Quartz sand cushion active carbon filter with active carbon powder leakage preventing function

Abstract

The invention discloses a quartz sand cushion active carbon filter with an active carbon powder leakage preventing function. The filter comprises a filter body; a quartz sand cushion and an active carbon layer are arranged in the filter body; the filter body is also provided with a water inlet, a water outlet, a forward washing water drainage port, a backwashing water drainage port and a backwashing water inlet; and a fine sand layer is arranged between the quartz sand cushion and the active carbon layer. According to the quartz sand cushion active carbon filter with an active carbon powder leakage preventing function disclosed by the invention, since a fine sand layer is arranged between the active carbon layer and the quartz sand cushion, the phenomenon of active carbon powder leakage in the use of an active carbon filter is solved.

Description

Technical field [0001] The invention relates to the technical field of water treatment, in particular to a quartz sand cushion activated carbon filter with a function of preventing leakage of activated carbon powder. Background technique [0002] At present, water resources are becoming increasingly scarce, and the deterioration of water quality is becoming more and more serious, especially the pollution of water quality by microorganisms and organic matter. In recent years, in the operation of subcritical, supercritical, and ultra-supercritical units of thermal power plants, the influence of TOC in boiler feed water on boilers and turbines has attracted people's attention. Therefore, GB / T 12145-2008 "Water and Steam Quality of Thermal Power Generating Units and Steam Power Equipment" sets strict limits on TOC indicators in the boiler feed water quality standard. [0003] To make the TOC index reach the standard, it is necessary to remove microorganisms and organic matter in the w...

AI Technical Summary

Problems solved by technology

After these small particles of powdered activated carbon enter the reverse osmosis device, it will cause negative problems such as fouling of the reverse osmosis membrane channel, increase in operating pressure, decrease in water production rate, increase in system pressure drop, and decrease in membrane flux. Membrane damage cannot be recovered by conventional methods

If small particle powder activated carbon enters the ion exchanger, it will also block the adsorption pores of the exchange resin, reduce the exchange capacity of the ion exchanger, shorten the operating cycle, cause frequent backwashing and regeneration of the ion exchanger, increase acid-base consumption and self-water consumption

The main reason for the above situation is that the water outlet device of the activated carbon filter is generally a multi-hole plate water cap or a quartz sand cushion, which has large gaps and easily leads to leakage of activated carbon.

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