CN209226791U - A kind of high-concentration organic wastewater treatment system - Google Patents

Abstract

The utility model discloses a kind of high-concentration organic wastewater treatment systems, including evaporator section, biochemical treatment section, film process section and denitrogenation processing section, evaporator section includes flash distillation plant, evaporator and the second condenser, flash distillation plant includes sequentially connected former pond, flash vessel, first condenser and recover, flash vessel, evaporator and the second condenser are sequentially connected, biochemical treatment section includes sequentially connected sewage conditioning tank, the pond USAB, anoxic pond, aerobic tank and the pond MBR, film processing system includes sequentially connected filter, counter-osmosis device and filtering liquid pool, denitrogenation processing system includes sequentially connected denitrification processing device and discharge pond, second condenser is connect with sewage conditioning tank, the pond MBR is connected to the filter, filtering liquid pool is connected with denitrification processing device.A kind of high-concentration organic wastewater treatment system of the utility model recycles organic solvent and crystal salt by evaporator section, and resource recovery is high；It is discharged again after handling distillate, treatment effeciency is high and environmentally friendly.

Description

A kind of high-concentration organic wastewater treatment system

Technical field

The utility model relates to technical field of waste water processing more particularly to a kind of high-concentration organic wastewater treatment systems.

Background technique

Water resources and environment problem especially faces shortage of water resources problem increasingly by the attention of human society, dirty Water reuse (treatment recycling is where solving the key of water problems.So-called high concentration refers to the organic concentration COD higher of this kind of waste water, one As in 2000mg/L or more, it is tens of thousands of to ten tens of thousands of milligrams that some is even as high as every liter, and these high concentrated organic wastewaters compare It is difficult to degrade, that is, biodegradability is lower, high concentrated organic wastewater from coking wastewater, petrochemical industry/oils waste water, pharmaceuticals industry, The chemical industries such as dyeing, the detrimental extent being discharged into environment are significantly larger than general waste water, complicated components, the dirt in waste water It is high to contaminate object concentration, containing a large amount of difficult to degrade and poisonous and harmful substances, therefore it is handled even more important.Membrane bioreactor (Membrane Bioreactor, MBR) technology is to reduce the important leverage of contaminated wastewater rate, and membrane separation device is anti-with biology A kind of New Type of Sewage Treatment System that device is combined into is answered, traditional secondary settling tank is replaced with membrane module form, can be reached good Solid-liquid separation effect be conducive to be proliferated slow microorganism convenient for control sludge concentration so that system nitrification and difficult to degrade having Machine object degradation rate is improved.However as film industrial expansion, the decline of film manufacturing cost, therefore asking there is fouling membrane Topic, and the salinity in waste water can not recycle again, it is therefore desirable to the organic wastewater treating system of this kind of high concentration into Row improves, and is just able to achieve the efficient process to organic wastewater.

Summary of the invention

The utility model aims to solve the problem that above-mentioned mentioned technical problem, provides that a kind of resource utilization is high and treatment effeciency High high-concentration organic wastewater treatment system.

The utility model is realized through the following technical scheme: a kind of high-concentration organic wastewater treatment system, including Evaporator section, biochemical treatment section, film process section and denitrogenation processing section, evaporator section include flash distillation plant, evaporator and the second condenser, Flash distillation plant includes by the sequentially connected former pond of flash distillation pipeline, flash vessel, the first condenser and recover, flash vessel, steaming Hair device and the second condenser be sequentially connected, biochemical treatment section include by the sequentially connected sewage conditioning tank of the second infusion pipeline, The pond USAB, anoxic pond, aerobic tank and the pond MBR, film processing system include passing through the sequentially connected filter of film process pipeline, reverse osmosis Saturating device and filtering liquid pool, denitrogenation processing system include passing through the sequentially connected denitrification processing device of denitrogenation pipeline and discharge pond, the Two condensers are connect with sewage conditioning tank, and the pond MBR is connected to the filter, and filtering liquid pool is connected with denitrification processing device.

