DD215301A2 - METHOD AND CIRCUIT ARRANGEMENT FOR PREPARING WATER FROM FISH GROWING SYSTEMS - Google Patents

Abstract

The invention relates to a method and a circuit arrangement for the treatment of the water of fish farms by electrolysis according to WP 203896. D. The invention aims to reduce the energy consumption in the electrolytic water influence by capacitor discharges based on pulse current. The method according to the invention is characterized in that for the implementation d. Electrolysis of the charging and discharging of the capacitor can be used and both pulses are guided by a common electrolysis cell. For this purpose, the electrolytic cell is connected to the charging and discharging circuit of the capacitor. If you want to achieve different electrolytic reactions, the charge and discharge pulse can be passed through separate electrolysis cells.

Description

Inventor: Riohard Heise Representative: Jürgen Klooos Ludwig Heine

Method and circuit arrangement for the treatment of the water of fizohzuohtanlagen

The invention relates to a method and a circuit arrangement for the treatment of the water of fish farms by electrolysis according to WP 203 896

Characteristic of the known technical solutions

In the patent application WP 203896 a method and a circuit arrangement is proposed, in which by means of Irapulsstrom (Kondensaiiorentladungen) industrially polluted wastewater are purified by electrolysis or in the wastewater, a pH shift is carried out in more favorable areas.

The disadvantage of the electrolytic water influence by pulse current according to WP ^l 203 896 is that the capacitor used must be discharged in any way before 3eder the charge. This is a part of the energy expended lost.

Object of the invention

The invention aims to reduce the energy consumption in the electrolytic-Schen water influence by based on Kbndensatorentladungen pulse current.

-SMRZ 1983 * 07429 ·

Explanation of the essence of the invention

The invention is based on the object of providing a method and a circuit arrangement for the electrolytic treatment, in which the capacitor energy required for the electrolytic water influencing by the pulsed current is completely utilized.

The method for the treatment of the water of fish farms by capacitor discharge based Impulsstromelektro- - lysis is according to the invention characterized in that are used to carry out the electrolysis of the charging and discharging of the capacitor and both pulses are passed through a common electrolytic cell. In order to achieve various electrolytic reactions, it is appropriate to carry the charge and discharge pulse through separate electrolysis cells. The circuit arrangement for carrying out the electrolytic water treatment according to the invention daduroh characterized in that the electrolysis cell with the consisting of a capacitor, a semiconductor valve, a Ladeinduktivität- and a diode charging circuit and loit consisting of a second semiconductor valve, the capacitor and a second diode Entladekreis connected is.

The circuit arrangement for achieving various electrolytic reactions is characterized in that two electrolytic cells are connected to the charge and discharge of the Bnpulskondensators.

The described solution according to the invention is based on the following considerations:. ·

For the energy taken from the supply network, the following applies to the capacitor charge:

P _± = E · ^ idt (Ws) with Q _± = C idt (As) -.

Thus, for the capacitor energy, P _K = E · Q ^ during the charging process.

Since it must be discharged for each new charge of the capacitor C, the same amount of charge Q. is again during the discharge ^:

Charge z.ur available.

During a period, a charge amount of Q = 2 · Q ^ is available when the charging and discharging process is used at the same time.

If, on the other hand, DC electrolysis is considered, the following relationships are obtained:

For the Gleiohstromenergie applies:

^P G = ^{E; 1} G * * O ^{or P} G = ^E * ^Q G ·

Taking into account that twice the amount of discharge is available in the pulse mode utilizing the discharge, the following can be derived from the energy ratio:

1 · ^Q

^p i · ^Q i and with "ι Q ^P GM = · 1 2 ^Q - 1. ⁸ G ^P G E. ^Q G

1 . Pulse energy = direct current energy. 1 = 0.5 - ^ -, Q = 2 · Q ₀

With the same energy, the pulsed operation delivers twice the charge.

