CN105457063A - Method for preparing compound air purifying agent from secondary settling tank sludge of urban domestic sewage treatment plant - Google Patents

Abstract

The invention discloses a method for preparing a compound air purifying agent from secondary settling tank sludge of an urban domestic sewage treatment plant, and belongs to the field of preparation of air purifying agents. The method comprises the steps that urban sludge is taken, pH is adjusted, a hydrogen peroxide solution and catalase are added and mixed, water-bath heating is conducted after ultrasonic oscillating is conducted, sealing protection is conducted, and then vacuum filtration is conducted when a mixture is hot; filtered matter is air-dried, pH is adjusted, stirring mixing is conducted on the treated filtered matter and substances such as peptone, ferric sulfate and carboxymethylcellulose, the obtained mixture is poured into a bamboo pole, the two ends of the bamboo pole are sealed, standing is conducted, air-drying is conducted, the mixture is extruded into blocks, calcined, cooled and ground into particles, one half of the particles are put into the bamboo pole, a mixture prepared from substances such as alocasia macrorrhiza and epipremnum aureum, the other half of the particles is added into the bamboo pole, water is added, sealing is conducted, a power supply is switched on, baking is conducted through mild fire, a product is taken out and ground into particles, and the air purifying agent is obtained. The method for preparing the compound air purifying agent from the secondary settling tank sludge of the urban domestic sewage treatment plant has the advantages that the sludge is fully utilized for preparing the air purifying agent, pollution of the sludge to the environment is solved, sustainable utilization of resources is achieved, and the product is safe and environmentally friendly.

Description

A kind of method utilizing city domestic sewage treatment plant second pond mud to prepare composite air purifying agent

Technical field

The present invention relates to a kind of method utilizing city domestic sewage treatment plant second pond mud to prepare composite air purifying agent, belong to air purifying preparation preparation field.

Background technology

Mud is the inevitable outcome of sewage treatment plant and sewage disposal.It is estimated, the sludge quantity that China produces every year is 3,000,000 tons, and annual rate of growth is greater than 10%, if domestic municipal sewage is all processed, then will produce mud dry weight about 8,400,000 tons every year, account for 0.2% of China's solid waste total amount, even if in the higher several city of Chinese Urbanization level and area, sludge handling problem is also very outstanding.Without after the mud entered environment that appropriate process is disposed, bring secondary pollution directly to water body and air, not only reduce the effective processing capacity of sewage disposal system, and serious threat is constituted to the activity of ecological environment and the mankind.The main Environmental Problems existed has: moisture percentage in sewage sludge is high, and non-dewatered sludge moisture content is greater than 90%, and preliminary hydro-extraction moisture percentage in sewage sludge, also up to 80%, causes the problems such as cost of transportation is high, stacking area is large, pressing waste landfill yard storage capacity, blocking percolate pipe; Not only cause visual pollution, and provide place for growing of other harmful organisms; Sludge is placed on and outdoorly gives out foul smell and abnormal flavour, and Exposure to Sunlight wind blows, and contaminant particle can cause atmospheric pollution; Through water soaking, dissolving, pollutant flow into river course with sewage, and meeting polluted surface water, enters subsoil water; Containing heavy metal, if do not controlled, then may contaminated land.

The processing method of common municipal sludge has sludge incineration, sludge composting and Sludge landfill, burning method adopts fluidized bed incinerator process, although can bed mud be made to subtract appearance rapidly and largely, memory device is not needed under atrocious weather condition, but in combustion, a part of heavy metal of mud is diffused in air with flue dust, also can produce carcinogen bioxin, the device removing bioxin need be configured, not only pollute environment, capital expenditure needed for it and operating cost are also higher, complex operation; The method of sludge composting is deep not enough in China's research, owing to effectively can not remove heavy metal in mud and harmful substance, heavy metal ion, easily at soil and plant cylinder accumulation, makes the pollution that soil is subject in various degree, have larger risk, security performance is low, investment is difficult to reclaim; Sludge landfill cost of investment is comparatively large, and operating cost is high, needs special landfill yard, requires higher to antiseepage and landfill operation, and as run accidentally, mud Leachate site will cause secondary pollution to soil and subsoil water, poor controllability.Therefore work out that a kind of operating cost is low, simple to operate, security performance is high, controllability is strong, the method for sludge treatment of environmentally safe, both took into account environmental ecological benefit, and taken into account again Social benefit and economic benefit.

