Method for removing copper-containing industrial wastewater by using mushroom culture medium waste

A technology for mushroom culture medium and industrial wastewater, which is applied in chemical instruments and methods, water pollutants, water/sewage treatment, etc., can solve the problems of complex ion exchange process, large power consumption and small treatment capacity of electrolysis. , to achieve the effect of low operating cost, convenient operation and large processing capacity

Inactive Publication Date: 2012-09-19
CHANGZHOU YAHUAN ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method overcomes the disadvantages of secondary pollution easily produced by the chemical precipitation method, large power consumption and small processing capacity of the electrolysis method, complex and cumbersome process flow of the ion exchange method, etc., and has the advantages of high adsorption efficiency, simple process flow, convenient operation, and extremely low cost. Features

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0036] The biosorbent preparation process is as follows:

[0037] It will account for the mass percentage of raw materials: dry wheat straw (dry straw) 40%, dried chicken manure 20%, rice bran 15%, gypsum 13%, o-bromophenylacetic acid 3%, lime 1%, 2-bromomalonaldehyde 8%, Stir well with water at a ratio of 1:2, put it into a polyethylene plastic bag, steam sterilize it with a small boiler at 100°C for 18 hours, and inoculate mushroom strains in a sterile inoculation box. Then move it indoors. After 5 months of temperature-controlled mushroom production, the culture medium can no longer produce mushrooms and fully decomposes, and the inside is covered with white mycelium. The used culture medium was sterilized at 90° C., and pulverized into particles smaller than 1 mm with a plant grinder. This product is mushroom culture medium waste biosorbent.

example 2

[0039] The biosorbent preparation process is as follows:

[0040] It will account for the mass percentage of raw materials: dry wheat straw (dry straw) 25%, dry chicken manure 25%, rice bran 20%, gypsum 11%, difluoroacetic acid 8%, lime 3%, 5-nitrosalicylaldehyde 8%, Stir well with water at a ratio of 1:1.5, put it into a polyethylene plastic bag, steam sterilize it with a small boiler at 100°C for 15 hours, and inoculate mushroom strains in a sterile inoculation box. Then move it indoors. After 8 months of temperature-controlled mushroom production, the culture medium can no longer produce mushrooms and has reached full maturity, and the inside is covered with white mycelium. The used culture medium was sterilized at 100° C., and pulverized into particles smaller than 1 mm with a plant grinder. This product is mushroom culture medium waste biosorbent.

example 3

[0042] The mushroom culture medium adsorbent that is made is pressed 1kg / m 3 The amount of adding Cu containing 2+ In the industrial waste water, the pH value of the waste water was adjusted to 4.9, and the compressed air pump was continuously fed with air at room temperature of 20°C for stirring. After 24 hours of contact time, filter with a high-efficiency pressure sand filter to separate water and adsorbent. The concentration of copper in the wastewater treated with the mushroom medium adsorbent decreased from 450mg / L to 0.25mg / L, and the removal rate reached 99.94%. After reaching the national discharge standard, it can be directly discharged or reused. The used mushroom culture medium waste can be directly landfilled.

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Abstract

The invention discloses a method for removing copper-containing industrial wastewater by using mushroom culture medium waste. The method comprises the following steps of: uniformly mixing dried wheat straw (dried rice straw), dried poultry litter, rice bran, gypsum, lime, organic aldehyde, organic acid and water to prepare a mushroom culture medium, performing indoor temperature-control mushroom production for 3 to 8 months until the mushroom culture medium is fully decomposed and mushroom cannot be produced, sterilizing the culture medium at high temperature, and crushing into particles to obtain a mushroom culture medium waste biosorbent; adding the biosorbent into the copper-containing industrial wastewater, wherein 1 to 2kg of the biosorbent is added into one cubic meter of the copper-containing industrial wastewater; adjusting pH value to be 4.0 to 7.0; stirring at the temperature of between 20 and 30 DEG C; and filtering and separating water and biosorbent after 24 to 48 hours, adjusting the pH value of water obtained after separation until the water is neutral and then discharging the water which meets the standard. The copper-containing industrial wastewater is removed by comprehensively using the mushroom culture medium waste, so that the aims of treating wastes with processes of wastes against one another and turning waste into wealth can be fulfilled.

Description

technical field [0001] The invention relates to a method for removing copper-containing industrial waste water by using mushroom culture medium waste, and belongs to the technical field of sewage treatment in environmental protection. Background technique [0002] Chemical industry, printing and dyeing, electroplating, non-ferrous smelting, non-ferrous metal mining, electronic material rinsing wastewater, dye production and other processes often produce wastewater containing a large amount of copper ions. According to the valence state of copper ions, there are trivalent copper ions and monovalent copper ions; according to the existing form, there are free copper (such as Cu 2+ ) and copper complexes (such as [Cu(NH 3 ) 4 2+ ], [Cu(CN) 3 ] 2- wait). As a beneficial element necessary for life, copper itself has very little toxicity, but after the human body inhales excessive copper, it will stimulate the digestive system, cause abdominal pain and vomiting, and long-term...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/28C02F1/62B01J20/24C02F101/20
Inventor 雷春生雷思宇龙海燕
Owner CHANGZHOU YAHUAN ENVIRONMENTAL PROTECTION TECH
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