Combination process and device for deep purification of contaminated surface water

Abstract

The invention relates to a combination device for the deep purification of contaminated surface water using reclaimed water and sewage as main water sources. The combination device comprises a multi-layer filter material high-efficiency biological filter reactor, a biologically-enhanced anoxic biological filter reactor, a coagulative precipitation tank, an ozone contact tank and an aerobic biologically-enhanced activated carbon filter reactor which are sequentially connected. The invention also discloses a method for purifying water by using the device, which comprises the following steps: sewage is pumped through a pipeline into the multi-layer filter material high-efficiency biological filter filled with two porous suspension type fillers to be subject to synchronous nitration and denitrification reactions; then, the sewage flows into the biologically-enhanced anoxic biological filter reactor to be subject to a biochemical reaction under the anoxic conditions; subsequently, a treating fluid is added into the coagulative precipitation tank to remove most of suspended substances and part of organic substances under the action of a coagulating agent; the supernate of the precipitation tank flows into the ozone contact tank and then flows into the aerobic biologically-enhanced activated carbon filter reactor after ozone oxidation, and pollutants are adsorbed by activated carbon and are simultaneously degraded by enhanced aerobes; and ultimately, the outlet water from the filter tank flows into a clean water tank.

Description

technical field

[0001] The invention relates to a polluted surface water purification treatment technology, in particular to a multi-layer filter material high-efficiency biological filter-biologically enhanced anoxic biological filter-coagulation sedimentation-pre-ozone-aerobic biologically enhanced activated carbon filter reactor Combination process technology. Background technique

[0002] With the rapid development of society and economy, especially the increase in global water demand has led to the shortage of water resources in the world and the aggravation of water pollution. Human beings have become increasingly urgent for the utilization of renewable water resources and the improvement of urban water environment, and there is an urgent need for polluted surface water. The research and development of purification technology is used to restore the functional requirements of rivers and lakes, improve the utilization rate of water resources in the river basin and build ...

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