CN1141264C

CN1141264C - Integrated treating system and process for cleaning sewage

Info

Publication number: CN1141264C
Application number: CNB011383631A
Authority: CN
Inventors: 万端极; 王秀霞
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-12-28
Filing date: 2001-12-28
Publication date: 2004-03-10
Anticipated expiration: 2021-12-28
Also published as: CN1356275A

Abstract

The present invention relates to an integrated treating system for purifying waste water and a treating method thereof, which is suitable for treating municipal waste water and industrial waste water. The integrated treating system comprises an industrial waste water pre-treatment system, and a next procedure treatment device of the industrial waste water pre-treatment system comprises a fence settling tank, a photosynthetic bacteria tank, a biofilm reactor and an artificial wetland in sequence. Firstly, the isolation pretreatment and the pretreatment of expulsion of toxin are carried out on the industrial waste water; industry pretreated water and other kinds of municipal waste water enter the fence settling tank through a water discharge pipe to deslagged and settled; then the industry pretreated water and other kinds of municipal waste water are released to the photosynthetic bacteria tank, and photosynthetic bacteria are utilized to eliminate organic matters and inorganic matters in the waste water to make oxygen content in the water body increased. Then the water enters the biofilm reactor to remove all organic matters and most of inorganic matters in the water; finally, the water enters the artificial wetland to be purified. The treated water reaches the standard of the third-class water of surface water. Compared with the existing waste water treatment system, the present invention has favorable effect of soil removal and purification, stable treatment capacity of system, small occupation area of facility and lower operating cost. Moreover, the forestage self-circulation reuse of the industrial waste water can be formed.

Description

Sewage purification total system and method

Technical field

The present invention relates to a kind of sewage purification total system and treatment process thereof, be suitable for city domestic sewage improvement and industrial sewage and administer.

Background technology

Along with industrial expansion and Increase of population, the demand of water and the pollution of water increasingly sharpen, and city domestic sewage is administered and the industrial sewage governing problem also becomes more urgent.For a large amount of sewage disposals, at present, usually adopt the mode of sedimentation, barrier, mechanical aeration, anaerobic reaction, aerobic reaction and qualified discharge to handle, this treatment system and mode not only floor space are big, equipment and working cost height, breakdown rate height, and the effect of comprehensive treating process is stable inadequately, still have objectionable impurities in the water of qualified discharge, cause the accumulation of surface water is polluted, be difficult to realize the harmless emission of industrial sewage self-circulation reuse and city domestic sewage.

Summary of the invention

Problem to be solved by this invention is to provide a kind of floor space little at the deficiency of above-mentioned prior art existence, and running cost is low, and the sewage comprehensive treatment effect is good, Sewage treatment systems that purification rate is high and method.

The technical scheme of sewage purification total system of the present invention is: include the industrial sewage pretreatment system, the treatment unit of the next procedure of industrial sewage pretreatment system comprises successively: barrier settling tank 4, photosynthetic bacteria pond 5, biofilm reactor 6 and artificial swamp 7.

In the such scheme, the industrial sewage pretreatment system includes flocculation pretreater 1 and separates thickener 2 with mineral membrane; Also can constitute by other industrial decontamination toxin expelling device.

The technical scheme of sewage purification integrated conduct method of the present invention is: industrial sewage separates the toxin expelling pre-treatment earlier, the pretreated water of industry and other sanitary sewage of city are entered the sedimentation of removing slag of barrier settling tank through water shoot together, banishing the photosynthetic bacteria pond then utilizes photosynthetic bacteria to eliminate organic and inorganics in the sewage, the oxygen level of water body is increased, enter biofilm reactor again except that whole organism and most of inorganics in anhydrating, COD is reduced to below the 100mg/l, BOD reduces to below the 25mg/l, ammonia nitrogen is below the 1mg/l, enter artificial swamp at last and carry out purifying treatment, the water after the processing reaches surface water three class water quality standards.

The present invention compares with existing Sewage treatment systems has following advantage and positively effect: 1, adopt physics and biochemical mode that sewage is carried out hierarchical synthesis and handle, the decontamination purification effects is good, system handles stable performance, and the additional pollution that can not produce other; 2, the facility floor space is little, and working cost is lower; 3, separating substances that can part is useful when the industrial sewage pre-treatment reclaims, and the water of part also can carry out reuse, forms industrial sewage prime self-circulation reuse, helps to reduce industrial comprehensive cost; 4, purification rate height, the water of discharging can reach surface water three class standards, do not have accumulation and pollute.

Description of drawings

Fig. 1 is the structured flowchart of an embodiment of sewage purification total system of the present invention.

Fig. 2 is the structure iron of the industrial sewage pretreatment system of one embodiment of the invention.

Fig. 3 is the biofilm reactor structural representation of one embodiment of the invention.

Fig. 4 is the artificial swamp structural representation of one embodiment of the invention.

