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Ecological comprehensive treating method for water subjected to eutrophication and heavy metal pollution

A comprehensive treatment and eutrophication technology, applied in biological water/sewage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc. problems such as low efficiency of gourds, to achieve the effects of improving efficiency, controlling water pollution, and improving dry matter quality and nutrition

Inactive Publication Date: 2016-01-20
FRESHWATER FISHERIES RES INST OF SHANDONG PROVINCE
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AI Technical Summary

Problems solved by technology

[0006] The root and leaf separation cutters of the existing salvage ships are similar to those of rice harvesters and small harvesters, and their width is limited, while the floating plants float on the water surface, and sometimes they are scattered, so the efficiency of processing water hyacinth is low, and the water hyacinth produced by collecting Low benefit, affecting popularization and application and waters governance

Method used

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  • Ecological comprehensive treating method for water subjected to eutrophication and heavy metal pollution
  • Ecological comprehensive treating method for water subjected to eutrophication and heavy metal pollution
  • Ecological comprehensive treating method for water subjected to eutrophication and heavy metal pollution

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Embodiment approach 1

[0026] Embodiment 1: This method for comprehensive ecological treatment of eutrophication and heavy metal polluted water includes the following steps:

[0027] (1) Plant water hyacinth on the water surface, and monitor the ratio of water hyacinth coverage area to water body area, nitrogen, phosphorus, potassium content and heavy metal content of water body every day;

[0028] (2) When the water area covered by water hyacinth is found to be four to five times the daily processing capacity of the water hyacinth division ship, start the water hyacinth division treatment ship to salvage and segment the water hyacinth, and divide the water hyacinth into stems and leaves along the water surface and roots, and salvage and collect them separately;

[0029] (3) The collected stems and leaves are dried and dehydrated by a special drying device until the water content accounts for 70-75% of the total weight. During the drying process, they are turned once every half an hour to dehydrate ...

Embodiment approach 2

[0039] Embodiment 2: The front ends of the floating tanks on both sides of the water hyacinth division treatment ship are also provided with a driven weed wheel. Before performing the step (3), first measure the contents of nitrogen, phosphorus and potassium in the water to be treated. , and measure the heavy metal content in the water body and the collected roots at the same time. If all or any of the heavy metal contents exceed the standard, the collected roots will continue to be concentrated for deep landfill treatment. If the heavy metal content of the two does not exceed the standard, the collected The roots are processed as biological compost, and all the others are as described in Embodiment 1, omitted.

[0040] The water hyacinth dividing and processing ship of the present invention expands the collection range, can accurately divide the stems, leaves and roots of the water hyacinth, and improves the fishing efficiency. The stems and leaves of the salvaged water hyaci...

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Abstract

The invention relates to an ecological comprehensive treating method for water subjected to eutrophication and heavy metal pollution. In order to overcome the low efficiency of the prior art, the ecological comprehensive treating method for water subjected to eutrophication and heavy metal pollution is characterized in that the water hyacinth on the wide-stem water surface is cut by a high-speed wire rope type root leaf separating cutter at a feeding port, the stem leaves and roots after cutting are collected and gathered by a side wall of the trumpet type feeding port and a thick layer is formed, and the stem leaves and roots are collected by a root chain bar type conveying net and a stem leaf chain bar type conveying net, so that the efficiency is high. 2) A special airing device is adopted for airing and dewatering the floating plants, 60-70% of water is accurately removed and the dry matter mass and nutrition of the floating plants are increased. The ecological comprehensive treating method provided by the invention is suitable for performing eutrophication and heavy metal pollution treatment on the closed water areas, such as inland lakes and ponds, or the opening water areas, such as rivers and water channels, subjected to water hyacinth and alternanthera philoxeroides invasion. The ecological comprehensive treating method provided by the invention is a powerful weapon for treating water pollution and turning waste into wealth.

Description

technical field [0001] The invention relates to an ecological comprehensive treatment method for eutrophication and heavy metal polluted water bodies. Background technique [0002] With the continuous development of society and the continuous expansion of cities, lakes, rivers, ponds and other inland waters around people receive more domestic sewage, industrial and agricultural production sewage, forming eutrophic water bodies with excessive nitrogen, phosphorus and potassium. There is also the problem of excessive heavy metals in the chemical water body. [0003] The existing treatment method is to cultivate floating plants such as water peanuts, water hyacinth or water spinach in eutrophic water bodies. The floating plants grow rapidly, and their stems and leaves can absorb a large amount of surplus elements such as nitrogen, phosphorus, and potassium from the water body. It has the function of enriching heavy metals. [0004] After the floating plants grow, if they cann...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/32A01G31/00A23K10/37C02F101/20
CPCY02P60/87
Inventor 杜兴华张明磊许国晶刘飞张金路陈秀丽巩俊霞王志忠
Owner FRESHWATER FISHERIES RES INST OF SHANDONG PROVINCE
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