Composite medicament for fixing nitrogen and phosphorous in riverbed sludge, and preparation and application method thereof

A compound agent and sediment technology, which is applied in chemical instruments and methods, sludge treatment, water/sludge/sewage treatment, etc., can solve the problems of high cost of microbial preparations, affecting aquatic ecology, reducing water volume, etc. Effects of eutrophication degree and occurrence risk, low cost, and ease of use

Inactive Publication Date: 2012-04-04
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

In-situ coverage requires a large amount of covering (such as cleaning bottom mud, sand or gravel, etc.), reduces water volume, and affects aquatic ecology. It is not suitable for rivers, lakes, and landscape water bodi

Method used

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  • Composite medicament for fixing nitrogen and phosphorous in riverbed sludge, and preparation and application method thereof

Examples

Experimental program
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Embodiment 1

[0016] Example 1. Preparation of composite agents for fixing river and lake bottom sediment nitrogen and phosphorus and its effect on water treatment

[0017] Preparation of compound agents for fixing nitrogen and phosphorus in river and lake sediments:

[0018] The zeolite powder and polyferric sulfate are uniformly mixed according to the mass ratio of 95:5, and the particles with a particle diameter of 3-10 mm are formed by mechanical molding to obtain the composite agent.

[0019] Use the above compound agents to treat water bodies:

[0020] Due to the long-term large-scale discharge of industrial wastewater and domestic sewage, the water quality of a certain city river is poor, and it is in the inferior V category all the year round (nitrogen and phosphorus especially exceed the standard), and water blooms occur from time to time. The surface sediment is seriously polluted, black in color and smelly. Select two adjacent areas of the same area in the river course, surroun...

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PUM

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Abstract

The invention discloses a composite medicament for fixing nitrogen and phosphorous in riverbed sludge, and a preparation method and an application method thereof. The composite medicament disclosed herein comprises 90-99 wt% of powdered zeolite and 1-10 wt% of polymer ferric sulfate, and is prepared by mixing powdered zeolite and polymer ferric sulfate according to the proportion, and preparing into particles through mechanical molding. When using the composite medicament, the composite medicament is uniformly put into the water environment of rivers and lakes, and the dosage of the composite medicament is 0.5-2 kg/m<2>. The composite medicament has the advantages of low preparation cost, and good effect, can fast sink to the bottom when putting the composite medicament into water, uniformly disperses, effectively inhibits the release of endogenous nitrogen, phosphor, heavy metal, organic matters and the like, reduces the pollutant concentration of the overlying water, improves the water-bed ecological environment, and reduces eutrophication level and the occurrence of risk of water.

Description

technical field [0001] The invention belongs to the technical field of water environment pollution control, and specifically relates to a compound agent for fixing pollutants such as nitrogen and phosphorus in river and lake bottom mud, inhibiting the release of internal pollutants in water, and purifying water quality, and a preparation and use method thereof. Background technique [0002] Sediment is an important part of the water ecosystem. The self-purification of water includes dilution, precipitation, adsorption, and biodegradation. Sediment adsorption and biodegradation are the main forms of migration and transformation of water pollutants. Sediment has a positive effect on water self-purification. important role. As a large amount of industrial wastewater and domestic sewage are discharged into the water body, the water quality will deteriorate and the sediment will also be polluted. There is a dynamic balance of absorption and release between the sediment and the w...

Claims

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Application Information

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IPC IPC(8): C02F11/00
Inventor 王慧柏学凯宁大亮
Owner TSINGHUA UNIV
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