Aquatic animal enhanced surface flow artificial wetland

A technology for artificial wetlands and aquatic animals, applied in sustainable biological treatment, chemical instruments and methods, biological water/sewage treatment, etc., can solve the problems of incomplete wetland ecosystem, lack of animal feeding and utilization, and low removal rate of nitrogen and phosphorus , to achieve convenient operation and maintenance management, reduce the accumulation of sediment organic matter, and increase the effect of adsorption and degradation capacity

Active Publication Date: 2015-08-05
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with other wetland types, the contact area between water body and wetland bed in common surface flow constructed wetland is relatively small, and the removal rate of nitrogen and phosphorus is relatively low
Moreover, the current artificial surface flow wetland lacks the use of animals when it is constructed, and the wetland ecosystem is not complete.

Method used

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  • Aquatic animal enhanced surface flow artificial wetland
  • Aquatic animal enhanced surface flow artificial wetland
  • Aquatic animal enhanced surface flow artificial wetland

Examples

Experimental program
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Effect test

Embodiment 1

[0014] Embodiment 1: The surface flow artificial wetland for aquatic animals of the present invention is composed of water inlet pipe 1, water distribution plate 2, bed body 3, aquatic plants 4, fish slide 5, fish ditch 6, fish barrier 7, Outlet pipe 8 forms. The wetland bed is filled with light and medium soil. First, dig out a water ditch with a radius of 0.4-0.5m and a depth of 0.3-0.4m on the surface of the bed body 3 as the fish ditch 6, and dig out a near-circular shape with a radius of 1.5-2m and a depth of 1 meter in the middle of the bed body. Puddles, as fish slip 5. The total area of ​​the fish ditch and the fish slide accounts for about 20%-30% of the bed area. Fish ditches and fish slides are used as hiding places for loaches and snails to avoid when high or low temperature, and can also increase the contact area between the water body and the bed body 3, and increase the treatment time of the wetland to sewage. Fish slips are also used to catch loach. Inlet p...

Embodiment 2

[0016] Embodiment 2: The I-shaped structured aquatic animal-enhanced surface flow artificial wetland of the present invention consists of a water inlet pipe 1, a perforated water distribution plate 2, a bed body 3, aquatic plants 4, fish slides 5, fish ditch 6, and fish barrier 7 , Outlet pipe 8 is made up of, and is filled with light, medium soil, puts loach of body length more than 10cm in the wetland, and quantity is 10-20 tails per square meter. At the same time, snails with a weight of more than 5 grams are put in, and the amount of snails put in is 100-200 grams per square meter. The bed lengthwise digs out a water ditch with a radius of 0.4-0.5m and a depth of 0.3-0.4m as a fish ditch, and in the middle of the bed digs out another 1-1.5m wide and 1-meter-deep rectangular puddle as a fish slide. The total area of ​​the fish ditch and the fish slide accounts for about 20%-30% of the bed area, and they serve as shelters for loaches and snails. Fish ditch and fish slide ca...

Embodiment 3

[0017] Embodiment 3: The concave structure of the aquatic animal enhanced surface flow constructed wetland bed of the present invention consists of a water inlet pipe 1, a perforated water distribution plate 2, a bed body 3, aquatic plants 4, fish slides 5, fish ditch 6, and fish fence 7 , composed of 8 outlet pipes, filled with light and medium soil. Put 10-20 tails per square meter of loach with a body length of more than 10 cm in the wetland. At the same time, snails with a weight of more than 5 grams are put in, and the amount of snails put in is 100-200 grams per square meter. A water pit with a radius of 0.4-0.5m and a depth of 0.3-0.4m is dug longitudinally from the bed as a fish ditch. A square puddle with a length of 2-3 meters, a width of 1-1.5 meters and a depth of about 1 meter is dug out respectively inside the water inlet and the water outlet of the bed body as a fish slide. The total area of ​​the fish ditch and the fish slide accounts for about 20%-30% of the...

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Abstract

The invention provides an aquatic animal enhanced surface flow artificial wetland consisting of a water inlet pipe, a perforated water-distributing plate, a bed body, aquatic plants, fish ditches, fish pits, a fish screen and a water outlet pipe. The bed body of the wetland is filled with light and medium loams, the aquatic plants are planted on the bed body, water ditches are dug out on two side surfaces of the bed body to serve as the fish ditches, water pits are dug out in the middle of the surface flow artificial wetland or at two ends of the bed body to serve as the fish pits, and the total area of the fish ditches and the fish pits occupies 20-30% of the area of the bed body. Aquatic animals namely loaches and field snails are added into the wetland to improve the stability of microbial populations in a bed material of the wetland, increase the contact between bed mud and a water body, reduce the accumulation of organic matters of the bed mud, and significantly reduce the turbidity of the water body; and by using the fish ditches and the fish pits, the contact area between the bed body of the wetland and the water body can be increased, and the adsorbing and degrading capacities of the bed material of the wetland to pollutants in the water are increased.

Description

1. Technical field [0001] The invention belongs to the field of environmental protection, and relates to a surface flow artificial wetland for intensive treatment of domestic sewage by using aquatic animals. 2. Background technology [0002] Constructed wetlands are ecosystems that imitate natural wetlands that are artificially constructed and controlled to operate. Using the triple synergy of physics, chemistry and biology in the system, through filtration, adsorption, co-precipitation, ion exchange, plant absorption and microbial decomposition, and in wetlands Various animals work together to achieve efficient purification of sewage. [0003] Surface flow constructed wetlands consist of five parts: substrates with various water permeability, such as soil and sand; plants suitable for growing in saturated water and anaerobic substances, such as reeds; aerobic or anaerobic microbial populations; invertebrate or Vertebrate aquatic animals. Surface flow artificial wetlands a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/32
CPCY02W10/10
Inventor 张建李鹏飞张成禄谢慧君邱宪锋王倩马茹
Owner SHANDONG UNIV
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