Summary of the invention

Technical problem to be solved by this invention: pile up for municipal sludge, burn, landfill disposal, operating cost is high and take a large amount of land resource, cause Treatment of Sludge security performance low, poor controllability, environment is easily caused to the drawback of secondary pollution, provide a kind of method utilizing city domestic sewage treatment plant second pond mud to prepare composite air purifying agent, the present invention gets municipal sludge to regulate pH, mix with hydrogenperoxide steam generator and catalase, heating in water bath after sonic oscillation, filtration under diminished pressure again, by filtrate dry in the sun, with peptone after adjustment pH, iron sulfate, the materials such as carboxymethyl cellulose are uniformly mixed, pour in bamboo pole, sealing bamboo pole two ends, air-dry extruding in bulk after leaving standstill, calcining cooling crush becomes granule, half granule is put into thick bamboo tube, then dripping guanyin is added, Epipremnum aureum (Linde et Andre) (Bunting.), the mixture that the materials such as Radix et Caulis Opuntiae Dillenii are obtained, add second half granule again in thick bamboo tube, be energized after adding water-stop, slow fire toasts, taking-up is ground into granule and obtains.Preparation method of the present invention is simple, makes full use of municipal sludge and prepares air purifying preparation, both solved the pollution of mud to environment, achieved again the sustainable use of resource.

For solving the problems of the technologies described above, the present invention adopts technical scheme as described below to be:

(1) get 1 ~ 3kg city domestic sewage treatment plant second pond mud and put into container, service property (quality) mark be 60% sodium hydroxide solution regulate pH be 8.0 ~ 8.5, adding 800 ~ 1200mL mass fraction is more wherein 30% hydrogenperoxide steam generator and 100 ~ 200g catalase, mix homogeneously, then by container as in ultrasonic wave concussion device, frequency configuration is 20 ~ 30KHz, concussion 20 ~ 30min, again container is heated it as in water-bath, temperature is set as 60 ~ 70 DEG C, agitating heating 30 ~ 50min, use nitrogen to carry out seal protection to container simultaneously,

(2) after above-mentioned heating terminates, filtration under diminished pressure while hot, by the filtrate natural drying of gained, until its water content lower than 5% time, dried filtrate is mixed by solid-to-liquid ratio 2:1 with natural pond liquid, then service property (quality) mark is the hydrochloric acid solution adjustment pH of 30% is 6.0 ~ 6.5, add 100 ~ 200g peptone wherein again, 80 ~ 160g iron sulfate, 20 ~ 30g carboxymethyl cellulose, 130 ~ 240g glucose and 300 ~ 340mL mass fraction are the sodium chloride solution of 25%, stir, obtain mixture, subsequently mixture is poured in fresh bamboo pole, again with ceramic membrane sealing bamboo pole two ends, being placed on temperature is under the environment of 30 ~ 35 DEG C, leave standstill 10 ~ 15 days,

(3) after above-mentioned standing end, mixture in bamboo pole is poured into carry out in air-dry machine air-dry, again the mixture after air-dry is put into extruder and carry out extruding in bulk, then block is put into calcining furnace, at temperature is 600 ~ 800 DEG C, after calcining 4 ~ 8h, be cooled to room temperature, put it in pulverizer and pulverize, cross standard screen, obtain 80 ~ 100 order granules;