2. Same charge quantities

1 - ^P i = 1 Q. P, = 0.5 P _r

With the same amount of charge, four energy is saved in pulse mode up to 50 ⁰ J) .

embodiment

The invention will be explained below with reference to the drawing. illustrated embodiment explained in more detail

Fig. 1 Charge and discharge of the capacitor C via an electrolytic cell for pH-Y / ert shift or oxygen production

FIG. 2 Charge and discharge of the capacitor C via two different electrolysis cells for pH shift and oxygen production

It is known that in order to produce the purest oxygen by means of the electrolytic decomposition of water for 1 m oxygen, about 10 kWh of electrical energy are required. This corresponds to an energy consumption of about 7 kWh per kg .Q ₂ . At pulsed current, the energy is reduced to 3.5 kWh / kg Q ₂ .

, As the electrolyte distilled water with 300 g / l EDH oaeex NaOH is used in a known manner. According to this known process, only H ₂ O is consumed since the Na and K ions repeatedly form H) H or NaOH with the QH ions.

This is for the generation of 1 n? Q ₂ and 2 m H ₂ requires a water quantity of 1.76 liters · Since at normal pressure 1 m Q ₂ weighs 1.43 kg, for 2 kg Q ₂

, 1.76 / 1, 43 = 1.23 liters of H ₂ O required ·

The energy required for the production of oxygen in the air liquefaction is only about 1/3 compared to the electrolysis. This value applies only to large consumers who consume oxygen constantly. However, this relatively low value refers only to the pure producer costs. On the consumer side, the costs of transport, storage, system costs and losses due to overpressure compensation increase many times over. In addition, the space required compared to the electrolytic water decomposition. The space requirement is about 50 f 100: 1. The storage of potash and caustic soda is usually not bound to any special plant engineering regulations and thus easily ·

The particular value of an impulse system ^N for electrolytic water treatment is due to the fact that it can be used simultaneously for pH shift and oxygen enrichment.

By simply choosing the voltage ^v and the electrodes, such a system can be adapted to all practical conditions. Since the electrolysis begins even at voltages less than'3 V, an emergency operation is particularly advantageous.

According to Fig. 1, the capacitor C is charged by means of a controllable semiconductor valve TiLj, the charging inductance Lj (conduction or additional inductance), the diode D ^ and the electrolytic cell EZ ^. After the charging process, the semiconductor valve Tkj. Duron subsequent ignition of the Halbleiterventii; s Th ₂ , the capacitor C via the electrolytic cell EZ ₁ and the diode D _{2 is} discharged. In both cases, the current flows from the anode to the cathode and the amount of capacitor charge accumulates in the cell.

Thus, the capacitor charge amount Q. = E * C is sent through the electrolytic cell twice.

Another embodiment is shown in FIG. 2. Thereafter, the oxygenation at charge is combined with the pH shift upon discharge.

For the separation of the electrolysis products cells are advantageously used with diaphragm.

The mechanical structure of the electrolysis cells can take place in compliance with the / feicherheitstechnischen concerns according to the known design principles. ₍ In the application of the method according to Fig. 2, of course, a permutation of the order of oxygen and pH electrolysis is conceivable *

In order to keep the size of the Kbndensatorkapazität in limits, a parallel circuit - in particular according to Fig. 1 - proposed

Claims (4)

invention claim 1. Process for the treatment of the water of fish farms by pulsed electrolysis on the basis of Discharge according to WP 203 896, characterized in that for carrying out the electrolysis of the charging and discharging of the capacitor (C) are "used and" both pulses are passed through a common electrolytic cell (EZ ₁ ). 2. Procedure for the treatment of the water of fish farms according to point 1 _? characterized in that the charge and discharge of the capacitor (C) by separate electrolysis cells (EZ ₁ and EZ ₂ ) are performed. • 3. Circuit arrangement for carrying out the method according to item 1, characterized in that the electrolysis cell (EZ ₁ ) with the capacitor (C), semiconductor valve (Th ₁ ), charging inductance (L ₁ ), and diode (D ₁ ) existing charging circuit and is connected to the discharge of the semiconductor valve (Th ₂ ), capacitor (C) and diode (D ₂ '). 4. Circuit arrangement for carrying out the method according to item 1, characterized in that two ElektroIysezeIlen (EZ ₁ and EZ ₂ ) .mit the charging circuit and the discharge circuit of the pulse capacitor (C) are connected. drawings