Water pump room type is more, according to the pump layer set location can be divided into ground type, underground type and semi-underground type. Ground pump room has the advantages of convenient construction, low cost and good operating conditions, but at the same time there is the need to start before the pump water diversion and other shortcomings; and underground pumping station pump start more convenient, the disadvantage is that more timber, complex construction, cost High, not as good as the ground environment, easy to be flooded, daily operation and management is not convenient, need to climb the stairs up and down. In recent years, some construction units, regardless of the actual situation, but to visit the field to see some of the more common, more popular, come back and simply the same choice , Has brought hidden trouble for the later production operation. In fact, the choice of pump room type has its own influence factors, including: 1. Arrangement of Unit The arrangement of pump unit is the main content of the pump station layout, which determines the size of pump room floor area. The unit layout should be kept safe, Easy handling, maintenance and management. 2. Water source water level and water level Water level directly related to the pump installation height. When the water level is low, in order to meet the requirements of the water absorption performance of the water pump, the pump shaft height must be correspondingly reduced, and even an underground pump house can be used to meet this requirement; otherwise, the pump shaft height can be properly raised when the water level is high. Therefore, the level of the water level is undoubtedly one of the constraints of pump room type selection. The changing range of water level is another constraint to choose the type of pump room. Larger water level changes, we must take measures to ensure water safety at low water levels. Such as the use of underground pump room or removable water pump room. Jiangnan area groundwater as the water source of water purification plant, water source amplitude amplitude is small, generally less than the pump effective suction, water purification plant natural ground elevation slightly higher than the highest water level. Due to the simple structure of the ground-type pump room, timber province, easy construction, low cost, high safety, ventilation and lighting moisture and other conditions are better, so this type of water plant should focus on the ground pump room or semi-underground pump room . Groundwater as the water source of water or water level fluctuate larger surface water plants, the main consideration should be to use underground pump room to ensure that the water pump to meet the performance. In addition, the change of water level directly affects the safety of pumping station and the normal operation of the pump. Therefore, reducing the pump installation elevation to meet the water pump performance requirements, we must also take measures such as impermeable structure to prevent the high water level on the pump house submerged danger. 3. Water pump performance As we all know, pump room depth and pump room type, in most cases depends on the installation of the pump height, and pump installation height is directly related to the water absorption of the pump, the pump has its rated allowable suction The height of the vacuum, the greater the value, which means that the pump shaft and water surface elevation difference can be greater, the pump shaft can be raised accordingly, and even ground pump room. Conversely, the pump shaft elevation must be reduced and the pump room depth must be correspondingly increased. Water purification plants commonly used pumps horizontal centrifugal pump, the general suction allows the vacuum height of about 5 meters. When we determine the type of pump room, under the premise of ensuring that cavitation does not occur, we should make full use of the suction pump allows the vacuum height, even with underground or semi-underground pump room, but also to minimize the depth of the pump station , Reduce project cost. 4. Pump suction pipe suction pipe should minimize pipe fittings, reduce the length of the suction pipe, and to prevent submerged suction pipe inlet depth is not enough, resulting in inhalation phenomenon. The greater the pump installation height, the longer the water absorption pipe, pump house selection must also be noted.