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Reclaimed water supplying-type surface water deep purification combined process method and device

A technology of deep purification and combined device, which is applied in chemical instruments and methods, oxidized water/sewage treatment, water/sewage multi-stage treatment, etc., to achieve high-efficiency removal, obvious removal effect, and reduced dosage.

Active Publication Date: 2012-07-04
BEIJING WATER SCI & TECH INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The purpose of the present invention is to overcome the deficiencies of the existing single biological method / physicochemical process in the treatment of micro-polluted surface water purification technology, aiming at the water quality characteristics of high content of dissolved organic matter in micro-polluted surface water and nitrate nitrogen as the main nitrogen, Provide a regenerated water replenishment type surface water deep purification combined process method and device including a magnetic ion exchange resin mixed reaction sedimentation tank, a coagulation reaction sedimentation tank, an ozone contact reaction tank and an ultrafiltration membrane filtration system

Method used

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  • Reclaimed water supplying-type surface water deep purification combined process method and device
  • Reclaimed water supplying-type surface water deep purification combined process method and device

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Embodiment 1

[0062] The polluted water source is the lake water of an experimental river and lake in the Beijing area. The above-mentioned device of the present invention is used to treat sewage, and the polluted surface water is lifted by the water inlet pump and sent to the magnetic ion exchange resin mixed reaction precipitation system to remove part of the organic matter and nitrogen compounds. The resin is a new type of resin developed by ORICA company in Australia, the dosing concentration is 10ml / L-20ml / L, the mixing reaction time is 30min, and the precipitation time is 20min;

[0063] Afterwards, the sewage flows into the coagulation reaction precipitation system from the outlet of the magnetic ion exchange resin mixed reaction precipitation system to remove phosphorus and suspended organic matter. The added coagulant is granular or powder polyaluminium chloride, and the Adding concentration is 40mg / L, fast mixing reaction time is 8min~10min, slow mixing reaction time is 20min~30min...

Embodiment 2

[0070] The polluted water source is the lake water of an experimental river and lake in the Beijing area. The above-mentioned device of the present invention is used to treat sewage, and the polluted surface water is lifted by the water inlet pump and sent to the magnetic ion exchange resin mixed reaction precipitation system. The resin used is a new type of resin developed by ORICA company in Australia , and its particle size is about 150-180 μm, which is 1 / 3-1 / 2 of the traditional resin particle size. Carry out ion exchange reaction in this system to remove some organic matter and nitrogen compounds, the dosing concentration is 15ml / L-25ml / L, the mixing reaction time is 30min, and the precipitation time is 20min;

[0071] Afterwards, the sewage flows into the coagulation reaction precipitation system from the outlet of the magnetic ion exchange resin mixed reaction precipitation system to remove phosphorus and suspended organic matter. The added coagulant is granular or powde...

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Abstract

The invention relates to a reclaimed water supplying-type surface water deep purification combined device comprising a magnetic ion exchange resin mixing reaction precipitation system, a coagulation reaction precipitation system, an ozone contact reaction tank, and an ultrafiltration membrane filtration system which are connected in order. The invention also relates to a method for purifying water by using the device, which comprises the following steps: pumping sewage into the magnetic ion exchange resin mixing reaction precipitation tank through a pipeline, removing part of suspensions and soluble organic matter; delivering the supernatant into the coagulation reaction precipitation tank, removing most suspensions, total phosphor and part of organic matter under the action of a coagulant; delivering the supernatant into the ozone contact tank, completing algae cell lysis and algae killing process by ozone, delivering ozone oxidation effluent into the ultrafiltration membrane filtration system, filtering the effluent through the membrane surface under the action of a vacuum suction pump, delivering the effluent into a clean water tank.

Description

technical field [0001] The invention relates to a regenerated water replenishment type surface water deep purification treatment technology, in particular to a combined process technology of magnetic ion exchange resin adsorption-coagulation sedimentation-ozone contact oxidation-ultrafiltration membrane filtration. Background technique [0002] With the rapid development of society and economy, especially the increase in global water demand leading to the shortage of water resources and water pollution in the world, it is increasingly urgent to vigorously develop reclaimed water reuse projects to realize the utilization of water resources and the improvement of urban water environment. However, due to the low replenishment of clean water in rivers and lakes, single water source, slow water flow, high nitrogen and phosphorus nutrients, and serious surface runoff problems, there is still a relatively high risk of eutrophication in the direct reuse of reclaimed water in rivers a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F1/42C02F1/52C02F1/78C02F1/44
Inventor 廖日红申颖洁战楠李其军孟庆义
Owner BEIJING WATER SCI & TECH INST
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