RU2437845C1 - Method of producing insulation material for household and industrial waste dumping sites - Google Patents

Abstract

FIELD: chemistry.

SUBSTANCE: disclosed is a method of producing insulation material for household and industrial waste dumping sites. Waste water residue is detoxified with a humic reagent taken in amount of 0.3-10 wt % per dry substance of the waste water residue. The product of detoxifying the waste water residue with a humic reagent is then treated with a preparation of biologically active microorganisms for biodegradation and disinfection of excrement Fermentation accelerator UF-1 or a preparation of biologically active microorganisms for accelerated treatment of livestock wastes Tamir. The amount of the preparation of biologically active microorganisms ranges from 0.05 l to 1.00 l per ton of dry substance of waste water residue.

EFFECT: method enables stabilisation of insulation material, low content of inorganic and organic toxic agents therein.

6 tbl, 2 ex

Description

The invention relates to the field of environmental protection, in particular to the production of insulating material for landfills for household and industrial waste from neutralized sewage sludge from biological sewage treatment plants.

Wastewater sludge - a solid fraction of wastewater, consisting of organic and mineral substances separated in the wastewater treatment by sedimentation method (crude sludge), and a complex of microorganisms involved in the biological wastewater treatment and removed from the process (excess activated sludge) . Obviously, due to the large volumes of generated sewage sludge (WWS), the problem of their neutralization should be addressed simultaneously with the issues of using and / or disposal of neutralization products.

A known method of detoxification and disposal of sewage sludge (RF Patent No. 2125039, publ. 20.01.2009) using a humic concentrate obtained electrochemically from natural humites and caustobioliths of a coal series. Moreover, humic concentrate in an amount of up to 10.0 wt.% Is mixed with sewage sludge, after which they are used as insulating material at the landfill for household and industrial waste by increasing the resistance of water filtration through the treated sludge layer.

The known method of producing insulating material for landfills for household and industrial waste is not effective enough, since sewage sludge treated according to the prototype with humic concentrate, despite the increase in water filtration resistance, remains unstabilized: they continue to rot and produce an unpleasant odor. This contradicts the hygienic requirements for the placement and disposal of production and consumption waste (SanPiN 2.1.7.1322-03) and the Instructions for the design, operation and reclamation of landfills for solid household waste (Decree of the Ministry of Construction of Russia dated 05.11.1996). In addition, the detoxification of WWS according to the prototype leads to the binding, mainly, only of heavy metal ions, while the risk of impact on the natural environment of sewage sludge also lies in the fact that they contain, in addition to salts of heavy metals, organic toxicants, pathogenic microflora, helminth eggs. Accordingly, the non-disinfected insulating material obtained by the prototype method does not meet the requirements of environmental protection, including in terms of its sanitary-bacteriological and parasitological parameters (GOST R 17.4.3.07 - 2001).

The problem to be solved and the expected technical result are to increase the efficiency of the method of producing insulating material for landfills for household and industrial waste by ensuring stabilization of the insulating material, reducing the content of inorganic and organic toxicants in it, as well as through its additional disinfection.

The problem is solved in that the method of producing insulating material for landfills for household and industrial waste by detoxification of sewage sludge with a humic reagent, taken in an amount of from 0.3 wt.% To 10.0 wt.% On dry matter of sewage sludge, differs the fact that in addition the detoxification product of the sewage sludge with a humic reagent is treated with a preparation of microorganisms for biodegradation and neutralization of manure and litter “UV-1 Fermentation Accelerator” or with a biologically active microorganism preparation isms for accelerated processing of animal waste "Tamir" taken in an amount of from 0.05 liters to 1.00 liters per ton of dry matter of sewage sludge.

The inventive method allows detoxification of sewage sludge with a humic reagent, taken in smaller quantities relative to the prototype. When using a humic reagent in an amount of less than 0.3 wt.%, And a preparation of biologically active microorganisms - in an amount of less than 0.05 L per ton of dry matter of sewage sludge, the effectiveness of stabilization, detoxification and neutralization of sewage sludge and, therefore, insulating material. The use of a humic reagent in an amount of more than 10.0 wt.%, And the preparation of biologically active microorganisms in an amount of more than 1.00 l per ton of dry matter of sewage sludge is economically disadvantageous, since further stabilization, detoxification and neutralization of sewage sludge and, accordingly, insulating material is not observed.

