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In-site preparation for rapidly eliminating black and smelly matters in polluting bottom sediment of river and method thereof

A technology for polluting sediment and river channels, which is applied in chemical instruments and methods, sludge treatment, water/sludge/sewage treatment, etc., and can solve the problems of long repair time, difficult-to-pollution sediment removal, and improvement of sediment pollution Limited and other problems, to achieve the effect of improving the degree of organic pollution, improving the ecological environment of urban rivers, and convenient operation

Active Publication Date: 2012-05-02
SHENZHEN WENKE GARDENING IND
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since the agent does not directly contact the polluted sediment, it takes a long time for repair and the degree of improvement of the sediment pollution is very limited, so it is difficult to truly remove the black and odor of the polluted sediment

Method used

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  • In-site preparation for rapidly eliminating black and smelly matters in polluting bottom sediment of river and method thereof
  • In-site preparation for rapidly eliminating black and smelly matters in polluting bottom sediment of river and method thereof
  • In-site preparation for rapidly eliminating black and smelly matters in polluting bottom sediment of river and method thereof

Examples

Experimental program
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Effect test

Embodiment

[0076] It is carried out on the beach mud with a length of 10 meters and a width of 10 meters on Shenzhen Bay Beach. The bottom sediment of this channel is affected by the Shenzhen River tide twice a day. During the whole test period, the temperature was 24-33°C, and the pollution situation was mainly caused by the accumulation of pollutants in the river sediment caused by the sewage discharge along the Shenzhen River. At the beginning of the test, refer to the method in Part 5 of the Marine Monitoring Specification: Sediment Analysis GB17378.5-2007, and measure the AVS value C in the polluted sediment. avs =1320mg-S / kg wet mud.

[0077] Calcium peroxide theoretical dose (mg-O / kg wet mud) = C avs ×(16 / 1)×(8 / 32)=5.28g-O / kg wet mud=11.8932g CaO 2 / kg wet mud

[0078] Calcium nitrate theoretical dose (mg-N / kg wet mud) = C avs ×(14 / 5)×(8 / 32)=924mg-N / kg wet mud=7.7930gCa(NO 3 ) 2 4H 2 O / kg wet mud

[0079] In this example, the actual dosage is based on 50% of the theoretic...

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Abstract

An in-site preparation for rapidly eliminating black and smelly matters in polluting bottom sediment of a river and a method thereof are disclosed. The preparation comprises the components by weight percentage (based on kg of unit weight of bottom sediment) as follows: 1) calcium peroxide, wherein the theoretical dosage of 0.375-0.75 time of calcium peroxide (mg-0 / kg sludge) is equal to [0.375-0.75]*[Cavs*16 / 1*8 / 32]; and calcium nitrate, wherein the theoretical dosage of 0.375-0.75 time of calcium nitrate (mg-N / kg sludge) is equal to [0.375-0.75]*[Cavs*8 / 5*14 / 32]; preparing the mixed medicament by water in volume ratio which is 20 times to a composite turbid liquid. The method comprises the steps of: 1) measuring the AVS of the volatile sulfide in the polluting bottom sediment referring to the method in the fifth section of ocean monitoring specification: sedimentary analysis (GB17378.5-2007); 2) calculating the theoretical dosages of calcium peroxide and calcium nitrate independently added; 3) preparing the composite turbid liquid; 4) and adding the composite turbid liquid to the bottom sediment. The method provided by the invention can rapidly eliminate the black and smelly matters in the polluting bottom sediment.

Description

technical field [0001] The invention relates to a composite suspension preparation for rapidly eliminating black and odorous river channel polluted bottom mud in situ. The invention also relates to a method for quickly eliminating the black and odor of river channel polluted sediment in situ by using the composite suspension preparation. Background technique [0002] There are many rivers and lakes in our country. Due to wastewater discharge, rainwater leaching and atmospheric deposition, a large amount of pollutants enter the rivers, far exceeding the self-purification capacity of the rivers. The pollutants entering the river water body, after long-term settlement, deposit and enrich in the river bottom mud, causing pollution of the river bottom mud. Under anaerobic conditions, anaerobic microorganisms in the polluted sediment will use sulfate as an electron acceptor to reduce sulfate to hydrogen sulfide. At the same time, during the decomposition of organic matter, odor-c...

Claims

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Application Information

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IPC IPC(8): C02F1/00C02F11/00
Inventor 董文艺王宏杰吴华财刘军商丹丹
Owner SHENZHEN WENKE GARDENING IND
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