The multi-media filter is a typical multi-media filter whose bed is made of anthracite, sand, fine garnet or other materials.

設(shè)備是壓力式的，其原理是當(dāng)原水自上而下通過(guò)濾料時(shí)，水中懸浮物由于吸附和機(jī)械阻流作用被濾層表面截留下來(lái)；當(dāng)水流進(jìn)濾層中間時(shí)，由于濾料層中的砂粒排列的更緊密，使水中微粒有更多的機(jī)會(huì)與砂粒碰撞，于是水中凝絮物、懸浮物和砂粒表面相互粘附，水中雜質(zhì)截留在濾料層中，從而得到澄清的水質(zhì)。經(jīng)過(guò)濾后的出水懸浮物可在5毫克/升以下。

The principle of the equipment is that when the raw water passes through the filter material from top to bottom, the suspended solids in the water will be intercepted by the surface of the filter layer due to adsorption and mechanical resistance; When the water flows into the middle of the filter layer, because the sand particles in the filter layer are arranged more closely, the particles in the water have more chances to collide with the sand particles, so the flocs, suspended solids and sand particles in the water adhere to each other, and the impurities in the water are trapped in the filter layer, so as to obtain the clarified water quality. The suspended solids in the filtered effluent can be less than 5 mg / L.

特點(diǎn)

characteristic

1、多孔介質(zhì)過(guò)濾器廣泛用于水處理的工藝中，可以單獨(dú)使用，但多數(shù)是作為水質(zhì)深度處理的預(yù)過(guò)濾。

1. Porous media filters are widely used in water treatment process, and can be used alone, but most of them are used as pre filtration for advanced water treatment.

2、多介質(zhì)過(guò)濾器是常用的水質(zhì)深度凈化的預(yù)處理裝置，可根據(jù)工藝要求填加不同的濾料。

2. Multi media filter is a common pretreatment device for deep purification of water quality, which can be filled with different filter materials according to the process requirements.

3、多介質(zhì)過(guò)濾器材質(zhì)可采用玻璃鋼、A3鋼防腐或襯膠、全不銹鋼。操作方式有全自動(dòng)和手動(dòng)兩種形式，自動(dòng)控制是采用美國(guó)進(jìn)口的自動(dòng)控制器及氣、液動(dòng)閥控制，操作簡(jiǎn)便易于維護(hù)保養(yǎng)，在各行各業(yè)水處理工藝的前處理裝置得到廣泛的應(yīng)用。

3. The material of multi-media filter can be glass fiber reinforced plastic, A3 steel anti-corrosion or rubber lining, all stainless steel. There are two kinds of operation modes: automatic control and manual control. The automatic control is controlled by the automatic controller and pneumatic and hydraulic valves imported from the United States. It is easy to operate and maintain. It is widely used in the pretreatment devices of water treatment process in all walks of life.

4、多介質(zhì)過(guò)濾器的過(guò)濾材料應(yīng)有足夠的化學(xué)穩(wěn)定性，各介質(zhì)的相對(duì)密度和粒徑應(yīng)有一定差別，由無(wú)煙煤與石英砂組成的雙層濾料過(guò)濾器所用的無(wú)煙煤相對(duì)密度為1.4—1.6，粒徑為0.8—1.8mm，石英砂相對(duì)密度為2.6—2.65，粒徑為0.5—1.2mm;3層濾料過(guò)濾器除了以上兩種濾料外還可以用錳砂、磁鐵礦之類的重質(zhì)礦石，其相對(duì)密度為4.7—5.0，粒徑為0.5—4mm。

4. The filter material of multi-media filter should have enough chemical stability, and the relative density and particle size of each medium should be different. The relative density of anthracite used in the double-layer filter material composed of anthracite and quartz sand is 1.4-1.6, the particle size is 0.8-1.8mm, and the relative density of quartz sand is 2.6-2.65, the particle size is 0.5-1.2mm; In addition to the above two kinds of filter media, the three-layer filter media can also use heavy ores such as manganese sand and magnetite with relative density of 4.7-5.0 and particle size of 0.5-4mm.