What Are The Bathroom Wastewater Treatment Methods?

Wastewater treatment has always been the focus of environmental protection. There are various types of wastewater, such as electroplating wastewater, pickling wastewater and cleaning wastewater. Today, I will give you a simple popularization of the basic knowledge of environmental protection water treatment, and focus on the introduction. What are the treatment methods of bathroom wastewater?

The components of wastewater in the bathroom industry are mainly electroplating wastewater containing metal elements. This wastewater is difficult to treat and has complex components. If there is no electroplating wastewater treatment, the sewage discharged from the electroplating workshop will produce more complex and toxic components such as nickel, chromium, ammonia nitrogen, COD, etc., which will be directly discharged into nature and will cause great harm to the human body. Therefore, Wastewater must be carefully treated before discharge.

At present, the treatment method of sanitary wastewater generally adopts the physicochemical treatment method. There are various treatment methods, and many of them can produce effects, but the overall effect of reaching the standard is not large. In the process of electroplating and metal electroplating wastewater treatment, there are many toxic substances and high toxicity, and there is a risk of carcinogenic, teratogenic and mutagenic, and the harm to human beings is huge. The water in the electroplating plant wastewater treatment process must be carefully recycled to eliminate or reduce its pollution to the environment.

1. Ion Exchange Method
The method of treating electroplating wastewater by ion exchange method is mainly to use the exchange ions in the ion exchange resin to exchange some ions in the electroplating wastewater and then remove them, so that the electroplating wastewater after the electroplating wastewater treatment can be purified. However, if the ion exchange method is used, the investment cost will be relatively high, and the system design and operation management will be more complicated. Generally, for small and medium-sized enterprises, due to improper maintenance or management, the expected effect cannot be achieved, so it is widely used in the promotion and application. are also subject to certain restrictions.

2. Air Flotation
When the electroplating wastewater is treated by the air flotation method of the electroplating solution, the air is introduced into the water to generate tiny bubbles, which are formed by the adhesion between the bubbles and the fine suspended matter. To achieve the separation effect of suspended substances in water. The air flotation mainly deals with the chrome plating process. Ferrous sulfate and hexavalent chromium undergo redox under acidic conditions, form flocs under alkaline conditions, and the flocs surface under the action of countless fine bubbles, making the water flocs clean.

3. Extraction Method
The leaching method to treat electroplating wastewater is mainly to use a solvent that is insoluble in water but can dissolve a certain substance in the water and put it into the electroplating wastewater treatment process, so that the solute can be fully dissolved in the solvent, and then separated or recovered from the electroplating wastewater treatment. method of a substance.

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