污泥脫水沉淀劑的使用技巧 聚丙烯酰胺陰離子和陽離子的選配方法
2020年后復(fù)工開始后 各個企業(yè)陸續(xù)開始生產(chǎn) 很多洗沙廠 污水廠 食品廠也開始慢慢進(jìn)入滿負(fù)荷生產(chǎn) 因為長時間的停產(chǎn)導(dǎo)致很多廠里的污水存儲時間太長 污泥精鋼自然沉淀自然成降到底部 時間久了變得非常堅固 用污泥泵都不能抽出來 奇葩的事情比比皆是 廣西金總就是一個很好的例子 2018年采購了帶式壓濾機 從江蘇采購的 設(shè)備不能使用 使用聚丙烯酰胺處理污水效果很很好 上機就是不行 因為污
泥上不了壓濾機上 沉淀后不能抽上了 污水池里攪拌扇葉太小 加進(jìn)去藥劑 不能重復(fù)反應(yīng) 金總百感交集 試了又試 買了我家的聚丙烯酰胺陰離子 聚丙烯酰胺陽離子 聚合氯化鋁都試了 藥劑真好 機器不行啊 2019年金總又花錢買了個板式壓濾機 還是某某品牌 廣告很多 設(shè)備安裝在了 高于沉淀池2米的的地方 還是出現(xiàn)這個問題 污泥抽不上去 不用藥劑自然沉淀 時間太久用裝載機吧務(wù)你挖出了 金總就是不選擇藥劑 壓濾機濾布每個月?lián)Q兩次 一次1000多塊 就是不用陰離道治理用的除磷劑是對城市水源水混凝除濁處理及除磷的物品?？梢栽趯Τ鞘兴此炷凉崽幚硗瑫r，到達(dá)深度除磷意圖。
從而將處理后飲用水中的磷含量降至界限值以下，不需要改動原水處理流程，不需要增設(shè)大型水處理構(gòu)筑物，簡便易行，經(jīng)濟(jì)實用，可獲得顯著的社會和經(jīng)濟(jì)效益。
河道治理用的除磷劑運用方法量投加不會造成不良影響的，畢竟鐵也是微生物生長所需要的微量元素。但是如果投加量過大，則會使污泥活性收到影響，還有疑問可以到環(huán)保.通交流。
生化末端 沒有影響，何況少量的鐵鹽能夠?qū)hosphorus removal agent for road treatment is a kind of material for coagulation and turbidity removal of urban water source and phosphorus removal. It can reach the intent of deep dephosphorization at the same time of coagulation and turbidity removal of urban water source.
Thus, the phosphorus content in treated drinking water can be reduced to below the threshold value, without changing the original water treatment process, without adding large water treatment structures, which is simple, economical and practical, and can achieve remarkable social and economic benefits.
The amount of phosphorus removal agent used in river regulation will not cause adverse effects. After all, iron is also a trace element needed for microbial growth. However, if the dosage is too large, the sludge activity will be affected. There are still doubts about environmental protection and communication.
There is no effect on the biochemical end, let alone a small amount of iron salts.
懸浮物上漂
1、操作不當(dāng)，有的是不專業(yè)的人員在實驗中運用了不當(dāng)手法，加入聚合氯化鋁后，攪拌過急過慢都不行，初次實驗，要有專業(yè)的水處理師從旁協(xié)助，這是很重要的一點。
2、加聚合硫酸鐵的量沒有控制好，（加藥過多或過少）這種情況，最容易出現(xiàn)懸浮物上漂。
使用前，將本產(chǎn)品按一定濃度（10-30%）投入溶礬池，注入自來水?dāng)嚢枋怪浞炙?，靜置至呈紅棕色液體，再兌水稀釋到所需濃度投加混凝。水廠亦可配成2-5%直接投加，工業(yè)廢水處理直接配 成5-10%投加。 b、投加量的確定，根據(jù)原水性質(zhì)可通過生產(chǎn)調(diào)試或燒杯實驗視礬花形成適量而定，制水廠可以原用的其它藥劑量作為參考，在同等條件下本產(chǎn)品與固體聚合氯化鋁用量大體相當(dāng)，是固體硫酸鋁用量的 1/3-1/4。如果原用的是液體產(chǎn)品，可根據(jù)相應(yīng)藥劑濃度計算酌定。大致按重量比1:3而定。
關(guān)于污水處理使用聚合硫酸鐵上水層出現(xiàn)漂浮物的原因以及解決方法
污水處理1. Improper operation, some non-professional personnel in the experiment used improper techniques, adding polyaluminium chloride, stirring too fast or too slow can not, the first experiment, there must be professional
water treatment assistant, this is a very important point.
