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Method for decomposing and removing substrate sludge in environment water

A technology of environmental water and sediment, applied in the direction of sludge treatment, biological sludge treatment, energy wastewater treatment, etc., can solve the problems of fixation difficulties, damage to the ecosystem, cost increase, etc., and achieve the effect of improving the perspective

Inactive Publication Date: 2010-09-08
INST OF NAT COLLEGES OF TECH JAPAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the currently implemented dredging method using a suction pump to suck the bottom mud, useful organisms growing in the bottom mud, such as microorganisms, bacteria, etc., are also sucked out and discarded.
In addition, because the vegetation such as aquatic plants is also forcibly removed, the ecosystem is destroyed
[0006] On the other hand, in the method of spreading the dragon king stone in the bottom mud, the cost increases, and even if the aerobic bacteria multiply, it is difficult to immobilize them.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] The present inventors verified the purification phenomenon of bottom sludge by the following experiment using a water tank.

[0051] 7.0 liters of water collected from West Lake and 2.0 kg of bottom mud were placed in four water tanks (15×30×20 cm, 9 liters), respectively. Three kinds of carbon materials were buried in the bottom mud, and the height of the bottom mud was all the same. Strand-shaped carbon fibers (60 cm, total length 12 m, 12 g) were suspended from the top of each water tank in which the carbon material was buried. A dispersion obtained by dissolving commercially available natto in water was thrown into each water tank. Air is introduced into the tank to decompose the bottom sludge under aerobic conditions. A heater was put into the water tank, and the water temperature was kept at 25° C. for the experiment. Also, stir the sink regularly. The types and amounts of carbon materials placed at the bottom of each water tank are shown in the table. One mo...

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PUM

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Abstract

The invention aims at resolving bottom mud efficiently without destroying ecosystem, for purifying environmental water. The invention relates to a method for resolving and removing bottom mud in environmental water, which is characterized in that: configuring water purification material made from carboform or oxidized fiber or burning-proof fiber or blackening fiber, as well as embedding carbon material or oxidized fiber or burning-proof fiber or blackening fiber.

Description

technical field [0001] The present invention relates to a method for decomposing and removing bottom sludge accumulated in fresh water, salt water, sea water, etc. such as rivers, waterways, canals, ponds, lakes, bays, inlets, and oceans. Background technique [0002] At the bottom of rivers, lakes, etc., heavy oily sediment containing foul-smelling substances accumulates. Bottom sludge is generally referred to as sludge. For water purification, various methods have been developed. However, even if the water is purified, polluting substances may dissolve from the bottom mud (sludge) deposited on the bottom of rivers, swamps, or lakes, and complete water purification is impossible. Water purification cannot be performed without decomposing or removing the sediment. [0003] As a method of removing bottom sludge, a dredging method is generally known. In addition, the following methods have also been proposed: using Longwangshi as a porous active body that emits metal ions,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F11/02
CPCY02W10/10Y02W10/20Y02W10/37
Inventor 小岛昭
Owner INST OF NAT COLLEGES OF TECH JAPAN