(4) count by weight, get 20 ~ 30 parts of dripping guanyins, 25 ~ 30 parts of Epipremnum aureum (Linde et Andre) (Bunting.)s, 15 ~ 25 parts of Radix et Caulis Opuntiae Dilleniis, 10 ~ 15 parts of white palms and 10 ~ 20 parts of Cortex schefflerae octophyllae mix homogeneously, obtain mixture, then the granule of above-mentioned gained is divided into two parts by quality, get mixture again, the amount got is 1/2nd of granular mass, get a particulate matter and put into fresh thick bamboo tube, add mixture wherein again, subsequently other a particulate matter is put into thick bamboo tube, in thick bamboo tube, add water, make its water content be 5 ~ 10%, use reverse osmosis membrane to be sealed at two ends;

(5) above-mentioned thick bamboo tube is energized, makes its magnitude of current be 10 ~ 15mA, use in the middle of slow fire baking thick bamboo tube simultaneously, baking 18 ~ 20h, then takes out the granule in thick bamboo tube, puts into pulverizer and pulverize, cross standard screen, obtain 50 ~ 80 order granules, composite air purifying agent.

Application process of the present invention: be placed on by obtained composite air purifying agent in the space of needs purification, the amount of putting into is 0.05 ~ 0.1mg/m ², the airtight space 24 ~ 36h that need purify, abnormal flavour is removed, and produces, use safety, environmental protection without other harmful substances, effective.

The present invention is compared with additive method, and Advantageous Effects is:

(1) make full use of mud and prepare air purifying preparation, both solved mud to the secondary pollution of environment with take the problems such as a large amount of soils, achieved again sustainable, the rational utilization of resource;

(2) method for sludge treatment of the present invention is simple, and controllability is good, products obtained therefrom safety, environmental protection, practical.

Detailed description of the invention

First get 1 ~ 3kg city domestic sewage treatment plant second pond mud and put into container, service property (quality) mark be 60% sodium hydroxide solution regulate pH be 8.0 ~ 8.5, adding 800 ~ 1200mL mass fraction is more wherein 30% hydrogenperoxide steam generator and 100 ~ 200g catalase, mix homogeneously, then by container as in ultrasonic wave concussion device, frequency configuration is 20 ~ 30KHz, concussion 20 ~ 30min, again container is heated it as in water-bath, temperature is set as 60 ~ 70 DEG C, agitating heating 30 ~ 50min, use nitrogen to carry out seal protection to container simultaneously, after above-mentioned heating terminates, filtration under diminished pressure while hot, by the filtrate natural drying of gained, until its water content lower than 5% time, dried filtrate is mixed by solid-to-liquid ratio 2:1 with natural pond liquid, then service property (quality) mark is the hydrochloric acid solution adjustment pH of 30% is 6.0 ~ 6.5, add 100 ~ 200g peptone wherein again, 80 ~ 160g iron sulfate, 20 ~ 30g carboxymethyl cellulose, 130 ~ 240g glucose and 300 ~ 340mL mass fraction are the sodium chloride solution of 25%, stir, obtain mixture, subsequently mixture is poured in fresh bamboo pole, again with ceramic membrane sealing bamboo pole two ends, being placed on temperature is under the environment of 30 ~ 35 DEG C, leave standstill 10 ~ 15 days, then after above-mentioned standing end, mixture in bamboo pole is poured into carry out in air-dry machine air-dry, again the mixture after air-dry is put into extruder and carry out extruding in bulk, then block is put into calcining furnace, at temperature is 600 ~ 800 DEG C, after calcining 4 ~ 8h, be cooled to room temperature, put it in pulverizer and pulverize, cross standard screen, obtain 80 ~ 100 order granules, count by weight, get 20 ~ 30 parts of dripping guanyins, 25 ~ 30 parts of Epipremnum aureum (Linde et Andre) (Bunting.)s, 15 ~ 25 parts of Radix et Caulis Opuntiae Dilleniis, 10 ~ 15 parts of white palms and 10 ~ 20 parts of Cortex schefflerae octophyllae mix homogeneously, obtain mixture, then the granule of above-mentioned gained is divided into two parts by quality, get mixture again, the amount got is 1/2nd of granular mass, get a particulate matter and put into fresh thick bamboo tube, add mixture wherein again, subsequently other a particulate matter is put into thick bamboo tube, in thick bamboo tube, add water, make its water content be 5 ~ 10%, use reverse osmosis membrane to be sealed at two ends, finally above-mentioned thick bamboo tube is energized, makes its magnitude of current be 10 ~ 15mA, use in the middle of slow fire baking thick bamboo tube simultaneously, baking 18 ~ 20h, then takes out the granule in thick bamboo tube, puts into pulverizer and pulverize, cross standard screen, obtain 50 ~ 80 order granules, composite air purifying agent.