The authors are aware of the technologies for using preparations of biologically active microorganisms for combating pathogenic microorganisms and helminths of organic waste from animal husbandry and poultry farming, for example, the method of disinfecting against pathogenic microorganisms and helminths of organic waste from animal husbandry and poultry farming by using a suspension of Actinomyces fradiae strain (RF Patent No. 2298031, publ. 27.04. 2007). However, the authors of the proposed technology for the disposal of WWS have also identified new properties of biologically active microorganisms, namely, the properties of a consortium of microorganisms not only to disinfect sewage sludge from pathogenic microflora and helminth eggs, but also to participate in the processes of disposal of WWS from inorganic toxicants - salts of heavy metals and organic toxicants - hydrocarbons, petroleum, petroleum products, benz (a) pyrene. In this case, according to the authors, the properties of microorganisms manifest themselves on organometallic compounds, in this case obtained as a result of preliminary treatment of WWS with a humic reagent.

The proposed method for producing insulating material for landfills for household and industrial waste by detoxifying WWS allows one to obtain a stabilized insulating material that meets environmental requirements for the content of organic and inorganic toxicants, as well as for sanitary-bacteriological and parasitological indicators (GOST R 17.4.3.07- 2001), as well as the requirements for the disposal and disposal of production and consumption waste (SanPiN 2.1.7.1322-03) and the requirements of the Design Manual to the management, operation and reclamation of landfills for municipal solid waste (Decree of the Ministry of Construction of Russia dated 05.11.1996).

The reagents used are natural for the environment, do not form toxic compounds in soil and water, do not pollute the atmosphere, and do not adversely affect the flora, fauna and biogeocenosis in general, even when using high doses.

The method of obtaining insulating material for landfills for household and industrial waste is carried out by the following sequence of operations:

1) detoxification of WWS with its treatment with a humic reagent taken in an amount of from 0.3 wt.% To 10 wt.% On the dry substance of WWS with stirring;

2) treatment of the product of the detoxification of the WWS with a humic reagent with the preparation of biologically active microorganisms taken in an amount of from 0.05 L to 1.00 L per ton of dry substance of the WWS.

Examples of specific implementation of the method

Example 1

Option 1 - according to the claimed method.

Detoxification of sewage sludge from municipal sewage treatment plants of Municipal Unitary Enterprise “Ufavodokanal”, obtained by dehydration on silt maps to a moisture content of 70%, was carried out by sequential treatment of biologically active microorganisms (reagent 2) with a humic reagent (reagent 1) and a preparation (consortium).

Option 2 - for comparison with the claimed method.

Detoxification of sewage sludge from municipal sewage treatment plants of Municipal Unitary Enterprise “Ufavodokanal”, obtained by dehydration on silt maps to a moisture content of 70%, was carried out by treatment with a consortium of biologically active microorganisms (reagent 2).

As a humic reagent, the EcoOrganica preparation (reagent 1) was used, manufactured in accordance with TU 0392-001-99118391-2006 (table 1). EkoOrganika liquid fertilizer is a complex organic-mineral fertilizer. The main active ingredient of the drug is physiologically active potassium salts of humic acids (potassium humates). Also, the composition of the drug includes amino acids, carbohydrates, water-soluble carboxylic acids (oxalic, succinic, malic, citric), mineral nutrition elements (nitrogen, phosphorus, potassium) and trace elements (iron, copper, zinc, manganese, boron, molybdenum, etc.) .

Table 1 Characteristics of the humic reagent "EcoOrganics" The determined indicator unit of measurement Norm according to TU 0392-001-99118391-2006 Appearance The liquid is dark brown. colors Moisture content % 86-98 Organic matter content % 8-12 The content of potassium salts of humic acids % 4-5 Mass fraction of potassium salts of humic acids per dry matter, not less than % 70 pH KCl suspension 7.5-10 Mass fraction of nitrogen mg / 100 g not less than 100.0 Mass fraction of phosphorus mg / 100 g not less than 100.0 Mass fraction of potassium mg / l not less than 100.0 Mass fraction of arsenic mg / l no more than 2.0 Mass fraction of cadmium mg / l no more than 0.5 Mass fraction of mercury mg / l no more than 2.1 Mass fraction of lead mg / l no more than 32 Effective specific activity of radionuclides Bq / L no more than 300 The specific activity of technogenic radionuclides rel.ed 1 rel. Mass concentration of 3.4 benz (a) pyrene mg / kg no more than 0,02

