Method for treating black and odorous water by photocatalysis coupled microbial technology

A microbial technology, black and odorous water technology, applied in special compound water treatment, sustainable biological treatment, biological water/sewage treatment, etc., can solve the problems of difficult popularization and application, secondary pollution, serious situation, etc. Effect

Inactive Publication Date: 2020-12-25
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although a series of black and odorous water treatment projects have been carried out and many achievements have been made, the current situation is still very serious
[0003] The traditional methods of treating black and odorous water bodies include adsorbent adsorption, adding chemical flocculants, sediment dredging, etc., but all of them fail to achieve the removal of pollutants but transfer them, easily causing secondary pollution, and ecological restoration The treatment method has the problems of long time consumption, certain requirements on the environmental area and other factors, and it is not easy to popularize and apply.

Method used

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  • Method for treating black and odorous water by photocatalysis coupled microbial technology
  • Method for treating black and odorous water by photocatalysis coupled microbial technology
  • Method for treating black and odorous water by photocatalysis coupled microbial technology

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Experimental program
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Effect test

preparation example Construction

[0047] The preparation method of described nutrient solution is:

[0048] Each 1L culture solution is prepared by mixing the following raw materials in the weight ratio: 192mg NaAc·3H2O, 70mg NH4Cl, 12mg K2HPO4·3H2O, 11mg NaH2PO4·2H2O, 2mg CaCl2 / L, 2mg MgSO4·7H2O, and the rest is water.

[0049] The chemical oxygen demand COD of black smelly water described in the example Gr 132.6–148.6mg / L, ammonia nitrogen NH 3 -N was 14.26–15.75 mg / L and total phosphorus TP was 2.71–2.85 mg / L.

Embodiment 1

[0051] Place an aeration tray at the bottom of a 500mL beaker, add 400mL of black and odorous water, take 1.0g, 1.5g, 3.0g, 4.0g, 5.0g of microbial loads and domesticated bagasse cellulose-titanium dioxide composite carriers in the beaker, adjust The pH is 7, then put it into the photocatalytic reaction box and 10cm away from the 25W ultraviolet light source, turn on the aeration (air aeration, the flow rate is 2L / min), turn on the light source at the same time, start timing, respectively at 0d, 1d, 2d , 3d, 4d, 5d, 6d, 7d take water samples to measure COD, NH3-N, TP concentration. The result is shown in Figure 1.

[0052] This embodiment lasted 7 days from the beginning to the end of the reaction. With the increase of the carrier dosage, the removal effect of COD, NH3-N and TP in the black odorous water became better and better. The removal effect was the best when the carrier dosage reached 4g. When the value exceeds the optimal value, the removal effect gradually stabilize...

Embodiment 2

[0054] Place an aeration tray at the bottom of a 500mL beaker, add 400mL of black and odorous water, take 4.0g of microbial load and domesticated bagasse cellulose-titanium dioxide composite carrier, put it in the beaker, adjust the pH to 7, and put it into the photocatalytic reaction box At 10cm from the ultraviolet light source, the light sources are 8W, 15W, and 25W respectively. Turn on the aeration (air aeration, the flow rate is 2L / min), turn on the light source, and start timing. , 7d to take water samples to measure COD, NH3-N, TP concentration. The result is shown in Figure 2.

[0055] In this embodiment, from the beginning to the end of the reaction, as the light intensity of the light source increases, the removal effect of black and odorous water becomes better and better (as shown in Figure 2).

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Abstract

The invention discloses a method for treating black and odorous water by a photocatalysis coupled microbial technology, which comprises the following steps of: (1) putting black and odorous water to be treated into a reactor, and installing an aeration disc at the bottom of the reactor; (2) putting a bagasse cellulose-titanium dioxide composite carrier into activated sludge for biofilm culturing domestication, then putting the activated sludge into the reactor in the step (1), and adjusting the pH value to 7; and (3) irradiating the reactor by using an ultraviolet lamp with the ultraviolet intensity of 8-25W under the condition that the distance from the ultraviolet lamp to the reactor is 10cm, and aerating at the same time until the degradation reaction is finished. The method is appliedto treatment of the black and odorous water, the biodegradability of the black and odorous water is improved by introducing photocatalytic coupling microorganisms into treatment of the black and odorous water, favorable conditions are created for biodegradation, a synergistic treatment effect is achieved, and the method has good application prospects.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to a method for treating black and odorous water with photocatalytic coupling microbial technology. Background technique [0002] With the acceleration of urbanization and industrialization, many urban rivers and lakes in China and other countries are seriously polluted, and black and smelly water bodies appear, seriously affecting the lives of residents and threatening human health. Although a series of black and odorous water treatment projects have been carried out and many achievements have been made, the current situation is still very serious. [0003] The traditional methods of treating black and odorous water bodies include adsorbent adsorption, adding chemical flocculants, sediment dredging, etc., but all of them fail to achieve the removal of pollutants but transfer them, easily causing secondary pollution, and ecological restoration The treatment...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/10C02F1/32C02F1/72C02F1/74C02F101/10C02F101/16C02F101/32C02F101/34C02F101/38
CPCC02F1/32C02F1/725C02F3/105C02F1/74C02F2101/322C02F2101/345C02F2101/327C02F2101/16C02F2101/105C02F2101/38C02F2101/34C02F2305/10Y02W10/10
Inventor 熊建华朱红祥王双飞焦春霖潘柳疏
Owner GUANGXI UNIV
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