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Preparation method of high-efficiency eutrophic water body phosphorus removal recoverable biological ceramsite and method for recovering phosphorus from ceramsite and regenerating biological ceramsite

A biological ceramsite and eutrophication technology, applied in chemical instruments and methods, biological water/sewage treatment, clay products, etc., can solve problems such as poor phosphorus adsorption effect, achieve significant phosphorus removal effect, reduce or control phosphorus effect of concentration

Active Publication Date: 2018-10-02
WENZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the adsorption effect of traditional ceramsite on phosphorus is not good, and it is necessary to adjust and optimize the raw material components and firing process to improve its phosphorus removal performance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Dry the river channel dredging bottom mud until the water content is below 20%, crush it through a 100-mesh sieve; cut the stalks of Cymbidium spp. into small pieces, crush them, and pass through a 100-mesh sieve. The dredged bottom sludge and the stalks of Xanthus spp. were impregnated with zinc chloride with a mass fraction of 50% to activate them respectively. The impregnation ratio was 1:2.5, and the impregnation time was 24 hours. Then take 30 g of dredging bottom mud after impregnation and activation treatment, 2 g of chrysanthemum straw, 2 g of coal, and 6 g of cement, mix them evenly, add appropriate amount of water, send them into a ball disc to form balls, and dry until the moisture content is less than 20%. Put it in a muffle furnace, preheat at 350°C for 30 min, and then heat it at 3°C•min -1 The temperature was raised to 1060 °C, held for 30 minutes, and cooled to room temperature naturally to prepare high-efficiency phosphorus-removing bio-ceramsite. The ...

Embodiment 2

[0017] Dry the river channel dredging bottom mud until the water content is below 20%, crush it through a 100-mesh sieve; cut the stalks of Cymbidium spp. into small pieces, crush them, and pass through a 100-mesh sieve. The dredged bottom sludge and the stalks of Xanthus spp. were impregnated with zinc chloride with a mass fraction of 50% to activate them respectively, the impregnation ratio was 1:2, and the impregnation time was 24 hours. Then take 30 g of dredging bottom mud, 3 g of chrysanthemum stalks, 3 g of coal, and 5 g of cement, mixed evenly, add appropriate amount of water, and send them into ball discs to form balls, and dry until the moisture content is less than 20%. Put it in a muffle furnace, preheat at 350°C for 30 min, and then heat it at 3°C•min -1 The temperature was raised to 1060 °C, kept for 45 minutes, and naturally cooled to room temperature to obtain high-efficiency phosphorus removal bio-ceramsite. The water absorption rate of phosphorus removal bio...

Embodiment 3

[0019] Dry the river channel dredging bottom mud until the water content is below 20%, crush it through a 100-mesh sieve; cut the stalks of Cymbidium spp. into small pieces, crush them, and pass through a 100-mesh sieve. The dredged bottom sludge and the stalks of Xanthus spp. were impregnated with zinc chloride with a mass fraction of 40% to activate them respectively, the impregnation ratio was 1:2, and the impregnation time was 24 hours. Then take 30 g of dredging bottom mud, 3 g of chrysanthemum stalks, 3 g of coal, and 6 g of cement, mixed evenly, add appropriate amount of water, send them into ball discs to form balls, and dry until the moisture content is less than 20%. Put it in a muffle furnace, preheat at 350°C for 30 min, and then heat it at 3°C•min -1 The temperature was raised to 1080 °C, kept for 15 minutes, and cooled to room temperature naturally to obtain phosphorus-removing biological ceramsite. The water absorption rate of phosphorus removal biological cera...

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Abstract

The invention relates to a preparation method of a high-efficiency eutrophic water body phosphorus removal recoverable biological ceramsite and a method for recovering phosphorus from the ceramsite and regenerating the biological ceramsite. By taking dredged sediment and aquatic plant residues as raw materials and alternative clay as a raw material for ceramsite preparation, the high-efficiency eutrophic water body phosphorus removal recoverable biological ceramsite is prepared; the obtained high-efficiency eutrophic water body phosphorus removal recoverable biological ceramsite is significantin phosphorus removal effect, can be used for reducing or controlling the concentration of the phosphorus in a polluted water body and can be reused through regeneration.

Description

technical field [0001] The invention specifically relates to the technical field of environmental protection, in particular to a method for preparing recyclable bio-ceramic with high-efficiency phosphorus removal in eutrophic water bodies, and a method for recovering phosphorus in the ceramsite and regenerating the bio-ceramic. Background technique [0002] Due to rapid economic development and lagging environmental infrastructure construction, urban inland rivers have been polluted to varying degrees, seriously affecting the lives of residents, the image of the city and the ecological environment. With the relocation of industrial enterprises in urban areas, domestic sewage has become the main external source of pollution in urban inland rivers. The mixing and overlapping of rainwater pipes and sewage pipes leads to the discharge of sewage into rivers through rainwater pipes, which is the main reason for the deterioration of water quality in most urban inland rivers. Phosp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/132C04B33/13C02F3/32
CPCC02F1/288C02F3/32C04B33/1305C04B33/131C04B33/1321C04B33/1328C04B2235/77C04B2235/96Y02P40/60
Inventor 肖继波黄志达崔灵周吴祥庭
Owner WENZHOU UNIVERSITY
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