Further, the evaporator is connected with crystallization collector by recovery pipe and is connected by the first return line former Pond.

Further, the sewage conditioning tank connects cesspool by plumbing drain.

Further, the aerobic tank connect by the second return line with anoxic pond, the pond MBR pass through sludge reflux pipeline and The connection of the pond USAB.

Further, the counter-osmosis device includes reverse osmosis membrane core, the side of reverse osmosis membrane core by the first infusion pipeline with Liquid pool connection is filtered, the other side is connect by third return line with former pond.

Further, the denitrification processing device includes level-one denitrification reactor and second level denitrification reactor.

Further, the ion detection instrument for monitoring water quality is provided in the discharge pond.

Further, the discharge pond is connect by the 4th return line with filtering liquid pool, and the ion detection instrument monitors water Matter and the opening and closing for controlling valve on the 4th return line.

Further, buffer pool and booster pump are provided between the pond MBR and filter.

Further, the filter includes primary filter and secondary filter.

Beneficial effect is: compared with prior art, a kind of high-concentration organic wastewater treatment system of the utility model passes through Evaporator section evaporates waste water, obtains organic solvent and crystal salt, and resource recovery is high；And generation during recovery processing is evaporated Liquid is discharged again after carrying out biochemical treatment, film process and denitrogenation processing out, and treatment effeciency is high and environmentally friendly.

Detailed description of the invention

Specific embodiment of the present utility model is described in further detail below in conjunction with attached drawing, in which:

Fig. 1 is a kind of structural representation of a specific embodiment of high-concentration organic wastewater treatment system of the utility model Figure.

Specific embodiment

As shown in Figure 1, a kind of high-concentration organic wastewater treatment system, including evaporator section, biochemical treatment section, film process section and Denitrogenation processing section, evaporator section include flash distillation plant, evaporator 5 and the second condenser 23, and flash distillation plant includes by flash distillation pipeline Sequentially connected former pond 1, flash vessel 2, the first condenser 3 and recover 4, flash vessel 2, evaporator 5 and the second condenser 23 Be sequentially connected, biochemical treatment section include by the sequentially connected sewage conditioning tank 6 of the second infusion pipeline, the pond USAB 7, anoxic pond 8, Aerobic tank 9 and the pond MBR 10, film processing system include passing through the sequentially connected filter 11 of film process pipeline, 12 and of counter-osmosis device Liquid pool 13 is filtered, denitrogenation processing system includes by the sequentially connected denitrification processing device 14 of denitrogenation pipeline and discharging pond 15, the Two condensers 23 are connect with sewage conditioning tank 6, and the pond MBR 10 is connect with filter 11, filter liquid pool 13 and denitrification processing device 14 Connection.A kind of high-concentration organic wastewater treatment system of the utility model, evaporates waste water by evaporator section, obtains organic solvent And crystal salt, resource recovery are high；And biochemical treatment, film process and denitrogenation are carried out to the distillate generated during recovery processing It is discharged again after processing, treatment effeciency is high and environmentally friendly.Specifically, flash vessel 2 conveys the raw water to come to former pond 1 and dodges It steams, may include having pressure reducing valve and tank body, raw water rapid vaporization is made by pressure reducing valve, to make the partial organic substances vapour in raw water It dissolves and, and recycle the organic matter of this part vaporization by the first condenser 3, and then obtain organic solvent and recyclable； Solution after flash distillation is delivered in evaporator 5, and evaporator 5 can be MVR evaporator 5, and the moisture in solution is evaporated, and is improved molten The concentration of inorganic salts in liquid, so that the steam for obtaining inorganic salts crystal, and evaporating is delivered to the second condenser 23 and is condensed, Condensed distilled water can be connected to biochemical treatment system containing the ingredient of ammonia nitrogen ion, the second condenser 23 and carry out to distilled water Processing.Biochemical treatment system uses AAO technique, including the pond USAB 7, anoxic pond 8 and aerobic tank 9, the pond USAB 7 to pass through activated sludge Ammonification organic matter, anoxic pond 8 carry out denitrogenation by anaerobic organism, and aerobic tank 9 removes BOD, nitrification and absorption by aerobe The organic matter in water can be effectively treated in phosphorus, and this system is provided with the pond MBR 10 in the water outlet of aerobic tank 9, can will be active Sludge filtration is fallen, and the degree of purity of biochemical treatment system water outlet is improved.Further by film processing system and denitrogenation processing system The impurity and ammonia nitrogen ion in water are handled, the water for recently entering discharge pond 15 is made to meet the standard of discharge.Filter 11 is main For impurity screening, the reverse osmosis membrane core in counter-osmosis device 12 is avoided to block；Counter-osmosis device 12 can be set multiple reverse osmosis Film core, filtered solution are delivered to filtering liquid pool 13 and are buffered.

