CN200978232Y - Processing system for concentrated liquid of high-concentration waste water condensed by reverse osmosis - Google Patents

Abstract

A processing system of concentrated liquid of high concentration wastewater through the reverse osmosis process relates to the high pollution concentration wastewater treatment, which at least comprises a regulation pond for the primary physico-chemical treatment of waste leachate, a reaction tank, a sedimentation tank and a related pump equipment. The pre-treatment water produced is input to a membrane bioreactor. The middle -treatment water output from the membrane bioreactor is in filtration process through the membrane treatment system. The condensed water produced is output to a strengthened drying pool. After the drying treatment to the condensed water through the strengthening drying pool, a dried solid is produced. The membrane treatment system is a nanofiltration device or a reverse osmosis membrane device for the implementation of single-or multi-membrane processing. The membrane treatment system comprises a nanofiltration device and a reverse osmosis membrane device for the implementation of multi-level membrane processing. A backwater pipeline installation is disposed between the membrane treatment system and the regulation pool. The utility model will not cause the secondary pollution to the environment so that the effect of thorough effective water pollution treatment can be obtained.

Description

A kind of treatment system of concentrated solution of reverse osmosis of high concentration waste water

Technical field

The utility model relates to high pollution concentration wastewater treatment method, relates in particular to a kind of treatment system of concentrated solution of reverse osmosis of high concentration waste water.

Background technology

High density contaminated wastewaters such as percolate and papermaking, alcohol, dyestuff, agricultural chemicals, leather, viscose glue, monosodium glutamate, sugaring, breed load is high, (COD:Chemical OxygenDemand is up to thousands of extremely tens thousand of mg/l for its chemical oxygen demand (COD), biodegradability is poor, and often contain poisonous, objectionable impurities, admittedly contain the substrate concentration height, usually many employing burning disposal, dilution process or chemical process are handled, but because the limitation of aforesaid method, cause secondary pollution easily, and the working cost costliness, enterprise is difficult to bear.

Administer high-concentration waste water, general treatment facility is difficult to reach emission standard, and repeatedly administering can increase treatment cost again greatly, and the waste water of various industries has its unique pollutent again, and therefore administering these waste water does not have unified method.

The biochemical oxygen demand (BOD) BOD/ chemical oxygen demand COD of high density waste water such as percolate and C/N ratio are all very low, only depend on biological treatment can't reach processing requirements, generally take the combination process of pre-treatment+biological treatment+advanced treatment.

In advanced treatment process, membrane technology is applied in the middle of the processing of all kinds of high-concentration waste waters more and more widely, has especially captured a very big market in big cities such as Shenzhen.Because membrane technique has certain advantage, simultaneously, along with the continuous maturation of internal membrane material preparation technology, the price of film constantly descends, and makes membrane technique be applied to more and more in the processing of sanitary sewage and trade effluent.

For the condensed water of percolate in the membrane process generation, contain highly spissated pollution substance, method such as that present most of technologies are taked is directly buried, recharge, burning, the shortcoming of this technology is, environment is on every side caused secondary pollution, do not reach the effect of effective, thorough pollution treatment.

Summary of the invention

The purpose of this utility model is to provide a kind of treatment system of concentrated solution of reverse osmosis of high concentration waste water, and the processing to condensed water causes secondary environmental pollution in the prior art to remedy, can not be effectively, the thorough defective of pollution treatment.

The treatment system of the concentrated solution of the reverse osmosis of high concentration waste water that the utility model adopted, at least comprise percolate is carried out equalizing tank, reaction tank, settling tank and the associated pump equipment that elementary materialization is handled, the pre-treatment water of being produced inputs to membrane bioreactor, it is characterized in that: also comprise film processing system and strengthen dry pond;

Described membrane bioreactor comprises activated sludge process---Aerobic Pond and hollow fiber ultrafiltration membrane;

Described film processing system carries out the film processing to the middle water of membrane bioreactor output, produces condensed water, exports to and strengthens dry pond;

Drying treatment is carried out to condensed water in the dry pond of described reinforcement, produces air-dry solids.

