SU1433901A1 - Method of purifying waste water from petroleum products - Google Patents

Abstract

The invention relates to methods for cleaning wastewater from oil by filtration through a carbon-containing sorbent and can be used in power engineering, metallurgy and chemical technology. The aim of the invention is to increase the filtration cycle and improve the quality of the water to be purified. In order to carry out the process, waste water is filtered through a sorbent consisting of a mixture of 70-90 rob.%, Heat treated at 150-200 ° C and containing 10-30% of natural shungite carbon with 10-30% by volume of carbon carbon. The method makes it possible to increase the duration of the filter cycle by a factor of 100, to achieve 1 PR of petroleum products for discharge into the water bodies of the fishery value (0.05 mg / l). 3 tab.

Description

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SAE

ABOUT

The invention relates to the purification of waste water from petroleum products by filtration and can be used in various areas of the national economy for purifying water from small amounts of petroleum products to the norms of discharge into water bodies of fishery value.

The purpose of the invention is to increase honestly purified water and increase the filter cycle.

Example 1. Purified sewage water containing petroleum products is filtered through a carbon-containing material consisting of 70-90% by volume of shungit containing up to 30% carbon ji heated with ISO-ZOO Cj with 30-10% % carbon fiber

Shungite composition,%: C 23; SiOy. 54.5 CaO 0.54; MgO 0.83, 4.2; 4.9, crushed to a particle size of 0.5-3.0 mm and subjected to heat treatment at different temperatures (from 120 to 250 s) for 5 h,

The column is filled with filtering material consisting of 80% by volume of heat-treated schungite and 20% of carbon fiber. Water is passed through the filter until naphtha products are detected in the amount of 0.05 mg / l, i.e. before-the-money

In tab. 1 shows the data on: anger the temperature of heat treatment of shungite for the duration of filtration, expressed in the number of volumes of water passed through one filter volume before the breakthrough of petroleum products into purified water

The greatest effect is observed at. heat treatment of schungite at 150-200 C.

The choice of shungite with a carbon content of 10 to 30% is due to the fact that such shungite has a better adsorption capacity than shungites with a high carbon content, and it is possible to achieve a greater depth of purification.

Example 2. Method wire :: by. Example 1, but using 95–70% by volume as a filtering material. one heat-treated at 200 Q ,, and 5-30% carbon fiber

The results are shown in table 2.

As can be seen from the obtained data, an increase in carbon fiber content of 30% leads to a slight increase in filter performance, but it is not advantageous because the fiber is an expensive material, which leads to an increase in the cost of cleaning I m of water.

The content of carbon fiber in the filter loading less than 10% does not affect the increase in the service life of the filter before the breakthrough of petroleum products into purified water {Of, 05 mg / l).

Table 3 presents data showing the advantage of the proposed wastewater treatment method compared to the known one.

As can be seen from Table 3, the use of a material consisting of short-lived shungite and carbon fiber increases productivity by more than 100 times compared to the known material, and by 1.7 times compared to heat-treated shungite.

Thus, the proposed purification method makes it possible to increase the duration of the filter cycle by a factor of 100, to improve the quality of the water to be purified and to reach the MPC of petroleum products for discharge into fish bodies of fishing activity (0.05 mg / l).

Claims (1)

Invention Formula The method of cleaning sewage from petroleum products, including filtration through a charge containing thermally treated shungite, characterized in that, in order to improve the quality of purified water and increase production: a mixture of shungite containing 10-30% carbon and heat-treated at 150-200 ° C, with carbon fiber in the following ratio of components,%: Shungite containing 10-30% carbon, heat treated at 150-200 C. 70-90 Carbon fiber 10-30 Table 3 Thermal shungite 50 Heat-treated shungite (80 vol.%) + Carbon fiber (20 vol.%). Shungite by a known method homemade fiber (20 vol.%) thirty 50 600 52 eight& 1040 0.8 3 10,400 200