Application range
Widely used in food, medicine, electronics, chemical industry, industrial wastewater and other industries.
1. It can meet the requirements of the hydraulic system for filtration accuracy and can prevent certain impurities from entering the system.
2. The filter element should have sufficient strength and will not be damaged by pressure.
3. The flow capacity is large and the pressure loss is small.
4. It is easy to clean and replace.
Product features
1. The cylinder of the activated carbon adsorption filter adopts a hydraulic simulation long-diameter design, and uses high-efficiency activated carbon with a reasonable particle size and a specific surface area greater than 1000m2/g, so that it has both upper-layer special-effect filtration and lower-layer high-efficiency adsorption functions, which greatly improves the degree of water purification and the service life of carbon.
2. The residual chlorine content of water after treatment by the HG activated carbon adsorption filter: ≤0.1PPM.
3. Excellent performance in odor, organic matter, colloid, iron and residual chlorine in water.
4. It also has a good effect on reducing the turbidity and color of water bodies, purifying water quality, and reducing pollution to subsequent systems (reverse osmosis, ultrafiltration, ion exchangers).
Product advantages:
1. High efficiency: 24-hour continuous operation without stopping for backwashing.
2. Low operating cost: No high-lift and high-flow backwashing pump is required.
3. Low maintenance cost: There are no rotating parts except quartz sand filter media during operation, with low failure rate and low maintenance cost.
4. Low one-time investment: No need to set up coagulation tanks, clarification tanks and other facilities, no need for backwashing pumps and electric and pneumatic valves and other equipment, small engineering volume, and low one-time investment.
5. Small head loss: single filter media and timely cleaning of filter media, small head loss, total head loss ≤0.5m.
6. Loose requirements for influent water quality: It can withstand 150mg/L SS influent water quality for a long time, and withstand 300mg/L SS concentration for a short time without changing the effluent water quality.
7. The effluent water quality is stable and the filtering effect is good. The filter material is cleaned in time to ensure high-quality and stable effluent effect, without periodic water quality fluctuations.
8. Easy to modify and expand: The unit operation method adopted can flexibly increase or reduce the number of filters according to the change of water volume, which is easy to modify and expand.
9. Small footprint and beautiful appearance: It integrates the traditional three-stage recycled water treatment process, saving about 70-80% of land, the appearance is more beautiful and compact.
1. Introduction to Quartz Sand Filter
Sand filter, also known as quartz sand filter, is also called mechanical filter, and its scientific name is shallow medium filter. It uses quartz sand as the filter medium. Under certain pressure conditions, water with high turbidity passes through a certain thickness of granular or non-granular quartz sand from top to bottom. Some suspended matter, organic matter, colloidal particles, microorganisms, chlorine, odor and some heavy metal ions in the water are trapped in the sand, and finally the purpose of reducing water turbidity and purifying water quality is achieved. Quartz sand filtration is one of the most effective means to remove suspended matter in water. It is an important unit in sewage deep treatment, sewage reuse and water supply treatment. It is mainly used for water treatment turbidity removal, softening water, ultrafiltration, nanofiltration, and reverse osmosis pretreatment.
2. Working Principle
The adsorption of mechanical filters is a physical adsorption. According to the filling method of the filter material, it can be roughly divided into loose area (coarse sand) and compact area (fine sand). The suspended matter in the loose area mainly produces contact condensation through flow contact, so this area intercepts larger particles of suspended matter. In the compact area, it is mainly inertial collision and adsorption between suspended particles, so this area intercepts smaller particles of suspended matter.
When the mechanical filter affects its normal operation due to interception of excessive mechanical impurities, it can be cleaned by backwashing. Reverse water inlet and compressed air are introduced at the same time to scrub the air-water mixture to loosen the sand filter layer in the filter, so that the intercepted matter adhering to the surface of the quartz sand can be peeled off and taken away by the backwash water flow, which is conducive to removing sediment, suspended matter, etc. in the filter layer, and preventing the filter material from being compacted, so that it can fully restore its interception capacity, thereby achieving the purpose of cleaning.
3. Structural Features
The sand filter adopts a stainless steel operating valve group, and the filter start-up, forward washing, backwashing, and shutdown processes are all manually controlled.
The equipment body is a cylindrical steel structure with upper and lower elliptical heads. The filter is made of Q235-A or 304 stainless steel, lined with vulcanized rubber for corrosion protection. There is a water distributor at the water inlet inside, and a water collection device at the bottom. The water collection device is filled with 1400mm quartz sand. The body of the complete set of equipment is equipped with various control valves, flow meters, and pressure gauges. The filling material of the mechanical filter includes refined quartz sand. (From top to bottom) The filling height is as follows (it can be divided into multiple categories according to water volume and water quality):
Quartz sand 0.4-0.6mm700mm.
Quartz sand 0.6-1.2mm200mm.
Quartz sand 1.2-2.0mm200mm.
Support layer 3.0-5.0mm300mm.
