SU290694A1 - The method of purification of wastewater from organic matter - Google Patents

Description

The invention relates to the field of purification of industrial and domestic wastewater from organic matter in closed life support systems.

The well-known joint venture of sewage purification from organic substances involves the treatment of the treated water with coagulants, for example, aluminum salts, and silica gel, followed by filtration of water. The disadvantage of this method is the complexity of the subsequent filtration to water purification (due to clogging of filtration cartridges) and, consequently, a decrease in the taste of water.

The proposed method differs from

known for using silica gel in a mixture with cellulose, which intensifies the process (the filtration time of the purified water is reduced by half) and allows you to simultaneously disinfect water.

The proposed method provides for the use of silica gel in a mixture with cellulose in an amount of not more than 5 g / l, as well as the use of silica gel in a mixture with cellulose in the form of a paste Tsellogel,

used to remove rust from the metal surface. The use of a paste for cleaning water that has already been used to remove rust from a metal surface significantly reduces the cost of the process.

Example. Cleaning is subjected to sanitary-domestic water containing fatty acids, a small amount of synthetic detergents of a different nature (sulfonic acids, mineral oils, higher alcohols, fats, etc.). The total amount of organic matter, as determined by bichromate oxidation, is about 5040 mg DL / L.

Paste Cellogel paste (prepared from hydrochloric acid, a corrosion inhibitor — formalin, cellulose, and water glass) is injected into the purified water in an amount of bg / paste and shaken in 20 ml of purified water and added to the total amount of waste water.

After three minutes of stirring for a 20 liter volume, rapid flaking and sedimentation take place. The clear filtered solution is oxidized.

136 MrOji / n and pH 2.1. Water is filtered through limestone,

EXAMPLE 2: Purification of water in a closed cycle for special conditions with a small volume of circulated water; In 20 l of sanitary water containing a significant amount of fatty acids, fats, urea and ammonia with an acidity of 2175-4360, add the paste Cellogel in the amount of 5 g / l (the paste is pre-mixed with 2 O ml of water). The oxidizability of clarified filtered water is 150-112 mgO ,, / l; pH 1.5 Water purification is performed with activated carbon and anion exchange resin. From the above examples, it is desirable that the use of adsorption

Characterization of disinfection vod: pasta Zellogel

properties of cellulose and hydrogel of silicic acid in an acidic environment provides sufficient purification of sanitary water using paste Tsellog e. It is possible to use waste paste containing some amount of iron chloride (the paste was used to remove rust from the surface of ferrous metals).

Example 3. According to the method described above, clean the bath-laundry water, adding 5 g / l of waste paste. The e-oxide of the water was reduced from 5340 to 135 mg O / l. The use of a paste at the same time provides bacterial purification of water. The number of bacteria in one liter is reduced from 68-10 to O (see table).

When using Shell Ore Ell, filtration time is halved. For example, when treating water with silica gel, the filtration time of one liter of water is 10 minutes; when processing water with Cellogel paste, 4 microns 5 seconds;

Claims (3)

Invention Formula The method of purification of wastewater from organic matter by treating the treated water with silica gel, characterized in that, in order to intensify the process to simultaneous disinfection of water, silica gel is used in a mixture with cellulose. 2 The method according to claim 1, characterized in that silica gel in a mixture with cellulose is used in an amount of not more than 5 g / l 3. A pop method, 1, characterized in that silica gel mixed with cellulose is used in the form of Cellorell paste.