有不产生废水净水器吗？

Yes， there are water purifiers that do not produce wastewater， or very little wastewater， and are therefore called zero-waste water purifiers. These purifiers use a process called reverse osmosis (RO) to purify water， where water is forced through a semi-permeable membrane that filters out impurities， bacteria， and other contaminants. The purified water is then stored in a tank for drinking and cooking.

One type of zero-waste water purifier is the countertop RO system that comes with a small holding tank for purified water. These purifiers can produce up to 75 gallons of purified water per day， and only a small amount of wastewater is generated during the process. Some models have a built-in pump to increase water pressure， while others rely on water pressure supplied by the home’s plumbing system.

Another type of zero-waste water purifier is the under-sink RO system that is installed under the kitchen sink with a faucet for dispensing purified water. These purifiers can produce up to 50 gallons of purified water per day and only produce a small amount of wastewater. They require professional installation and are more expensive than countertop models.

Both types of zero-waste water purifiers require regular maintenance， such as replacing filters and cleaning the membrane， to ensure optimal performance and water quality. They are also more expensive than other types of water purifiers， but they offer a sustainable and eco-friendly solution to providing safe and clean drinking water without producing wastewater.