余氯比色溶液的配制翻译-中英
（1）磷酸盐缓冲贮备溶液：将无水磷酸氢二钠（Na2HPO4）和无水磷酸二氢钾（KH2PO4）置于105℃烘箱内2小时，冷却后，分别称取22.86克和46.14克。将此两种试剂共溶于蒸馏
水中，并稀释至1000mL，至少静置4天，使其中胶状条质凝聚沉淀，过滤。
（2）磷酸盐缓冲溶液：吸取200ml磷酸盐缓冲贮备溶液，加入蒸馏水稀释至1000mL，此溶液的PH值为6.45。
（3）重铬酸钾—铬酸钾溶液：称取干燥的0.1550克重铬酸钾及0.4650克铬酸钾，溶于磷酸盐缓冲使用溶液中，并稀释至1000mL。此溶液所产生的颜色相当于1mg/L余氯与邻联甲苯
胺所产生的颜色。
（4）0.01—1.0ml/L永久性余氯标准比色管的配制方法：按表所列数量，吸取重钾—铬酸钾溶液，分别注入50ml具塞比色管中，用磷酸盐缓冲溶液稀释至50ml刻度，避免日光照射
，可保存6个月。
永久性余氯标准比色溶液的配制
余 氯
（mg/l） 重铬酸钾—铬酸钾溶液（ml） 余 氯
（mg/l） 重铬酸钾—铬酸钾溶液（ml）
0.01 0.5 0.50 25.0
0.03 1.5 0.60 30.0
0.05 2.5 0.70 35.0
0.10 5.0 0.80 40.0
0.20 10.0 0.90 45.0
0.30 15.0 1.0 50.0
0.40 20.0
注释：若水样余氯大于1mg/L，则需另行配制较浓的余氯标准色。即按照上述永久性余氯比色标准溶液的相当步骤，但将重铬酸钾和铬酸钾的量增加10倍，配制成相当于10mg/L余
氯的标准色，再适当稀释，即为所需的较浓余氯标准色列。
试剂：邻联甲苯胺溶液：称取1.35克二盐酸邻联甲苯胺[（C6H3CH3NH2）2•HCL]，溶于500mL蒸馏水的混合液中，盛于棕色瓶内，在室温内保存，可使用6个月。当温度低于0℃时，
邻联甲苯胺将析出，不易再溶解。
步骤：
1、取配制永久性余氯标准比色管用的同样50ml比色管，先放入2.5ml邻联甲苯胺溶液，再加入澄清水样50ml，混合均匀。水样的温度最好为15—20℃，如低于此温度，应先将水样
在温水浴中使温度升高到15—20℃。
2、水样与邻联甲苯胺溶液接触后，如立即进行比色，所得结果为游离性余氯，如放置10分钟使产生最高色度，再进行比色，则结果为水样的总余氯。
3、如余氯浓度很高，会产生橘黄色。若水样碱度过高而余氯浓度较低时，将产生淡绿色或淡蓝色。此时可多加1ml邻联甲苯胺溶液，即产生正常的淡黄色。
4、如水样浑浊或色度较高，比色时减除水样所造成的空白。
十． 联胺的测定（比色法）
一、概要
1、本法是基于对二甲基胺苯甲联胺反应，在酸性介质中生成檬黄色的化合物， 颜色的强度与水中联胺的含量有关。
2、本方法适用于联胺含量为2~200微克/升的水样。
二、仪器
具有磨口塞的50毫升比色管。
三、试剂
1、对二甲基胺苯甲醛溶液：称取一克对二甲基胺苯甲醛，溶于50
毫升无水乙醇（或异戊醇）中，加入10毫升浓盐酸，混匀。
2、联胺标准溶液：
（1）贮备溶液（1毫升≈100微克N2H4）：
准确称取0.4063克硫酸联胺(NH2) 2•H2SO4溶于已置有74毫升浓盐酸（比重1.19）的1000毫升容量瓶中，用蒸馏水稀释到刻度，混匀。
取50毫升溶液，用蒸馏水稀释到100毫升，用2N氢氧化钠溶液中和后，按（S－19－1）碘滴定法标定其浓度。
（2）工作溶液
工作溶液（1毫升≈2微克N2H4）；按标定结果取2/K毫升贮备溶液，注于100毫升容量瓶中，用蒸馏水稀释至刻度，混匀，此工作溶液应在使用时配制（K为贮备溶液的浓度系数）
。
四、测定手续
1、取水样50毫升，注于比色管中。
2、另取数支比色管按下表加入联胺工作溶液，并用蒸馏水稀释至50毫升。
编 号
1
2
3
4
5
6
7
联胺工作溶液毫升数 0 0.05 0.15 0.25 0.50 0.75 1.0
相当于原水样含联胺量
(微克/升)
0
2
6
10
20
30
40
编 号
8
9
10
11
12
13
联胺工作溶液毫升数 1.5 2.0 2.5 3.0 4.0 5.0
相当于原水样含联胺量
(微克/升)
60
80
100
120
160
200
2、往上述比色管中各加入3毫升对二甲基胺基苯甲醛溶液（用滴定管操作），混匀，放置30分钟，进行比色，记录结果。
3．Functions and Effects of Equipment:
The electrolytic cell is the core component of the whole device, and the seawater passes through the electrolytic cell is electrolyzed by DC, generating
effective chlorine, thus the performance of electrolytic cell directly affects the whole device. As for the device, there are two groups of electrolytic
cell modules in parallel connection, and each group is composed of 9 SC400/1 type electrolytic cells through series connection of water circuit and electric
circuit, with a chlorine production rate of 65kg/h/set.
