	US 12,441,633 B1
	Targeted in-situ ecological remediation apparatus
Cuimei Li, Suzhou (CN); Shaoguang Zhang, Kunshan (CN); and Hao Wang, Kunshan (CN)
Assigned to Suzhou University of Science and Technology, Suzhou (CN); and China Water Resources and Environment Research Institute (Suzhou) Co., Ltd, Kunshan (CN)
Filed by Suzhou University of Science and Technology, Suzhou (CN); and China Water Resources and Environment Research Institute (Suzhou) Co., Ltd, Kunshan (CN)
Filed on Apr. 11, 2025, as Appl. No. 19/176,166.
Claims priority of application No. 202411207891.8 (CN), filed on Aug. 30, 2024.
Int. Cl. C02F 1/28 (2023.01); C02F 3/30 (2023.01); C02F 3/32 (2023.01); C02F 101/10 (2006.01); C02F 101/16 (2006.01); C02F 103/00 (2006.01)

CPC C02F 1/281 (2013.01) [C02F 3/303 (2013.01); C02F 3/32 (2013.01); C02F 2101/105 (2013.01); C02F 2101/16 (2013.01); C02F 2103/007 (2013.01)]

6 Claims

1. A targeted in-situ ecological remediation apparatus, comprising an ecological adsorption device, a frame, a float plate, and a planting assembly;

wherein the ecological adsorption device is configured to be arranged in a to-be-treated river and comprises multiple ecological adsorption ball assemblies, and the multiple ecological adsorption ball assemblies are prepared from a modified silicoaluminate inorganic mesoporous material and are configured to adsorb pollutants within the to-be-treated river;

wherein the modified silicoaluminate inorganic mesoporous material is prepared through the following steps:

S1, crushing silicoaluminate and screening out silicoaluminate particles of 80 mesh to 100 mesh;

S2, soaking the silicoaluminate particles obtained in the S1 in nitrate solution with a concentration of 1 mol/L to 6 mol/L for 12 hours to 24 hours to make every 1 gram (g) of the silicoaluminate particles correspond to 10 mL to 60 mL of the nitrate solution, then filtering, drying at a temperature of 95° C. to 110° C. after the filtering, followed by calcining at a temperature of 400° C. to 500° C. for 1 hour to 2 hours to thereby obtain primary modified silicoaluminate particles; and

S3, soaking the primary modified silicoaluminate particles obtained in the S2 in chitosan solution with a mass concentration of 3% to 5% and a temperature of 40° C. to 60° C. for 0.5 hours to 3 hours, then filtering and washing with water, followed by drying at a temperature of 95° C. to 110° C. to thereby obtain the modified silicoaluminate inorganic mesoporous material;

wherein the frame defines an accommodation cavity; the frame comprises a support assembly, a side plate assembly, and a bottom plate; the accommodation cavity is configured to accommodate the ecological adsorption device; and the bottom plate is a 100-mesh stainless steel screen;

wherein the float plate is disposed on the ecological adsorption device and is arranged in accommodation cavity, and multiple planting holes is arranged on the float plate;

wherein the planting assembly comprises custom pots and aquatic plants placed within the custom pots, the custom pots are disposed in the multiple planting holes, and a bottom of each of the custom pots is provided with a drainage hole;

wherein a specific surface area of the modified silicoaluminate inorganic mesoporous material is in a range of 30 40 m²/g to 40 m²/g;

wherein each of the multiple ecological adsorption ball assemblies comprises a descending ball and multiple floating balls, and the descending ball and the multiple floating balls are sequentially and vertically connected in that order from a bottom of the accommodation cavity to a top of the accommodation cavity;

wherein each of the multiple floating balls comprises a spherical shell; the spherical shell of each of the multiple floating balls comprises an outer shell and an inner shell adjacent to the outer shell; the outer shell of the spherical shell of each of the multiple floating balls is in a grid pattern with a mesh size of 1 cm×2 cm; the inner shell of the spherical shell of each of the multiple floating balls is made of a nylon bag with a mesh size of 80 mesh; the spherical shell of each of the multiple floating balls defines a hollow spherical cavity; a layer of the modified silicoaluminate inorganic mesoporous material and a pearl cotton layer are sequentially filled in the hollow spherical cavity of the spherical shell of each of the multiple floating balls from a bottom of the hollow spherical cavity of the spherical shell of each of the multiple floating balls to a top of the hollow spherical cavity of the spherical shell of each of the multiple floating balls; multiple slow-release nitrifying bacteria solid balls are filled in the pearl cotton layer; and the layer of the modified silicoaluminate inorganic mesoporous material in the hollow spherical cavity of the spherical shell of each of the multiple floating balls consists of a layer of modified silicoaluminate mesoporous material with a particle size of 2 cm to 4 cm, a layer of modified silicoaluminate mesoporous material with a particle size of 1 cm to 2 cm, and a layer of modified silicoaluminate mesoporous material with a particle size of 1 mm to 4 mm from the bottom of the hollow spherical cavity of the spherical shell of each of the multiple floating balls to the top of the hollow spherical cavity of the spherical shell of each of the multiple floating balls;

wherein the descending ball comprises a spherical shell; the spherical shell of the descending ball comprises an outer shell and an inner shell adjacent to the outer shell; the outer shell of the spherical shell of the descending ball is in a grid pattern with a mesh size of 1 cm×2 cm; the inner shell of the spherical shell of the descending ball is made of a nylon bag with a mesh size of 80 mesh; the spherical shell of the descending ball defines a hollow spherical cavity; a layer of the modified silicoaluminate inorganic mesoporous material and multiple slow-release nitrifying bacteria solid balls are sequentially filled in the hollow spherical cavity of the spherical shell of the descending ball from a bottom of the hollow spherical cavity of the spherical shell of the descending ball to a top of the hollow spherical cavity of the spherical shell of the descending ball; and the layer of the modified silicoaluminate inorganic mesoporous material in the hollow spherical cavity of the spherical shell of the descending ball consists of a layer of modified silicoaluminate mesoporous material with a particle size of 2 cm to 4 cm, a layer of modified silicoaluminate mesoporous material with a particle size of 1 cm to 2 cm, and a layer of modified silicoaluminate mesoporous material with a particle size of 1 mm to 4 mm from the bottom of the hollow spherical cavity of the spherical shell of the descending ball to the top of the hollow spherical cavity of the spherical shell of the descending ball; and

wherein the layer of modified silicoaluminate mesoporous material with the particle size of 2 cm to 4 cm, the layer of modified silicoaluminate mesoporous material with the particle size of 1 cm to 2 cm, and the layer of modified silicoaluminate mesoporous material with the particle size of 1 mm to 4 mm in each of the descending ball and the multiple floating balls are all made from the modified silicoaluminate mesoporous material with the specific surface area of 30 m²/g to 40 m²/g.