Described film processing system is nanofiltration device or reverse osmosis membrane apparatus, carries out single stage membrane processing or multistage film and handles.

Described film processing system comprises nanofiltration device and reverse osmosis membrane apparatus, carries out multistage film and handles.

Settle the water return pipeline device between described film processing system and the equalizing tank.

The dry pond of described reinforcement comprises pond body, pond frame and fan, wherein,

Accept, deposit the condensed water of film processing system output in the body of described pond;

Described pond frame is installed on body top, pond;

Described fan is arranged on the frame of pond, and the condensed water blowing among the Xiang Chiti makes the condensed water drying, becomes air-dry solids.

The beneficial effects of the utility model are: in the utility model, film processing system carries out the film processing to the middle water of membrane bioreactor output, produce condensed water, export to and strengthen dry pond, strengthen dry pond condensed water is carried out drying treatment, produce air-dry solids, avoided used in the prior art buried, recharge, methods such as burning, the way of the utility model this " forced ventilation; quicken dry ", can promptly the condensed water mummification be become solids, in treating processes, can not cause secondary pollution, can reach effective environment, the effect of thorough pollution treatment, thus realize that percolate is handled efficiently.

In the utility model, film processing system carries out multistage film processing to the middle water of membrane bioreactor output, can reduce the generation of condensed water, improves the drying efficiency of strengthening dry pond, thereby further improves practicality of the present utility model.

Description of drawings

Fig. 1 is the utility model embodiment 1 system process structural representation;

Fig. 2 strengthens dry pond schematic top plan view in the utility model;

Fig. 3 strengthens dry pond along the A-A diagrammatic cross-section in the utility model;

Fig. 4 strengthens dry pond along the B-B diagrammatic cross-section in the utility model;

Fig. 5 is the utility model typical process flow synoptic diagram;

Fig. 6 is the utility model embodiment 1 concrete process flow diagram;

Fig. 7 is the utility model embodiment 2 system process structural representations;

Fig. 8 is the utility model embodiment 3 system process structural representations.

Embodiment

With embodiment the utility model is described in further detail with reference to the accompanying drawings below:

Embodiment 1:

According to Fig. 1, the utility model comprises the equalizing tank 11 that percolate is carried out elementary materialization processing at least, reaction tank 12, settling tank 13 and associated pump equipment, membrane bioreactor 2, film processing system 3 and the dry pond 4 of reinforcement, handle the pre-treatment water of being produced through elementary materialization and input to membrane bioreactor 2, membrane bioreactor 2 comprises activated sludge process---Aerobic Pond and hollow fiber ultrafiltration membrane, in the utility model, membrane bioreactor 2 integrates activated sludge process and membrane sepn, in the time of biological treatment, carry out membrane sepn, 2 pairs of pre-treatment water of membrane bioreactor carry out a biological disposal upon and membrane sepn after, membrane bioreactor 2 is water in film processing system 3 outputs, the middle water of 3 pairs of membrane bioreactors of film processing system, 2 outputs carries out the diafiltration art breading, produce condensed water, export to and strengthen dry pond 4, strengthen the 4 pairs of condensed water in dry pond and carry out drying treatment, produce air-dry solids, settle water return pipeline device 30 between film processing system 3 and the equalizing tank 11.

Particularly, as shown in Figure 1, Figure 2, Figure 3 and Figure 4, present embodiment comprises equalizing tank 11, lift pump 14, waste water tank 15, topping-up pump 16, reaction tank 12, settling tank 13 and the middle pond 17 of percolate being carried out elementary materialization processing successively, and membrane bioreactor 2, middle water tank 21, nanofiltration device 31 (in the present embodiment, film processing system 3 adopts nanofiltration device 31), dense water tank 33, high-pressure pump 34 and strengthen dry pond 4.

