Chinese Academy of Sciences

Northeast Agricultural University

Chinese Research Academy of Environmental Sciences China

Chinese Research Academy of Environmental Sciences

Beidou Xi

Yonghai Jiang

Yu Yang

Xinying Lian

Lei Wang

Feng Wu

Hui Liu

Xu Han

Yali Zhang

Yangyang Wang

Jinsheng Wang

Mingxiao Li

Fu Xia

Tongtong Li

Jing Su

Juan Li

Xiangjian Xu

Wenbing Tan

Xiaosong He

Yongfeng Jia

Mingxia Zheng

Yuanyuan Sun

Qian Zhang

Huan Huan

Zhifei Ma

Yang Yang

Ming Chang

Yalei Zhang

Jun Tang

Lieyu Zhang

Xinyu Zhao

Fan Feng

Yue Wang

Li Ni Zhang

Yang Wang

Lei Chen

Min Li

Chang Liu

Hong Guang Yu

Xin Fang Hao

Jixi Gao

Tiancheng Gong

Yan Hao

Chaowei Zhu

Jiaqi Hou

Minda Yu

Zimin Wei

Xu Zhang

Liming Jia

Mao Lin

Dongyang Li

Tianxue Yang

Shouliang Huo

Jingtian Zhang

Chunzi Ma

Guangchun Shan

Xuemei Fu

Da An

Fangyi Chen

Jinbiao Wang

Xunfeng Xia

Xuan Jia

Hongyu Ding

Qigong Xu

Jun Cui

Xuhui Mao

Jiaxin Cui

Xiaochuang Li

Baiyan Cai

Yuanfeng Li

Tiejun Wen

Dan Wei

Ruyue Yang

Danfeng Ji

Yiming Zheng

Hangzheng Zhao

Hongbao Liu

Chuanjun Zhao

Yue Zhao

Zhuoshi He

Qiuling Dang

Ningqing Lv

A simulation system for an in-situ column experiment in a groundwater well and a simulation method are provided. The simulation system includes: an experimental column device, a sample taking device, and a sample injection device, where solid remediation agent and/or aquifer sediment are provided within the experimental column device, and is configured to be capable of being arranged in an experimental well and located below a water level; a bottom of the experimental column device is provided with a water inlet, and a top of the experimental column device is provided with a water outlet, where the top water outlet connects to the sample taking device, and the bottom water inlet connects to the sample injection device.

Simulation system and simulation method for in-situ column experiment in groundwater well

An immobilized microbial agent for in situ restoration of contaminated sediments, composed of Hangjin clay 2 #-loaded conductive microorganisms, obtained by the following methods: 1) pretreating Hangjin clay 2 # to obtain particulate filler; 2) amplification culture of conductive microorganisms to a bacterial liquid to be inoculated, and adding the Hangjin clay 2 # pretreated in step 1 in a certain ratio, mixing under anaerobic conditions, removing the supernatant after standing, and obtaining the immobilized microbial agent; the conductive microorganisms areand. The invention also discloses a method for preparing the immobilized microbial agent and the application of in situ restoration of contaminated sediments.

Immobilized microbial agent for in situ restoration of contaminated sediments, preparation method and application thereof

A silicified modified zero-valent iron, whose surface layer is a silicon-containing oxide layer formed by silicate, which is obtained by the following method: dissolved silicate and micron iron powder are used as raw materials and mixed in proportion, and ball milling under an inert gas atmosphere to obtain the silicified modified zero-valent iron. The invention also discloses the application of silicified modified zero-valent iron in repairing polluted water bodies. The invention uses green silicate as silicon source to carry out surface silicification modification of micron zero-valent iron, which has simple operation, low cost and is convenient for large-scale production. Moreover, the prepared silicified zero-valent iron has good dispersibility, high reduction activity and strong recycling performance, and can be used for the treatment of various polluted water bodies and soil.

