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Purification system of transfusion type biology bed in use for treating polluted river water

A purification system and biological bed technology, applied in the field of polluted river treatment, can solve the problems of environmental side effects, difficult long-term application, high cost, etc., achieve the effects of wide source of raw materials, realization of waste utilization, and wide application prospects

Inactive Publication Date: 2007-02-21
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Physical and chemical technologies have good short-term effects, but are expensive, have certain side effects on the environment, and have unsatisfactory ecological effects, making it difficult to apply them for a long time. They are generally used in emergency treatment of polluted rivers

Method used

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  • Purification system of transfusion type biology bed in use for treating polluted river water
  • Purification system of transfusion type biology bed in use for treating polluted river water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The length, width and depth of the pool body are 12.0m, 2.0m and 2.0m respectively, the volume ratio of the pebble area, waste brick and waste pottery area, and zeolite area is 1:2:1, and the volume ratio of waste brick and waste pottery is 2 : 1. The water temperature is 26.6°C, the hydraulic retention time HRT=8h, the hydraulic load is 0.94m / h, COD and NH are measured when entering the water 4 + - When the concentrations of N are 58.1mg / L and 7.75mg / L respectively, COD and NH are measured after flowing through the system 4 + The concentrations of -N are 28.3mg / L and 0.50mg / L respectively. 4 + The removal rates of -N were 51.3% and 93.5%, respectively.

Embodiment 2

[0023] The length, width and depth of the pool body are 12.0m, 2.0m and 2.0m respectively, the volume ratio of the pebble area, waste brick and waste pottery area, and zeolite area is 1:2:1, and the volume ratio of waste brick and waste pottery is 2 : 1. The water temperature is 25°C, the hydraulic retention time HRT=6h, the hydraulic load is 1.25m / h, COD and NH are measured when entering the water 4 + - When the concentrations of N are 25.1mg / L and 4.21mg / L respectively, COD and NH are measured after flowing through the system 4 + The concentrations of -N are 16.2mg / L and 0.49mg / L respectively. 4 + -N removal rates were 35.6%, 88.3%.

Embodiment 3

[0025] The length, width and depth of the pool body are 12.0m, 2.0m and 2.0m respectively, the volume ratio of the pebble area, waste brick and waste pottery area, and zeolite area is 1:2:1, and the volume ratio of waste brick and waste pottery is 2 : 1. The water temperature is 18.8°C, the hydraulic retention time HRT=4h, the hydraulic load is 1.88m / h, COD and NH are measured when the water enters 4 + - When the concentrations of N are 27.1mg / L and 6.61mg / L respectively, COD and NH are measured after flowing through the system 4 + The concentrations of -N are 17.1mg / L and 1.48mg / L respectively. 4 + The removal rates of -N were 36.7% and 77.6%, respectively.

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Abstract

This invention discloses seepage biological bed purification system for polluted river. The purification system comprises: a pool constructed along riversides with a water inlet pipe and a water outlet pipe. Along the river flow direction the pool is divided into three zones. The first zone is filled with cobbles, the second is filled with waste bricks and waste ceramics, and the third is filled with zeolite. On the front end of each zone is set a buffer plate, and on the back end is an overflow weir. At the bottom of each zone is a penetrated aeration pipe. The said wastewater is introduced into the pool through the water inlet pipe, and passes through the three zones after aeration. The purification system can effectively remove organic matters, P and N pollutants in the wastewater, and has abundant raw materials. Besides, the purification system can ensure a long term and stable operation, thus having potential applications in river treatment field.

Description

technical field [0001] A seepage type biological bed purification system for polluted river water relates to the technical field of polluted river treatment. Background technique [0002] The serious deterioration of water quality is one of the main problems of river pollution in China, and the purification of river water quality is a necessary measure for river governance. Physical / chemical technology is currently a commonly used purification technology in urban river treatment, mainly including river aeration, sediment dredging, water diversion for flushing sewage, and dosing of chemical agents and bioaugmentation agents. Physical and chemical techniques have good short-term effects, but are expensive, have certain side effects on the environment, and have unsatisfactory ecological effects, making it difficult to apply them for a long time. They are generally used in emergency treatment of polluted rivers. Contents of the invention [0003] The purpose of the present in...

Claims

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Application Information

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IPC IPC(8): C02F3/10
CPCY02W10/10
Inventor 何苗胡洪营林岩清张建
Owner TSINGHUA UNIV
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