2. The amount of polyferric sulfate added is not well controlled (too much or too little dosage). In this case, suspended solids are most likely to float.
Before use, the product was put into the alum bath at a certain concentration (10-30%) and stirred with tap water to make it fully hydrolyzed. The product was put into a red-brown liquid and diluted with water until the required concentration was added and coagulated. Waterworks can also be added 2-5% directly, and industrial wastewater treatment can be added 5-10%. B. The determination of dosage depends on the proper amount of alum bed by production debugging or beaker experiment according to the nature of raw water. The other dosage used in water plant can be used as reference. Under the same conditions, the dosage of this product is approximaby equal to that of solid polyaluminium chloride, which is 1/3-1/4 of that of solid aluminium sulfate. If the original liquid product is used, it can be calculated according to the concentration of the corresponding agent. It depends roughly on the weight ratio of 1:3.
Reasons and Solutions for Floating Matter in the Upper Water Layer of Polyferric Sulfate Used in Sewage Treatment
3、加聚合硫酸鐵的量對了，但是廢水的PH值不對，沒有在相應(yīng)藥劑使用PH范圍。適應(yīng)水體PH值范圍寬為4PH值范圍為6-9，凈化后原水的PH值與總堿度變化幅度小
4、使用凈水產(chǎn)品的型號不對，根據(jù)污水的特點，選擇適合自己污水特征的凈水劑，如：聚合氯化鋁、聚氯化鋁、聚合氯化鋁鐵、氯化鋁、噴霧式聚合氯化鋁、白色聚合氯化鋁等等，聽從專業(yè)水處理師的指導(dǎo)意見，他們給的意見都是專業(yè)性的。
關(guān)于污水處理使用聚合硫酸鐵上水層出現(xiàn)漂浮物的原因以及解決方法
聚合硫酸鐵
5、最后一點要考慮的就是，你所使用的聚合硫酸鐵，質(zhì)量是否達(dá)標(biāo)，聚合硫酸鐵的各項指標(biāo)是準(zhǔn)。
現(xiàn)在市面上聚合硫酸鐵的質(zhì)量參差不齊，相對于質(zhì)量好一些的聚合硫酸鐵在使用過程中，出現(xiàn)懸浮物的幾率會很低的，好一些的聚合硫酸鐵幾乎是沒有水不溶物的，所以產(chǎn)品質(zhì)量也是非常重要。微生物活性有促進(jìn)作用，就是出水色度有影響
將化學(xué)除磷劑投加于生化池的后面，這樣便可以完全避免水中多種物質(zhì)與除磷劑發(fā)生反應(yīng),消耗藥劑用量.且不會降低生化池的進(jìn)水有機碳濃度，影響微生物的脫氮除磷效果。同時還可避免過多投加除磷劑，也會使殘余的藥劑進(jìn)入生化系統(tǒng)中，對微生物生長造成影響。
將除磷絮凝劑投加于好氧池的出水口端，二沉池的前面投加除磷劑則可以大量減少除磷藥劑的使用量，這是廢水在生化處理的過程中已去除水中大部分磷，并將偏磷、有機磷轉(zhuǎn)化為可通過混凝處理的正磷，大大提高除磷效果和減少除磷劑投加量，減少污泥產(chǎn)量、減少污泥中的磷含量。 所以，化學(xué)除磷藥劑一般投加于生化后，二沉池前，節(jié)省廢水除磷成本和提高達(dá)標(biāo)率。?
