, and the backwash pump does not need backward flow mud, can reduce the risk that the backwash pump is blockked up, adopts this reactor to cultivate granular sludge, and speed is very fast, and granular sludge size is big, and the activity is high, and the total nitrogen desorption load of reactor is high.

Description

Reactor for quickly culturing denitrifying granular sludge

Technical Field

The utility model relates to a reactor technical field is cultivateed to mud, in particular to cultivate reactor of denitrification granule mud fast.

Background

The denitrification process is a key ring in the biological denitrification technology, and the quality of the treatment effect of the process directly influences whether the total nitrogen amount of the final effluent of the whole treatment process can reach the standard or not. Compared with the common activated sludge process and the common biological membrane process, the denitrification granular sludge process is favored in the research field of biological denitrification because of the advantages of high microbial biomass, high sludge load, small reactor volume and the like.

At present, most denitrification granular sludge reactors have two problems. The first is that the reactor often requires ready anaerobic granular sludge to seed startup, adding to the cost and difficulty of reactor startup; the second is that the cultivation and maturation period of the granular sludge is too long, often requiring at least one month. These two problems restrict the application of the denitrification granular sludge process in practical engineering. If ordinary activated sludge can be adopted for inoculation and denitrification granular sludge can be quickly started and obtained, the technical development of the process can be greatly promoted.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's not enough, provide a reactor of cultivateing denitrification granular sludge fast, this reactor is inside to be filled has the combination to pack, can guarantee that the reactor is inside to have sufficient mud concentration, can obtain denitrification granular sludge fast again.

The technical scheme of the utility model is that: the utility model provides a cultivate reactor of denitrification granular sludge fast, includes reactor main part, first delivery port, first water inlet, backward flow delivery port and backward flow water inlet, is equipped with the combined packing in the reactor main part, and the backward flow water inlet is located reactor main part lower part, and the backward flow delivery port is located reactor main part upper portion, connects through the back flow between backward flow delivery port and the backward flow water inlet, and the back flow forms the circulation with reactor main part. The reactor is an upflow sludge blanket, the combined filler is used as a denitrification sludge blanket, the combined filler is filled in the reactor to be beneficial to sludge attachment, return water flows out from the return water outlet and flows to the return water inlet through the return pipe, and then returns to the return water outlet after passing through the reactor main body to form return circulation, and rising water flow is formed in the reactor main body.

And a reflux pump is arranged on the reflux pipe, and the reflux pump pumps the water pump at the reflux water outlet to the reflux water inlet. Wherein, the reflux outlet, the reflux water inlet and the reflux pump jointly form a reflux system of the reactor, the flow rate of ascending water flow in the reactor is controlled by controlling the flow of the reflux pump, the reflux pump adopts a peristaltic pump with large flow, and the water outlet of the top reflux outlet returns to the reflux water inlet at the bottom, thereby playing the roles of diluting the inlet water and improving the ascending speed of the water flow. When the flow velocity of control preferred, be favorable to each corner sewage in the reactor to be in the mobile state, avoid appearing the stagnant water channeling area in the reactor, can also make the sewage of entering contact with mud relatively fast simultaneously.

The first water inlet is also connected with a water inlet pump. Wherein, first water inlet and intake pump have formed water inlet system, and the intake pump is with treating the waste water pump to the reactor main part.

The first water inlet is positioned on the side wall of the lower part of the reactor main body, or the first water inlet is positioned on a return pipe between the return pump and the return water inlet and is connected by adopting a three-way joint. Wherein, the waste water of treating is let in to first water inlet, and return flow water inlet, first water inlet and backwash pump are connected respectively to three way connection, adopt this kind of mode can dilute the mixture intaking better.

The reactor main body is of a cylindrical structure, and the height-diameter ratio is at least 25. Wherein, adopt this high footpath ratio can obtain great rising velocity of water flow and bubble velocity of flow, be favorable to washing the denitrification mud on the sludge blanket, obtain denitrification granule mud more fast.

The first water outlet is positioned on the side wall of the upper part of the reactor main body, and the position of the first water outlet is higher than that of the backflow water outlet. The first water outlet automatically discharges the treated water, and the return water outlet discharges the circulating return water into the return pipe.

The combined filler is suspended in the reactor main body through a nylon rope, and a weight is tied at the bottom of the combined filler. The combined filler is used as a denitrification sludge bed, so that denitrification sludge can be attached to the combined filler more, the sludge loss is avoided, and the heavy object can prevent the combined filler from floating.

