Sewage treatment river sediment remediation method

A technology for river sediment and sewage treatment, which is applied in water/sludge/sewage treatment, sludge treatment, biological sludge treatment, etc.

Inactive Publication Date: 2015-03-18
蒋华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the commonly used method is dredging, that is, the method of intercepting and dredging bottom mud. Although this method can remove bottom mud pollutants, it requires a large amount of work, requires a lot of personnel, and is expensive. The dug out bottom mud will also form secondary Moreover, when this method is used for water quality control, the water body can only be kept clean for a certain period of time. With the entry of pollutants, new pollution will settle down and form sediment
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Method used

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Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0010] The following further provides examples to the implementation of the present invention:

[0011] Example: The sum of mud and water is 0.1m 3 , wherein the thickness of the bottom mud is about 0.15m, the mud-water mixture near the bottom mud is taken, and the supernatant is taken after sedimentation for measurement: CODcr is 38.3mg / l, ammonia nitrogen content (NH 3 -N) is 10.5mg / l, BOD 5 14.7ppm. The carrier substrate is made of 30-50 mesh coal powder and oat stalks with a width of less than 2mm, mixed in a mass ratio of 8:2, and after activation treatment, the amount added reaches a thickness of more than 1cm. After 1-2 hours Dosing an appropriate amount of bacterial liquid, the concentration of the bacterial liquid in the water is about 10 mg / l after being put in, after a week of oxygenation and aeration (aeration rate 1.3 liters of air / min), a large number of microorganisms have implanted, add 1 mg / l 1 polyacrylamide flocculant to shape the base material, the dosag...

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Abstract

The invention discloses a sewage treatment river sediment remediation method. A sewage treatment river sediment remediation material mainly comprises a base material prepared from substances such as coal powder and/or oat straws and/or cedarwood and/or basswood and the like, and a compound bacterial colony adhered to a base material carrier, wherein the compound bacterial colony mainly comprises saccharomycetes and/or photosynthetic bacteria and/or linear bacteria and/or aspergillus; a flocculating agent is a polyacrylamide solution; the concentration of polyacrylamide is controlled to be 1-2mg/l; the volume ratio of polyacrylamide to the carrier is (0.8 to 1)-(1 to 1).

Description

technical field [0001] The invention relates to a method for repairing sewage treatment river bottom mud, which belongs to the field of sewage treatment. Background technique [0002] In the water purification process of large water bodies such as rivers, lakes, and reservoirs, the treatment of polluted sediment is a relatively difficult problem. At present, the commonly used method is dredging, that is, the method of intercepting and dredging bottom mud. Although this method can remove bottom mud pollutants, it requires a large amount of work, requires a lot of personnel, and is expensive. The dug out bottom mud will also form secondary Moreover, when this method is used for water quality control, the water body can only be kept clean for a certain period of time. With the entry of pollutants, new pollution will settle down and form sediment. In the traditional sewage treatment process, sand and gravel are used as filter beds, and some large-particle organic suspended subs...

Claims

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Application Information

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IPC IPC(8): C02F11/02C02F11/14
CPCC02F11/02C02F11/14C02F2303/06C02F2305/06Y02A20/402Y02W10/20
Inventor 蒋华
Owner 蒋华
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