A kind of biological-chemical processing unit for organic wastewater with difficult degradation thereby
Technical field
The utility model relates to concentrates in the device of organic wastewater with difficult degradation thereby in Environment control engineering and various water harnessings
Controlling device, specially promote Recalcitrant chemicals to be decomposed into small molecule contaminants using chemical energy, then pass through the micro- life of environment
Object acts on degradation of contaminant, finally realizes zero release of pollutant.
Background technique
Water pollution control technology is continued to develop since the industrial revolution, has been formed already using biochemical method as core, together
When combine new material development, also gradually develop membrane separation technique, the previous mature technology of the optimizations such as electrochemical techniques.Water is dirty at present
Dye administer in there are still the problem of be conventional biochemical treatment process and now more universal membrane bioreactor (MBR) work
Skill technology can not completely remove pollutant or right in experience high-concentration sewage such as landfill leachate, the objects such as particular industry waste water
The concentrate method generated in processing is few.
Organic wastewater and inorganic wastewater can be classified as according to pollutant component in high-concentration sewage, for most of inorganic
The processing of waste water, due to the natural quality of bioprocess, generally mostly with physico-chemical process flocculating setting or rich absorbent.But it is right
In the processing of high concentrated organic wastewater, then can be broken by electrochemical method, chemical oxidation method etc. organic matter long-chain or
Direct chemical digesting organic matter forms other small-molecule substances.More research institute's approval method has Fenton reagent, Fenton iron
Salt method, electrolysis method, ozone oxidation etc. serial of methods, high concentration, which is all extremely effectively treated, in these methods in theoretical degree has
Machine waste water, or even also there is very good effect to the processing of some high concentration inorganic wastewaters.
New method is merely using these methods in greatest problem present on practical application, and cost is difficult to control.Therefore
The utility model is directed to the improvement of high concentrated organic wastewater, proposes mature chemical method is square in conjunction with traditional biological method
Formula forms the device that more market receives.
Utility model content
For the processing for solving organic wastewater with difficult degradation thereby, the utility model proposes a kind of lifes for organic wastewater with difficult degradation thereby
Object-chemical processing device promotes Recalcitrant chemicals to be decomposed into small molecule contaminants, then passes through environmental microorganism using chemical energy
Degradation of contaminant is acted on, finally realizes zero release of pollutant.
The utility model is by taking the concentrate of landfill leachate or tail water processing as an example.The processing technology routine of the utility model
Be divided into two steps: first step is chemical treatment step, breaks the chemical bond of high concentration organic contaminant by chemical method
Protection, second step is biological treatment step, handles degradation of contaminant concentration by traditional biological, simultaneously because difficult decomposition is organic
Object is fully processed, and can be realized complete processing.
The process route chart of concentrate or tail water processing for landfill leachate is shown in Fig. 1, and waste water to be processed is main in Fig. 1
By retention section I and retention section II.Retaining section I is biological processing section, and retention section II is chemical treatment section.
Biological treatment section will be continually fed into air or purity oxygen, provide the oxygen molecule needed for biology aerobic decomposes;Chemistry
Processing section is continually fed into ozone, and ozone has extremely strong oxidation, can break organic-matter chemical key protection.
The purpose that chemical treatment section is placed in biological treatment section rear end is because ozone is equally made microorganism by sterilization
With, therefore it is placed in rear end and can be avoided micropopulation and coerced, while biological treatment section is placed in front end, carbon source in water,
Nitrogen source can ensure microorganism decomposition process.
It is arranged by reflux, it can be ensured that ozone natural decomposition is oxygen, forms oxygen saturation mixed flow and supplements biological section
Oxygen, carbon source, nitrogen source demand.Reflux ratio is controlled, is to realize the regulatable key factor of technique.
The utility model passes through " buried biological-chemical processing unit " (i.e. a kind of life for organic wastewater with difficult degradation thereby
Object-chemical processing device) show technique application method: Fig. 2 is " buried biological-chemical processing unit " longitudinal procedure figure.
