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Preparation method of fossilized active sludge and micro-sewage treatment method

An activated sludge and sewage technology, applied in water/sludge/sewage treatment, chemical instruments and methods, biological water/sewage treatment, etc., can solve the problems of limited reproduction speed of heterotrophic bacteria and slow reproduction speed of nitrifying bacteria , to achieve the effect of simple and fast preparation process, convenient operation and simple formula

Active Publication Date: 2010-02-03
山东青素环保材料有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the nitrifying bacteria that remove ammonia nitrogen reproduce slowly, and the low concentration of organic matter also limits the reproduction speed of heterotrophic bacteria, so according to this situation, the method of embedding mixed bacteria is used to treat micro-polluted water to remove ammonia nitrogen and organic matter. purpose is feasible

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Preparation of immobilized activated sludge:

[0027] Step 1: Dissolve 18g of polyethylene glycol prepolymer in 60ml of water, add 8g of activated sludge, stir, then add 0.5g of bisacrylamide crosslinking agent and 0.05g of benzoin dimethyl ether, finally add water to 100ml, mix well , to get a solution;

[0028] Step 2: Put the solution obtained in Step 1 under the ultraviolet light source for 5 minutes to solidify; then cut the solidified activated sludge block into cube particles of 3mm×3mm×3mm, and wash them thoroughly to obtain immobilized sludge particles .

[0029] Using the prepared immobilized sludge to treat sewage:

[0030] Step 1, fill the prepared embedding particles in an upflow aerated circulation reactor with a volume ratio of 10%, aerate and domesticate for 15 days (DO is 4mg / l), and use 40mg / l ammonia nitrogen organic wastewater during domestication ;

[0031] Step 2, respectively process 40g / l and 10mg / l ammonia nitrogen organic solutions.

[003...

Embodiment 2

[0034] Preparation of immobilized activated sludge:

[0035] Step 1: Dissolve 140g of polyethylene glycol prepolymer in 600ml of water, add 60g of activated sludge, stir, then add 5g of bisacrylamide cross-linking agent and 1g of benzoin dimethyl ether, and finally add water to 1000ml, mix well to obtain solution;

[0036] Step 2: Put the solution obtained in Step 1 under the ultraviolet light source for 4 minutes to solidify; then cut the solidified activated sludge block into cube particles of 3mm×3mm×3mm, and wash them thoroughly to obtain immobilized sludge particles .

[0037] Using the prepared immobilized sludge to treat sewage:

[0038] Step 1, fill the prepared embedding particles in an upflow aerated circulation reactor with a volume ratio of 10%, aerate and domesticate for 10 days (DO is 6mg / l), and use 40mg / l of ammonia nitrogen organic wastewater during domestication ;

[0039] In step 2, the ammonia nitrogen organic solutions of 40 mg / l and 10 mg / l are proces...

Embodiment 3

[0041] Preparation of immobilized activated sludge:

[0042] Step 1, dissolve 50g of polyethylene glycol prepolymer in 300ml of water, add 16g of activated sludge, stir, then add 5g of bisacrylamide crosslinking agent and 0.5g of benzoin dimethyl ether, finally add water to 500ml, mix well, get solution;

[0043] Step 2: Put the solution obtained in Step 1 under the ultraviolet light source for 3.5 minutes to solidify; then cut the solidified activated sludge block into cube particles of 3 mm × 3 mm × 3 mm, and wash them thoroughly to obtain immobilized sludge particles .

[0044] Using the prepared immobilized sludge to treat sewage:

[0045] Step 1, fill the prepared embedding particles in an upflow aerated circulation reactor with a volume ratio of 10%, aerate and acclimatize for 15 days (DO is 5mg / l), and use 40mg / l ammonia nitrogen organic wastewater during acclimatization ;

[0046] In step 2, the ammonia nitrogen organic solutions of 40 mg / l and 10 mg / l are processed ...

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Abstract

The invention relates to a preparation method of fossilized active sludge and a micro-sewage treatment method in the technical field of environmental protection. The preparation method of fossilized active sludge comprises the following steps: dissolving a polyethylene glycol prepolymer in water; adding active sludge and stirring; then, adding a bis-acrylamide crosslinking agent and benzoin dimethyl ether and uniformly mixing to obtain a solution; and illuminating the solution under an ultraviolet light source, cutting and washing to obtain the fossilized active sludge. The micro-sewage treatment method by utilizing the prepared fossilized active sludge comprises the following steps: filling the fossilized active sludge in a reactor; and adding sewage to the reactor for aeration; and treating the sewage to obtain purified water. The fossilized active sludge particles are convenient to prepare, have low cost, and have high efficiency of removing ammonia nitrogen and organic matter whenbeing applied to a micro-sewage source; meanwhile, required equipment is simple and is easy to manage and maintain.

Description

technical field [0001] The invention relates to a method for preparing immobilized activated sludge and a method for treating slightly polluted water, belonging to the technical field of environmental protection. Background technique [0002] The shortage of water resources and serious water pollution have become important factors affecting the sustainable development of my country's national economy. Various production wastewater, domestic sewage and agricultural drainage directly enter the water body without meeting the discharge standards, causing great harm to surface water sources. The quality of water sources has also declined sharply. Due to the increasingly serious pollution, many drinking water sources are also polluted to varying degrees, thus deteriorating the quality of drinking water and affecting the drinking water health of residents. In these lightly polluted water sources, more and more organic compounds are determined to be toxic, and the presence of ammoni...

Claims

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Application Information

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IPC IPC(8): C02F3/12
CPCY02W10/10
Inventor 乔向利刘哲刘志伟曾颖林张振家
Owner 山东青素环保材料有限责任公司
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