Summary of the invention
Solar energy, which can be efficiently used, the purpose of the present invention is to provide one kind reduces rainwash pollutant concentration
Water treatment technology, mainly use sunlight catalytic and solar power generation electrocatalysis to improve polluted-water processing effect
Rate, this method are directed to current city sewage, rainwater runoff treatment low SI, the increasingly serious problem of pollution of area source, sheet
Invention proposes a kind for the treatment of process that can reduce landscape water pollution degree in situ, and technique construction is low with operating cost,
Operation and maintenance are easy, while can be effectively reduced pollutant concentration in urban rainwater, reduce pollution sources concentration, meanwhile, it utilizes
Riverbank or landscape water body circular treatment technology reduce the pollutant concentration in river or landscape water body, and then realize urban landscape
Water body purification.
To achieve the goals above, the present invention uses following technical measures:
1) floor tile is laid in sidewalk, square, riverbank laying area or open-air parking position;
2) after droping to floor tile photoelectrocatalysis reaction, subsequent rainwater conflux to collection system occur for rainwater;
3) water that collection system is collected is detected, when water quality reaching standard, landscape water body is directly discharged into, if water quality does not reach
Mark, then be passed through next step conventional water treatment process and handled, be discharged into landscape water body after up to standard, when water quality of landscape water is not up to standard
When, it is drained by return-flow system and is equipped with the region of photoresponse floor tile and is handled, be then recycled back in landscape water body, see
Fig. 1.
Further, the photoresponse floor tile, which is utilized in, is added additive when preparing water-permeable brick, the additive be iron,
Carbon, titanium dioxide, copper and aluminium, wherein its additive amount is the 2-5% of the water-permeable brick weight;Iron is 30- in the additive
40% (parts by weight), carbon are 30-40% (parts by weight), and titanium dioxide 10-15% (parts by weight), copper 5-10% (parts by weight) are remaining
Amount is aluminium.The titanium dioxide be containing Titanium slag, it is described containing Titanium slag be ilmenite concentrate, high titanium slag, climb steel slag, hold steel slag etc.;
Further, the additive is weighed according to dosage, and carbon, copper, aluminium are put into progress ball milling 30- in ball mill
Then 180min adds iron and continues ball milling 60-120min, takes out, obtain iron carbon mixture;Take titanium dioxide to be crushed,
Above-mentioned iron carbon mixture is added ball mill, carries out ball milling 30-60min by ball milling, and be sieved 500-200 mesh standard sieve, by sieved object
Mixture heated, 2h is heated at 800-1000 DEG C, it is final then with 200-250 DEG C/h uniform decrease in temperature to room temperature
To additive.
Concave surface is arranged in photoresponse floor tile upper surface, and rainwater is allowed to be resident the long period, and rainwater can be with after the sun shines again after the rain
Continue to generate photocatalysis, and Photoinduction device is arranged on concave surface, so that power supply system is triggered when rainwater is deeper, it is lasting to supply
Electricity carries out the degradation of pollutant.
Further, it is additionally provided with photovoltaic power generation apparatus, carries out power collection, is photoresponse floor tile in rainy days or night
Power supply, in this way can the continual removal for carrying out pollutant to water body using solar energy, under fine day state, after sunlight irradiation
Light-catalyzed reaction is generated, iron, carbon, copper, the aluminium in floor tile generate photoelectrocatalysis effect under the action of photoelectron, strongly degrade/
Remove the pollutant in polluted-water;And in order to prevent cloudy day or night photoelectrocatalysis event resolves, be arranged photovoltaic power generation apparatus
Electric energy is collected, is powered under night or cloudy state for floor tile, is realized electrocatalytic oxidation under low-voltage effect, go in water removal
Pollutant;
Electrode is set in the photoresponse floor tile, and the electrode is cathode and anode, and the cathode is one or more, institute
Anode is stated as one or more;
The photovoltaic power generation apparatus is arranged outside floor tile, by the power storage of conversion in power supply system, and by leading
Line supplies cathode and Anode power;The power supply system connects external power supply, and the external power supply is battery or municipal electricity consumption;
Further, Photoinduction device is set, when external sunlight meets photocatalysis condition, signal passes to controller,
Controller closes power supply system, and when external sunlight intensity is low, does not meet photocatalysis condition, signal passes to controller, control
Device opens power supply system,
Further, photovoltaic power generation apparatus is arranged in photoresponse tile surface partial region;Every piece of floor tile is one only
Erection system can solve space, improve utilization efficiency and construction efficiency.
Compared with prior art, the invention has the characteristics that:
1) photoresponse ground tile paving is used, in this way under sunlight irradiation, photocatalysis occurs for floor tile, so that in rainwater
Pollutant reduces, to reduce landscape water body pollution of waterhead degree;
2) addition contains Titanium slag, iron, carbon, copper and aluminium in common water-permeable brick in photoresponse floor tile;In iron, carbon, copper, aluminium
Under the action of, the small battery of uniform potential is formed, is formed between the particles such as iron-carbon, copper-carbon, iron/copper there is potential difference
Numerous subtle primary battery, meanwhile, titanium dioxide generates electron transition under sunlight irradiation, forms multi-level collaborative effect, bright
The aobvious contaminant degradation efficiency that improves generates photocatalytic effect in shallow-layer water distribution after rainwater landing;
3) setting photovoltaic power generation apparatus carries out power collection, in the irradiation of no sunlight, supplies electric power for photoresponse floor tile,
Electro-catalysis system is formed, realizes efficient degradation pollutant;And city surface source pollution can directly be located with in-situ treatment contaminated rain water
Reason solves its defect that sustainable utilization solar energy is unable in rainy days or night, provides a kind of new way for city water process
Diameter;
4) titanium-containing waste residues are taken full advantage of, it is creative that its catalytic action is used for rainwater treatment, so that a large amount of waste residues obtain
With waste utilization, the laying of photoresponse floor tile significantly improves Rainwater Quality, reduces the pollution risk in lake river;
5) iron in floor tile, carbon, copper, aluminium generate photoelectrocatalysis effect under the action of photoelectron, and strongly degrading/going decontaminates
The pollutant in water body is contaminated, while iron, aluminium form wadding body absorption heavy metal and hardly degraded organic substance, and pollutant is fixed.