運用時可將本產(chǎn)品直接投加，或先參加溶解罐，濃度為10～20%，拌和，用泵投加到反響池。本產(chǎn)品適用的pH值規(guī)模廣，在酸性條件下運用效果尤佳，運用量約為100～1000ppm（即0.1～1公斤/噸廢水），依據(jù)廢水中磷酸根的含量不同其用量有所差異，詳細(xì)用量一般通過試驗斷定。
試驗時取一定量的原水，參加適量的本產(chǎn)品（如500ppm），將廢水pH值調(diào)節(jié)至7～8，www.hnldscl.com參加少數(shù)聚丙烯酰胺PAM絮凝沉積，過濾取上清液測定磷的含量。（如需處理重金屬，用上清液進(jìn)行二次處理即可。）AC/PAM與除磷劑攪拌后的反應(yīng)？使用時可將本產(chǎn)品直接投加，或先參加溶解罐，濃度為10～20%，拌和，用泵投加到反響池。本產(chǎn)品適用的pH值規(guī)模廣，在酸性條件下使用作用尤佳，使用量約為100～1000ppm（即0.1～1公斤/噸廢水），依據(jù)廢水中磷酸根的含量不同其用量有所差異，具體用量一般經(jīng)過試驗斷定。The amount of polyferric sulfate added is right, but the PH value of wastewater is not right, and there is no optimum range of PH used in the corresponding reagents. The suitable range of PH value is 4-11, and the optimum range of PH value is 6-9. After purification, the change range of PH value and total alkalinity of raw water is small.
4, the type of water purification products is not correct. According to the characteristics of sewage, choose suitable water purifying agent suitable for its own sewage characteristics, such as polyaluminum chloride, polyaluminum chloride, polyaluminum ferric chloride, aluminum chloride, spray polyaluminum chloride, white polyaluminium chloride, etc., and listen to the advice of professional water treatment division, and give their advice. They are all professional.
Reasons and Solutions for Floating Matter in the Upper Water Layer of Polyferric Sulfate Used in Sewage Treatment
Polyferric sulfate
5. The last point to consider is whether the quality of the polyferric sulfate you use meets the national standards, and whether the various indicators of the polyferric sulfate meet the national standards.
At present, the quality of polyferric sulfate is uneven in the market. Compared with the better quality of Polyferric sulfate, the probability of suspended solids will be very low. The better polyferric sulfate has almost no water insoluble solids, so the quality of products is also very important. Microbial activity has a promotive effect, that is, effluent color has an impact.
Adding chemical Dephosphorizer to the back of biochemical pond can compleby avoid the reb between various substances in water and dephosphorizer, consume the amount of reagent, and will not reduce the concentration of organic carbon in the influent of biochemical pond, affecting the effect of nitrogen and phosphorus removal by microorganisms. At the same time, it can avoid excessive dosage of phosphorus removal agents, and also make the residual agents into the biochemical system, which will affect the growth of microorganisms.
Adding phosphorus removal flocculant to the outlet of aerobic tank and phosphorus removal agent in front of secondary sedimentation tank can greatly reduce the use of phosphorus removal agent. This is because most phosphorus in wastewater has been removed in the process of biochemical treatment, and phosphorus migration and organic phosphorus are converted into positive phosphorus which can be treated by coagulation, which greatly improves the effect of phosphorus removal and improves the efficiency of phosphorus removal. Reduce the dosage of phosphorus removal agent, reduce sludge production, reduce phosphorus content in sludge. Therefore, chemical phosphorus removal agents are generally added to the biochemical process, before the secondary sedimentation tank, to save the cost of phosphorus removal from wastewater and improve the rate of reaching the standard. ?
When in use, the product can be directly added or participated in the dissolving tank, the concentration of which is 10-20%, mixed and pumped into the reb tank. The product is suitable for a wide range of pH values, especially in acidic conditions. Its application amount is about 100-1000 ppm (i.e. 0.1-1 kg/ton wastewater). According to the different content of phosphate in wastewater, its dosage is different. The detailed dosage is generally determined by experiments.