Example 1

First get 1kg city domestic sewage treatment plant second pond mud and put into container, service property (quality) mark be 60% sodium hydroxide solution regulate pH be 8.0, adding 800mL mass fraction is more wherein 30% hydrogenperoxide steam generator and 100g catalase, mix homogeneously, then by container as in ultrasonic wave concussion device, frequency configuration is 20KHz, concussion 20min, again container is heated it as in water-bath, temperature is set as 60 DEG C, agitating heating 30min, uses nitrogen to carry out seal protection to container simultaneously, after above-mentioned heating terminates, filtration under diminished pressure while hot, by the filtrate natural drying of gained, until its water content lower than 5% time, dried filtrate is mixed by solid-to-liquid ratio 2:1 with natural pond liquid, then service property (quality) mark is the hydrochloric acid solution adjustment pH of 30% is 6.0, add 100g peptone wherein again, 80g iron sulfate, 20g carboxymethyl cellulose, 130g glucose and 300mL mass fraction are the sodium chloride solution of 25%, stir, obtain mixture, subsequently mixture is poured in fresh bamboo pole, again with ceramic membrane sealing bamboo pole two ends, being placed on temperature is under the environment of 30 DEG C, leave standstill 10 days, then after above-mentioned standing end, mixture in bamboo pole is poured into carry out in air-dry machine air-dry, again the mixture after air-dry is put into extruder and carry out extruding in bulk, then block is put into calcining furnace, at temperature is 600 DEG C, after calcining 4h, be cooled to room temperature, put it in pulverizer and pulverize, cross standard screen, obtain 80 order granules, count by weight, get 20 parts of dripping guanyins, 30 parts of Epipremnum aureum (Linde et Andre) (Bunting.)s, 20 parts of Radix et Caulis Opuntiae Dilleniis, 15 parts of white palms and 15 parts of Cortex schefflerae octophyllae mix homogeneously, obtain mixture, then the granule of above-mentioned gained is divided into two parts by quality, get mixture again, the amount got is 1/2nd of granular mass, get a particulate matter and put into fresh thick bamboo tube, add mixture wherein again, subsequently other a particulate matter is put into thick bamboo tube, in thick bamboo tube, add water, make its water content be 5%, use reverse osmosis membrane to be sealed at two ends, finally above-mentioned thick bamboo tube is energized, makes its magnitude of current be 10mA, simultaneously use slow fire baking thick bamboo tube in the middle of, baking 18h, then by thick bamboo tube granule take out, put into pulverizer and pulverize, cross standard screen, obtain 50 order granules, composite air purifying agent.

Be placed on by obtained composite air purifying agent in the space of needs purification, the amount of putting into is 0.05mg/m ², the airtight space 24h that need purify, abnormal flavour is removed, and produces, use safety, environmental protection without other harmful substances, effective.

