Mariculture source water treatment ultrafiltration equipment

Abstract

The utility model discloses ultrafiltration equipment for mariculture source water treatment. The ultrafiltration equipment comprises a frame, and at least one ultrafiltration membrane component, a water inlet pipeline, a water production pipeline and a blow-off pipeline which are arranged on the frame, the ultrafiltration membrane is used as a core, the filtering precision is high, and the quality of produced water is good; the ultrafiltration membrane can remove float sludge and harmful microorganisms in natural seawater, does not generate harmful by-products, does not bring harmful effects to an artificial breeding system, and can improve the survival rate of cultured aquatic products; the structure is reasonable and maintenance is simple. And different numbers of ultrafiltration membrane assemblies can be arranged so as to be suitable for different water yields.

Description

Technical Field

[0001] This utility model specifically relates to an ultrafiltration device for treating marine aquaculture source water. Background Technology

[0002] In recent years, my country's demand for seafood has been increasing year by year, and the scale of aquaculture has also been expanding. Currently, my country's total aquaculture output ranks among the top in the world. Natural seawater contains plankton, algae, and microorganisms with vigorous metabolism and rapid reproduction. Therefore, it is necessary to sterilize and disinfect natural seawater obtained from the ocean to prevent it from carrying harmful microorganisms into artificial aquaculture systems, disrupting the microecological balance of the aquaculture water, and even causing serious consequences such as fish diseases. In addition, natural seawater also contains a large amount of silt and impurities, especially after strong winds and waves. If these microorganisms and silt are not removed, they may cause significant harm to seedling production.

[0003] For floating silt and impurities in natural seawater, methods such as sand filtration and coagulation sedimentation are generally used for removal. For viruses, bacteria, and other microorganisms present in natural seawater, sodium hypochlorite, chlorine dioxide, and formaldehyde are commonly used as disinfectants. However, these methods result in high residual chlorine levels in the treated seawater, and chlorine disinfection produces some harmful byproducts. For example, since the 1970s, it has been discovered that chlorine disinfection produces halomethanes and haloacetic acids with carcinogenic, mutagenic, and teratogenic effects; at the end of the 20th century, a series of disinfection byproducts with even higher toxicity, such as halofuranones, haloacetonitrs, and halonitromethanes, were subsequently discovered. Ultraviolet (UV) sterilizers are also widely used in natural seawater disinfection. However, due to limitations in its process principle, UV disinfection has the following drawbacks: UV sterilization is only effective during irradiation; once the treated water leaves the sterilizer, it loses its residual disinfection capacity and is susceptible to secondary contamination. Even if a bacterium is not inactivated and enters a downstream system, it cannot prevent it from adhering to the surface of downstream pipes and multiplying. Only microorganisms that absorb UV light are inactivated; therefore, for water with high suspended solids and poor water quality, such as sewage, the disinfection effect is difficult to guarantee because suspended solids can protect microorganisms from harm. Furthermore, bacteria are not removed in the UV sterilizer but are transformed into pyrogens; the killed microorganisms and other pollutants become food for the surviving bacteria.

[0004] Membrane technology is applied to the pretreatment and purification of natural seawater. Through the high-efficiency sieving of membranes, almost all bacteria, pyrogens, viruses, colloidal particles, proteins, and large organic molecules in the solution can be retained. Ultrafiltration membranes can retain pathogenic microorganisms such as bacteria and viruses solely through physical retention, without the addition of chemical agents. Therefore, they do not produce harmful substances and have no adverse effects on subsequent aquaculture systems, thus improving the survival rate of farmed aquatic products. However, an ultrafiltration membrane core alone, without the accompanying equipment, is insufficient. Therefore, there is an urgent need for a flexible and simple-structured ultrafiltration device for treating seawater sources used in aquaculture. Utility Model Content

[0005] The purpose of this invention is to provide an ultrafiltration device for treating marine aquaculture source water.

[0006] The technical solution of this utility model is as follows:

[0007] A marine aquaculture source water treatment ultrafiltration device includes a frame and at least one ultrafiltration membrane module, an inlet pipe, a product water pipe and a sewage discharge pipe installed on the frame.

[0008] In at least one ultrafiltration membrane module, each ultrafiltration membrane module is vertically mounted on the frame. Each ultrafiltration membrane module has a water inlet at the lower end, a water product outlet and a wastewater outlet at the upper end.

