CN211283845U

CN211283845U - Biological filter dam for treating mariculture tail water

Info

Publication number: CN211283845U
Application number: CN201921929678.2U
Authority: CN
Inventors: 陈文杰; 郑忠明
Original assignee: Ningbo University
Current assignee: Ningbo University
Priority date: 2019-11-11
Filing date: 2019-11-11
Publication date: 2020-08-18
Anticipated expiration: 2029-11-11

Abstract

The utility model discloses a biological filter dam for handling mariculture tail water, including the dam body of straining that is located the tail water pond, characteristics are that strain the dam body and build by porous brick, strain the fill of dam body and be equipped with a plurality of and load oyster shell pocket and a plurality of and load the haydite pocket, load oyster shell pocket and load the haydite pocket and strain the internal packing volume ratio of dam body and be (1-2): 1, load the oyster shell pocket individual and load the volume ratio of haydite pocket individual and be (2-3): 1; the aperture of the holes in the porous brick is 1-2cm, and the diameter of the meshes for loading the oyster shell mesh bags is 2 cm; the diameter of the mesh of the ceramsite-loading mesh bag is 0.5cm, and the handles are respectively arranged on the oyster shell-loading mesh bag and the ceramsite-loading mesh bag, so that the ceramsite-loading mesh bag has the advantages of simple structure, simplicity and convenience in operation and good treatment effect.

Description

Biological filter dam for treating mariculture tail water

Technical Field

The utility model relates to a mariculture tail water treatment field especially relates to a biological filter dam for handling mariculture tail water.

Background

With the rapid development of the mariculture industry, the treatment of tail water generated in the culture is also not negligible. The aquaculture water contains a large amount of feed, excrement and the like which are not digested by aquaculture animals, and if the aquaculture water is directly discharged into nearby water areas without treatment, a large amount of pollutants such as nitrogen and phosphorus in the aquaculture water can cause eutrophication of the water areas, cause water pollution such as water bloom, red tide and the like, and seriously harm the ecological environment. Therefore, the treatment of the seawater culture tail water is very important, is beneficial to promoting the construction of modern seawater culture industry with ecological priority, green development, high quality and high efficiency, and promotes the synergistic interaction of the culture industry development and the ecological environment protection.

The breeding tail water treatment equipment comprises a collecting tank, a sedimentation tank, a biological membrane (filter dam) treatment area and the like. Biological filter dams are key devices for tail water treatment. The method is an ecological purification technology for in-situ restoration of water by taking biological fillers as a matrix, manually building a dam body in the water and combining a rapid infiltration principle. The biological filter dam adsorbs and settles the pollutants flowing through the water body through the biological filler loaded in the dam body, and the adsorbed and settled pollutants are absorbed, decomposed and removed by the microorganisms attached to the dam body. In the current culture wastewater treatment, the biological filter dam is simple and crude, and only biological fillers are bagged and laid in a water body, so that the biological fillers are not easy to fix and replace; in the aspect of biological filler, a small part of oyster shell bags are used as the biological filler, but the net bags are often scratched by sharp shells, so that the oyster shells are scattered in water and are not easy to clean. The ceramsite is suspended on the water surface due to its light weight, and cannot be fully contacted with the wastewater. Therefore, the dam body is simple and crude, the filling material is used only singly, and the problems of high treatment cost, low removal rate and efficiency of organic elements in the wastewater and the like are often caused.

Disclosure of Invention

The utility model aims to solve the technical problem that a simple structure, easy and simple to handle and treatment effect is good handle the biological dam that strains of mariculture tail water is provided.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: a biological filter dam for treating mariculture tail water comprises a filter dam body located in a tail water pond, wherein the filter dam body is built by porous bricks, a plurality of loading oyster shell mesh bags and a plurality of loading ceramsite mesh bags are filled in the filter dam body, the filling volume ratio of the loading oyster shell mesh bags to the loading ceramsite mesh bags in the filter dam body is (1-2): 1, and the volume ratio of the loading oyster shell mesh bags to the loading ceramsite mesh bags is (2-3): 1.

The aperture of the holes in the porous brick is 1-2 cm.