During the experiment, a certain amount of raw water was taken and the product (such as 500 ppm) was added. The pH value of the wastewater was adjusted to 7-8. www.hnldscl.com participated in the flocculation and deb of a few PAM. The supernatant was filtered to determine the phosphorus content. (If heavy bls need to be treated, the supernatant can be used for secondary treatment.) Reb of AC/PAM with phosphorus removal agent after stirring? When in use, the product can be directly added or participated in the dissolving tank at the concentration of 10-20%. The product can be mixed and pumped into the reb tank. The product is suitable for a wide range of pH values, especially in acidic conditions. Its usage is about 100-1000ppm (i.e. 0.1-1 kg/ton wastewater). According to the content of phosphate in wastewater, its dosage is different. The specific dosage is generally determined by experiments.
試驗時取一定量的原水，參加適量的本產(chǎn)品（如500ppm），將廢水pH值調(diào)理至7～8，參加少數(shù)聚丙烯酰胺PAM絮凝沉積，過濾取上清液測定磷的含量。（如需處理重金屬，用上清液進(jìn)行二次處理即可。） FeCl3、及 AlCl3溶液充沛混合均勻后參加NaOH溶液，三者摩爾比為3∶2∶14；混合反響并靜置后濾出生成物，用水重復(fù)洗刷至出水為中性；于100-110℃下烘干并制成尺度均勻的粒狀吸附劑。
該吸附劑的使用，在慣例水處理工藝中增設(shè)吸附除磷工藝，吸附除磷工藝由2-4個串聯(lián)運轉(zhuǎn)的除磷吸附池組成，除磷吸附池結(jié)構(gòu)同濾池，用粒狀復(fù)合鐵鋁除磷吸附劑作濾料，粒徑規(guī)模0.5mm-0.8mm，吸附層厚度為1.0-1.5m，吸附池水力負(fù)荷5m/h-8m/h，空床觸摸時刻30-40min。該吸附劑除磷適用規(guī)模廣；除污染效能優(yōu)異，再生簡略，質(zhì)料價格低，易得安全。
PAC/PAM與除磷劑制備辦法
FeCl3及 AlCl3溶液充沛混合均勻后參加NaOH溶液，三者摩爾比為3∶2∶14；混合反響并靜置后濾出生成w物，用水重復(fù)洗刷至出水為中性；于100-110℃下烘干并制成尺度均勻的粒狀吸附劑。
該吸附劑的使用，在慣例水處理工藝中增設(shè)吸附除磷工藝，吸附除磷工藝由2-4個串聯(lián)運轉(zhuǎn)的除磷吸附池組成，除磷吸附池結(jié)構(gòu)同濾池，用粒狀復(fù)合鐵鋁除磷吸附劑作濾料，粒徑規(guī)模0.5mm-0.8mm，吸附層厚度為1.0-1.5m，吸附池水力負(fù)荷5m/h-8m/h，空床觸摸時刻30-40min。該吸附劑除磷適用規(guī)模廣；除污染效能優(yōu)異，再生簡略，質(zhì)料價格低，易得安In the experiment, a certain amount of raw water was taken and the product (e.g. 500 ppm) was participated in. The pH value of wastewater was adjusted to 7-8. A few PAM flocculating deposits were participated in. The content of phosphorus in the supernatant was determined by filtration. (If heavy bls need to be treated, the supernatant can be used for secondary treatment.) FeCl3, AlCl3 and AlCl3 solutions were mixed in NaOH solution with a molar ratio of 3:2:14; the product was filtered after mixing reb and standing, and washed repeatedly with water until the effluent was neutral; the granular adsorbent was dried at 100-110 ~C and made into unib size.
The adsorbent is used to remove phosphorus by adsorption in conventional water treatment process. The adsorbent consists of 2-4 series operation phosphorus removal adsorbents. The structure of the adsorbent is the same as that of the filter. The particle size of the adsorbent is 0.5mm-0.8mm, the thickness of the adsorbent layer is 1.0-1.5m, and the hydraulic force of the adsorbent is negative. Load 5 m/h-8 m/h, empty bed touching time 30-40 min. The adsorbent has wide application scale for phosphorus removal, excellent pollution removal efficiency, simple regeneration, low material price and easy to obtain safety.