Example 2

First get 2kg city domestic sewage treatment plant second pond mud and put into container, service property (quality) mark be 60% sodium hydroxide solution regulate pH be 8.3, adding 1000mL mass fraction is more wherein 30% hydrogenperoxide steam generator and 150g catalase, mix homogeneously, then by container as in ultrasonic wave concussion device, frequency configuration is 25KHz, concussion 25min, again container is heated it as in water-bath, temperature is set as 65 DEG C, agitating heating 40min, uses nitrogen to carry out seal protection to container simultaneously, after above-mentioned heating terminates, filtration under diminished pressure while hot, by the filtrate natural drying of gained, until its water content lower than 5% time, dried filtrate is mixed by solid-to-liquid ratio 2:1 with natural pond liquid, then service property (quality) mark is the hydrochloric acid solution adjustment pH of 30% is 6.3, add 150g peptone wherein again, 120g iron sulfate, 25g carboxymethyl cellulose, 185g glucose and 320mL mass fraction are the sodium chloride solution of 25%, stir, obtain mixture, subsequently mixture is poured in fresh bamboo pole, again with ceramic membrane sealing bamboo pole two ends, being placed on temperature is under the environment of 33 DEG C, leave standstill 13 days, then after above-mentioned standing end, mixture in bamboo pole is poured into carry out in air-dry machine air-dry, again the mixture after air-dry is put into extruder and carry out extruding in bulk, then block is put into calcining furnace, at temperature is 700 DEG C, after calcining 6h, be cooled to room temperature, put it in pulverizer and pulverize, cross standard screen, obtain 90 order granules, count by weight, get 25 parts of dripping guanyins, 28 parts of Epipremnum aureum (Linde et Andre) (Bunting.)s, 25 parts of Radix et Caulis Opuntiae Dilleniis, 12 parts of white palms and 10 parts of Cortex schefflerae octophyllae mix homogeneously, obtain mixture, then the granule of above-mentioned gained is divided into two parts by quality, get mixture again, the amount got is 1/2nd of granular mass, get a particulate matter and put into fresh thick bamboo tube, add mixture wherein again, subsequently other a particulate matter is put into thick bamboo tube, in thick bamboo tube, add water, make its water content be 8%, use reverse osmosis membrane to be sealed at two ends, finally above-mentioned thick bamboo tube is energized, makes its magnitude of current be 13mA, simultaneously use slow fire baking thick bamboo tube in the middle of, baking 19h, then by thick bamboo tube granule take out, put into pulverizer and pulverize, cross standard screen, obtain 65 order granules, composite air purifying agent.

Be placed on by obtained composite air purifying agent in the space of needs purification, the amount of putting into is 0.08mg/m ², the airtight space 30h that need purify, abnormal flavour is removed, and produces, use safety, environmental protection without other harmful substances, effective.

Example 3

First get 3kg city domestic sewage treatment plant second pond mud and put into container, service property (quality) mark be 60% sodium hydroxide solution regulate pH be 8.5, adding 1200mL mass fraction is more wherein 30% hydrogenperoxide steam generator and 200g catalase, mix homogeneously, then by container as in ultrasonic wave concussion device, frequency configuration is 30KHz, concussion 30min, again container is heated it as in water-bath, temperature is set as 70 DEG C, agitating heating 50min, uses nitrogen to carry out seal protection to container simultaneously, after above-mentioned heating terminates, filtration under diminished pressure while hot, by the filtrate natural drying of gained, until its water content lower than 5% time, dried filtrate is mixed by solid-to-liquid ratio 2:1 with natural pond liquid, then service property (quality) mark is the hydrochloric acid solution adjustment pH of 30% is 6.5, add 200g peptone wherein again, 160g iron sulfate, 30g carboxymethyl cellulose, 240g glucose and 340mL mass fraction are the sodium chloride solution of 25%, stir, obtain mixture, subsequently mixture is poured in fresh bamboo pole, again with ceramic membrane sealing bamboo pole two ends, being placed on temperature is under the environment of 35 DEG C, leave standstill 15 days, then after above-mentioned standing end, mixture in bamboo pole is poured into carry out in air-dry machine air-dry, again the mixture after air-dry is put into extruder and carry out extruding in bulk, then block is put into calcining furnace, at temperature is 800 DEG C, after calcining 8h, be cooled to room temperature, put it in pulverizer and pulverize, cross standard screen, obtain 100 order granules, count by weight, get 30 parts of dripping guanyins, 25 parts of Epipremnum aureum (Linde et Andre) (Bunting.)s, 15 parts of Radix et Caulis Opuntiae Dilleniis, 10 parts of white palms and 20 parts of Cortex schefflerae octophyllae mix homogeneously, obtain mixture, then the granule of above-mentioned gained is divided into two parts by quality, get mixture again, the amount got is 1/2nd of granular mass, get a particulate matter and put into fresh thick bamboo tube, add mixture wherein again, subsequently other a particulate matter is put into thick bamboo tube, in thick bamboo tube, add water, make its water content be 10%, use reverse osmosis membrane to be sealed at two ends, finally above-mentioned thick bamboo tube is energized, makes its magnitude of current be 15mA, simultaneously use slow fire baking thick bamboo tube in the middle of, baking 20h, then by thick bamboo tube granule take out, put into pulverizer and pulverize, cross standard screen, obtain 80 order granules, composite air purifying agent.

