Membrane system produced water PH callback apparatus and process thereof

Abstract

The invention relates to a membrane system produced water PH callback apparatus and a process thereof, and belongs to the field of landfill leachate treatment. The apparatus comprises a water collecting tank and a degassing tower arranged on the water collecting tank, wherein a steam-water separator is arranged below a gas outlet of the top of the degassing tower, a spraying apparatus is arrangedbelow the steam-water separator, a filler and a filler support plate are arranged below the spraying apparatus, a degassing fan is arranged below the filler support plate, the water collection tank isconnected with a PH detection system, the bottom tank body of the water collection tank is provided with a water discharge port, the water discharge port is connected with a discharge pump, the discharge pump is connected with a discharge pipeline and a circulation pipeline in parallel, the circulation pipeline is provided with a circulation pump, the circulation pump communicates with the spraying apparatus, and the circulation pipeline and / or the discharge pipeline are provided with valves. According to the apparatus and process, a mechanical removal method is adopted, the addition of a medicament for neutralization is not needed, the cost is saved, the manual addition of the medicament is not needed, the medicament leakage risk does not exist, and a lot of manpower and material resources consumed by the daily maintenance and the planned examining and repairing are obviously reduced.

Description

technical field [0001] The invention belongs to the field of landfill leachate treatment, and relates to a membrane system water production pH callback device and a process thereof. Background technique [0002] The water quality of leachate is affected by factors such as the composition, scale, precipitation and climate of landfill waste. Generally speaking, it has the following characteristics: large changes in water quality, high concentration of organic matter, high SS content, high ammonia nitrogen content and the ratio of nutrient elements According to the water quality conditions of each project, through various membrane separation technologies such as ultrafiltration, nanofiltration, roll type reverse osmosis, network tube type reverse osmosis, TUF softening membrane and material membrane, etc. Diversified combinations to achieve advanced treatment of leachate. [0003] The composition of the leachate is complex, and there are various insoluble salts such as calcium...

AI Technical Summary

Problems solved by technology

However, due to the addition of acid before the membrane treatment, the H in the water + The concentration increases, and due to the H + It is a monovalent cation, which is not easy to be intercepted by the membrane system, and will flood into the product water in large quantities. Therefore, the pH of the water produced by the general membrane system is less than 6. If it is discharged directly, it will not meet the environmental protection requirements, and the original technical solution needs to use sodium hydroxide agent , It needs manual deployment and addition, and the consumption of medicines is large, and there are risks in the purchase, storage and use of medicines

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