A kind of cultivation method of anaerobic activated sludge

A cultivation method and oxygen activity technology, which is applied in the field of anaerobic activated sludge cultivation, can solve the problems of long cultivation time, low degree of granulation of anaerobic activated sludge, high cost of sludge cultivation, etc., so as to improve the degree of granulation Effect

Inactive Publication Date: 2017-05-31
陕西惠瑞环保科技工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem mainly solved by the present invention: Aiming at the problems that the granulation degree of anaerobic activated sludge is not high, the cultivation time is relatively long, there is a large amount of flocculent sludge, and the sludge cultivation cost is high, an anaerobic activated sludge is provided The cultivation method of the present invention, the present invention uses diatomaceous earth to carry out pickling, alkali leaching, filter residue is dried, pulverized into granule, with dead fish, dead shrimp, carry out steaming, filter after removing solid, add sodium lactate, yeast extract in the filtrate Finally, it is mixed with the filter residue and diatomite particles, poured into the fermentation tank, and then add manure, datura, and ghost needle grass to it, stir and mix, carry out sealed fermentation, and feed nitrogen, and get blackened after the fermentation is completed. Sticky matter, that is, anaerobic activated sludge

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0016] First take 5kg of diatomite, first soak the diatomite with hydrochloric acid with a mass fraction of 60%, rinse with distilled water and then soak with 40% sodium hydroxide solution, soak for 20min and then filter, soak the filter residue in clean water Put it into an ultrasonic cleaner, ultrasonically clean it for 5 minutes, filter after cleaning, put the filter residue in a vacuum drying furnace, keep the vacuum degree at 50Pa, dry at 70°C, dry for 40min, and crush it with a pulverizer after drying Grind into 70-mesh granules and keep them for later use; collect 1kg of rotten and smelly dead fish and shrimps, put them into a steamer, add 500mL of water into the pot, put them on a heating furnace and cook them at 100°C for 30min, Remove the fish bones, filter with 300-mesh gauze after cooking to obtain filter residue and filtrate, add 5g of sodium lactate and 10g of yeast extract to the filtrate, stir until dissolved; add the above-mentioned fish and shrimp filter resid...

example 2

[0019] First take 6kg of diatomite, first soak the diatomite with hydrochloric acid with a mass fraction of 65%, rinse with distilled water and then soak with 40% sodium hydroxide solution, soak for 25min and then filter, soak the filter residue in clean water and put it into an ultrasonic cleaner, ultrasonically clean it for 8 minutes, filter after cleaning, put the filter residue in a vacuum drying furnace, keep the vacuum degree at 55Pa, dry at a temperature of 73°C, dry for 50min, and pulverize it with a pulverizer after drying Grind into 75-mesh granules and keep them for later use; collect 1.5kg of rotten and smelly dead fish and shrimps, put them into a steamer, add 600mL of water to the pot, put them on a heating furnace and cook at 110°C for 35min , remove the fish bones, filter with 400 mesh gauze after cooking to get the filter residue and filtrate, add 8g of sodium lactate and 13g of yeast extract to the filtrate, stir until dissolved; respectively add the above fis...

example 3

[0022]First take 7kg of diatomite, first soak the diatomite with 70% hydrochloric acid by mass fraction, rinse with distilled water and then soak it with 40% mass fraction sodium hydroxide solution, soak for 30min and then filter, soak the filter residue in clear water Put it into an ultrasonic cleaner, ultrasonically clean it for 10 minutes, filter after cleaning, put the filter residue in a vacuum drying furnace, keep the vacuum degree at 60Pa, dry at a temperature of 75°C, dry for 60 minutes, and crush it with a pulverizer after drying Grind into 80-mesh granules and keep them for later use; collect 2kg of rotten and smelly dead fish and shrimps, put them into a steamer, add 700mL of water to the pot, and steam them on a heating furnace at 120°C for 40min. Remove the fish bones, filter with 500-mesh gauze after cooking to obtain filter residue and filtrate, add 10g of sodium lactate and 15g of yeast extract to the filtrate, and stir until dissolved; add the above-mentioned f...

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Abstract

The invention discloses a culture method of anaerobic activated sludge, belonging to the field of activated sludge. The culture method comprises the steps of pickling diatomite, carrying out alkaline leaching, and smashing the diatomite into particles; cooking dead fishes and shrimps, and mixing the dead fishes and shrimps, filter residues and diatomite after adding sodium lactate and a yeast extract; pouring the mixture into a fermentation tank; then, adding dung water, mandala and sticktight into the fermentation tank; and fermenting in a sealing way after stirring and mixing, and introducing nitrogen gas to obtain a nigrescent viscous material, namely the anaerobic activated sludge after ending fermentation. Through the pickling and alkaline leaching of the diatomite, the granulation degree of the sludge is improved; due to the utilization of the smelly dead fishes and shrimps as well as pork, the sludge is rich in a great number of microorganisms, so that the wastewater can be effectively treated, and the removal rate of COD in the wastewater is up to more than 50%.

Description

technical field [0001] The invention discloses a method for cultivating anaerobic activated sludge, which belongs to the field of activated sludge. Background technique [0002] The basic concept of activated sludge was discovered by Clark and Gage in England in 1912. They aerate the sewage for a long time to produce sludge, and the water quality will be significantly improved. The aeration test was carried out in a bottle. The bottle was emptied at the end of the test every day and restarted the next day. They accidentally found that the treatment effect was better when the bottle was not cleaned properly and the sludge was attached to the wall of the bottle. Because they recognized the importance of leaving sludge on the bottle wall, they called it activated sludge. Then, before the end of the test every day, the aerated sewage was still settled, and only the upper layer of purified water was poured, leaving the sludge at the bottom of the bottle for the next day's use, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/28
Inventor 王智
Owner 陕西惠瑞环保科技工程有限公司
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