CN212425569U

CN212425569U - Integrated device for secondary treatment of dredged residual water

Info

Publication number: CN212425569U
Application number: CN202020329199.3U
Authority: CN
Inventors: 黄佳音; 杨旺旺; 董先锋
Original assignee: Cccc Tianjin Eco Environmental Protection Design & Research Institute Co ltd
Current assignee: Cccc Tianjin Eco Environmental Protection Design & Research Institute Co ltd
Priority date: 2020-03-16
Filing date: 2020-03-16
Publication date: 2021-01-29
Anticipated expiration: 2030-03-16

Abstract

The utility model discloses an integrated device for the secondary treatment of dredging residual water, which comprises a main reaction tank, a pre-reaction tank and an aeration device, wherein the aeration device and a sludge pump are arranged in the main reaction tank, the main reaction tank and the pre-reaction tank are adjacently arranged, and the bottoms of the main reaction tank and the pre-reaction tank are communicated through a communication port; the pre-reaction tank is used for the primary reaction of the dredged residual water after primary treatment and a carbon source, and the dredged residual water after the primary reaction enters the main reaction tank from the communication port; the main reaction tank is used for carrying out aerobic biochemical treatment on the dredging residual water from the pre-reaction tank; a water outlet is arranged at the upper part of the main reaction tank; the sludge pump is arranged at the bottom of one side of the main reaction tank, which is far away from the pre-reaction tank, and is used for returning partial sludge at the bottom of the main reaction tank to the pre-reaction tank through a return pipeline and discharging redundant sludge; the aeration device is horizontally arranged at the bottom of the main reaction tank and is connected with an air blower through a pipeline.

Description

Integrated device for secondary treatment of dredged residual water

Technical Field

The utility model relates to a dredge surplus water secondary treatment field, especially relate to an integrated device for dredging surplus water secondary treatment.

Background

The Sequencing Batch Reactor (SBR) is a Batch activated sludge process. The method repeatedly carries out unit operation procedures of aeration, sedimentation and the like of sewage treatment in a reaction tank according to time sequence. The running time of each treatment process, the concentration of the mixed liquid in the reaction tank, the running condition and the like in the SBR process can be flexibly mastered according to the water quality of inlet and outlet water, the running function requirement and the like, and different sewage treatment effects can be obtained as long as the operation time of each stage is effectively controlled and changed. The result of the research of the SBR method at home and abroad shows that the process has the following advantages: the process is simple, and a regulating tank and a primary settling tank are not needed to be arranged under most conditions, so that the cost is saved; the SBR reaction tank has high biochemical reaction thrust and high treatment efficiency; the operation mode is flexible and reliable, and the management is simple; the denitrification and dephosphorization effect is good; the sludge activity in the reaction tank is high; the sedimentation performance is good, the sludge can be effectively prevented from swelling, and the impact load resistance is strong; the working stability is good. Many of the advantages of the SBR process are drawbacks that cannot be overcome by the continuous flow activated sludge process. The SBR process has great water quality requirement range, and is suitable for treating city domestic sewage and different kinds of industrial effluent. Therefore, the research on the SBR method in recent years has attracted more and more attention in the world along with the improvement of the sewage treatment standard.

In the field of black and odorous water body treatment in China, ecological dredging is an important means for endogenous treatment, but sediment subjected to dredging and dewatering can generate a large amount of residual water with substandard water quality, and the residual water is directly discharged back or simply treated and cannot meet the water environment treatment requirement, so that a set of method for treating the dredging residual water is urgently needed.

Disclosure of Invention

The utility model aims at providing an integrated device for dredging surplus water secondary treatment.

Therefore, the technical scheme of the invention is as follows:

an integrated device for secondary treatment of dredged residual water comprises a tank body and an aeration device. The tank body comprises a main reaction tank and a pre-reaction tank, wherein an aeration device and a sludge pump are arranged in the main reaction tank, the main reaction tank and the pre-reaction tank are adjacently arranged, and the bottoms of the main reaction tank and the pre-reaction tank are communicated through a communication port; the pre-reaction tank is used for the primary reaction of the dredged residual water after primary treatment and a carbon source, and the dredged residual water after the primary reaction enters the main reaction tank from the communication port; the main reaction tank is used for carrying out aerobic biochemical treatment on the dredging residual water from the pre-reaction tank; a water outlet is arranged at the upper part of the main reaction tank; the sludge pump is arranged at the bottom of one side, far away from the pre-reaction tank, in the main reaction tank and is used for returning partial sludge at the bottom of the main reaction tank to the pre-reaction tank through a return pipeline and discharging redundant sludge; the aeration device is horizontally arranged at the bottom of the main reaction tank and is connected with an air blower through a pipeline and used for supplying oxygen to the main reaction tank and blowing away nitrogen generated by nitration reaction.

Wherein, the aeration device comprises a plurality of aeration pipes which are parallel and connected in parallel and aeration heads which are arranged on each aeration pipe at intervals.

And the dredged residual water and the carbon source after the primary treatment are sent into the pre-reaction tank through a water inlet pipeline and a water inlet lifting pump. A water decanting device is also arranged on the water outlet.

In an embodiment of the present invention, the communication port is provided with two wall bottom spaces between the main reaction tank and the pre-reaction tank.

In one embodiment of the present invention, the length of the pre-reaction tank is 1m, the width thereof is 2m, and the height thereof is 2.25m, and the length of the main reaction tank is 3m, the width thereof is 2m, and the height thereof is 2.25 m; the size of the communicating opening is 20mm long and 10mm high.

