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Material for rapidly eliminating black and odor of water body and preparation method of material

A water body and rapid technology, applied in the field of environmental governance, can solve the problems of strong secondary, high energy consumption, low efficiency, etc., and achieve the effect of promoting recovery and strong improvement ability.

Active Publication Date: 2019-04-12
SUZHOU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Technical problem to be solved: Aiming at the disadvantages of low efficiency, high energy consumption, and strong secondary nature of the existing black and odor elimination technology, the present invention provides a new technology for quickly eliminating black and odor in water bodies. The prepared adsorption material has the functions of oxygen supply, Strong oxidation ability, rapid precipitation, recovery of microorganisms and other characteristics, so as to provide a method for quickly eliminating black and odor, and avoiding black and odor of water body sediment again

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The steps of the new material preparation method are as follows:

[0024] (1) Water purification sludge treatment

[0025] Dewatered sludge from waterworks (Al 2 o 3 content of 25.7%) with a 1mm iron sieve to remove large particles, then placed in an oven, dried at 110°C for 3.5 hours, then crushed, and sieved with a 100-mesh sieve to obtain treated water purification sludge .

[0026] (2) Burning of purified water sludge

[0027] Put the treated water purification sludge in a muffle furnace, burn it at 550°C for 3.5 hours, take it out after burning, put it in a drying dish and cool it to room temperature, weigh 1kg of the burnt water purification sludge for later use .

[0028] (3) Preparation of new materials

[0029] Mix 300g of calcium peroxide powder, 500g of burnt water purification sludge, and 1200g of ferrous sulfate heptahydrate, and fully stir to obtain a mixed material.

Embodiment 2

[0031] Utilize the new material that embodiment 1 prepares to carry out black odor elimination test, concrete steps are as follows:

[0032] Select the river channel where black odor is occurring, take 10L of black odor overlying water, and take the black odor bottom mud of the river channel.

[0033] The relevant parameters of the black and odorous water were measured, dissolved oxygen 0.2mg / L, suspended matter 267mg / L, organic matter 97 mg / L, ammonia nitrogen 24 mg / L, and total phosphorus 7.9 mg / L.

[0034] Take another 4 1L beakers, cover the bottom of each beaker with 10cm thick sediment, and add 1L of overlying water. Add new materials, polyferric chloride, and aeration respectively, and have one as a control. According to the concentration of suspended solids, if the dosage is 25g per cubic meter, 25mg of new material will be added in this experiment; if the dosage of polyferric chloride is 8mg / L, 8mg of pure polyferric chloride will be added; the aeration should be str...

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Abstract

The invention discloses a material for rapidly eliminating black and odor of a water body and a preparation method of the material. The preparation method comprises the following steps: step 1, filtering water purification sludge by using an iron screen, carrying out drying, grinding and sieving to obtain water purification sludge, and firing the water purification sludge to obtained fired water purification sludge; and step 2, mixing calcium peroxide powder, the fired water purification sludge and ferrous sulfate heptahydrate to prepare the mixed material. A dry feeding mode is adopted; whenthe concentration of suspended solids is less than or equal to 200 mg / L, the feeding amount is 10-15 g / m<3>; when the concentration of suspended solids is greater than 200 mg / L and less than or equalto 500 mg / L, the feeding amount is 20-25 g / m<3>; and when the concentration of suspended solids is larger than 500 mg / L, the feeding amount is 40-50 g / m<3>. The material has the characteristics of relatively strong oxygen supply capacity, high sedimentation speed and high oxidation capacity, has capability of improving the microenvironment of bottom mud, and is beneficial to promoting recovery ofmicroorganisms in the bottom mud. After the material is immersed into the bottom mud, no new chemical risk is introduced.

Description

technical field [0001] The invention belongs to the technical field of environmental treatment, and in particular relates to a material for quickly eliminating black and odorous water bodies and a preparation method thereof. Background technique [0002] Although my country has invested a lot of manpower and material resources in the treatment of black and odorous water bodies, and has many technologies, methods, and materials to control black and odorous water bodies, in some cases, some water bodies still have sudden black and odorous events. The existence of black odor has seriously affected people's life and sense of well-being. As we all know, the occurrence of black odor is still sudden and unpredictable, and the disappearance of black odor is also confusing. But in any case, when black odor occurs, if there is a method or material that can quickly control or eliminate black odor, this is still in urgent need. Aiming at this, according to the principle of Fenton-like...

Claims

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Application Information

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IPC IPC(8): C02F1/28C02F1/52C02F1/72C02F101/30
CPCC02F1/281C02F1/5236C02F1/722C02F2101/30C02F2305/026
Inventor 李大鹏
Owner SUZHOU UNIV OF SCI & TECH
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