Test method for influence of content of flocculating agent on air flotation effect of flotation agent

Abstract

The invention discloses a test method for influence of the content of a flocculating agent on the air flotation effect of a flotation agent. The test method comprises the following steps: preparing flotation agents with different content of the flocculating agent; respectively adding the flotation agents with different content of the flocculating agent into simulated waste water, uniformly mixing the flotation agents with the simulated waste water with stirring and pouring obtained mixtures into different simulated air flotation devices; carrying out air floatation in all the simulated air flotation devices; weighing floating flocs in all the air flotation devices; filtering the collected floating flocs and then carrying out drying, cooling and weighing; analyzing influence of different content of the flocculating agent on the air flotation effects of the flotation agents according to data obtained in weighing; etc. The method provided in the invention can rapidly detect influence of the content of a flocculating agent on the air flotation effect of a flotation agent, thereby determining optimal content of the flocculating agent in the flotation agent; the method has the advantages of simple test steps, high test precision and low test cost.

Description

technical field [0001] The invention relates to a test method for the influence of flocculant content on the air flotation effect of a flotation agent. Background technique [0002] Among many urban sewage and industrial wastewater, oily wastewater from the petroleum industry is the most representative. Oilfield oily wastewater mainly comes from onshore and offshore oil extraction, processing, transportation (accidents and drainage), and industrial drainage. Oil pollutants form an oil film on the water surface, which isolates the atmosphere from the water surface and destroys the oxygen-enriched conditions of the water body. The reduction of dissolved oxygen in the water will cause the plankton in the water body to suffocate and die due to lack of oxygen; it will also limit the growth of algae and other aquatic plants. Photosynthesis affects the self-purification of water bodies; oil pollutants attach to the surface of soil particles, forming an oil film in the soil, making...

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Problems solved by technology

[0011] The flocculant content in the flotation agent has a great influence on its air flotation effect. If the flotation agent with a large flocculant content is used, the floc formation speed is fast, but the floc is large, and the floc is easily broken in a turbulent state. And sinking, floating characteristics are poor

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