Urban life water storage and transport
Common city water has two types: ground water and surface water. In north China, the main source of water is groundwater, while in south China, the main source of water is surface water.
The quality of groundwater is relatively good, after disinfection, it can meet the sanitary standards of drinking water. The amount of underground water cannot be more than the amount that can be mined, Over exploitation will cause the water table to drop and the ground to sink. Surface water generally refers to the fresh water of rivers, lakes, etc. When surface water is used as domestic water, it usually goes through purification treatment such as coagulation, precipitation, filtration and disinfection to make the water quality conform to the sanitary standards.
Non-negative pressure water supply equipment is a pressurized water supply unit directly connected with the municipal water supply network, on the basis of the residual pressure of the municipal pipe network in series superimposed water supply to ensure that the municipal pipe network pressure is not less than the set protection pressure(can be relative pressure of 0 pressure, less than 0 pressure is called negative pressure) of the secondary pressure water supply equipment.
The core of the pipe network pressurized(non-negative pressure) water supply equipment is how to prevent negative pressure during the operation of the secondary pressurized water supply system, eliminate the influence of unit operation on the municipal pipe network, and achieve safe, reliable, stable and continuous water supply without affecting the water consumption of nearby users.
The advantage of no-negative pressure water supply equipment is as follow:
Save the equipment cost investment, covers a relatively small area. It not only saves the investment, but also makes full use of the primary water supply pressure of the tap water network. Can be used in the pressure pump selection for appropriate reduction, to promote the cost of equipment input savings. Secondly, the system occupation area should be saved, and the saved land should be fully utilized to further improve the occupied area of the house, so as to meet the land resource saving effect required by China.
Clean and pollution-free, water supply equipment system settings belong to the fully sealed structure, from the tap water pipe network to know the user's faucet at home, therefore, pollutants will not appear in the water supply system phenomenon. Water will not directly contact the air, using food grade stainless steel on the flow parts, so there won`t be water pollution phenomenon.
Obvious energy saving effect, usually equipment and water pipe network link belongs to the direct series, that is, in the water plant under the condition of a water supply pipe network pressure in the required pressure superposition, according to the shortage of pressure, appropriate increase, make full use of the residual pressure of the pipe network. During the low peak period of water consumption, don`t operate the equipment, and the energy saving effect will be obvious appear.
Simple installation. Since the non-negative pressure stacked water supply equipment belongs to a complete supply system, users only need to connect the inlet and outlet water pipes to use, the construction period is short, and the installation is convenient.
Lower operating costs. Due to the less use in the selection process of the pressure pump, and the method of water supply associated with the pump. Therefore, in the low peak period of urban water, can be used for the city's primary water supply pressure. don`t start the pump or only start the the pump once, so as to realize the demand for urban water. Other pumps can only be started when the peak water consumption comes. Therefore, there will be lower energy consumption in the operation process of the equipment, and the operation cost will be effectively reduced.
The outage phenomenon will not affect the state of the water supply. Since the public water supply network of the equipment is directly connected to the customer network, the primary supply pressure of the waterworks can meet the water demand in the event of a power failure, although the pressurized pump stops operating.
Provide convenience for later management. Because the non-negative pressure stacked water supply equipment belongs to the microcomputer automatic frequency conversion control, so it has the effect of equipment automatic shutdown of power outage and equipment automatic startup of having power. Perfect system of fault detection, technical diagnosis and alarm reminding, and the advantages of relatively simple in the process of equipment management and maintenance. Then, there is no cleaning because there is no contamination.