Different industries produce different water quality of sewage, and the water purification agents used in the treatment of these sewage are also slightly different. For example, in the water treatment industry, the commonly used coagulant polyaluminum chloride, in different water quality, the type of polyaluminum chloride used is also different.
First, the composition and characteristics of plastic factory sewage. Before understanding the product characteristics of polyaluminum chloride for sewage treatment in plastic plants, let's take a look at small dyeing sewage treatment equipment. Let me take the master to understand the composition and characteristics of the plastic factory sewage. The serious pollutants contained in the plastic factory sewage are: formaldehyde and benzene. Compare the measures and suggestions for sewage treatment. Inorganic pollutants such as toluene, ethanol, and chloroform. The characteristics of plastic factory sewage: the water quality is huge, polluted, and difficult to handle.
The second is the treatment of plastic factory sewage. There are two ways to treat sewage from plastic factories: Do you know the main methods of sewage treatment?
Diversion cooking method, chemical precipitation method. The chemical precipitation method is recommended by our Yisheng Chemical. The use of Lushuijie industrial grade polyaluminum chloride and polyacrylamide can reasonably handle this kind of sewage!
The use of polyaluminum chloride for sewage treatment in plastic plants is as follows:
1. It needs to be prepared into an aqueous solution with a concentration of 3%-5% in advance.
2. Dissolve the powdered polyacrylamide in a stirring tank.
3. Add the prepared PAC solution to the sewage while stirring, and at the same time continuously test the PH value of the water quality.
4. When the pH value of the water reaches weak alkaline, add polyacrylamide to dissolve, and the normal addition amount is 5/1000.
Note: In the process of using polyaluminum chloride and polyacrylamide, the specific addition amount should also be based on: AL2O3 content of polyaluminum chloride, molecular weight of polyacrylamide, turbidity of raw water, PH value of raw water, raw water Water analysis to determine. Therefore, it is recommended that new and old customers conduct a small test according to the water quality in advance to determine the best dosage.