PLC controlled 3 tank shallow sand filter

Product Introduction

PLC control 3 tank shallow sand filter is mainly used in industrial field of circulating water, feed water, and wastewater filtration. HGBMF's medium filtration system utilizes deep media to effectively remove particulate matter and reduce turbidity. If loaded with a specific filter material, such as activated carbon, zeolite, can also adsorb the corresponding organic matter, ions and so on. The fluidization device in the system (bottom drainage device) can fluidize the filter medium, remove the pollutants trapped in the medium, and discharge them, and get a thorough cleaning.

The characteristics

The backwashing system of shallow sand filter system has three modes: manual, semi-automatic and automatic, which can be started by manual button, internal clock, PLC, pressure difference or management system respectively. Backwash time can be adjusted, set to 3 minutes when leaving the factory. The system has an internal timer that allows you to set the most appropriate backwash time for a particular process situation. By designing special controller, centralized or remote control can be realized.

Shallow sand filter filtration systems can be installed in different ways. The HGBMF filter can be used as a stand-alone filtration system using the existing process water supply pump, or, if used as a by-filter, can be equipped with its own pump. The HGBMF filter can also be installed in multiple processing units on the common pipe, thus achieving unlimited filtration capability of the system.

Using UNIGRAN series filter media, all filter media are carefully selected, washed, dry, the minimum filtration accuracy can reach 0.45 micron. Homogeneous, high-performance filter materials and specially designed filters are used to distribute water above and below, ensuring that HGBMF can achieve excellent filtration results at high flow rates.

Mode of operation

When the system is in the filtering state, the pressurized water flows into the water distribution system from the filter tank inlet and uniformly reaches the filter material layer. When the water filters the material layer, the suspended matter is intercepted by the filter material. At the bottom of the filter is a water collector with a precise gap, and the filtered water is uniformly collected and drained out of the filter. The precise gap on the water collector can effectively prevent the loss of filter material. Mechanical battlements (pneumatic or electric) control the flow of water.

When the system is in the automatic backwash state, the backwash cycle is controlled by increasing pressure differences. With the continuous accumulation of impurities in the filter material layer, the pressure loss continues to increase, when the pressure difference increases to a certain set value, the system will automatically switch to the backwash state. Pressurized water enters the filter material layer through the fluidization device (i.e. the water collection device), scour it, and make the trapped pollutants fall off and discharge out of the filtration system. After the backwash lasts for at least 2 minutes, the valve automatically switches the system to the filtered state.

Product Details