The combined filler is made of annular plastic, and a fiber yarn material is woven on the annular plastic. The combined filler is used as a sludge bed of the denitrification activated sludge, so that the sludge can be effectively intercepted, and the higher denitrification sludge concentration in the reactor is kept, which is the necessary basis for obtaining the denitrification granular sludge.

A round base is arranged below the reactor main body.

The water inlet pump and the reflux pump both adopt peristaltic pumps with adjustable flow. Wherein, the water inlet pump controls the water inlet load by adjusting the flow, thereby realizing the optimal load of nitrobacteria growth.

Compared with the prior art, the utility model, following beneficial effect has:

this reactor of cultivateing denitrification granular sludge fast is with the combined packing as denitrification sludge bed, place inside the cylindrical reactor of great height-diameter ratio, reactor inside can maintain higher sludge concentration, the mud on the combined packing simultaneously can form denitrification granular sludge under the scouring action that receives ascending rivers and bubble rapidly, denitrification denitrogenation load is higher, great height-diameter ratio and the formation of rivers upwelling velocity of flow accelerated granular sludge, the combined packing can hold back mud, granular sludge has been avoided flowing along with the rivers, for ordinary denitrification reactor, the utility model discloses acquisition denitrification particulate matter that can be rapid.

The utility model discloses simple structure is reliable, need not the sedimentation tank and can obtain granular sludge, and the backwash pump does not need backward flow mud, can reduce the risk that the backwash pump is blockked up, adopts this reactor to cultivate granular sludge, and speed is very fast, and granular sludge size is big, and the activity is high, and the total nitrogen desorption load of reactor is high.

Drawings

FIG. 1 is a schematic structural diagram of the reactor for rapidly culturing denitrifying granular sludge.

Wherein, 1 is a first water outlet, 2 is a return water outlet, 3 is a reactor main body, 4 is a combined filler, 5 is a first water inlet, 6 is a return water inlet, 7 is a water inlet pump, 8 is a return pump, and 9 is a base.

Detailed Description

The present invention will be described in further detail with reference to examples, but the present invention is not limited thereto.

Examples

The reactor for rapidly culturing the denitrification granular sludge comprises a reactor main body 3, a first water outlet 1, a first water inlet 5, a backflow water outlet 2 and a backflow water inlet 6, wherein a combined filler 4 is arranged in the reactor main body, the backflow water inlet is positioned at the lower part of the reactor main body, the backflow water outlet is positioned at the upper part of the reactor main body, the backflow water outlet and the backflow water inlet are connected through a backflow pipe, and the backflow pipe and the reactor main body form circulation. The reactor is an upflow sludge blanket, the combined filler is used as a denitrification sludge blanket, the combined filler is filled in the reactor to be beneficial to sludge attachment, backflow water flows out from the backflow water outlet, flows to the backflow water inlet through the backflow pipe, returns to the backflow water outlet after passing through the reactor main body to form backflow circulation, and ascending water flow is formed in the reactor main body.

The backflow pipe is provided with a backflow pump 8, and the backflow pump enables a water pump at the backflow water outlet to flow to the backflow water inlet. Wherein, the reflux outlet, the reflux water inlet and the reflux pump jointly form a reflux system of the reactor, the flow rate of ascending water flow in the reactor is controlled by controlling the flow of the reflux pump, the reflux pump adopts a peristaltic pump with large flow, and the water outlet of the top reflux outlet returns to the reflux water inlet at the bottom, thereby playing the roles of diluting the inlet water and improving the ascending speed of the water flow. When the flow velocity of control preferred, be favorable to each corner sewage in the reactor to be in the mobile state, avoid appearing the stagnant water channeling area in the reactor, can also make the sewage of entering contact with mud relatively fast simultaneously. The water inlet pump and the reflux pump both adopt peristaltic pumps with adjustable flow, and the optimal load for growth of nitrobacteria is realized by adjusting the flow to control the water inlet load.

The first water inlet is also connected with a water inlet pump 7, the first water inlet and the water inlet pump form a water inlet system, and the water inlet pump pumps wastewater to be treated to the reactor main body. The first water inlet is positioned on the lower side wall of the reactor main body. Wherein, the waste water of treating is let in to first water inlet, and return flow water inlet, first water inlet and backwash pump are connected respectively to three way connection, adopt this kind of mode can dilute the mixture intaking better. The first water outlet is positioned on the upper side wall of the reactor main body, the position of the first water outlet is higher than that of the return water outlet, the first water outlet automatically discharges treated water, and the return water outlet discharges circulating return water into the return pipe.