As a preparation (consortium) of biologically active microorganisms, a means for biodegradation and neutralization of manure and litter (“fermentation accelerator” UV-1, manufactured in accordance with TU 9291-008-00492374-2007), consisting of a suspension of living cultures that actually live in soil - Actinomyces fradiae of Candida krusei yeast in physiological saline (reagent 2). Living cultures - Actinomyces fradiae and Candida krusei - suppress the propagation of opportunistic bacteria and molds. 1 cm ^{3 of the} preparation contains at least 2 · 10 ⁸ CFU (colony forming units) of living microorganisms. In the process of biochemical reactions accompanying the vital activity of microorganisms, the protein, hydrocarbon and plant parts of the WWS decompose, fermentation processes increase, the temperature of the fermenting mass increases, resulting in the destruction of helminths and protozoa, as well as stabilization of sewage sludge.

Preparation of working solutions

The working solution of reagent 1 is prepared at the rate of 2 kg of the drug per 30 liters of non-chlorinated water (taking into account the need to prevent overmoistening of WWS).

The working solution of reagent 2 is prepared at the rate of 0.05 liters of the drug per 50 liters of non-chlorinated water (taking into account the need to prevent overmoistening of WWS).

WWS processing according to option 1

Processing WWS reagent 1 is carried out by mixing in the tank of a concrete mixer (ABS). Sewage sludge is supplied to the ABS tank from the sludge card by a bucket feeder moving along the bottom of the sludge card on a special chassis. When filling the ABS to the desired volume, the feeder is stopped.

30 liters of the working solution of reagent 1 per 1 ton of WWS are loaded into the ABS tank, which corresponds to 0.7 wt.% Reagent 1 per dry substance of the WWS, and mixing is carried out along the route to the technological site until a homogeneous mass is formed.

The technological site has a waterproofing base and is equipped around the perimeter with a drainage ditch for collecting drains. Clamps formed by a height of 1 meter are treated by sprinkling with a working solution of reagent 2. The consumption of a working solution of reagent 2 is 15 l / m ² , which corresponds to 0.05 liters of reagent 2 per 1 ton of dry WWS. Then the collars with double repetition using a grader are turned over. The shoulder prepared in this way is covered with a plastic film with the ends embedded in the embankment elements.

The process is monitored by measuring the temperature inside the collar with a frequency of 1 time per day. In this case, the temperature difference inside the collar during the course of the biochemical detoxification process and the ambient temperature should be at least 5 ° C and can reach 50 ° C.

The control of the number of microorganisms is carried out after 3 days after the formation of the shoulder and then every ten days, until the end of the process.

The planned duration of the process is from 15 to 90 days (depending, for example, on the ambient temperature at different times of the year).

WWS processing according to option 2

Wastewater sludge is transported from the sludge map to the technological site by a dump truck on the Kamaz chassis, loading of WWS is carried out by an excavator. Clamps formed by a height of 1 meter are treated by sprinkling with a working solution of reagent 2. The consumption of a working solution of reagent 2 is 15 l / m ² , which corresponds to 0.05 liters of reagent 2 per 1 ton of dry WWS. Then the collars with a height of 1 m with a double repetition using a grader are turned over. The shoulder prepared in this way is covered with a plastic film with the ends embedded in the embankment elements.

Tables 2, 3 respectively show the chemical, bacteriological, and parasitological characteristics of the sewage sludge of MUF Uvododokanal before and after treatment: according to option 1 (sequential treatment with EcoOrganika and UV-1 fermentation accelerator) and according to option 2 (treatment with accelerator fermentation UV-1).

It has been reliably established and substantially that after processing the WWS carried out according to option 1, i.e. by the proposed method, - there was a decrease in the risk of waste - sewage sludge - for the environment in terms of the content of heavy metals, petroleum products and benzo (a) pyrene (Table 2, column 6), as well as its disinfection regarding the presence of pathogenic microflora, helminth eggs (table 3, column 5).

