The wastewater treatment and renovation system that is used for the industrial park
Technical field
The utility model relates to sewage treatment area, particularly a kind of wastewater treatment and renovation system that is used for the industrial park.
Technical background
In the water reuse be meant that the tail water with sewage work is former water, through further reaching national reuse water standard after the processing, can the reusable within the specific limits non-miscellaneous water of drinking, its water quality is between Shang Shui and following water.
In water can be used for municipal miscellaneous water and comprise that park irrigation and lake, river water, urban afforestation water, pavement of road spray water etc., the industrial use emphasis be reuse to heat power plant and chemical plant etc. the inner miscellaneous water of cooling water and municipal sewage plant, as can be used for sludge dewatering flushing filter cloth, sprinkling irrigation greenery patches, flushing road surface and car washing water etc.
Increase along with population, the quickening of urbanization step, water pollution phenomenons such as rivers and lakes are serious day by day, utilizing again of municipal effluent is the effective way of saving and rational utilization of water resources, an importance that also is the control water environment pollution, promotes the sustainable development of the city, still the eucyclic important leverage measure of water resources more and more is subjected to the attention of the parties concerned.
Just began the widespread use technology of middle water recycle abroad in the past as far back as the sixties in 20th century.China just began to list in national scientific research to the research of municipal sewage treatment and utilization as far back as 1958.It is the advanced treatment of wastewater lab scale of purpose with the reuse that the mid-1970s has carried out municipal effluent.At the beginning of the eighties, the demonstration project of some Waste water utilizations has been built in some big cities in succession.
At present, use more middle water technology and mainly contain coagulation, precipitation, filtration, biological treatment and charcoal absorption etc.Treatment process needs to adopt according to the difference of raw water quality the combination H of a certain technology or some technology], common middle water treatment technological process have following these:
(1) for the assorted draining of high-quality, its processing technological flow generally has:
1. a sterilization one water outlet is filtered in the one little flocculation one of former water one hair collector one equalizing tank;
2. former water one hair collector one equalizing tank one coagulating sedimentation one sterilization one water outlet;
3. a micro-filtration one ultrafiltration one sterilization one water outlet is filtered in the one little flocculation one of former water one hair collector one equalizing tank.
(2) for assorted draining, its processing technological flow generally has:
1. the one little flocculation one of former water one sieving one equalizing tank is filtered a charcoal absorption one micro-filtration one and is filtered a sterilization one water outlet;
2. former water one sieving one equalizing tank, one biological catalytic oxidation or blodisc one precipitation one are filtered a sterilization one water outlet.
(3) for sanitary sewage, its processing technological flow generally has:
1. former water one sieving one equalizing tank one acidication one biological catalytic oxidation one precipitation one is filtered a sterilization one water outlet;
2. former water one sieving one equalizing tank one biological catalytic oxidation one precipitation one biological catalytic oxidation one filters a sterilization one water outlet;
3. a charcoal absorption one sterilization one water outlet is filtered in the one little flocculation one of former water one sieving one equalizing tank one biological catalytic oxidation one precipitation
And in these technological process kinds, the problem that the water reuse exists in finding gradually: at first, the grey water system operation is undesired, and water quality and quantity instability, the major cause that causes this phenomenon are that some Processes and apparatus does not pass a test, thereby miss fire; Simultaneously, not high to the operation and management level of system, go wrong and can not in time solve, this also causes water quality and quantity that bigger fluctuation usually takes place.
Secondly, middle water reuse is more economical unlike using city water in actual engineering, and by analyzing the phenomenon of finding that the ubiquity facility ability can not make full use of, running cost is too high, this mainly is because the design scale of middle drainage facility is not in full use.
Once more, middle water reuse water quality standard height.At present, the water quality standard that the water reuse is carried out in China is existing " miscellaneous domestic water quality standard ", the requirement of total coli group is identical with " drinking water sanitary standard " in this standard, the III class water quality standard strictness that is applicable to Swimming area than quality of reused water standard and China of developed country, thereby make that many existing mid-water engineerings are not up to standard, limited popularizing of mid-water engineering.
In sum, there are the following problems: one, water quality instability to be used for the wastewater treatment and renovation system of industrial park at present; Two, equipment performance instability; Three, popularization is not in place.
