Nanjing Hydraulic Research Institute

Nanjing Hydraulic Research Inst., State Key Lab of Hydrology-water Resources & Hydraulic Engineering

Jianyun Zhang

Qiuwen Chen

Xiaojun Wang

Yuqing Lin

Feng Chen

Liuming Hu

Tiesheng Guan

Zhiyuan Wang

Wei Jiang

Cheng Chen

Lei Tang

Yong Gao

Wenqing Shi

Haoyu Zhu

Dongsheng Liu

Yuchen Chen

Honghai Ma

Yingxin Hong

Qin Huang

Xiaoqing Tian

Yuxin Zhang

Tianqi Yao

Xueke Liao

Hanlu Yan

Ruxia Qiao

Juhua Yu

Wenyong Yu

Disclosed is a method for determining an ecological flow process and a water temperature process of habitat requirements throughout a life history of fish, the method performs a two-factor crossover experiment with different water temperatures and flow velocities for fish in different life history stages, makes fitting according to experimental data to obtain curved surfaces of two-factor interaction relationship between fish in the different life history stages, water temperature, flow velocity, and obtains suitable water temperatures and flow velocities for fish in the different life history stages according to the curved surfaces of two-factor interaction relationship, and then determines ecological flow process and water temperature process of habitat requirements throughout a life history of the fish.

Method for determining ecological flow process and water temperature process of habitat requirements of full life history of fish

Disclosed are a method and system for vertically utilizing unconventional water source. The system includes a water collection unit, a water treatment unit, and a monitoring, regulation and reuse unit. The water collection unit is configured to collect rainwater and/or domestic wastewater; the water treatment unit is in communication with the water collection unit and configured to purify the rainwater and/or the domestic wastewater collected by the water collection unit; and the monitoring, regulation and reuse unit is in communication with the water treatment unit and configured to use reclaimed water obtained through treatment by the water treatment unit. The method and the system for vertically utilizing unconventional water source in the present disclosure have advantages of a simple structure, low costs, and high treatment efficiency, effectively save energy and water resources, and are suitable for decentralized treatment and recycling of urban domestic wastewater.

Method and system for vertically utilizing unconventional water source

An irrigation method for coastal regions. The method includes: selecting coastal region and collecting natural and environmental data of the coastal region; building a basic database of the coastal region based on high-precision map of the coastal region; establishing a water demand calculation model for coastal crops and a multi-source water supply model, where the multi-source water supply model includes a multi-source water of mixed salt-fresh water calculation model and a freshwater source calculation model; calculating water demand Qduring a forecast period according to the water demand calculation model for coastal crops; clarifying salt content Sof the water demand during the forecast period; calculating the water supply amount Qin the coastal region during the forecast period according to the multi-source water of mixed salt-fresh water calculation model; and comparing the Qand the Qto accordingly regulate irrigation operation.

Irrigation method for coastal regions

It discloses a method for preparing a magnesium-aluminum hydrotalcite-loaded nano zero-valent iron material for specifically removing perfluorooctanoic acid in a water environment and an optimized process for removing perfluorooctanoic acid thereby, and relates to the technical field of removing persistent organic pollutants in water using adsorption method and oxidation-reduction method and, in particular, to a composite material prepared by loading a nano zero-valent iron on magnesium-aluminum hydrotalcite using liquid phase reduction method.

Magnesium-aluminum hydrotalcite-loaded nano zero-valent iron composite material, method for preparing same and use thereof

A water-soil interface physiochemical monitoring apparatus and a reservoir area hydro-fluctuation belt monitoring system based on the same. The water-soil interface physiochemical monitoring apparatus comprises a cylindrical shell, a conical head, a sensor data acquisition circuit, a sealing plug, and a plurality of sensor modules. One end of the cylindrical shell is in sealing connection with the conical head, and the other end is sealed by the sealing plug. The sensor modules are connected to the sensor data acquisition circuit, and are all located in the sealed space of the cylindrical shell. Each sensor module comprises a circuit board, a temperature sensor, a dissolved oxygen sensor and a conductivity sensor, which are combined together by casting using resin, and the temperature sensor, the dissolved oxygen sensor and the conductivity sensor are separately connected to the circuit board.

Water-soil interface physiochemical monitoring apparatus and reservoir area hydro-fluctuation belt monitoring system based on same

An engineering system for collecting and utilizing regional rainwater includes a rainwater collection system, a water quality treatment system, and a control and allocation system. The rainwater collection system includes a rainwater collection ditch for a hardened underlying surface, a barrier and a water storage tank. The water quality treatment system includes a filter system. The control and allocation system includes a water quality monitoring device, a water level monitor, a control gate and a water pump. The filter system is connected to the underlying surface through the rainwater collection ditch, and the filter system is connected to the water storage tank. The control gate is disposed between the filter system and the water storage tank. The water quality monitoring device and the water level monitor are disposed within the water storage tank. The water pump is used to drain water from the water storage tank.

Regional rainwater allocation method

A experimental device is specifically an annular water tank formed by a first arc-shaped water tank, a first special-shaped water tank, a second arc-shaped water tank and a second special-shaped water tank which are sequentially connected head to tail, and the outer perimeter is 70 m to 110 m, wherein the inner walls of both the first special-shaped water tank and the second special-shaped water tank are flat, both of the widths between the outer walls and the inner walls are gradually increased from the two ends to the middle, and water flow pushing equipment which are capable of enabling the maximum water flow velocity in the experimental device to reach a preset value are respectively placed in the first special-shaped water tank and the second special-shaped water tank.

Experimental device and experimental method for studying quantitative relationship between spawning of parent fish and stimulation of flow velocity

An ultra-deep reservoir stratified water sample and sediment core integrated artificial intelligence sampling device, comprising a sampling device main chamber, an attitude balance sensor, a propeller, a balance base, and a sampler body, wherein the attitude balance sensor and the sampler body are disposed inside the sampling device main chamber; the propeller is disposed outside the sampling device main chamber; and the balance base is located at a bottom end of the sampling device main chamber. The sampling device of the present invention is an intelligent sampling device integrating high-definition underwater topography observation, undisturbed sediment core collection, vertical stratified accurate sampling of water bodies, and real-time in-situ monitoring of key physical and chemical parameters, and can be flexibly applied to deep and shallow water environments under complicated conditions.

Intelligent device for integrated sampling of layered water and sediment core of deep reservoir

Growing community of inventors

Nanjing, China

Jianyun Zhang