A resource utilization method for polluted deposit

A technology for polluting sediment and recycling it, applied in chemical instruments and methods, water pollutants, sludge treatment, etc., to achieve the effects of simple process, short effect time and low cost

Inactive Publication Date: 2019-01-01
OCEANOGRAPHIC INSTR RES INST SHANDONG ACAD OF SCI
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Problems solved by technology

[0007] Therefore, existing physical remediation, chemical remediation and biological remediation all have certain technical defects, and it is ne

Method used

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  • A resource utilization method for polluted deposit
  • A resource utilization method for polluted deposit

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Example Embodiment

[0025] The technical solutions of the present invention will be further described in detail below in conjunction with specific embodiments.

[0026] 1. Use cement to build the anti-seepage pool, the anti-seepage pool is 2m×2m, and the pool height is 0.8m.

[0027] 2. Salvage the bottom mud and put it in the seepage tank. The bottom mud is 0.5m high, and dry the polluted bottom mud to 70% of the maximum content.

[0028] 3. Add heavy metals zinc and chromium, organic pollutants phenanthrene and pyrene to the bottom mud, and artificially shape the polluted bottom mud. The addition amount is zinc (ZnNO3) 200mg / kg, chromium (K2Cr2O7) 150mg / kg, phenanthrene 100mg / kg, pyrene 100mg / kg. Dissolve these pollutants in water first, then add them to the bottom mud, and finally stir the bottom mud to ensure that the pollutants are evenly distributed in the bottom mud.

[0029] 4. Add 100kg of decomposed straw to each seepage tank, and stir it to fully mix it with the bottom mud.

[0030]...

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Abstract

The invention belongs to the technical field of environment restoration and discloses a resource utilization method for polluted deposit. The method includes 1) building an anti-seepage tank; 2) fishing polluted deposit out, and adding the polluted deposit into the anti-seepage tank; 3) adding compost straw into the deposit with the weight percentage of the compost straw being 5-20%; 4) planting flower plants when the water content of the deposit decreases to a maximum water content of 60-80%; 5) performing water-fertilizer management; 6) monitoring contents of heavy metals and pollutants at regular times; and 7) applying the deposit for soil restoration after a monitoring result reaches a standard, and monitoring the deposit failed to reach the standard or planting flower plants again onthe deposit failed to reach the standard. The technical scheme overcomes deposit pollution and deposit sedimentation problems and is environmentally friendly. The flower plants are adopted as plants for restoration to turn the deposit into a resource and to create economic value. The method is low in cost, simple in step, short in effect production time, and good in restoration effect, builds an ecology landscape in an ecological process and is a positive and sustainable deposit disposal manner.

Description

technical field [0001] The invention belongs to the technical field of ecological environment restoration, and in particular relates to a method for recycling polluted bottom mud. Background technique [0002] Bottom mud is mainly animal and plant residues, containing a high amount of organic carbon and a large amount of nutrient elements, which can improve soil structure, improve soil fertility, improve water retention capacity and anti-erosion performance, and promote plant growth and development. It is a good soil improvement It can be used in desertification land control, landscaping, highway green belt, etc. Sediment recycling not only solves the problem of nutrient pollution, but also solves the problem of sediment deposition. It is an active and sustainable way of sediment disposal. However, the sediment often contains heavy metals and organic pollutants. Therefore, it is necessary to properly treat the contaminated sediment to make it harmless. [0003] At present,...

Claims

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Application Information

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IPC IPC(8): C02F3/32C02F3/34C02F11/00A01G22/60E03F5/10C02F101/20C02F101/30
CPCA01G22/60C02F3/32C02F3/34C02F11/00C02F2101/20C02F2101/30E03F5/103
Inventor 吕美蓉李雪莹范萍萍侯广利刘岩
Owner OCEANOGRAPHIC INSTR RES INST SHANDONG ACAD OF SCI
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