SU1154219A1 - Method of biochemical purification of waste water - Google Patents

Abstract

1. A method for biochemical treatment of waste water containing organic compounds, including treatment with immobilized microorganisms on the carrier in anaerobic and treatment under aerobic conditions, characterized in that. in order to increase the degree of purification, after treatment under anaerobic conditions, the mixture is aerated, treatment under aerobic conditions is carried out by microorganisms immobilized on a carrier, and pp microorganisms are used as aerobic and anaerobic conditions. Pseudomonos, Bacillus, Bacterium, and the treatment under anaerobic conditions is carried out at 32-37s, potassium salts of ortho-phosphoric acid are introduced as biogenic nutrition, the sludge mixture after treatment under aerobic conditions is filtered and clarified. 2. Method POP1, characterized in that the treatment with immobilized microorganisms in (L aerobic conditions is carried out at 18-22 C. 3. Method pop. 1 and 2, characterized in that the potassium salts of orthophosphoric acid are introduced in an amount of 0.05 g / l wastewater and treatment is carried out at a pH of 6-8. From 4 ND

Description

eleven

The invention relates to the treatment of industrial and domestic wastewater contaminated with organic compounds, mainly nitro and halo aromatic derivatives with a high degree of salinity, and can be used for effective wastewater treatment of chemical and pharmaceutical pharmaceutical enterprises.

The aim of the invention is to increase the degree of wastewater treatment.

Example 1. Wastewater treatment of an oxyacetyl production (1-para-nitrophenyl-2-acetamidoethanol) is carried out.

Water pollution is characterized by the following indicators, given in Table. one.

At the moment of injection of water, one and two substituted potassium phosphates are introduced into the pressure vessel at the rate of 0.05 g / l (0.01: 0.04 g / l, respectively). As a result of the precipitation, an insignificant easily settling amorphous precipitate is formed, amounting to 0.4% of the total volume of the collected effluent. COD is reduced to 8040 mg Og / l (i.e. 19%). Then water is supplied to the I stage of cleaning, consisting of three chambers with loading in the form of foam plates and nylon fabric webs on the frames. Biomass of adapted microorganisms in the amount of 10% of the volume is introduced into each chamber. The temperature of the treated water is maintained within the range of 32-37 C.

Colour

Smell

COD (arbitration method)

PH

Main contaminants, mg / l

Oxyacetyl compound (OSA)

Nitrochlorohydrinstyrene (NHG.S)

Oxylamine (OA)

2

During a purification step 1, the measured COD is 4710.0 mg, which is approximately 53% purification. Then the purified water enters the second stage of purification. In this case, in the first chamber of the second purification stage, the incoming water is continuously aerated with air. In subsequent chambers, the purification is carried out by immobilized microorganisms at a water temperature of 18-20 ° C. After that, the purified water is passed through a filtration unit and clarification. The results of wastewater treatment are presented in table 2.

Example 2. Waste water is treated with the same production with the following characteristics given in Table. 3

All cleaning is carried out in the same way as in example 1, except that the temperature regime at stage I of cleaning is maintained within 3537 ° C and also increases the surface area of the load by 27%. The results of purification are given in table. four.

From tab. 1 and 4, it can be seen that in the first example the purification rate is 94.8%, in the second - 95.2%.

In both examples, the main, difficult to biological degradation, contaminants,

Sewage water having undergone biochemistry treatment according to the proposed manual is completely discolored. Table 1

one

Magnitude

Aromatic tan brown, 5 points 10000 mg 0 / l, 0

300.0 250.0 1200.0

Indicators

Table 2 Size

Colour

Smell ,

pH

COD (arbitration method)

Major contaminants:

OLS.

Oa

NHHS

Color Odor pH

COD (arbitration method) Main contaminants, mg / l: OAS OA. NHHS

Indicators

.Color Odor pH COD (arbitration method)

Colorless

1 point

7.50

520.0 mg Og / l

Missing

Table 3

Brown

Aromatic, 6 points

6.0

18000.0 mg wg / l

500 1600 400.

Table 4 Value

Colorless

1 point

7.5

870.0 mg Og. / L

Major contaminants:

OASO is absent

Oa

NHHS

11542196

Continuation of table 4

Claims (3)

1. METHOD FOR BIOCHEMICAL CLEANING OF WASTE WATERS containing organic compounds, including treatment with immobilized microorganisms on a carrier under anaerobic conditions and treatment under aerobic conditions, characterized in that, in order to increase the degree of purification, the mixture is aerated after treatment under anaerobic conditions, treatment under aerobic conditions microorganisms immobilized on a carrier, in the quality of which microorganisms of the rr are used under aerobic and anaerobic conditions. Pseudomonos, Bacillus, Bacterium, moreover, treatment under anaerobic conditions is carried out at 32-37 ° C, potassium salts of orthophosphoric acid are introduced as biogenic food, the sludge mixture is filtered and clarified after treatment under aerobic conditions. 2. The method of pop. 1, characterized in that the treatment with immobilized microorganisms under aerobic conditions is carried out at 18-22 ° C. 3. The method according to claims 1 and 2, characterized in that the potassium salts of phosphoric acid are introduced in an amount of 0.05 g / l of wastewater and the treatment is carried out at a pH of 6-8. SU .... 1154219> 1 1154219