Tianjin University

Tianjin University of Commerce

Bcig Environmental Remediation Co., Ltd.

Beibei Yan

Guanyi Chen

Zhanjun Cheng

Ning Li

Junyu Tao

Fawei Lin

Jian Li

Bin Liu

Yunan Sun

Xiaoqiang Cui

Wenchao Ma

Lan Mu

Bo Li

Yude Gu

Yuting Wang

Jiangtao Wang

Junxia Wang

Fan Yu

Yadong Ge

Rui Liang

Chengzhan Jun

Xiaoling Hao

Xiang Guo

Yurou Mao

Yanbin Zhang

Wanqing Li

Jingya Ye

Jiantao Li

Jinglan Wang

Tianbao Gu

Chen Ma

Li'an Hou

Daohong Zhang

Zhan Hu

Yun Qi

Congcong Cao

Yongjie Hu

Jing Tian

Chengliang Yang

Chuanbin Wang

Xiangping Li

Zhenping Su

Xinpei Liu

Juping Liu

Ding Li

Sheng Zhao

The present invention relates to the technical field of solid waste resource utilization and environmental engineering, and in particular to a method for recovering phosphorus based on cyclic hydrothermal carbonization of wetland plants, comprising the following steps: (1) washing, drying, then crushing and sieving harvested wetland plants; (2) taking biomass powder for hydrothermal carbonization treatment to obtain a hydrothermal carbonization product; (3) performing solid-liquid separation for the obtained carbonization product; (4) continuing to use the obtained carbonization liquid as a liquid-phase medium and mixing with the biomass raw material for multi-stage cyclic hydrothermal carbonization; after the cyclic carbonization is ended, conducting solid-liquid separation to obtain phosphorus-rich carbonization liquid and cyclic hydrochar; and (5) adjusting the pH of the phosphorus-rich carbonization liquid to form and recover phosphorus crystal precipitates. The present invention effectively recovers phosphorus from the wetland plants, simultaneously realizes the resource utilization of the hydrothermal carbonization product of the wetland plants, reduces the impact of hydrothermal carbonization of biomass waste on environment, and effectively solves the problems of treatment and disposal of wetland plant residues.

Method for recovering phosphorus based on cyclic hydrothermal carbonization of wetland plants

The present disclosure provides a copper-magnesium co-doped carbonized wood sponge material, a preparation therefor, and an application thereof, and a method for converting plastics into fuel based on a Fenton-like system. In the present disclosure, a copper-magnesium co-doped carbonized wood sponge catalyst is prepared by high-temperature pyrolysis after a wood raw material is coated with polydopamine (PDA) and a copper element and a magnesium element are loaded on a wood sponge substrate, realizing the loading of a nanoreactor on a wood sponge layered structure, and forming a unique spatial microenvironment and synergistic effect by combining a superior three-dimensional lamellar structure of the wood sponge substrate with the structural advantages of the nanoreactor to promote an electron transfer pathway on a surface.

Copper-magnesium co-doped carbonized wood sponge material, preparation therefor, and application thereof, and method for converting plastics into fuel based on fenton-like system

The present disclosure provides a treatment method for oily sludge and a method for soil remediation. The treatment method for oily sludge includes: mixing the oily sludge with target biochar uniformly according to a first preset mass ratio, and conducting catalytic pyrolysis at a first preset temperature to achieve efficient removal of petroleum hydrocarbons, to obtain a pyrolysis residue used for soil remediation. In the present disclosure, the method realizes resource utilization and harmless utilization of the pyrolysis residue.

Treatment method for oily sludge and method for soil remediation

A method for preparing a supercritical fluid by deep-sea pressure is provided and belongs to the technical field of supercritical fluid preparation. The method includes the following steps of: placing a low-pressure fluid in a closed flexible container, sending the closed flexible container down to a location of a sea at a depth where a seawater pressure meets a requirement by using a powered or unpowered traction device, leaving the flexible container standing still until a volume of the flexible container does not change, wrapping the closed flexible container with a rigid pressure-bearing container, transferring the closed flexible container to the sea surface by the powered or unpowered traction device, and taking out the fluid in the flexible container as supercritical fluid. Then the supercritical fluid is produced. Therefore, the process of preparing supercritical (high pressure) liquid in the deep-sea is safer and more stable than the preparation way on land.

