CN207811495U - A kind of simple fishpond sewage disposal system - Google Patents

Abstract

The utility model discloses a kind of simple fishpond sewage disposal systems, including sedimentation basin successively, the sedimentation basin is connect by water-supply-pipe with purification filtering circuit, the structure of the sedimentation basin, including the water inlet pipe being arranged on sedimentation basin, the sedimentation basin is close to the setting of the position of water-supply-pipe there are one water decanter, and the relative position of the water inlet pipe is also set up there are one drain hole and mudhole, and the sedimentation basin and purification circuit are arranged in fishpond bank.Solve the problems, such as fishpond severe water pollution.

Description

A Simple Fish Pond Sewage Treatment System

technical field

The utility model belongs to the field of fish pond pollution control and relates to a simple sewage treatment system for fish ponds.

Background technique

Due to the large amount of fish farming in the box type, fish excrement and residual bait accumulate in large quantities, which will increase the growth of saprophytic bacteria, cause the deterioration of water quality, produce carbides, make the pool water dirty, green and smelly, affecting the view, Harmful to the health of fish. Moreover, it will cause a large number of green algae to multiply, consume the only oxygen in the pool, and make it easier for fish to be hypoxic. If the water is changed frequently, it will cause frequent changes in temperature, pH and dissolved oxygen, which will affect the reproduction and nitrification of beneficial fungi; excessive changes in water quality and water temperature will affect the growth of fish and endanger the health of fish.

Conventional high-density farming methods, the concentration of ammonia nitrogen and active phosphate increased by 7.3 and 10.3 times compared with ordinary ponds, causing eutrophication of pond water quality, water quality COD exceeding the standard, water quality deterioration caused by excessive reproduction of harmful algae and bacteria, residual bait And feces accumulated at the bottom of the pond can not effectively decompose and oxidize to produce a variety of harmful factors. Bacterial infection and environmental stress caused by the deterioration of the aquatic animal environment have brought huge losses to the freshwater aquaculture industry. At the same time, the cost of pollution control in the later stage is relatively large.

Based on the above reasons and following the principles of "energy saving, emission reduction, pollution reduction, and efficiency enhancement", the project plans to treat and reuse box-type fish farming manure to improve the water quality of fish ponds and achieve zero discharge of wastewater.

Utility model content

The purpose of the utility model is to provide a simple fish pond sewage treatment system to solve the problem of serious water pollution in fish ponds.

The technical solution adopted by the utility model is: a simple sewage treatment system for fish ponds, including sedimentation tanks in turn, the sedimentation tanks are connected with the purification and filtration loop through water pipes, the structure of the sedimentation tanks, including the water inlet pipes arranged on the sedimentation tanks, A decanter is installed near the water delivery pipe in the pool, and an emptying hole and a mud discharge hole are arranged at the relative position of the water inlet pipe. The sedimentation tank and the purification ring are arranged on the bank of the fish pond.

The utility model is also characterized in that,

The purification and filtration ring road includes four corridors arranged in parallel. These four corridors are connected in sequence. Each corridor adopts a different filtration and purification structure. The four corridors are: horizontal underflow wetland corridor A, horizontal underflow wetland corridor Road B, horizontal subsurface flow wetland corridor C, horizontal subsurface flow wetland corridor D.

Corridor A of the horizontal subsurface wetland is the filter brush area, and its structure is shown in the figure. In this section, there are filter brush groups, and a group of filter brush groups is set every 10cm, and each group has 10 brushes. A group of brushes is hung on the side wall of the horizontal underflow wetland corridor A through holes in angle iron or plastic pipes, forming a 4-meter brush filtering area.

The filter brush adopts a cross hair brush with a diameter of 12cm and a length of 80cm, and the area is covered with a black shading plate.

The horizontal subsurface flow wetland corridor B is a biochemical cotton purification area. One piece is set every meter in the length direction of the horizontal subsurface flow wetland corridor B, with an interval of 30 cm, forming a 4-meter biological cotton filtration purification area.

The size of biochemical cotton is 1m*1m and the thickness is 20cm. It is divided into transparent biochemical cotton and rattan cotton. The bio-cotton is colonized to form a nitrifying bacteria film to purify water quality. The bottom of the corridor is laid with quartz sand and ceramsite.