Preferably, the evaporator 5 is connected with crystallization collector 16 by recovery pipe and passes through the first return line 17 Connect former pond 1.Specifically, the solution after pervaporation, the crystal of precipitation can be transported to crystallization by recovery pipe and receive It is recycled in storage 16, and solution can be delivered to the processing recycled in former pond 1 by the first return line 17.Into One step, the solution of evaporator 5 can be directly transported the water inlet of meeting evaporator 5 by the first return line 17, to make solution It directly is evaporated processing, omits the process of flash distillation, improves treatment effeciency.

Preferably, the sewage conditioning tank 6 connects cesspool 18 by plumbing drain.Specifically, sewage conditioning tank 6 can be with Connection cesspool 18 simultaneously inputs other sewage, while being handled.

Preferably, the aerobic tank 9 is connect by the second return line 19 with anoxic pond 8, and the pond MBR 10 passes through sludge reflux Pipeline 20 is connect with the pond USAB 7.Specifically, the second return line 19 keeps the state being connected to sludge reflux pipeline 20, and leads to Inflow-rate of water turbine valve regulation reflux ratio, to make to form the circuit circulated in biochemical treatment system, the sludge that the pond MBR 10 is filtered can Think that the activated sludge of the supplement loss of the pond USAB 7, the second return line 19 can supplement nitrate anion for anoxic pond 8, improve biochemical The efficiency of processing system processing and the stability of continuous production.

Preferably, the counter-osmosis device 12 includes reverse osmosis membrane core, and the side of reverse osmosis membrane core passes through the first infusion pipeline It is connect with filtering liquid pool 13, the other side is connect by third return line 21 with former pond 1.Specifically, the solution distilled In still have ammonia nitrogen ion, after the filtering of reverse osmosis membrane core, filtered fluid pass through film core after be transported to filtering liquid pool 13, concentrate With regard to being transmitted back to the evaporation process that former pond 1 is recycled by third return line 21, the utilization rate of resource can be improved.

Preferably, the denitrification processing device 14 includes level-one denitrification reactor and second level denitrification reactor.Specifically, lead to The denitrification reactor of two-stage is crossed, the Nitrogen ion in water can be preferably adsorbed.Denitrification reactor can be in the prior art Denitrification reactor can adsorb anion and cation in water respectively, improve the efficiency of absorption.

Preferably, the ion detection instrument for monitoring water quality is provided in the discharge pond 15.Ion detection instrument is mainly examined The ammonia nitrogen ion in water is surveyed, the environmental pollution by water of discharge is avoided, the discharge for discharging pond 15 can be stopped when overproof water quality, make to arrange The function of discharge water can be stored on a crash basis by putting pond 15.

Preferably, the discharge pond 15 is connect by the 4th return line 22 with filtering liquid pool 13, the ion detection instrument It monitors water quality and controls the opening and closing of valve on the 4th return line 22.Specifically, when ion detection instrument detects overproof water quality, In addition to avoiding discharge pond 15 from continuing externally to discharge, the 4th return line 22 can also be opened and be transmitted back to the water discharged in pond 15 Circulation carries out denitrogenation in reservoir 13, until water quality reaching standard.