Method for preparing supercritical fluid by deep-sea pressure

A sorting-based garbage classification method and a sorting-based garbage classification device are provided. The method utilizes quantitative features of domestic garbage components and adopts bubble sort algorithm to build a sorting model to sort and classify domestic garbage. The method is more in line with technical requirements of downstream incineration, pyrolysis gasification and so on, and has the features of high fault tolerance rate and high operation efficiency, and is characterized by controllable environmental impact, flexible product form and high energy utilization efficiency in the operation process.

Sorting-based garbage classification method and device

A method for preparing biochar and hydrogen by utilizing anaerobic fermentation byproducts, the method including: (1) mixing a first straw, seeding sludge and distilled water, and then carrying out anaerobic fermentation to obtain a mixed product after fermentation; (2) performing separation on the mixed product to obtain a second straw and biogas slurry; and (3) carbonizing the second straw to obtain biochar, and collecting gas after a pressurized catalytic reaction on the biogas slurry to obtain hydrogen.

Method for preparing biochar and hydrogen by utilizing anaerobic fermentation byproducts

The disclosure discloses a method for preparing biochar fromand use of the biochar. The method includes: subjectingto lyophilization, then impregnating lyophilizedwith phosphoric acid, and drying to a constant weight; grinding a dried mixture in a mortar, and then subjecting a ground sample to activation treatment in a tube furnace at 400&#xb0; C. to 1,000&#xb0; C. under a nitrogen atmosphere; and boiling an obtained solid product with concentrated hydrochloric acid, then washing with ultrapure water, and drying to a constant weight to obtainbiochar. The biochar is used in adsorption of cadmium. The method for removing cadmium usingbiochar provided by the disclosure exhibits an extremely high adsorption and removal capacity for cadmium, with an adsorption capacity of biochar up to 250 mg/g or more.

Method for preparing biochar from phosphoric acid-modified, and use of biochar in removal of cadmium

Disclosed herein are integrated preparation and detection devices for studying biomass-burning aerosols, where the devices include a micro-fluidized bed reactor (MFBR), a transmission line, and an on-line detection unit that are connected in sequence. The MFBR may include a pyrolysis reactor and a pyrolysis furnace; the pyrolysis reactor may include a thermocouple, an introduction tube, and quartz sands; the on-line detection unit may be an on-line photoionization mass spectrometer; and the photoionization mass spectrometer may include a laser desorption system, a laser ionizer and a light energy ionizer. Devices of the present disclosure are beneficial to retain the original state of aerosol particles, and the fixed MFBR can realize rapid pyrolysis of a biomass due to its high and stable heat conduction efficiency, which is beneficial to studying the formation mechanism of aerosol particles.

Integrated preparation and detection device for biomass-burning aerosol and method thereby

Disclosed is a method for calculating combustion in the bed of a waste incinerator. The method is based on a model of combustion in a waste incinerator bed and comprises a water evaporation model, a volatile matter analysis model, a volatile matter combustion model, and a fixed carbon combustion model. The volatile matter of the volatile matter combustion model comprises CO, H, CH, NH, and HS. The volatile matter combustion model comprises a combustion reaction equation for said volatile matter and O, and respective equations for CO and CHreacting with water vapor. Equations governing the model of combustion in the bed of a waste incinerator comprise a continuity equation, an energy equation, a momentum equation, and a component equation. Boundary conditions of said governing equations comprise: equations of heat transfer and mass transfer from an upper boundary layer of the bed to the exterior; and equations of heat transfer and mass transfer from lower boundary layer of the bed to the exterior.

Method and device for calculating combustion in waste incinerator bed

A microalgae culturing method by using a paper-based culture apparatus, includes: 1) designing the shape of a culture apparatus as a rectangle with circles distributed in its middle; 2) spraying and printing wax on a piece of filter paper; 3) heating such that the wax penetrates through the filter paper to obtain a paper culture apparatus, where a surface of the filter paper on which the wax is sprayed and printed is called a surface A while the other surface thereof is called a surface B; and 4) dropping a first agar aqueous solution onto the circles on the surface B of the paper culture apparatus obtained in the step 3), and dropping a second agar aqueous solution added with microalgae onto the surface A of the paper culture apparatus obtained in the step 3).

Microalgae culturing method by using paper based culture apparatus

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Tianjin, China

Beibei Yan