The reactor main body is of a cylindrical structure, and the height-diameter ratio is 30. The larger height-diameter ratio can obtain larger ascending water flow velocity and bubble flow velocity, thereby being beneficial to washing the denitrification sludge on the sludge bed and obtaining the denitrification granular sludge more quickly. The combined packing is suspended in the reactor main body through a nylon rope, and a weight is tied at the bottom of the combined packing. The combined filler is used as a denitrification sludge bed, so that denitrification sludge can be attached to the combined filler more, the sludge loss is avoided, and the heavy objects can prevent the combined filler from floating. The combined filler is made of annular plastic, and the annular plastic is woven with a fiber material. The combined filler is used as a sludge bed of the denitrification activated sludge, can effectively intercept the sludge and keep higher denitrification sludge concentration in the reactor, and the higher denitrification sludge concentration is the necessary basis for obtaining the denitrification granular sludge. A round base 9 is arranged below the reactor main body.

As an implementable alternative, the outlet of the reflux pump can be connected with the water inlet through the three-way joint, and the effect of diluting and mixing the inlet water can be better achieved.

The reactor for rapidly culturing the denitrification granular sludge has the using method and the principle that 3L of activated sludge is added into the denitrification reactor before continuous water feeding, so that the MLVSS in the reactor reaches 4000mg/L, and denitrifying bacteria are cultured into dominant bacteria in an intermittent water feeding mode. The water inlet composition is as follows: 200mg/L of N2O-N and 600mg/L of CODCr, USB only performed internal reflux. And after 3 days of intermittent water inflow, the mode is switched into a continuous water inflow mode, and the inflow and the reflux flow are improved according to the adjustment of the nitrite nitrogen concentration of the outlet water.

The denitrifying bacteria are continuously proliferated, the concentration of the denitrifying bacteria in the sludge is increased, and the denitrification effect of the system is better correspondingly. According to the denitrification load of the system, the reflux flow is correspondingly increased, so that the ascending flow velocity of water flow in the system is increased, the hydraulic shearing force on the surface of the denitrification sludge on the sludge bed is increased, and the granular sludge starts to be gradually shaped.

Correspondingly, the denitrification effect of the denitrification reactor is better and better, the bubbles generated by denitrification gradually change, the bubble volume is larger and larger, the bubbles also form a shearing action on the granular sludge in the upward floating process, and the formation of the granular sludge in the reactor is accelerated.

The combined filler is used as a sludge bed of the denitrification reactor, plays a role in fixing and adhering the denitrification sludge, avoids the loss of the granular sludge and is vital to the formation of the granular sludge.

As described above, the present invention can be realized well, and the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention; all equivalent changes and modifications made according to the present invention are intended to be covered by the scope of the claims of the present invention.

Claims

1. The utility model provides a cultivate reactor of denitrification granular sludge fast, its characterized in that, includes reactor main part, first delivery port, first water inlet, backward flow delivery port and backward flow water inlet, is equipped with the combined packing in the reactor main part, and the backward flow water inlet is located reactor main part lower part, and the backward flow delivery port is located reactor main part upper portion, connects through the back flow between backward flow delivery port and the backward flow water inlet, and the back flow forms the circulation with reactor main part.

2. The reactor for rapidly culturing denitrifying granular sludge according to claim 1, wherein said reflux pipe is provided with a reflux pump, and said reflux pump pumps water from said reflux water outlet to said reflux water inlet.

3. The reactor for rapidly culturing denitrifying granular sludge according to claim 1, wherein said first water inlet is further connected with a water inlet pump.

4. The reactor for rapidly culturing denitrifying granular sludge according to claim 1, wherein the first water inlet is located on the lower sidewall of the reactor body, or the first water inlet is located on the return pipe between the return pump and the return water inlet, and is connected by a three-way joint.

5. The reactor for rapidly culturing denitrifying granular sludge according to claim 1, wherein the reactor body has a cylindrical structure and a height-diameter ratio of at least 25.

6. The reactor for rapidly culturing denitrifying granular sludge according to claim 1, wherein the first water outlet is located at the upper side wall of the reactor body, and the position of the first water outlet is higher than that of the return water outlet.

7. The reactor for rapidly culturing the denitrifying granular sludge according to claim 1, wherein the combined filler is suspended in the reactor main body through nylon ropes, and a weight is tied to the bottom of the combined filler.

8. The reactor for rapidly culturing denitrifying granular sludge according to claim 1, wherein the combined packing is made of ring-shaped plastic, and the fiber silk material is woven on the ring-shaped plastic.

9. The reactor for rapidly culturing denitrifying granular sludge according to claim 1, wherein a circular base is provided under the reactor main body.

10. The reactor for rapidly culturing the denitrifying granular sludge according to claim 1, wherein the water inlet pump and the water return pump both adopt peristaltic pumps with adjustable flow rates.