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Pollution prevention and control method for industrial site

A prevention and control and industrial technology, applied in chemical instruments and methods, water/sewage treatment, water/sludge/sewage treatment, etc., can solve problems such as reducing environmental risks, achieve low price, strong technology universality, and preparation The effect of simple process

Inactive Publication Date: 2014-04-23
INST OF SOIL SCI CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007]Technical problem to be solved: the present invention aims at the lack of technical methods for site pollution prevention and control in our country, and proposes to use urban biomass mixed waste to prepare biochar, and utilize its ability to reduce pollutants The interception capacity is coupled with the degradation effect of zero-valent iron on pollutants, improving the carrying capacity of the surface soil to the pollution load, reducing environmental risks and realizing the purpose of protecting regional groundwater

Method used

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Experimental program
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Embodiment

[0030] A. Preparation of control materials

[0031] The dewatered sludge is taken from an urban sewage plant in Nanjing (see Table 1 for its physical and chemical properties), and its sewage treatment process is A 2 O, the sludge is dehydrated by a plate and frame filter press, and the sludge is air-dried in an oven at 60°C for 24 hours to a constant weight. After taking it out, it is ground and added 0.05 mol / L HCl pickling for about 10 min, washing with water until neutral and drying to obtain biomass powder 1; kitchen fruit and vegetable biomass waste was obtained from a farmer’s market in Nanjing, of which kitchen waste accounted for about 40%, fruit and vegetable waste accounted for about 60% (the physical and chemical properties are shown in Table 1), the waste was washed with water and air-dried in an oven at 60 °C for 24 h to constant weight, and then pulverized to obtain biomass powder 2. The biomass powder 1 and biomass powder 2 obtained above were mixed at a mass...

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Abstract

The invention discloses a pollution prevention and control method for an industrial site. The pollution prevention and control method comprises the following steps of: preparing a prevention and control material, implementing a prevention and control technology and replacing a prevention and control layer. The pollution prevention and control method disclosed by the invention has the beneficial effects that the source of used materials is wide, the price is low, the preparation process of the prevention and control material is simple and environmentally-friendly, and after the soil is added, no secondary pollution is caused; the technology is strong in universality, is applicable to the main types of industrial sites in China such as chemical engineering, steel, coking, printing and dyeing and pharmacy, the effects on metal cations and most organic pollutants are good, and simultaneously certain acid resistance is achieved; the technical method is simple in construction operation, has no high requirement on equipment, and can be continuously put into operation only by replacing surface soil and carrying out moderate treatment and disposal after being fully loaded, so that the following expensive repairing cost is greatly reduced and large-scale promotion is easy.

Description

[0001] technical field [0002] The invention belongs to the field of site risk management and pollution control, and in particular relates to a method for preventing and controlling industrial site pollution. [0003] Background technique [0004] High-speed, continuous and extensive industrial process is the direct cause of regional environmental pollution and ecological damage in our country. Wastewater leaching is the most direct and main way for industrial processes to cause pollutants to enter the underground environment. As a natural barrier to groundwater, soil often loses its ability to intercept pollutants due to overloaded industrial loads. Once pollutants enter the aquifer, they will spread from point to surface driven by water flow, which will cause regional groundwater environmental problems, which will greatly increase the cost and difficulty of subsequent treatment. [0005] With the adjustment of my country's urban layout and the upgrading of industrial st...

Claims

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Application Information

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IPC IPC(8): C02F1/00
Inventor 吴骏陈梦舫李春平罗飞晏井春宋昕
Owner INST OF SOIL SCI CHINESE ACAD OF SCI
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