The utility model content
The utility model purpose is to overcome above-mentioned the deficiencies in the prior art, and a kind of in stable condition wastewater treatment and renovation system that is used for the industrial park is provided.
Further, promote mid-water engineering, save the energy.
For reaching above-mentioned purpose, the technical solution adopted in the utility model is: a kind of wastewater treatment and renovation system that is used for the industrial park comprises efficient sedimentation tank, D type filter tank, sterilization pool and reuse pool; Efficient sedimentation tank, D type filter tank, sterilization pool are connected successively with reuse pool.
Preferably, described efficient sedimentation tank is provided with coagulant dosage device, flocculant concentration device and tripping device.
Preferably, described tripping device is the hole pipe that is obliquely installed.
Preferably, described D type filter tank is provided with the dioxide peroxide throwing device.
Preferably, described sterilization pool is provided with the dioxide peroxide throwing device.
Preferably, be provided with mud reflux and mud discharging device at the bottom of the described efficient sedimentation tank pond.
The utility model has following beneficial effect with respect to prior art:
1, the design of efficient sedimentation tank of the present utility model, D type filter tank, sterilization pool and reuse pool is easy to reach process requirement of equipment, has guaranteed the stable of water quality;
2, the design in coagulation reaction tank of the present utility model and flocculation reaction deposition pond, equipment mechanism is simple relatively, is beneficial to control, handled easily;
3, the design in coagulation reaction tank of the present utility model and flocculation reaction deposition pond, cost is cheap relatively, saves the energy.
Description of drawings
Fig. 1 is used for the fundamental diagram of the wastewater treatment and renovation system of industrial park for the utility model.
Embodiment
Embodiment
As shown in Figure 1, a kind of wastewater treatment and renovation system that is used for the industrial park comprises that efficient sedimentation tank, D type filter tank, sterilization pool are connected with reuse pool successively with efficient sedimentation tank, D type filter tank, sterilization pool; Described efficient sedimentation tank is provided with coagulant dosage device, flocculant concentration device and tripping device; Described tripping device is the hole pipe that is obliquely installed; Described type filter tank is provided with the dioxide peroxide throwing device; Described sterilization pool is provided with the dioxide peroxide throwing device; Be provided with mud reflux and mud discharging device at the bottom of the described efficient sedimentation tank pond.
Principle of work of the present utility model is as follows: former water carries out flocculation sediment through water pump lifting to efficient settling tank to be handled.Efficient sedimentation tank is established coagulation reaction tank, flocculation tank, tube settler.By dosing coagulant in former water, accelerated reaction under the effect of stirrer forms tiny alumen ustum in coagulation reaction tank; Be provided with reaction tube in the flocculation tank, in reaction tube, add flocculation agent and increase flocculating effect, make the polymkeric substance coupling, form bigger flco by the backflow precipitating sludge; In the tube settler part, bigger flco relies on gravity to precipitate voluntarily, and less flco is trapped during by swash plate.The water outlet of efficient sedimentation tank is from flowing to D type filter tank, by filtrate to effects such as granule foreigns such as thing, larger molecular organics, virus, bacterium, colloid, iron in the water adsorb, hold back, fix, former water by D type filter tank after 95% granule foreign removed.Kill bacterium by adding dioxide peroxide, prevent algae grows on the filtrate, influence filter effect to D type filter tank water inlet portion.Combined water and air backwash is adopted in the back flushing in D type filter tank, and the second-stage treatment part is returned in the water outlet of back flushing.The water outlet in D type filter tank enters sterilization pool, after handling by disinfection by chlorine dioxide, can be back to the industrial park.Its water quality can reach circulating cooling water quality controlling index in " reuse of wastewater engineering design standard " (GB 50335-2002).The mud part that efficient sedimentation tank produces is back to efficient sedimentation tank flocculation reaction part, improves flocculating effect, and a part is delivered to the sewage plant sludge processing unit, with the together dehydration and drying processing of second-stage treatment part mud.
As mentioned above, just can realize the utility model preferably, the foregoing description is preferred embodiment of the present utility model only, is not to be used for limiting practical range of the present utility model; Be that all equalizations of being done according to the utility model content change and modification, all contained by the utility model claim scope required for protection.