Drinking water deeply purifying method and device

Abstract

The invention discloses an advanced purification method for drinking water and a device thereof. The advanced purification process for drinking water is explored aiming at generally existing micro-polluted source water and the process combines a biological activated carbon filter and an ultrafiltration membrane biological reactor to purify the drinking water in an advanced way. After the raw water being treated enters the biological activated filter first, the particulate matters in the water being partly intercepted; pollutants like organic matters and ammonia nitrogen and so on are partly degraded and the water quality is purified to some degree; load of the ultrafiltration membrane biological reactor is reduced; the water in the filter is discharged into the ultrafiltration membrane biological reactor; the activated sludge in the reactor biologically treats the water from the filter and the pollutants ammonia nitrogen and the organic matters in the water are degraded again; at last, the water after two-level biodegradation is drawn form ultrafiltration membrane component by a draw-suck pump and the remarkable effect of removal of particulate matters as well as interception of two insects, daphnia, red worms, alga, bacteria and even virus of the ultrafiltration membrane can be brought into play.Therefore, the safe and clean drinking water with excellent quality can be prepared.

Description

technical field [0001] The invention belongs to the technical field of water treatment, in particular to a method and a device for deep purification treatment of drinking water through the combined use of a biological activated carbon filter and an ultrafiltration membrane bioreactor. Background technique [0002] Since the protection of water sources has not received enough attention for a long time, drinking water sources are generally polluted, and a large variety of trace organic pollutants that are poisonous to the human body have been found in drinking water, such as carcinogenic, teratogenic, mutagenic substances, and chlorination. Disinfection by-products. Under this background, the ozone-granular activated carbon treatment process was developed, which played a better role in ensuring the quality of drinking water. With the development of water quality detection technology, many new water quality problems have been discovered, such as Giardia and Cryptosporidium (tw...

AI Technical Summary

Problems solved by technology

However, the ability of ultrafiltration alone to remove dissolved organic matter in water is very limited, especially small molecular weight and easily biodegradable organic matter, which can hardly be removed by ultrafiltration

However, this part of small molecular weight organic matter will cause water biological stability problems, causing bacteria to multiply in the pipe network again, deteriorating water quality

At the same time, ultrafiltration cannot remove ammonia nitrogen

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