As shown in Figure 1, Figure 2, Figure 3 and Figure 4, strengthen dry pond 4 and comprise pond body 41, pond frame 42 and fan 43, accept, deposit the condensed water of film processing system 3 (nanofiltration device 31) output in the pond body 41.

As Fig. 2, Fig. 3 and shown in Figure 4, pond frame 42 comprises color steel 421 and angle iron bracket 422, angle iron bracket 422 directly links to each other with pond body 41, color steel 421 is tiled in the effect of playing the paulin that keeps off the rain on the angle iron bracket 422, and this pond frame 42 is installed on pond body 41 tops, and some desk fans 43 directly are installed on the angle iron bracket 422 of pond frame 42, fan 43 is evenly arranged, the condensed water blowing of fan 43 in pond body 41 makes the condensed water drying, becomes air-dry solids.

As shown in Figure 1, water return pipeline device 30 comprises water return pipeline 301 and magnetic valve 302, and magnetic valve 302 is arranged in the water return pipeline 301, and water return pipeline 301 is connected between equalizing tank 11 and the nanofiltration device 31.

As shown in Figure 5, typical process flow of the present utility model is as follows:

A, carry out elementary materialization by reaction tank 11 and 12 pairs of percolates of settling tank and handle, remove macrobead and heavy metal substance in the percolate, produce pre-treatment water.

B, the pre-treatment hydromining is carried out a biological disposal upon and membrane sepn water in the generation with membrane bioreactor 2.

C, carry out filtration process by film processing system 3 (nanofiltration device 31) centering water and handle, produce

The condensed water of giving birth to is delivered to strengthens dry pond 4.

D, the 4 pairs of condensed water in the dry pond of reinforcement are carried out drying treatment, produce solids.

As shown in Figure 6, the concrete technical process of present embodiment is as follows:

1, percolate is collected and is flowed in the equalizing tank 11, by lift pump 14 percolate is pumped into waste water tank 15.

2, percolate is pumped into reaction tank 12, simultaneously, throw in medicine, as alkali, flocculation agent and coagulant aids or the like, and stirring, air blast.

3, alkali, flocculation agent, coagulant aids and percolate carry out coagulating, produce macrobead flco and heavy metal precipitation thing.

4, in settling tank 13 after precipitate and separate, filtering macrobead and heavy metal substance produce pre-treatment water.Finish by above-mentioned steps 1-step 4 the elementary materialization of percolate is handled.

5, pre-treatment water in the settling tank 13 (being supernatant liquor) is exported to middle pond 17.For macrobead flco and heavy metal precipitation thing, settling tank 13 regular spoil disposals are to sludge digestion tank, with pressure filter to sludge dewatering.

6, by topping-up pump 18 the pre-treatment water in the middle pond 17 is pumped in the membrane bioreactor 2.

7, membrane bioreactor 2 comprises activated sludge process---Aerobic Pond and hollow fiber ultrafiltration membrane, membrane bioreactor 2 integrates activated sludge process and membrane sepn, in the time of biological treatment, carries out membrane sepn, to pre-treatment water carry out a biological disposal upon and membrane sepn after, in the generation water export in water tank 21.

8, by high-pressure pump 22 the middle water in the middle water tank 21 being pumped into nanofiltration device 31 handles with the filtration process that carries out the degree of depth, the middle water that 31 pairs of nanofiltration device pump into carries out single stage membrane to be handled, after finishing the membrane filtration processing, produce condensed water and clear water, adopt following manipulation:

81, the clear water output discharging to producing.

82, the condensed water that is produced pumps into by high-pressure pump 34 and strengthens dry pond 4, continues as follows

Step 9, simultaneously, wherein a part of condensed water is returned by water return pipeline device 30

Equalizing tank 11 in the step 1 carries out elementary materialization again and handles.