IV．Storage Tank for Sodium Hypochlorite Solution:
1．Technical Requirement:
1) The design of the sodium hypochlorite storage tank should take space of gas-liquid separation into consideration. The structure of storage tank shall be
designed to discharge hydrogen gas and precipitates safely. The tank is fixed with a level gauge with functions of in-situ indication and signal distant
transmission. The storage tank shall hold a volume for 4 hours that is 1.15 times of once impact chemical adding quantity by one single unit and buffer
capacity of continuous chemical adding quantity by two units for 10min.
2) The outdoor layout for the storage tank of sodium hypochlorite solution, which shall be made of opaque materials with good performance of corrosion
resistance to the sodium hypochlorite solution, the outer wall shall be anti-aging and salt spray proofing.
3) Besides interfaces for regular operation, the sodium hypochlorite storage tank shall be equipped with liquid-level measuring and controlling
interfaces, the blowdown interface, the dehydrogenation interface, the overflow interface and the manhole, etc.
2．Functions and Effects:
The three functions of the storage tank for sodium hypochlorite solution are as follows:
A．Dilute hydrogen air below 1% and discharge it into the atmosphere.
B．Store the sodium hypochlorous solution, when unbalanced flow occurs to electrolytic unit and chemical adding unit, it is necessary to ensure that the
chemical adding unit operates continuously, normally and steadily.
C．Discharge precipitates generated during electrolytic process periodically.
3．Equipment Specification:
Quantity: 2 Sets
Material: Steel rubber line
Stricture & Type: Vertical, cone bottom, elliptic top
Effective volume: 50m3
Accessory: Manhole, in-situ liquid level indication, liquid inlet, liquid outlet, air inlet, overflow pipeline, sewage outlet, etc.
External connecting ways: Flange
V. Equipment Specification of Chemical adding Pump:
Continuous adding Pump Impacting chemical adding pump Seawater pretreatment chemical adding pump Anti-penetrating chemical adding pump
Quantity 3 Sets 2 Sets 2 Sets 2 Sets
Structure & Type Horizontal centrifugal pump Horizontal centrifugal pump Diaphragm pump Horizontal centrifugal pump
Overflow partial materials Fluoroplastic alloy Fluoroplastic alloy PVDF Fluoroplastic alloy
Applicable medium NaClO solution NaClO solution NaClO solution NaClO solution
Motor Anti-explosion Anti-explosion Anti-explosion Anti-explosion
Flow 29m3/h 72m3/h 2m3/h 7.5m3/h
Lift 0.25Mpa 0.25Mpa 0.5Mpa 0.3Mpa
I．Acid rising system:
1. Equipment specification of acid rising pump:
Model: 40FSB-25 Fluoroplastic Alloy Pump
Flow: 3.6 m3/h
Lift: 0.25 Mpa
Power of motor: 2.2 kw
2. Acid liquid storage tank:
Quantity: 1 Set
Volume: 1.5m3
Material: Steel rubber line
Stricture & Type: Vertical, flat bottom
Accessory: In-situ liquid level indication, liquid inlet, liquid outlet, acid vapor outlet, sewage outlet, etc.
External connecting ways: Flange
3. Acid rising tank:
Quantity: 1 Set
Volume: 1.5m3
Material: Steel rubber line
Stricture & Type: Vertical, flat bottom
Accessory: In-situ liquid level indication, liquid inlet, liquid outlet, overflow pipeline, sewage outlet, etc.
External connecting ways: Flange
武汉翻译公司
2013.7.9