公开(公告)号：US12264092B2

公开(公告)日：2025-04-01

申请号：US17791444

申请日：2021-05-11

Applicant: SHANDONG UNIVERSITY

Inventor： Zhen Hu ,  Xinhan Chen ,  Jian Zhang ,  Huijun Xie ,  Shuang Liang

IPC: C02F3/32 ,  C02F3/34 ,  C02F101/30 ,  C02F103/26

Abstract: A constructed wetland system enhanced by immobilized laccase, it includes wetland plants, a matrix layer and a water distribution system, the wetland plants growing on the matrix layers, the matrix layer including a laccase catalyst and gravel, the laccase catalyst and gravel are distributed at intervals in a modular manner in a ratio of 1:5, the water distribution system is arranged on both sides of the matrix layer. The laccase catalyst is prepared by using a co-immobilization technology. The system improves the removal effect of hard-to-degrade organic matter in wastewater, and solves the problems of toxicity and stress of the hard-to-degrade organic matter existing in the prior art and the problems of matrix adsorption saturation.

公开(公告)号：US12220680B2

公开(公告)日：2025-02-11

申请号：US17283591

申请日：2020-04-03

Applicant: SHANDONG UNIVERSITY

Inventor： Shucai Li ,  Jian Zhang ,  Zhaofeng Li

IPC: B01J20/00 ,  B01J20/12 ,  B01J20/18 ,  B01J20/26 ,  B01J20/30 ,  C02F1/28

Abstract: A red mud-based sewage treatment agent and a preparation method thereof, a red mud-based ceramsite concrete and a preparation method thereof, and applications, the agent including the following components: 80-90% of a solid waste complex after acidification treatment, 2-15% of an alkali activator, 0-1.0% of a water reducer, 0.5-2.0% of an ultrafine additive, and 1.0-5.0% of a treatment agent. The solid waste complex includes: at least one of red mud powder, blast furnace slag powder, fly ash, coal gangue powder and iron tailings powder. First, the red mud is modified to prepare an intermediate product, namely the red mud-based sewage treatment agent, which is used for absorption of pollutants in sewage and then used as a raw material again to prepare a final product, namely the red mud-based ceramsite concrete. Progressive comprehensive utilization of the red mud is realized, and adsorbed pollution factors can be sealed in the final product.

公开(公告)号：US12172929B2

公开(公告)日：2024-12-24

申请号：US17283333

申请日：2020-01-17

Applicant: SHANDONG UNIVERSITY

Inventor： Shucai Li ,  Zhaofeng Li ,  Jian Zhang ,  Chunjin Lin

IPC: C04B28/08 ,  B01D53/14 ,  B01D53/50 ,  B01D53/62 ,  C02F1/28 ,  C02F103/16 ,  C04B14/04 ,  C04B14/10 ,  C04B28/14 ,  C04B103/10 ,  C04B111/00

Abstract: A red mud utilization method based on co-processing of industrial exhaust gas, sewage treatment and an environment-friendly and high-performance civil functional material, belongs to the technical field of environmental science and cementitious material preparation, and relates to a preparation process of a solid waste-based cementitious material, specifically including the steps: preparing an environment-friendly and high-performance red mud-based civil functional material by using slag obtained after sewage treatment with red mud and other solid wastes in physical and chemical activation and high-temperature calcination methods. The compressive strength of a solid waste-based cementitious material prepared by using the method can reach 29 MPa, the leaching quantity (lower than 3.0 ppm) of toxic elements such as heavy metals is far lower than the national standard requirement, and a solid waste-based cementitious material with great performance can be prepared.

公开(公告)号：US10684241B2

公开(公告)日：2020-06-16

申请号：US16061022

申请日：2017-11-07

Applicant: SHANDONG UNIVERSITY

Inventor： Jian Zhang ,  Huaqing Liu ,  Zhen Hu ,  Chenglu Zhang ,  Jinlin Fan

IPC: G01N27/04 ,  G01V3/06 ,  C02F3/32

Abstract: A method for detecting clogging of a subsurface flow constructed wetland, including the steps of firstly emptying water in the subsurface flow constructed wetland, and then measuring the apparent resistivity of the subsurface flow constructed wetland bed after the water is emptied, wherein the water holding capacity of clogging sediments in the clogged region after emptying is strong, the apparent resistivity of this region is further measured to be lower than an unclogged region and the clogged region can thus be positioned and analyzed, the apparent resistivity of the region clogged more seriously is lower and the degree of clogging can thus be quantitatively analyzed.