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Device for biological phosphorus removal through biological phosphate reduction process

A biological phosphorus and phosphate removal technology, applied in biological water/sewage treatment, water pollutants, water/sludge/sewage treatment, etc., to achieve the effect of simple process flow, avoiding cost problems, and good activity

Inactive Publication Date: 2017-02-01
SHENYANG JIANZHU UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the application of phosphate reduction process in urban sewage treatment plants has not been reported, so it is urgent to seek phosphorus removal in urban sewage

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  • Device for biological phosphorus removal through biological phosphate reduction process

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[0018] The running water quality of the test process is: 0.25-0.35kgCOD / (m 3 d), 3.5-4.5gP / (m 3 d), 50.0-55.3N / (m 3 d). The water temperature is 29-31°C and the pH is 7.0-8.0.

[0019] To verify the treatment effect of phosphate-reducing bacteria, the experiment took the domestic sewage on the first floor of the No. 1 dormitory building of a certain university as the experimental water, and the provenance sludge of phosphate-reducing bacteria that had been well domesticated as the activated sludge. UASB was used to react The reactor is an experimental reactor and runs continuously for 30 days to observe the effluent concentration and removal efficiency of various water quality indicators in the effluent.

[0020] Phosphorus removal efficiency: After passing through the effluent of the UASB reactor, the removal rate of TP (total phosphorus) is stable at 82.23%-87.22%, and the concentration of total phosphorus in the effluent is about 0.46-0.49mg / L.

[0021] Nitrogen removal...

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Abstract

The invention discloses a device for biological phosphorus removal through a biological phosphate reduction process. Domestic wastewater enters a non-aerobic bioreactor from a raw water tank through an inflow water peristaltic pump, and the wastewater passes through a sludge bed of the non-aerobic bioreactor, which contains phosphate reduction bacteria, and then phosphate in the wastewater is reduced in a continuous reaction and collision process. Temperature of water in the non-aerobic bioreactor is 29-31 DEG C, and pH (potential of hydrogen) value of inflow water is controlled at 7.5-8.0. An up-flow anaerobic sludge bed reactor is selected as the non-aerobic bioreactor. Compared with phosphorus removal processes of the same type, the biological phosphate reduction process has the advantages of avoiding a sludge age contradictory phenomenon of denitrifying bacteria and phosphorus removing bacteria, and giving play to activity of microorganisms well; being needless of aeration, and avoiding a cost burden brought by energy consumption; being needless to discharge sludge, saving technical cost of following treatment of the sludge, and avoiding a secondary pollution problem possibly brought by the following treatment of the sludge.

Description

technical field [0001] The invention relates to the technical field of environmental protection equipment, in particular to a phosphorus removal device. Background technique [0002] At present, the focus, difficulties and hotspots of global water pollution control have shifted from simple organic matter control to water eutrophication caused by nutrients such as nitrogen and phosphorus. However, the traditional biological phosphorus removal technology has the cost burden caused by aeration and energy consumption, the follow-up problems of residual sludge treatment and disposal, the contradiction of sludge age between denitrification and phosphorus removal bacteria, and the complex and changeable pipeline process These technical difficulties have become the bottleneck of efficient phosphorus removal from sewage. The discovery of the phosphate reduction phenomenon has brought a new dawn for the technical breakthrough of the phosphorus removal process. [0003] Phosphate red...

Claims

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Application Information

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IPC IPC(8): C02F3/28C02F3/34
CPCC02F3/2846C02F3/34C02F2101/105C02F2101/16
Inventor 马兴冠徐丽魏文涛
Owner SHENYANG JIANZHU UNIVERSITY