[0009] The water inlet pipeline includes a main water inlet pipe and at least one water inlet branch pipe. One end of the main water inlet pipe is connected to one end of the at least one water inlet branch pipe, and the other end is connected to a marine aquaculture source water storage device. The other end of the at least one water inlet branch pipe is connected to at least one of the above-mentioned water inlets.

[0010] The water production pipeline includes a main water production pipe and at least one water production branch pipe. One end of the main water production pipe is connected to one end of the at least one water production branch pipe, and the other end is connected to downstream equipment. The other end of the at least one water production branch pipe is correspondingly connected to at least one of the aforementioned water production holes.

[0011] The sewage pipeline includes a main sewage pipe and at least one branch sewage pipe. One end of the main sewage pipe is connected to one end of the at least one branch sewage pipe, and the other end is connected to downstream sewage treatment equipment. The other end of the at least one branch sewage pipe is correspondingly connected to at least one of the aforementioned sewage outlets.

[0012] In a preferred embodiment of the present invention, the ultrafiltration membrane in the ultrafiltration membrane assembly is an internal pressure hollow fiber ultrafiltration membrane.

[0013] In a preferred embodiment of this utility model, one end of the main inlet pipe is connected to a seawater aquaculture source water storage device via an inlet connector and an inlet valve, one end of the main outlet pipe is connected to downstream equipment via an outlet connector and an outlet valve, and one end of the main outlet pipe is connected to downstream sewage treatment equipment via an outlet connector and an outlet valve.

[0014] More preferably, the inlet connector includes a pagoda connector, a straight pipe connector, a union, or a threaded interface; the product water connector includes a pagoda connector, a straight pipe connector, a union, or a threaded interface; and the drain connector includes a pagoda connector, a straight pipe connector, a union, or a threaded interface.

[0015] In a preferred embodiment of this utility model, the diameter of the main inlet pipe is larger than the diameter of the branch inlet pipe, the diameter of the main product water pipe is larger than the diameter of the branch product water pipe, and the diameter of the main drain pipe is larger than the diameter of the branch drain pipe.

[0016] In a preferred embodiment of this utility model, the inlet main pipe, the product main pipe and the sewage main pipe are parallel to each other and perpendicular to the ultrafiltration membrane module.

[0017] More preferably, the main inlet pipe, the main outlet pipe, and the main drain pipe are all perpendicular to at least one inlet branch pipe and at least one outlet branch pipe.

[0018] More preferably, the main water production pipe is located above the ultrafiltration membrane module, the main water inlet pipe is located below the ultrafiltration membrane module, the water inlet hole is located at the lower end of the ultrafiltration membrane module, and the water production hole and the drain hole are both located at the upper end of the ultrafiltration membrane module.

[0019] In a preferred embodiment of this utility model, the bottom of the frame is provided with a plurality of movable pulleys.

[0020] The beneficial effects of this utility model are:

[0021] 1. This utility model uses an ultrafiltration membrane as its core, which has high filtration accuracy and produces good water quality. The ultrafiltration membrane can remove floating mud and harmful microorganisms in natural seawater without producing harmful by-products. It will not have any harmful impact on the artificial aquaculture system and can improve the survival rate of aquatic products.

[0022] 2. This utility model has a reasonable structure and is easy to maintain. Different numbers of ultrafiltration membrane modules can be set to suit different water production rates.

[0023] 3. The main sewage pipe of this utility model is connected to the downstream sewage treatment equipment through a sewage connector and a sewage valve. If the influent water quality is good, dead-end filtration can be used to improve the water recovery rate and reduce energy consumption. If the influent water quality is poor, cross-flow filtration can be used to alleviate membrane fouling and reduce the frequency of membrane core cleaning.

[0024] 4. In this utility model, the main water production pipe is located above the ultrafiltration membrane module, the main water inlet pipe is located below the ultrafiltration membrane module, the water inlet hole is located at the lower end of the ultrafiltration membrane module, and the water production hole and the drain hole are located at the upper end of the ultrafiltration membrane module, so that the water flow direction of the equipment is bottom inlet and top outlet, which facilitates the venting of the ultrafiltration membrane module. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0026] Figure 2 This is a front view of the present invention.

[0027] Figure 3 This is a side view of the present invention.