A kind of biological-chemical processing unit for organic wastewater with difficult degradation thereby, including sand filter, positioned at sand filter rear end
Buried pit body;Four layers, respectively dispersion layer, biological respinse layer, chemically reactive layer and aquifer are arranged in buried pit body from top to bottom.
Biological respinse layer is charcoal or active carbon layer, the first gas-guide tube of interior laying in biological respinse layer, the first gas-guide tube
It is connected to air pump or oxygen generator, blowing air or oxygen in the first gas-guide tube.
Chemically reactive layer is charcoal or active carbon layer, and the second gas-guide tube is laid in chemically reactive layer, and the second gas-guide tube connects
Lead to ozone generator, leads to ozone in the second gas-guide tube.
Sand filter is multistage sand filter, fills sandy gravel stratum in sand filter, gravel particles 1-2mm, the height of sand filter by
Grade reduces.
Dispersion layer is stone layer (rubble gravel bed), and chad particle is 20-200mm cobble in dispersion layer.Aquifer is multilayer
Waterproof plastic plate.It is isolated between biological respinse layer and chemically reactive layer, between chemically reactive layer and aquifer with geotextiles.
The charcoal or active carbon layer of biological respinse layer are equipped with immobilized microorganism.Ozone intermittence is released in the chemically reactive layer
It puts.Outlet pipe connects chemically reactive layer bottom and sand filter.
Water first passes around multistage sand filter removal solid impurity, reduces solid impurity to ozone unnecessary consumption.By sand
After the filtering in filter tank, water is entered in buried pit body by pipeline, and four layers, respectively dispersion layer are arranged in pit body from top to bottom, raw
Object conversion zone, chemically reactive layer and aquifer.Dispersion layer is laid with common stones, it is therefore an objective to (1) make water distribution more equal
It is even, (2) between water and gas time of contact it is longer.Biological respinse layer and chemically reactive layer are laid with charcoal or active carbon,
Charcoal or active carbon have extremely strong adsorptivity, realize the retention of sewage, interior laying gas-guide tube in biological respinse layer, by common
Air pump or oxygen generator generate air or oxygen;It is laid with gas-guide tube in chemically reactive layer, ozone is generated by ozone generator.It stores
Water layer is water tether layer after processing, is the waterproof plastic plate of multilayer.Level is directly with the isolation of common geotextiles.
Gravel particles are 1-2mm gravel in the sand filter, can suitably increase sand grains rugosity according to infiltration rate, or reduce
Gravel series.Chad particle is 20-200mm cobble in the dispersion layer.It can be mixed into immobilization in advance in the biological respinse layer
Microbial material, to maintain biological reactions rates to stablize.Ozone is released to intermittent release in the chemically reactive layer.
Compared with the existing technology, the utility model has the advantage that
1, technique is grafted strong, and technique core is biological respinse, chemically reacts to break the chemical key protection of pollutant, because
This can be applied under a variety of situations, can be individually formed process flow, or as collateral branch's process supplement other process routes it
In.
2, implementation pattern is varied, and device described in the utility model is the buried process of simple type, material
It is easy to get, Project Realization is simple, does not have secondary pollution risk.
3, technique investment is cheap compared to more simple chemical treatment, and utility model device core is microbial process,
Reaction condition satisfies the requirements down, does not need additional energy investment.
Detailed description of the invention
Fig. 1 is the utility model process route chart;
Fig. 2 is with " buried biological-chemical processing unit " composition schematic diagram;
1. sand filter in figure, 2. water distributors, 3. dispersion layers, 4. biological respinse layers, 5. geotextiles, 6. aquifers, 7. air guides
Pipe, 8. air pumps, 9. ozone generators, 10. outlet pipes, 11 chemically reactive layer;
Fig. 3 is with " buried biological-chemical processing unit " air water trend graph;
Real segment is processing water trend, and phantom line segments are gas trend.
Specific embodiment
Utility model will be further explained below with reference to the attached drawings and specific embodiments.
The process route chart of concentrate or tail water processing for landfill leachate is shown in Fig. 1, and waste water to be processed is main in Fig. 1
By retention section I and retention section II.Retaining section I is biological processing section, and retention section II is chemical treatment section.
