SU836224A1

SU836224A1 - Device for oxygen removal from water

Info

Publication number: SU836224A1
Application number: SU782703406A
Authority: SU
Inventors: Тамара Александровна Кравченко; Надежда Васильевна Кузнецова; Анатолий Яковлевич Шаталов
Original assignee: Воронежский Ордена Ленина Государственныйуниверситет Им. Ленинского Комсомола
Priority date: 1978-12-26
Filing date: 1978-12-26
Publication date: 1981-06-07

Description

Изобретение относится к области промышленной электрохимии, конкретно к устройствам, предназначенным для обескислороживания воды, и может быть использовано в процессах водоподготовки.The invention relates to the field of industrial electrochemistry, specifically to devices designed for deoxygenation of water, and can be used in water treatment processes.

Известно устройство для обескислороживания воды редокситом, включающее электроды, анодную камеру и катодную камеру, заполненную редокситом. Катодная камера расположена ниже анодной, а сетчатый медный катод расположен на днище катодной* камеры [I J.A device for deoxygenation of water with redoxite is known, including electrodes, an anode chamber and a cathode chamber filled with redoxite. The cathode chamber is located below the anode, and the mesh copper cathode is located on the bottom of the cathode * chamber [I J.

Недостатком известного устройства является низкая производительность и высокий расход электроэнергии.A disadvantage of the known device is low productivity and high power consumption.

Целью изобретения является повы~ пение производительности устройства й снижение расхода электроэнергии.The aim of the invention is to increase the productivity of the device and reduce energy consumption.

Поставленная цель достигается тйМ, что в устройстве для обескисло- . рдживания воды редокситом, включающем электроды, анодную камеру и катод2 ную камеру, заполненную редокситом, катодная камера размещена внутри анодной камеры и' катод расположен по продольной оси катодной камеры.The goal is achieved TyM, which in the device for depleted. The water is redoxite-containing, including electrodes, the anode chamber and the cathode chamber filled with redoxite, the cathode chamber is located inside the anode chamber and the cathode is located along the longitudinal axis of the cathode chamber.

На фиг. 1 представлено попереч⁵ ное сечение устройства; на фиг. 2 -, общий вид устройства.In FIG. 1 is a transverse section of the device ⁵ Noe; in FIG. 2 -, general view of the device.

Устройство имеет анодную камеру I, разделенную на две части, в каждой из которых расположены платиновые или никелевые электроды 2. В центре между двумя частями анодной камеры расположена катодная камера, в которой находится редоксит 3. По ₁₅ продольной оси катодной камеры расположен медный электрод 4. Устройство заполнено водой или электролитом в зависимости от цели работы реактора. Стенки, отделяющие части 20 анодной камеры от катодной, выполнены из катионитовой мембраны*5, остальные - из диэлектрического материала. В верхней и нижней частях устройства имеются патрубки 6-11 для пропускания воды при обескислороживании и заливании электролита в процессе регенерации.The device has an anode chamber I, divided into two parts, each of which contains platinum or nickel electrodes 2. In the center between the two parts of the anode chamber there is a cathode chamber in which redoxite 3 is located. A copper electrode 4 is located along the ₁₅ longitudinal axis of the cathode chamber. The device is filled with water or electrolyte, depending on the purpose of the reactor. The walls separating the parts 20 of the anode chamber from the cathode are made of a cation exchange membrane * 5, and the rest are made of dielectric material. In the upper and lower parts of the device there are nozzles 6-11 for transmitting water during deoxygenation and flooding of the electrolyte during the regeneration process.

Работа устройства заключается в следующем.The operation of the device is as follows.

После окисления редоксита патрубок 10 перекрывают, а патрубок 7 отсоединяют от воды. Через патрубки 7-10 пропускают электролит (обычно 0,1 н. раствор едкого натра) до тех пор, пока pH среды не перестанет меняться, а через патрубки 6-8 заливают электролит в анодную камеру.After oxidation of the redoxite, the pipe 10 is closed, and the pipe 7 is disconnected from the water. An electrolyte (usually 0.1 N sodium hydroxide solution) is passed through nozzles 7-10 until the pH of the medium ceases to change, and electrolyte is poured into the anode chamber through nozzles 6-8.