Preparation of PAC/PAM and Phosphorus Removal Agent
FeCl3 and AlCl3 solutions were mixed in NaOH solution with a molar ratio of 3:2:14. After mixing and standing, W was filtered and washed repeatedly with water until the effluent was neutral. The granular adsorbent was dried at 100-110 C and made into unib size.
The adsorbent is used to remove phosphorus by adsorption in conventional water treatment process. The adsorbent consists of 2-4 series operation phosphorus removal adsorbents. The structure of the adsorbent is the same as that of the filter. The particle size of the adsorbent is 0.5mm-0.8mm, the thickness of the adsorbent layer is 1.0-1.5m, and the hydraulic force of the adsorbent is negative. Load 5 m/h-8 m/h, empty bed touching time 30-40 min. The adsorbent is suitable for phosphorus removal on a wide scale, with excellent pollution removal efficiency, simple regeneration, low material price and easy access to safety.
FeCl3、及 AlCl3溶液充分混合均勻后參加NaOH溶液，三者摩爾比為3∶2∶14；混合反響并靜置后濾出生成物，用水反復(fù)洗刷至出水為中性；于100-110℃下烘干并制成尺度均勻的粒狀吸附劑。該吸附劑的使用，在常規(guī)水處理工藝中增設(shè)吸附除磷工藝，吸附除磷工藝由2-4個串聯(lián)運轉(zhuǎn)的除磷吸附池組成，除磷吸附池結(jié)構(gòu)同濾池，用粒狀復(fù)合鐵鋁除磷吸附劑作濾料，粒徑規(guī)模0.5mm-0.8mm，吸附層厚度為1.0-1.5m，吸附池水力負(fù)荷5m/h-8m/h，空床觸摸時間30-40min。該吸附劑除磷適用規(guī)模廣；除污染效能優(yōu)異，再生簡單，質(zhì)料價格低，易得安全。
河道治理用的除磷劑適用規(guī)模
1、用于生活污水處理廠除磷，特別是合適中磷段污水處理；
2、合適于含外表處理工藝的工業(yè)廢水；
3、用于食品廠廢水；
4、用于制藥、造紙、農(nóng)藥、化肥廠的廢水處理。
5、用于廢物填埋廠廢物滲濾液處理。After fully mixing and homogenizing AlCl3 solution, NaOH solution was added with a molar ratio of 3:2:14; the product was filtered after mixing and standing, and washed repeatedly with water until the effluent was neutral; the granular adsorbent was dried at 100-110 (?) C and made into unib size. The adsorbent is used to remove phosphorus by adsorption in conventional water treatment process. The adsorbent consists of 2-4 series operation phosphorus removal adsorbents. The structure of the adsorbent is the same as that of the filter. The particle size of the adsorbent is 0.5mm-0.8mm, the thickness of the adsorbent layer is 1.0-1.5m, and the hydraulic force of the adsorbent is negative. Load 5 m/h-8 m/h, empty bed touch time 30-40 min. The adsorbent has wide application scale for phosphorus removal, excellent pollution removal efficiency, simple regeneration, low material price and easy safety.
Application Scale of Phosphorus Removal Agents for River Regulation
1. It is used for phosphorus removal in domestic sewage treatment plants, especially for medium phosphorus section sewage treatment.
