Water purifier for kitchens

Abstract

The invention relates to a water purifier for kitchens, which comprises a closed tabulate casing and a power supply, wherein at least two pairs of negative electrodes and positive electrodes are arranged in the closed tabulate casing; the positive electrodes and negative electrodes are respectively connected with the positive pole and negative pole; the position adjacent to a water inlet in the casing is provided with one positive electrode, the position adjacent to a water outlet in the casing is provided with a negative electrode, and at least two stages of conductive filter layers of which the filter precision increases gradually are arranged between the water inlet and water outlet and positioned between the negative electrode and positive electrode; an ionic barrier film with water-permeable pores is arranged between the positive electrode at the water inlet and the negative electrode matched with the positive electrode; and the first stage of filter layer is arranged between the positive electrode at the water inlet and the ionic barrier film, and the rest of filter layers are arranged between the negative electrode of the matched positive electrode at the water inlet and the negative electrode at the water outlet. The electrochemical water treatment and filtration are integrated to constitute an organic integral body under inseparable synergic actions of electrochemical treatment and filtration treatment, thereby implementing deep purification of source water.

Description

technical field [0001] The invention relates to a device for purifying domestic water (such as kitchen water), and belongs to the technical field of water treatment. Background technique [0002] As the pollution of tap water is becoming more and more serious, human beings are also paying more and more attention to their own health issues. In daily life, micro-pollutants in domestic water supply generally enter the human body through three channels: drinking, breathing and skin absorption. [0003] Although kitchen water consumption only accounts for 10% to 15% of the total household water consumption, it is the main application place of household water treatment equipment. Kitchen water can be roughly divided into: 1) water for making tea and direct drinking; 2) water for cooking rice and soup; 3) water for washing fruits and vegetables; 4) water for cleaning and disinfecting tableware; 5) water for cleaning kitchen utensils and stoves; kitchen water There is also the fea...

AI Technical Summary

Problems solved by technology

[0005] 1. The pre-treatment, especially the intermediate link-activated carbon, plays an important role in linking the past and the future, but it is extremely susceptible to premature saturation failure such as bacterial contamination, requiring regular door-to-door service by professionals for frequent replacement, and also increases the probability of joint leakage

[0006] 2. Since the front-stage pretreatment cannot work effectively, the load on the post-stage ultrafiltration (nanofiltration, reverse osmosis) processing unit is greatly increased, so that its design capacity has to be increased, and the cost of the whole machine has also increased accordingly

[0007] 3. Due to the unreasonable load distribution of the treatment work at the front, middle and back stages, the front-stage filter elements need to be replaced frequently, resulting in the existing water purifiers being multi-stage assembly structures, which cannot be integrated into one reactor, and the performance-price ratio is extremely high. At the same time, it also leads to early damage and failure of the rear-stage membrane filtration unit, and the life of the whole machine is short. This is another reason why the water purifier cannot really become a household appliance product.

However, the specific surface area of ​​KDF is not large, and the price is relatively expensive, so it is usually used in combination with activated carbon; moreover, the potential difference of the spontaneous primary battery of KDF is too low, and the redox effect is insufficient

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