146results about How to "Improve water safety" patented technology

The invention discloses a filter back washing water recovery processing method and a membrane filtration system thereof. The filter back washing water recovery processing method comprises: 1. pretreating; 2. filtering membranes; and 3. sterilizing. The membrane filtration system utilizes a submersible pump to pump back washing water into a water inlet tank, and water is fetched from the water inlet tank by a water inlet pump and is filtered after being fed to a membrane assembly; part of filtered clean water enter the back washing water tank to participate in the back washing process and is reversely pumped into the membrane assembly by a back washing water pump; and compressed air is blasted in by a pressure tank and an air compressor arranged on the inlet end of the feed liquid of the membrane assembly to clean the membrane assembly. The invention not only improves recycling water quality safety of back washing water in filters in waterwork but also reduces the influence of safety risk when being directly used on a main technology in the waterwork. The invention has the recovery rate of back washing water of 95%, improves the recycling water quality safety of back washing water in filters in the waterwork and lowers the pure water load of main technology.

The invention discloses a resistance self-adaptive variable structural cavitator. The resistance self-adaptive variable structural cavitator comprises a conical cavitator part, a movable part and an elastic part. The conical cavitator part comprises a conical head part and a cylindrical tail part. The cylindrical tail part is connected with the bottom surface of the conical head part. The elastic part is located at the cylindrical tail part and located at the end, away from the conical head part, of the cylindrical tail part. The movable part envelops the outer side of the conical cavitator in a winding mode, and can slide at the cylindrical tail part. The resistance self-adaptive variable structural cavitator has the beneficial effects that under different ship speeds and ship depths of a aircraft, a structure is adjusted through resistance, dimension of cavitation is maintained effectively, stress of the aircraft is stable, and drastic changes of a wet state of the aircraft caused by speed change are reduced; the impact of changes of the cavitation number on resistance is reduced, and the resistance fluctuation range of the aircraft is reduced; and when the aircraft is restricted by water entry impact, the structure is changed through elastic materials, the buffing time of the aircraft is increased, the water entry impact force is reduced, and the safety of water entry is improved.

The invention provides a data acquisition, monitoring, early warning and maintenance method for an intelligent water service pipe network. The method comprises the following steps: a, acquiring position information of a mobile terminal of a user, a water fee payment record of the user and historical water use time period data through a cloud server; b, monitoring the intelligent water meter in real time to obtain flow information of the intelligent water meter; c, after the intelligent water meter detects the water flow information, judging whether the mobile terminal is located in a preset position or not, and outputting alarm information to the mobile terminal according to the judgment result. The position of the user is judged through the position of the mobile terminal, the water flow condition in the home of the user is monitored according to the position of the user, and whether the water leakage condition occurs in the home of the user or not is judged according to the historical water use condition, so that an alarm can be given to the user in time, and a pipeline is cut off in time; therefore, water leakage detection and alarm can be effectively carried out in the home of the user, so that the loss of the user caused by water leakage is reduced, and the waste of water resources is avoided.

The invention discloses a method for removing manganese in drinking water through oxidation and filtration, and belongs to the technical field of drinking water treatment. According to the method, different oxidants are added at corresponding structures in a segmented manner by adoption of a sequence of KMnO4-O3-NaClO-KMnO4, so that the manganese removal effect of source water can be ensured, the water supply safety is increased, the agent consumption is decreased, the water production cost is reduced and a certain effect is provided to decrease the disinfection by-products. The cost of NaClO is much lower than that of KMnO4, but the amount of unit mass of an NaClO electronic acceptor is 4.2 times of that of a KMnO4 electronic acceptor, so that the use amount of the KMnO4 can be greatly decreased through importing the NaClO and then the medicament cost is reduced.

The invention discloses a box-type pipe network pressure-superposed water supply device. The box-type pipe network pressure-superposed water supply device mainly comprises a stainless steel water tank, an electric switch device, an auxiliary pump supercharging device, a water sterilizer, a water pump and a control cabinet, wherein the stainless steel water tank is arranged in front of a water sucking main pipe of the water pump, tap water inlet pipes are separated into two ways for water inflow, one way is a water tank inlet pipe connected with the stainless steel water tank, and the other way is a direct water supply pipe of the water pump, connected with the water sucking main pipe, and directly provides a pressured water source to the water pump, the stainless steel water tank is connected with the water sucking main pipe through the water tank outlet pipe, the auxiliary pump supercharging device is arranged on the water tank outlet pipe, and the water sterilizer is arranged behind the auxiliary pump supercharging device. The box-type pipe network pressure-superposed water supply device has the advantages of achieving a switch between pipe network pressure-superposed water supply and stainless steel water tank water supply, furthermore having water tank regulating functions, achieving energy-saving effects by using water pipe network pressure, and improving water supply safety, and particularly applying to the occasions of frequent water supply pauses or insufficient water pipe network water supply of a tap water pipeline network during a water use peak period.