The mesh diameter of the oyster shell-loading mesh bag is 2 cm; the diameter of the mesh of the ceramsite-loading mesh bag is 0.5 cm.

Handles are respectively arranged on the bag bodies for loading the oyster shell mesh bag and the ceramsite mesh bag. The transfer of the mesh bag and the replacement of the filler of the content are facilitated.

Compared with the prior art, the utility model has the advantages of: the utility model relates to a biological filter dam for processing seawater culture tail water, the used biological filler ceramsite has light weight, the inside is fine cellular micropore, the ceramsite can be prevented from suspending on the water surface after being bagged, the ceramsite is made to sink into the water body, and the filtering efficiency is improved; the oyster shell has rough surface and large specific surface area, can provide space for the growth and adhesion of bacterial biofilms, has good phosphorus adsorption capacity, has a large number of micropores in the middle prismatic layer of the shell and is mutually communicated to form a plurality of hole structures, has strong adsorption and exchange capacities, can adsorb particles in water, removes organic elements such as phosphorus, nitrogen and the like in the water, plays a role in purifying water quality, and is not easy to scatter after being bagged. Oyster shell adheres to for the casing shape, and the haydite is the surface spheroid, and contact area will improve its pollutant removal rate greatly when the water flows through, and the filler of different surface shapes can more satisfy its multi-angle decontamination needs to strain the dam body and form by the building of porous brick, build the dam body and form an enclosure structure, and cooperate the pocket filling mode to make biological filler easily fixed and change, even the oyster shell scatters carelessly also only in the dam body, also can not get into in the waste water body.

Drawings

FIG. 1 is a schematic structural view of a biological filter dam for treating tail water of mariculture according to the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

A biological filter dam for treating mariculture tail water comprises a filter dam body 2 positioned in a tail water pool 1, wherein the filter dam body 2 is built by porous bricks, a plurality of oyster shell-loading mesh bags 3 and a plurality of ceramsite-loading mesh bags 4 are filled in the filter dam body 2, the filling volume ratio of the oyster shell-loading mesh bags 3 to the ceramsite-loading mesh bags 4 in the filter dam body 2 is (1-2): 1, and the volume ratio of the oyster shell-loading mesh bags 3 to the ceramsite-loading mesh bags 4 is (2-3): 1.

In this embodiment, the pore size in the perforated brick is 1-2 cm. The diameter of the mesh of the oyster shell net bag 3 is 2 cm; the diameter of the mesh of the ceramsite-loading mesh bag 4 is 0.5 cm. Handles 5 are respectively arranged on the bag bodies of the oyster shell net bag 3 and the ceramsite net bag 4. The biological fillers are oyster shells (with a medium specification and a diameter of about 3 cm) and ceramic granules (with a diameter of about 1 cm), and after the two fillers are filled into mesh bags, the mesh bags are sequentially filled in the filtering dam body 2 built by porous bricks.

The above embodiments are further illustrative of the present invention, but the scope of the present invention is subject to the claims.

Claims

1. The utility model provides a biological dam that strains for handling mariculture tail water, is including being located the dam body of straining in the tail water pond, its characterized in that: the filtering dam body is built by porous bricks, a plurality of oyster shell-loading mesh bags and a plurality of ceramsite-loading mesh bags are filled in the filtering dam body, the filling volume ratio of the oyster shell-loading mesh bags to the ceramsite-loading mesh bags in the filtering dam body is (1-2): 1, and the volume ratio of the oyster shell-loading mesh bags to the ceramsite-loading mesh bags is (2-3): 1.

2. A biological filter dam for treating tail water from mariculture according to claim 1, wherein: the aperture of the holes in the porous brick is 1-2 cm.

3. A biological filter dam for treating tail water from mariculture according to claim 1, wherein: the mesh diameter of the oyster shell-loading mesh bag is 2 cm; the diameter of the mesh of the ceramsite-loading mesh bag is 0.5 cm.

4. A biological filter dam for treating tail water from mariculture according to claim 1, wherein: handles are respectively arranged on the bag bodies for loading the oyster shell mesh bag and the ceramsite mesh bag.