Reducing the danger of the final product of the disposal of WWS by the proposed method is achieved due to changes in a whole range of characteristics of the initial waste, including due to:

- stabilization of the organogenic component, as evidenced by indicators of COD _bih and BOD ₅ and their ratio of COD _bih / BOD ₅ (Table 2, lines 23);

- reducing the content of the mobile form of cadmium and zinc (table 2, lines 23, 24);

- accelerated destruction of petroleum products and decomposition of benzo (a) pyrene (Table 2, lines 30, 31).

As you can see, neither the treatment of WWS with one humic reagent (i.e., according to the prototype - Table 2, column 5), nor the treatment of WWS with the preparation of biologically active microorganisms (Table 2, column 7) gives the results of the sequential treatment of WWS with the humic reagent described above and a preparation of biologically active microorganisms (Table 2, column 6), that is, indeed, the properties of a consortium of biologically active microorganisms were revealed not only to disinfect sewage sludge from pathogenic microflora and helminth eggs, but also to participate in processes with tabulation of the organogenic component of the WWS (for example, Table 2, line 23); disposal of WWS from inorganic toxicants - salts of heavy metals (for example, Table 2, lines 23, 24) and organic toxicants - hydrocarbons of oil, oil products, benzo (a) pyrene (for example, Table 2, lines 30, 31).

table 2 Chemical characteristics of WWS before neutralization and after neutralization according to option 1 and option 2 No. p / p Name of indicator / component Unit. Content before neutralization after neutralization Option 1 Option 2 Reagent 1 - EcoOrganics Reagent 2 - UV-1 Reagent 2 - UV-1 one 2 3 four 5 6 7 one Humidity % 70.0 53.1 52.8 52.1 2 COD _Bih mg / dm ³ 1240.0 1,100.0 389.0 1,080.0 3 BOD ₅ mg / dm ³ 410.0 302.0 179.0 282.0 four pH water units pH 6.7 6.9 7.5 7.0 5 Calcium oxide % 9.44 9.87 9.16 9.87 6 Magnesium oxide % 0.34 0.34 0.34 0.33 7 Silica % 10.76 10.55 10.47 10.50 8 Aluminium oxide % 1.76 1.77 1.77 1.80 9 Titanium oxide % 0.36 0.36 0.38 0.36 10 Barium oxide % 0.13 0.12 0.12 0.11 eleven Organic matter % 44,2 48,2 49.0 45.5 12 Nitrate nitrogen mg / kg 5956.0 2650.0 1382.0 2428.0 13 Phosphorus (in terms of P ₂ O ₅ ) mg / kg 15315.0 13,160.0 12071.0 13653.0 fourteen Potassium oxide % 0.65 0.63 0.61 0.65 fifteen Chloride ion % 0.003 0.003 0.003 0.003 16 Sulfate ion mg / kg 3174.0 2920.0 2222.0 2806,0 17 Sodium mg / kg 126.0 123.0 115.0 120.0 eighteen Vanadium mg / kg 17.5 16,0 13.0 14.0 19 Mercury mg / kg 0.14 0.13 0.12 0.12 twenty Arsenic mg / kg 0.78 0.44 0.30 0.44 21 Iron (mobile form) mg / kg 22.0 9.0 9.5 8.0 22 Manganese (mobile form) mg / kg 40,0 31,0 14.0 25.0 23 Cadmium (mobile form) mg / kg 4,5 2.0 <0.05 2.1 24 Zinc (mobile form) mg / kg 157.0 109.0 8.3 109.0 25 Lead (mobile form) mg / kg <0.1 <0.1 <0.1 <0.1 26 Copper (mobile form) mg / kg 6.4 6.0 4.0 6.0 27 Nickel (mobile form) mg / kg 5,0 4.0 2.0 4.0 28 Chrome (mobile form) mg / kg 1,0 0.9 0.7 0.9 29th Cobalt (mobile form) mg / kg <0.1 <0.1 <0.1 <0.1 thirty Oil products mg / kg 2200.0 500,0 <0.05 300,0 31 Benz (a) pyrene mg / kg 0,052 0.019 0.007 0.017