[0028] Figure 4 This is a top view of the present invention. Detailed Implementation

[0029] The technical solution of this utility model will be further explained and described below with reference to specific embodiments and accompanying drawings.

[0030] like Figures 1 to 4 As shown, a marine aquaculture source water treatment ultrafiltration device includes a frame 1 and a four-ultrafiltration membrane module 2, an inlet pipe 3, a product water pipe 4 and a sewage pipe 5 installed on the frame 1.

[0031] The frame 1 has several movable casters 10 at the bottom for easy movement;

[0032] Four ultrafiltration membrane modules 2, wherein the ultrafiltration membrane is an internal pressure hollow fiber ultrafiltration membrane, each ultrafiltration membrane module 2 is vertically mounted on the frame 1, and each ultrafiltration membrane module 2 has a water inlet 21 at the lower end, a water product 22 and a wastewater discharge 23 at the upper end, and the four ultrafiltration membrane modules 2 are arranged parallel to each other and are vertically mounted on the frame 1 by bolts. The water inlet 21 is located at the lower end of the ultrafiltration membrane module 2, and the water product 22 and wastewater discharge 23 are located at the upper end of the ultrafiltration membrane module 2.

[0033] The water inlet pipe 3 includes a main water inlet pipe 31 and four branch water inlet pipes 32 corresponding to the water inlet holes 21 of the four ultrafiltration membrane modules 2. One end of the main water inlet pipe 31 is connected to one end of the four branch water inlet pipes 32, and the other end is connected to the seawater aquaculture source water storage device through a water inlet connector 311 and a water inlet valve 312. The diameter of the main water inlet pipe 31 corresponding to the four water inlet holes 21 is larger than the diameter of the branch water inlet pipes 32.

[0034] The water production pipeline 4 includes a main water production pipe 41 and four water production branch pipes 42 corresponding to the water production holes 22 of the four ultrafiltration membrane modules 2. One end of the main water production pipe 41 is connected to one end of the four water production branch pipes 42, and the other end is connected to the downstream equipment through a water production connector 411 and a water production valve 412. The diameter of the main water production pipe 41 corresponding to the four water production holes 22 is larger than the diameter of the water production branch pipes 42.

[0035] The sewage discharge pipeline 5 includes a main sewage discharge pipe 51 and four branch sewage discharge pipes (not shown in the figure) corresponding to the sewage discharge holes 23 of the four ultrafiltration membrane modules 2. One end of the main sewage discharge pipe 51 is connected to one end of the four branch sewage discharge pipes, and the other end is connected to the downstream sewage treatment equipment through a sewage discharge connector 511 and a sewage discharge valve 512. The other end of the four branch sewage discharge pipes is connected to the four sewage discharge holes 23. The diameter of the main sewage discharge pipe 51 is larger than the diameter of the branch sewage discharge pipes. If the influent water quality is good, dead-end filtration can be used to improve the water recovery rate and reduce energy consumption. If the influent water quality is poor, cross-flow filtration can be used to alleviate membrane fouling and reduce the frequency of membrane core cleaning. The branch sewage discharge pipes are preferably flexible hoses.

[0036] The aforementioned inlet main pipe 31, product water main pipe 41, and drain main pipe 51 are parallel to each other and perpendicular to the four-stage ultrafiltration membrane assembly 2. Furthermore, the inlet main pipe 31, product water main pipe 41, and drain main pipe 51 are all perpendicular to the four inlet branch pipes 32 and four product water branch pipes 42. In addition, the product water main pipe 41 is located above the four-stage ultrafiltration membrane assembly 2, and the inlet main pipe 31 is located below the four-stage ultrafiltration membrane assembly 2. During the initial water intake, gas can easily be discharged from the product water pipe 4, thereby filling the inner cavity of the membrane shell of the ultrafiltration membrane assembly 2 with water.

[0037] The above-mentioned inlet connector 311 includes pagoda connectors, straight pipe connectors, unions, and threaded interfaces; the above-mentioned product water connector 411 includes pagoda connectors, straight pipe connectors, unions, and threaded interfaces; the above-mentioned drain connector 511 includes pagoda connectors, straight pipe connectors, unions, and threaded interfaces.

