Simulation method for removing submerged plant by using filter feeder

A simulation method and technology of submerged plants, applied in biological water/sewage treatment, sustainable biological treatment, chemical instruments and methods, etc., can solve the problems of unstable system, easy death of submerged plants, etc. The effect of improving water lighting conditions and low cost

Inactive Publication Date: 2015-09-09
NANJING INST OF GEOGRAPHY & LIMNOLOGY
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  • Abstract
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  • Application Information

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Problems solved by technology

Similarly, eutrophic lakes such as Taihu Lake, Chaohu Lake, Dianchi Lake and other eutrophic lakes have also made attempts in this regard. Some large lakes have prelimi

Method used

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  • Simulation method for removing submerged plant by using filter feeder
  • Simulation method for removing submerged plant by using filter feeder
  • Simulation method for removing submerged plant by using filter feeder

Examples

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Embodiment 1

[0022] The simulation method of embodiment 1 river clam's influence on the growth of bitter grass

[0023] The simulation method of the present invention includes the following processes:

[0024] (1) Sediment preparation: Sediment from Taihu Lake was passed through a 60-mesh stainless steel mesh screen and mixed thoroughly. Each dark blue high-strength polyethylene plastic bucket (height of the bucket was 70 cm, and the diameters of the upper and lower bottoms were 48 cm and 40 cm respectively). cm) divided into 10cm;

[0025] (2) Lake water preparation: filter and mix the lake water with a 500-mesh nylon screen, add half of the lake water to each bucket and clarify for 5 days, and then fill up after planting bitter grass;

[0026] (3) Preparation of bitter grass: select bitter grass plants with an average weight of 2.25-2.5g per plant; plant them in barrels after one week of planting, and plant 10 bitter grass plants in each barrel. The height of each barrel is 15-17 cm,...

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Abstract

The invention provides a simulation method for removing a submerged plant by using a filter feeder. The technical key point is characterized in that corbicula fluminea density is an influence factor of the experiments, four groups are set for processing, which are a contrast group, a low density set, a medium density group and a high density group. The density is set by referring natural abundance of Taihu Lake corbicula fluminea, the simulation method comprises steps of deposit preparation, lake river preparation, tape grass preparation, addition in the tape grass experiments and sampling, and the submerged plant in the nutrition water body can be simulated for recovery. The method is capable of promoting the submerged plant growth and has important meaning for ecological recovery of the nutrition water body. The method has the advantages that accurate simulation of the submerged plant can be realized, technology is reliable and easy to operate, cost is low, submerged plant in the nutrition water body can be effectively recovered, and the method can be used for ecological restoration for the eutrophication water body (such as lake and pond).

Description

technical field [0001] The invention relates to the field of new environmental protection technologies, in particular to a simulation method for filter-feeding organisms to restore submerged plants. Background technique [0002] Eutrophication caused by excessive input of nutrients (mainly nitrogen and phosphorus) is one of the most widely concerned water environmental problems in the world. Many important large lakes such as Dianchi Lake, Taihu Lake and Chaohu Lake in my country are also facing environmental problems caused by eutrophication. The increase of nutrient input leads to abnormal increase of planktonic algae, reduction of submerged plants, reduction of biodiversity, serious degradation of ecosystem structure and function, and greatly reduces the service value of water ecosystem. Therefore, the key to eutrophic water body restoration is how to transfer nutrients from planktonic (mainly concentrated in planktonic algae) to bottom layer (submerged plants), so as to...

Claims

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Application Information

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IPC IPC(8): C02F3/32
CPCY02W10/10
Inventor 李宽意杨宏伟闵屾朱小龙谷娇靳辉
Owner NANJING INST OF GEOGRAPHY & LIMNOLOGY
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