2. Suitable for industrial wastewater containing surface treatment process.
3. Wastewater from food factories;
4. Wastewater treatment in pharmaceutical, papermaking, pesticide and fertilizer plants.
5. Waste leachate treatment in waste landfill plants.
子聚丙烯酰胺 這就是經(jīng)驗啊 設(shè)備安裝出現(xiàn)問題 設(shè)備白買了 洗沙專用聚丙烯酰胺因為其具有極性基因—酰胺基，于借其氫健的效果在泥沙顆粒表面吸附。
2、洗沙專用聚丙烯酰胺因其有很長的分子鏈，大數(shù)量級的長鏈在水中有無窮的吸附表面積，故絮凝效果好，能使用長鏈在顆粒之間架橋，構(gòu)成大顆粒的絮凝體，加快沉降。
3、借助于聚丙烯酰胺的絮凝、助凝，清水處置的pH值是水處理水平的關(guān)鍵值。對于各種類型污水的處理和調(diào)整，pH值也是必不可少的。目前，工業(yè)廢水還分為兩種加工方式：酸和弱堿。 這種受水污染的廢水由于其酸和堿性質(zhì)而具有很強的腐蝕性，并且干擾了加工技術(shù)，這會影響水質(zhì)。因此，近年來，人們經(jīng)常使用物理化學(xué)方法來連續(xù)處理和調(diào)節(jié)水的pH值。它主要用化學(xué)添加劑處理。使用理化附聚氯化鋁處理酸堿水污染廢水：聚集氯化鋁適用于酸度和堿度界限極，因此近年來工業(yè)化已被用作酸堿廢水處理的調(diào)節(jié)劑PH value is the key value of water treatment level. For the treatment and adjustment of various types of wastewater, the pH value is also essential. At present, industrial wastewater is also divided into two processing bs: acid and weak alkali. The wastewater polluted by water has strong corrosiveness because of its acidity and alkalinity, and interferes with the processing technology, which will affect the water qu很多人不清楚高純聚合氯化鋁對人體健康是否有危害，以及危害性，這里可以為您提供此問題，并詳細(xì)介紹高純聚合氯化鋁和身體接觸是否有危害。
高純聚合氯化鋁的腐蝕性、強刺激性較強，容易對人體皮膚，粘膜產(chǎn)生刺激，如果長期接觸的話會頭暈，頭疼，食欲不振，胸悶。
另外如果平時吸入大量的高純聚氯化鋁會和支氣管，如果不小心吸入高純聚氯化鋁后，應(yīng)該快速離開到空氣清新處，如果出現(xiàn)呼吸困難的話必須輸氧，進(jìn)行人工呼吸就醫(yī)。
如果誤服大量高純聚氯化鋁會引起人體口腔潰爛，胃炎，胃部出血，胃粘膜壞死，一旦不小心誤食后應(yīng)該馬上用清水漱口，或者服用牛奶或蛋清后馬上就醫(yī)。
ality. Therefore, in recent years, people often use physical and chemical bs to continuously treat and adjust the pH value of water saving. It is mainly treated with chemical additives. Physicochemical agglomerated polyaluminium chloride is used to treat acid-alkali wastewater. The agglomerated aluminium chloride is suitable for the extreme limit of acidity and alkalinity. Therefore, industrialization has been used as a regulator for acid-alkali wastewater treatment in recent years.
Polychloride is mainly due to the acidity and alkalinity of water, it has strong adhesion and dehydration characteristics. It has high removal rate of sewage components and is suitable for clean water, which is favored by customers. The advantages of physicochemistry and ant effect is particularly obvious. With the gradual maturity of acid-alkali wastewater treatment technology, there are many processing technologies, and now acid-alkali wastewater has also been treated.。
主要是聚氯化物由于水體的酸度和堿度，它具有很強的附著力和脫水特性。它對污水成分的去除率高，適用于潔凈水，深受客戶青睞。 加工酸化廢水的物理化學(xué)和團(tuán)聚氯化鋁工藝的優(yōu)勢：相對酸性的水污染廢水的處理需要根據(jù)酸水平測量聚集的氯化鋁濃度，而堿性廢水的處理相對容易因為在弱堿條件下，可以充分發(fā)揮聚氯化鋁的作用，使清水中的污染物迅速凝結(jié)沉淀，不需要添加額外的助劑，酸性水污染廢水需要添加中和劑以加強處理。目前，與許多處理工藝相比，使用物理化學(xué)聚氯化鋁的選擇相對較好，處理效果尤為明顯。隨著酸堿廢水處理技術(shù)的逐步成熟，加工技術(shù)有很多，現(xiàn)在酸堿廢水也已被處理掉。
泥凝過程中可能發(fā)生雙電離緊縮，使顆粒集合穩(wěn)定性下降，分子引力效果下顆粒結(jié)合起來，分散相的簡單陰離子可以被聚合物陰離子基團(tuán)所替代。
4、洗沙專用聚丙烯酰胺高分子和天然水方法所得出的分類是不一樣的，假如依照離子型可分為陰、非、兩性及陽離子聚丙烯酰胺，假如依照形狀的話，能夠分為膠體、渙散液、乳液和干粉顆粒四種形狀，那么這四種形狀哪一種更適合我們呢？公司給您一些主張，接下來是我們的經(jīng)歷所得，希望您會感興趣。
??在平常假如我們常常運用，能夠選擇干粉顆粒狀聚丙烯酰胺，The classification obtained by the b is different. If the ionic type can be divided into Yin, non, amphoteric and cationic polyacrylamide, if according to the shape, it can be divided into four shapes: colloid, laxity, emulsion and dry powder. Which of these four bs is more suitable for us? The company gives you some suggestions. Next is our experience. I hope you will be interested.
