Ecological treatment device and process for aquaculture wastewater
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An aquaculture and ecological treatment technology, applied in the fields of animal husbandry wastewater treatment, biological water/sewage treatment, adsorbed water/sewage treatment, etc., can solve problems such as neglect
Pending Publication Date: 2021-06-08
NANJING KESHENG ENVIRONMENTAL PROTECTION TECH
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[0005] At present, there are related treatment processes for aquaculture wastewater. The main treatment objects are organic matter, nitrogen, phosphorus and other nutritional factors in aquatic wastewater. However, antibiotic pollutants have been ignored in the research process. Therefore, the treatment effect is good and the operating cost The treatment method of aquatic wastewater with low pollution, convenient operation and management, comprehensive removal of pollution indicators, and environmental friendliness still needs further research and development.
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Embodiment 1
[0047] 5) The downstream vertical subsurface flow artificial wetland collects the purified wastewater to the outlet channel 9 through the water collecting pipe 14, and the aquaculture wastewater is treated, and the outlet water can be used continuously by aquaculture. Embodiment 1: a certain fish farming wastewater is treated
[0048] Example 1
[0049] To treat a fish farming wastewater, an ecological treatment process for aquaculture wastewater is proposed, combining Figure 1-3 , which includes regulating pool 1, triangular weir 2, water inlet channel 3, humic acid modified iron slag filler layer 4, fine gravel layer 5, perforated flower wall 5, aquatic plant layer 8, outlet channel 9, upflow wet ground cloth Water pipe 10, water distribution branch pipe 11 of upflow wetland water distribution pipe 10, downflow wetland water distribution pipe 7, water distribution branch pipe 11 of downflow wetland water distribution pipe 7, coarse gravel layer 12, volcanic rock layer 13, ...
Embodiment 2
[0051] To treat a certain shrimp farming wastewater, the object of this comparative example 2 is a certain shrimp farming wastewater, and the other conditions are the same as those in Example 1 except for the aquatic plants and treatment time.
[0052] Specifically, in the composite vertical subsurface flow constructed wetland of this embodiment, the planting density of aquatic plants is 16 plants / m 2 , the aquatic plants are canna and evergreen iris. The ratio of humic acid modified iron slag, fine crushed stone, volcanic rock and coarse crushed stone is 1:2:2:1. In the composite vertical subsurface flow constructed wetland, the specifications of the humic acid-modified iron slag filler layer, fine crushed stone layer, volcanic rock layer, and coarse crushed stone layer are 1cm, 2cm, 4cm, and 5cm, respectively. The specific steps are: pump the fish farming wastewater into the adjustment tank 1 through the sewage pump for pretreatment, and after the preliminary sedimentation,...
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Abstract
The invention relates to the technical field of wastewater treatment, and discloses an ecological treatment device for aquaculture wastewater. The device comprises an adjusting tank and a composite vertical subsurface flow constructed wetland, and the composite vertical subsurface flow constructed wetland is composed of an upstream vertical subsurface flow constructed wetland and a downstream vertical subsurface flow constructed wetland; the composite vertical subsurface flow constructed wetland sequentially comprises an aquatic plant layer, a humic acid modified iron-ore slag filler layer, a fine gravel layer, a volcanic rock layer and a coarse gravel layer from top to bottom; the upstream vertical subsurface flow constructed wetland further comprises an upstream wetland water distribution pipe; and the downstream vertical subsurface flow constructed wetland further comprises a downstream wetland water distribution pipe and a water collection pipe. The invention further provides an ecological treatment process for the aquaculture wastewater. According to the invention, a combined process of the adjusting tank, the composite constructed wetland and a humic acid modified iron-ore slag filler is adopted, and two technologies of a microbiological method and a chemical adsorption method are combined, so that nutrient substances and residual antibiotics in the aquaculture wastewater can be effectively reduced, and the purpose of improving the quality of the aquaculture wastewater is achieved.
Description
technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to an ecological treatment device and process for aquaculture wastewater. Background technique [0002] Along with the adjustment of my country's economic structure, the agricultural structure is also constantly developing and adjusting. Intensive aquaculture is developing rapidly. Although the development of the aquaculture industry has made great contributions to improving the living standards of urban and rural residents in my country, the wanton discharge of aquaculture wastewater has also caused new environmental pollution problems in my country, and it has developed from the previous point source to non-point source pollution, which is a major problem in rural areas. One of non-point source pollution. [0003] China is a big aquaculture country, and the aquaculture industry is developing towards intensive and refined farming. Among them, freshwater aq...
Claims
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