做工业清洗的都知道，清洗槽里的水用不了几天就浑了，油污、铁屑、清洗剂混在一起，直接排掉可惜，处理达标再排又要花一笔污水处理费。尤其是超声波清洗和喷淋清洗线，水耗不小，一年下来水费和排污费加在一起，不是个小数目。低温废水回收设备这几年在机加工、汽配、五金行业用得多起来，核心逻辑就一个：把清洗废水里的水和有用成分回收回来，循环使用，减少新鲜水补入和废水排放。

Those who do industrial cleaning know that the water in the cleaning tank will become turbid in just a few days, with oil stains, iron filings, and cleaning agents mixed together. It's a pity to discharge it directly, and it will cost a sewage treatment fee to treat it up to standard before discharging. Especially for ultrasonic cleaning and spray cleaning lines, the water consumption is not small, and the combined water and sewage fees over the course of a year are not a small amount. Low temperature wastewater recovery equipment has been widely used in the machining, automotive parts, and hardware industries in recent years. The core logic is to recover the water and useful components in the cleaning wastewater, recycle them, and reduce the intake of fresh water and wastewater discharge.

低温回收的原理，靠的是加热蒸发而不是膜过滤。 常见的水处理方式有膜过滤、化学沉淀、生化处理，但这些方法对含油、含清洗剂的工业废水往往力不从心——膜容易堵，化学法产生污泥，生化法对水质波动敏感。低温废水回收走的是另一条路：在较低温度下（一般40到50摄氏度）对废水进行加热蒸发，水变成蒸汽后冷凝成蒸馏水回用，油污、清洗剂、金属盐类留在浓缩液里定期排出。因为蒸发温度低，能耗比传统蒸馏低不少，而且对废水成分的适应性更宽，不像膜系统那样娇气。

The principle of low-temperature recovery relies on heating evaporation rather than membrane filtration. Common water treatment methods include membrane filtration, chemical precipitation, and biochemical treatment, but these methods are often inadequate for industrial wastewater containing oil and cleaning agents - membranes are prone to clogging, chemical methods produce sludge, and biochemical methods are sensitive to water quality fluctuations. The recycling of low-temperature wastewater follows another path: the wastewater is heated and evaporated at a lower temperature (usually 40 to 50 degrees Celsius), and the water is condensed into distilled water for reuse. Oil stains, cleaning agents, and metal salts are left in the concentrated solution and regularly discharged. Because the evaporation temperature is low, the energy consumption is much lower than traditional distillation, and the adaptability to wastewater components is wider, unlike membrane systems which are delicate.

回收的水能用到什么程度，取决于原水水质和回收工艺。 如果清洗线对水质要求不高，比如粗洗段，回收水直接补回去就行；如果漂洗段要求电导率低，回收水可能还要经过离子交换或者反渗透再处理。选型时要弄清楚两件事：一是你的废水里主要含什么，是切削液、防锈油还是清洗剂，成分不同，蒸发浓缩的倍数和排浓缩液的周期也不一样；二是回收水准备用在哪一段，回用要求越高，后处理环节越多，投资也越大。有些项目买回来发现回收水只能用于冲厕所，和当初设想的“回清洗槽”差距很大，就是前期没把水质要求对齐。

The extent to which recycled water can be used depends on the quality of the raw water and the recycling process. If the cleaning line does not require high water quality, such as in the coarse washing section, the recycled water can be directly replenished; If the rinsing stage requires low conductivity, the recovered water may also need to undergo ion exchange or reverse osmosis treatment. When selecting a product, two things need to be clarified: first, what is the main content in your wastewater, whether it is cutting fluid, rust proof oil, or cleaning agent? The composition is different, and the evaporation concentration factor and the cycle of discharging the concentration solution are also different; The second is where to reserve the recycling level, the higher the recycling requirements, the more post-processing steps, and the greater the investment. Some projects have found that recycled water can only be used for flushing toilets, which is very different from the originally planned "backwash tank" because the water quality requirements were not aligned in the early stage.

浓缩液怎么处理，是容易被忽略的末端问题。 低温蒸发把水回收了，剩下的浓缩液里富集了油污和盐分，量虽然不大，但属于危废或者高浓度废水，不能随便倒。正规做法是委托有资质的单位处理，或者配套进一步的减量设备。选型时要问清楚浓缩液的产生量和处理建议，把这部分运行成本算进去，不能只算回收水省了多少钱。另外，蒸发器本身也需要定期清洗，换热面上结垢后效率下降很快，维护周期和清洗方式要提前了解。

How to handle concentrated solution is a terminal issue that is easily overlooked. Low temperature evaporation recovers the water, and the remaining concentrated solution is enriched with oil and salt. Although the amount is not large, it belongs to hazardous waste or high concentration wastewater and cannot be poured casually. The formal practice is to entrust qualified units to handle or provide further reduction equipment. When selecting, it is important to clarify the amount of concentrated liquid produced and treatment suggestions, and include this part of the operating costs, not just how much money is saved by recycling water. In addition, the evaporator itself also needs regular cleaning, and the efficiency decreases quickly after scaling on the heat exchange surface. The maintenance cycle and cleaning method should be understood in advance.

能耗和运行成本，才是判断值不值得上的关键。 低温蒸发虽然比高温蒸馏省能，但加热和冷凝还是耗电或者耗蒸汽。如果厂里有余热资源，比如空压机余热、锅炉蒸汽冷凝水，用来给蒸发器供热，运行成本能降一大截。如果没有余热，纯靠电加热，就要仔细算算水费、排污费和电费之间的账。一般来说，废水排放成本高、新鲜水价格贵的地区，低温回收的回本周期更短；如果当地水价便宜、排污费低，这套系统的经济性就要重新评估。

Energy consumption and operating costs are the key to determining whether a value is worth it or not. Although low-temperature evaporation saves energy compared to high-temperature distillation, heating and condensation still consume electricity or steam. If there are waste heat resources in the factory, such as air compressor waste heat and boiler steam condensate, used to supply heat to the evaporator, the operating cost can be greatly reduced. If there is no waste heat and pure electric heating is used, it is necessary to carefully calculate the balance between water, sewage, and electricity bills. Generally speaking, in areas with high wastewater discharge costs and expensive fresh water prices, the payback period for low-temperature recycling is shorter; If the local water price is cheap and the sewage fee is low, the economic viability of this system needs to be reassessed.

低温废水回收设备不是万能的水处理方案，它适合的是含油、含清洗剂、成分复杂但水量不大的工业清洗废水。把水质、回用要求、浓缩液处理和运行成本这几件事算清楚，这套设备才能真正帮你省钱。

Low temperature wastewater recovery equipment is not a universal water treatment solution. It is suitable for industrial cleaning wastewater containing oil, cleaning agents, complex components, but small water volume. Only by calculating the water quality, reuse requirements, concentrate treatment, and operating costs clearly can this equipment truly help you save money.

本文由低温废水回收设备友情奉献.更多有关低温废水回收设备的知识请点击:http://www.sinokohl.com 我们将会对您提出的疑问进行详细的解答，欢迎您登录网站留言。

This article is a friendly contribution from low-temperature wastewater recovery equipment For more knowledge about low-temperature wastewater recovery equipment, please click: http://www.sinokohl.com We will provide detailed answers to your questions. You are welcome to log in to our website and leave a message.