Corridor C of the horizontal subsurface flow wetland is a microbial floating cloth area, where multiple microbial floating cloths are installed. The microbial floating cloths are suspended and fixed in the corridor by using angle iron or plastic pipes. The lower end of the floating cloths is filled with sand and soil in plastic pipes. It hangs vertically in the water. Between multiple microbial floating cloths, intervals are arranged in a staggered manner.

The size of the microbial floating cloth is 0.8m wide and 60cm high. Microbial floating cloth is made of permeable geotextile.

Horizontal subsurface flow wetland corridor D is the planting section of ceramsite emergent plants, which is filled with large-sized and medium-sized mixed ceramsite. The ceramsite is partitioned by hollow brick walls. Two layers of hollow bricks are laid on the bottom and 50cm ceramsite is laid on the top.

The beneficial effects of the utility model are: a simple fish pond sewage treatment system of the utility model has simple structure, convenient operation and strong practicability. The water is pumped ashore through the filtration method, passes through the sedimentation tank, and the filtration ring is used to settle and filter the sewage, so that the sewage can be returned to the pool after being filtered. The recirculating aquaculture system that forms a semi-enclosed energy-saving and emission-reducing self-purification system solves the long-standing problem of lack of effective fish manure treatment methods in the aquaculture industry, which leads to serious water pollution, and forms a semi-enclosed energy-saving emission reduction system. The circulating aquaculture system of the self-purification system realizes zero discharge of sewage.

Description of drawings

Fig. 1 is the structural representation of the simple and easy fishpond sewage treatment system of the present utility model;

Fig. 2-1 is the schematic cross-sectional structure diagram of the sedimentation tank in the simple fishpond sewage treatment system of the present utility model;

Fig. 2-2 is the schematic plan view of the sedimentation tank in the simple fishpond sewage treatment system of the present invention;

Fig. 2-3 is the sectional structure schematic diagram of the settling tank in the simple fishpond sewage treatment system of the present utility model;

Fig. 3 is the structural representation of the filter brush area in the simple fishpond sewage treatment system of the present utility model;

Fig. 4 is the structural representation of the filter biochemical cotton in the simple and easy fish pond sewage treatment system of the present utility model;

Figure 5-1 is a schematic diagram of the overall structure of the biological floating cloth area in the simple fish pond sewage treatment system of the present invention;

Figure 5-2 is a schematic cross-sectional structure diagram of the biological floating cloth area in the simple fish pond sewage treatment system of the present invention;

Fig. 6 is a schematic structural view of the ceramsite emergent plant purification zone in the simple fish pond sewage treatment system of the present invention.

In the figure, 1. Sedimentation tank, 2. Decanter, 3. Water inlet area, 4. Water outlet area, 5. Water delivery pipe, 6. Purification and filtration loop, 31. Water inlet pipe, 32. Empty valve, 33. Mud discharge valve, 41. Outlet pipe, 51. Valve A, 52. Valve B, 61. Horizontal subsurface flow wetland corridor A, 62. Horizontal subsurface flow wetland corridor B, 63. Horizontal subsurface flow wetland corridor C, 64. Horizontal subsurface flow Wetland corridor D, 611. Brush group, 631. Microbial floating cloth, 632. Fixing device, 641. Water ceramsite, 642. Hollow brick.

Detailed ways

The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

The simple fish pond sewage treatment system of the utility model comprises a settling tank 1 in turn, and the settling tank 1 is connected with a purification and filtration loop 6 through a water delivery pipe,

The structure of the sedimentation tank, as shown in Figure 2-1, Figure 2-2 and Figure 2-3, includes a water inlet pipe 31 arranged on the sedimentation tank, and a decanter 2 is installed near the water delivery pipe 5 in the sedimentation tank to feed The relative position of the water pipe 31 is also provided with an emptying hole 32 and a mud discharge hole 33. The emptying hole is used for the emptying hole to be used for maintenance and cleaning. For use, a screen is provided in the sedimentation tank to filter larger impurities in the water flowing out of the water inlet pipe.

The purification and filtration ring 6 includes four sections of corridors arranged in parallel, and these four sections of corridors are connected in sequence, and each section of corridors adopts a different filtration and purification structure to treat sewage sequentially.

