A system comprising an agitation and flocculation system and a particulate filter capture system, and optionally a feedback system and/or an ion exchange resin system. The agitation and flocculation system configured to receive a contaminated aqueous stream and an anhydrite quantity, and comprising means for agitating the aqueous stream and a means for mixing the aqueous stream with the anhydrite, such that a precipitate of calcium+contaminant complexes is formed. Also, a system comprising a fixed-bed type cross-flow system and a particulate filter capture system, and a corresponding method of removing per- and polyfluorinated alkyl substances from the contaminated aqueous stream. The method comprising the acts of: providing an anhydrite quantity; contacting and agitating the anhydrite quantity with a contaminated aqueous stream; and collecting the precipitate of calcium+contaminant complexes formed from the aqueous stream.

A water leakage monitoring system for a water and sewage pipe is provided. The water leakage monitoring system includes a plurality of sound detection devices installed in the water and sewage pipe to be spaced apart from each other, configured to operate for a predetermined operation time to detect a sound of water flowing inside the water and sewage pipe, and to record the sound of water for the predetermined recording time when a water leakage sound is detected during a detection operation, and a water leakage monitoring server configured to receive water leakage information including the recorded sound of water from a pair of neighboring sound detection devices detecting a water leakage sound among the plurality of sound detection devices and to generate detailed water leakage information by using the received water leakage information.

An apparatus, system and method to purify water is disclosed. Pumps and energy recovery devices for taking water from an intake, filtering the water to remove solid contaminates before running the filtered water through the reverse osmosis system to the discharge device and purified water lines are described. The system may comprise a control panel that controls the plurality of filters, plurality of reverse osmosis membranes, purified water line and effluent discharge device, to achieve favorable water purification. A method that utilizes the apparatus and/or system is described herein.

Disclosed are a method and a device for a rational allocation of regional multi-source water resources driven by bilateral classified water prices, belonging to the field of water resources management. The method establishes a supply-side and demand-side classified water price model based on a regional comprehensive water price by using a full-cost water price theory, solves the classified water price model and an established regional multi-source water resource allocation model driven by expected classified water prices of the supply-side and the demand-side by adopting a cooperative game method to obtain regional multi-source water resource allocation results, and the regional multi-source water resource allocation results include a water resource allocation strategy corresponding to the expected classified water prices of the supply-side and the demand-side.

A water treatment system comprises a flow path through a first activated carbon filter, a second activated carbon filter downstream of the first activated carbon filter, a particulate filter downstream of the second activated carbon filter, for example a ceramic membrane, and a UV sterilizer downstream of the particulate filter. Ozone is introduced into the process water ahead of a water storage vessel for storing treated water produced by the system. A recycle subsystem is periodically operated to withdraw treated water from the water storage vessel to form recycled water, introduce the recycled water to the water lines upstream of the UV sterilizer, and return the recycled water to the water storage vessel. A main programmable logic controller (PLC) controls a flow of the process water through the water treatment system and controls the recycle subsystem.

The present disclosure provides a method and system for managing public water in a smart city. The method may be performed by an urban public water management platform. The method may include: obtaining initial rainwater data in at least one area, the initial rainwater data may include rainfall data and rainwater collection data of at least one rainwater collection system, each of the at least one rainwater collection systems corresponding to at least one rainwater collection mode; determining the amount of purified rainwater during a first period corresponding to the at least one rainwater collection mode according to the initial rainwater data in the at least one area; and determining a rainwater storage plan during a second period based on the amount of purified rainwater during the first period corresponding to the at least one rainwater collection mode.

The invention provides an apparatus for providing potable water, which apparatus comprises a plurality of components linked in series to provide a flow path through the apparatus, wherein the plurality of components comprises: (i) an inlet (4) for a stream of contaminated water requiring purification; (ii) a centrifugal separator (20) for separating the contaminated water stream into a partially purified water stream and a contaminant stream; (iii) a pre-filter pump (26); (iv) a pre-filter pressure sensor (30); (v) a first filter assembly (32) comprising one or more filter modules for removing particles of a predetermined size and/or removing organic contaminants from the partially purified water stream; (vi) a post-filter pressure sensor (38); (vii) a post-filter pump (40); (viii) a second filter assembly comprising one or more reverse osmosis filters (48); (ix) a UV steriliser unit (52); and (x) an outlet (6) for purified potable water; and wherein the apparatus further comprises an electronic controller (14) for controlling and monitoring the operation of the apparatus.

A multi-effect energy-saving apparatus for pollution control and utilization of petrochemical water, has a multi-effect treatment device, a post-treatment device, a first loading head, a second loading head, and a third loading head, by combined assembly of devices, the apparatus is simple to disassemble and easy to clean, meanwhile due to the controllable addition of treating agent by using a multi-effect regulator, a fluid outlet connecting member and other components, it is energy-saving and multi-effective, and has excellent treatment effect.

The present invention relates to the field of water condensing apparatus, and particularly to an apparatus for producing drinkable water from air, comprising: a condensing device for condensing moisture out of air, a purification device, and a horizontally disposed tri-layer platform; the condensing device comprises an adsorption rotor, a heat exchange mechanism, and an air circulation duct group; the purification device comprises a water storage component and a purification component, and the purification component comprises a filter member and an ultraviolet sterilization member in communication with the heat exchange mechanism. As such, the moisture in the air is first condensed out; and then sterilization and filtration are performed, so as to avoid redundant work of the apparatus and improve the operating efficiency. The air entering from the air inlet of the heat exchanger firstly undergoes the heat exchange to condense water in the heat exchanger, and then enters the adsorption rotor from the first air outlet of the heat exchanger to perform secondary condensation on the condensed air, thereby further improving the condensation efficiency.

The present disclosure relates to the technical field of aquafarm monitoring, and in particular to a method, system and apparatus for intelligently monitoring an aquafarm with multi-dimensional panoramic perception. The method includes: analyzing preprocessed multi-dimensional panoramic perception information with time series analysis to obtain a linear fitting model; constructing a water quality forecasting-alarming model according to the linear fitting model; inputting fused data to a convolutional neural network (CNN) for training to obtain an electrical device fault diagnosis model; and monitoring an aquafarm with the water quality forecasting-alarming model and the electrical device fault diagnosis model.