Biological treatment section will be continually fed into air or purity oxygen, provide the oxygen molecule needed for biology aerobic decomposes;Chemistry
Processing section is continually fed into ozone, and ozone has extremely strong oxidation, can break organic-matter chemical key protection.
Chemical treatment section be placed in biological treatment section purpose be because, ozone for microorganism equally by bactericidal effect,
Therefore it is placed in rear end and can be avoided micropopulation and coerced, while biological section is placed in front end, the carbon source, nitrogen source in water can
Ensure microorganism decomposition process.
It is arranged by reflux, it can be ensured that ozone natural decomposition is oxygen, forms oxygen saturation mixed flow and supplements biological section
Oxygen, carbon source, nitrogen source demand.Reflux ratio is controlled, is to realize the regulatable key factor of technique.
The utility model shows the application method of technique by " buried biological-chemical processing unit ": Fig. 2 is " buried
Formula biological-chemical processing unit " longitudinal procedure figure.Fig. 3 is with " buried biological-chemical processing unit " air water trend graph.
A kind of biological-chemical processing unit for organic wastewater with difficult degradation thereby, including sand filter 1, be located at sand filter rear end
Buried pit body;Four layers, respectively dispersion layer 3, biological respinse layer 4,11 and of chemically reactive layer are arranged in buried pit body from top to bottom
Aquifer 6.
Biological respinse layer is charcoal or active carbon layer, the first gas-guide tube of interior laying in biological respinse layer, the first gas-guide tube
It is connected to air pump 8 or oxygen generator, blowing air or oxygen in the first gas-guide tube.
Chemically reactive layer is charcoal or active carbon layer, and the second gas-guide tube is laid in chemically reactive layer, and the second gas-guide tube connects
Lead to ozone generator 9, leads to ozone in the second gas-guide tube.
Sand filter is multistage sand filter (being three-level sand filter in Fig. 2), fills sandy gravel stratum, gravel particles 1- in sand filter
The height of 2mm, sand filter reduce step by step.Dispersion layer is stone layer (rubble gravel bed), and chad particle is 20-200mm in dispersion layer
Cobble.Aquifer is the waterproof plastic plate of multilayer.Between biological respinse layer and chemically reactive layer, chemically reactive layer and aquifer
Between with geotextiles 5 be isolated.The charcoal or active carbon layer of biological respinse layer are equipped with immobilized microorganism.The chemical reaction
Ozone intermittence release in layer.Outlet pipe 10 connects chemically reactive layer bottom and sand filter (to form reflux, treated water
It is again introduced into sand filter).
Water first passes around multistage sand filter removal solid impurity, reduces solid impurity to ozone unnecessary consumption.By sand
After the filtering in filter tank, water is entered in buried pit body by pipeline (water distributor 2), and buried pit body is arranged four layers from top to bottom, point
It Wei not dispersion layer, biological respinse layer, chemically reactive layer and aquifer.Dispersion layer is laid with common stones, it is therefore an objective to (1) be made
Water distribution is more uniform, (2) between water and gas time of contact it is longer.Biological respinse layer and chemically reactive layer are with charcoal or active carbon
It is laid with, charcoal or active carbon have extremely strong adsorptivity, realize the retention of sewage, interior laying air guide in biological respinse layer
Pipe 7 generates air or oxygen by common air pump or oxygen generator;Gas-guide tube 7 is laid in chemically reactive layer, by ozone generator
Generate ozone.Aquifer is water tether layer after processing, is the waterproof plastic plate of multilayer.Between level with common geotextiles every
From.
Gravel particles are 1-2mm gravel in the sand filter, can suitably increase sand grains rugosity according to infiltration rate, or reduce
Gravel series.Chad particle is 20-200mm cobble in the dispersion layer.It can be mixed into immobilization in advance in the biological respinse layer
Microbial material, to maintain biological reactions rates to stablize.Ozone is released to intermittent release in the chemically reactive layer.
The above is only the preferred embodiment of the utility model, it should be pointed out that: for the common skill of the art
For art personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these improve and
Retouching also should be regarded as the protection scope of the utility model.