The utility model discloses following beneficial effect has:

1. the integrated device for the secondary treatment of the dredged residual water has simple structure, less investment and large treatment capacity;

2. by reasonably arranging the aeration device, the sewage can be fully reacted in the aeration process, and the effluent quality is improved;

3. the device is characterized in that part of sludge containing microorganisms flows back to the pre-reaction tank in the secondary treatment process of the dredged residual water, so that the pre-reaction efficiency is improved.

Drawings

Fig. 1 is a schematic structural diagram of the integrated device for secondary treatment of dredged residual water of the present invention;

fig. 2 is a partial structural plan view of the integrated apparatus for secondary treatment of dredged residual water of fig. 1.

Wherein:

1. a water inlet lift pump 2, a pre-reaction tank 3, a return pipeline 4, a communication port 5 and an aeration pipe

6. Aeration head 7, sludge pump 8, sludge pipeline 9, blower 10 and main reaction tank

11. Decanter for water

Detailed Description

The structure of the integrated device for secondary treatment of the dredged residual water according to the present invention will be described in detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, the utility model discloses an integrated device for dredging residual water secondary treatment, the device includes cell body and aeration equipment.

The tank body comprises a main reaction tank and a pre-reaction tank 10, wherein an aeration device and a sludge pump 7 are arranged in the main reaction tank 10, the main reaction tank 10 and the pre-reaction tank 2 are adjacently arranged, and the bottoms of the main reaction tank 10 and the pre-reaction tank 2 are communicated through a communication port 4; the pre-reaction tank 2 is used for the primary reaction of the dredged residual water and the carbon source after the primary treatment, plays a role in balancing the water quality (COD, temperature, pH) and water quantity so as to avoid the impact load on the SBR biochemical treatment and simultaneously carries out the primary aerobic biochemical treatment. And the dredged residual water after the primary reaction enters the main reaction tank 10 from the communication port 4. The main reaction tank 10 is used for carrying out aerobic biochemical treatment on the dredging residual water from the pre-reaction tank; the upper part of the main reaction tank is provided with a water outlet. The sludge pump 7 is arranged at the bottom of one side, far away from the pre-reaction tank 2, in the main reaction tank 10 and used for returning partial sludge at the bottom of the main reaction tank 10 to the pre-reaction tank 2 through the return pipeline 3 and discharging redundant sludge.

The aeration device is horizontally arranged at the bottom of the main reaction tank and is connected with a blower 9 through a pipeline and used for supplying oxygen to the main reaction tank 10, stirring, lifting sludge and digesting sludge. The aeration device comprises a plurality of aeration pipes 5 which are parallel and connected in parallel and aeration heads 6 which are arranged on each aeration pipe 5 at intervals.

And the dredging residual water and the carbon source after the primary treatment are sent into the pre-reaction tank 2 through a water inlet pipeline and a water inlet lifting pump 1. In addition, a water decanting device 11 is also arranged on the water outlet.

In an embodiment of the present invention, the pre-reaction tank 2 has a length of 1m, a width of 2m, and a height of 2.25m, and the main reaction tank 10 has a length of 3m, a width of 2m, and a height of 2.25 m. Two communication ports 4 are arranged at intervals at the bottom of the wall surface between the main reaction tank 10 and the pre-reaction tank 2, and each communication port is 20mm long and 10mm high.

Claims

1. The utility model provides an integrated device for dredging surplus water secondary treatment, includes cell body and aeration equipment, its characterized in that: the tank body comprises a main reaction tank and a pre-reaction tank, an aeration device and a sludge pump are arranged in the main reaction tank,

the main reaction tank and the pre-reaction tank are adjacently arranged, and the bottoms of the main reaction tank and the pre-reaction tank are communicated through a communication port;

the pre-reaction tank is used for the primary reaction of the dredged residual water after primary treatment and a carbon source, and the dredged residual water after the primary reaction enters the main reaction tank from the communication port;

the main reaction tank is used for carrying out aerobic biochemical treatment on the dredging residual water from the pre-reaction tank; a water outlet is arranged at the upper part of the main reaction tank;

the sludge pump is arranged at the bottom of one side, far away from the pre-reaction tank, in the main reaction tank and is used for returning partial sludge at the bottom of the main reaction tank to the pre-reaction tank through a return pipeline and discharging redundant sludge;

the aeration device is horizontally arranged at the bottom of the main reaction tank and is connected with an air blower through a pipeline and used for supplying oxygen to the main reaction tank and blowing away nitrogen generated by nitration reaction.

2. The integrated apparatus of claim 1, wherein: the aeration device comprises a plurality of parallel aeration pipes and aeration heads arranged on each aeration pipe at intervals.

3. The integrated apparatus of claim 1, wherein: and the dredged residual water and the carbon source after the primary treatment are sent into the pre-reaction tank through a water inlet pipeline and a water inlet lifting pump.

4. The integrated apparatus of claim 1, wherein: a water decanting device is arranged on the water outlet.

5. The integrated apparatus of claim 1, wherein: two communication ports are arranged at the bottom of the wall surface between the main reaction tank and the pre-reaction tank at intervals.

6. The integrated device of any one of claims 1-5, wherein: the length of the pre-reaction tank is 1m, the width of the pre-reaction tank is 2m, and the height of the pre-reaction tank is 2.25m, and the length of the main reaction tank is 3m, the width of the main reaction tank is 2m, and the height of the main reaction tank is 2.25 m.

7. The integrated apparatus of claim 6, wherein: the size of the communicating opening is 20mm long and 10mm high.