Zanjon type gas-lift stream-pull tridimensional circulation type integral co-construction oxidation ditch

Abstract

The invention relates to a zanjon air lifting pushing solid circulation integrated construction oxidation ditch, which comprises an anoxic zone, an anaerobic zone, an aerobic zone provided with a millipore aerator group and an integrated construction oxidation ditch of a solid and liquid separating zone, wherein, the anoxic zone is arranged at the front end of a main ditch. The integrated construction oxidation ditch is characterized in that a horizontal partition board which divides the main ditch into an upper groove layer and a lower groove layer as well as is left with channels at the front and the back is arranged at the middle-lower part of the ditch body between the ditch walls at the tail ends of the anoxic zone and the main ditch, the aerobic zone is arranged at the upper groove layer and the tail end of the main ditch and is provided with n (n is more than or equal to 1) aeration lifting zone (s) which is (are) composed of an inlet water-retaining wall, an outlet water-retaining wall and the millipore aerator group and is (are) provided with a lower water inlet and an upper water outlet. The aerobic zone is internally provided with n aerobic reaction zone (s), and the solid and the liquid separating zone is arranged between the anaerobic zone and the nth aerobic reaction zone. The lower groove layer is the anoxic zone. The integrated construction oxidation ditch has the advantages that: better anoxic, anaerobic, aerobic, and solid and liquid separating environments are created, the total dephosphorization and the total denitrification effects are improved, the yielding water quality is better, the occupation area is reduced, and the construction and the operation costs are lowered.

Description

technical field [0001] The invention relates to a sewage and wastewater treatment facility-an oxidation ditch, in particular to a deep ditch air-lift push flow three-dimensional circulation integrally built oxidation ditch. Background technique [0002] Oxidation ditch is a time-delayed aerated activated sludge water treatment process with complete mixing and integral push flow hydraulic characteristics. Sewage, wastewater and activated sludge (mixed liquor) circulate in it. Due to its unique "closed circulation flow" Excellent hydraulic characteristics, long sludge age and low organic load make it a good effluent water quality, strong impact resistance, stable operation, simple process, easy maintenance, low sludge discharge, direct dehydration, and disposable The water treatment process with low construction investment and operation cost is widely used in urban sewage and industrial wastewater treatment. In recent years, deep-ditch oxidation ditch technology, represented ...

AI Technical Summary

Problems solved by technology

At present, although the oxidation ditch with microporous aeration as the oxygenation method can effectively increase the depth of the oxidation ditch (for example, the water depth exceeds 6 meters), if a higher depth of the oxidation ditch is pursued, the oxygenation equipment and underwater plug-flow equipment will be more expensive. Both the installed capacity and the dynamic load are non-linearly increased, thus reducing the economics of the deep-ditch oxidation ditch

Especially in the current situation of rapid economic development, population increase, further deterioration of natural water quality, fresh water resources, land resources and energy resources, the application of deep ditch oxidation ditch technology aimed at reducing land occupation is still subject to technical limitations and economic constraints

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