Embodiment

Further describe embodiments of the invention below in conjunction with accompanying drawing.

Embodiment of sewage purification total system of the present invention such as Fig. 1,2,3, shown in 4, include the industrial sewage pretreatment system, the industrial sewage pretreatment system separates thickener 2 by flocculation pretreater 1 and constitutes with mineral membrane, the pretreater that wherein flocculates is formed by flocculation sediment jar 10 and flocculation agent jar 8 and transferpump 9 configurations, flocculation sediment jar top joins with sewage and flocculation agent inlet, the lower end is provided with throw out outlet and valve, below one side is separated thickener 2 through valve and pump 11 and is connected with mineral membrane, mineral membrane separates thickener and is interconnected by concentration tank 12 and membrane separation apparatus 14 and force (forcing) pump 13 and form, membrane separation apparatus is provided with not to be isolated the mouth of a river and isolates the mouth of a river 17, not isolating the mouth of a river links to each other with concentration tank, isolating the mouth of a river and drainageway joins and enters the barrier settling tank, also can link to each other simultaneously with industrial reuse water pipe 3, dispose recoil jar 15 in membrane separation apparatus one side, the recoil jar joins with compressed gas source 16, membrane separation apparatus is made of mineral membrane, mineral membrane is a sill by pottery, with titanium, zirconium, the galactic longitude superfine grinding is to nano level, on body material, high temperature sintering film forming through 1700 ℃, this mineral membrane can be finished the millimeter level, micron order, nano level separation concentrates, has anti-strong acid, highly basic, the characteristic of anti-biological pollution, can bear the pressure about 1Mpa and can work in the environment of high dirt gesture and 800 ℃ to one 50 ℃, mineral membrane can be finished simultaneously and separate and spissated operation; The water of separating through membrane separation apparatus enters the city domestic sewage pipe network to barrier settling tank 4, remove large granular impurity and mud, the water out of barrier settling tank links to each other with photosynthetic bacteria treating pond 5, the photosynthetic bacteria treating pond need keep a certain amount of photosynthetic bacteria and the temperature more than 5 ℃, photosynthetic bacteria can the part inorganics in the water body and all organism as carbon source in its growth and breeding and nitrogenous source, carry out photosynthesis in the objectionable impurities in eliminating water body, absorb the CO in the water body ₂, exhalation O ₂, can be sewage increases oxygen concn, improves water quality; The water outlet of photosynthetic bacteria treating pond and biofilm reactor 6 join, biofilm reactor includes biological reactor 19 and mineral membrane separator 21 and recycle pump 22, be placed with pottery ball film biological group 18 in the biological reactor, pottery ball film biological group by diameter be the pottery outer surface of ball of 1 millimeter to make one deck aperture be that 1 micron membranes forms mineral membrane, make microorganism enter in the film or be attached to spheroid formation pottery ball film biological group; Isolate the mouth of a river 20 through biofilm reactor and enter artificial swamp 7, artificial swamp includes waterproof bottom layer 23, be covered with hypothallus 24 on the watertight layer, hypothallus is made of loose matrix and active mud, plant on the hypothallus and be implanted with waterplant 26, be full of water in the wetland, cultivating in the water has planktonic organism and microorganism 25, so that sewage is further purified, the water after artificial swamp is handled can efflux and become reusable water source.Wherein the waterplant in the artificial swamp is the draft class deep water of coring prosperity, very water, pleuston and xylophyta, can be nutritive substance with the inanimate matter in the water.

Sewage purification integrated conduct method embodiment of the present invention is: separate the toxin expelling pre-treatment and comprise that industrial sewage is carried out flocculation sediment to be handled, make the objectionable impurities in the sewage be become macrobead group and the aggressiveness sedimentation by flocculation treatment by flocculation, the supernatant liquor of the sewage that flocculation treatment is crossed adds concentration tank and constantly separates concentrated through membrane separation apparatus then, through the separating for several times circulation, not filtrable aggressiveness and trapped substance are concentrated, objectionable impurities is separated reuse or done other processing, and entering the barrier settling tank by municipal sewage pipe network, pretreated water removes slag and precipitation process, remove large granular impurity and mud, make COD reduce by 5%, BOD reduces by 5%, after SS reduces by 80%, enter the photosynthetic bacteria treating pond and carry out the photosynthesis processing, utilize the function of photosynthetic bacteria, remove COD70%, BOD20%, ammonia nitrogen more than 95% and water in CO ₂, increase the O in the water ₂After the density, sewage is entered biofilm reactor, by biological soil pick-up and organic membrane filter, increased the microbe density in the water, whole organism and most inorganics have been removed, make COD reduce to 100mg/l, BOD reduces to 25mg/l, below the ammonia nitrogen 1mg/l, the last sewage of biofilm reactor processing is again sent into artificial swamp, utilize microorganism and waterplant in the artificial swamp, sewage is further purified, make it reach the face of land three class water quality standards, promptly COD reduces to 15mg/l, BOD reduces to 4mg/l, discharging again after ammonia nitrogen etc. reach below the 0.1mg/l.

