Black and odorous riverway sewage treatment process

A sewage treatment and river channel technology, applied in water/sewage treatment, biological water/sewage treatment, light water/sewage treatment, etc., can solve the problems of multiple organic pollutants and incomplete effects, and achieve high removal rate and good removal Odor and decolorization effect, strong adsorption effect

Inactive Publication Date: 2020-12-22
辽宁鑫知界科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the effect of this process on the treatment of black and odorous river sewage is not comprehensive, and there may still be more organic pollutants in the sewage, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: the preparation of vermiculite / diatomite / activated carbon composite adsorbent

[0026] Vermiculite / diatomite / activated carbon composite adsorbent is prepared by the following method:

[0027] Weigh 28 parts of vermiculite powder and 18 parts of diatomaceous earth, mix them uniformly, and place them at 500°C for 90 minutes to calcinate to obtain a calcined mixed powder; add 15% of the total mass of starch and an appropriate amount of water to the calcined mixed powder, and mix well , to make granular materials with a particle size of 2-3mm, and then place them in an oven at 80-85°C to dry them, then calcinate them at 780°C for 2.5 hours under the protection of inert gas, and cool them with the furnace under the protection of inert gas to room temperature, and then pulverized to below 30 mesh to obtain the vermiculite / diatomaceous earth / activated carbon composite adsorbent.

Embodiment 2

[0028] Embodiment 2: the preparation of vermiculite / diatomite / activated carbon composite adsorbent

[0029] Vermiculite / diatomite / activated carbon composite adsorbent is prepared by the following method:

[0030] Weigh 20 parts of vermiculite powder and 15 parts of diatomaceous earth, mix them evenly, and place them at 450°C for 60-90 minutes to calcinate to obtain a calcined mixed powder; add 20% of the total mass of starch and an appropriate amount of water to the calcined mixed powder, Mix evenly to make granular materials with a particle size of 2-3mm, then dry them in an oven at 80-85°C, then calcinate at 720°C for 2 hours under the protection of an inert gas, and carry them into the furnace under the protection of an inert gas. Cool to room temperature, and then pulverize to below 30 mesh to obtain vermiculite / diatomaceous earth / activated carbon composite adsorbent.

Embodiment 3

[0031] Embodiment 3: Preparation of photocatalyst nickel-doped nano-titanium dioxide

[0032] The photocatalyst nickel-doped nano-titanium dioxide is prepared by the following method:

[0033] Mix butyl titanate with nickel nitrate hexahydrate, absolute ethanol, and water evenly, and then slowly add glacial acetic acid dropwise while vigorously stirring; continue stirring for 1 hour after the glacial acetic acid is dripped, let the resultant stand for 5 hours, and place in 60 Dry at -70°C to constant weight, grind and place in a muffle furnace, calcinate at 720°C for 3.5 hours, cool to room temperature, grind and sieve to obtain nickel-doped nano-titanium dioxide.

[0034] Among them, the mass ratio of butyl titanate, nickel nitrate hexahydrate, absolute ethanol, water, and glacial acetic acid is 1:0.1:8:0.8:0.5.

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PUM

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Abstract

The invention provides a black and odorous riverway sewage treatment process which comprises the following steps: (1) flocculation treatment: introducing black and odorous riverway sewage into a sewage treatment tank, regulating the pH value to 7-8, and adding a flocculant for flocculation treatment; (2) aerobic treatment: introducing the sewage into an aerobic tank for aerobic treatment; (3) electro-Fenton treatment: introducing the sewage into an electro-Fenton reaction device for electro-Fenton treatment; (4) adsorption treatment: introducing the sewage into an adsorption tank, and adding avermiculite/diatomite/activated carbon composite adsorbent for adsorption treatment; (5) photocatalytic treatment: introducing the water into a photocatalytic tank, adding a photocatalyst nickel-doped nano titanium dioxide, and carrying out photocatalytic treatment; when the treatment process is used for treating black and odorous riverway sewage, the removal rate of COD, ammonia nitrogen and TPis high, and the deodorization and decolorization effects are good.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a black and odorous river sewage treatment process. Background technique [0002] With the continuous improvement of my country's urbanization rate, the discharge of urban sewage has increased significantly, and the pollution load of urban surface water bodies has also increased. As a result, the quality of surface water is generally in the national surface water quality standard V and inferior to V. between. [0003] The black and odorous river course is mainly due to the imbalance of oxygen supply and consumption in the water body caused by excessive pollution. Under anoxic or even anaerobic conditions in the water body, pollutants are transformed and produce odorous substances such as ammonia nitrogen, hydrogen sulfide, and volatile organic acids, as well as iron and manganese. Black substances such as sulfides. The black and smelly river will not only affect the har...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14B01J20/20B01J20/30B01J23/755C02F101/10C02F101/16C02F101/20C02F101/30
CPCB01J20/12B01J20/14B01J20/20B01J23/755B01J35/004B01J35/023C02F1/288C02F1/30C02F1/4672C02F1/5236C02F1/56C02F1/66C02F3/02C02F3/34C02F9/00C02F2101/101C02F2101/105C02F2101/16C02F2101/20C02F2101/30C02F2303/02C02F2305/026C02F2305/10
Inventor 李佳
Owner 辽宁鑫知界科技有限公司
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