Microwave assisted integrated process for synthesizing and treating oily wastewater by using organic bentonite
A bentonite and waste water technology, which is applied in adsorption water/sewage treatment, light water/sewage treatment, liquid separation, etc., can solve the problems of complex process and large energy consumption during treatment, and achieve accelerated integration, efficiency improvement, and efficient adsorption and purification. Effect
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Embodiment 1
[0020] The particle size is 20 order untreated bentonite and the cationic surfactant cetylpyridinium chloride of 20%CEC is added in the crude oil-containing wastewater, and the solid / liquid mass ratio of bentonite and oil-containing wastewater is 1:1000, and then Put 1L of the waste water into a microwave reactor with a power of 100W for 10s, stir for 2 minutes, and then use centrifugation to separate the solid / liquid two-phase. It is determined that the removal rate of oil in the waste water is greater than 95%.
[0021] The organobentonite modified by the same amount and the same type of cationic surfactant can only remove 35% of the oil in the same wastewater after adsorption for the same time without microwave action.
Embodiment 2
[0023] Be that the cationic surfactant cetyltrimethylammonium bromide of the untreated bentonite of 200 orders and 100%CEC join in the edible oil wastewater, the solid / liquid mass ratio of bentonite and oil wastewater is 1: 10000, then put 1L of the waste water into a microwave reactor with a power of 5000W for 1 min, and then stir for 3 min, and then use the free precipitation method for solid / liquid two-phase separation. It is determined that the removal rate of oil in the waste water is greater than 99%.
[0024] The organic bentonite modified by the same amount and the same type of cationic surfactant has only 48% of the oil removal rate in the same wastewater after adsorption for the same time without microwave action.
Embodiment 3
[0026] Add untreated bentonite with a particle size of 100 mesh and cationic surfactant chlorinated octaalkylpyridine with 80% CEC to the wastewater containing diesel oil. The solid / liquid mass ratio of bentonite and oily wastewater is 1:1000, and then 1L The waste water was placed in a microwave reactor with a power of 100W for 1 min, stirred for 3 min, and solid / liquid two-phase separation was carried out by means of free precipitation. It was determined that the removal rate of oil in the waste water was greater than 99%.
[0027] The organic bentonite modified by the same amount and the same type of cationic surfactant has only 39% of the oil removal rate in the same wastewater after adsorption for the same time without microwave action.
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