Chinese Academy of Sciences

Beijing University of Civil Engineering and Architecture

Chinese Research Academy of Environmental Sciences

Lieyu Zhang

Guowen Li

Caole Li

Wei Li

Chen Zhao

Beidou Xi

Ying Xiong

Xiaoguang Li

Donghai Yuan

Jiaqian Li

Jiaxi Li

Yu Yang

Min Li

Yonghai Jiang

Mingxiao Li

Jixi Gao

Zhifei Ma

Xunfeng Xia

Qigong Xu

Lulu Che

Fangyi Chen

Jinbiao Wang

Qiuheng Zhu

The present disclosure relates to water environment governance technology, and particularly discloses an urban river/lake water environment multi-interface governance and restoration method. The method is a multi-interface coordinated governance and restoration method based on 'control for bottom, regulation for middle and governance for top', including: 'control for bottom'&#x2014;controlling the emission of sediment nutritive salts and the dormancy and recovery of algae; &#x201c;regulation for middle&#x201d;&#x2014;regulating primary productivity in a water body to inhibit the recovery of the algae; and &#x201c;governance for top&#x201d;&#x2014;reducing nitrogen and phosphorus nutrients of an air-water interface to control the reproduction and growth of the algae. In the present disclosure, the water body governance and restoration technology based on interface coordination can effectively inhibit the outbreak of cyanobacteria and avoid extreme conditions in the ecosystem.

Methods for water environment multi-interface governance and restoration in rivers and lakes

The present application relates to the technical field of water environment governance, and particularly discloses a method for accurate positioning and in-situ treatment of pollutants at a sediment-water interface. In the method, high-throughput sequencing technology and pollutant source apportionment technology are firstly used to perform accurate positioning on the sediment to be controlled, and then electrodialysis-vacuum negative pressure dewatering technology is used to perform in-situ dewatering treatment on the sediment to be controlled, thereby realizing accurate governance with the minimum desilting amount. In the present application, in further cooperation with the application of microbial reagents, the microbial flora environment of the sediment-water interface is regulated, thereby increasing the dewatering speed of the sediment.

Method for accurate positioning and in-situ treatment of pollutants at sediment-water interface

The present application provides a device for treating a black and odorous water body comprising a pre-treatment unit, a biomimetic intestine tubular purification system which imitates a digestion of small intestine, a microbial fuel cell which imitates a digestion of large intestine, and an inclined tube sedimentation tank which imitates human excretion.

Device for treating a black and odorous water body with a bionic process

The present application provides a method for treating a black and odorous water body comprising the following steps: pre-treating the black and odorous water body; passing the pre-treated water body through a biomimetic intestine tubular purification system which imitates a digestion of small intestine; passing the tubular purification system-treated water body into a microbial fuel cell which imitates a digestion of large intestine to treat the water body; and pumping the microbial fuel cell-treated water body into an upward flow inclined tube sedimentation tank to treat the water body.

Method for treating a black and odorous water body with a bionic process

The present invention involves a persulfate-release material used in the filler of permeable reactive barrier (PRB). This material presents double-layered structure characteristic: inner- and outer-layers are consisted of persulfate, cement, sand and water with different mass ratio. Two different types of moulds are used for the regulation of the shape of the two-layer structures, which guarantees the stability and reproducibility of its structures and properties. During the whole released process, the released rate become more uniform and stable by the use of this material. During the whole service period, the change of the released rate is very slow, and the service lifetime can be 1-10 years. This invention can both reduce the initial released rate and improve the later released rate, and thus the whole released rate can be more uniform, which can be an important method to promote the efficiency of the persulfate toward engineering application.

Double-layer persulfate sustained-release material and its preparation method

Constructed wetland wastewater treatment equipment under low temperature for continuous operation which includes: three-section substrates filled in a constructed wetland, ventilation pipes being arranged in the substrates, a height of a bed of the constructed wetland being higher than a height of the substrates; a double wall being filled with an organic substance used as a barrier at periphery of the constructed wetland; a water distributing pipe disposed at a top of the three-section substrates and a water collecting pipe disposed at a bottom of the three-section substrates; and a water inlet pipe connected to an upper portion at one end of the three-section substrates and a water outlet pipe connected to a lower portion at the other end of the three-section substrates, a water outlet of the water outlet pipe being higher than the height of the bed of the constructed wetland.

Engineered wetland device of continuous operation for wastewater treatment under low temperature

Growing community of inventors

Beijing, China

Lieyu Zhang