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Anaerobic biological treatment process for treating sewage

An anaerobic biological and treatment process technology, applied in the field of anaerobic biological treatment process, can solve the problems of difficulty in exerting microbial treatment effect, restricting the development of biological treatment sewage, increasing sludge production, etc., to achieve maximum effect and sewage treatment efficiency. High, the effect of promoting anaerobic treatment effect

Inactive Publication Date: 2022-07-29
安徽玛瑙泉食品科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the existing biological treatment methods, on the one hand, the activated sludge containing microorganisms is directly used for treatment. When the active microorganisms are free, it is difficult to gather, and it is difficult to exert a good microbial treatment effect; on the other hand, during the treatment process, Carbon sources need to be added to provide electron donors and promote the denitrification process. However, sodium acetate is generally used as a carbon source in the prior art, but long-term use of sodium acetate will increase sludge production and bring new pollution to sewage plants. Sludge disposal problems, therefore, limit the development of biological wastewater treatment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Preparation of compound microbial inoculum:

[0033] S1. Mix polyvinyl alcohol, sodium alginate and distilled water, heat to 85-90°C to dissolve, cool to room temperature, add silicon dioxide and calcium carbonate, stir evenly to obtain a mixed solution; polyvinyl alcohol, sodium alginate, distilled water , the dosage ratio of silicon dioxide and calcium carbonate is 4g:0.3g:50mL:0.2g:0.15g;

[0034] S2. Add the above mixture to the anammox sludge, stir magnetically at 30°C and 500 r / min for 15 minutes, after fully mixing, add 1.5g iron powder and stir evenly to obtain the bottom liquid; anammox sludge The dosage and mass ratio of iron powder is 10:0.3;

[0035] S3, adding calcium chloride to the saturated boric acid solution according to the solid-to-liquid ratio of 1g:50mL, and adjusting the pH to 6.7 with sodium carbonate to obtain a cross-linking solution;

[0036] S4. Add the bottom droplets to the cross-linking solution, stir for 20 minutes, then place it at -4°...

Embodiment 2

[0038] Preparation of compound microbial inoculum:

[0039]S1. Mix polyvinyl alcohol, sodium alginate and distilled water, heat to 85-90°C to dissolve, cool to room temperature, add silicon dioxide and calcium carbonate, stir evenly to obtain a mixed solution; polyvinyl alcohol, sodium alginate, distilled water , the dosage ratio of silicon dioxide and calcium carbonate is 4g:0.3g:50mL:0.2g:0.15g;

[0040] S2. Add the above mixture to the anammox sludge, stir magnetically at 30°C and 500 r / min for 15 minutes, after fully mixing, add 1.5g iron powder and stir evenly to obtain the bottom liquid; anammox sludge The dosage and mass ratio of iron powder is 10:0.3;

[0041] S3, adding calcium chloride to the saturated boric acid solution according to the solid-to-liquid ratio of 1g:50mL, and adjusting the pH value to 6.7 with sodium carbonate to obtain a cross-linking solution;

[0042] S4. Add the bottom droplets to the cross-linking solution, stir for 30 minutes, then place it a...

Embodiment 3

[0044] Prepare carbon source:

[0045] 1) Pick out inorganic solid debris such as plastic tableware, toilet paper and bones in the kitchen waste and kitchen waste, add water respectively to pulverize, and mix them according to the mass ratio of 4:1 to obtain the base material;

[0046] 2) Control the solid content in the base material to be 6%, inoculate anaerobic sludge, inoculate the volume ratio to 30%, and carry out fermentation at a temperature of 35° C. During the fermentation process, use 5mol / L NaOH solution to control pH=9, and the fermentation time For 4d, the carbon source was obtained.

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Abstract

The invention discloses an anaerobic biological treatment process for treating sewage, which belongs to the technical field of sewage treatment, and comprises the following steps: 1, introducing sewage into a pretreatment tank, and pretreating the sewage by adopting a macromolecular treatment agent; 2, introducing the pretreated sewage into an anaerobic tank, pre-placing a compound microbial agent in the anaerobic tank, adding a carbon source, and carrying out preliminary anaerobic treatment under ultrasonic and irradiation conditions; and step 3, removing irradiation, keeping the ultrasonic condition, and continuing anaerobic treatment to obtain discharge water reaching the standard. According to the invention, microorganisms are coated in the capsules to form the compound microbial agent, so that good conditions are provided for attachment and growth of the microorganisms, and the anaerobic treatment effect of the microorganisms on sewage is effectively promoted; kitchen waste and kitchen garbage are used as an external carbon source, so that waste recycling can be realized, and a new sludge problem which is difficult to treat cannot be caused; defects and defects in the prior art are improved, and the maximum effect of sewage treatment through a biological anaerobic technology is achieved.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to an anaerobic biological treatment process for treating sewage. Background technique [0002] With the rapid development of industry and agriculture and the improvement of people's living standards, a large amount of industrial waste water, agricultural waste water and domestic sewage flow into the oceans, lakes and rivers, causing serious water pollution, and the problem of water eutrophication is becoming more and more serious. Studies have shown that most of the pollutants in water are mainly organic pollutants, and the best treatment method is biological treatment, because biological treatment has better treatment effects and lower investment and operating costs than chemical and physicochemical treatments. [0003] However, the existing biological treatment methods, on the one hand, directly use activated sludge containing microorganisms for treatment, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F3/28C02F1/30C02F1/36C02F1/52
CPCC02F3/2806C02F1/30C02F1/36C02F1/5281C02F2305/06
Inventor 顾青李景红戴义龙张贤菊顾成方徐山永张元元彭书传杨英
Owner 安徽玛瑙泉食品科技有限公司
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