清洗剂概述

清洗剂

※清洗剂是能溶解RO系统内的CaCO₃、CaSO₄、SrSO₄等无机垢类，藻类、细菌、病毒等微生物及其代谢产物(粘泥)，铝、铁、锰等氧化物胶体，二氧化硅、硅酸盐胶体，粘土等颗粒物组成的污堵物，并恢复RO膜性能的化学药剂的总称。

※ 根据清洗剂的酸碱性，可分为酸性清洗剂、中性清洗剂、碱性清洗剂。根据效能，可分为常规清洗剂和配方清洗剂。常规清洗剂有柠檬酸、氢氧化钠、EDTA、磷酸三钠、三聚磷酸钠、十二烷基苯磺酸钠等。配方清洗剂则有多种成分配比而成，成分之间具有协调作用，因此比普通清洗剂有更好的清洗效果和恢复效果。

清鍊洗原理

※ RO膜系统的污堵物主要包括无机垢类、难溶盐类、胶体、微生物及其代谢产物、有机物、油脂等，由于RO多为卷式结构，其进水通道含一层隔网，不开放，因此大一些的污堵物一旦形成并堆积在RO进水隔网内，机械冲洗几乎无法将它们带出来。唯一的办法是将污堵物完全溶解，或者将污堵物转化成悬浊液，才能将其从RO膜元件内清洗出来。因此，清洗剂正好能够对症地溶解污堵物是关键，否则清洗效果很难预期。

※ 针对不同的垢类，有一些常见的清洗方案。比如CaCO₃、Mg(OH)₂、金属氧化物垢可采用酸洗;有机物、油脂、微生物等，可用碱洗;难溶盐类及普通方案清洗不佳时，可用配方药剂清洗。大量的现场清洗经验表明，RO系统的污堵物绝大多数情况下，成分不是单一的，因此单一的酸洗或碱洗很难取得最佳效果，往往需要酸洗、碱洗、再酸洗、再碱洗交替进行，才可能取得好的清洗效果。不过还有相当一部分系统，仅凭简单的酸洗、碱洗根本无法达到满意的效果，因为不同垢类互相包裹，难溶的垢类对其包裹的垢类有屏蔽保护作用，因此，简单的酸碱清洗不管用时，需采用配方药剂清洗。

※ 根据长期经验总结，我们认为影响膜清洗的因素有八个:时间、温度、流量、化学药剂、清洗用水、默特性、污染物层、操作人员。其中，尤其关键的因素是4个:时间、温度、清洗流量和化学药剂。温度决定药剂对污堵物的溶解速度;时间决定污堵物是否完全被洗掉;流量决定污堵物从RO膜面或隔网洗脱后，能不能充分冲洗出来;化学药剂决定污堵物能不能被溶解、洗脱下来以及是否与污堵物对症。

清洗剂应用的注意事项

※ 清洗之前，务必制定方案。制定清洗方案之前，务必对RO的污堵物加以确认。※ 清洗方案应遵循先易后难、先低温后高温、先低浓度后高浓度、先短时后延时的循序渐进的路线。※ 严重CaCO₃结垢的系统，清洗时，注意放气(CO₂)。

※ Fe、A1、Mn、Co等金属污染严重的系统，一旦这些成分被洗下来，应该及时放掉，避免RO膜遭到其催化降解破坏。

※ 不同的清洗步骡之间，应将系统冲洗干净，避免药品之间的负面反应。

Cleaning agent Overview

Cleaning agent

※ Cleaning agent is a general term of chemical agents that can dissolve inorganic scale such as CaCO₃, CaSO₄ and SrSO₄ in the RO system, microorganisms such as algae, bacteria and viruses and their metabolites (mud), oxide colloids such as aluminum, iron and manganese, silica, silicate colloids, clay and other particles in the fouling, and restore the properties of RO membranes.

※ According to the acid and alkali of the cleaning agent, it can be divided into acid cleaning agent, neutral cleaning agent and alkaline cleaning agent. According to the efficiency, it can be divided into conventional cleaning agent and formula cleaning agent. Conventional cleaning agents are citric acid, sodium hydroxide, EDTA, trisodium phosphate, sodium tripolyphosphate, sodium dodecyl benzene sulfonate and so on. The formula cleaning agent is composed of a variety of ingredients, and the components have a coordination effect, so it has better cleaning effect and recovery effect than ordinary cleaning agents.

Principle of purification and washing

※ The fouling of RO membrane system mainly includes inorganic scale, insoluble salts, colloids, microorganisms and their metabolites, organic matter, grease, etc. Because RO is mostly rolled structure, its inlet channel contains a layer of barrier network, which is not open, so once the larger fouling is formed and accumulated in the RO inlet barrier network, mechanical washing can hardly bring them out. The only way is to completely dissolve the fouling, or convert the fouling into a suspension, in order to clean it out of the RO membrane element. Therefore, the cleaning agent can just dissolve the pollution blockage is the key, otherwise the cleaning effect is difficult to expect.

※ There are some common cleaning solutions for different scale types. For example, CaCO₃, Mg(OH)₂, metal oxide scale can be acid-washed; Organic matter, oil, microorganism, etc., can be washed with alkali; When insoluble salts and ordinary solutions are not good, formulations can be used for cleaning. A large number of on-site cleaning experience shows that the pollution blockage of the RO system in most cases, the composition is not single, so a single pickling or alkali washing is difficult to achieve the best effect, often need to pickling, alkali washing, re-pickling, re-alkali washing alternately, can achieve good cleaning effect. However, there are a considerable number of systems, only by simple pickling, alkali washing simply can not achieve satisfactory results, because different scales wrap each other, insoluble scale on its wrapped scale has a shielding protection effect, therefore, simple acid and alkali cleaning regardless of the time, need to use formula chemical cleaning.

