摘要：在敞开式循环冷却水系统中，人们经常可以看到微生物大量生长的情景。其中控制冷却水系统中微生物生长有效和常用的方法之一是向冷却水系统中添加杀生剂。优良的冷却水杀生剂选择依据和优良杀生剂具备的条件。
关键字：敞开式循环冷却水；杀生剂；粘泥剥离剂；
在敞开式循环冷却水系统中，人们经常可以看到微生物大量生长的情景。例如在一些未经杀生灭藻处理的冷却水系统中，可以看到，在喷淋式蛇管换热器的一排排管子的表面和布水槽的侧壁上，布满了绿藻、蓝藻和灰色的微生物粘泥；在布水槽中的水面漂浮着许多藻块，槽底沉积着大量灰色的微生物黏泥；冷却塔下面的水池则暴露在阳光下，由于藻类的大量繁殖而形成了绿色的水面。
如上图冷却水系统就成了一些微生物的一个巨大的捕集器和培养器。在冷却水系统中引起故障的微生物、引起的金属腐蚀的微生物、微生物黏泥及其引起的故障等。面对这种情况，控制微生物生长是关键所在。
冷却水系统中微生物引起的腐蚀、黏泥及其生长的控制方法主要有：选用耐蚀材料；控制水质；采用杀生涂料；阴极保护；清洗；防止阳光照射；旁流过滤；混凝沉淀；噬菌体发；添加杀生剂；静电水处理与电子水处理。其中控制冷却水系统中微生物生长有效和常用的方法之一是向冷却水系统中添加杀生剂。优良的冷却水杀生剂选择依据为：
（1）选用的杀生剂能抑制冷却水中几乎所有能引起故障的微生物的活动；
（2）经济实用，人们往往将两种或两种以上的杀生剂复合使用，其中的一种是价格昂贵，但杀生剂效率高，用量较小；另一种则较为便宜，这样的复合使用能起到杀生范围很广的作用，价格也较为合理；
（3）如果冷却水系统中有木质构件，则建议使用非氧化性杀生剂；
（4）选用的杀生剂的排放是否能为当地环境保护部门所容许；
（5）是否适用于该冷却水系统的ph值、温度以及换热器的材质。
（6）杀生剂分为氧化性和非氧化性两大类。
其中清洗对于一个被微生物严重污染的冷却水系统来说，是十分有效的措施（如下图）。还可以使清洗后剩下来的微生物直接暴露在外，从而为杀生剂直接达到微生物表面并创造不利微生物生长的空间。混凝沉淀在补充水的前处理或循环冷却水的旁流处理过程中，使用铝盐、铁盐等混凝剂或高分子絮凝剂聚丙烯酰胺。配合杀生剂一起使用，是常用有效方法。
江苏中浩远达优良的杀生剂（又名粘泥剥离剂）具备以下条件：
（1）能有效地控制或杀生范围很广；
（2）在不同的冷却水的条件下，易于分解或被生物降解，理想的杀生剂应该是，一旦在冷却水系统中完成了杀生任务并被排放入环境中后，应该能被水解或生化处理而失去毒性；
（3）在游离活性氯存在时，具有抗氧化性，以保持其杀生灭藻效率不受损失；
（4）在使用浓度下，与冷却水中的一些缓蚀剂和阻垢剂能彼此相容；
（5）在冷却水系统运行的ph值范围内有效而不分解；
（6）在对付微生物黏泥时具有穿透黏泥的分散或剥离黏泥的能力。
产品英文详情介绍
abstract: in open recirculating cooling water system, people can often see a large number of scenarios microbial growth. one of the commonly used and effective control of microbial growth in cooling water systems is to add biocide to the cooling water system. excellent cooling water biocide based on the selection criteria and have excellent biocide. keywords: open recirculating cooling water; biocide; sludge remover; in open recirculating cooling water system, one can often see the scene of heavy growth of microorganisms. for example in some algae without killing birth and death process cooling water systems, it can be seen on a side wall surface of the tube rows of heat exchanger coils spray and cloth tank, covered with green algae, cyanobacteria and gray the microbial slime; cloth in water tank floating alginate many blocks, depositing a large number of gray bottom of microbial slime; pool below the cooling tower is exposed to the sun, since the algal blooms of water to form a green . fig cooling water system as described above has become a huge number of microorganisms and the trap incubator. microorganisms cause a malfunction in the cooling water system, a metal corrosion caused by microorganisms, and slime due to failure or the like. faced with this situation, the key is to control the growth of microorganisms. cooling water system corrosion caused by microorganisms, the growth of slime and a control method are: the selection of a corrosion resistant material; quality control; using biocidal coating; cathodic protection; cleaning; prevent sunlight; bypass filtration; coagulation sedimentation; phage hair; adding biocide; static electronic water treatment and water treatment. one of the commonly used and effective control of microbial growth in cooling water systems is to add biocide to the cooling water system. excellent cooling water biocide selected based on: (1) selection of biocides in cooling water can be suppressed almost all of the action of microorganisms can cause failure; (2) economic and practical, people often two or more composite biocide used, one of which is expensive, but highly efficient biocides, small amounts; another less expensive, the use of such complexes can play a wide range of biocidal effects, the price is reasonable; (3) if the cooling water systems wooden member, it is recommended to use a non-oxidizing biocide; (4) discharge of the biocide selected whether to allow the local environmental protection department; (5) applies to the ph value of the cooling water system, temperature, and the heat exchanger material. (6) is divided into an oxidizing and biocidal agent is a non-oxidizing two categories. wherein the cleaning heavily contaminated by microorganisms for a cooling water system, it is very effective measure (below). remaining microorganisms can also be directly exposed to the outside after the cleaning, such as a biocide directly to the surface of the microorganism and to create space for the growth of detrimental microorganisms. coagulation sedimentation process in the side stream of water added before or circulating cooling water treatment, the use of aluminum, iron or the like coagulant polyacrylamide polymer flocculant. used together with the biocide, an effective method is commonly used. jiang su zhonghao far superior biocides (also known as sludge remover) with the following conditions: (1) effective to control or kill a wide range; (2) under different conditions of the cooling water is easy to decompose or biodegradable, ideal biocide should be, once the task is completed the killing cooling water system and discharged into the environment, it must be hydrolyzed or lose biological treatment toxicity; (3) when the free active chlorine is present, having oxidation resistance, to maintain its efficiency to kill algae birth and death from loss; (4) the use concentration, and a number of corrosion inhibitor and scale inhibitor can be compatible with one another cooling water; (5) ph running cooling water system valid range of values 鈥嬧without decomposition; (6) having a dispersion or release of slime in slime ability to penetrate microbial slime dealing.
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