Silicified modified zero-valent iron and its preparation method and application

An in-situ reagents injection system comprises a compressed air storage tank, a remediation reagents storage tank, an injection adjusting valve, an injection pipe, an upper sealing device and a lower sealing device. When the reagents injection is carried out, the compressed air is injected before the remediation reagents is injected, the porosity of the aquifer medium is increased by utilizing the air pressure expansion technology to form a relatively uniform dominant channel, and the remediation reagents is injected to realize uniform and efficient conveying of the reagents. The in-situ reagents injection system and method can make the homogeneous and efficient conveying of the remediation reagents, and ensure the full utilization of the remediation reagents, with low energy consumption of injection equipment, simple process, and flexible operation. The injection is performed in sections from top to bottom according to the steps to improve the in-situ reagents injection efficiency and remediation efficiency.

In-situ reagents injection system and method

An integrated two-phase anaerobic dry fermentation reactor based on a biomimetic principle of rumen includes a reactor body; wherein the reactor body includes a dry fermentation chamber, a secondary fermentation chamber, and a liquid storage chamber. The dry fermentation chamber is arranged at an upper portion of the reactor body. The liquid storage chamber is arranged at a bottom of the reactor body. The secondary fermentation chamber is arranged between the dry fermentation chamber and the liquid storage chamber in the reactor body. The dry fermentation chamber is connected to the secondary fermentation chamber by a porous structure.

Integrated two-phase anaerobic dry fermentation reactor based on biomimetic principle of rumen

A medium material for removing phenol contamination from groundwater, a method of producing the same, and use of the same id disclosed. In at least some embodiments, the medium material is a granular material which has an average particle diameter of 0.5-1.5 cm and is formed from a bacteria-entrapping solution, a manganese sand filter material, modified bentonite, and biochar at a mass ratio of 1:0.2-0.4:0.2-0.4:0.1-0.2 by a series of processes including strain culturing, catalysis, mixing, solidification, and the like. The medium material can remove phenol from groundwater, is a safe and environment-friendly material, has a long service life, and/or achieves waste treatment with waste.

Medium material for removing phenol contamination from groundwater, method of producing the same, and use of the same

The disclosure is a method for recovering groundwater contaminated with organic phenols. The method includes the step of injecting a remediation agent into the groundwater extracted from the stratum to be rehabilitated or ex-situ extracted, followed by the step of injecting manganese-based oxidant. By adding a suitable proportion of soluble silicon to the water to be treated as a remediation agent, the efficiency of manganese-based oxidant in the treatment of phenolic pollutants is enhanced based on interface properties and stability of various manganese oxides in the regulating and recovering process. The method for recovering groundwater contaminated with organic phenols provided by the disclosure has a simple process and is convenient to operate, the adopted chemicals are inexpensive and easy to obtain, cause little corrosion to the injection equipment, and has a wide range of applications in practice. The adopted oxidant will not produce halogenated toxic by-products during the treatment process.

Method for recovering groundwater polluted by organic phenols

A visible light catalyst, its preparation method, a visible light catalyst activated persulfate system and its use. The visible light catalyst includes a carbon material, a transition metal compound and a coating material. The carbon material is conductive carbon material, and the transition metal compound is selected from one or more of transition metal oxides, transition metal sulfides, and acid or salt compounds containing a transition metal. The visible light catalyst has high visible light photocatalytic activity and performance of degrading organic pollutants and activating persulfate which can result in synergistically degrading degradation-resistant organic pollutants.

Visible light catalyst, preparation and application thereof

Disclosed a device for preventing and controlling pollutants in the reuse of reclaimed water in agricultural activity areas with extreme water shortage, including A/O tank (), nano-aeration tank () and quick soil infiltration device () connected in sequence. A/O tank () is fed with wastewater to be treated, which is treated sequentially in anaerobic, anoxic and aerobic environment, thereafter the supernatant is transported into nano-aeration tank (). The supernatant treated by nano-aeration tank () is transported into quick soil infiltration device (), and is allowed to flow through one or more layers of fillers laid in quick soil infiltration device () to degrade or remove pollutants.

Method and device for preventing and controlling pollutants in the reuse of reclaimed water in agricultural activity areas with extreme water shortage

It discloses to a device and a method for controlling pollutants in metal mine water resources cycling utilization. The device includes a multi-stage inflow constructed wetland (), in which one or more layers of the filler are laid, and water distribution pipes () are buried at different height levels in the filler layers for multi-stage inflow, so that the received basin water is allowed to flow through each layer of the filler to degrade or remove the pollutants. In the multi-stage inflow constructed wetland, the types of fillers, dosage ratio, particle size and filling height of fillers in each layer are specifically selected. Therefore, heavy metal adsorption, suspended matter filtration, organic matter degradation, dephosphorization and denitrification can be effectively realized in the multi-stage inflow constructed wetland.

