Nanjing Hydraulic Research Institute

Linkage Technology Group Co., Ltd.

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

Jiangsu Chengyang Crop Science Co., Ltd.

Xiaojun Wang

Jianyun Zhang

Feng Chen

Zhiqiang Lu

Xiaoqing Tian

Chuanhui Yu

Qin Wan

Jiabin Hu

Wei Jiang

Dong Wu

Minghua Xu

Libin Sun

Qin Huang

Shangcheng Xu

Haidong Pang

A water-salt regulation system for coastal regions, including an irrigation canal, a plurality of drainage channels, and a shaft. The irrigation canal is arranged on a surface farmland. The drainage channels are provided inside a soil. The irrigation canal and the drainage channels are inclined from inland to sea. The shaft is provided with a water port at which a sluice gate is provided. An inner peripheral wall of the water drainage channel is provided with a plurality of filter mesh frames with an accommodating cavity. A filter filling material is provided inside the accommodating cavity. The shaft is provided with a salinity sensor. The shaft has a first state with the sluice gate on the drainage channel closed and a second state with the sluice gate on the drainage channel opened. A water-salt regulation is also provided.

Water-salt regulation system and method for coastal regions

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

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 method is for preparing 1-(4-chlorophenyl)-2-cyclopropyl-1-propanone and an intermediate thereof, where in the method for preparing a compound of formula (I), &#x3b1;-alkoxy p-chlorobenzyl phosphonate (II) and cyclopropyl methyl ketone are used as raw materials, and subjected to a Homer-Wadsworth-Emmons reaction in an organic solvent in the presence of a base, so as to prepare a derivative of alkoxy propylene with the structure of formula (III); and the resulting derivative of alkoxy propylene (III) is hydrolyzed under acidic conditions to obtain 1-(4-chlorophenyl)-2-cyclopropyl-1-propanone (I).

Method for preparing 1-(4-chlorophenyl)-2-cyclopropyl-1-propanone and intermediate thereof

Construction of virtual environment, isolate the end user to interact directly with the core data sources, deploy the network listener engine in a virtual environment, using listening and interception technology, a variety of fine-grained authorization aggregates attribute information data to achieve the control of the end user to access core data sources. The present invention implements centralized control of remote maintenance authority, to Encapsulated client application packaged in a virtualized environment, control user access to core data sources, cut off end-users access to core data sources directly. Unify the interface of the maintenance path by virtual environment, standardized login path of maintenance personnel and maintenance tools.

Method for accessing control that based on virtual computing

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Nanjing, China

Xiaojun Wang