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Zeolite-acorus calamus artificial wet land sewage treatment system and treatment method

A sewage treatment system and artificial wetland technology, applied in the direction of biological water/sewage treatment, water/sludge/sewage treatment, sustainable biological treatment, etc., to achieve high ammonia nitrogen removal capacity, improve treatment efficiency, and simple operation

Active Publication Date: 2010-07-14
ZHEJIANG SHUANGLIANG SUNDA ENVIRONMENTAL PROTECTION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] At present, there is no literature related to the artificial screening of specific nitrifying bacteria for the deammonization of nitrogen and the biological regeneration of zeolite.

Method used

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  • Zeolite-acorus calamus artificial wet land sewage treatment system and treatment method
  • Zeolite-acorus calamus artificial wet land sewage treatment system and treatment method

Examples

Experimental program
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Effect test

Embodiment 1

[0030] The final concentration of the nitrobacteria culture medium consists of (w / v): 0.1% sodium nitrite; 0.1% sodium carbonate; 0.075% potassium hydrogen phosphate; 0.003% magnesium sulfate; 0.001% manganese sulfate; pH6.5, the solvent is water; The nitrobacteria culture medium was inoculated with Nitrobacter opacus Sack, and cultured at 24° C. for 5 days with shaking or aeration, to obtain the nitrobacter Nitrobacter opacus Sack thalline culture, and set aside;

[0031] The final concentration of the nitrous bacteria medium is composed of (w / v): 0.1% potassium hydrogen phosphate; 0.05% ammonium sulfate; 0.75% calcium chloride; 0.03% sodium chloride; 0.003% magnesium sulfate; .5, the solvent is water; the nitrosobacillus medium is inoculated with nitrosobacillus Nitrosomonas monocella Nelson, cultured for 5 days with shaking or aeration at 24°C, and the culture product is diluted 10 times with sterile water to obtain nitrosobacillus Nitrosomonas monocella Nelson cell culture ...

Embodiment 2

[0033] Constructed wetland systems (see figure 1 , figure 2 ) The inner composite filler has 75% zeolite with different particle sizes (the exchange capacity of zeolite ammonia nitrogen is 5-10kg / m 3 ) (clinoptilolite filler (Zhejiang Jinyun) with a particle size of 50mm, 20mm, and 5mm is mixed at a volume ratio of 1:1:1), 20% red soil and 5% humus, and the wetland area is 20m 2 , pit depth 1.5m, slope 5% (ie h / L = 5%). The water distribution pipe adopts 25mm PVC pipe, and the water collection pipe adopts 50mm PVC pipe. Throw in each 30kg thalline culture of embodiment 1 Nitrobacter opacus Sack and nitrosomonas monocella Nelson thalline culture in composite filling material; Artificial wetland surface plant calamus; In the way of water, the domestic sewage COD and ammonia nitrogen are 80mg / L and 40mg / L respectively, and the removal rates of COD and ammonia nitrogen in the treated effluent are 90% and 95% respectively.

Embodiment 3

[0035] Constructed wetland systems (see figure 1 , figure 2 ) The inner composite filler has 65% zeolite with different particle sizes (the exchange capacity of zeolite ammonia nitrogen is 5-10kg / m 3 ) (clinoptilolite filler (Zhejiang Jinyun) with a particle size of 50mm, 20mm, and 5mm mixed at a volume ratio of 1:1:1), composed of 20% red soil and 15% humus, with a wetland area of ​​10m 2 , the pit depth is 1.0m, and the slope is 3% (ie h / L=3%). The water distribution pipe adopts 25mm PVC pipe, and the water collection pipe adopts 50mm PVC pipe. Throw in each 20kg thalline culture of embodiment 1 Nitrobacter opacus Sack and nitrosomonas monocella Nelson thalline culture in composite filling material; Artificial wetland surface plant calamus; In the way of water, the domestic sewage COD and ammonia nitrogen are 50mg / L and 20mg / L respectively, and the removal rates of COD and ammonia nitrogen in the treated effluent are 95% and 95% respectively.

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Abstract

The invention provides a zeolite-calamus constructed wetland sewage disposal system as well as a method utilizing the constructed wetland system to treat domestic sewage. The zeolite-calamus constructed wetland sewage disposal system mainly comprises a tank body, a filler filled in the tank body, aquatic plants planted on the surface of the tank body as well as a water distribution pipe and a water collecting pipe distributed in the tank, the filler is mainly clinoptilolite, Nitrobacter opacus Sack and Nitrosomonas monocella Nelson are put into the filler, and the aquatic plants planted on the surface of the tank body are calami. The system and method adopt clinoptilolite which has good ammonia nitrogen removal effects to serve as the filler of the constructed wetland, in order to improvethe treatment efficiency of zeolite, special nitrifying bacteria under artificial culture are screened to regenerate the zeolite, and the constructed wetland system has advantages of high ammonia nitrogen removal capacity, low investment and running costs and simple operation.

Description

(1) Technical field [0001] The invention relates to a zeolite-calamus artificial wetland sewage treatment system and a method for treating domestic sewage by using the artificial wetland system. (2) Background technology [0002] There is currently no economical and efficient treatment method for the reuse of low-concentration domestic sewage. If the sewage continues to use the activated sludge method or other aerobic biological treatment process, the treatment efficiency is low because of the low organic matter load, and the secondary sedimentation tank is required, the treatment cost is high, and the ammonia nitrogen removal effect is poor. [0003] Constructed wetland (Constructed Wetland) is a new wastewater treatment technology developed in the past 20 years. Since the first construction of artificial wetlands in former West Germany, this technology has developed rapidly in some developed countries in the United States, Europe and Australia. More than ten years ago, do...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/32C02F3/34
CPCY02W10/10
Inventor 郑展望芦国营周联友周晓云
Owner ZHEJIANG SHUANGLIANG SUNDA ENVIRONMENTAL PROTECTION CO LTD
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