In general, if we often use it, we can choose dry powder granular polyacrylamide. Because of its highest solid content, dry powder polyacrylamide is generally stored in dry and cool places for more than two years, but if mixed with solution, its storage time will be limited. Generally speaking, when the concentration of solution is 0.1%, non-ionic and anionic polyacrylamide will dissolve. The stability of cationic polyacrylamide solution depends on the concentration of the solution. For example, the more concentrated the solution is, the longer the storage time of 3%-5% solution is, but the 3%-5% solution can not be directly used to treat sewage. This solution needs to be diluted before use, and the PH value of cationic polyacrylamide solution is less than 5.5. Stability, if greater than 6.0, will be due to hydrolysis and failure, water medium dispersion polyacrylamide shelf life of six months.
Therefore, polyacrylamide is still a better choice of solids, can be used with the mix, do not cause waste.
Of course, we must pay attention to the conditions and taboos of preserving polyacrylamide. Polyacrylamide is more sensitive to iron ions, calcium ions and magnesium ions than anionic polymers. In particular, iron ions are catalysts for the chemical degradation of all polyacrylamide. Therefore, in the manufacture, handling and storage of polyacrylamide solutions, we must try to avoid iron ions entering and touching the solution. The equipment should be made of plastics, stainless steel, FRP or carbon steel with surface coating resin.由于它的固含一般情況下干粉聚丙烯酰胺在干燥、陰涼的當(dāng)?shù)厥羌拇娑暌陨系?，但假如配成溶液的話，它的寄存時刻就有限了，一般說，溶液濃度為0.1%的時候，非離子與陰離子聚丙烯酰胺溶液不會超過一周的時刻，陽離子聚丙烯酰胺溶液則不會超過一天，而且溶液的穩(wěn)定性與溶液的濃度有關(guān)，配的濃度越濃，例如3%——5%的溶液寄存時刻越長，但3%——5%的溶液不能直接去處理污水，這種在運用前需要稀釋，陽離子聚丙烯酰胺溶液PH值小于5.5的時后比較穩(wěn)定，假如大于6.0的話，就會由于水解的原因而失效，水介質(zhì)渙散型聚丙烯酰胺保質(zhì)期為六個月。
??所以聚丙烯酰胺仍是選用固體的比較好，能夠做到隨配隨用，不造成糟蹋。
??當(dāng)然大家一定要注意保存聚丙烯酰胺各種條件和忌諱，聚丙烯酰胺對鐵離子、鈣離子、鎂離子比陰離子聚合物質(zhì)靈敏，尤其是鐵離子是造成所有聚丙烯酰胺化學(xué)降解的催化劑，所以在制造、搬運與儲存聚丙烯酰胺溶液的話，一定要盡量避免鐵離子進(jìn)入與溶液觸摸設(shè)備要用塑料、不銹鋼、玻璃鋼或表面涂料樹脂的碳鋼制造。
構(gòu)成中的物質(zhì)和水中懸浮物，或在之前投加的水解混凝劑的離子之間發(fā)生化學(xué)相互效果，可能是絡(luò)合反響。
5、聚丙烯酰胺因為分子鏈固定在不一樣顆粒的表面上，各個固相顆粒之間構(gòu)成聚合
