Ultrafiltration can not go to scale RO water purifier wastewater how to do?

As the economy continues to grow and living standards improve, people are becoming more conscious of their health and well-being. With rising concerns about environmental pollution, especially water quality, there is a growing interest in household water purification systems. Many families now consider installing such equipment during home renovations, as it often involves plumbing and electrical work that should be planned in advance. **1. Is Tap Water Safe to Drink?** In China, most tap water undergoes chlorination treatment, but after long-distance transportation through aging pipes, it can become contaminated again. Common issues with tap water include residual chlorine, impurities, rust, heavy metals, bacteria, viruses, and both organic and inorganic compounds. While boiling water can kill most bacteria, it doesn’t remove other contaminants like heavy metals or chemicals. Although drinking boiled water for a lifetime may not cause immediate harm, some risks are chronic and can accumulate over time. It’s wise to invest in water purification if your budget allows. Prevention is always better than cure, and ensuring clean water is a smart choice for long-term health. **2. What Are the Needs for Household Water Purification?** Household water is used for a variety of purposes—brushing teeth, washing hands, bathing, doing laundry, washing vegetables, cooking, drinking, flushing toilets, watering plants, and more. Based on these needs, I categorize water usage into three main types: general cleaning (like watering and rinsing), daily washing (such as handwashing and bathing), and drinking. There are several types of water purifiers available, each designed for different needs. The most advanced is the RO membrane reverse osmosis system, which removes nearly all impurities, making the water safe to drink directly. These systems require electricity and produce “waste water,” so it’s important to plan for a power outlet and drainage connection. They’re typically installed under the sink, and while older models use storage tanks, newer ones eliminate the need for a tank by increasing the membrane area, allowing faster filtration at a higher cost. When choosing an RO system, pay attention to the wastewater ratio. Systems that produce too much waste water are inefficient, and those that produce none may not be effective. A good balance is ideal. Also, remember that filters need regular replacement—every 6 to 12 months depending on water quality—and this adds to the annual maintenance cost. Another option is the ultrafiltration system, which removes chlorine, particles, and most bacteria but doesn’t eliminate scale or heavy metals. It’s less expensive, but not ideal for direct drinking. Water softeners, on the other hand, don’t purify water but reduce hardness by removing calcium and magnesium. They are useful in hard water areas or for those with sensitive skin, as they make bathing feel smoother. However, they are costly and take up space, so they’re only recommended if your water is very hard. Lastly, a pre-filter is essential. Installed after the main water meter, it removes large particles like rust and sediment, protecting downstream purification systems. A manual backwash model is affordable and efficient. In summary, for most households, combining a pre-filter with an RO membrane system provides the best protection for drinking water. It ensures clean, safe water while minimizing long-term maintenance and costs.

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