Method for microbiological treatment of rare earth ammonia nitrogen wastewater based on vehicle-mounted treatment system

Abstract

The invention relates to a method for microbiological treatment of rare earth ammonia nitrogen wastewater based on a vehicle-mounted treatment system. The method comprises the following steps: firstly, conveying high-pollution ammonia-nitrogen wastewater to be treated and photosynthetic autoheterotrophic mixed bacteria liquid into a facultative tank; measuring the pH value, the oxygen content andthe water temperature of the tail water, aerating for 3-5 hours, continuously injecting the tail water to be treated, and enabling the tail water to sequentially flow into an anaerobic tank and an aerobic tank step by step through overflow holes; and discharging the tail water treated by the aerobic tank outwards through an upper discharge pipe. A large-sized or medium-sized flat truck is adopted,the movable characteristic is achieved, and the tail water can be treated at a short distance according to the characteristic that tail water treatment places are scattered. And the treated tail water is superior to the national requirements of Discharge Standards of Pollutants for Rare Earth Industry. The ton treatment cost is extremely low, benefits are extremely remarkable, and application andpopularization are more convenient.

Description

technical field [0001] The invention relates to a method for treating rare earth ammonia nitrogen wastewater by using microorganisms based on a vehicle-mounted treatment system. Background technique [0002] Southern ionic rare earths are valuable non-renewable and important strategic resources in my country. At present, the in-situ leaching mining process is mainly used, and ammonium sulfate is used as the leaching agent. Or the wastewater brought out by rainwater (hereinafter collectively referred to as ammonia nitrogen wastewater), these ammonia nitrogen wastewater will affect the local surface water quality for more than ten years, so efficient, safe and economically feasible supporting ammonia nitrogen purification treatment technology is required. At present, domestic and foreign ammonia nitrogen wastewater treatment methods mainly include ammonia distillation method, breakpoint chlorine method, chemical precipitation method, reverse osmosis membrane method and biologic...

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Problems solved by technology

At present, domestic and foreign ammonia nitrogen wastewater treatment methods mainly include ammonia distillation method, breakpoint chlorine method, chemical precipitation method, reverse osmosis membrane method and biological deamination method, among which the cost of biological deamination method is relatively low, but due to the existing strains’ impact on carbon source The demand is high, and the rare earth tail water contains almost no carbon source, so a large amount of sugary carbon source needs to be added, and the cost is very expensive, so it cannot be popularized and applied in the industry

On the other hand, since the "in-situ" leaching mining process is mainly used, the retained and discharged ammonia nitrogen tail water is dispersed, and the centralized treatment of the dispersed ammonia nitrogen tail water requires a larger amount of engineering, a large investment, and high costs

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