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Treatment technology of spirulina waste water

A technology for wastewater treatment and spirulina, which is applied in the treatment of sewage or sludge, water, and saline wastewater. Harm the sustainable development of spirulina aquaculture and other issues, and achieve the effects of small bulk density, low humidity, compact and durable equipment

Active Publication Date: 2007-01-31
银发环保股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

TN, NO in wastewater 2 - 、HCO 3 - , Cl - 、Na + , the total salt content and other concentrations are high, and the discharge volume is large. The direct discharge of these waste water without any treatment will have a significant impact on the eutrophication and salinization of the water quality, not only endangering local fish farming, agricultural irrigation and climate regulation The function of spirulina has a serious impact on the local economic development. The wastewater produced in the production process of spirulina has threatened the water body safety of Chenghai Lake, one of the nine plateau lakes in Yunnan Province, and destroyed the ecological balance. , Biological resources cannot be used continuously and effectively, and will directly endanger the sustainable development of the spirulina farming industry
However, there are serious defects in the domestic treatment of wastewater generated during the production of spirulina: due to the limitations of traditional treatment technology concepts and treatment techniques, some technical departments and production departments one-sidedly believe that wastewater can be discharged up to standard after biochemical treatment, while In fact, spirulina and many other high-salt wastewaters are difficult to biochemically treat, and biochemical treatment alone cannot meet the relevant discharge requirements; some technologies cannot make spirulina and many other high-salt wastewaters meet Relevant emission requirements

Method used

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  • Treatment technology of spirulina waste water

Examples

Experimental program
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Effect test

Embodiment 1

[0026] The spirulina waste water enters the regulating pond after recovering the spirulina through the coarse filter at the entrance of the regulating pond. The stainless steel wire mesh used for the coarse straining mesh has a mesh diameter of 0.08mm and a mesh width of approximately 0.17mm. To the diatomite filter, remove most of the solid matter through the diatomite filter, enter the intermediate pool, pass the pump to the filter system, the filter system is bag filter, activated carbon filter, quartz sand filter and precision filter Either way, the waste water enters the ultraviolet sterilizer after the filtration system, kills the residual microorganisms and algae monospores, and then enters the electrodialysis device, the total salt content, Cl-, etc. are efficiently removed, and the light brine is reused or discharged For agricultural irrigation, the concentrated brine is further treated by reverse osmosis equipment, and the light brine is reused for the production of s...

Embodiment 2

[0028] The spirulina waste water enters the regulating pond after recovering the spirulina through the coarse filter at the entrance of the regulating pond. The stainless steel wire mesh used for the coarse straining mesh has a diameter of 0.2mm and an approximate pore width of 0.67mm. Soil filter; Most of the solid matter is removed through the diatomite filter, enters the intermediate pool, and passes through the pump to the filter system. The filter system consists of two types of bag filter, activated carbon filter, quartz sand filter and precision filter. Or any combination of several forms filter system; All the other are with embodiment 1.

Embodiment 3

[0030] As shown in accompanying drawing 1, present embodiment is processed waste water by two treatment lines simultaneously, and spirulina waste water enters regulating pool after reclaiming spirulina through coarse strainer at the entrance of regulating pond, and the stainless steel wire mesh specification of coarse strainer is net The diameter of the hole is 0.08mm, and the mesh width is approximately 0.13mm. The water quality and quantity are adjusted in the regulating pool, and the water is pumped to the diatomite filter, and most of the solid matter is removed by the diatomite filter, and then enters the middle pool, and is pumped to the filter system. The filtration system is composed of one or more arbitrary combinations of bag filters, activated carbon filters, quartz sand filters and precision filters, and the rest are the same as in Embodiment 1.

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Abstract

The present invention relates to a water, salt-contained waste water, sewage and sludge treatment method. In particular, it relates to a treatment method of high-salt waste water produced in spirulina prince production process. Said method includes the following steps: making the waste water be fed into the inlet of regulation tank, recovering spirulina princes by utilizing filtering screen, then making the waste water be fed into regulation tank, regulating water quality and water quantity, pumping said waste water into diatomite filter to remove solid matter, then making the waste water be fed into intermediate tank, pumping said waste water into filtering system to farther remove smaller solid and living beings, then making the filtered waste water be fed into the disinfection system to kill microorganism and algal single spore, and making the waste water be flowed into electrodialysis device so as to obtain weak brine and strong brine. The weak brine is flowed into weak brine system, the strong brine is flowed into strong brine tank, and is undergone the process of drying solidification, then its residuum is buried.

Description

technical field [0001] The invention relates to a treatment method for water, saline waste water, sewage or sludge, in particular to a treatment method for high-salt waste water produced in the production process of spirulina. Background technique [0002] In recent years, as a pure natural food, spirulina has a wide range of applications, especially as a health food, it has a unique effect on the treatment or auxiliary treatment of certain diseases, which has stimulated the rapid development of the domestic spirulina breeding industry. Due to the extensive use of NaHCO in the cultivation process of spirulina 3 、NaNo 3 , NH 4 HCO 3 , NaCl, K 2 SO 4 、KH 2 PO 4 , FeSO 4 , EDTA and other nutrient salts, so the spirulina wastewater has the characteristics of complex pollutant components, high concentration, large wastewater discharge and unstable discharge. The spirulina water mainly comes from algae harvesting wastewater, waste culture medium, pool flushing water and o...

Claims

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Application Information

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IPC IPC(8): C02F9/04C02F1/28C02F1/50C02F1/469
Inventor 杨敏贺彬许海平
Owner 银发环保股份有限公司
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