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Method for restoring eutrophic water by utilizing rumex japonicus

A technology of eutrophication and sheep's hooves, which is applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc., to achieve the effect of improving restoration effect, stable properties, and improving water purification effect

Inactive Publication Date: 2013-10-09
ZHEJIANG INST OF HYDRAULICS & ESTUARY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, N + The case of ion injection into aquatic plants and its application in water purification under low temperature conditions has not been reported yet

Method used

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  • Method for restoring eutrophic water by utilizing rumex japonicus
  • Method for restoring eutrophic water by utilizing rumex japonicus
  • Method for restoring eutrophic water by utilizing rumex japonicus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] For Lythrumsalicaria, Cyperus alternifolius, Scirpus rangulatus, Menthahap localyx, Eclipta prostrata, Rumex japonicus, Ludwigiapeploides, Ipomoea aquatica, etc. 32 kinds of plants were tested in hydroponics, and the test water was tap water plus analytically pure KNO 3 , NH 4 Cl and KH 2 PO 4 Uniform preparation, where NH 4 -N, NO 3 -N and PO 4 The average concentration of -P was 3.60 mg·L -1 , 5.79mg·L -1 and 0.38mg·L -1 , After 1 month of experimental observation, compare the differences in survival rate, growth status, biomass, water purification effect and other indicators, and screen plants with better water purification function. Among them, the biomass of sheep's hooves and the removal capacity of nitrogen and phosphorus elements are shown in Table 1.

[0026] Table 1 Biomass and removal capacity of nitrogen and phosphorus elements in the test sheep's hooves

[0027]

[0028] Among the 32 kinds of experimental plants screened, the biomass of sheep's...

Embodiment 2

[0030] A method for restoring eutrophic water bodies by using sheep's hooves, comprising:

[0031] (1) Carry out N on the sheep's foot seeds + ion implantation treatment;

[0032]In May 2011, a large number of mature and plump sheep's feet seeds were collected at the river bank of the Jiangdong Base of the Zhejiang Water Conservancy and Estuary Research Institute (30°09′N, 120°16′E); The sheep's hoof seeds with basically the same degree were divided into 4 parts on average, one of which was kept in the laboratory at room temperature, and the other 3 were entrusted to the Hefei Institute of Plasma Physics, Chinese Academy of Sciences, to treat the seeds with an ion implanter; the energy control was 25keV, and the dose was 2.6 ×10 16 N + (ions) cm -2 , 5.2×10 16 N + (ions) cm -2 and 9.1×10 16 N + (ions) cm -2 , the seeds without ion implantation treatment were used as the control (CK);

[0033] (2) put N + The seeds of the sheep's feet after the ion implantation trea...

Embodiment 3

[0044] In May 2012, a large number of mature and plump sheep's feet seeds were collected at the river bank of the Jiangdong base of Zhejiang Water Conservancy and Estuary Research Institute (30°09'N, 120°16'E)); according to the same method as in Example 2, N+ Injection treatment, and test the purification effect of the obtained sheep's hooves plants on the eutrophic water body, the test results are shown in Table 3.

[0045] Table 3 Purification effect of sheep's hooves on eutrophic water under different schemes

[0046]

[0047] Note: ①Blank sample without planting; ②Planting sheep’s hoof plants grown without ion implantation; ③Planting seeds with 2.6×10 16 N + (ions) cm -2 The sheep's hoof plant that grows out after treatment; 16 N + (ions) cm -2 The sheep's hoof plant that grows out after treatment; 16 N + (ions) cm -2 The sheep's hooves plants grown after the treatment.

[0048] It can be seen from Table 3 that the seeds were treated by N + NH 4 -N, NO 3 -N...

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Abstract

The invention discloses a method for restoring eutrophic water by utilizing rumex japonicas. The method comprises the following steps of: carrying N<+> ion injection treatment on rumex japonicas seeds; sowing the rumex japonicas seeds which are injected with the N<+> ions into the soil, transplanting the grown rumex japonicas plants to a planting floating floor; placing the planting floating floor on which the rumex japonica plants are cultivated into the eutrophic water; and purifying the water in a rumex japonicas growing process. Compared with the prior art, the method has the advantages that the plant rumex japonicas which can grow throughout the year and has a better water purifying effect is screened, and the N<+> ion injection technology is utilized to treat the rumex japonicas seeds; the water purifying effect of the obtained rumex japonicas variety on the eutrophic water under the low-temperature environment is greatly improved, and the obtained rumex japonicas variety is higher in application value.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to a method for repairing eutrophic water body by using sheep's hooves. Background technique [0002] Eutrophication refers to that under the influence of human activities, a large amount of nutrients such as nitrogen and phosphorus enter slow-flowing water bodies such as lakes and bays, causing rapid reproduction of algae and other plankton, a decrease in dissolved oxygen in the water body, and deterioration of water quality. A phenomenon in which fish and other living things die in large numbers. Under natural conditions, lakes will also transition from an oligotrophic state to a eutrophic state, but this natural process is very slow; while the eutrophication caused by the artificial discharge of industrial wastewater and domestic sewage containing nutrients can be achieved in a short period of time. appear within. [0003] The prevention and control of eutrophi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/32
Inventor 汪秀芳徐海波吴剑锋许开平薛淋淋
Owner ZHEJIANG INST OF HYDRAULICS & ESTUARY
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