The use of polyaluminium chloride and the matters needing attention
Polyaluminium chloride is a high performance polymer flocculant. Compared with other similar products, it has the advantages of stable molecular structure, large flocs, fast settling speed, low cost and good coagulation effect. As a better sewage treatment method, polyaluminum chloride is mainly used for the treatment of domestic sewage and industrial wastewater. Because there are many influencing factors in the treatment process, such as water temperature, pH value, water conservancy conditions, input amount, etc., the pH value has a greater impact on sewage treatment, soPolyaluminum chloride manufacturersDifferent amounts of products will be put into different sewage treatments. The difference in the amount of delivery will directly affect the effect of the treatment. How should polyaluminium chloride be used? What should be paid attention to during use?
First of all,Polyaluminum chloride manufacturersThe use of products can be roughly divided into four simple items:
1, according to the different conditions of raw water, before use can do a small test to obtain the excellent dosage, in order to facilitate the calculation, the small test solution configuration according to the weight volume ratio, generally with 2 ~ 5% is better, and then shake well;
2. Proportion:Polyaluminum chloride manufacturersIt is recommended to mix and dissolve in a ratio of about 1:5, and then add water to dilute to 2-3%. The solution below 1% is easy to hydrolyze, and the use effect will be reduced, and the concentration is too high, which is easy to cause waste;
3, dosing according to the obtained excellent dosage, dosing polyaluminum chloride agent is preferred, and always pay attention to observation and adjustment during operation.
Secondly, polyaluminum chloride in the use of the process has the following precautions:
1, before use can be tested, polyaluminium chloride for inorganic polymer compounds, soluble in water, there is a certain degree of corrosion, should be based on the raw water quality is different, before use should do a small test, according to different circumstances to use the dosage;
2. When in use, liquid products are made into 5-10% water solution, and solid polyaluminum chloride products are made into 3-5% water solution;
3、Polyaluminum chloride manufacturersIt is suggested to pay attention to observation and adjustment at all times. If the alum flower in the sedimentation tank is less and the residual turbidity is large, the dosage is too small;
4. Less than 1% solution is easy to hydrolyze, which will reduce the use effect of polyaluminum chloride, and the concentration is too high to cause waste, and it is not easy to control the dosage;
5, can not be used in strong acidic or alkaline environment, more can not be dissolved with sewage or wastewater;
6. The stirring and dissolution time of the dissolved agent is 5-10min, and the static dissolution time is 0.8-1h;
7. The dosage of this agent shall be added according to a certain percentage, and the specific quantity shall be determined according to the sewage concentration and treatment standard.
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