An Aquatic Animal Enhanced Surface Flow Constructed Wetland

A technology for artificial wetlands and aquatic animals, applied in the direction of 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: 2016-09-07
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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  • An Aquatic Animal Enhanced Surface Flow Constructed Wetland
  • An Aquatic Animal Enhanced Surface Flow Constructed Wetland
  • An Aquatic Animal Enhanced Surface Flow Constructed Wetland

Examples

Experimental program
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Effect test

Embodiment 1

[0014] Example 1: The aquatic animal-enhanced surface flow constructed wetland with the field-shaped structure of the present invention consists of water inlet pipe 1, water distribution plate 2, bed body 3, aquatic plants 4, fish slip 5, fish ditch 6, fish raft 7, The outlet pipe 8 is composed. The wetland bed is filled with light and medium soil. First, excavate a 0.4-0.5m radius and 0.3-0.4m deep water trench on the surface of the bed 3 as a fish trench 6. In addition, excavate an approximate circular shape with a radius of 1.5-2m and a depth of 1 meter in the middle of the bed. Puddle, as a fish slip 5. The total area of ​​fish ditch and fish slips accounts for about 20%-30% of the bed area. Fish ditch and fish slide are used as hiding places for loach and snails at high or low temperature, and can also increase the contact area between the water body and the bed 3, and increase the sewage treatment time of the wetland. Fish slips are also used to catch loach. The water...

Embodiment 2

[0016] Example 2: The aquatic animal-enhanced surface flow constructed wetland with the I-shaped structure of the present invention consists of water inlet pipe 1, perforated water cloth plate 2, bed body 3, aquatic plants 4, fish slip 5, fish ditch 6, fish fence 7 , The outlet pipe is composed of 8, filled with light and medium soil. Loach with a body length of more than 10cm is placed in the wetland, and the number is 10-20 per square meter. At the same time, escargots weighing more than 5 grams are released, and the amount of snails is 100-200 grams per square meter. The bed is longitudinally dug with a ditch of 0.4-0.5m in radius and 0.3-0.4m in depth as a fish ditch, and a rectangular puddle with a width of 1-1.5m and a depth of 1 meter is dug in the middle of the bed to serve as a fish slip. The total area of ​​the fish ditch and the fish slips accounts for about 20%-30% of the bed area, and serves as a shelter for loach and snails. Fish ditch and fish slide can simultan...

Embodiment 3

[0017] Example 3: The concave structure of the aquatic animal-enhanced surface flow constructed wetland bed body of the present invention consists of an inlet pipe 1, a perforated water plate 2, a bed body 3, aquatic plants 4, a fish slip 5, a fish ditch 6, and a fish fence 7 , The outlet pipe is composed of 8, filled with light and medium soil. Put the loach over 10cm in length in the wetland, the number is 10-20 per square meter. At the same time, escargots weighing more than 5 grams are released, and the amount of snails is 100-200 grams per square meter. A puddle with a radius of 0.4-0.5m and a depth of 0.3-0.4m is dug into 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 into the inner side of the water inlet and the water outlet of the bed as a fish. The total area of ​​the fish ditch and the fish slips accounts for about 20%-30% of the bed area and serves as a habitat for loach and snails...

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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 constructed wetland that utilizes aquatic animals to strengthen treatment of domestic sewage. 2. Background technology [0002] Constructed wetland is an ecosystem that imitates natural wetland constructed and operated by man-made, using the triple synergy of physics, chemistry and biology in the system, through filtration, adsorption, co-precipitation, ion exchange, plant absorption and microbial decomposition Various animals work together to achieve high-efficiency purification of sewage. [0003] Surface flow constructed wetlands are composed 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 Spine of aquatic animals. Surface constructed wetland is the closest to the natural environm...

Claims

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Application Information

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Patent Type & Authority Patents(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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