Method and device for controlling pollutants in metal mine water resources cycling utilization

The present invention relates to a method and a device for controlling pollutants in basin water resources cycling utilization in agricultural activity areas. The method includes: providing an acidification tank, an aeration tank and a multi-media constructed wetland connected in sequence, which are 4&#x2dc;10 m far from basin revetment, feeding basin water into the constructed wetland, adsorbing or degrading heavy metals and organic pollutants by the constructed wetland, and then transporting the treated basin water to the agricultural activity areas. The present invention effectively controls the content of heavy metals that will enter the agricultural activity areas, fundamentally reduces the content of heavy metals in the crops, promotes the growth of the crops, maintains sustainable and healthy development of agriculture, and therefore guarantees human health and safety.

Method and device for controlling pollutants in basin water resources cycling utilization in agricultural activity areas

The present invention provides a vertical gas distribution device for aerobic compost and a gas distribution method. Current gas distribution pipelines are easily blocked by organic materials, resulting in poor ventilation due to non-uniform local ventilation and cleaning difficulties. The inventive device comprises a compost chamber, a compost bin, a compost heap, a percolate tank, and a plurality of gas distribution branch pipes at the bottom of the compost chamber, the pipes being vertically movable in the chamber; the percolate tank is positioned at the bottom of the chamber and under the pipes; an air inlet is provided on the side wall of the tank, and an outlet is provided on the side wall of the chamber; the compost bin is inside the compost chamber, and the compost heap is in the compost bin; each pipe is top sealed, with a plurality of vent holes on the side wall, and its bottom connected to the tank. The present invention is usable for compost ventilation.

Vertical gas distribution device for aerobic compost and gas distribution method

Provided are a rapid detection method for a condition of landfill leachate polluting groundwater and an application thereof. The rapid detection method includes: carrying out fluorescence detection on groundwater in a specific region of a landfill, and determining whether the groundwater is polluted according to a ratio of fluorescence intensities at specific excitation/emission wavelengths in a specific fluorescence region. The rapid detection method provided by the solution establishes characteristic fluorescence spectrum regions, fluorescence intensities and regular characteristics thereof of organic matters in leachate-polluted groundwater of a landfill in a fluorescence spectrum region, and can achieve the rapid detection of a condition of landfill leachate polluting groundwater by means of a portable fluorescence detector on site. The detection method provided by the solution is characterized by rapid detection, no need of chemical reagents, simple operation, high detection sensitivity and lower cost.

Rapid detection method for condition of landfill leachate polluting groundwater and application thereof

The present invention relates to a method and a device for preventing and controlling pollutants in basin water resources utilization. The method includes: providing a hydrolysis tank (), a nano-aeration tank () and a vertical subsurface flow constructed wetland () connected in sequence, salvaging duckweed and algae in the basin, then crushing, acidizing and digesting them in the hydrolysis tank (), importing the supernatant obtained in the hydrolysis tank () into the nano-aeration tank (), then mixing the water from the nano-aeration tank () with basin water and importing them into the vertical subsurface flow constructed wetland (), treating to obtain basin water meeting the irrigation requirements.

Method and device for preventing and controlling pollutants in basin water resource utilization

A field groundwater filtering sampling and moving-water flow index measuring device comprises a precipitation tank, an electrode measuring column of moving-water flow, a suction filter unit and a control unit; also provided is a measuring method by adopting the index measuring device. Sample filtering and electrode measuring work in the field groundwater sampling process can be integrally solved, sampling time point selection after well washing is scientifically and automatically achieved, and the sample filtering and collecting efficiency is remarkably improved; and meanwhile, the accuracy of testing various in-situ indexes such as pH value, oxidation reduction potential and the like in groundwater is remarkably improved in the design of moving-water flow electrode measurement. The method has good application prospect and value for carrying out groundwater monitoring and evaluation, remediation and governance, and the like.

Field groundwater filtering and sampling and moving-water flow index measuring device and method

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Beijing, China

Beidou Xi