CN216946640U

CN216946640U - Industrial recirculating aquaculture tail water treatment system

Info

Publication number: CN216946640U
Application number: CN202220351372.9U
Authority: CN
Inventors: 潘澜澜; 李天宇; 赵晨冉; 李秀辰; 张倩; 母刚
Original assignee: Dalian Ocean University
Current assignee: Dalian Ocean University
Priority date: 2022-02-22
Filing date: 2022-02-22
Publication date: 2022-07-12
Anticipated expiration: 2032-02-22

Abstract

The utility model discloses an industrial recirculating aquaculture tail water treatment system, which is characterized in that: the system include tail water collecting header pipe, tail water collecting header pipe's entry end and the tail water delivery pipe that is located a plurality of breed ponds in the breed region parallelly connected mutually, still be provided with the water valve on tail water delivery pipe simultaneously, the tail water still is provided with the sewage pump on collecting header pipe, tail water collecting header's exit end links to each other with the microstrainer that is arranged in the microstrainer pond, and the solid waste discharge end of microstrainer links to each other with solid useless fermentation vat through the pipeline that has first pump, and the exit end in microstrainer pond then links to each other with tail water treatment tank through the pipeline that has the second pump, tail water treatment tank links to each other with one-level sedimentation tank and second grade sedimentation tank in proper order through the pipeline that has the valve, then communicates on the second grade sedimentation tank has the biological treatment pipeline that has the third pump.

Description

Industrial recirculating aquaculture tail water treatment system

Technical Field

The utility model relates to the field of water treatment, in particular to an industrial recirculating aquaculture tail water treatment system.

Background

Aquatic products are a large amount of food which is deeply loved and necessary for Chinese people and has huge market consumption. With the continuous improvement of the culture technology, the input and output technologies become more and more mature, but a large amount of sewage (culture tail water) is generated in the industrial culture process of aquatic products, and meanwhile, the pollution index of the sewage is higher and higher, so that the environment is greatly influenced. Pollutants in the culture tail water are mainly organic matters, wherein the index of nitrogen and phosphorus is high; the sewage quantity is large, and the discharge is very centralized; meanwhile, the aquaculture sewage also comprises a large amount of solid matters. That is, the discharge of tail water from cultivation has become an urgent problem to be solved. There is therefore a need for a method or apparatus that addresses the above-mentioned problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art and provides the industrial recirculating aquaculture tail water treatment system which is simple in structure, ingenious in design, reasonable in layout, high in purification rate and free of secondary pollution.

The technical solution of the utility model is as follows: the utility model provides an industrial recirculating aquaculture tail water processing system which characterized in that: the system comprises a tail water collecting main pipe 1, wherein the inlet end of the tail water collecting main pipe 1 is connected with tail water discharge pipes 2 of a plurality of culture ponds in a culture area in parallel, water valves 3 are also arranged on the tail water discharge pipes 2, a sewage pump 4 is also arranged on the tail water collecting main pipe 1, the outlet end of the tail water collecting main pipe 1 is connected with a micro-filter 6 in a micro-filter pond 5, the solid waste discharge end of the micro-filter 6 is connected with a solid waste fermentation pond 8 through a pipeline with a first pump 7, the outlet end of the micro-filter pond 5 is connected with a tail water treatment pond 10 through a pipeline with a second pump 9, the tail water treatment pond 10 is sequentially connected with a primary sedimentation tank 11 and a secondary sedimentation tank 12 through a pipeline with a valve, and a biological treatment pipeline 14 with a third pump 13 is communicated on the secondary sedimentation tank 12,

the system also comprises a biological treatment module, the biological treatment module is composed of a plurality of biological bed groups which are connected in parallel, the biological bed group comprises a floating bed 15 and an algae bed 16 which are connected in series, the inlet end of the floating bed 15 in the biological bed group is communicated with a biological treatment pipeline 14, the outlet end of the algae bed 16 is connected with a purified water reservoir 17, the pipelines at the inlet end of the floating bed 15 and the pipelines at the outlet end of the algae bed 16 are both provided with water valves 3,

the system also comprises a secondary clean water reservoir 18, the secondary clean water reservoir 18 is communicated with the secondary sedimentation tank 12 through a pipeline with a valve, a return pipeline 20 with a fourth pump 19 and a valve is also connected between the clean water reservoir 17 and the secondary clean water reservoir 18, meanwhile, the secondary clean water reservoir 18 is also communicated with the biological treatment pipeline 14 through a pipeline with a fifth pump 21,

and water quality monitors are arranged in the purified water reservoir 17 and the secondary purified water reservoir 18.

Compared with the prior art, the utility model has the following advantages:

the tail water treatment system for the industrial circulating water aquaculture is simple in structure, ingenious in design and reasonable in layout, and aims at solving the problems that tail water generated by traditional industrial aquaculture cannot be directly discharged and environmental pollution is caused in the discharging process, a special structure is designed, a micro-filter is utilized to filter solid waste of the aquaculture tail water, and intercepted solid waste is conveyed to a solid waste fermentation tank to be fermented, so that the purpose of waste utilization is achieved; after the tail water after filtering and removing the solid waste is subjected to multistage sedimentation, biological evolution is carried out on the supernatant through a plurality of biological treatment modules, Chemical Oxygen Demand (COD), nitrogen and phosphorus in the tail water are removed by utilizing plants, algae and substrates in the biological treatment modules, and if the tail water after once biological filtration still does not meet the discharge requirement, the tail water can be conveyed to the front end of the biological treatment module again to carry out biological treatment for multiple times, so that the quality of the effluent water is finally ensured to reach the discharge standard. The aquaculture tail water treatment system has high purification rate, and can effectively ensure that no secondary pollution is generated in the tail water discharge process, so that the aquaculture tail water treatment system has various advantages, is particularly suitable for popularization and application in the field, and has very wide market prospect.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Detailed Description

