Preparation method of zeolite applied to water pollution treatment

A water pollution and zeolite technology, applied in the direction of microorganism-based methods, methods using microorganisms, water pollutants, etc., can solve the problems of failure to fundamentally eliminate water pollutants and secondary pollution, and achieve improved removal of pollutants The ability of ions, avoiding secondary pollution, and increasing the effect of ion exchange capacity

Pending Publication Date: 2021-04-06
中科沸石(成都)水环境治理有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The water treatment principle of this method mainly uses physical and chemical methods to improve the adsorption performance of zeolite, and adsorb and gather heavy metal ions, organic substances, pesticides and other pollutants on zeolite. Although the purpose of evolving water bodies is achieved, secondary pollution is still caused. The accumulation and transfer of pollutants, the zeolite that adsorbs pollutants has become a new pollutant that needs to be replaced and cleaned regularly, failing to fundamentally eliminate water pollutants

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  • Preparation method of zeolite applied to water pollution treatment

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Embodiment 1

[0031] A kind of zeolite preparation method that this embodiment is applied to water pollution treatment comprises:

[0032] (1) soaking the natural zeolite with a particle diameter of 5mm in HCl solution with a concentration of 0.3mol / L for 24h, and then soaking with a NaOH solution with a concentration of 0.3mol / L for 24h;

[0033] (2) The soaked zeolite was steamed at 300° C. for 1 hour, and then rinsed with deionized water until pH=7.0;

[0034] (3) The zeolite after washing is subjected to secondary soaking treatment in the modified solution for 20 hours. In the modified solution, the concentration of sodium citrate is 0.2mol / L, and the concentration of NaCl is 0.5mol / L;

[0035] (4) The zeolite after the second immersion treatment was distilled at 300°C for 1 hour, and then washed with deionized water to pH=7.0 to obtain a modified zeolite;

[0036] (5) The modified zeolite is placed in the microbial culture solution in the bioreactor and cultivated for 30 hours to obta...

Embodiment 2

[0041] A kind of zeolite preparation method that this embodiment is applied to water pollution treatment comprises:

[0042] (1) soaking the natural zeolite with a particle diameter of 5mm in HCl solution with a concentration of 0.1mol / L for 24h, and then soaking with a NaOH solution with a concentration of 0.5mol / L for 8h;

[0043] (2) The soaked zeolite was steamed at 80° C. for 8 hours, and then rinsed with deionized water to pH=7.0;

[0044] (3) The zeolite after washing is soaked twice in the modified solution for 5 hours. In the modified solution, the concentration of sodium citrate is 1.2mol / L, and the concentration of NaCl is 1.0mol / L;

[0045] (4) The zeolite after the second immersion treatment was steamed at 80° C. for 6 hours, and then washed with deionized water to pH=7.0 to obtain a modified zeolite;

[0046] (5) The modified zeolite is placed in the microbial culture solution in the bioreactor and cultivated for 15 hours to obtain the modified biological zeolit...

Embodiment 3

[0049] A kind of zeolite preparation method that this embodiment is applied to water pollution treatment comprises:

[0050] (1) the natural zeolite with particle diameter is 3mm with the HN of concentration 0.2mol / L 3 Soak in solution for 20 hours, and then soak in KOH solution with a concentration of 0.3mol / L for 15 hours;

[0051] (2) The soaked zeolite was steamed at 200° C. for 2 hours, and then rinsed with deionized water until pH=7.0;

[0052] (3) The zeolite after washing is subjected to secondary soaking treatment in the modified solution for 15 hours, in the modified solution, the concentration of sodium citrate is 0.8mol / L, and the concentration of NaCl is 0.6mol / L;

[0053] (4) The zeolite after the second immersion treatment was steamed at 200° C. for 2 hours, and then washed with deionized water to pH=7.0 to obtain a modified zeolite;

[0054] (5) The modified zeolite is placed in the microbial culture solution in the bioreactor and cultivated for 20 hours to obt...

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Abstract

The invention discloses a preparation method of zeolite applied to water pollution treatment, and belongs to the technical field of sewage treatment. The preparation method comprises the following steps: soaking natural zeolite with acid and alkali in sequence; steaming the soaked zeolite for 1-8 hours at the temperature of 600-800 DEG C, and then washing to be neutral; carrying out secondary soaking treatment on the washed zeolite in a modified solution containing sodium citrate and NaCl, steaming the zeolite subjected to secondary soaking treatment at 600-800 DEG C for 1-8 hours, and washing to be neutral to obtain modified zeolite; and culturing the modified zeolite in a bioreactor to obtain the modified biozeolite. According to the method, physicochemical treatment and biological treatment are combined, the prepared zeolite is high in adsorption capacity, adsorbed pollutants such as organic matter and pesticide can be degraded, and thorough elimination of the pollutants is achieved.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment and relates to a method for preparing zeolite used in water pollution control. Background technique [0002] Zeolite is a mineral that was first discovered in 1756. Axel Fredrik Cronstedt, a Swedish mineralogist, discovered that a type of natural aluminosilicate ore would boil when burned, so it was named "zeolite". Zeolite has the properties of adsorption, ion exchange, catalysis, acid resistance and heat resistance, so it is widely used as adsorbent, ion exchanger and catalyst, and is also commonly used in gas drying, purification and sewage treatment. [0003] The basic unit of zeolite is silicon-oxygen tetrahedron (SiO 4 ) and aluminum oxide tetrahedron (ALO 4 ), there are many holes and channels inside the zeolite lattice, accounting for more than 50% of the overall structure of the zeolite, and its size is uniform and fixed, so that the zeolite has the function of selective adsor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/18B01J20/30C02F3/34C12N1/20C12N1/16C12N1/36C12R1/01C12R1/125C12R1/645C02F101/10C02F101/16C02F101/20C02F101/30
CPCB01J20/186C02F3/34C12N1/20C12N1/16C12N1/36C02F2101/16C02F2101/30C02F2101/20C02F2101/101B01J2220/4806B01J2220/4812B01J2220/4868
Inventor 罗红兵孙奥李龙黎川
Owner 中科沸石(成都)水环境治理有限公司
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