The four corridors are: horizontal underflow wetland corridor A61, horizontal underflow wetland corridor B62, horizontal underflow wetland corridor C63, and horizontal underflow wetland corridor D64.

Wherein, the horizontal underflow wetland corridor A61 is a filtering brush area, and its structure is as shown in Figure 3. In this section, a filtering brush group 611 is arranged, and a group of filtering brush groups 611 is set every 10 cm, and each group is 10 Strip brush, the brush is made of non-toxic food-grade polyethylene material, and the filter brush is a cross-hair brush with a diameter of 12cm and a length of 80cm. Each group of brushes is hung on the side wall of the horizontal subsurface flow wetland corridor A61 through angle iron or plastic pipe holes to form a 4-meter brush filtering area, which is covered with black shading boards. The brush mainly filters organic suspended solids and colonizes nitrifying bacteria, and is convenient for extracting and washing suspended solids.

The horizontal subsurface flow wetland corridor B62 is the biochemical cotton purification area, as shown in Figure 4: the size of the biochemical cotton is 1m*1m and the thickness is 20cm, which is divided into transparent biochemical cotton and rattan cotton. Set up one block for each meter in the length direction of the horizontal subsurface flow wetland corridor B62. The interval is 30cm. A 4-meter bio-cotton filter purification zone is formed. The bio-cotton is colonized to form a nitrifying bacteria film to purify water quality.

The bottom of the corridor is laid with quartz sand and ceramsite.

Corridor C63 of the horizontal subsurface wetland is a microbial floating cloth area. As shown in Figure 5, multiple microbial floating cloths are installed at this position. The size of the microbial floating cloth is 0.8m wide and 60cm high. The microbial floating cloth is suspended and fixed in the corridor by using the fixing device 632 (such as angle iron or plastic pipe). The microbial floating cloth is made of water-permeable geotextile, and the lower end of the floating cloth is filled with sand and soil in a plastic pipe to make it vertically suspended in the water.

A plurality of microbial floating cloths 631 are arranged in a staggered manner with an interval of 50 cm. Make the water flow bend and flow between the floating cloths. The microbial group carrier is formed, so that the water flow can fully contact with the floating cloth microbial group when passing through the floating plates, and the decomposition, absorption and transformation of ammonia nitrogen organic matter in the water by microorganisms can be improved.

The horizontal subsurface flow wetland corridor D64 is the planting section of ceramsite emergent plants: as shown in Figure 6, it is filled with large-scale and medium-scale mixed water ceramsite 641, and the ceramsite is separated by hollow brick walls. Two layers of hollow bricks 642 are laid on the bottom, and 50cm ceramsite is laid on the top. And plant evergreen aquatic plants with well-developed root system in sections in the corridor. Utilize the roots of emergent aquatic plants to absorb nitrogen and phosphorus organic matter dissolved in water. Emerging aquatic plant varieties in evergreen landscape are arranged in sections in this section, such as water onion, calamus, and centrum, etc. are selected.

When carrying out sewage purification, the following method is adopted, and the specific steps are:

Step 1. Use pumping equipment to pump water ashore, and let the sewage enter the sedimentation tank in Figure 1 for sedimentation. Screen filtration first removes large suspended solids such as leaves and garbage, and then uses physical sedimentation technology to further remove suspended solids.

Step 2, the sewage after sedimentation flows through the purification loop,

The purification ring includes four parts, which are the horizontal underflow wetland corridor A61, the horizontal underflow wetland corridor B62, the horizontal underflow wetland corridor C63, and the horizontal underflow wetland corridor D64. The purification ring adopts thick plastic drainage pipes, and the upper part of the pipes is horizontal. Cut off 1/3, lay quartz sand and ceramsite at the bottom of the pipeline, and plant evergreen aquatic plants with well-developed root system in sections on the water surface of the upper part of the pipeline.

Step 3, the treated water reflows into the fish pond from the water outlet of the horizontal subsurface flow wetland corridor 4 in Fig. 1 to complete the purification process of the fish pond sewage.