The following description will explain embodiments of the present invention with reference to the accompanying drawings. As shown in fig. 1: an industrial recirculating aquaculture tail water treatment system comprises a tail water collecting main pipe 1, wherein the inlet end of the tail water collecting main pipe 1 is connected with tail water discharge pipes 2 of a plurality of culture ponds in a culture area in parallel, a water valve 3 is arranged on the tail water discharge pipes 2, a sewage pump 4 is arranged on the tail water collecting main pipe 1, the outlet end of the tail water collecting main pipe 1 is connected with a micro-filter 6 in a micro-filter pond 5, the solid waste discharge end of the micro-filter 6 is connected with a solid waste fermentation pond 8 through a pipeline with a first pump 7, the outlet end of the micro-filter pond 5 is connected with a tail water treatment pond 10 through a pipeline with a second pump 9, the tail water treatment pond 10 is sequentially connected with a primary sedimentation pond 11 and a secondary sedimentation pond 12 through a pipeline with a valve, and a biological treatment pipeline 14 with a third pump 13 is communicated on the secondary sedimentation pond 12,

the system further comprises a secondary clean water reservoir 18, the secondary clean water reservoir 18 is connected with the secondary sedimentation tank 12 through a pipeline with a valve, a return pipeline 20 with a fourth pump 19 and a valve is connected between the clean water reservoir 17 and the secondary clean water reservoir 18, the secondary clean water reservoir 18 is also connected with the biological treatment pipeline 14 through a pipeline with a fifth pump 21,

The working process of the tail water treatment system for the industrial recirculating aquaculture of the embodiment of the utility model is as follows: when tail water in a culture pond needs to be discharged, firstly, a water valve 3 on a tail water discharge pipe 2 on a target culture pond is opened, then a control system of the system controls a sewage pump 4 to work, the tail water in the culture pond enters a micro-filter 6 through a tail water collecting main pipe 1, solid waste in the tail water is intercepted by the micro-filter 6, the tail water without the solid waste enters a tail water treatment pond 10 under the action of a second pump 9, after the micro-filter 6 works for a period of time, filter residue solid waste can be flushed into a solid waste fermentation pond 8 through a pipeline with a first pump 7 for fermentation, and a fermentation product can be mixed with agricultural waste and the like to be used as an organic fertilizer;

the water body fully precipitated in the tail water treatment tank 10 sequentially enters a first-stage sedimentation tank 11 and a second-stage sedimentation tank 12 for multiple times of precipitation treatment, supernatant in the second-stage sedimentation tank 12 enters a plurality of biological beds through a biological treatment pipeline 14 under the action of a third pump 13, the water body sequentially passes through a floating bed 15 and an algae bed 16, the water body is biologically purified in the process of flowing through the floating bed 15 and the algae bed 16, purified water after biological purification enters a purified water storage tank 17, a water quality monitor in the purified water storage tank 17 detects the water quality, the water can be directly discharged if the water quality reaches a discharge standard, if the water quality still does not reach the discharge standard, a control system controls a fourth pump 19 to work, the water body in the purified water storage tank 17 is pumped into a second purified water storage tank 18 through a water return pipeline 20, and then the control system starts a fifth pump 21, the water in the secondary purified water reservoir 18 is conveyed to the biological bed again through the biological treatment pipeline 14 for biological purification, and after a plurality of times of biological purification, the water in the purified water reservoir 17 is detected by the water quality monitor to reach the discharge standard, and then the water can be discharged.

Claims

1. The utility model provides an industrial recirculating aquaculture tail water processing system which characterized in that: the system comprises a tail water collecting main pipe (1), wherein the inlet end of the tail water collecting main pipe (1) is connected with a plurality of tail water discharge pipes (2) of culture ponds in a culture area in parallel, a water valve (3) is also arranged on each tail water discharge pipe (2), a sewage pump (4) is also arranged on each tail water collecting main pipe (1), the outlet end of each tail water collecting main pipe (1) is connected with a micro-filter (6) in a micro-filter pond (5), the solid waste discharge end of each micro-filter (6) is connected with a solid waste fermentation pond (8) through a pipeline with a first pump (7), the outlet end of each micro-filter pond (5) is connected with a tail water treatment pond (10) through a pipeline with a second pump (9), and the tail water treatment pond (10) is sequentially connected with a primary sedimentation pond (11) and a secondary sedimentation pond (12) through a pipeline with a valve, the secondary sedimentation tank (12) is communicated with a biological treatment pipeline (14) with a third pump (13),

the system also comprises a biological treatment module, the biological treatment module is composed of a plurality of biological bed groups which are connected in parallel, the biological bed group comprises a floating bed (15) and an algae bed (16) which are connected in series, the inlet end of the floating bed (15) in the biological bed group is communicated with a biological treatment pipeline (14), the outlet end of the algae bed (16) is connected with a water purification reservoir (17), the pipelines at the inlet end of the floating bed (15) and the pipelines at the outlet end of the algae bed (16) are both provided with water valves (3),

the system also comprises a secondary purified water reservoir (18), the secondary purified water reservoir (18) is communicated with the secondary sedimentation tank (12) through a pipeline with a valve, a water return pipeline (20) with a fourth pump (19) and a valve is also connected between the purified water reservoir (17) and the secondary purified water reservoir (18), and the secondary purified water reservoir (18) is also communicated with the biological treatment pipeline (14) through a pipeline with a fifth pump (21),

and water quality monitors are arranged in the purified water reservoir (17) and the secondary purified water reservoir (18).