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Method for controlling eel grass surface attachments and moss

A technology of attachment and bitter grass, applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of risks and increased dosage of aquatic plants such as bitter grass, and achieve Maintain normal growth, slow down burst time and burst frequency, and facilitate recovery and stability

Inactive Publication Date: 2018-09-25
SHANGHAI TAIHE WATER ENVIRONMENTAL TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These drugs are easy to use and have quick effects, but there is drug resistance, the dosage is increasing year by year, and there is a risk to aquatic plants such as bitter grass

Method used

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  • Method for controlling eel grass surface attachments and moss
  • Method for controlling eel grass surface attachments and moss
  • Method for controlling eel grass surface attachments and moss

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1 The test of the influence of snails on the surface of Erytheria galerica attached to algae

[0031] 1. Experimental materials and methods

[0032] The experiment on the influence of snails on the algae adhered to the surface of Erythrina chinensis lasted for 20 days. The snails selected for the experiment were collected from a lake (with a total area of ​​5.56 km 2 , the average water depth is 3.7m, and the salinity of the water body is 2.8-4.4‰). After sampling, it is temporarily raised in a plastic bucket filled with tap water aerated for 3 days. The attached algae collection plate is a 3cm×3cm plastic plate with a smooth surface. The experimental containers are transparent cylindrical plexiglass cylinders with a height of 50 cm and an inner diameter of 15 cm.

[0033] In the experiment, a blank control group without snails and 5 groups with snails were set. The experimental groups of snails were set: 5g, 10g, 20g, 40g, 80g, and each experimental group wa...

Embodiment 2

[0052] Embodiment 2 is applied to the control of surface attachments and moss on the surface of bitter grass in Julong Lake, Yancheng, Jiangsu

[0053] Julong Lake in Yancheng, Jiangsu, with a water area of ​​260,000 m 2 , the water depth is 1.0-3.7 meters. Before the snails were put in to build a stable ecosystem, there were many surface attachments and mosses on the surface of Julong Lake, the water head landscape effect was not good, and the water transparency was low (only 0.5-0.7 meters). According to the method that the snails graze bitter grass and attach algae and moss, which can effectively reduce the number of attached algae and moss, the density of the snails is 15-20kg / 10,000m 2 , the specification is body length 1-2cm. After 40 days of dosing, the area of ​​moss no longer increased, the surface attachments of Erythrina galerica decreased significantly, the transparency of the water body reached 1.2-1.5 meters, and the transparency of the water body increased by ...

Embodiment 3

[0054] Embodiment 3 is applied to the control of surface attachments and moss on the surface of bitter grass in Shizigang River, Hangzhou, Zhejiang

[0055] The Shizigang River in Hangzhou, Zhejiang, has a water depth of about 1-1.5m, a total length of about 4.535km, and a water area of ​​101,124m 2 . Before the snails were put in to build a stable ecosystem, there were many surface attachments and mosses on the surface of the water body of Shizigang. The river landscape effect was not good, and the transparency of the water body was low (only 0.5 meters). According to the method that the snails graze bitter grass and adhere to algae and moss, which can effectively reduce the number of attached algae and moss, the density of feeding snails is 20-25kg / 10,000m 2 , the specification is body length 1-2cm. After 40 days of dosing, the area of ​​moss no longer increases, the surface attachments of Erytheria fraternis decreased significantly, the water transparency reached 1.0-1.2 ...

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Abstract

The invention belongs to the field of water body ecological restoration, and particularly relates to a method for controlling eel grass surface attachments and moss. The method includes the followingstep of throwing bellamya in a water body where eel grass grows. The method does not use chemical medicament and plant medicament which have a negative impact on the ecology of the water body and doesnot adopt expensive engineering measures, but the method adopts an ecological control method according to unique ecological habits of bellamya and ecological principles, which have not any adverse effects on environment and are of great significance for maintaining the stability of submerged vegetation in a eutrophication water body.

Description

technical field [0001] The invention belongs to the field of ecological restoration of water bodies, and in particular relates to a method for controlling the surface attachments and moss of bitter grass. Background technique [0002] Ring snail is a general term for mollusk gastropods. The main morphological feature is that the body is divided into three parts: head, foot, and visceral sac. The visceral sac is rotated to become left-right asymmetrical during development, and is shrunk in a spiral shell, also known as monovalve or ring-shaped snail. As an important functional feeding group in the water body (the distribution of the functional feeding group is that its tolerance to environmental variables can be reflected to a certain extent, the study of the impact of water pollution on the feeding function group is conducive to accurately assessing the Ecological evaluation), which has great potential in monitoring and evaluation. [0003] The growth of bitter weed can b...

Claims

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Application Information

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IPC IPC(8): C02F3/32
CPCC02F3/327
Inventor 何文辉闫龙郭荣荣
Owner SHANGHAI TAIHE WATER ENVIRONMENTAL TECH DEV CO LTD
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