Quick answer: A practical wastewater-treatment decision starts with defining the failure mode, then checks pH, COD, ammonia, sludge condition, and process interaction before changing chemistry or operation.
传统凝固剂的分类和应用
- 铁盐、铝盐及其复方药物
铁盐：聚合硫酸铁（PFS）、硫酸亚铁
铝盐：聚合氯化铝 (PAC)、硫酸铝、碱铝
复方药物：复方铝铁
应用效果：预处理去除 SS、脱色和脱脂；高级处理去除 COD 和磷；针对不同行业发挥不同作用。
- 调节片碱、生石灰、熟石灰、复合碱和硫酸的 PH 值。
- 絮凝剂
阴离子、阳离子、非离子 PAM
应用效果：根据水中絮状物的电荷、有机物含量和 PH 值进行选择。
专业医学和应用
- 脱色：常规混凝剂（如硫酸亚铁、聚合硫酸铁等）、有机脱色剂常用于印染废水和皮革废水；
- 除 COD 外：COD 去除剂、Fenton 结合剂，多用于末端的高级处理；它广泛用于造纸、印染、电镀和电路板行业；
- 除磷：除磷剂、其他铁盐、铝盐、钙盐；广泛用于城市污水处理厂和金属表面氧化厂；
- 去除氨氮：氨氮去除剂，主要用于电镀，在电路板行业应用较多；
- 除络合重金属外还有：脱络剂、硫化钠、再捕捉剂；更多应用于电镀厂和电路板；
- 除氟：除氟剂、钙盐、硫酸铝；电镀厂
其他产品介绍
- 生物活性细菌
包括去除氨氮和 COD 的义务菌株，适用于制革、印染、城市污水处理厂、食品厂等污水处理设施的生物活化；功能主要包括形成优势菌和促进微生物的生长繁殖。
- 污泥减水剂
通过减水剂对污泥进行改性和调节，可提高污泥的脱水性能，释放出更多的附着水和结合水。脱水后，污泥含水率降至 60% 以下，便于后续的高级处理。并实现资源化利用。适用于城市污水厂、印染、造纸、污泥集中处置中心等企业的污泥深度脱水。
- 光催化设备
它适用于高浓度难降解废水的脱色、去除 COD 和部分除磷；投资和运行成本较高，更适用于小水量废水处理。
- 电絮凝设备适用于电镀、线路板企业去除化学镍等络合重金属，也适用于去除部分磷；投资和运行成本较高，更适用于水量较小的污水处理。
A practical process checklist for wastewater and sewage-treatment topics
Most wastewater-treatment problems are system problems. Teams usually get a better result when they define the process stage and water-quality target first, then review biological, chemical, and operational factors together before making a plant-scale correction.
- Start from the process stage: pretreatment, biological treatment, sludge handling, and polishing steps can point to very different root causes.
- Check the core water-quality data together: pH, COD, nitrogen, salinity, sludge condition, and dissolved oxygen often need to be read as one picture.
- Review compliance and operability at the same time: the quickest local fix can still be the wrong commercial move if it destabilizes another part of the plant.
- Use pilot or staged validation where possible: wastewater systems often respond differently at scale than they do in simplified bench assumptions.
Recommended product references
- CHLUMIAF 094: A balanced defoamer reference for waterborne coatings and many general foam-control screens.
- CHLUMIAF 3037: A stronger process-defoaming option when persistent foam survives harsher conditions.
- CHLUMIWE 3280: A strong wetting-agent reference for inks, coatings, and difficult substrate wetting.
- CHLUMIWE 3071: Useful when organosilicone wetting support is needed in a broad application screen.
FAQ for buyers and formulators
Why do many wastewater problems resist one-step fixes?
Because the visible symptom is often created by several interacting process variables rather than one isolated cause.
Should operational changes be evaluated only by one output indicator?
Usually no. A stable treatment decision should consider process balance, compliance, sludge behavior, and the effect on downstream steps as well.