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Treatment method of high iron manganese and ammonia nitrogen compound pollution low temperature underground water

A technology of compound pollution and treatment method is applied in the field of treatment of low temperature groundwater with high iron, manganese, ammonia and nitrogen compound pollution, and can solve the problems of iron, manganese, ammonia and nitrogen compound pollution and the like.

Active Publication Date: 2018-10-26
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While giving full play to the function of zeolite exchange and adsorption of ammonium ions, the biological zeolite filler is endowed with the function of catalytic oxidation to remove iron and manganese, and the function of biological carrier. 2+ , Mn 2+ , Ammonia nitrogen biological oxidation realizes the regeneration of zeolite, and solves the problem of simultaneous purification of iron, manganese, ammonia and nitrogen compound pollution in low temperature groundwater

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0045] In the present embodiment, the processing method of high-iron-manganese-ammonia-nitrogen composite polluted low-temperature groundwater is as follows:

[0046] 1. Crushing and screening the natural clinoptilolite ore to obtain zeolite particles with a particle size of 0.8-1.2mm;

[0047] 2. Add 100g of zeolite particles into 0.5M 100mL manganese sulfate solution, add 0.5M 100mL potassium permanganate solution under stirring, and continue stirring for 0.5h; after the reaction, take out the particles and drain them, and dry them at 150°C. get MnO X - Zeolite nanocomposites;

[0048] 3. MnO X - The zeolite nanocomposite material is impregnated with 0.05M ammonium bicarbonate solution for 5 hours at room temperature to absorb ammonium ions, and packed into a filter column;

[0049] 4. The nitrifying bacteria and iron-manganese oxidizing bacteria liquid (the total concentration of the bacterial liquid is greater than 10 9 cfu / mL) was transported to the filter column with...

Embodiment 2

[0056] In the present embodiment, the processing method of high-iron-manganese-ammonia-nitrogen composite polluted low-temperature groundwater is as follows:

[0057] 1. Pulverize the natural zeolite and pass through a 100-mesh sieve to obtain zeolite powder; add cement, lime, surfactant and water to the obtained zeolite powder, and stir to obtain a paste; add aluminum powder to the obtained paste as a foam Foaming agent, stirred evenly, poured into the mold, foamed at 40°C for 3 hours, then cut into 2*2*2cm squares with steel wire, placed in a steam curing room for 12 hours under saturated steam pressure at 130°C, and obtained zeolite porous material;

[0058] In step 1, the addition of cement is 15% of the quality of zeolite powder, the addition of lime is 5% of the quality of zeolite powder, the addition of surfactant is 0.1% of the quality of zeolite powder, and the addition of aluminum powder It is 0.2% of the mass of zeolite powder, and the mass ratio of water to total ...

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Abstract

The invention discloses a treatment method of high iron manganese and ammonia nitrogen compound pollution low temperature underground water. Natural zeolite is used as a raw material, a zeolite-basedmaterial is loaded with manganite, through impregnation of enrichment culture liquid, the material is loaded with microorganisms of nitrifying bacteria, iron and manganese oxidizing bacteria and the like, so that a multifunctional compound material of the zeolite loaded with the manganite and the microorganisms is obtained, a filter candle is filled with the multifunctional compound material, sequencing batch running is conducted according to four stages of inlet water adsorption, water emptying, air blasting for bio-regeneration and nitrate washing, meanwhile, iron, manganese and ammonia nitrogen in the low temperature underground water are purified, and thus effluent reaches the domestic drinking water quality standards.

Description

technical field [0001] The invention relates to a treatment method for high-iron, manganese, ammonia-nitrogen composite polluted low-temperature groundwater, and belongs to the technical field of water treatment and utilization of non-metallic mineral resources. Background technique [0002] Groundwater in the three north regions of my country is generally low-temperature (less than 10°C) hypoxic, and nitrogen pollution to groundwater caused by chemical weathering of rocks, microbial reduction, and agricultural planting and breeding has resulted in groundwater Fe 2+ , Mn 2+ , NH 4 + The phenomenon that -N exceeds the standard at the same time is very common, among which Fe 2+ 5~20mg / L, Mn 2+ 2-5mg / L, NH 4 + -N 1-15mg / L, while the drinking water standard is NH 4 + -N concentration<0.5mg / L, total iron concentration<0.3mg / L, Mn 2+ Concentration <0.1mg / L. Developing economical technical methods to deal with this kind of inferior groundwater and ensuring the wa...

Claims

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Application Information

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IPC IPC(8): C02F3/34C02F3/02C02F101/20C02F101/16C02F103/06
CPCC02F3/02C02F3/34C02F2101/16C02F2101/203C02F2101/206C02F2103/06Y02W10/10
Inventor 陈天虎马文婕刘海波
Owner HEFEI UNIV OF TECH
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