Waste water treatment device and process for synchronously removing nitrogen and phosphorus of sludge concentration microenvironment

A technology for synchronous denitrification and phosphorus removal and sewage treatment equipment, which is applied in the field of sewage treatment and can solve problems such as increased investment and operating costs, complicated operation, and difficulty in further improving the denitrification effect
CN101898831AActive Publication Date: 2010-12-01BEIJING DRAINAGE GRP CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
BEIJING DRAINAGE GRP CO LTD
Publication Date
2010-12-01

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Abstract

The invention relates to a waste water treatment device for synchronously removing nitrogen and phosphorus of sludge concentration microenvironment, comprising an anaerobic pond, two anoxic ponds, two oxidation ponds, two sedimentation ponds, an internal reflux pump, an external reflux pump, pipelines, a dissolved oxygen control device, an inlet water carbon source distribution device, an internal reflux positive displacement pump and an external reflux positive displacement pump; the dissolved oxygen control device is provided with a dissolved oxygen controller B and a dissolved oxygen concentration meter; the inlet water carbon source control device is provided with a nitrate nitrogen-concentration controller A and a nitrate nitrogen concentration meter; and the waste water treatment device is further provided with an internal reflux control device and an external reflux control device. The process utilizing the waste water treatment device comprises the following steps of setting control data of a controller C of the internal reflux pump A; setting control data of a controller D of the external reflux pump B; setting control data of the dissolved oxygen controller B and the nitrate nitrogen concentration controller A; and opening an inlet water gate and all machines and electric control parts for running. The invention is suitable for waste water treatment, and has simple process, energy saving, low cost and high water outlet efficiency and good quality.
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Description

technical field

[0001] The invention belongs to a sewage treatment technology, in particular to an anaerobic-anoxic-aerobic type, namely the improved equipment and process of the A / A / O sewage treatment technology. Background technique

[0002] At present, the traditional A / A / O wastewater treatment process is a widely used biological denitrification and phosphorus removal process, which solves the problem of wastewater denitrification and phosphorus removal to a certain extent. With the increasing awareness of environmental protection in the society and the increasing shortage of water resources, the requirements for the quality of effluent from sewage treatment plants are getting higher and higher. The traditional A / A / O process mainly has the following problems: 1. Insufficient carbon source affects the phosphorus release in the anaerobic tank and the denitrification process in the anoxic tank. 2. Lower activated sludge concentration affects the stability of effluent ammoni...

Claims

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