Table 3 Bacteriological and parasitological characteristics of the WWS according to example 1 The name of indicators Unit. WWS before processing WWS after treatment with Humates "EcoOrganics" WWS after sequential treatment with Humates "EcoOrganics" and UV-1 one 2 3 four 5 Total number of microorganisms CFU / g 4 · 10 ⁵ 3 · 10 ⁵ 2 · 10 ⁷ The presence of Escherichia coli bacteria CFU / g 800 500 Not detected The presence of pathogenic microorganisms, including salmonel CFU / g Not detected Not detected Not detected The presence of helminth eggs and cysts ind./kg 10-20 2-5 Not detected intestinal pathogenic protozoa

Example 2

Option 3 - according to the claimed method.

Detoxification of sewage sludge from the municipal sewage treatment plant of Municipal Unitary Enterprise “Ufavodokanal” obtained by dehydration on silt maps to a moisture content of 70% by sequential treatment with a humic reagent (reagent 3) and a consortium of biologically active microorganisms (reagent 4).

Option 4 - for comparison with the claimed method.

Detoxification of sewage sludge from municipal sewage treatment plants of Municipal Unitary Enterprise “Ufavodokanal”, obtained by dehydration on silt maps to a moisture content of 70%, was carried out by treatment with a consortium of biologically active microorganisms (reagent 4).

As humic reagent 3 used Humate-80 grade A, manufactured in accordance with TU 2189-001-71788256-2005. The main active ingredient of the drug is a mixture of physiologically active potassium and sodium salts of humic acids (table 4).

Table 4 Characteristics of Humate-80 grade A Name of indicator Characteristics 1. Appearance, color Powder, granules, tablets, black 2. Mass fraction of active substance (mixture of potassium and sodium salts of humic acids),%, on dry matter, not less than 78 3. Mass fraction of potassium, sodium% in terms of dry matter, not less four 4. Mass fraction of insoluble residue,%, no more 20.5 5. Acidity: an indicator of the activity of hydrogen ions (pH) of a 0.01% aqueous solution, not more than 10,2 6. Mass fraction of water,%, no more twenty 7. Mass concentration of impurities of toxic elements, mg / kg, not more than Lead 32 Cadmium 1,0 Arsenic 2.0 Mercury 2.1 8. Mass concentration of benzo (a) pyrene, mg / kg, less 0.02 9. The specific activity of technogenic radionuclides, relative units, not more than 1,0

The drug (consortium) of biologically active microorganisms used the drug "Tamir" - an aqueous solution containing a complex of beneficial natural microorganisms, which includes lactic acid, photosynthetic, nitrogen-fixing bacteria, yeast and saprophytic microorganisms that contribute to the accelerated decomposition of organics. The preparation is made in accordance with TU 9291-00152420326-2003, it is used for accelerated processing of animal waste into safe fertilizers. 1 cm ^{3 of the} preparation contains at least 2 · 10 ⁸ CFU (colony forming units) of living microorganisms.

In the process of biochemical reactions accompanying the vital activity of microorganisms, the organic part of the WWS decomposes, pathogenic microflora is suppressed, helminths and protozoa are destroyed, and sewage sludge is stabilized.

Preparation of working solutions

A working solution of reagent 3 is prepared at the rate of 1.5 kg of Humate-80 per 10 liters of non-chlorinated water in a 30-liter tank with a mixing device (preventing overmoistening of WWS). After vigorous stirring for 10 minutes, the working solution is settled and filtered through a filter.

The working solution of reagent 4 is prepared at the rate of 1 liter of the Tamir preparation per 50 liters of non-chlorinated water (prevention of overmoistening of WWS).

WWS processing according to option 3

Processing WWS reagent 3 is carried out by mixing in the tank of a concrete mixer (ABS). Sewage sludge is supplied to the ABS tank from the sludge card by a bucket feeder moving along the bottom of the sludge card on a special chassis.

When filling the ABS to the desired volume, the feeder is stopped.

30 liters of the working solution of the reagent 3 per 1 ton of WWS are loaded into the ABS tank, which corresponds to 1.5 wt% on the dry matter of the WWS, and mixing is carried out along the route to the technological site until a homogeneous mass is formed.

