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Watercourse ecological restoration filler and preparation method and application thereof

An ecological restoration and river channel technology, applied in chemical instruments and methods, biological water/sewage treatment, granular microbial carrier treatment, etc., can solve the problems of poor environmental adaptability, single strain, low survival rate, etc., and achieve product cost. Low, excellent performance, quick adaptation to the environment

Inactive Publication Date: 2019-03-29
上源环工生态环境科技(苏州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the problems of single bacterial species, poor environmental adaptability, low survival rate, low efficiency, and easy loss in conventional microbial remediation technology, and at the same time solve the problem of sludge disposal and waste utilization caused by river dredging, the present invention provides a River ecological restoration filler and its preparation method and application, by roasting the dried sediment mud into a porous shape, and then attaching the screened dominant indigenous microorganisms to the membrane and multiplying them in large numbers on the porous filler, and then passing through the membrane. The filler is placed in the suspended spherical filler and fixed in series at the lower end of the ecological floating bed for ecological restoration of the river

Method used

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  • Watercourse ecological restoration filler and preparation method and application thereof
  • Watercourse ecological restoration filler and preparation method and application thereof
  • Watercourse ecological restoration filler and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Add lanthanide rare earth element compound to the collected mud, the addition amount is 0.1wt%, adopt belt type filter press to press filter the mud to 45% after mixing, then grind and dry naturally in the air to a moisture content of 18%. sludge, and then mix it according to the volume ratio of 1:3 to obtain sludge with a moisture content of about 25%. Next, the sludge was pulverized with a roller mill, and then mixed to form a viscous state. Stir with a high-speed mixer with a rotation speed of 400r / min, and at the same time, the air pump feeds air at a rate of 0.2m / s, so that the air and the above-mentioned viscous sludge are almost evenly mixed. After the above steps are completed, use a granulator to granulate, and the particle size is 1-3mm.

[0047] The pellets are solidified in a rotary kiln in two batches. The first curing temperature is 400 degrees Celsius for 2 hours, and the second curing temperature is 1200 degrees Celsius for 3 hours. After the above gr...

Embodiment 2

[0052]Add a lanthanide rare earth element compound to the collected mud in an amount of 0.01wt%, and after mixing, use a belt filter press to filter the mud to 40%, and then grind it in the air and dry it naturally to a moisture content of 10%. sludge, and then mixed according to the volume ratio of 1:2 to obtain sludge with a water content of 20%. Next, the sludge was pulverized with a roller mill, and then mixed to form a viscous state. Stir with a high-speed mixer with a rotation speed of 500r / min, and at the same time, the air pump feeds air at a rate of 0.05m / s, so that the air and the above-mentioned viscous sludge are almost evenly mixed. After the above steps are completed, use a granulator to granulate, and the particle size is 1-3mm.

[0053] The pellets are solidified in a rotary kiln in two batches. The first curing temperature is 900 degrees Celsius for 0.5 hours, and the second curing temperature is 1500 degrees Celsius for 2 hours. After the above granules ar...

Embodiment 3

[0058] Add the lanthanide rare earth element compound to the collected mud, the addition amount is 0.05wt%, and after mixing, use a belt filter press to filter the mud to 50%, and then grind it in the air and dry it naturally to a moisture content of 15%. sludge, and then mixed according to the volume ratio of 1:4 to obtain sludge with a moisture content of 22%. Next, the sludge was pulverized with a roller mill, and then mixed to form a viscous state. Stir with a high-speed mixer with a rotating speed of 480r / min, and at the same time, the air pump feeds air at a rate of 0.1m / s, so that the air and the above-mentioned viscous sludge are almost evenly mixed. After the above steps are completed, use a granulator to granulate, and the particle size is 1-3mm.

[0059] The pellets are solidified in a rotary kiln in two batches. The first curing temperature is 600 degrees Celsius for 1 hour, and the second curing temperature is 1000 degrees Celsius for 4 hours. After the above p...

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Abstract

The invention discloses a watercourse ecological restoration filler and a preparation method and application thereof, and belongs to the technical field of environmental protection. By roasting driedsediment sludge into a porous shape, attaching screened dominant indigenous microorganisms and mulching a film for mass propagation on the porous filler, placing the film-mulched filler into a suspended spherical filler, connecting into a string and fixing at the lower end of an ecological floating bed, the watercourse ecological restoration is completed. The problem of disposal of sludge generated by river dredging is solved, foul smell is removed directly by roasting, and wastes are utilized. Since plant fiber contained in the sludge particles is carbonized and the carbon surface is exposedon the porous inner wall, pollutants can be directly removed by adsorption, and the adsorption performance is greatly improved. Since the original material of the filler is the best environment familiar to the microorganisms, the microorganisms can rapidly adapt to the environment by fixing the dominant indigenous microorganisms on the porous particle filler, the function of pollutant degradationis performed, and the purification effect is further improved.

Description

technical field [0001] The invention relates to a river channel ecological restoration filler, a preparation method and application thereof, and belongs to the technical field of environmental protection. Background technique [0002] With the rapid development of technology and economy, a large amount of pollutants produced are directly discharged into rivers, resulting in the continuous increase of pollutants such as nitrogen and phosphorus in the water body, and the water body is severely eutrophic and even black and smelly. In response to this situation, there are a series of treatment methods, chemical, physical and biological restoration methods. Due to the large investment, high maintenance cost and long-term treatment effect of chemical and physical methods, the use of bioremediation technology is basically advocated to treat rivers, with low operating costs, strong applicability, strong degradation of pollutants and no secondary pollution. Conventional biological t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34
CPCC02F3/34C02F2003/001C02F2103/007Y02A20/402
Inventor 曾子涵季艳艳谢菁程飞唐庆伟沈雯婷
Owner 上源环工生态环境科技(苏州)有限公司