Sedimentation tanks and horizontal underflow wetland corridors are arranged on the bank of fish ponds to facilitate sewage suction and filtration. Quartz sand filtration mainly removes fine suspended organic matter and nutrients such as N and P. It has the characteristics of small filtration resistance, large specific surface area, strong acid and alkali resistance, and good pollution resistance. It can effectively remove suspended solids in water, and has obvious removal effect on colloids, iron, organic matter, pesticides, manganese, bacteria, viruses and other pollutants in water. It has the advantages of fast filtration speed, high filtration precision and large sewage interception capacity. At the same time, the root system of emergent aquatic plants is used to absorb nitrogen and phosphorus organic matter dissolved in water, and evergreen landscape emergent aquatic plant species are arranged in the horizontal subsurface flow wetland corridor, such as water onion, calamus, and chrysanthemum, etc. are selected.

The beneficial effect of the utility model is that it can solve the long-standing problems of fish pond water quality deterioration in the pond culture mode, difficulty in purifying and remediating the culture water quality, high incidence of fish diseases, power consumption and water consumption.

Claims (9)

1. A kind of simple and easy fishpond sewage treatment system is characterized in that, comprises settling tank (1) successively, and described settling tank (1) is connected with purifying filter loop (6) by water delivery pipe, the structure of described settling tank , including the inlet pipe (31) arranged on the sedimentation tank, the position of the sedimentation tank near the water delivery pipe (5) is provided with a decanter (2), and the relative position of the water inlet pipe (31) is also provided with An emptying hole (32) and mud draining hole (33). 2. The simple fish pond sewage treatment system according to claim 1, characterized in that, said purifying and filtering loop (6) comprises four sections of corridors arranged in parallel, and these four sections of corridors are connected successively, and in each section of corridors Using different filtration and purification structures, the four sections of corridors are: horizontal subsurface flow wetland corridor A (61), horizontal subsurface flow wetland corridor B (62), horizontal subsurface flow wetland corridor C (63), horizontal subsurface flow wetland corridor Corridor D (64). 3. The simple fish pond sewage treatment system according to claim 2, characterized in that, the horizontal underflow wetland corridor A (61) is a filter brush area, and a filter brush group (611) is arranged in this section ), the filter brush group (611) is provided with a group every 10cm, and each group has 10 hair brushes, and each group of hair brushes is hung in the horizontal underflow wetland corridor A (61) by punching holes in angle iron or plastic pipes. On the side wall, a brush filter area of 4 meters is formed. 4. The simple sewage treatment system for fish ponds according to claim 3, characterized in that the filter brush is a cross-hair brush with a diameter of 12cm and a length of 80cm, and the area is covered with a black shading plate. 5. The simple sewage treatment system for fish ponds according to claim 2, characterized in that, the horizontal underflow wetland corridor B (62) is a biochemical cotton purification area, in the length direction of the horizontal underflow wetland corridor B (62) One piece is set every meter above, with an interval of 30cm, forming a 4-meter bio-cotton filtration and purification area. 6. The simple sewage treatment system for fish ponds according to claim 5, characterized in that the size of the biochemical cotton is 1m*1m and the thickness is 20cm, which is divided into transparent biochemical cotton and rattan cotton, and the biochemical cotton is colonized to form nitrifying bacteria The membrane purifies the water quality, and the bottom of the corridor is laid with quartz sand and ceramsite. 7. The simple fishpond sewage treatment system according to claim 2, characterized in that, the horizontal subsurface flow wetland corridor C (63) is a microbial floating cloth area, and a plurality of microbial floating cloths are arranged at this position, and the described The microbial floating cloth (631) is suspended and fixed in the corridor by using a fixing device (632). The lower end of the floating cloth is filled with sand and soil in a plastic tube to make it vertically suspended in the water. , spaced in a staggered arrangement. 8. The simple fish pond sewage treatment system according to claim 7, characterized in that, the size of the microbial floating cloth is 0.8m wide and 60cm high, and the microbial floating cloth (631) is made of permeable geotextile , the fixing device (632) is a plastic pipe or an angle iron. 9. The simple sewage treatment system for fishponds according to claim 2, characterized in that, the horizontal underflow wetland corridor D (64) is a ceramsite emergent plant planting section, which is filled with large-scale and medium-scale mixed water Ceramsite (641), ceramsite is partitioned by hollow brick walls, two layers of hollow bricks (642) are laid on the bottom, and 50cm ceramsite is laid on the top.