The technological site has a waterproofing base and is equipped around the perimeter with a drainage ditch for collecting drains. The collars formed by a height of 1 meter are processed by sprinkling with a working solution of reagent 4. The consumption of the working solution of the preparation is 5 l / m ² , which corresponds to 0.3 liters of the Tamir preparation per 1 ton of dry WWS. Then the collars with double repetition using a grader are turned over. The shoulder prepared in this way is covered with a plastic film with the ends embedded in the embankment elements.

The process is monitored by measuring the temperature inside the collar with a frequency of 1 time per day. In this case, the temperature difference inside the collar during the course of the biochemical detoxification process and the ambient temperature should be at least 5 ° C and can reach 50 ° C.

The control of the number of microorganisms is carried out after 3 days after the formation of the shoulder and then every ten days, until the end of the process.

The planned duration of the process is from 15 to 90 days.

WWS processing according to option 4

Wastewater sludge is transported from the sludge map to the technological site by a dump truck on the Kamaz chassis, loading of WWS is carried out by an excavator. The collars formed by a height of 1 meter are processed by sprinkling with a working solution of reagent 4. The consumption of the working solution of the preparation is 5 l / m ² , which corresponds to 0.3 liters of the Tamir preparation per 1 ton of dry WWS. Then the collars with double repetition using a grader are turned over. The shoulder prepared in this way is covered with a plastic film with the ends embedded in the embankment elements.

Tables 5, 6 respectively show the chemical, bacteriological and parasitological characteristics of the sewage sludge of MUF “Ufavodokanal” before and after treatment: according to option 3 (after sequential treatment with reagent 3 with “Humat-80” and reagent 4 with “Tamir” ) and option 4 (after treatment with reagent 4 - the drug "Tamir").

It is significant that after WWS treatment carried out according to option 3, there was a reduction in the risk of waste - sewage sludge - for the environment (table 5, column 6), its disinfection in terms of the presence of pathogenic microflora, helminth eggs (table 6, column 5) .

Reducing the risk of the recommended final product of WWS neutralization as an insulating material by the proposed method is achieved due to a change in a whole range of characteristics of the initial waste, including due to:

- stabilization of the organogenic component, as evidenced by indicators of COD _bih and BOD ₅ and their ratio of COD _bih / BOD ₅ (Table 5, lines 23),

- reducing the content of the mobile form of cadmium and zinc (table 5, lines 23, 24),

- accelerated destruction of petroleum products and decomposition of benzo (a) pyrene (Table 5, lines 30, 31).

Table 5 Chemical characteristics of WWS before neutralization and after neutralization according to option 3 and option 4 No. p / p Name of indicator / component Unit. Content before disposal after neutralization Option 3 Option 4 Reagent 3 - Humate-80 Reagent 4 - "Tamir" Reagent 4 - "Tamir" one 2 3 four 5 6 7 one Humidity % 70.0 48.3 49.7 50.6 2 COD _Bih. mg / dm ³ 1240.0 1030.0 490.0 950.0 3 BOD ₅ mg / dm ³ 410.0 302.0 179.0 282.0 four pH water units pH 6.7 7.0 6.8 7.2 5 Calcium oxide % 9.44 9.52 9.55 9.61 6 Magnesium oxide % 0.34 0.33 0.33 0.33 7 Silica % 10.76 10.75 10.74 10.68 8 Aluminium oxide % 1.76 1.76 1.76 1.76 9 Titanium oxide % 0.36 0.36 0.36 0.36 10 Barium oxide % 0.13 0.13 0.13 0.11 eleven Organic matter % 44,2 46.1 46.2 45.9 12 Nitrate nitrogen mg / kg 5956.0 3350.0 3420.0 3450.0 13 Phosphorus (in terms of P ₂ O ₅ ) mg / kg 15315.0 12,890.0 13,160.0 13,250.0 fourteen Potassium oxide % 0.65 0.64 0.63 0.63 fifteen Chloride ion % 0.003 0.003 0.003 0.003 16 Sulfate ion mg / kg 3174.0 3030,0 2980.0 2920.0 17 Sodium mg / kg 126.0 120.0 120.0 121.0 eighteen Vanadium mg / kg 17.5 17.0 16,0 16,0 19 Mercury mg / kg 0.14 0.12 0.12 0.12 twenty Arsenic mg / kg 0.78 0.52 0.55 0.50 21 Iron (mobile form) mg / kg 22.0 8.1 8.2 8.2 22 Manganese (mobile form) mg / kg 40,0 29.0 22.0 23.0 23 Cadmium (mobile form) mg / kg 4,5 1.7 <0.05 1.9 24 Zinc (mobile form) mg / kg 157.0 105.0 11.6 99.0 25 Lead (mobile form) mg / kg <0.1 <0.1 <0.1 <0.1 26 Copper (mobile form) mg / kg 6.4 6.2 5.9 5.9 27 Nickel (mobile form) mg / kg 5,0 4,5 2.2 3.8 28 Chrome (mobile form) mg / kg 1,0 1,0 0.8 0.8 29th Cobalt (mobile form) mg / kg <0.1 <0.1 <0.1 <0.1 thirty Oil products mg / kg 2200.0 450,0 <0.05 250,0 31 Benz (a) pyrene mg / kg 0,052 0,027 0.012 0,022

