Carbon-sand filter tank and construction method for anti-corrosive coating of carbon-sand filter tank

Abstract

The invention relates to a carbon-sand filter tank. The carbon-sand filter tank comprises a left tank body, a right tank body, a water inlet channel, a filter board, a supporting board, a quartz sand layer, an activated carbon layer, a water outlet channel and a roof; the left tank body and the right tank body are arranged side by side, and are communicated; anti-corrosive coatings are arranged on inner walls of the left tank body and the right tank body; a plurality of water distribution slots are formed in the upper parts in the left tank body and the right tank body; the water distribution slots are connected with the water inlet channel for discharging water into the left tank body and the right tank body; the filter board, the supporting board, the quartz sand layer and the activated carbon layer are sequentially arranged on the bottom of the left tank body from bottom to top; aeration holes are formed in the right tank body; the water outlet channel is enclosed at the outer sides of the left tank body and the right tank body, and a water outlet flashboard is arranged among the water outlet channel, the left tank body and the right tank body; and the roof is erected on the tops of the left tank body and the right tank body by a plurality of framework columns. The carbon-sand filter tank disclosed by the invention has the advantages such as a simple structure, good ammonia nitrogen removal effect, high removal speed, low treatment cost and the like.

Description

【Technical field】 [0001] The invention relates to drinking water treatment equipment, in particular to a construction method of a carbon sand filter tank and an anticorrosion layer thereof, and belongs to the technical field of water treatment equipment. 【Background technique】 [0002] Ammonia nitrogen is one of the main pollutants in my country's surface water bodies, and the conventional process of "coagulation-sedimentation-filtration-disinfection" adopted by most waterworks in my country has very limited removal effect on ammonia nitrogen, so it is difficult for the factory water to meet the "Life Drinking Water Sanitation Standards (GB 5749-2006) requires that ammonia nitrogen effluent is less than 0.5mg / L. [0003] On the basis of the conventional process, the activated carbon biological treatment process is added, through the abundant biomass and relatively sufficient oxygen, the efficient removal of ammonia nitrogen can be achieved, and the quality of the factory wate...

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Problems solved by technology

But at present, for most of the waterworks in our country, there is a lack of corresponding facilities

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