ROGRAMME FOR REAGENT TREATMENT OF AMMONIA AND UREA WASTEWATER TREATMENT AT JSC "SHEKINOAZOT".
ROGRAMME用于JSC“SHEKINOAZOT”的氨和尿素废水处理的试剂处理。

The purpose of stabilisation treatment of circulating water:
循环水稳定处理的目的：

-securing the value of total microbial count (TMC) - not more than 104 CFU/cm3;
-确保总微生物计数 （TMC） 的值 - 不超过 104 CFU/cm3;

- ensuring corrosion rate of equipment made of carbon steel - not more than 0.1 mm/year, alloy steels - not more than 0.01 mm/year;
- 确保碳钢设备的腐蚀速率 - 不超过 0.1 毫米/年，合金钢 - 不超过 0.01 毫米/年;

- absence of deposits, including mould, slime, algae on the metal structures of cooling towers and on the surfaces of water-cooled heat-exchange equipment.
- 冷却塔的金属结构和水冷热交换设备表面没有沉积物，包括霉菌、粘液、藻类。

PROGRAMME FOR STABILISATION TREATMENT OF WATER FROM EQUIPMENT COOLING SYSTEMS
设备冷却系统水的稳定处理方案

A brief technical characterisation of the ammonia and urea WWTP facilities is given in Table 1.
氨和尿素污水处理厂设施的简要技术特征见表1。

Characterisation of ammonia and urea WPC facilities
氨和尿素WPC设施的表征

2.1 Stabilisation treatment
2.1 稳定处理

To ensure protection of equipment and pipelines of circulating cooling cycles from corrosion processes and scale formation, we suggest stabilisation treatment of circulating water with corrosion and scale formation inhibitor ATE 31130a.
为确保循环冷却循环的设备和管道免受腐蚀过程和水垢形成的影响，我们建议使用腐蚀和水垢形成抑制剂ATE 31130a对循环水进行稳定处理。

The reagent ATE 31130a is a complex inhibitor of corrosion and scale formation on the basis of phosphonates and dispersants, which prevents scaling and corrosion processes in circulating cooling systems.
试剂 ATE 31130a 是一种基于膦酸盐和分散剂的复合缓蚀剂，可防止循环冷却系统中的结垢和腐蚀过程。

Initial dosage of ATE 31130a for saturation of cooling system 20 g/m3 of the total volume of water in the cooling system, further dosing is made at the rate of 7 g/m3 of make-up water flow rate by the dosing pump into the circulating water.
ATE 31130a的初始剂量为冷却系统饱和度20 g/m3冷却系统中总水量的20 g/m3，进一步加药以7 g/m3的补充水流速通过计量泵进入循环水。

The dosing point of ATE 31130a reagent is the pressure pipeline of water supply to the equipment.
ATE 31130a试剂的加药点是设备供水的压力管道。

Control of ATE 31130a reagent consumption is performed by phosphonates concentration in cooling water.
ATE 31130a试剂消耗量的控制是通过冷却水中的膦酸盐浓度来进行的。

2.2 Biocidal treatment of circulating water
2.2 循环水的生物杀灭处理

To prevent the development of microbiology throughout the year, we recommend biocidal treatment of cooling water with reagents ATE 36348a, ATE 36349a.
为了防止全年微生物学的发展，我们建议使用试剂ATE 36348a，ATE 36349a对冷却水进行生物杀灭处理。

Biocides ATE 36348a, ATE 36349a are administered by the shock method, by a single addition of the calculated amount of biocide.
杀菌剂ATE 36348a、ATE 36349a通过电击法施用，通过单次加入计算出的杀菌剂量。

In order to ensure the standardised value of the total microbial count (TMC), biocidal treatment should be carried out in the following order:
为确保微生物总数（TMC）的标准化值，应按以下顺序进行杀菌处理：

 once in the first two weeks of the month add ATE 36348a biocide with a dosage of 25 g/m3 of the total volume of water in the cooling system;
 在每月的前两周添加一次 ATE 36348a 杀菌剂，剂量为冷却系统中水总量的 25 g/m3;

 once in the second two weeks of the month add biocide ATE 36349a with a dosage of 25 g/m3 of the total volume of water in the cooling system.
 在每月的第二两周添加一次杀菌剂 ATE 36349a，剂量为冷却系统中水总量的 25 g/m3。