※ According to long-term experience, we believe that there are eight factors affecting membrane cleaning: time, temperature, flow rate, chemical agents, cleaning water, thermal characteristics, pollutant layer, and operator. Among them, four factors are particularly critical: time, temperature, cleaning flow and chemical agents. The temperature determines the dissolution rate of the agent. Time determines whether the fouling is completely removed; The flow rate determines whether the fouling can be rinsed out fully after elution from the RO membrane or spacer. Chemicals determine whether the blockage can be dissolved, eluted, and treated properly.

Precautions for cleaning agent application

※ Before cleaning, be sure to make a plan. Before making a cleaning plan, be sure to confirm the RO fouling. ※ The cleaning program should follow the gradual route of easy and difficult, low temperature and high temperature, low concentration and high concentration, short time and delay. ※ For systems with severe CaCO₃ scaling, pay attention to venting (CO₂) when cleaning.

※ Fe, A1, Mn, Co and other metal pollution systems, once these components are washed down, should be promptly discharged to avoid the RO membrane by its catalytic degradation damage.

※ Between different cleaning steps, the system should be washed clean to avoid negative reactions between drugs.

高性能酸性清洗剂TYCK-EPCQ70821

产品介绍

※ 可与食品级加工设备接触。

※ 适用于反渗透(RO)、纳滤(NF)和微滤(MF)膜

※ 用于去除膜表面无机和非金属氧化污染物。

※ 强力释放膜表面污染物且不损伤膜表面，易于从膜表面冲洗干净。

※ 分散性液体，易于水溶液混合，减少处理强度和清洗时间。

性能参数

※ 外观:无色或浅黄色液体

※ 溶解度(20℃):完全溶于水

※密度(g/cm3.20℃):1.10-1.30

※PH值(2%水溶液):1.65-2.65

使用说明

※ 在典型的膜清洗应用中，TYCK-EPCQ70821膜清洗剂的使用量为3%-4%，根据需要或专业清洗专家的建议进行循环清洗。本产品初次使用信息和安全防护事项，请参见TYCKOSON提供的材料安全表格或产品标签说明。

般清洗步骤

※ 检查清洗水箱及连接管路，并用RO透过水清洗干净。

※ 检查并调换新的清洗保安过滤芯

※连接好清洗系统，如有必要把产水也连接至清洗水箱。

※用RO透过水装入清洗水箱，让水箱内水量保持能循环的最小水量。※用RO透过水或除盐水注入清洗水箱至适当量，缓慢注入计算的加药量，用清洗泵循环混合溶液，并调整清洗液PH值在2.5-3.5之间。

※ 控制清洗液的温度，尽量提高清洗温度，并参考RO膜制造商提供的技术数据。

※ 以进水方向循环清洗30分钟(清洗流速应按照膜制造商或系统供应商的推荐值)，浸泡30分钟，然后循环1小时，如有必要可以重复以上步骤几次或浸泡1晚上。※ 每隔30分钟检查清洗液的PH和温度并记录。

※ 如果需要，浸泡的时间可以延长为5-6小时或更长，PH值大于4应考虑添加清洗液。※ 清洗结束，把接入水箱的回水管直接处于排水沟状态，把系统内的清洗液排放，并用RO透过水冲洗系统至PH接近RO透过水为止。

High performance acid cleaning agent TYCK-EPCQ70821

Product introduction

※ Can be in contact with food grade processing equipment.

※ Suitable for reverse osmosis (RO), nanofiltration (NF) and microfiltration (MF) membranes

※ Used to remove inorganic and non-metallic oxidation pollutants from the surface of the film.

※ Strong release of membrane surface pollutants and do not damage the membrane surface, easy to wash from the membrane surface.

※ Dispersible liquid, easy to mix aqueous solution, reduce processing strength and cleaning time.

Performance parameter

※ Appearance: Colorless or light yellow liquid

※ Solubility (20℃): completely soluble in water

※ Density (g/cm3.20℃):1.10-1.30

※PH value (2% aqueous solution):1.65-2.65

Instructions for use

※ In typical membrane cleaning applications, the use of TYCK-EPCQ70821 membrane cleaning agent is 3%-4%, and the cycle cleaning is performed as required or as recommended by professional cleaning experts. For first use information and safety precautions, please refer to the Material safety form or product label instructions provided by TYCKOSON.

General cleaning procedure

※ Check the cleaning water tank and connecting pipes, and clean them with RO through water.

※ Check and replace the new cleaning filter element

※ Connect the cleaning system, and connect the production water to the cleaning tank if necessary.

※ Fill the cleaning tank with RO through water to keep the minimum amount of water in the tank that can be circulated. ※ Use RO to inject the cleaning tank through water or debrine to the appropriate amount, slowly inject the calculated dosage, circulate the mixing solution with the cleaning pump, and adjust the PH value of the cleaning solution between 2.5-3.5.

※ Control the temperature of the cleaning solution, maximize the cleaning temperature, and refer to the technical data provided by the RO membrane manufacturer.

※ Cycle cleaning in the direction of water for 30 minutes (the cleaning flow rate should be in accordance with the recommended value of the membrane manufacturer or system supplier), soak for 30 minutes, and then cycle for 1 hour, if necessary, you can repeat the above steps several times or soak for 1 night. ※ Check the PH and temperature of the cleaning solution every 30 minutes and record.

※ If necessary, the soaking time can be extended to 5-6 hours or more, and the PH value is greater than 4 should be considered to add cleaning solution. ※ After cleaning, put the return pipe connected to the water tank directly in the gutter, discharge the cleaning solution in the system, and flush the system with RO through water until the PH is close to RO through water.

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