Tianjin University

Tianjin University of Commerce

Bcig Environmental Remediation Co., Ltd.

Guanyi Chen

Beibei Yan

Zhanjun Cheng

Fawei Lin

Junyu Tao

Ning Li

Yunan Sun

Jian Li

Bin Liu

Wenchao Ma

Xiaoqiang Cui

Lan Mu

Bo Li

Hui Ding

Dan Zhao

Rui Liu

Xiaoling Hao

Yuting Wang

Wenzhu Wu

Chao Chen

Tianbao Gu

Jiangtao Wang

Junxia Wang

Fan Yu

Yongjie Hu

Yadong Ge

Rui Liang

Yude Gu

Shuang Wu

Xiang Guo

Yurou Mao

Yanbin Zhang

Wanqing Li

Guandong Chen

Jiantao Li

Chengzhan Jun

Jingya Ye

Chengliang Yang

Chen Ma

Li'an Hou

Daohong Zhang

Zhan Hu

Yun Qi

Congcong Cao

Jinglan Wang

Jing Tian

Jiahao Cui

Jianbo Quan

Tengfei Zhang

Tinglu Zhang

Chuanbin Wang

Xiangping Li

Zhenping Su

Xinpei Liu

Juping Liu

Ding Li

Yingjin Song

Yingxiu Zhang

Lei Zhong

Caiyu Wang

Shuyan Meng

Shu Tian

Sheng Zhao

Jingnan Tian

Yuru Sun

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 disclosure provides a multivariate solid waste proportion optimization method based on a coupling of matrix operation and machine learning, including following steps: obtaining proportioning feedstock, where the proportioning feedstock include solid waste and boiler/industrial kiln working feedstock; using a machine learning model embedded optimization algorithm to obtain a set of characteristic parameter requirements of the proportioning feedstock; according to the set of characteristic parameter requirements of the proportioning feedstock, optimizing the blending ratio of the solid wastes and the boiler/industrial kiln working feedstock to obtain an optimized blending ratio of the solid wastes and the boiler/industrial kiln working feedstock; according to the optimized blending ratio of the solid wastes and the boiler/industrial kiln working feedstock, obtaining an optimized set of solid waste characteristic parameter requirements; completing solid waste proportion based on the optimized set of solid waste characteristic parameter requirements and the set of solid waste characteristic parameters.

Multivariate solid waste proportion optimization method based on coupling of matrix operation and machine learning

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 application discloses a method for preparing crude polysaccharides based on synergistic fermentation with corn stover and fungus, including the following steps: step (1): drying corn stover, pulverizing, placing in a hydrothermal reactor, adding deionized water, sealing the hydrothermal reactor, placing in a heating device, reacting, taking out reaction products, centrifuging and drying a solid; step (2): adding the products obtained in step (1) and dried bean curd residue to a container, adding distilled water, mixing uniformly, sterilizing to obtain a mixed material, inoculating a fungus inoculum under aseptic conditions, sealing the container and cultivating in the dark to obtain crude polysaccharides. The disclosure uses corn stover and bean curd residue as raw materials to achieve efficient utilization of discarded biomass, reduce environmental pollution, and improve utilization of corn stover.

Method for preparing crude polysaccharide based on fermentation of corn stover and dried bean curd residue by

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

The present application discloses a liquid seal method for on-off of gas pipeline and a device thereof, wherein a liquid-sealed U-shaped container being provided in the gas pipeline that requires to perform on-off control; a lifting mechanism using a leading screw controls the slider having a certain volume to immerse in or leave the liquid so as to raise or lower the liquid level. The U-shaped container has a structure with a wide top and a narrow bottom, the space of the U-shaped container is divided into two spaces with different sizes by a separating plate, and a liftable liquid-occupying device is located at the space having a larger volume; the upper and lower parts of the slider are tapered; and the driving device can be motor or hand wheel.

Liquid seal method for on-off of gas pipeline and device thereof

A method for enhancing degradation of ester volatile organic compounds with a cerium oxide supported palladium single atom catalyst under low-temperature microwave comprises the steps of firstly preparing a single atom catalyst Pd/CeO, adding the catalyst Pd/CeOinto a reaction cavity, initiating microwave radiation to enhance the catalysis reaction, and quickly introducing an ester compound with a concentration of 50&#x2dc;5000 mg/mand a space velocity of 2000&#x2dc;100000 hinto the reaction cavity from a vapor phase sampling port to react when the reaction temperature is 10&#x2dc;80&#xb0; C. A catalyst packed column is provided in the reaction cavity, the vapor phase sampling port is defined at the bottom of the reaction cavity, and an exhaust port is defined at the top of the cavity. The microwave method can enhance and activate active sites, prevent the aging of active sites, and enable the chemical reaction rate to be increased by more than 17.9%.

Method for enhancing degradation of ester VOCs with cerium oxide supported palladium single atom catalyst under low-temperature microwave

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

Guanyi Chen