Myriophyllum spicatum-microorganism sewage purification system and construction method

A technology for sewage purification and construction methods, which is applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc. It can solve the limited removal capacity of organic matter and limit the application scope of foxtail algae water purification technology, etc. question

Pending Publication Date: 2020-10-13
BEIJING ACADEMY OF AGRICULTURE & FORESTRY SCIENCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] These patents use foxtail algae for livestock and poultry breeding wastewater, sewage plant tail water and the restoration of polluted river water, and have achieved good results in the removal of nutrients such as nitrogen and phosphorus, but have limited removal capacity for organic matter. Greatly limited the scope of application of water purification technology using foxtail algae

Method used

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  • Myriophyllum spicatum-microorganism sewage purification system and construction method
  • Myriophyllum spicatum-microorganism sewage purification system and construction method
  • Myriophyllum spicatum-microorganism sewage purification system and construction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A kind of foxtail algae-microbial sewage purification system, the purification system is based on the activated sludge of sewage treatment plant, builds plants on the basis of foxtail algae, and uses domestic sewage as the growth substrate, and the roots and stems of foxtail algae An attached microbial film is formed on the

[0017] The sludge is return sludge from a sewage treatment plant with a mixed liquor suspended solids concentration of 8000 mg / L. The domestic sewage is medium concentration domestic sewage.

[0018] The construction method of above-mentioned foxtail algae-microbial sewage purification system comprises the following steps:

[0019] (1) adopt foxtail algae as the basic construction plant, the mixed liquid suspended solids concentration is the sewage treatment plant return sludge of 8000mg / L as inoculation sludge, and foxtail algae and inoculation sludge are added in the construction container, described The raw material dosage ratio of foxtail alg...

Embodiment 2

[0023] A kind of foxtail algae-microbial sewage purification system, the purification system is based on the activated sludge of sewage treatment plant, builds plants on the basis of foxtail algae, and takes domestic sewage as the growth substrate, and the roots and stems of foxtail algae An attached microbial film is formed on the

[0024] The sludge is return sludge from a sewage treatment plant with a mixed liquor suspended solids concentration of 15,000 mg / L. The domestic sewage is medium concentration domestic sewage.

[0025] The construction method of above-mentioned foxtail algae-microbial sewage purification system comprises the following steps:

[0026] (1) adopt foxtail algae as the foundation to build plants, the mixed liquor suspended solids concentration is the sewage treatment plant return sludge of 15000mg / L as inoculation sludge, and foxtail algae and inoculation sludge are added in the construction container, described The raw material dosage ratio of foxta...

Embodiment 3

[0030] Select the foxtail algae plants with good growth and basically the same length of stems, leaves and roots, wash them, dry them, weigh them, and then place them in the construction reactor. The sewage treatment plant return sludge with a mixed liquid suspended solids concentration (MLSS) of 12000 mg / L was used as the inoculation sludge, washed three times with deionized water, skimmed off the supernatant, and added to the container. Raw material dosage ratio is 10g foxtail algae (dry weight): 2g activated sludge (calculated as MLSS).

[0031] A moderate concentration of domestic sewage was added to the reactor with an organic load of 150mg COD / g plant. Set the aeration pump in the reactor, the aeration intensity is 0.05m 3 / (h·L).

[0032] During the system construction process, the construction time was 25 days, the reactor water temperature was controlled at 20°C, and the light intensity was 5000Lx. After the reaction, the system construction is completed.

[0033]...

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Abstract

The invention belongs to the technical field of sewage purification, and particularly relates to a myriophyllum spicatum-microorganism sewage purification system and a construction method. To solve the problem of poor organic matter removal capacity of myriophyllum spicatum, the sewage purification system is constructed by using a floating-leaved plant, namely myriophyllum spicatum, and activatedsludge of a sewage treatment plant as raw materials; and the purpose of intensively removing pollutants in sewage is achieved by controlling system construction parameters, intensifying microorganismproliferation in the system and forming attached biological films on components such as roots and stems of the myriophyllum spicatum. Therefore, the myriophyllum spicatum and the biological films at the roots and the stems of the myriophyllum spicatum form the myriophyllum spicatum-microorganism purification system; and the absorption function of plants and the degradation function of microorganisms in the attached biological films are fully utilized, so the system can remove nutrient substances such as nitrogen and phosphorus in sewage and also can remove certain organic matters.

Description

technical field [0001] The invention belongs to the technical field of sewage purification, and in particular relates to a foxtail algae-microbial sewage purification system and a construction method. Background technique [0002] Foxtail algae is a perennial submerged herbaceous plant with cylindrical, well-developed and branched stems. The nodes take root and spread and grow in the bottom mud in the water. The leaves are lanceolate and bright green. At present, it is mainly used in water purification and water restoration projects. There are many open patents about the use of foxtail algae for water purification, for example: the publication number is CN107098475A, and the Chinese invention patent titled "Using foxtail algae to control coastal sewage channels" discloses a method for using green foxtail The method of algae treatment of the tail water of the sewage plant can form a nitrogen and phosphorus removal mode such as rhizosphere microbial purification and aquatic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/32C02F3/34C02F101/38C02F101/34
CPCC02F3/325C02F2101/38C02F2101/34
Inventor 郭旋李鹏钟华张成军赵同科邹国元杜连凤
Owner BEIJING ACADEMY OF AGRICULTURE & FORESTRY SCIENCES
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