Table 6 Bacteriological and parasitological characteristics of the WWS according to example 2 The name of indicators Unit. WWS before processing WWS after treatment with humates Gumat-80 WWS after treatment with humates Gumat-80 and Tamir one 2 3 four 5 Total number of microorganisms CFU / g 4 · 10 ⁵ 3 · 10 ⁵ 2 · 10 ⁷ The presence of Escherichia coli bacteria CFU / g 800 500 Not detected The presence of pathogenic microorganisms, including salmonel CFU / g Not detected Not detected Not detected The presence of helminth eggs and cysts of intestinal pathogenic protozoa ind./kg 10-20 2-5 Not detected

As you can see, neither the treatment of WWS with one humic reagent (i.e., according to the prototype - Table 5, column 5), nor the treatment with WWS with the preparation of biologically active microorganisms (Table 5, column 7) gives the results of the sequential treatment of WWS with the humic reagent described above and a preparation of biologically active microorganisms (Table 5, column 6), that is, indeed, the properties of a consortium of biologically active microorganisms were revealed not only to disinfect sewage sludge from pathogenic microflora and helminth eggs, but also to participate in processes with tabulation of the organogenic component of WWS (for example, Table 5, lines 2, 3); disposal of WWS from inorganic toxicants - salts of heavy metals (for example, Table 5, lines 23, 24) and organic toxicants - hydrocarbons of oil, oil products, benz (a) pyrene (for example, Table 5, lines 30, 31).

From tables 2, 3, 5, 6 it follows that in the case of the proposed integrated treatment, the best results are obtained detoxification of sewage sludge and its disposal. Therefore, the product of such complex processing is recommended by the applicant for use as a stabilized insulating material for landfills for household and industrial waste, which does not decay and does not produce an unpleasant odor.

The product - insulation material meets the requirements of environmental protection, including in terms of its sanitary-bacteriological and parasitological indicators (GOST R 17.4.3.07-2001).

In contrast to the prototype, where the applicability of the obtained product for the disposal of WWS as an insulating material at the landfill for household and industrial waste is justified only by an increase in filtration resistance, the product is an insulating material obtained by the proposed method is stabilized (inert) in terms of biochemical oxygen consumption and chemical consumption oxygen, which meets the hygienic requirements for the placement and disposal of production and consumption waste (SanPiN 2.1.7.1322-03 ) and Instructions for the design, operation and reclamation of landfills for municipal solid waste (Decree of the Ministry of Construction of Russia from 11/05/1996).

Claims (1)

The method of obtaining insulating material for landfills for household and industrial waste by detoxification of sewage sludge with a humic reagent, taken in an amount of from 0.3 wt.% To 10.0 wt.% On dry matter of sewage sludge, characterized in that it further detoxification product sewage sludge with a humic reagent is treated with a preparation of microorganisms for biodegradation and neutralization of manure and litter “Fermentation Accelerator UV-1” or with a preparation of biologically active microorganisms for accelerated processing of animal moves "Tamir" taken in an amount of from 0.05 liters to 1.00 liters per ton of dry matter of sewage sludge.