Be placed on by obtained composite air purifying agent in the space of needs purification, the amount of putting into is 0.1mg/m ², the airtight space 36h that need purify, abnormal flavour is removed, and produces, use safety, environmental protection without other harmful substances, effective.

Claims (1)

1. utilize city domestic sewage treatment plant second pond mud to prepare a method for composite air purifying agent, it is characterized in that concrete preparation process is:

(1) get 1 ~ 3kg city domestic sewage treatment plant second pond mud and put into container, service property (quality) mark be 60% sodium hydroxide solution regulate pH be 8.0 ~ 8.5, adding 800 ~ 1200mL mass fraction is more wherein 30% hydrogenperoxide steam generator and 100 ~ 200g catalase, mix homogeneously, then by container as in ultrasonic wave concussion device, frequency configuration is 20 ~ 30KHz, concussion 20 ~ 30min, again container is heated it as in water-bath, temperature is set as 60 ~ 70 DEG C, agitating heating 30 ~ 50min, use nitrogen to carry out seal protection to container simultaneously,

(2) after above-mentioned heating terminates, filtration under diminished pressure while hot, by the filtrate natural drying of gained, until its water content lower than 5% time, dried filtrate is mixed by solid-to-liquid ratio 2:1 with natural pond liquid, then service property (quality) mark is the hydrochloric acid solution adjustment pH of 30% is 6.0 ~ 6.5, add 100 ~ 200g peptone wherein again, 80 ~ 160g iron sulfate, 20 ~ 30g carboxymethyl cellulose, 130 ~ 240g glucose and 300 ~ 340mL mass fraction are the sodium chloride solution of 25%, stir, obtain mixture, subsequently mixture is poured in fresh bamboo pole, again with ceramic membrane sealing bamboo pole two ends, being placed on temperature is under the environment of 30 ~ 35 DEG C, leave standstill 10 ~ 15 days,

(3) after above-mentioned standing end, mixture in bamboo pole is poured into carry out in air-dry machine air-dry, again the mixture after air-dry is put into extruder and carry out extruding in bulk, then block is put into calcining furnace, at temperature is 600 ~ 800 DEG C, after calcining 4 ~ 8h, be cooled to room temperature, put it in pulverizer and pulverize, cross standard screen, obtain 80 ~ 100 order granules;

(4) count by weight, get 20 ~ 30 parts of dripping guanyins, 25 ~ 30 parts of Epipremnum aureum (Linde et Andre) (Bunting.)s, 15 ~ 25 parts of Radix et Caulis Opuntiae Dilleniis, 10 ~ 15 parts of white palms and 10 ~ 20 parts of Cortex schefflerae octophyllae mix homogeneously, obtain mixture, then the granule of above-mentioned gained is divided into two parts by quality, get mixture again, the amount got is 1/2nd of granular mass, get a particulate matter and put into fresh thick bamboo tube, add mixture wherein again, subsequently other a particulate matter is put into thick bamboo tube, in thick bamboo tube, add water, make its water content be 5 ~ 10%, use reverse osmosis membrane to be sealed at two ends;

(5) above-mentioned thick bamboo tube is energized, makes its magnitude of current be 10 ~ 15mA, use in the middle of slow fire baking thick bamboo tube simultaneously, baking 18 ~ 20h, then takes out the granule in thick bamboo tube, puts into pulverizer and pulverize, cross standard screen, obtain 50 ~ 80 order granules, composite air purifying agent.