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Cooling tower water filtration system rapid sand filter machine
A rapid sand filter is a water treatment device that uses sand or other grainy media to filter out the solid particles suspended in water. These suspended solids include dirt and other organic matter that cause water to appear cloudy or turbid. Rapid sand filtration is commonly used by municipal water treatment plants to clean surface and ground water intended for drinking water. It is also used to treat sewage and industrial wastewater containing biological contaminants before these waters are discharged to the environment.
Cooling towers recirculation water is large in volumes and gets easily contaminated with suspended solids, atmospheric dust, microbiological organisms, various airborne debris and sometime particulate of rusted metal coming out from heat exchanges. These contamination and impurities get settled either in cooling tower pond or deposit on the surface of Heat exchanges and significantly decrease the performance of cooling tower circuit. Under these circumstances, significant improvement might be realized with the use of a side stream filter and pond cleaning accessories.
Our unique design of Side Stream Filterand cooling tower pond accessories ensures efficient & effective removal of suspended solids & other contaminations and reinforce healthy conditions of cooling tower and associated heat exchangers.
They are available in diameters from 0.225 Mts. to 4.0 Mts.(vertically) and in length from 3.0 Mts. mm to 11 Mts. (Horizontally) with flow ratesup to 500M3/Hr. these rugged, pre-engineered, pre-assembled units minimizeinstallation and start-up costs.
Working principle
For the by-pass filtration, the filter is installed in the main circulating pipeline to filter all the circulating water, but a part of the circulating water LED from the main circulating pipeline is filtered, which is a repeated circulating interception step by step to filter the impurities within the system and finally remove the impurities by the necessary backwash out of the system. Installing a by-pass filter in the circulating water system can prevent the terminal pipe of device from sludge blocking and remove the impurities in the system with chemical dosing.
By-pass filtration is used to reduce the turbidity of the water circulation system, exactly, to reduce slime and prevent its deposition in the heat exchanger, so that the effect of agent will be better.
Generally speaking, if your filter is a quartz sand filter, it usually has two main functions:
1. To reduce suspended solids (turbidity). Otherwise, as the system is running, suspended solids increases, which will exacerbate the deposition and other problems.
2. Degreasing. Especially the oily turbid circulation, such as steel rolling and continuous casting, has high oil content and is easy for breeding microorganism and blocking the nozzles.
Technical description of by-pass filter for the industrial circulating water
Flow filter flow is designed according to 5% to 10% of the total circulation volume (the by-pass filter flow of the cooling water is designed by 10 % of the circulation volume and the by-pass filter flow of chilled water is designed by 5% of the circulation volume) and the filtration rate is designed by 20 — 3Smih according to water quality of the system. Specific to corrosive suspended solids of the circulating water system as well as the control, our technical support team has designed a variety of manual/automatic by-pass filtrating equipment in line with customer demand.
Technical parameters sheet for Mechanical sand carbon filter
model | Filter diameter | Total height | water inlet-outlet | capacity | Quartz sand material | Active carbon material |
mm | mm | mm | m³/hour | ton | ton | |
MMF-500 | 500 | 2350 | DN32 | 2 | 0.39 | 0.11 |
MMF-600 | 600 | 2380 | DN32 | 3 | 0.56 | 0.16 |
MMF-700 | 700 | 2400 | DN40 | 4 | 0.76 | 0.22 |
MMF-800 | 800 | 2400 | DN40 | 5 | 1 | 0.3 |
MMF-900 | 900 | 2500 | DN50 | 6 | 1.3 | 0.36 |
MMF-1000 | 1000 | 2600 | DN50 | 8 | 1.6 | 0.45 |
MMF-1200 | 1200 | 2700 | DN65 | 11 | 2.3 | 0.65 |
MMF-1400 | 1400 | 2800 | DN65 | 15 | 3 | 0.86 |
MMF-1500 | 1500 | 2850 | DN65 | 18 | 3.5 | 1 |
MMF-1600 | 1600 | 2900 | DN80 | 20 | 4 | 1.2 |
MMF-1800 | 1800 | 3000 | DN80 | 25 | 5 | 1.5 |
MMF-2000 | 2000 | 3100 | DN100 | 30 | 6 | 1.8 |
MMF-2200 | 2200 | 3180 | DN100 | 38 | 7.5 | 2.2 |
MMF-2400 | 2400 | 3330 | DN100 | 45 | 9 | 2.5 |
MMF-2500 | 2500 | 3380 | DN100 | 50 | 9.7 | 2.8 |
MMF-2600 | 2600 | 3430 | DN125 | 55 | 10 | 3 |
MMF-2800 | 2800 | 3530 | DN125 | 60 | 12.5 | 3.5 |
MMF-3000 | 3000 | 3630 | DN125 | 70-80 | 14 | 4 |
MMF-3200 | 3200 | 3730 | DN150 | 80-100 | 14 | 4.5 |