Black and odorous river sediment in-situ repairing agent and preparation and repairing method thereof

An in-situ remediation agent and river sediment technology, applied in chemical instruments and methods, water/sludge/sewage treatment, biological water/sewage treatment, etc., can solve the problem of short restoration time, risk of pollutant release, secondary Pollution risks and other problems, to achieve the effect of realizing the utilization of waste resources, realizing the restoration of river ecological functions, and improving the ecological environment of sediment

Pending Publication Date: 2021-12-31
陈雪文
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ex-situ treatment involves a large amount of engineering, and will cause large-scale migration of sediment, and there is a risk of pollutant release
After in-situ restoration, it is easy to have defects such as raising the river bed, reducing the water storage capacity of the river, and affecting the flow rate. However, the chemica

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0022] Example 1: A method of preparing a black river sub-mud primary restoration agent, including the following steps: (1) Dredging silt, discarded concrete and straw crushing and mixing, to obtain a carbon matrix; (2) step ( 1) The carbon matrix in the muffle is cooled after burning to obtain activated carbon; (3) the activated carbon in the step (2) is loaded with oxygen in the compressible tank, so that the activated carbon is sufficiently adsorbing oxygen to saturate; (4) will The activated carbon saturated in step (3) is sufficiently adsorbed; (5) Put the activated carbon after adsorbing moisture into the charged tank and flush into the hot oxygen to obtain a repair agent.

[0023] Among them, 50 parts of dredging, 40 parts of abandon concrete and 10 straws, the steps (1), the dredging sludge naturally dried after the sieve is 5 mm dry mud, the dry density is 1.2cm3, the porosity is 40%, The pH is 7. After the discardd concrete is broken, the particle size is 5 mm, and the s...

Example Embodiment

[0028] Example 2: A method of preparing a black river slot in the subtraction rehabiliter, including the following steps: (1) Dredging silt, abandoned concrete and straw crushing and mixing, resulting in a carbon matrix; (2) Putting steps 1) The carbon matrix in the muffle is cooled after burning to obtain activated carbon; (3) the activated carbon in the step (2) is loaded with oxygen in the compressible tank, so that the activated carbon is sufficiently adsorbing oxygen to saturate; (4) will The activated carbon saturated in step (3) is sufficiently adsorbed; (5) Put the activated carbon after adsorbing moisture into the charged tank and flush into the hot oxygen to obtain a repair agent.

[0029] Among them, 50 parts of dredging, 40 parts of the concrete and 10 straws, the steps (1), the dredging sludge naturally dried after the sieve is 10 mm dry mud, dry density is 1.5 g / cm3, the porosity is 60%, pH is 7.6, after abandon concrete, the particle size is 10 mm, and the straw p...

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PUM

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Abstract

The invention discloses a black and odorous river sediment in-situ repairing agent and a preparation and repairing method, the black and odorous river sediment in-situ repairing agent comprises a carbon substrate, the carbon substrate comprises 40-50 parts of dredged sludge, 40 parts of waste concrete and 10-20 parts of straw, wherein the straw is formed by mixing one or two of corn straw and wheat straw at any ratio; according to the black and odorous river sediment in-situ repairing agent and the preparation and repairing method thereof, waste resource utilization can be achieved, the cost is low, various pollutants can be adsorbed and removed, the ecological environment of sediment is improved, survival of aquatic organisms is facilitated, the river can be remedied, and therefore the ecological river is achieved.

Description

technical field [0001] The invention relates to the technical field of black and smelly river bottom mud restoration, in particular to an in-situ repair agent for black and smelly river bottom mud and a preparation and repair method. Background technique [0002] Due to the long-term input of pollutants and the accumulation of biological residues in the water body, a large amount of nitrogen, phosphorus, nutrients, heavy metals, and refractory organic matter have accumulated in the sediment of the river channel, causing serious pollution to the sediment of the river channel and the overlying water body. The black and odorous water body of the river not only brings extremely poor sensory experience to nearby residents, but also a prominent water environment problem that directly affects the production and life of the masses. Although the external source pollution control technology and actual restoration of water are very mature, the river sediment still releases endogenous p...

Claims

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Application Information

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IPC IPC(8): C02F3/00
CPCC02F3/00
Inventor 陈雪文陈长青徐进徐德荣
Owner 陈雪文
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