[0038] This invention uses an ultrafiltration membrane as its core, achieving high filtration precision and producing high-quality water. The ultrafiltration membrane can remove floating sludge and harmful microorganisms from natural seawater without producing harmful byproducts, and it will not have any harmful impact on artificial aquaculture systems, thus improving the survival rate of farmed aquatic products. Furthermore, the equipment has a reasonable structure, is easy to maintain, and can be configured with different numbers of ultrafiltration membrane modules 2 to suit different water production volumes.

[0039] The above description is only a preferred embodiment of the present utility model, and therefore cannot be used to limit the scope of the present utility model. All equivalent changes and modifications made in accordance with the scope of the present utility model patent and the contents of the specification should still fall within the scope of the present utility model.

Claims

1. A marine aquaculture source water treatment ultrafiltration device, characterized in that: It includes a frame and at least one ultrafiltration membrane module, an inlet water pipe, a product water pipe and a sewage pipe mounted on the frame; In at least one ultrafiltration membrane module, each ultrafiltration membrane module is vertically mounted on the frame. Each ultrafiltration membrane module has a water inlet at the lower end, a water product outlet and a wastewater outlet at the upper end. The water inlet pipeline includes a main water inlet pipe and at least one water inlet branch pipe. One end of the main water inlet pipe is connected to one end of the at least one water inlet branch pipe, and the other end is connected to a marine aquaculture source water storage device. The other end of the at least one water inlet branch pipe is connected to at least one of the above-mentioned water inlets. The water production pipeline includes a main water production pipe and at least one water production branch pipe. One end of the main water production pipe is connected to one end of the at least one water production branch pipe, and the other end is connected to downstream equipment. The other end of the at least one water production branch pipe is correspondingly connected to at least one of the aforementioned water production holes. The sewage pipeline includes a main sewage pipe and at least one branch sewage pipe. One end of the main sewage pipe is connected to one end of the at least one branch sewage pipe, and the other end is connected to downstream sewage treatment equipment. The other end of the at least one branch sewage pipe is correspondingly connected to at least one of the aforementioned sewage outlets.

2. The ultrafiltration equipment for treating marine aquaculture source water as described in claim 1, characterized in that: The ultrafiltration membrane in the ultrafiltration membrane module is an internal pressure hollow fiber ultrafiltration membrane.

3. The ultrafiltration equipment for treating marine aquaculture source water as described in claim 1, characterized in that: One end of the main inlet pipe is connected to the marine aquaculture source water storage equipment via an inlet connector and an inlet valve. One end of the main outlet pipe is connected to the downstream equipment via a outlet connector and an outlet valve. One end of the main outlet pipe is connected to the downstream sewage treatment equipment via a discharge connector and a discharge valve.

4. The ultrafiltration equipment for treating marine aquaculture source water as described in claim 3, characterized in that: The inlet connectors include pagoda connectors, straight pipe connectors, unions, and threaded interfaces; the product water connectors include pagoda connectors, straight pipe connectors, unions, and threaded interfaces; and the drain connectors include pagoda connectors, straight pipe connectors, unions, and threaded interfaces.

5. The ultrafiltration equipment for treating seawater aquaculture source water as described in claim 1, characterized in that: The diameter of the main inlet pipe is larger than that of the branch inlet pipes, the diameter of the main product water pipe is larger than that of the branch product water pipes, and the diameter of the main drain pipe is larger than that of the branch drain pipes.

6. The ultrafiltration device for treating marine aquaculture source water as described in any one of claims 1 to 4, characterized in that: The inlet main pipe, the product main pipe, and the sewage main pipe are parallel to each other and perpendicular to the ultrafiltration membrane module.

7. The ultrafiltration equipment for treating marine aquaculture source water as described in claim 6, characterized in that: The main inlet pipe, the main outlet pipe, and the main drain pipe are all perpendicular to at least one inlet branch pipe and at least one outlet branch pipe.

8. The ultrafiltration equipment for treating seawater aquaculture source water as described in claim 6, characterized in that: The main water supply pipe is located above the ultrafiltration membrane module, the main water inlet pipe is located below the ultrafiltration membrane module, the water inlet is located at the lower end of the ultrafiltration membrane module, and the water supply hole and the drain hole are both located at the upper end of the ultrafiltration membrane module.

9. The ultrafiltration equipment for treating marine aquaculture source water as described in claim 1, characterized in that: The bottom of the frame is equipped with several movable pulleys.

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