2. PROCEDURE FOR PRE-CLEANING AND PASSIVATION OF EQUIPMENT AND PIPELINES
2. 设备和管道的预清洗和钝化程序

To prepare the pipelines of the circulating cooling system of the equipment for operation we recommend to perform pre-start flushing and passivation, which will ensure removal of foreign mechanical impurities, oils and preservative greases, corrosion products from the pipelines and equipment, as well as create a protective film to protect metal surfaces before the start of permanent reagent treatment.
为了准备设备循环冷却系统的管道以供操作，我们建议进行启动前冲洗和钝化，这将确保去除管道和设备中的异物机械杂质、油和防腐剂油脂、腐蚀产物，并在开始永久试剂处理之前形成保护膜以保护金属表面。

Stage 1 - Pre-washing with water.
第 1 阶段 - 用水预洗。

Purpose: removal of sediment particles and contaminants loosely bound to the metal surface.
用途：去除松散结合在金属表面的沉积物颗粒和污染物。

Rinsing is carried out with technical water at the highest possible circulation speed for 12-72 hours.
用技术水以尽可能高的循环速度进行冲洗，持续 12-72 小时。

Stage 2 is the main cleaning stage.
第 2 阶段是主要清洁阶段。

Purpose: dissolution or dispersion of deposits that have already been partially prepared for washing during the previous flushing operation.
用途：溶解或分散在上一次冲洗操作中已经部分准备好洗涤的沉积物。

Flushing is performed with aqueous solution of "ATE 3704a" by introducing it into the pipeline filled with technical water at the design circulation rate for 12-48 hours.
用“ATE 3704a”水溶液进行冲洗，将其以设计循环速率引入充满工业水的管道中，持续12-48小时。

The recommended dosage of "ATE 3704a" is 100-120 g/m3 depending on the amount of deposits.
“ATE 3704a”的推荐剂量为100-120 g/m3，具体取决于沉积物的量。

During flushing, a part of the flushing solution is periodically discharged into the drain and replaced with a fresh one.
在冲洗过程中，一部分冲洗溶液会定期排入排水管，并用新鲜的冲洗液代替。

In the process of chemical washing it is necessary to control the pH value, concentration of iron and suspended solids in the circulating water.
在化学洗涤过程中，需要控制循环水中铁和悬浮物的pH值、浓度。

The recommended temperature of the washing solution is 400C. If the temperature of the washing solution drops below the recommended temperature, the reaction rate and, consequently, the efficiency of the washing process will be reduced.
洗涤液的推荐温度为400°C。如果洗涤液的温度低于推荐温度，则反应速率和洗涤过程的效率将降低。

"ATE 3704a" is a reagent designed for washing of pipeline surfaces from scale products and residual iron oxide deposits during pre-start-up preparation of pipelines.
“ATE 3704a”是一种试剂，设计用于在管道启动前准备过程中清洗管道表面的水垢产物和残留氧化铁沉积物。

Step 3 - Clear the cooling tower bowl of applied debris.
第 3 步 - 清除冷却塔碗中的碎屑。

Purpose: To remove debris from the cooling tower bowl.
用途：清除冷却塔碗中的碎屑。

Stage 4 - make-up water filling with addition of corrosion and scaling inhibitor in accordance with the calculation provided by ATE Ltd.
第 4 阶段 - 根据 ATE Ltd. 提供的计算，添加腐蚀和阻垢剂进行补充水填充。

To adjust the pH value of the washing solution to 8.5, the acid reagent ATE 43800 is supplied free of charge. Planned consumption
为了将洗涤液的pH值调节到8.5，免费提供酸试剂ATE 43800。计划消耗

ATE 43800 for pH correction of washing solution - 75 kg.
ATE 43800用于洗涤液的pH值校正 - 75 kg。