Claims

1, a kind of sewage purification total system, it is characterized in that including the industrial sewage pretreatment system, the treatment unit of the next procedure of industrial sewage pretreatment system comprises successively: barrier settling tank (4), photosynthetic bacteria pond (5), biofilm reactor (6) and artificial swamp (7).

2,, it is characterized in that the industrial sewage pretreatment system includes flocculation pretreater (1) and separates thickener (2) with mineral membrane by the described sewage purification total system of claim 1.

3, by the described sewage purification total system of claim 2, the pretreater that it is characterized in that flocculating is formed by flocculation sediment jar (10) and flocculation agent jar (8) and transferpump (9) configuration, flocculation sediment jar top joins with sewage and flocculation agent inlet, the lower end is provided with throw out outlet and valve, below one side is separated thickener (2) through valve and pump (11) and is connected with mineral membrane, mineral membrane separates thickener and is interconnected by concentration tank (12) and membrane separation apparatus (14) and force (forcing) pump (13) and form, and membrane separation apparatus is provided with not to be isolated the mouth of a river and isolate the mouth of a river (17).

4, by claim 1 or 2 described sewage purification total systems, it is characterized in that biofilm reactor includes biological reactor (19) and mineral membrane separator (21) and recycle pump (22), be placed with pottery ball film biological group (18) in the biological reactor, pottery ball film biological group by diameter be 1 millimeter pottery outer surface of ball to make one deck aperture be that 1 micron membranes forms mineral membrane, make microorganism enter in the film or be attached to spheroid formation pottery ball film biological group.

5, by claim 1 or 2 described sewage purification total systems, it is characterized in that artificial swamp includes waterproof bottom layer (23), be covered with hypothallus (24) on the waterproof bottom layer, plant on the hypothallus and be implanted with waterplant (26), be full of water in the wetland, cultivating in the water has planktonic organism and microorganism (25).

6, a kind of sewage purification integrated conduct method, it is characterized in that industrial sewage separates the toxin expelling pre-treatment earlier, the pretreated water of industry and other sanitary sewage of city are entered the sedimentation of removing slag of barrier settling tank through water shoot together, banishing the photosynthetic bacteria pond then utilizes photosynthetic bacteria to eliminate organic and inorganics in the sewage, the oxygen level of water body is increased, enter biofilm reactor again except that whole organism and most of inorganics in anhydrating, COD is reduced to below the 100mg/l, BOD reduces to below the 25mg/l, ammonia nitrogen is below the 1mg/l, enter artificial swamp at last and carry out purifying treatment, the water after the processing reaches surface water three class water quality standards.

7, by the described sewage purification integrated conduct method of claim 6, it is characterized in that separating the toxin expelling pre-treatment and comprise that industrial sewage is carried out flocculation sediment to be handled, make the objectionable impurities in the sewage be become macrobead group and the aggressiveness sedimentation by flocculation treatment by flocculation, the supernatant liquor of the sewage that flocculation treatment is crossed adds concentration tank and constantly separates concentrated through membrane separation apparatus then, through the separating for several times circulation, not filtrable aggressiveness and trapped substance are concentrated, objectionable impurities is separated reuse or done other processing.

8, by the described sewage purification integrated conduct method of claim 6, it is characterized in that separating the toxin expelling pre-treatment and comprise that industrial sewage is carried out flocculation sediment to be handled, make the objectionable impurities in the sewage be become macrobead group and the aggressiveness sedimentation by flocculation treatment by flocculation, the supernatant liquor of the sewage that flocculation treatment is crossed adds concentration tank and constantly separates concentrated through membrane separation apparatus then, through the separating for several times circulation, not filtrable aggressiveness and trapped substance are concentrated, objectionable impurities is separated reuse or done other processing, and entering the barrier settling tank by municipal sewage pipe network, pretreated water removes slag and precipitation process, remove large granular impurity and mud, make COD reduce by 5%, BOD reduces by 5%, after SS reduces by 80%, enter the photosynthetic bacteria treating pond and carry out the photosynthesis processing, utilize the function of photosynthetic bacteria, remove COD70%, BOD20%, ammonia nitrogen more than 95% and water in CO ₂, increase the O in the water ₂After the density, sewage is entered biofilm reactor, by biological soil pick-up and organic membrane filter, increased the microbe density in the water, whole organism and most inorganics have been removed, make COD reduce to 100mg/l, BOD reduce to 25mg/l, below the ammonia nitrogen 1mg/l, the last sewage of biofilm reactor processing is again sent into artificial swamp, utilize microorganism and waterplant in the artificial swamp, sewage is further purified, make it reach the face of land three class water quality standards, promptly COD reduce to 15mg/l, BOD reduce to 4mg/l, ammonia nitrogen reach 0.1mg/l following after discharging again.