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Method for in-situ degradation of sulfur-containing odor substances in water by using aerosol

An odorant and aerosol technology, applied in the field of water pollution control, can solve problems such as difficult management, high cost, secondary pollution, etc., and achieve the effects of simple operation, low cost, and convenient modification and installation.

Pending Publication Date: 2021-12-07
HUATIAN ENG & TECH CORP MCC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a method for in-situ degradation of sulfur-containing odor substances in water by using aerosol collagen to solve the problem of high cost, difficult management, or secondary pollution caused by the removal method of sulfur-containing odor substances

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The present embodiment is carried out in the laboratory, and the city river water that takes place black odor, after measuring its sulfur-containing smell substance hydrogen sulfide (H 2 S), Dimethyl disulfide (DMDS), Diethyl disulfide (DEDS), Amyl sulfide (Diamyl sulfide, DAS), Propyl sulfide (Dipropylsulfide, DPS) The concentrations were 410, 220, 140, 120 and 47 ng / L, respectively.

[0038] The black and smelly water is placed in three identical plastic containers (container A, container B and container C) of 20x20x50cm, the liquid level is set to be 10cm, a pair of air vents are set at a height of 15cm in the container, and air is pumped into it Air is pumped in from one ventilator, and air is released from the other ventilator. The air volume is controlled at 0.03L / h to ensure that the air exchange frequency in the space above the liquid surface in the container is 1 time / h. Of the 3 containers set up according to the above method, one of them is selected as conta...

Embodiment 2

[0040] This embodiment is carried out in two polders with an interval of 10 meters and an area of ​​80 square meters at the concave bay of Beihu Lake, Ma'anshan City, and the water body is about 150 square meters. The experiment took place in mid-June, when blue-green algae broke out in Beihu Lake, and the water body smelled bad. The concentration of chlorophyll reached 2.167 μg / L, the concentration of total phosphorus was 0.40 mg / L, the concentration of ammonia nitrogen was 2.8 mg / L, and the sulfur-containing odor substance hydrogen sulfide (H 2 S), Dimethyl disulfide (DMDS), Diethyl disulfide (DEDS), Amyl sulfide (Diamyl sulfide, DAS), Propyl sulfide (Dipropylsulfide, DPS) The concentrations were 212, 108, 76, 53 and 25ng / L, respectively.

[0041] The ordinary fountain aerator (circulation flux 14.5m 3 / h, spraying height 0.8m, spraying diameter 1.7m) the nozzle is transformed, makes 50% of fountain aerator spray water to be used for artificially manufacturing water aerosol...

Embodiment 3

[0044] This embodiment is carried out in the water quality purification project of the Nanhu Bypass in Ma'anshan City. The lake has poor fluidity, and the water source is the municipal rainwater pipe.

[0045] The Nanhu Bypass Water Purification Project is located in the west and east of the lake. The water exchange time between the concave bay on the west side and the river in the south is designed according to 2 days. A new ecological ditch of 325m is built in the green space on the southeast side of the park trail, and a submersible pump (Q=180m) is installed in the river on the south side of the South Lake near Huayu Road. 3 / h, H=5m, N=5.5kW), the operation time is 24 hours, the water body of the river is raised to the ecological ditch, and it is purified from south to north through the ecological ditch, and the purified water returns to the South Lake in the concave bay on the west side, thus forming the South Lake Bypass water purification in side channel and west cove....

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Abstract

The invention discloses a method for in-situ degradation of sulfur-containing odor substances in water by adopting aerosol, relates to the technical field of water pollution treatment, and aims to solve the problems that a method for removing the sulfur-containing odor substances is high in cost or difficult to manage or causes secondary pollution. The method comprises the following steps: aerosol is dispersed on the surface of a water body to suspend on the water surface to accelerate oxidative degradation of sulfur-containing odor substances, specifically, an aerosol generating device is mounted near the surface of the water body containing the sulfur-containing odor substances, wherein the aerosol generating device comprises a conveying part, and the liquid outlet end of the conveying part is provided with an aerosol spray head; the aerosol spray head is fixedly mounted at a certain height above the surface of the water body, the conveying part is started, the aerosol is continuously sprayed out of the aerosol spray head and scattered on the water surface until the surface of the water body is completely or partially covered by the aerosol, the conveying part is kept to be started for a period of time, and oxidative degradation of the sulfur-containing odor substances is accelerated; and the method is simple to use and low in cost, does not cause secondary pollution, and can accelerate oxidative degradation of sulfur-containing odor substances.

Description

technical field [0001] The invention relates to the technical field of water pollution control, in particular to a method for in situ degradation of sulfur-containing odor substances in water by using aerosol collagen. Background technique [0002] Sulfur-containing olfactory substances refer to sulfur-containing substances released by algae growth, death, and metabolism, which have relatively high smell and smell activity intensity and concentration levels in actual water bodies. Sulfur-containing olfactory substances include hydrogen sulfide (H 2 S), dimethyl disulfide (DMDS), diethyl disulfide (DEDS), amyl sulfide (Diamyl sulfide, DAS), propyl sulfide (Dipropyl sulfide, DPS), etc. etc. Sulfur-containing odor substances cause more serious problems. For example, dimethyl disulfide and dimethyl trisulfide are two sulfur-containing compounds with strong volatility and special odor, which often appear in polluted In the water body, the smell threshold of this kind of substanc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/72C02F101/10C02F101/34
CPCC02F1/72C02F2101/101C02F2101/40C02F2101/34
Inventor 周麒麟何宇虹吴述园朱红生
Owner HUATIAN ENG & TECH CORP MCC
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