Apparatus for treating oil-containing alkaline waste water

Abstract

The invention relates to an oil-containing alkaline wastewater treatment process and equipment. The process uses oil-containing alkaline wastewater and industrial acid water as raw material for the neutralization reaction. Qualified water after the neutralization reaction is pre-treated through an air floatation method, enters a biochemical reaction pool for the biochemical treatment when being cooled by a cooling tower and aerates in the biochemical pool. Oil in the water is degraded by microorganism. The sludge settlement treatment is implemented through a sediment pool to remove suspendersin the water. The wastewater after the sediment enters a biological filter again for the deep treatment to satisfy the discharging requirements. After the treatment, the index COD of the water is less than or equal to 80mg / l, SS is less than or equal to 10mg / l and oil is less than or equal to 5mg / l. With the biochemical technology used for the oil removal, the consumption of a system is reduced. With the biological filtration used as a deep treatment system, the consumption of ore fillers is reduced. The invention has the advantages of less investment, low operation cost, wide resource, sufficient reaction, good treatment effect, compact structure and convenient management.

Description

technical field [0001] The invention relates to a purification treatment system for industrial oily alkaline wastewater. Background technique [0002] In the prior art, the oil-containing alkaline wastewater is pumped into the neutralization tank from the adjustment tank, and acid water is poured into the neutralization tank, and after neutralization, it is deoiled by air flotation, and then enters the degreasing filter for deep degreasing. [0003] The treatment method in the prior art is a pure physical and chemical treatment, and the oil content in the effluent is high, which cannot meet the requirements of advanced treatment for a long time. The above energy consumption is large, not energy-saving itself, and consumes a lot of mineral filter materials, resulting in secondary pollution, which does not meet environmental protection requirements, and is not enough to realize the full automation of the system and ensure the long-term stable operation of the system. Content...

AI Technical Summary

Problems solved by technology

[0003] The treatment method in the prior art is pure physical and chemical treatment, and the oil content in the effluent is high, which cannot meet the requirements of advanced treatment for a long time

The above energy consumption is large, it is not energy-saving itself, and consumes a lot of mineral filter materials, resulting in secondary pollution, which does not meet environmental protection requirements, and is not enough to realize the full automation of the system and ensure the long-term stable operation of the system

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