Preferably, buffer pool and booster pump are provided between the pond MBR 10 and filter 11.Specifically, in attached drawing not Draw buffer pool and booster pump.Buffer pool can stand condensed distilled water, can make the contamination precipitation of part, and pass through increasing Press pump is that counter-osmosis device 12 provides power.

Preferably, the filter 11 includes primary filter and secondary filter.Specifically, filter 11 can be with It is provided with the filter screen of two-stage, so as to preferably filter out the impurity in water.

Above embodiments are only to illustrate the technical solution of the utility model and are not intended to limit it, all without departing from this Any modification of utility model spirit and scope or equivalent replacement should all cover the range in technical solutions of the utility model It is interior.

Claims (10)

1. a kind of high-concentration organic wastewater treatment system, which is characterized in that including evaporator section, biochemical treatment section, film process section and Denitrogenation processing section, evaporator section include flash distillation plant, evaporator (5) and the second condenser (23), and flash distillation plant includes passing through flash distillation The sequentially connected former pond of pipeline (1), flash vessel (2), the first condenser (3) and recover (4), flash vessel (2), evaporator (5) it is sequentially connected with the second condenser (23), biochemical treatment section includes being adjusted by the sequentially connected sewage of the second infusion pipeline Pond (6), the pond USAB (7), anoxic pond (8), aerobic tank (9) and the pond MBR (10), film processing system include by film process pipeline according to The filter (11) of secondary connection, counter-osmosis device (12) and filtering liquid pool (13), denitrogenation processing system include by denitrogenation pipeline according to The denitrification processing device (14) and discharge pond (15), the second condenser (23) of secondary connection are connect with sewage conditioning tank (6), the pond MBR (10) it is connect with filter (11), filters liquid pool (13) and denitrification processing device (14) connection.

2. a kind of high-concentration organic wastewater treatment system according to claim 1, which is characterized in that the evaporator (5) Crystallization collector (16) is connected with by recovery pipe and by the first return line (17) connection former pond (1).

3. a kind of high-concentration organic wastewater treatment system according to claim 1, which is characterized in that the sewage conditioning tank (6) cesspool (18) are connected by plumbing drain.

4. a kind of high-concentration organic wastewater treatment system according to claim 1, which is characterized in that the aerobic tank (9) It is connect by the second return line (19) with anoxic pond (8), the pond MBR (10) pass through sludge reflux pipeline (20) and the pond USAB (7) Connection.

5. a kind of high-concentration organic wastewater treatment system according to claim 1, which is characterized in that the counter-osmosis device It (12) include reverse osmosis membrane core, the side of reverse osmosis membrane core is connect by the first infusion pipeline with filtering liquid pool (13), the other side It is connect by third return line (21) with former pond (1).

6. a kind of high-concentration organic wastewater treatment system according to claim 1, which is characterized in that the denitrogenation processing dress Setting (14) includes level-one denitrification reactor and second level denitrification reactor.

7. a kind of high-concentration organic wastewater treatment system according to claim 1, which is characterized in that the discharge pond (15) Inside it is provided with the ion detection instrument for monitoring water quality.

8. a kind of high-concentration organic wastewater treatment system according to claim 7, which is characterized in that the discharge pond (15) It is connect by the 4th return line (22) with filtering liquid pool (13), the ion detection instrument monitors water quality and controls the 4th return pipe The opening and closing of valve on road (22).

9. a kind of high-concentration organic wastewater treatment system according to claim 1, which is characterized in that the pond MBR (10) Buffer pool and booster pump are provided between filter (11).

10. a kind of high-concentration organic wastewater treatment system according to claim 1, which is characterized in that the filter It (11) include primary filter and secondary filter.