Method for removing lead from industrial wastewater with magnetic biological adsorption agent
A biosorbent and industrial wastewater technology, applied in biological water/sewage treatment, adsorption water/sewage treatment, chemical instruments and methods, etc., can solve the problems of difficult solid-liquid separation, low reaction efficiency, long action time, etc., to achieve The effect of simple process, high processing efficiency and low operating cost
Inactive Publication Date: 2010-01-20
HUNAN UNIV
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Problems solved by technology
However, most of the currently reported biosorbents are free microorganisms, and their application is greatly limited due to problems such as long action time, low reaction efficiency, and difficulty in solid-liquid separation.
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[0023] 1. Preparation of Phanerochaete chrysosporium bacterial powder
[0024] Scrape the purchased Phanerochaete chrysosporium (CCTCC AF96007) from the preserved slant medium, and inoculate it into the potato glucose medium, fill each 500mL Erlenmeyer flask with 200mL of liquid medium, and cultivate at a temperature of 30-37°C After vibrating and cultivating at 150-180rpm for 5 days, the bacteria balls were filtered out, washed repeatedly with deionized water, collected and freeze-dried, ground and pulverized through a 180-mesh sieve to obtain bacteria powder. The potato glucose medium consists of: 40g of potatoes, 4g of glucose, and 200mL of water.
[0025] 2. Preparation of magnetic nanoparticles
[0026] (1) Prepare 50mL of 0.4mol / L hydrochloric acid, take 38mL in a beaker, fill with nitrogen for 10min; weigh 8.5g of FeCl 3 ·6H 2 O and 3g FeCl 2 4H 2 O, dissolved in 0.4mol / L hydrochloric acid filled with nitrogen;
[0027] (2) Prepare 375mL of 0.7mol / L ammonia water,...
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Abstract
The invention discloses a method for removing lead in industrial waste water by means of a magnetic biologic adsorbent. The method comprises the following steps that: firstly, the pH value of industrial waste water to be treated is adjusted to between 3.5 and 7; then, no less than 45g of magnetic biologic adsorbent is added in every stere of lead-containing waste water, and the temperature of the waste water is controlled between 20 and 40 DEG C; oscillation adsorption is carried out for 24 to 48 hours and then the adsorbent is filtered out; the filtered water is adjusted to neutrality and then is discharged, thereby completing the treatment of industrial waste water; and the magnetic biologic adsorbent is an immobilized magnetic nano particle-phanerochaete chrysosporium biologic adsorbent. The method has high adsorption efficiency, good adsorption effect, wide application range, simple treatment process, convenient operation and low cost, and can effectively remove lead in industrial waste water.
Description
technical field [0001] The invention relates to a biological treatment method for industrial waste water, in particular to a biological treatment method for lead in industrial waste water. Background technique [0002] The harm of heavy metals in the environment has been paid more and more attention to by human beings. Among them, lead is a serious environmental poison and neurotoxicity. Once poisoned, it will cause varying degrees of poisoning to various systems of the human body, especially affecting infants and children's intellectual development and brain functions such as learning and memory. Therefore, the treatment of lead in the environment is not only related to the healthy growth of children, but also affects the intelligence level of the next generation in China, the quality of the population and the long-term competitiveness of the country. [0003] Lead-containing wastewater mainly comes from battery production plants, electroplating plants and smelters. For t...
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IPC IPC(8): C02F1/62C02F9/14C02F1/66C02F1/28C02F3/34
Inventor 曾光明胡霜黄丹莲冯冲凌苏峰峰曾炜
Owner HUNAN UNIV