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Cover material for black and odorous bottom mud slow flow shallow water riverway and repairing method

A technology of black and odorous bottom sludge and covering material, which is applied in chemical instruments and methods, water/sludge/sewage treatment, sludge treatment, etc., can solve the problems such as the difficulty in popularization and application of ecological restoration projects and the difficulty in survival of submerged plants, etc. Achieve the effect of improving water transparency, speeding up recovery and healthy development, and promoting plant growth

Active Publication Date: 2015-12-02
INST OF AQUATIC LIFE ACAD SINICA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for river courses with black and odorous bottom mud, if the black and odorous bottom mud is not covered and treated, submerged plants will hardly survive, and ecological restoration projects will be difficult to popularize and apply.

Method used

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  • Cover material for black and odorous bottom mud slow flow shallow water riverway and repairing method
  • Cover material for black and odorous bottom mud slow flow shallow water riverway and repairing method
  • Cover material for black and odorous bottom mud slow flow shallow water riverway and repairing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A covering material for slow-flowing shallow water channels with black and odorous bottom mud, which is made of the following raw materials in mass fraction:

[0036]

[0037] A kind of preparation method of the covering material of slow-flowing shallow water channel of black and smelly bottom mud, its steps are:

[0038] 1) Dry the local river bottom mud after killing germs, pathogens, removing organic matter, etc., to obtain a kind of river bottom mud after killing germs;

[0039] 2) After soaking the medical stone in dilute hydrochloric acid with a mass fraction of 2 or 3 or 4 or 5% for 1 or 2 hours, wash it with water until neutral, and place it in a muffle furnace at 250°C or 270 or 290 or 310 or Roasting at 330 or 350°C for 1 or 2 hours to obtain a modified medical stone for later use;

[0040] 3) Mix the treated river bottom mud, modified medical stone and calcium peroxide according to the composition of the above-mentioned mass fractions, and prepare the bot...

Embodiment 6

[0051] A covering material for slow-flowing shallow water channels with black and odorous bottom mud, which is made of the following raw materials in mass fraction:

[0052]

[0053] A kind of preparation method of the covering material of slow-flowing shallow water channel of black and smelly bottom mud, its steps are:

[0054] 1) Dry the local river bottom mud after killing germs, pathogens, removing organic matter, etc., to obtain a kind of river bottom mud after killing germs;

[0055] 2) Soak the medical stone in dilute hydrochloric acid with a mass fraction of 2 or 3 or 4 or 5% for 1 or 2 hours, wash it with water until neutral, and place it in a muffle furnace at 250°C or 255 or 260 or 275 or Roasting at 285 or 295 or 305 or 315 or 335 or 350°C for 1 or 2 hours to obtain a modified medical stone for later use;

[0056] 3) Mix the treated river bottom mud, modified medical stone and calcium peroxide according to the composition of the above-mentioned mass fractions, ...

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Abstract

The invention discloses a cover material for a black and odorous bottom mud slow flow shallow water riverway and a repairing method. The cover material is composed of riverway bottom mud, modified medicinal stones and calcium peroxide in certain proportions. The repairing method comprises the following steps: 1) uniformly mixing the treated riverway bottom mud, modified medicinal stones and calcium peroxide in certain proportions to prepare a bottom mud ecological cover material; 2) uniformly spreading the ecological matrix material into the river bottom from the water surface of the slow flow riverway; and 3) after a period of time, planting submerged plants in a covered area by virtue of a packaging method, and carrying out scientific management and maintenance on the submerged plants. The cover material is reasonable in formula, convenient to use, low in cost, environmental-friendly and good in repairing effect. The repairing method is simple and convenient to operate and ecological and environmental-friendly and can improve the survival environment of a riverway substrate, so that the substrate is suitable for submerged plants to grow, the problems that the submerged plants in a black and odorous bottom mud river are hard to survive and grow and the like are effectively solved, recovery of the ecological environment in a water domain is facilitated, and recovery and healthy development of a river ecological system are accelerated by virtue of the submerged plants.

Description

technical field [0001] The invention belongs to the technical field of ecological restoration of rivers, and more specifically relates to a preparation method of an ecological covering material and a restoration method of slow-flowing shallow water channels with black and odorous bottom mud, which can be applied to restoration projects of slow-flowing shallow water channels with black and odorous bottom mud. Background technique [0002] The black and smelly rivers are mainly the result of the unbalanced oxygen supply and consumption of water caused by excessive pollution. Especially slow-flowing rivers, the self-purification ability is poor. The water body is under anoxic or even anaerobic conditions for a long time, and a large amount of retained pollutants are transformed and produce ammonia nitrogen. Smelly and malodorous substances such as hydrogen sulfide and volatile organic acids, and black substances such as iron and manganese sulfides. After the bottom mud is black...

Claims

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Application Information

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IPC IPC(8): C02F11/00C02F11/02
CPCY02A20/402
Inventor 吴振斌张义贺锋徐栋周巧红刘子森杨晓龙
Owner INST OF AQUATIC LIFE ACAD SINICA
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