日韩美一级 I 成年人www I 国内激情自拍 I 激情文学小说区另类小说同性 I 亚洲精品免费av I 欧美日韩精品一二三区 I 福利在线国产 I 少妇性l交大片久久免费 I 99r精品在线 I 国产精品熟妇视频国产偷人 I 校园春色另类小说 I 夜鲁夜鲁狠鲁天天在线 I 国产精品入口久久 I 亚洲国产天堂久久综合 I 琪琪午夜伦理影院的播出平台 I 九色蝌蚪av I 欧美粗又大 I 超碰97人人做人人爱综合 I 天天av网 I 9色在线观看 I 精品国产一区二区三区av小说 I 奇米网狠狠 I 在线观看亚 I 制服肉丝袜亚洲中文字幕 I 日日干日日 I 2025国产精品自拍 I 久热中文 I 亚洲熟乱xyzcc I 日本黄免费 I 国内自拍视频网

　　The degree of sewage pollution and the types of pollutants are different, so the type of polyacrylamide used will also be different, so what should be paid attention to when choosing?

　　Polyacrylamide

　　1. Sewage properties:

　　When treating sludge in wastewater, we need to know whether the wastewater is organic or inorganic, so that we know what polyacrylamide to choose for treatment. For example, after we know it is organic sludge, we know to use anionic polyacrylamide. On the contrary, inorganic sludge is treated with cationic polyacrylamide.

　　2. Sewage turbidity

　　In addition to the nature of sewage, we also need to understand the turbidity of these sludges, so that we can know how much polyacrylamide should be used per ton of sewage to remove impurities in the water.

　　3. Ionity of polyacrylamide:

　　The ionicity of polyacrylamide is different, so the effect of treating sewage will be different. If polyacrylamide with lower ionicity was used in the past, in order to avoid waste when replacing polyacrylamide with high ionicity, we need to first Take part of the sewage to do a test, and start using it after finding a suitable amount.

　　4. Dissolution of polyacrylamide:

　　Whether polyacrylamide can be fully dissolved is also very important to the final effect. When choosing, we have to see if the dissolution speed of this polyacrylamide is fast enough.