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Method and system for remediation and treatment of polluted river water

A technology for water body restoration and river course application in water/sewage multi-stage treatment, water/sludge/sewage treatment, energy wastewater treatment, etc. It can solve the problems of low impact resistance and poor sewage treatment effect, and achieve the goal of improving purification capacity, avoiding secondary pollution, and reducing investment and operating costs

Active Publication Date: 2012-05-23
中广信(福建)环保投资有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although this method has low construction and operation costs and is suitable for large-scale applications, it has poor sewage treatment effects and low impact resistance

Method used

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  • Method and system for remediation and treatment of polluted river water
  • Method and system for remediation and treatment of polluted river water
  • Method and system for remediation and treatment of polluted river water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] The present invention comprehensively controls a heavily polluted river course in Minhou County, Fujian City, Fujian Province, and the water quality index of the river course water body is: COD cr 214mg / L, BOD 5 92mg / L, NH 3 -N 35mg / L, dissolved oxygen (DO) 0.9mg / L.

[0061] The present invention adopts potassium dichromate method to measure COD in water body cr ; Determination of BOD in water by dilution inoculation method 5 , Determination of NH in water by Nessler's reagent colorimetric method 3 -N, adopt HI964400 portable dissolved oxygen measuring instrument (Beijing Hana Keyi Technology Co., Ltd.) to measure the dissolved oxygen (D0) in the water body, adopt HI9025 portable pH meter (Beijing Hana Keyi Technology Co., Ltd.) to measure the pH in the water body value.

[0062] 1. Composite anaerobic treatment

[0063] The river channel is separated by dams, thereby forming a composite anaerobic treatment section 4 in the river channel. Gates are provided on the...

Embodiment 2

[0086] The present invention comprehensively controls a certain polluted river in Sanming City, Fujian Province, and the water quality index of the river water body is: COD cr 134mg / L, BOD 5 59mg / L, NH 3 -N 15mg / L, dissolved oxygen (D0) 1.2mg / L. .

[0087] For the dam separation of the river, only one composite anaerobic treatment section is formed in the river, and the river water is treated in one step by composite anaerobic treatment.

[0088] In the composite anaerobic treatment in the composite anaerobic treatment section, except that the height of 1.2m from the bottom of the composite anaerobic treatment section is controlled by the pulse water distribution device, and the hydraulic retention time of the river water in the composite anaerobic treatment section is 2h, other All the same as the composite anaerobic treatment in Example 1.

[0089] The water quality characteristics of the composite anaerobic treatment effluent are shown in Table 1.

[0090] Table 1 Wate...

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Abstract

The invention discloses a method and a system for remediation and treatment of polluted river water. The method comprises the following steps that a river way is separated so that a composite anaerobic treatment segment is formed; a sediment stirring device is installed in the composite anaerobic treatment segment; a filling material is arranged at an upper part of the composite anaerobic treatment segment; river sediment is stirred by the sediment stirring device, then suspends and fully contacts with polluted river water from a lower part of the composite anaerobic treatment segment, wherein original indigenous microorganisms in the river sediment can effectively degrade pollutants in the polluted river water; the polluted river water with a part of the river sediment flows upstream, contacts with the filling material, and then is subjected to inoculation enrichment on the filling material so that a biomembrane is formed; the polluted river water is subjected to further treatment to form product water; and product water obtained by the method can be subjected to further aerobic and ecological remediation treatment and is discharged. The method and the system for remediation and treatment of polluted river water can obviously decrease a river sediment amount, can realize effective degradation of various pollutants in river water, and have the advantages of environmental friendliness, safety and good effectiveness.

Description

technical field [0001] The invention relates to a method and system for restoration and treatment of polluted river water, in particular to a treatment method for in-situ biological restoration of a river and a river water purification system. Background technique [0002] In recent years, with the development of my country's industry and the increase of urban population, the total amount of industrial wastewater and domestic sewage is also increasing continuously. A large amount of industrial wastewater and domestic sewage flow into the river, which makes the river seriously polluted and the water quality is extremely bad. At present, 90% The above-mentioned urban rivers are polluted to varying degrees, and some rivers are even completely degraded into Nashui Rivers, which completely lose their self-purification ability and turn black and smelly, seriously affecting the beautification of the city and people's lives. Therefore, comprehensive treatment of polluted rivers has b...

Claims

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Application Information

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IPC IPC(8): C02F3/28C02F9/14
CPCY02A20/402Y02W10/37
Inventor 崔喜勤林君锋原强陈益兵
Owner 中广信(福建)环保投资有限公司
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