Затем редоксит катодно активируют подачей последовательно уменьшающегося потенциала от—‘0,40 до -0,90 В и поляризуют потенциоста'?ически при потенциале -0,70 В, в результате чего в анодной камере идет процесс выделения кислорода 40 Н~= =O₂+2HgO+4e. В катодной идет твер дофазное восстановление металла: СиО+2е+2Н «Си+Н^О.Then, the redoxite is cathodically activated by supplying a successively decreasing potential from —0.40 to -0.90 V and polarizing the poten- ₂ + 2HgO + 4e. Solid phase metal reduction occurs in the cathode: CuO + 2e + 2H «Cu + H ^ O.

Ток при этом возрастает до максимального значения и падает практически ⁴до нуля, что и служит указанием на окончание регенерации. После этого к патрубку 7 подсоединяют воду, заполняют водой анодную камеру и уст836224 ' ' 4 ройство работает в режиме обескислороживающего реактора.The current in this case increases to the maximum value and drops almost ⁴ to zero, which serves as an indication of the end of the regeneration. After that, water is connected to the pipe 7, the anode chamber is filled with water, and the device 836224''4 the device operates in the deoxygenation reactor mode.

Расположение анодной камеры внутри катодной приводит к уменьшению ₅ толщины слоя редоксита почти в 300 · раз по сравнению с известным устройством. За счет этого время восстановления 1 г- экв окисленного металла в редоксите уменьшается в шесть 10 раз, а энергозатраты в 1,5 раза.The location of the anode chamber inside the cathode leads to a decrease in ₅ thickness of the redoxite layer by almost 300 · times compared with the known device. Due to this, the recovery time of 1 g-equiv of oxidized metal in redoxite is reduced by six 10 times, and energy consumption by 1.5 times.

Claims

The invention relates to the field of industrial electrochemistry, specifically to devices designed for the deoxygenation of water, and can be used in water treatment processes. A device for deoxidizing water with redoxite is known, which includes electrodes, an anode chamber and a cathode chamber filled with redoxite. The cathode chamber is located below the anode one, and the mesh copper cathode is located on the bottom of the cathode chamber l J. The drawback of the device is a low performance and high power consumption. The aim of the invention is to improve the performance of the device and reduce power consumption. This goal is achieved by a TIM that, in a water disinfection device with redoxite, including electrodes, an anode chamber and a cathode chamber filled with redoxite, the cathode chamber is located inside the anode chamber and the cathode is located. along the longitudinal axis of the cathode chamber. FIG. 1 shows a cross section of the device; in fig. 2 -. View the device. The device has an anode chamber 1, divided into two parts, each of which has platinum or nickel electrodes.

2. In the center between the two parts of the anode chamber is the cathode chamber, in which the redoxite is located

3. The copper electrode is located along the longitudinal axis of the cathode chamber.

4. The device is filled with water or electrolyte, depending on the purpose of the reactor. Walls,: Separately cncie part of the anode chamber from the cathode, performed from the cation membrane 5, the rest - from a dielectric material. In the upper and lower parts of the device there are nozzles 6-11 for the passage of water during the deoxygenation and pouring of the electrolyte during the regeneration process. The operation of the device is as follows. After the oxidation of the redox oxide, the pipe 10 is closed and the pipe 7 is disconnected from the water. The electrolyte is passed through the pipes 7-10 (usually O, I n sodium hydroxide solution) until the pH of the medium ceases to change, and the electrolyte is poured into the anode chamber through the pipes 6-8. Then, the cathodically redoxite is activated by applying a successively decreasing potential from -0.40 to 0.90 V and is polarized potentiostagically at a potential of -0.70 V, as a result of which 40 P 02 + 2H20 + 4e is in the anode chamber. In the cathode there is a solid-state reduction of the metal: CuO + 2e + 2H Cu + H2P. In this case, the current rises to the maximum value and drops almost to zero, which serves as an indication of the end of regeneration. After that, water is connected to the nozzle 7, the anode chamber is filled with water, and the device operates in a model-freezing reactor. .The location of the anode chamber inside the cathode internally leads to a decrease in the thickness of the redoxite layer by almost e 300 times compared with the known device. Due to this, the reduction time of 1 g-eq of the oxidized metal in the redoxite is reduced by six times, and the energy consumption by 1.5 times. DETAILED DESCRIPTION A device for deoxidizing water with redoxite, comprising electrodes, an anode chamber and a cathode chamber filled with redoxite, characterized in that, in order to improve performance and reduce energy consumption, the cathode chamber is located inside the anode and the cathode is located along the longitudinal axis of the cathode chamber. Sources of information taken into account in the examination 1. USSR author's certificate No. 552303, cl. C 02 B 1/40, 1974 (prototype).

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