Landscape water body bottom mud repairing agent as well as preparation and use methods thereof

A remediation agent and sediment technology, applied in chemical instruments and methods, water/sludge/sewage treatment, sludge treatment, etc., can solve the problems of slow effect, long remediation period, and difficulty in improving the biological community of sediment. , to achieve the effect of promoting degradation, simple manufacturing process and improving the sediment environment

Active Publication Date: 2016-06-29
同华禹水(上海)科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult to improve the biological community of the sediment only by relying on a single chemical remediation technology; only relying on a single biological remediation, the remediation cycle will be too long and the effect will be slow

Method used

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  • Landscape water body bottom mud repairing agent as well as preparation and use methods thereof
  • Landscape water body bottom mud repairing agent as well as preparation and use methods thereof
  • Landscape water body bottom mud repairing agent as well as preparation and use methods thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Prepare two cylindrical reactors with a diameter (inner diameter) of 60 mm, a height of 120 cm, and a bottom sludge thickness of 20 cm. One of them is the experimental group and the other is the blank control.

[0028] Use a column-type mud extractor to collect the sediment at 0-30cm below the mud-water interface of the landscape water body, and place the collected sediment into the experimental column. The height of the mud layer is 20cm, and the water depth in the column is 150cm. There are three water intake switches at 30cm, 60cm and 90cm from the bottom. According to the restoration agent dosage 2L / m 2 meter, the surface area is 0.0028m 2 , 5.7ml of repairing agent is required.

[0029] Concentration of preparation is 50g / L solution volume and is the restoration agent of 100ml:

[0030] Take 2g of inorganic metal salt (composed of calcium chloride, calcium peroxide, calcium nitrate, iron sulfate, potassium dihydrogen phosphate, and sodium chloride with a mass r...

Embodiment 2

[0035] Prepare two cylindrical reactors with a diameter (inner diameter) of 200 mm, a height of 200 cm, and a thickness of bottom sludge of 20 cm. One of them is the experimental group and the other is the blank control.

[0036] Use a column-type mud extractor to collect the sediment at 0-30cm below the mud-water interface of the landscape water body, and place the sediment in the experimental column. The height of the mud layer is 20cm, and the water depth in the column is 150cm. There are water intake switches at 30cm, 60cm and 90cm above the mud-water interface. According to the restoration agent dosage 2L / m 2 meter, the surface area is 0.0314m 2 , 62.8ml of repair agent is required.

[0037] Prepare a restoration agent with a concentration of 50g / L and a solution volume of 100ml:

[0038] Take 1.5g of inorganic metal salt (calcium chloride, calcium peroxide, calcium nitrate, ferric sulfate, calcium hydroxide, sodium chloride, dihydrogen phosphate with a mass ratio of ...

Embodiment 3

[0043] Prepare two cuboid reactors, length x width x height = 20cm x 20cm x 150cm, and the thickness of the bottom sludge is 20cm. One of them is the experimental group and the other is the blank control.

[0044] Use a column-type mud extractor to collect the bottom mud at 0-30cm below the mud-water interface of the landscape water body, and place the collected bottom mud into the experimental column. The height of the mud layer is 20cm, and the water depth in the column is 120cm. There are water intake switches at 20cm, 50cm and 80cm above the mud-water interface. According to the restoration agent dosage 5L / m 2 Calculated, the surface area is 0.04m2, and 200ml of restoration agent is required.

[0045] Preparation concentration is 50g / L solution volume and is the repairing agent of 250ml:

[0046] Preparation of bottom mud restoration agent: take 6.5g inorganic metal salt (calcium chloride, calcium peroxide, calcium nitrate, iron sulfate, sodium chloride, diphosphate dip...

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Abstract

A landscape water body bottom mud repairing agent is prepared from components in parts by weight as follows: 10-50 parts of inorganic metal salt, 5-20 parts of activated carbon, 10-80 parts of shell powder and 10-80 parts of diatomaceous earth. A preparation method of the landscape water body bottom mud repairing agent comprises steps as follows: 10-80 parts of shell powder and 10-80 parts of diatomaceous earth are ground and sieved by a 200-mesh sieve, 10-50 parts of inorganic metal salt and 5-20 parts of activated carbon are added, and the mixture is stirred and mixed uniformly. A use method of the landscape water body bottom mud repairing agent comprises steps as follows: a repairing agent turbidity solution with the concentration being 50g/L-100g/L is prepared from the repairing agent and is injected into bottom mud through a bottom mud injector, the use dosage of the repairing agent is controlled according to the water quality condition and the treatment requirements, and 2-10 L of the repairing agent turbidity solution is applied to 1 cubic meter of landscape water. The bottom mud repairing agent is low in preparation cost and remarkable in repairing effect, can effectively improve the bottom mud environments in rivers and lakes and inhibit eutrophication of a water body and is suitable for popularization and application in small and medium-sized landscape water bodies.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and relates to a restoration agent for bottom mud of a landscape water body, a preparation method and an application thereof. Background technique [0002] With the rapid development of my country's economy, water pollution has intensified, rivers, lakes and other landscape waters have become increasingly black and smelly, and the trend of eutrophication is developing rapidly. Sediment, as an important part of water bodies such as rivers and lakes, is the sink and source of various nutrients and pollutants in the water body, and is the carrier, destination and accumulation reservoir for the migration and transformation of many pollutants in the environment. The restoration methods of landscape water sediment can be divided into two categories: ex-situ restoration technology and in-situ restoration technology. Although the off-site treatment technology (such as sediment dredging)...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/00C02F11/02
CPCC02F11/00C02F11/02
Inventor 柴晓利杨宁许中硕武博然邓雨晨周萌
Owner 同华禹水(上海)科技有限公司
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