9, strengthen dry pond 4 and adopt the condensed water in 43 pairs of pond bodies 41 of fan to carry out the air seasoning processing, produce air-dry solids.

Embodiment 2:

As shown in Figure 7, the difference of present embodiment and embodiment 1 is: in the present embodiment, film processing system 3 adopts reverse osmosis membrane apparatus 32, and centering water carries out single stage membrane to be handled.

Principle, structure, method and embodiment 1 as for other parts are described same or similar, repeat no more herein.

In the utility model, can adopt a plurality of nanofiltration device 31 or a plurality of reverse osmosis membrane apparatus 32 centering water to carry out multistage film and handle, this can not need to pay creative work to those skilled in the art can implement, and repeats no more herein.

Embodiment 3:

As shown in Figure 8, the difference of present embodiment and embodiment 1 is: in the present embodiment, film processing system 3 adopts nanofiltration device 31 and reverse osmosis membrane apparatus 321,322 centering water to carry out multistage film and handles, this multistage film specifically comprises three grades of films processing, finishes three grades of films through nanofiltration device 31, dense water tank 33, high-pressure pump 34, first-stage reverse osmosis film device 321, dense water tank 35, high-pressure pump 36 and two-pass reverse osmosis film device 321 successively and handles.

Principle, structure, method and embodiment 1 as for other parts are described same or similar, repeat no more herein.

Equally, adopt nanofiltration device 31 and reverse osmosis membrane apparatus 32 can finish 2 grades, 3 grades films and handle, this can not need to pay creative work to those skilled in the art can implement, and repeats no more herein.

In above-mentioned all technical process, all can by to relevant devices, device the suitable control of parts realize the automatic operation of whole process flow, as for its concrete control method, can not need to pay creative work to those skilled in the art can implement, and repeats no more herein.

In sum, although basic structure of the present utility model, principle, method are specifically set forth by the foregoing description, under the prerequisite that does not break away from the utility model main idea, according to above-described inspiration, those of ordinary skills can not need to pay creative work can implement multiple conversion/alternative form or combination, repeats no more herein.

Claims (5)

1. the treatment system of the concentrated solution of a reverse osmosis of high concentration waste water, at least comprise percolate is carried out equalizing tank, reaction tank, settling tank and the associated pump equipment that elementary materialization is handled, the pre-treatment water of being produced inputs to membrane bioreactor, it is characterized in that: also comprise film processing system and strengthen dry pond;

Described membrane bioreactor comprises activated sludge process---Aerobic Pond and hollow fiber ultrafiltration membrane;

Described film processing system carries out the film processing to the middle water of membrane bioreactor output, produces condensed water, exports to and strengthens dry pond;

Drying treatment is carried out to condensed water in the dry pond of described reinforcement, produces air-dry solids.

2. the treatment system of the concentrated solution of reverse osmosis of high concentration waste water according to claim 1, it is characterized in that: described film processing system is nanofiltration device or reverse osmosis membrane apparatus, carries out that single stage membrane is handled or multistage film is handled.

3. the treatment system of the concentrated solution of reverse osmosis of high concentration waste water according to claim 1, it is characterized in that: described film processing system comprises nanofiltration device and reverse osmosis membrane apparatus, carries out multistage film and handles.

4. the treatment system of the concentrated solution of reverse osmosis of high concentration waste water according to claim 1 is characterized in that: settle the water return pipeline device between described film processing system and the equalizing tank.

5. according to the treatment system of the concentrated solution of any described reverse osmosis of high concentration waste water among the claim 1-4, it is characterized in that: the dry pond of described reinforcement comprises pond body, pond frame and fan, wherein,

Accept, deposit the condensed water of film processing system output in the body of described pond;

Described pond frame is installed on body top, pond;

Described fan is arranged on the frame of pond, and the condensed water blowing among the Xiang Chiti makes the condensed water drying, becomes air-dry solids.

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